KR101959772B1 - Fault section sensing apparatus of high voltage underground distribution line - Google Patents

Abstract

The present invention relates to a fault section sensing apparatus of an extra-high voltage underground distribution line and, more specifically, to a fault section sensing apparatus of an extra-high voltage underground distribution line which prevents a fault or an operation error occurring when a cylinder is submerged in sewage in accordance with a change in a water level of an electric culvert, while a fault of a sensor, which senses a fault section of a distribution line installed under the ground, can be notified and inspected on a set cycle. The fault section sensing apparatus of an extra-high voltage underground distribution line comprises a sensor unit, a data collection apparatus, a top server and a sensing unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a failure detection device for a high-voltage underground distribution line,

[0001] The present invention relates to an apparatus for detecting a fault section in an overhead underground power distribution line in the field of power distribution technology. More particularly, the present invention relates to a fault detection section for detecting a fault section of a distribution line installed in the ground, The present invention also relates to an apparatus for detecting a fault in an underground power distribution line for preventing a malfunction or an operation error that may occur due to the submergence of a cylinder into sewage in accordance with a change in the level of a power source.

Along with the development of IT technology, monitoring devices are installed in the main equipment used in distribution lines, and real-time monitoring is possible.

Underground distribution lines are mainly installed in densely populated urban areas and are managed as one of the important distribution facilities.

However, in case of underground distribution lines, real-time monitoring system configuration is not possible due to installation and operation cost problems, and applicable monitoring technology is limited.

So far, underground distribution lines have been subjected to periodic off-line diagnosis to determine the deterioration state.

In order to diagnose this skew, there is a problem that the line should be shut down and the accuracy of diagnosis is not high.

As a conventional technique which partially improves such a problem, Korean Patent Registration No. 10-1439399 (Apr. 12, 2014) discloses an optical composite underground transmission, distribution and substation cable monitoring apparatus.

However, such a conventional optical complex underground transmission, distribution, and transmission cable monitoring apparatus has a problem that the cylinder is fixed to the power port and can not cope with a change in the level of the power port.

As a result, there is a problem that it is difficult to prevent a malfunction, an operation error, and the like that may occur due to the flooding of the cylinder.

Korea Patent Registration No. 10-1439399 (Sep. 2014, 2014) 'Optical Combined Underground Transmission, Distribution and Transmission Cable Monitoring Device'

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a system and method for notifying a failure of a sensor for detecting a failure section of a distribution line installed in the earth, And to provide a fault section sensing device for a special high-pressure underground distribution line for preventing a malfunction or an operation error that may occur due to the submerging of the cylinder into the sewer depending on the water level change.

