JP5321509B2 - Public power system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a public power supply system enabling safe power usage without causing any erroneous operation at a public place. <P>SOLUTION: Receptacles 11 for receiving power from a distribution line 13 are installed in advance in a predetermined public place, a communication terminal 32 for requesting power supply to a receptacle 11 is connected to a center server 31 via the Internet 33. Upon receiving a request of power supply to a receptacle 11, the center server 31 outputs a current supply command to a current control section 14 via a communication network (the Internet 24 or a telephone network 25). When the current supply command is given and information for conduction to the receptacle which is generated by using a remote operation preventing device installed in the proximity of the receptacle is given, the current control section 14 permits conduction of current to the receptacle 11. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a public power supply system in which an outlet for supplying electric power from a power transmission line, a distribution line, or an extension is installed in a predetermined public place in advance, and electric power can be used in the public place.

  In general, a consumer receives power from a power transmission company and a power transmission line and a distribution line in advance by a contract with a power supply company, and supplies power to the extension line of the consumer to supply electric power from an outlet. ing. The outlet will be installed indoors or on the site of the customer's building.

  Normally, the power supplied from the power supply company to the outlet is supplied from the extension via the distribution line, but may be supplied directly from the transmission line or the distribution line. The term “outlet to which power from the power supply is supplied” includes the case of an outlet supplied directly from a transmission line or a distribution line, or the case of an outlet supplied from an extension.

  Thus, a consumer uses the electrical equipment by inserting plugs of various electrical equipment into outlets to which power from the distribution line is supplied. As described above, power is normally used through an outlet in a consumer.

  On the other hand, when contract power is determined by a contract with a power supply company, a breaker having a current limit value corresponding to the contract power is installed in the consumer, and the maximum current that can be used in the consumer is the current limit determined by the breaker. Suppressed within the value.

  Here, a home server is installed in the consumer, a control signal is transmitted from the push-type telephone on the go to the home server, and the power supply state to the electrical equipment connected to the plurality of outlets of the table tap at home is confirmed. In some cases, the power supply state can be switched if necessary (see, for example, Patent Document 1).

JP 2002-44882 A

  However, although the thing of patent document 1 can confirm the energization state of several outlets from remote places, such as going out, and can control energization on / off, the outlet used is a consumer's own outlet. It is not possible to use electrical equipment on the go. If you want to use electrical equipment while you are away from home, you can only get power by borrowing the outlets of customers (others) near your destination.

  Therefore, if an outlet for supplying power from a distribution line or an extension line is installed in a predetermined public place in advance and the outlet can be used, the electric power can be used in a public place that is not in the consumer.

  Further, the maximum current that can be used in the consumer is determined by the current limit value determined by the breaker of the consumer, but it is necessary to provide a current limit value even in the case of an outlet installed in a predetermined public place. This is in order not to adversely affect other customers and the upper system of the distribution line to which the outlet is connected.

  Therefore, a current limit value is also set for the current supplied to the outlet. In that case, a breaker is installed there for the outlet installed in a predetermined public place, and the current determined by the breaker. If the limit value is used, the current limit value is fixed. When changing the current limit value, the breaker must be replaced. In the outlet installed in a given public place, the current limit value can be easily changed according to the usage situation so that it can flexibly cope with the case where the power consumption is higher than originally assumed. Is desired.

  Even if an outlet for supplying power from the distribution line is installed in a predetermined public place in advance, the outlet cannot be effectively used in the public place unless the installation location of the outlet is known to the user. Therefore, it is desirable to make the installation location of the outlet known to the user.

  In addition, since the user can use the outlet only at the place where the outlet is installed, it is not preferable that the outlet can be used by remote control. Therefore, it is desired that the outlet cannot be used by remote control.

  An object of the present invention is to provide a public power supply system that allows convenient and safe use of electric power in a public place and allows the outlet to be used only at the place where the outlet is installed.

The public power supply system according to the present invention includes an outlet installed in advance in a predetermined public place and supplied with power from a distribution line, and an electric current supplied to the outlet connected between the outlet and the distribution line. A current control unit that controls availability; a communication terminal that requests power supply to the outlet; and a remote operation prevention device that is installed in the vicinity of the outlet and generates information indicating whether the outlet can be energized by a user's actual operation; The communication terminal is connected via the Internet, and the current control unit is connected via a communication network. When a user requests power supply from the communication terminal to the outlet, the remote operation prevention device A center that determines whether or not there is reception of energized information and outputs a current supply command to the current control unit when there is received energized information A chromatography server, the remote operation preventing device has a display device for displaying a variable identification marker for identifying the outlet to be changed every time the outlet is used, the center server, the An actual operation of reading the variable identification mark displayed on the display device into the communication terminal and transmitting it to the center server is performed by the user, and energization is possible when the variable identification mark is received from the communication terminal. It is characterized by determining that information has been received .

According to the present invention, when there is a power supply request from the communication terminal to the outlet by the user, the center server generates the outlet generated by the actual operation of the user from the remote operation prevention device installed in the vicinity of the outlet. Since the current supply command is output to the current control unit when the information indicating that the power supply to the power supply can be received, the current supply command is always output after the operation at the installation location of the outlet. It is possible to prevent the outlet from being energized by remote operation.

Moreover, since the center server determines that the information indicating that the energization is possible is received when the variable identification mark displayed on the display device installed in the vicinity of the outlet is received from the communication terminal, the information indicating that the energization is possible is generated. In order to do this, operation at the location of the outlet must be performed. Therefore, it is possible to prevent the outlet from being energized by a remote operation away from the outlet.

