JP2016213921A - Power receiving/transforming monitoring control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power receiving/transforming monitoring control system achieving a reduction in wiring connection work and allowing a cause of malfunction to be easily determined.SOLUTION: A power receiving/transforming monitoring control system 1 comprises: a monitoring control board 8; a protection board 9; and a measurement board 10. A DIO board 11 outputs opening/closing command signals 5 and 7 to a disconnector 2 and a circuit breaker 3 by DO signals while loading state signals 4 and 6 of the disconnector 2 and the circuit breaker 3 by DI signals. The DIO board 11 transmits and receives the signals between the boards 8 and 9 via an HUB12 by a transmission method. Since the DIO board 11 only performs transmission and reception of the signals to/from all the boards 8, 9 and 10, a connection error of wiring connecting the DIO board 11, the disconnector 2 and the circuit breaker 3 is determined to occur when all the boards 8, 9 and 10 do not perform positive operation together.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a power reception / transformation monitoring control system for controlling a switch such as a disconnector or a circuit breaker.

  The power system configuration tends to increase in complexity due to an increase in the number of distributed power sources due to the recent expansion of electric power liberalization, and the amount of fluctuation in the amount of power generation and load is also increasing. For this reason, further stabilization of operation of the electric power system is desired, and further improvement in reliability is expected for the power reception and transformation monitoring control system that controls the switches such as the disconnecting switch and the circuit breaker.

  In general, the power reception / transformation monitoring control system includes a signal processing board (hereinafter also simply referred to as a board) for processing various signals such as a monitoring control board, a protection board, and a measurement board. Among them, the monitoring control panel outputs an opening / closing command signal to the disconnecting switch and the circuit breaker to turn on and off, and the protection panel outputs an opening command signal to the circuit breaker when a system fault is detected to open.

  The measuring panel measures the operation time and the number of operations based on the disconnector and circuit breaker status signals. These boards are mounted with a DI board, and the status signals are taken in by DI signals from disconnectors and circuit breakers. In addition, each board has a DO board mounted thereon, and outputs an open / close command signal for a disconnector or circuit breaker as a DO signal.

JP 2012-249387 A

  In recent years, the complexity of electric power systems has increased, and switches placed in the electric power system are often added or removed. When a switch is added or removed, the connection configuration with the switch must be changed on all panels related to the addition or removal. Therefore, it is necessary to remodel the hardware configuration of each panel in accordance with the change of the switch, which requires significant time and cost.

  Further, as the number of switches connected to the power reception / transformation monitoring control system increases, the number of contacts from the switches to each panel increases in proportion to this, and the wiring connection work to the panel becomes complicated. As a result, wiring connection errors are likely to occur. For each panel included in the substation monitoring and control system, when the information from the same switch is taken into multiple panels, the board with the wiring correctly connected and the board with the wiring incorrectly connected The behavior will be different.

  By the way, it is conceivable that the reason why the behavior of the board is different is that there is a problem not only in the connection mistake of the wiring to the board but also in the software installed on the board. Therefore, after confirming that the installed software has no problem, it took a long time to identify which panel had the wiring connection error.

  An embodiment of the present invention has been proposed to solve the above-described problem, and is a power reception and transformation monitoring control system capable of reducing wiring connection work and easily identifying the cause of a failure. The purpose is to provide.

In order to achieve the above object, a power reception and transformation monitoring and control system according to an embodiment of the present invention includes the following components (1) and (2).
(1) A signal aggregating board that takes in a signal from the switch as a DI signal through wiring connected to the switch and outputs a signal to the switch as a DO signal.
(2) A plurality of signal processing boards that transmit and receive signals to and from the signal aggregation board using a predetermined transmission method.

The block diagram which shows the whole structure of 1st Embodiment. The block diagram which shows the structure of the principal part of 1st Embodiment. The block diagram which shows the structure of 2nd Embodiment. The block diagram which shows the structure of 3rd Embodiment.

