KR101494357B1 - System for monioring and controlling auxiliary power unit - Google Patents

Abstract

An embodiment of the present invention relates to an auxiliary power monitoring and control system, and a technical problem to be solved is to remotely monitor power state information of an auxiliary power source of a TRS wireless repeater installed in a substation substation or an underground power station, And controllable.
For this purpose, an embodiment of the present invention provides a main power supply system for supplying main power to a TRS wireless repeater or a plurality of power facilities, an auxiliary power source for supplying auxiliary power to the TRS wireless repeater or a plurality of power facilities, A system for remotely monitoring and controlling a supply facility, the method comprising: measuring a power supply amount of the main power and the auxiliary power between the auxiliary power supply facility and the TRS wireless repeater or a plurality of power facilities, and periodically charging / Auxiliary charge / discharge device; And an auxiliary charging / discharging device connected to the auxiliary charging / discharging device through a wired / wireless communication network to receive a main power source and an auxiliary power source from the auxiliary charging / discharging device and monitor the operation states of the main power source and the auxiliary power source, Disclosed herein is an auxiliary power monitoring and control system including an administrator terminal for discharging power.

Description

TECHNICAL FIELD [0001] The present invention relates to an auxiliary power monitoring and control system,

One embodiment of the present invention relates to an auxiliary power monitoring and control system.

The power supply facilities and TRS repeater of all the devices installed at the substation are equipped with a backup power source (auxiliary battery) in addition to the main power source (AC 220V) for stable operation of the equipment.

In particular, underground substations or underground power stations are more likely to interfere with the frequency of the TRS repeater in the field. Therefore, due to the characteristics of the underground power sphere, a signal amplifier of the TRS repeater should be installed every predetermined interval in the underground power source to enable stable communication. In other words, when the TRS signal amplifier and other facilities are installed and operated, the main power source and the auxiliary battery power source can be configured to operate the device at all times in an emergency even in the event of failure to supply main power such as power failure.

As described above, the backup power source of all the general equipments is operated by the battery, but the battery is charged and discharged for a certain period of time, the voltage is lowered to a certain level due to the characteristics of the battery, and the battery life is remarkably reduced. For example, a battery that performs a normal charge / discharge operation usually has a life of 2 to 3 years, and when stored in a charged or discharged state, the average life is less than one year.

In addition, the TRS repeater amplifier facility installed in the substation electric power facilities and the substation electric power facilities are operated without any additional discharge circuit for discharging the battery, and the battery life can be measured and monitored There is a problem that the manager needs to discharge the battery directly (for example, the MRTU usually discharges for 30 minutes to 1 hour or more) at every predetermined time, or to check and replace the battery whose life is shortened do.

As a result, there is a secondary loss due to an increase in maintenance cost due to shortening of battery replacement cycle as well as human loss.

Japanese Patent Application Laid-Open No. 10-2014-0053507 'Discharge test apparatus for a battery for a power supply device' Open Patent Publication No. 10-2006-0014753 'Dual power structure mobile terminal and method using the same'

An embodiment of the present invention provides an auxiliary power monitoring and control system that can remotely monitor and control power state information of an auxiliary power source of a TRS wireless repeater installed in an underground substation or an underground power station of a substation.