The block diagram of Example 1 of the public power supply system which concerns on embodiment of this invention. The flowchart which shows operation | movement of the installation location information provision part of the center server in Example 1 of the public power supply system which concerns on embodiment of this invention. Explanatory drawing of operation of the electric power supply request | requirement by the communication terminal in the installation place of the electrical outlet in the Example 1 of the public power supply system which concerns on embodiment of this invention, or a DC outlet. The flowchart which shows operation | movement of Example 1 of the public power supply system which concerns on embodiment of this invention. The block diagram of Example 2 of the public power supply system which concerns on embodiment of this invention. Explanatory drawing of operation of the electric power supply request | requirement by the communication terminal in the installation place of the electrical outlet in the Example 2 of the public power supply system which concerns on embodiment of this invention, or a DC outlet. The flowchart which shows operation | movement of Example 2 of the public power supply system which concerns on embodiment of this invention. The block diagram of Example 3 of the public power supply system which concerns on embodiment of this invention. Explanatory drawing of operation of the electric power supply request | requirement by the communication terminal in the installation place of the electrical outlet in the Example 3 of the public power supply system which concerns on embodiment of this invention, or a DC outlet. The flowchart which shows operation | movement of Example 3 of the public power supply system which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of Example 1 of the public power supply system according to the embodiment of the present invention. An outlet 11 for supplying AC power in advance is installed in a predetermined public place. A DC outlet 12 is also installed as necessary. FIG. 1 shows a case where the DC outlet 12 is a USB terminal for connecting a terminal device of a mobile device such as a personal computer or a mobile phone. The predetermined public places are, for example, parks, public facilities, convenience stores, and the like, and are installed as a power supply corner or a power supply stand.

  Power is supplied to the outlet 11 and the DC outlet 12 from the distribution line 13 via the current control unit 14. The current control unit 14 controls whether or not the current supplied to the outlet 11 and the DC outlet 12 is energized. AC power is supplied to the outlet 11 from the distribution line 13 by the electric wire 15a, and AC power is supplied from the distribution line 13 to the DC outlet 12 by being converted to DC power by the AC / DC converter 19 by the electric wire 15b. .

  The electric wire 15a of the outlet 11 is provided with an electric leakage detector 16a for detecting electric leakage of the electric wire 15a, a current detector 17a for detecting electric current flowing through the electric wire 15a, and a voltage detector 41a for detecting the voltage of the electric wire 15a. A switch 18a for turning on and off the current Ia flowing through 15a is provided. Similarly, the electric wire 15b of the DC outlet 12 includes an electric leakage detector 16b for detecting electric leakage of the electric wire 15b, a current detector 17b for detecting electric current flowing through the electric wire 15b, a voltage detector 41b for detecting the voltage of the electric wire 15b, and electric wires. A switch 18b for turning on and off the current Ib flowing through 15b is provided, and further, an AC / DC converter 19 that converts AC power input through the switch 18b into DC and outputs it to the DC outlet 12, A detector 16c is provided. The leakage detector 16c detects a leakage in the DC circuit. Further, the switch 18 b may be provided between the DC outlet 12 and the AC / DC converter 19. The currents Ia and Ib detected by the current detectors 17a and 17b and the voltages Va and Vb detected by the voltage detectors 41a and 41b are input and stored in the measured value storage unit 20, respectively.

  Leakage detectors 16a and 16b are for detecting a leakage of a subordinate system of the distribution line 13, and from the electric wires 15a and 15b and the outlet 11 and the DC outlet 12 that are power supply circuits to the outlet 11 and the DC outlet 12. Detect leakage of the previous circuit. When the leakage is detected in the electric wire 15a of the outlet 11 or the electric wire 15b of the DC outlet 12, the controller 21 is notified of the occurrence of the electric leakage. When the controller 21 receives the notification of the occurrence of the leakage from the leakage detectors 16a and 16b, the controller 21 opens the switches 18a and 18b to stop the supply of power to the outlet 11 and the DC outlet 12, and the leakage detection history storage unit 22 stores information such as the date and time of occurrence of electric leakage as a history.

  The control unit 21 controls energization of current to the outlet 11 and the DC outlet 12. When energization is permitted, the switches 18a and 18b are closed, and when energization is not permitted, the switches 18a and 18b are opened. In the overcurrent set value storage unit 23, limit values of the currents Ia and Ib supplied to the outlet 11 and the DC outlet 12 are stored in advance as overcurrent set values.

  The control unit 21 inputs the currents Ia and Ib stored in the measured value storage unit 20, and the currents Ia and Ib supplied to the outlet 11 and the DC outlet 12 are stored in the overcurrent set value storage unit 23. Whether or not the set value is exceeded is monitored. When the overcurrent set value is exceeded, the switches 18a and 18b are opened to cut off the currents Ia and Ib from the distribution line 13, and the overcurrent detection history storage unit 24 Information such as the date and time of overcurrent detection and an overcurrent value is stored as a history.

  As a result, the currents Ia and Ib supplied to the outlet 11 and the DC outlet 12 are prevented from being overcurrent, and other consumers and upper systems of the distribution line to which the outlet is connected are prevented from being adversely affected. At the same time, power can be safely supplied to the outlet 11 and the DC outlet 12.

  Further, the current control unit 14 is provided with a use time limit value storage unit 25 for setting a use time limit value of the outlet 11 or the DC outlet 12. When the usage time of the outlet 11 or the DC outlet 12 reaches the usage time limit value set in the usage time limit value storage unit 25, the control unit 21 opens the switches 18a and 18b and stops the supply of current. .

  That is, the control unit 21 has a timer 26. When the use of the outlet 11 or the DC outlet 12 is started, the control unit 21 starts the timer 26 and counts the usage time of the outlet 11 or the DC outlet 12. Then, when the usage time counted by the timer 26 reaches the limit value, the control unit 21 opens the switches 18a and 18b and turns off the current supplied to the outlet 11 and the DC outlet 12. As a result, the outlet user can automatically turn off the electric device without stopping the use of the outlet 11 or the DC outlet 12, even if the electric device is accidentally left connected for a long time. improves.