(First embodiment)
The first embodiment according to the present invention will be specifically described with reference to FIGS. 1 and 2. FIG. 1 is a block diagram showing the overall configuration of the first embodiment, and FIG. 2 is a block diagram showing the configuration of the main part of the first embodiment.

(Constitution)
As shown in FIG. 1, the power reception / transformation monitoring control system 1 is a system for controlling a disconnector 2 and a circuit breaker 3 that are switches. The power reception / transformation monitoring control system 1 is provided with a monitoring control board 8, a protection board 9, and a measurement board 10 as signal processing boards. The monitoring control panel 8 turns on and off the disconnector 2 and the circuit breaker 3, and the protection panel 9 opens the circuit breaker 3 when a system fault is detected. The measurement panel 10 measures the operation time and the number of operations of the disconnecting switch 2 and the circuit breaker 3.

  In the power reception / transformation monitoring control system 1, one DIO board 11 is connected to each of the boards 8, 9, 10 through one HUB 12, and a network is constructed by the Ethernet 13. The DIO board 11 is a signal aggregation board that aggregates through the wiring connected to the disconnector 2 and the circuit breaker 3. Each board 8, 9, 10 exchanges signals with the DIO board 11 using a predetermined transmission method, specifically TCP / IP.

  As shown in FIG. 2, the monitoring control panel 8, the protection panel 9, and the measurement panel 10 are all provided with a device state change table 17 that stores state signals of the disconnecting switch 2 and the circuit breaker 3. The monitoring control panel 8 and the protection panel 9 are provided with a device opening / closing command table 18 for storing opening / closing command signals to the disconnecting switch 2 and the circuit breaker 3.

  The DIO board 11 is provided with a common device state change table 15 and a common device open / close command table 16. Among these, the common device state change table 15 is a portion that takes in the state signal from the disconnector 2 and the breaker 3 as a DI signal. The common device switching command table 16 is a portion that outputs switching command signals for the disconnecting switch 2 and the circuit breaker 3 as DO signals.

(Signal transmission and reception)
In the power reception / transformation monitoring control system 1 having the above-described configuration, the following signals are exchanged. The DIO board 11 takes in the state signal 4 of the disconnector 2 and the state signal 6 of the breaker 3 as DI signals into the common device state change table 15 through the wiring connected to the disconnector 2 and the breaker 3.

  In the substation monitoring and control system 1, since the network connecting the boards 8, 9, 10 and the DIO board 11 is constructed by the Ethernet 13, the common device state change table 15 of the DIO board 11 includes the disconnector 2 and the disconnection. The state signals 4 and 6 fetched from the device 3 are sent to the device state change table 17 of the monitoring control panel 8, the protection panel 9 and the measurement panel 10 by a predetermined transmission method, for example, TCP / IP. The device status change table 17 reads the status signals 4 and 6, and the monitoring control board 8, the protection board 9 and the measurement board 10 perform each process based on the contents of the status signals 4 and 6.

  In addition, the device opening / closing command table 18 of the monitoring control panel 8 and the protection panel 9 is configured to send the switching command signal 5 of the disconnector 2 and the switching command signal 7 of the circuit breaker 3 to the DIO by a predetermined transmission method, for example, TCP / IP. Write to the common device open / close command table 16 of the board 11 and transmit to the DIO board 11. The DIO board 11 reflects the contents of the equipment opening / closing command table 18 received from the monitoring control board 8 and the protection board 9 in the common equipment opening / closing command table 16, and based on the contents, switches the disconnector 2 and the circuit breaker 3. Open / close command signals 5 and 7 are output as DO signals.

(Action and effect)
As described above, in the first embodiment, one DIO board 11 that is a signal aggregation board captures the status signals 4 and 6 from the disconnecting switch 2 and the circuit breaker 3 as DI signals, 6 is transmitted to each board 8, 9 and 10 by transmission. Further, the DIO board 11 receives the opening / closing command signals 5 and 7 from the boards 8, 9 and 10 by a transmission method, and the received opening / closing command signals 5 and 7 are sent to the disconnector 2 and the circuit breaker 3 by DO signals. Output.