The problems to be solved by the present invention are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a power supply apparatus including: a sensor unit for sensing a state of a distribution line; A data collection device 200 for collecting sensing information of the distribution line detected by the sensor unit 100; An upper server 300 for receiving the sensing information from the data collection device 200 and monitoring the state of the distribution line based on the sensing information; A control unit (120) for generating operation state information of at least one of an operation state of a ventilation facility, which is a power facility in a power socket, and an operation state of an illumination; And a sensing unit 700 for sensing the failure of the sensor unit 100 when the set time has elapsed; The sensor unit 100 includes a partial discharge detection sensor 104 installed at a predetermined interval in a distribution line to sense a partial discharge of the distribution line; A temperature sensing sensor (102) installed in the form of an optical cable together with a distribution line to sense the temperature of the distribution line; A water level sensor (106) for detecting the level of a power port in which a power line is installed and detecting whether the power line is flooded; And a deformation detecting sensor 108 installed at a predetermined interval in the power distribution line to sense the deformation of the distribution line. The sensing unit 700 includes a resistor 712 connected to the temperature sensing sensor 102, An overheat sensing unit comprising a first coil 714 and a power supply 710 for supplying current to the first coil 714 to generate heat; A discharge detection unit 720 for supplying a current to the partial discharge detection sensor 104 to check whether the partial discharge detection sensor 104 is faulty; The translucent panel 736 is moved forward or backward between the light emitting unit 732 and the light receiving unit 734 so as to determine whether the water level detecting sensor 106 detecting the water level by the light emitting unit 732 and the light receiving unit 734 has failed. And a cylinder (730) for moving the piston backward; And a deformation detecting unit for detecting a failure of the deformation detecting sensor (108) by providing a deformation detecting sensor (108) for detecting a deformation by photographing an outer shape of the distribution line and a deformation detecting sensor (108) The sensing device further includes a protection unit (800) for preventing the cylinder (730) from being submerged in response to a change in the level of the electric power source, the protection unit (800) comprising: a support plate (810); A support (820) extending upward from the support plate (810) and to which a rear end of the cylinder (730) is fixed; Support means 830 for supporting the support plate 810 on the bottom surface of the electric power source so as to be movable up and down; A float 840 provided at a lower portion of the support plate 810 to float on the sewage flowing into the power port; And a guide means (850) for vertically movably supporting a front end portion of the cylinder (730) from the bottom surface of the electric power source, wherein the lower portion is fixed to the bottom surface of the power hole, A support bar 831 passing through both sides of the support frame 810; A fixing member 832 provided on the support bar 831 to prevent the support plate 810 from being separated from the support bar 831; And a spring 833 coupled to the outside of the support bar 831 to be positioned below the support plate 810. The float 840 is coupled with the support plate 810 The cylinder 730 is raised and lowered to prevent the cylinder 730 from being submerged in the sewage, and the spring 833 can stably support both sides of the support plate 810 from the bottom surface of the power tool in a normally contracted state And the rising and falling of the support plate 810 are smoothly performed while the float 840 is lifted and lowered according to the rise of the power level of the electric power source. do.

According to the present invention, first, there is an effect that the underground distribution line can be monitored and diagnosed over the entire area by the underground distribution line without the inserting of the inspectors.

Second, since a sensing unit for sensing a failure of the sensor unit that detects the state of the underground distribution line is provided, it is possible to determine whether the sensor unit is malfunctioning according to a set period, thereby preventing a safety accident caused by a malfunction or breakage of the sensor unit.

Thirdly, it is possible to effectively cope with the change in the water level of the electric power source, thereby preventing malfunction or operation error which may occur due to the submergence of the cylinder in the sewage.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an apparatus for detecting a fault section of an extra-high voltage underground distribution line according to the present invention. FIG.
2 is a block diagram showing a data collecting apparatus in a fault section detecting apparatus for a special high voltage underground distribution line according to the present invention.
3 is a block diagram showing a sensing unit in a fault section sensing apparatus of an extra high voltage underground distribution line according to the present invention.
4 is a side view showing a state where a protection section is provided in a fault section detection apparatus of an extra high voltage underground distribution line according to the present invention.
Fig. 5 is a partially enlarged view showing the protecting portion in Fig. 4. Fig.
And
Fig. 6 is a front view showing the guide means in Fig. 4. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, an apparatus for detecting a fault section of an extra high voltage underground distribution line according to the present invention includes a sensor unit 100, a control unit 120, a data collecting apparatus 200 and an upper server 300, (700).

The sensor unit 100 monitors the state of the power line and the state of the power line installed in the power line. The sensor unit 100 includes a partial discharge detection sensor 104 for detecting a partial discharge of a distribution line, a temperature detection sensor 102 for measuring a distribution temperature of the distribution line, a strain detection A sensor 108, and a water level sensor 106 for detecting whether or not the electric power line is flooded.

The partial discharge detection sensor 104 detects a partial discharge in a distribution line and is installed at a conductor portion of the distribution line and is disposed at a predetermined position on a distribution line to be monitored.

Conventionally, the partial discharge is monitored only at the connection portion of the distribution line where the partial discharge is likely to occur. However, the reliability of the partial discharge monitoring system can be improved by monitoring and installing the partial discharge monitoring sensor through the distribution line.