  Further, the control unit 21 calculates the amount of power used at the outlet 11 and the DC outlet 12 based on the currents Ia and Ib and the voltages Va and Vb stored in the measurement storage unit 20 and stores them in the used power storage unit 42. At the same time, the usage time of the outlet 11 and the DC outlet 12 is calculated and stored in the usage time storage unit 43. The usage time is obtained by calculating the time during which the switches 18a and 18b are closed.

  The current control unit 14 includes a communication port 27 and a converter 28, and the communication port 27 and the converter 28 are connected to the outlet 11 and the DC outlet 12 transmitted from the center server 31 via the Internet 29 and the telephone network 30. A power supply request is received and output to the control unit 21, and the usage status of the outlet 11 and the DC outlet 12, the amount of power used and the usage time of the user are transmitted via the Internet 29 and the telephone network 30 to the center server 31. Send to. The usage status of the outlet 11 and the DC outlet 12 is the number of outlets 11 and DC outlets 12 currently used by the user.

  The communication network connecting the current control unit 14 and the center server 31 is the Internet 29 or a telephone network 30 which is a communication network of a protocol other than the Internet protocol. The Internet 29 is transmitted by the Internet protocol, and the telephone network 30 is transmitted by a protocol other than the Internet protocol. For example, it is a mobile phone or PHS communication network, such as SMS. In the case of transmission via the telephone network 30, the converter 28 converts the protocol into an Internet protocol and outputs it to the communication port 27. Switching between the Internet 29 and the telephone network 30 is switched to an appropriate one depending on the size of communication data between the current control unit 14 and the center server 31.

  The center server 31 is connected to the communication terminal 32 via the Internet 33. The communication terminal 32 is, for example, a mobile phone 34 or a personal computer 35. When the outlet 11 or the DC outlet 12 is used, the outlet 11 or the DC outlet 12 is installed from the communication terminal 32 to the center server 31 via the Internet 33. A search request for a location, a power supply request, and an inquiry request such as the amount of power used, time used, and usage charge are made.

  Further, a remote operation prevention device 53 is installed in the vicinity of the outlet 11 and the DC outlet 12. The remote operation prevention device 53 performs an operation for permitting the energization of the currents Ia and Ib to the outlet 11 and the DC outlet 12. The remote operation prevention device 53 is used to install the outlet 11 and the DC outlet 12. The currents Ia and Ib cannot be supplied to the outlet 11 and the DC outlet 12 unless an operation allowing energization is performed at the place. In other words, the remote operation preventing device 53 generates information indicating that the outlet can be energized by the actual operation of the user.

  The remote operation preventing device 53 has a display device 54 for displaying a variable identification mark for identifying the outlet 11 or the DC outlet 12, and the outlet 11 or the DC outlet 12 is used as the variable identification mark. The display is updated by the control unit 21 each time. The variable identification mark displayed on the display device 54 is read by the communication terminal 32 and transmitted to the center server 31 via the Internet 33.

  The center server 31 has installation location information 44 indicating the locations where the outlets 11 and DC outlets 12 are installed, detailed usage information 45 indicating the usage status of the outlets 11 and DC outlets 12 at each installation location, and is used for each user. Electricity usage information 46 summed up electric energy, usage time information 47 summed up usage time for each user, installation location fee information 63 predetermined for each installation location of the outlet 11 and DC outlet 12, and for each user The usage fee information 48 obtained by collecting the usage fees is stored as information. The center server 31 multiplies the charge for each installation location stored in the charge information for each installation location 63 by the usage time or power consumption of the user, and stores the usage fee for each user as the usage fee information 48.

  The center server 31 also has a search request for an installation location of the identification mark update unit 55 for updating the variable identification mark displayed on the display device 54 of the remote operation prevention device 53 and the outlet 11 or the DC outlet 12. An installation location information providing unit 49 that sometimes provides the communication terminal 32 with installation location information 44 and usage detail information 45, and an outlet identification for determining an identification mark of the outlet 11 or the DC outlet 12 installed in a predetermined public place. Unit 36, current supply command output unit 37 that outputs a current supply command to current control unit 14 when a user requests power supply to outlet 11 or DC outlet 12, and overcurrent setting of current control unit 14 An overcurrent set value setting unit 38 for setting an overcurrent set value in the value storage unit 23, and the outlet 11 and the DC outlet 12 from the user When there is an inquiry request for user information (power consumption, usage time, usage fee), a user information providing unit 50 that provides the communication terminal 32 with power usage information 46, usage time information 47, and usage fee information 48. And have.

  When the identification mark update unit 55 of the center server 31 is read by the communication terminal 32 and transmitted through the Internet 33, the identification mark is updated and a new identification mark is updated by the current control unit 14 each time. It transmits to the control part 21. As a result, the control unit 21 of the current control unit 14 displays the updated identification mark on the display device 54 of the remote operation preventing device 53. As a result, a variable identification mark is displayed on the display device 54 of the remote operation preventing device 53.

  The installation location information providing unit 49 of the center server 31 receives the installation location information 44 of the outlet 11 or the DC outlet 12 or the installation when the user requests the installation location of the outlet 11 or the DC outlet 12 from the communication terminal 32. The detailed usage information 45 of the outlet 11 and the DC outlet 12 for each place is transmitted to the communication terminal 32. For example, the installation location information 44 provides the installation location closest to the position of the communication terminal 32, and the usage detail information 45 provides the availability information of the outlet 11 and the DC outlet 12.

  The outlet identifying unit 36 of the center server 31 inputs the variable identification mark displayed on the display device 54 of the remote operation preventing device 53 transmitted from the communication terminal 32, and the latest identification transmitted by the identification mark updating unit 55. It is determined whether or not it is a sign, and if it is the latest identification sign, it is determined that there is information that can be energized, and the outlet 11 and the DC outlet 12 to be supplied with current are identified based on the identification sign.