The auxiliary power monitoring and control system according to an embodiment of the present invention may include a main power supply unit for supplying main power to the TRS wireless repeater or a plurality of power facilities and a main power supply unit for supplying auxiliary power to the TRS wireless repeater or a plurality of power facilities A system for remotely monitoring and controlling an auxiliary power supply system for supplying power, the system comprising: a main power source and an auxiliary power source for measuring a power source amount between the auxiliary power source equipment and the TRS wireless repeater or a plurality of power facilities, An auxiliary charging / discharging device for periodically charging / discharging the battery; And an auxiliary charging / discharging device connected to the auxiliary charging / discharging device through a wired / wireless communication network to receive a main power source and an auxiliary power source from the auxiliary charging / discharging device and monitor the operation states of the main power source and the auxiliary power source, The auxiliary charging / discharging apparatus comprising: a communication unit for transmitting / receiving data to / from an external device; A first power supply monitoring unit for monitoring a power supply amount of the main power supply; A second power monitoring unit for monitoring a power amount of the auxiliary power; An address designating unit for designating the auxiliary power supply equipment as a master or a slave; A relay unit for supplying or disconnecting power to the auxiliary power supply facility; A charge / discharge control unit for periodically charging or discharging the auxiliary power supply equipment; A discharge stop section for stopping discharge when the auxiliary power supply apparatus reaches a discharge stop voltage according to a preset discharge stop voltage; An alarm signal output unit for outputting an alarm signal to the outside when the power amount of the auxiliary power source is equal to or less than a preset first reference voltage value; A display unit for displaying power amount information of the auxiliary power source; And a controller for controlling the operation of each component and supplying auxiliary power to the auxiliary power supply when the power of the main power is less than a second reference voltage.

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The auxiliary charging / discharging device may be provided in a plurality of corresponding to the TRS wireless repeater or a plurality of power supply facilities, and the plurality of auxiliary charging / discharging devices may be designated as masters or slaves by the address specifying part.

Wherein the manager terminal receives operation state information from the auxiliary charge / discharge device in real time, and controls the operation of the auxiliary charge / discharge device based on the operation state information, wherein the charge / As shown in FIG.

The auxiliary power monitoring and control system according to an embodiment of the present invention periodically charges and discharges the auxiliary power through the charging and discharging circuit for the auxiliary power as well as the monitoring function of the main power and the auxiliary power, , It is possible to operate the system more efficiently by reducing the maintenance cost and wasted manpower.

1 is a view schematically showing an auxiliary power monitoring and control system according to an embodiment of the present invention.
2 is a view for explaining the operation of an auxiliary power monitoring and control system according to an embodiment of the present invention.
3 is a block diagram schematically showing the auxiliary charge / discharge apparatus of FIG.
Fig. 4 is a circuit diagram in which the auxiliary charge / discharge apparatus of Fig. 1 is actually implemented. Fig.
5A and 5B are diagrams showing an example of operation state information of the auxiliary charge / discharge apparatus outputted through the administrator terminal of FIG.

The terms used in this specification will be briefly described and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, without departing from the spirit or scope of the present invention. Also, the terms "part," " module, "and the like described in the specification mean units for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

2 is a view for explaining an operation of an auxiliary power monitoring and control system according to an embodiment of the present invention, and FIG. 2 is a view for explaining an operation of an auxiliary power monitoring and control system according to an embodiment of the present invention. FIG. 3 is a block diagram schematically showing the auxiliary charging / discharging device of FIG. 1, FIG. 4 is a circuit diagram in which the auxiliary charging / discharging device of FIG. 1 is actually implemented, Fig. 8 is a diagram showing an example of operation state information of the charge and discharge apparatus.

1 and 2, an auxiliary power monitoring and control system according to an embodiment of the present invention includes a main power supply unit 21 for supplying main power to a TRS wireless repeater or a plurality of power facilities 10, And is a system for remote monitoring and control of the auxiliary power supply facility 22 for supplying auxiliary power to the TRS wireless repeater or a plurality of power facilities 10 in case of power shortage.

A plurality of power supply facilities in this specification includes an MRTU, a communication device, a battery, a rectifier, etc. for power monitoring, a thermo-hygrostat for air conditioning or fire fighting, a temperature and humidity device, an air conditioner, a fire receiver, And the like, but it does not limit the type of the power supply facility.