  According to this embodiment, the DI signals taken from the disconnector 2 and the circuit breaker 3 are collected in the DIO board 11, and data of the DIO board 11, the monitoring control board 8, the protection board 9, and the measurement board 10 are collected. All the exchanges are carried out by transmission using the network constructed in the system 1. Therefore, even if the disconnector 2 or the circuit breaker 3 is added or removed, only the hardware modification of the DIO board 11 is required, and the hardware modification on the monitoring control panel 8, the protection panel 9, and the measurement panel 10 is not necessary. Economically advantageous.

  In addition, the disconnecting switch 2 and the circuit breaker 3 that are switches and the monitoring control panel 8, the protection panel 9, and the measuring panel 10 that are signal processing panels need not be connected to each other by wiring. Therefore, when the disconnector 2 or the circuit breaker 3 is added or removed, it is not necessary to change the number of contacts of the monitoring control panel 8, the protection panel 9, and the measurement panel 10, and the monitoring control panel 8, the protection panel 9 In addition, the wiring connection work to the measurement panel 10 can be greatly simplified.

  Further, in this embodiment, only the DIO board 11 transmits / receives signals to / from all the boards 8, 9, and 10. Therefore, if all the boards 8, 9, and 10 are not operating properly, the DIO board 11 The connection mistake of the wiring which connects the board | substrate 11, the disconnector 2, and the circuit breaker 3 has generate | occur | produced. In other words, if at least one of the boards 8, 9, and 10 is operating normally, no connection error has occurred in the wiring connecting the DIO board 11 to the disconnector 2 and the circuit breaker 3. become.

  Therefore, if information from the same disconnector 2 or circuit breaker 3 is taken in a plurality of boards 8, 9, and 10, the behavior may differ between one board and another board. For example, it can be seen that there is a problem with the software installed in each of the boards 8, 9 and 10. As described above, in the present embodiment, it is possible to quickly find the cause when a failure occurs in the power reception / transformation monitoring control system 1, and by performing the work for eliminating the failure efficiently, the economy is further improved. improves.

(Second Embodiment)
A second embodiment according to the present invention will be specifically described with reference to FIG. The basic configuration of the second embodiment is the same as that of the first embodiment, and the same portions are denoted by the same reference numerals and description thereof is omitted. Further, the exchange of signals is the same as in the first embodiment.

(Constitution)
The second embodiment is characterized in that the detection unit 14 is installed on the DIO board 11. The detection unit 14 receives a signal from each board 8, 9, and 10 and detects that all the boards 8, 9, and 10 are not operating normally based on this signal. The detection unit 14 is provided with a display unit 14a that displays detection results.

  As a specific display content of the display unit 14a, “all boards 8, 9, and 10 are not operating normally” is displayed as characters, images, and the like. Further, if it is detected that all the boards 8, 9, and 10 are not operating correctly, it is obvious that a wiring connection error has occurred in the present embodiment, so the display unit 14a displays the detection result. It may be reflected to display “a wiring connection error has occurred” as characters or images.

(Action and effect)
According to the second embodiment, when the detection unit 14 of the DIO board 11 detects that the normal operation is not performed on all the boards 8, 9, and 10, the operator is displayed to display this. Can immediately grasp that a wiring connection error has occurred. Thereby, the malfunction that has occurred in the power reception / transformation monitoring control system 1 can be resolved more quickly, and the reliability of the system can be further enhanced.

(Third embodiment)
A third embodiment according to the present invention will be specifically described with reference to FIG. The basic configuration of the third embodiment is the same as that of the first embodiment, and the same portions are denoted by the same reference numerals and description thereof is omitted. Further, the exchange of signals is the same as in the first embodiment.