Then, the current supply command output unit 37 determines whether it is a power supply request from the communication terminal 32 to the outlet 11 or the DC outlet 12 by the user, and when the user authentication is confirmed, the outlet identification unit A current supply command is output via the Internet 29 or the telephone network 30 to the current control unit 14 corresponding to the outlet 11 or the DC outlet 12 identified at 36.

  The overcurrent set value setting unit 38 of the center server 31 is connected to the Internet 29 or the telephone when the outlet 11 or the DC outlet 12 installed in a predetermined public place is newly installed or when the capacity is changed midway. The overcurrent set value is transmitted to the overcurrent set value storage unit 23 of the current control unit 14 via the network 30, and the overcurrent set value is set and changed. Thereby, even if it does not go to the installation place of the outlet 11 or the DC outlet 12, the overcurrent set value can be easily changed.

  Further, the user information providing unit 50 of the center server 31 receives the user's power usage information 46, the usage information when the user makes an inquiry about the user information (power usage, usage time, usage fee). Since the time information 47 and the usage fee information 48 are provided to the communication terminal 32, the user can easily grasp the information on his own electric energy consumption, usage time, and usage fee.

  FIG. 2 is a flowchart showing the operation of the installation location information providing unit 49 of the center server 31. The installation location information providing unit 49 is activated when a request for searching for the installation location of the outlet 11 or the DC outlet 12 is received from the communication terminal 32. First, the location search screen is activated (S 1) and transmitted to the communication terminal 32 via the Internet 33. The installation location information providing unit 49 waits for selection of a location condition from a person who intends to use the outlet, and when the prospective outlet user selects a location condition (S2), the installation location list of the public power supply system is communicated via the Internet 33. The data is transmitted to the terminal 32 and displayed on the communication terminal 32 (S3).

  The installation location information providing unit 49 waits for selection of a location from the prospective outlet user, and when the prospective outlet usage selects the location (S4), detailed usage information of the outlet 11 and DC outlet 12 at the installation location is displayed. The data is transmitted to the communication terminal 32 via the Internet 33 and displayed on the communication terminal 32 (S5). As the detailed usage information, the position of the installation location, the usage status including the vacant information, the usable current, and the like are displayed. Thereby, the person who intends to use the outlet can easily determine which installation outlet is effective for using.

  In this way, when the public power system is searched by the installation location information providing unit 49 of the center server 31, the person who intends to use the outlet goes to the installation location where the outlet 11 or the DC outlet 12 is actually installed, and the outlet 11 or The DC outlet 12 is used.

  FIG. 3 is an explanatory diagram of an operation of requesting power supply by the communication terminal 32 at the installation location of the outlet 11 and the DC outlet 12 in the first embodiment. At the place where the outlet 11 or the DC outlet 12 is installed, a remote operation preventing device 53 is provided in the vicinity of the outlet 11 or the DC outlet 12. The remote operation preventing device 53 is provided with a display device 54 for displaying a variable identification mark for identifying the outlet 11 or the DC outlet 12, and the display device 54 identifies the outlet 11 or the DC outlet 12. A variable identification mark 56 is displayed. FIG. 3 shows a case where the variable identification mark 56 is a QR code. As described above, the variable identification mark 56 is updated by the identification mark update unit 55 of the center server 31 and updated and displayed by the control unit 21 every time the outlet 11 or the DC outlet 12 is used.

  When the user wants to use the outlet 11 or the DC outlet 12 at the installation location, the user reads the variable identification mark 56 by the communication terminal 32 and transmits it to the center server 31. The center server 31 inputs a variable identification mark 56 to the outlet identifying unit 36. The outlet identifying unit 36 identifies the outlet 11 and the DC outlet 12 to be supplied with current based on the variable identification mark 56 and determines whether or not it is the latest identification mark transmitted by the identification mark updating unit 55. If it is an identification mark, it is determined that there is information on energization.

  Further, the current supply command output unit 37 of the center server 31 confirms whether or not there is authentication by the user in the power supply request from the communication terminal 32, and when the confirmation is made, the outlet identified by the outlet identifying unit 36 is confirmed. 11 and a current supply command to the current control unit 14 corresponding to the DC outlet 12. As a result, power is supplied to the outlet 11 and the DC outlet 12.

  FIG. 4 is a flowchart showing the operation of Example 1 of the public power supply system according to the embodiment of the present invention. First, the user goes to the installation location of the outlet 11 or the DC outlet 12 that he / she wants to use, and reads the variable identification mark 56 displayed on the display device of the remote control preventing device 53 at the installation location by the communication terminal 32 (S1). . The center server 31 determines whether there is information that can be energized based on the variable identification mark 56 transmitted from the communication terminal 32 (S2). This is determined based on whether or not the variable identification mark 56 is the latest identification mark. When the variable identification mark 56 is the latest identification mark, it is determined that there is information indicating that energization is possible (S2). Then, the center server 31 updates the identification mark (S3) and transmits a new identification mark to the control unit 21 of the current control unit 14. As a result, the control unit 21 of the current control unit 14 displays the updated identification mark on the display device 54 of the remote operation preventing device 53.

  When the user inputs the login password (S4), the center server 31 identifies the installation location of the outlet 11 and the DC outlet 12 to be supplied with current based on the variable identification mark 56 (S5). It is confirmed whether there is authentication based on the login password (S6). If authentication cannot be confirmed, the process ends.

  On the other hand, when the authentication is confirmed, the center server 31 displays a use confirmation screen on the communication terminal 32 (S7), and confirms whether or not the user intends to use the outlet 11 or the DC outlet 12. Perform (S8). If there is no usage confirmation from the user, the process ends. If there is a usage confirmation, the center server 31 displays a usage agreement screen on the communication terminal 32 (S9), and the user agrees to the agreement. Whether or not (S10).