On the other hand, the power supply system using the battery as the auxiliary power source does not have a separate surveillance and battery discharge function, and is used as a backup power source in an emergency after being charged through the battery charging circuit. In particular, the TRS repeater equipment is installed and operated on the substation site. In addition to the main power source (AC220V), a supplementary battery is additionally provided for the stable operation of the TRS repeater. In the present invention, the power status information of a back-up battery of a TRS wireless repeater installed in an underground substation of a substation or an underground power station, i.e., a battery and other power facilities, can be monitored and controlled by a remote administrator terminal . In addition, the present auxiliary power monitoring and control system monitors the charging and discharging of the battery, the current battery voltage, and the like, and diagnoses and controls the state information of the existing and new battery charging facilities at a remote location through the NMS. In addition, the auxiliary power monitoring and control system can easily grasp the status information through a display made of LED or the like so as to easily understand the current operation status of each equipment in order to monitor the auxiliary power and main power.

To this end, the present auxiliary power monitoring and control system includes a plurality of auxiliary charging / discharging devices 30 and an administrator terminal 40.

The auxiliary charge / discharge unit 30 measures the amount of power of the main power and the auxiliary power between the auxiliary power supply unit 22 and the TRS wireless repeater or the plurality of power facilities 10, and periodically charges and discharges the auxiliary power Device.

The auxiliary charging / discharging device 30 is provided in plural to correspond to the TRS wireless repeater or a plurality of power supply facilities 10.

In order to realize this operation, the auxiliary charge / discharge device 30 includes a communication unit 310, a first power supply monitoring unit 320, a second power supply monitoring unit 330, an address determination unit 340, a relay unit 350 A charge / discharge control unit 360, a discharge stop unit 370, an alarm signal output unit 380, a display unit 385, and a control unit 390.

The communication unit 310 is a device for transmitting and receiving data to and from an external device (for example, the administrator terminal 40) and is connected to the administrator terminal 40 on the basis of a protocol stack (for example, an Ethernet protocol) And can exchange data with each other using a communication protocol defined in the provided program. However, in the present invention, various wired / wireless communication interfaces such as RS485, LAN interface method, wifi method, zigbee method, bluetooth method, 3G method, 4G method, LTE method, have. For example, the LAN interface includes protocols such as TCP, UDP, IP, ARP, ICMP, MAC, DHCP, PPPoE, and DNS and supports Ethernet 10/100 Mbps (Auto detection) And can support remote NMS programs over TCP / IP.

The first power monitoring unit 320 monitors the amount of power supplied from the main power supply unit 21 and transmits the detected amount of power to the controller 390.

The second power monitoring unit 330 monitors the power amount of the auxiliary power, and detects the power amount of the auxiliary power supplied from the auxiliary power supply unit 22, that is, the charging voltage, and transmits the detected amount to the controller 390 .

The address designation unit 340 designates the auxiliary power supply facility 22 as a master or a slave and may designate a plurality of auxiliary charge / discharge devices 30 as masters or slaves, respectively, and operate each group . To this end, the auxiliary charging / discharging device 30 designated as a master or a slave is connected by a serial communication method such as RS-485. Accordingly, the slave device can be expanded to a maximum of 15 slave devices.

Meanwhile, the auxiliary charging / discharging device 30 set as the master among the auxiliary charging / discharging devices 30 sequentially controls power supply to each of the auxiliary charging / discharging devices 30 set as slaves within a preset power supply amount , And can be supplied in parallel with the reduced power to the auxiliary charge / discharge device 30 set as each slave within the preset power supply amount. The auxiliary charging / discharging device 30 set as the master is configured such that when the auxiliary charging / discharging device 30 set in each slave is charged in parallel with reduced power, The charging / discharging device 30 can be charged with a predetermined amount of electric power by the other auxiliary charging / discharging device 30 in the same group.

The relay unit 350 is a switching device that supplies or cuts off power to the auxiliary power supply equipment 22. [ That is, the relay unit 350 can switch the power supply to the auxiliary power supply facility 22 under the control of the charge / discharge control unit 360.

The charge / discharge control unit 360 is a device that periodically charges or discharges the auxiliary power supply equipment 22. [ That is, the charge / discharge control unit 360 may periodically forcibly charge or discharge the auxiliary power supply facility 22 under the control of the controller 390. For this, the charging / discharging control unit 360 may forcibly turn on or off the corresponding relay connected to the auxiliary power supply facility 22.