(Constitution)
The third embodiment is characterized in that a plurality of HUBs 12 </ b> A to 12 </ b> D are loop-connected between the DIO board 11, the monitoring control board 8, the protection board 9, and the measurement board 10. That is, the HUBs 12A, 12B, and 12C are connected to the monitoring control board 8, the protection board 9, and the measurement board 10, respectively, and the HUB 12D that is connected to the DIO board 11 is connected to the HUB 12A and the HUB 12C. Also, HUBs 12A and 12C are connected to the HUB 12B.

(Action and effect)
According to the third embodiment, by connecting a plurality of HUBs 12A to 12D in a loop, even if one of the HUBs 12A to 12D fails, transmission processing is reliably performed with the remaining HUBs. be able to. For this reason, the redundancy of the system is improved and good reliability can be obtained.

(Other embodiments)
The above embodiment is presented as an example in the present specification, and is not intended to limit the scope of the invention. In other words, the present invention can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof in the same manner as included in the scope and gist of the invention.

  The type and number of signal processing boards included in the power reception / transformation monitoring control system, the speed during signal processing, and the like can be changed as appropriate. In addition, the type and number of switches connected to the power reception / transformation monitoring control system can be selected as appropriate.

  Furthermore, if any simple logic processing such as AND, OR, and NOT is performed using a common signal in any of the monitoring control panel, the protection panel, the measurement panel, and the like, it is previously stored in the DIO board. These logic processes may be performed, and then the logic-processed signal may be sent to each board by transmission.

  For example, it is known that all boards use the AND signal of 52R and 89R. In this case, a signal obtained by ANDing 52R and 89R on the DIO board is output to all boards. According to such an embodiment, it is not necessary to transmit 52R and 89R in parallel from the DIO board to all the boards, and the AND processing can be omitted in each board, and the processing load can be reduced.

  In addition, when logic processing is performed on each board, if a board does not operate, there may be a problem with the software installed on the board. However, in the above embodiment, the logic processing is performed on the DIO board and the logic processing on each board is not required, so that the software can be eliminated from the cause of the malfunction of the board. Therefore, even if a malfunction occurs on any of the panels, the cause of the problem can be easily identified. As a result, the time and cost for investigating the cause can be reduced, which is economically advantageous.

DESCRIPTION OF SYMBOLS 1 ... Power-receiving-transformation monitoring control system 2 ... Disconnector 3 ... Circuit breaker 4 ... Disconnector state signal 5 ... Disconnector open / close command signal 6 ... Breaker open / close command signal 7 ... Breaker open / close command signal 8 ... Monitoring control panel 9 ... Protection board 10 ... Measurement board 11 ... DIO board 12, 12A-12D ... HUB
DESCRIPTION OF SYMBOLS 13 ... Ethernet 14 ... Detection part 14a ... Display part 15 ... Common apparatus state change table 16 ... Common apparatus opening / closing command table 17 ... Equipment state change table 18 ... Equipment opening / closing command table

Claims (5)

A signal aggregating board that captures a signal from the switch as a DI signal through a wiring connected to the switch, and outputs a signal to the switch as a DO signal;
A power reception / transformation monitoring control system comprising: a plurality of signal processing boards that transmit and receive signals to and from the signal aggregation board by a predetermined transmission method.   The power reception / transformation monitoring control system according to claim 1, further comprising a detection unit configured to detect that all the signal processing boards are not operating normally based on a signal from the signal processing board.   The power receiving / transforming monitoring control system according to claim 1 or 2, wherein one or a plurality of HUBs are connected between the signal aggregation board and the signal processing board.   The substation monitoring and control system according to claim 3, wherein a plurality of HUBs are connected in a loop. The switch includes a disconnector and a circuit breaker,
The signal processing panel includes a monitoring control panel for turning on and off the disconnector and circuit breaker, a protection panel for opening the circuit breaker when a system fault is detected, and the operating time and number of operations of the disconnector and circuit breaker. The power receiving / transforming monitoring control system according to any one of claims 1 to 4, further comprising a measuring panel for measuring.

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