The temperature sensor 102 may be provided as a sensor in the form of an optical cable installed together with a distribution line.

In this case, the temperature sensing is not a point, but a continuous distribution throughout the optical cable.

The water level sensor 106 is provided for monitoring the immersion of the power line, and includes a light emitting unit 732 for emitting light, a light receiving unit 732 for sensing the speed at which the light emitted from the light emitting unit 732 is incident, Gt; 734 < / RTI >

The control unit 120 senses the operation state of the ventilation equipment, the lighting equipment, and the opening and closing states of the doors, which are the main facilities of the underground power source, generates the operation state information thereof, receives the control signal from the data collection device 200, The operation can be controlled.

In addition, the control unit 120 transmits a driving signal to the monitoring unit 700 when the set period has elapsed, so that the controller 120 can determine whether the sensor unit 100 is faulty by the operation of the monitoring unit 700. [

The data collecting apparatus 200 collects the sensing information of the sensor unit 100 and the operation state information of the controller 120 and transmits the collected information to the upper server 300. The data collecting apparatus 200 is provided with a plurality of power sources at predetermined intervals so as to transmit the respective positions of the sensor unit 100 and the sensed information measured.

The data collecting apparatus 200 and the sensor unit 100 can communicate in a sleep & wake up manner at predetermined time intervals. This is because the data collecting device 200, which can always receive power, transmits a synchronization packet to the sensor unit 100, and the sensors included in the sensor unit 100 operate in synchronization with the synchronization packet. The sleep time can be set by the operator through the upper server 300, and the sensor unit 100 receives the synchronization packet after wake up and transmits the sensing information to the data collection device 200.

The upper server 300 receives the sensing information and the operation state information collected by the data collecting apparatus 200, and can monitor the state of the distribution line and the operation state of the electric power facility based on the received information. The upper server 300 stores and manages sensing information and operation state information in a database, and provides monitoring and diagnostic environments to the distribution lines using the stored information.

For example, it is possible to monitor the partial discharge of the distribution line, provide diagnostic information about the partial discharge to the operator, calculate the distribution capacity of the distribution line based on the temperature sensing information on the distribution line, and provide the distribution capacity to the operator.

In addition, by using flood sensor and water level sensor, it is possible to monitor the possibility of inundation in the electric power pit and utilize it to prevent flood damage in advance. That is, the operator can determine whether to check the distribution line or equipment repair based on the sensing information received from the data collection device 200.

In addition, the operation status of each facility can be monitored and the operation can be controlled based on the operation state information of the power saving facility received from the control unit 120. For example, in the case of the ventilation system, the concentration (ppm) of CO, CO2, H2S, CH4, etc. of the power source is higher than a certain level or operates at predetermined time intervals. If not, the ventilation system can be remotely operated or the ventilation system can be checked and repaired.

The upper server 300 generates a control signal for controlling the operation of each facility and transmits the control signal to the control unit 120 through the data collection device 200 to determine whether or not each facility is operated.

The parent server functions as an HMI (Human Machine Interface), which provides an interface for the operator to control the power equipment. When a partial discharge occurs in the distribution line, the distribution capacity is not constant, or the distribution line is flooded, An alarm signal can be output when a fault occurs in the electric power facility. The alarm signal may be implemented by outputting a warning message on the display screen, or by transmitting the message to the operator's e-mail or cellular phone registered in the database.

The data collecting apparatus 200 includes a data collecting unit 210, a data transmitting unit 220, a central processing unit 230, and a power supply unit 240.

The data collection unit 210 is connected to the sensor unit 100 and the control unit 120 and collects sensing information and operation state information and transmits the control signal received from the upper server 300 to the control unit 120 .

At this time, the data collecting unit 210 and the sensor unit 100 may perform wired or wireless communication. When the wired communication is performed, the data collecting unit 210 and the sensor unit 100 may be connected by an analog signal line, or may use RS232, RS422, RS485 serial communication, or Ethernet communication, You can use wireless LAN, Zigbee or Bluetooth.