The discharge stop unit 370 stops discharging when the auxiliary power supply unit 22 reaches the discharge stop voltage in accordance with the preset discharge stop voltage. When the charging voltage of the auxiliary power supply equipment 22 reaches the predetermined discharge neutral voltage, the discharge stop unit 370 operates the relay even if the auxiliary power supply equipment 22 is in the discharging state, . Accordingly, in the present invention, the discharge stop voltage of the auxiliary power supply facility 22 (i.e., the battery) can be set and managed according to the user's environment through the discharge stop unit 370, and the failure of the battery due to the full discharge of the battery And it is possible to prevent a situation of communication paralysis caused by power failure of the wireless communication network in advance.

The alarm signal output unit 380 outputs an alarm signal to the outside when the power amount of the auxiliary power source is equal to or less than a preset first reference voltage value. The alarm signal output unit 380 is implemented as an audio output means such as a speaker. When the power amount of the auxiliary power source does not reach the first reference voltage value preset by the manager, the alarm signal output unit 380 informs the manager .

The display unit 385 displays information on power supply amount of main power and auxiliary power, charge / discharge status information of the auxiliary power supply equipment 22, data transmitted / received through the communication unit 310, It is a device that displays for the administrator to see. More specifically, the display unit 385 displays a signal related to a current voltage state, a LAN connection state, a data transmission / reception state and information, a data communication state and information between the master and the slave, information, a charging state, a discharge state, Can be displayed. For this, the display unit 385 may be implemented as an LED indicator. That is, the display unit 385 displays a PWR (LED ON in normal operation after POWER input), LINK (when connected to LAN port or LED ON in normal operation) through a plurality of LEDs included in the LED indicator, RST (LED ON when battery discharge command is executed at remote or site, or battery discharge via DO PORT), SET (LED is ON when battery charge command is executed at remote or site, or battery is charged via DO PORT) , TXD (LED ON when communication TX signal of TRS charging / discharging device occurs), RXD (LED ON when communication RX signal is generated between TRS charging / discharging device), LINK (LED turns on when TRS charging / Lt; RTI ID = 0.0 > LEDs < / RTI > Also, the display unit 385 may display various operation states (input voltage, charge / discharge voltage, etc.) of the TRS charge / discharge apparatus. The display unit 385 uses an LCD (Liquid Crystal Display), an LED (Liquid Emitting Diode), an OLED (Organic LED), and an AMOLED (Active Matrix OLED)

Although not shown, the present auxiliary charging apparatus may further include a memory section that stores all information related to the operation state of the apparatus. The memory unit may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM (Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), PROM (Programmable Read-Only Memory), magnetic memory, magnetic disk, And an optical disc.

The controller 390 controls the operation of each component and supplies the auxiliary power to the auxiliary power supply unit 22 when the power amount of the main power is less than the second reference voltage value. In addition, the controller 390 incorporates an RTC (Real-Time Clock) function to check the event occurrence time, charge, discharge, battery operation time, and the like in real time through a NMS (Network Management System) You can view.

The manager terminal 40 is connected to the auxiliary charging / discharging device 30 through a wired / wireless communication network and receives power from the auxiliary charging / discharging device 30 and monitors the operation states of the main power and the auxiliary power. to be. 5A to 5B, the administrator terminal 40 accumulates power supply amount information and charge / discharge operation status information of the auxiliary charge / discharge device 30 as time, day, month, and year, You can map and store and manage items.

Also, the manager terminal 40 generates a control command for charging / discharging the auxiliary power source at a predetermined cycle and transmits it to the controller 390 of the auxiliary charge / discharge device 30. That is, the manager terminal 40 receives the operation state information from the auxiliary charge / discharge device 30 in real time, controls the operation of the auxiliary charge / discharge device 30 on the basis of the operation state information, And periodically transmits a charging or discharging operation command of the auxiliary charging / discharging device (30) based on the operation state information. The administrator terminal 40 may transmit a designation command to the auxiliary charge / discharge device 30 to designate a plurality of auxiliary charge / discharge devices 30 as masters or slaves to be operated for each group.