  When the user agrees to the rules, the center server 31 outputs a current supply command to the current control unit 14 (S11). This is because it is already determined in step S2 that there is information indicating that power can be supplied. When receiving the current supply command, the current control unit 14 starts energization (S12), starts the timer 26, and starts counting the timer 26 (S13). Thereby, the usage time of the outlet 11 or the DC outlet 12 is measured.

  Next, the current control unit 14 determines whether or not the leakage has occurred by the leakage detectors 16a and 16b (S14). If the leakage has occurred, the leakage detectors 16a and 16b open the switches 18a and 18b to open the outlet 11 or The current supply to the DC outlet 12 is cut off, the leakage detection information is stored in the leakage detection history storage unit 22, and the user information (power consumption, usage time, usage fee) up to that point is totaled and stored. (S15), the process ends.

  If there is no leakage, the control unit 21 determines whether the supply current to the outlet 11 or the DC outlet 12 exceeds the overcurrent set value (S16). The unit 21 opens the switches 18a and 18b to cut off the current supply to the outlet 11 and the DC outlet 12, and stores the overcurrent detection information in the overcurrent detection history storage unit 24. Further, the user information up to that point is stored. (Power consumption, usage time, usage fee) are summed and stored (S15), and the process is terminated.

  If the current is not exceeded, the use of the power supply is continued (S17), and the control unit 21 determines whether or not the use is finished (S18). If the use is finished, the user information up to that point (power consumption, use The time and usage charges are tabulated and stored (S15), and the process is terminated. When the use of the outlet 11 or the DC outlet 12 has not ended, it is determined whether or not the usage time measured by the timer 26 has exceeded the limit value stored in the usage time limit value storage unit 25 (S19). If it is not a limit, the process returns to step S14. If it is a time limit, the user information (power consumption, usage time, usage fee) up to that point is totalized and stored (S15), and the process is terminated. Whether or not the use is finished is determined, for example, by whether or not a termination command is output from the communication terminal 32 or whether or not the supply currents Ia and Ib to the outlet 11 and the DC outlet 12 have become zero over a predetermined time. To do.

  Here, the leakage detection history information such as the leakage occurrence date and time stored in the leakage detection history storage unit 22 and the overcurrent detection such as the overcurrent detection date and overcurrent value stored in the overcurrent detection history storage unit 24 are detected. The history information is transmitted to the center server 31 in response to a request from the center server 31 and is managed by the center server 31.

  In the above description, the usage time limit value storage unit 25 for setting the usage time limit value of the outlet 11 and the DC outlet 12 and the usage time of the outlet 11 and the DC outlet 12 are set in the usage time limit value storage unit 25. Although the timer 26 for turning off the current supplied to the outlet 11 or the DC outlet 12 is provided in the current control unit 14 when the limit value is reached, it may be provided in the center server 31. In this case, when the count value of the timer 26 reaches the limit value set in the use time limit value storage unit 25, the center server 31 notifies the control unit 21 of the current control unit 14 to that effect. Become.

  The use time limit value set in the use time limit value storage unit 25 may be set in advance as a fixed value, or the center server 31 may restrict the use time to the user from the center server 31 to the communication terminal 32. The limit value designated by the user from the communication terminal 32 may be set by inquiring about the value.

  As described above, according to the first embodiment, when the outlet 11 or the DC outlet 12 is installed in a predetermined public place in advance and the user requests the power supply from the communication terminal 32 to the outlet 11 or the DC outlet 12, The center server 31 outputs a current supply command to the current control unit 14 when receiving information indicating that energization is possible using the remote operation preventing device 53 installed near the outlet 11 or the DC outlet 12. Therefore, the current supply command is output after the operation at the place where the outlet 11 and the DC outlet 12 are installed, and the outlet 11 and the DC outlet 12 are operated remotely from the outlet 11 and the DC outlet 12. Can be prevented from being energized. As a result, the user can use power without operating in a public place that is not in the consumer, and convenience is improved.

  The center server 31 transmits information on the installation location of the outlet 11 or the DC outlet 12 to the communication terminal 32 when a user requests a search for the installation location of the outlet 11 or the DC outlet 12 from the communication terminal 32. Therefore, the user can easily grasp the installation location of the outlet 11 and the DC outlet 12, and convenience is improved. The center server 31 provides detailed information on the use of the outlets 11 and the DC outlets 12 for each installation location in addition to the information on the installation locations of the outlets 11 and the DC outlets 12. The convenience of use of the outlet 12 is further improved.

  When the usage time of the outlet reaches the limit value, the current control unit 14 turns off the current supplied to the outlet 11 and the DC outlet 12, so that the outlet user mistakenly connected the electric device for a long time. Even if it is left as it is, it can be automatically turned off and safety is improved.

  Since the center server 31 aggregates user information (power consumption, usage time, usage fee) for each user, the power consumption, usage time, usage fee can be easily calculated, and accounting can be easily performed. Yes. When there is a user information (usage power consumption, usage time, usage fee) inquiry request from the communication terminal 32 by the user, the center server 31 uses the communication terminal to collect the information on the usage power charge calculated for each user. Therefore, the user can easily grasp user information (power consumption, usage time, usage fee).

  Further, the current control unit 14 monitors the supply current to the outlet 11 and the DC outlet 12, and supplies current to the outlet 11 and the DC outlet 12 so as not to exceed a predetermined overcurrent set value. Electric power can be supplied to the outlet 11 and the DC outlet 12, and it is possible to prevent adverse effects on the distribution line and the host system to which the outlet 11 and the DC outlet 12 are connected. Moreover, since the setting of the overcurrent setting value of the current control unit 14 can be changed from the center server 31, it is possible to easily cope with a change in the capacity of the outlet 11 or the DC outlet 12.