The data transmission unit 220 is connected to the upper server 300 and transmits sensing information and operation state information and receives a control signal from the upper server 300. The data transfer unit 220 and the upper server 300 may be connected to each other through a local area network (LAN), and may be an Ethernet-based TCP / IP protocol.

In addition, IEC61850, a standard for substation communication, can be applied.

The central processing unit 230 stores sensing information and operation state information in a storage unit (not shown), and processes data to be transmitted and received by the data collecting unit 210 and the data transmitting unit 220 according to a communication standard. The central processing unit 230 generates a synchronization packet, transmits the generated synchronization packet to the sensor through the data collecting unit 210, and collects the sensing information according to the sleep & wake up method.

The power supply unit 240 plays a role of supplying power so that each functional unit of the data collection device 200 can operate.

At this time, it is preferable that the power supply unit 240 is a rechargeable battery that can be charged and discharged. In the case of charging the power supply unit 240, a battery floating charging method can be used. In the case where the data collecting apparatus 200 performs communication with the sensor unit 100, the control unit 120, or the upper server, it may be influenced by the environment of the power port. Particularly, Can be exposed.

In the case of the floating charging method, since the power source can be charged through the voltage lower than the equal charging method, there is an effect that the amount of noise generated in the communication environment can be further reduced than in the equal charging method.

Also, the power supply unit 240 can be charged through the battery power storage system.

The battery power storage system refers to a facility for storing the nighttime power by using a battery to equalize the power load of the week relatively higher than the nighttime, and then to use the battery during the daytime.

The battery power storage system can be installed directly in an area where electric power is required, and in the present invention, it can be installed in a power port to supply charging power to the data collection device 200.

The sensing unit 700 includes a first coil 714 wound around a resistor 712 connected to the temperature sensor 102 and a power supply 710 supplying current to the first coil 714 to generate heat, A discharge detection unit 720 for supplying a current to the partial discharge detection sensor 104 to check whether the partial discharge detection sensor 104 is faulty and a discharge detection unit 720 for detecting a failure of the partial discharge detection sensor 104. The light emission unit 732 and the light receiving unit 734, And a cylinder 730 for moving the semi-transparent panel 736 forward or backward between the light emitting unit 732 and the light receiving unit 734 so as to determine whether the water level detecting sensor 106 detecting the water level is faulty, And a deformation detecting unit for detecting the failure of the deformation detecting sensor 108 by providing a deformation detecting sensor 108 for detecting deformation by photographing the outer shape of the distribution line.

When the driving signal is transmitted from the control unit 120 after the elapse of the set period, the power is supplied from the power supply 710 to the resistor 712 to generate heat from the first coil 714, And the like.

According to the driving signal transmitted from the controller 120, a current is supplied from the current supply unit 720 to the partial discharge detection sensor 104 to check whether the partial discharge detection sensor 104 senses the discharge.

The rod is projected from the cylinder 730 in accordance with the driving signal transmitted from the control unit 120 so that the translucent panel 736 is advanced at a distance between the light emitting unit 732 and the light receiving unit 734, The time when the irradiated light arrives at the light receiving portion 734 is delayed to check whether the water level detecting sensor 106 is malfunctioning.

In addition, in response to the drive signal transmitted from the control unit 120, the deformation detecting sensor 108 is checked for failure by transmitting a deformation signal from the imaging system to the deformation detecting sensor 108.

Since the inspection operation is performed as described above, it is possible to determine whether the sensor unit 100 is malfunctioning, so that it is possible to determine whether a safety accident is normally monitored by the failure of the sensor unit 100 .

4 to 6, the apparatus for detecting a fault section of an extra-high voltage underground power distribution line according to the present invention further includes a protection unit 800 for preventing the cylinder 730 from being flooded corresponding to a change in the water level of the power tool do.

The protection unit 800 prevents a malfunction or an operation error that may occur as the cylinder 730 is submerged in the sewage in accordance with a change in the water level of the power source.