In order to implement the above-described operation, the administrator terminal 40 has an NMS program or an application installed therein. Accordingly, in the present invention, the state information of the back-up battery of the TRS wireless relay device installed in the underground power port is monitored and monitored by the administrator terminal 40 through the NMS for charging and discharging status, It becomes possible to control.

The administrator terminal 40 is not limited to a mobile communication terminal such as a smart phone but may be a PDA (Personal Digital Assistant), a HPC (Hand Personal Computer), a Web pad, a notebook, a WAP (Wireless Application Protocol) A PC, an e-Book terminal, an HHT (Hand Held Terminal), and the like.

According to the auxiliary power monitoring and control system configured as described above, the auxiliary power is periodically charged / discharged through the charge / discharge circuit for the auxiliary power as well as the monitoring function of the main power and the auxiliary power, Since the monitoring and control can be performed by the administrator terminal 40, it is possible to operate the system more efficiently by reducing the maintenance cost and wasted manpower.

It is to be understood that the present invention is not limited to the above-described embodiment, and that various modifications and changes may be made without departing from the scope of the present invention as defined in the appended claims. It will be understood by those skilled 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 by the appended claims.

10: TRS wireless repeater or multiple power plants
21: main power supply equipment 22: auxiliary power supply equipment
30: auxiliary charge / discharge device 40: manager terminal
310: communication unit 320: first power source monitoring unit
330: Second power source monitoring unit 340:
350: relay unit 360: charge / discharge control unit
370: discharge stop section 380: alarm signal output section
385: display unit 390: control unit

Claims (4)

A main power supply unit for supplying main power to a TRS wireless repeater or a plurality of power facilities and a remote monitoring and control unit for supplying auxiliary power to the TRS wireless repeater or a plurality of power facilities when the power of the main power source is low System,
An auxiliary charge / discharge device for measuring a power supply amount of the main power and auxiliary power between the auxiliary power supply facility and the TRS wireless repeater or a plurality of power facilities and periodically charging / discharging the auxiliary power; And
And an auxiliary charge / discharge device connected to the auxiliary charge / discharge device via a wired / wireless communication network to monitor the operation states of the main power and the auxiliary power by receiving power amounts of the main power and the auxiliary power from the auxiliary charging / discharging device, A manager terminal,
The auxiliary charge / discharge apparatus includes a communication unit for transmitting / receiving data to / from an external device; A first power supply monitoring unit for monitoring a power supply amount of the main power supply; A second power monitoring unit for monitoring a power amount of the auxiliary power; An address designating unit for designating the auxiliary power supply equipment as a master or a slave; A relay unit for supplying or disconnecting power to the auxiliary power supply facility; A charge / discharge control unit for periodically charging or discharging the auxiliary power supply equipment; A discharge stop section for stopping discharge when the auxiliary power supply apparatus reaches a discharge stop voltage according to a preset discharge stop voltage; An alarm signal output unit for outputting an alarm signal to the outside when the power amount of the auxiliary power source is equal to or less than a preset first reference voltage value; A display unit for displaying power amount information of the auxiliary power source; And a controller for controlling operation of each component, and supplying an auxiliary power to the auxiliary power supply when the power of the main power is less than or equal to a second reference voltage.
delete The method according to claim 1,
The auxiliary charging / discharging device may be provided in a plurality of the TRS wireless repeaters or a plurality of power facilities,
Wherein the plurality of auxiliary charging / discharging devices can be designated as masters or slaves by the address determining unit, respectively.
The method according to claim 1,
Wherein the manager terminal receives operation state information from the auxiliary charge / discharge device in real time, and controls the operation of the auxiliary charge / discharge device based on the operation state information, wherein the charge / To the auxiliary power monitoring and control system.

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