  Next, Example 2 of the public power supply system according to the embodiment of the present invention will be described. FIG. 5 is a configuration diagram of Example 2 of the public power supply system according to the embodiment of the present invention. The second embodiment is different from the first embodiment shown in FIG. 1 in that the remote control preventing device 53 is replaced with a display device 54 for displaying a variable identification mark, and the current control unit 14 can be energized. Are provided, and the control unit 21 of the current control unit 14 is provided with a gate unit 58, and the identification mark update unit 55 of the center server 31 is omitted. The same elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.

  As shown in FIG. 5, the remote operation preventing device 53 is provided with an operation button 57 for permitting energization to the outlet 11 and the DC outlet 12, and the control unit 21 of the current control unit 14 controls the operation button 57. When the operation signal is received, the gate unit 58 is opened, and the current supply command from the center server 31 is validated.

  FIG. 6 is an explanatory diagram of an operation for requesting power supply by the communication terminal 32 at the installation location of the outlet 11 or the DC outlet 12 in the second embodiment. At the place where the outlet 11 or the DC outlet 12 is installed, a remote operation preventing device 53 is provided in the vicinity of the outlet 11 or the DC outlet 12. The remote operation preventing device 53 is provided with a fixed identification mark 59 for identifying the outlet 11 and the DC outlet 12 and an operation button 57 for inputting information indicating that electricity can be supplied to the current control unit 14. FIG. 6 shows a case where the fixed identification mark 59 is a QR code.

  When the user wants to use the outlet 11 or the DC outlet 12 at the installation location, the user reads the fixed identification mark 59 by the communication terminal 32 and transmits it to the center server 31. The center server 31 inputs a fixed identification mark 59 to the outlet identification unit 36. The outlet identifying unit 36 identifies the outlet 11 and the DC outlet 12 to be supplied with current based on the fixed identification mark 59. Furthermore, the current supply command output unit 37 of the center server 31 confirms whether or not the power supply request from the communication terminal 32 is from the user. A current supply command is output to the current control unit 14 corresponding to the outlet 11 or the DC outlet 12 that has been connected.

  When receiving the current supply command from the center server 31, the current control unit 14 outputs the current control command to the gate unit 58. An operation signal from the operation button 57 is also input to the gate unit 58 of the current control unit 14. When there is an operation signal from the operation button 57, the gate unit 58 is opened and the current supply command from the center server 31 is validated. To do. That is, the control unit 21 closes the switches 18 a and 18 b and supplies the current from the distribution line 13 to the outlet 11 and the DC outlet 12.

  FIG. 7 is a flowchart showing the operation of Example 2 of the public power supply system according to the embodiment of the present invention. First, the user goes to the installation location of the outlet 11 or the DC outlet 12 that he / she wants to use, and reads a fixed identification mark 59 formed on the remote operation preventing device 53 at the installation location by the communication terminal 32 (S1). At the same time, the operation button 57 is operated (S2). This is because information indicating that energization is possible is input to the current control unit 14.

  Next, the user inputs a login password (S3). The center server 31 identifies the installation location of the outlet 11 and the DC outlet 12 to be supplied with current based on the fixed identification mark 59 (S4), and confirms whether there is authentication based on the login password (S5). . If authentication cannot be confirmed, the process ends.

  On the other hand, when the authentication is confirmed, the center server 31 displays a use confirmation screen on the communication terminal 32 (S6), and confirms whether or not the user intends to use the outlet 11 or the DC outlet 12. Perform (S7). If there is no usage confirmation from the user, the process ends. If there is a usage confirmation, the center server 31 displays a usage agreement screen on the communication terminal 32 (S8), and the user agrees to the agreement. It is confirmed whether or not (S9). When the user agrees to the terms, the center server 31 outputs a current supply command to the current control unit 14 (S10).

  The current control unit 14 determines whether there is information on whether energization is possible (S11). This is determined based on whether or not an operation signal from the operation button 57 of the remote operation preventing device 53 is input to the gate unit 58 in the gate unit 58 of the current control unit 14. When an operation signal from the operation button 57 of the remote operation preventing device 53 is input to the gate unit 58, the control unit 21 validates the current supply command (S12) and starts energization (S13). The current control unit 14 starts energization and activates the timer 26 to start counting of the timer 26 (S14). Thereby, the usage time of the outlet 11 or the DC outlet 12 is measured.

  Next, the current control unit 14 determines whether or not the leakage is generated by the leakage detectors 16a and 16b (S15). If the leakage is generated, the leakage detectors 16a and 16b open the switches 18a and 18b to open the outlet 11 or The current supply to the DC outlet 12 is cut off, the leakage detection information is stored in the leakage detection history storage unit 22, and the user information (power consumption, usage time, usage fee) up to that point is totaled and stored. (S16), the process ends.

  If there is no leakage, the control unit 21 determines whether the supply current to the outlet 11 or the DC outlet 12 exceeds the overcurrent set value (S17). The unit 21 opens the switches 18a and 18b to cut off the current supply to the outlet 11 and the DC outlet 12, and stores the overcurrent detection information in the overcurrent detection history storage unit 24. Further, the user information up to that point is stored. (Power consumption, usage time, usage fee) are summed up and stored (S16), and the process is terminated.

  If the current is not exceeded, the use of the power supply is continued (S18), and the control unit 21 determines whether or not the use is finished (S19). If the use is finished, the user information up to that point (power consumption, use The time and usage charges are tabulated and stored (S16), and the process is terminated. When the use of the outlet 11 or the DC outlet 12 has not ended, it is determined whether or not the usage time measured by the timer 26 has exceeded the limit value stored in the usage time limit value storage unit 25 (S20). If it is not a limit, the process returns to step S15. If it is a time limit, the user information (power consumption, usage time, usage fee) up to that point is totalized and stored (S16), and the process is terminated. Whether or not the use is finished is determined, for example, by whether or not a termination command is output from the communication terminal 32 or whether or not the supply currents Ia and Ib to the outlet 11 and the DC outlet 12 have become zero over a predetermined time. To do.