The protector 800 includes a support plate 810 and a strut 820 extending upward from the support plate 810 and to which the rear end of the cylinder 730 is fixed and a support plate 810, A supporting means 830 for supporting the cylinder 730, a float 840 provided at the lower part of the supporting plate 810 to float on the sewage introduced into the power port, and a guide for supporting the front end of the cylinder 730 from the bottom surface of the power inlet, (850).

The support plate 810 has a rectangular shape and is provided at an upper portion of the float 840 to protect the float 840 while allowing the support 820 to be stably supported.

The lower portion of the column 820 is fixed to the central portion of the support plate 810, and the upper portion thereof is formed to extend upward.

The pillars (820) can be made into a tubular shape having a lower portion, an upper portion and a lower portion opened to minimize the weight.

The support means 830 includes a support bar 831 whose upper portion is fixed to the bottom surface of the electric power unit and whose upper portion passes through both sides of the support plate 810 and an upper portion of the support bar 831, And a spring 833 coupled to the outside of the support bar 831 so as to be positioned below the support plate 810. [

Both sides of the support plate 810 protrude outwardly from the float 840.

The support bars 831 are disposed on both sides of the float 840 so that the support plates 810 can be coupled to each other to be movable up and down.

The supporting bar 831 is threaded on the outer circumferential surface and the fixing member 832 is screwed to the outside of the upper portion of the supporting bar 831 while forming a thread on the inner circumferential surface.

The fixing member 832 can be raised and lowered in the longitudinal direction of the support bar 831 in accordance with the rotation and appropriately adjust the height at which the support plate 810 can be raised and lowered.

The support means 830 may further include an escape prevention cap 834 to prevent the escape of the securing member 832 from the support bar 831 while being coupled to the upper portion of the support bar 831.

The spring 833 is coupled to the outside of the support bar 831 so as to be positioned below the support plate 810 and stably supports both sides of the support plate 810 from the bottom surface of the power socket.

Accordingly, the spring 833 can prevent breakage or deformation of the float 840, which may be generated when the load of the column 820 and the support plate 810 is concentrated in the float 840.

In addition, the spring 833 stably supports both sides of the support plate 810 from the bottom surface of the power source in a normally contracted state. The spring 833 relaxes as the float 840 ascends and descends as the power level of the power source rises, So that the lifting and lowering can be performed smoothly.

The float 840 can take various known forms to float on the sewage and has a floatation force to such an extent that the cylinder 730 can be lifted and lowered together with the support plate 810 while floating in accordance with the rise of the water level of the electric sphere .

The guide means 850 guides the up and down movement of the cylinder 730 in accordance with the rise and fall of the support plate 810 in accordance with the change of the level of the electric sphere so that the cylinder 730 together with the support plate 810 can be kept substantially horizontal do.

The guide means 850 includes a guide plate 851 provided on both sides of the front end of the cylinder 730 and a guide bar 852 fixed to the bottom of the power hole at the bottom and passing through the guide plate 851, A cushioning member 853 coupled to the outside of the guide bar 852 to be positioned below the guide bar 851 and an adjusting member 854 screwed to the outside of the guide bar 852 to be positioned below the cushioning member 853 .

The cushioning member 853 has a cylindrical shape opening up and down, and is made of a material that can float on the sewage, and is most preferably made of urethane foam or the like.

The cushioning member 853 supports the front end of the cylinder 730 while lifting in accordance with the rise in the level of the power sphere and allows the cylinder 730 to be raised and lowered with the support plate 810 in a substantially horizontal state.

The guide bar 852 is formed with a nut on its outer circumferential surface, and the adjusting member 854 is screwed to the outside of the guide bar 852 while forming a thread on the inner circumferential surface.

The adjusting member 854 is disposed at the lower portion of the guide bar 852 to support the buffer member 853 while pushing or releasing the buffer member 853 to or from the guide plate 851 while moving up and down according to the rotation .