  In the above description, the case where the operation button 57 for permitting energization to the outlet 11 and the DC outlet 12 is provided as the remote operation prevention device 53 has been described. However, instead of the operation button 57, the outlet 11 and the DC outlet are provided. An information input device for inputting specific information for permitting energization to 12 is provided, and the current control unit 14 receives a current supply command from the center server 31 when receiving the specific information input from the information input device. May be made effective. The specific information in this case is information that can identify the user, for example, a predetermined password or biometric information. When the specific information is a predetermined password, the information input device is an input device such as a numeric keypad. When biometric authentication information (fingerprint, iris, voiceprint, etc.) is input, the biometric authentication information is input. Device.

  According to the second embodiment, when the user requests power supply from the communication terminal 32 to the outlet 11 or the DC outlet 12, the center server 31 outputs a current supply command to the current control unit 14, When the control unit 14 receives an operation signal of the operation button 57 of the remote operation preventing device 53 installed in the vicinity of the outlet 11 or the DC outlet 12 or specific information from the information input device, a current supply command from the center server 31 is received. Therefore, the current supply command is output after the operation at the installation place of the outlet 11 or the DC outlet 12 is performed, and the outlet 11 is operated by remote operation away from the outlet 11 or the DC outlet 12. It is possible to prevent electricity from being supplied to the DC outlet.

  Next, Example 3 of the public power supply system according to the embodiment of the present invention will be described. FIG. 8 is a configuration diagram of Example 3 of the public power supply system according to the embodiment of the present invention. In the third embodiment, in contrast to the second embodiment shown in FIG. 5, instead of the operation button 57 of the remote operation preventing device 53, a new identification mark which is information indicating that power can be supplied is read from the communication terminal 32 and the current control unit 14 is operated. Is provided in addition to the center server 31 with an identification sign issuing unit 61 for issuing a new identification sign to the communication terminal 32. The same elements as those in FIG.

  As shown in FIG. 8, the remote operation preventing device 53 is provided with a reading device 60 for reading a new identification mark, which is information that can be energized, from the communication terminal 32. A new identification mark is transmitted from the identification mark issuing unit 61 of the center server 31 to the communication terminal 32 when a power supply request to the outlet 11 or the DC outlet 12 is made to the center server 31.

  The reading device 60 reads a new identification mark transmitted from the center server 31 to the communication terminal 32 and inputs it to the control unit 21 of the current control unit 14. The control unit 21 of the current control unit 14 has a gate unit 58. When a new identification mark is input, the gate unit 58 is opened and the current supply command from the center server 31 is validated.

  FIG. 9 is an explanatory diagram of an operation of requesting power supply by the communication terminal 32 at the installation location of the outlet 11 and the DC outlet 12 in the third embodiment. At the place where the outlet 11 or the DC outlet 12 is installed, a remote operation preventing device 53 is provided in the vicinity of the outlet 11 or the DC outlet 12. The remote operation preventing device 53 includes a fixed identification mark 59 for identifying the outlet 11 and the DC outlet 12 and a reading device 60 for reading a new identification mark 62 which is information that can be energized to the current control unit 14. Is provided. FIG. 9 shows a case where the fixed identification mark 59 and the new identification mark 62 are QR codes.

  When the user wants to use the outlet 11 or the DC outlet 12 at the installation location, the user reads the fixed identification mark 59 by the communication terminal 32 and transmits it to the center server 31. The center server 31 inputs a fixed identification mark 59 to the outlet identification unit 36 and the identification mark issuing unit 61. The outlet identifying unit 36 identifies the fixed identification mark 59 to identify the outlet 11 and the DC outlet 12 to be supplied with current. The identification mark issuing unit 61 transmits a new identification mark 62 to the communication terminal 32 that has transmitted the fixed identification mark 59. Furthermore, the current supply command output unit 37 of the center server 31 confirms whether or not the power supply request from the communication terminal 32 is from the user. A current supply command is output to the current control unit 14 corresponding to the outlet 11 or the DC outlet 12 that has been connected.

  When receiving the current supply command from the center server 31, the current control unit 14 outputs the current supply command to the control unit 21. A new identification mark 62 from the reading device 60 of the remote operation preventing device 53 is also input to the control unit 21 of the current control unit 14. That is, the user causes the reading device 60 to read the new identification mark 62 transmitted from the center server 31 and inputs it to the control unit 21 of the current control unit 14. When a new identification mark 62 is input from the reading device 60 of the remote operation preventing device 53, the control unit 21 opens the gate unit 58 and validates the current supply command from the center server 31. That is, the control unit 21 closes the switches 18 a and 18 b and supplies the current from the distribution line 13 to the outlet 11 and the DC outlet 12.

  FIG. 10 is a flowchart showing the operation of Example 3 of the public power supply system according to the embodiment of the present invention. For the operation of the second embodiment shown in FIG. 7, instead of step S2 for operating the operation button, step S2a for displaying a new identification mark and step S2b for inputting a new identification mark are provided.

  In FIG. 10, the user first goes to the installation location of the outlet 11 or the DC outlet 12 that he / she wants to use, and reads the fixed identification mark 59 formed on the remote operation preventing device 53 at the installation location by the communication terminal 32 (S1). ). The fixed identification mark 59 read by the communication terminal 32 is transmitted from the center server 31. When the fixed identification mark 59 is received, the center server 31 sends the fixed identification mark 59 to the communication terminal 32 that has transmitted the fixed identification mark 59. A new identification mark 62 is transmitted. Thereby, the new identification mark 62 is displayed on the communication terminal 32 (S2a). The user causes the reading device 60 of the remote operation preventing device 53 to read the new identification mark 62 received from the center server 31, and inputs the new identification mark to the current control unit 14 (S2b). As a result, information indicating that energization is possible is input to the current control unit 14.

  Next, the user inputs the login password (S3), and the center server 31 identifies the installation location of the outlet 11 and the DC outlet 12 to be supplied with current based on the fixed identification mark 59 (S4), and login. It is confirmed whether there is authentication based on the password (S5). If authentication cannot be confirmed, the process ends. On the other hand, when the authentication is confirmed, the center server 31 displays a use confirmation screen on the communication terminal 32 (S6), and confirms whether or not the user intends to use the outlet 11 or the DC outlet 12. If the use confirmation is not received from the user, the process is terminated. If the use is confirmed, the center server 31 displays a use agreement screen on the communication terminal 32 (S8). It is confirmed whether or not the agreement is agreed (S9). When the user agrees to the terms, the center server 31 outputs a current supply command to the current control unit 14 (S10).

  Then, the current control unit 14 determines whether there is information indicating that energization is possible (S11). This is determined by whether or not a new identification mark 62 is input from the reading device 60 of the remote operation preventing device 53 to the current control unit 14. When a new identification mark 62 is input from the reading device 60 of the remote operation preventing device 53, the control unit 21 of the current control unit 14 validates the current supply command (S12) and starts energization (S13). The current control unit 14 starts energization and activates the timer 26 to start counting of the timer 26 (S14). Thereby, the usage time of the outlet 11 or the DC outlet 12 is measured.

  Next, the current control unit 14 determines whether or not the leakage is generated by the leakage detectors 16a and 16b (S15). If the leakage is generated, the leakage detectors 16a and 16b open the switches 18a and 18b to open the outlet 11 or The current supply to the DC outlet 12 is cut off, the leakage detection information is stored in the leakage detection history storage unit 22, and the user information (power consumption, usage time, usage fee) up to that point is totaled and stored. (S16), the process ends.

  If there is no leakage, the control unit 21 determines whether the supply current to the outlet 11 or the DC outlet 12 exceeds the overcurrent set value (S17). The unit 21 opens the switches 18a and 18b to cut off the current supply to the outlet 11 and the DC outlet 12, and stores the overcurrent detection information in the overcurrent detection history storage unit 24. Further, the user information up to that point is stored. (Power consumption, usage time, usage fee) are summed up and stored (S16), and the process is terminated.

  If the current is not exceeded, the use of the power supply is continued (S18), and the control unit 21 determines whether or not the use is finished (S19). If the use is finished, the user information up to that point (power consumption, use The time and usage charges are tabulated and stored (S16), and the process is terminated. When the use of the outlet 11 or the DC outlet 12 has not ended, it is determined whether or not the usage time measured by the timer 26 has exceeded the limit value stored in the usage time limit value storage unit 25 (S20). If it is not a limit, the process returns to step S15. If it is a time limit, the user information (power consumption, usage time, usage fee) up to that point is totalized and stored (S16), and the process is terminated. Whether or not the use is finished is determined, for example, by whether or not a termination command is output from the communication terminal 32 or whether or not the supply currents Ia and Ib to the outlet 11 and the DC outlet 12 have become zero over a predetermined time. To do. In the case of Example 3, the same effect as that of Example 2 can be obtained.

DESCRIPTION OF SYMBOLS 11 ... Outlet, 12 ... DC outlet, 13 ... Distribution line, 14 ... Current control part, 15 ... Electric wire, 16 ... Leakage detector, 17 ... Current detector, 18 ... Switch, 19 ... AC / DC converter, 20 ... measurement storage unit, 21 ... control unit, 22 ... leakage detection history storage unit, 23 ... overcurrent set value storage unit, 24 ... overcurrent detection history storage unit, 25 ... use time limit value storage unit, 26 ... timer, 27 ... Communication port, 28 ... Converter, 29 ... Internet, 30 ... Telephone network, 31 ... Center server, 32 ... Communication terminal, 33 ... Internet, 34 ... Mobile phone, 35 ... Personal computer, 36 ... Outlet identification unit, 37 ... Current supply command output unit 38 ... Overcurrent set value setting unit 39 ... Identification marker display unit 40 ... Identification marker 41 ... Voltage detector 42 ... Power consumption storage unit 43 ... Usage time storage unit 4 ... Installation location information, 45 ... Detailed use information, 46 ... Used energy information, 47 ... Use time information, 48 ... Use charge information, 49 ... Installation location information providing unit, 50 ... User information providing unit, 51 ... Identification indicator Display unit 52 ... Identification mark 53 ... Remote operation preventing device 54 ... Display device 55 ... Identification mark update unit 56 ... Variable identification mark 57 ... Operation button 58 ... Gate part 59 ... Fixed identification mark , 60 ... reading device, 61 ... identification sign issuing unit, 62 ... new identification sign, 63 ... charge information by installation location

Claims (1)

An outlet installed in advance in a predetermined public place and supplied with power from the distribution line,
A current control unit for controlling whether or not to supply current supplied between the outlet and the distribution line and supplied to the outlet;
A communication terminal that requests power supply to the outlet;
A remote operation preventing device installed near the outlet and generating information indicating that the outlet can be energized by a user's actual operation;
The communication terminal is connected via the Internet, and the current control unit is connected via a communication network. When a user requests power supply from the communication terminal to the outlet, the remote control preventing device A center server that determines whether there is reception of energized information and when there is received energized information, a center server that outputs a current supply command to the current control unit ;
The remote operation preventing device has a display device that displays a variable identification mark for identifying the outlet that is changed each time the outlet is used,
The center server reads the variable identification mark displayed on the display device into the communication terminal and transmits it to the center server by the user, and receives the variable identification mark from the communication terminal. A public power supply system , characterized in that it is determined that the information indicating that energization is possible is received .

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