Therefore, the protection unit 800 can raise and lower the cylinder 730 in accordance with the rise in the water level of the electric sphere in response to the change in the water level of the electric sphere, so that the cylinder 730 can be prevented from being damaged or malfunction And the like can be prevented.

It is to be understood that the present invention is not limited to the above-described embodiment, but may be modified and changed without departing from the scope and spirit of the invention as defined in the appended claims, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

100: sensor unit 120:
200: data collecting unit 210: data collecting unit
220: data transferring unit 230: central processing unit
240: power supply unit 300: upper server
700: sensing part 800: protection part
810: Support plate 820: Support
830: support means 831: support bar
832: Fixing member 833: Spring
840: float 850: guide means
851: guide plate 852: guide bar
853: buffer member 854: adjusting member

Claims (1)

A sensor unit (100) for sensing a state of a distribution line;
A data collection device 200 for collecting sensing information of the distribution line detected by the sensor unit 100;
An upper server 300 for receiving the sensing information from the data collection device 200 and monitoring the state of the distribution line based on the sensing information; And
And a sensing unit (700) for sensing a failure of the sensor unit (100);
The sensor unit (100)
And a water level detection sensor (106) for detecting the water level of the electric power line in which the power line is installed and detecting whether the power line is flooded,
The sensing unit (700)
The translucent panel 736 is moved forward or backward between the light emitting unit 732 and the light receiving unit 734 so as to determine whether the water level detecting sensor 106 detecting the water level by the light emitting unit 732 and the light receiving unit 734 has failed. And a cylinder (730) for reversing the temperature of the high-pressure underground distribution line,
Further comprising a protection unit (800) for preventing the cylinder (730) from being submerged in response to a change in the water level of the power source,
The protection unit (800)
A support plate 810;
A support (820) extending upward from the support plate (810) and to which a rear end of the cylinder (730) is fixed;
Support means 830 for supporting the support plate 810 on the bottom surface of the electric power source so as to be movable up and down;
A float 840 provided at a lower portion of the support plate 810 to float on the sewage flowing into the power port; And
And guide means (850) for supporting the front end portion of the cylinder (730) so as to be movable up and down from the bottom surface of the electric power source,
The support means (830)
A support bar 831 whose lower portion is fixed to the bottom surface of the electric power unit and whose upper portion passes through both sides of the support plate 810;
A fixing member 832 screwed onto the supporting bar 831 to prevent the supporting plate 810 from being separated from the supporting bar 831;
A spring 833 coupled to the outside of the support bar 831 to be positioned below the support plate 810; And
And an escape prevention cap 834 coupled to an upper portion of the support bar 831 to prevent the securing member 832 from separating from the support bar 831,
The float (840)
The cylinder 730 is lifted and lowered together with the support plate 810 in accordance with the rise of the water level of the electric power port, thereby preventing the cylinder 730 from being submerged in the sewage,
The fixing member 832,
The height of the support plate 810 can be raised and lowered in the longitudinal direction of the support bar 831 according to the rotation,
The spring (833)
The support plate 810 can be smoothly lifted and lowered while the float 840 is loosened by lifting and lowering the float 840 due to the rise of the power level of the power source while the both sides of the support plate 810 are stably supported from the bottom surface of the power source in a normally contracted state, In addition,
The guide means (850)
A guide plate 851 provided on both sides of the front end of the cylinder 730;
A guide bar 852 whose lower portion is fixed to the bottom of the electric power tool and whose upper portion passes through the guide plate 851;
A buffer member 853 coupled to the outside of the guide bar 852 so as to be positioned below the guide plate 851; And
And an adjusting member 854 screwed to the outside of the guide bar 852 so as to be positioned below the buffer member 853,
The cushioning member 853,
And supports the front end portion of the cylinder 730 while rising in accordance with the rise of the water level of the electric power source, while allowing the cylinder 730 to be raised and lowered together with the support plate 810,
The adjustment member 854,
Wherein the cushioning member (853) is pressed or released by the guide plate (851) while ascending or descending according to the rotation of the cushioning member (851).

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