JP2022099407A - Substation controller and substation control method - Google Patents

Abstract

To provide a substation controller capable of executing appropriate operations in a substation with a configuration of executing activation at emergency from a user.SOLUTION: A substation controller, provided for a substation in a power supply system including a user, a substation and a control station, is configured to switch a breaker, to an open sate, for switching a connection state of the substation and a distribution line for emergency to an a breaker to a closed state and the open state and to notify the user of the open state of the breaker when an emergency start signal transmitted from the user performing power supply for emergency using a distribution line for emergency in the case of emergency is received, and when an emergency start interruption signal transmitted from the user who is notified of an open state of the breaker is received, an interlock prevents a disconnector connected with the breaker from being input.SELECTED DRAWING: Figure 1

Description

The present invention relates to a substation control device and a substation control method.

A power supply system that supplies the power generated at a power plant to consumers (consumers) such as buildings is known.
Specifically, the electric power generated at the power plant is supplied to the primary transmission line. The electric power transmitted by the primary transmission line is stepped down at the transmission substation and supplied to the secondary transmission line. The electric power transmitted by the secondary transmission line is stepped down at the distribution substation and supplied to the distribution line. Then, the electric power supplied to the distribution line is distributed to the consumer via the distribution line.

In such a power supply system, a situation may occur in which power is not supplied to the consumer due to a power failure or the like in the power system for supplying power. For this reason, in order to supply electric power to consumers even in the event of a power outage or the like, an emergency power supply unit is provided.

For example, when a shortage of power supply occurs due to an abnormality or accident in the regular power supply equipment, a technique for supplementing the power supply amount with the emergency power supply equipment has been considered.
For example, a technique has been considered in which a system different from the power system of an electric power company is provided and power can be supplied by a plurality of systems.

The power supply system described in Patent Document 1 discloses a technique capable of exchanging power among a plurality of consumers in an emergency such as a power outage (see Patent Document 1). Patent Document 1 discloses an operation performed at the time of a power failure and an operation performed at the time of power recovery in the power supply system.

Japanese Patent No. 6520773

However, in the past, the operation in the substation has not been examined in response to the configuration in which the customer activates the power in an emergency.

For example, conventionally, a device and a method for opening or locking a circuit breaker and a disconnector of a substation when the power supply by the emergency power supply unit is activated have not been established.
For example, conventionally, a device or method for transmitting / receiving information between a substation and a consumer or between a substation and a control station when power supply by an emergency power supply unit is activated has been used. It was not established.

The present invention has been made in consideration of such circumstances, and is a substation control device and a substation control method capable of performing appropriate operation in a substation with respect to a configuration in which an emergency is activated by a consumer. The challenge is to provide.

As an example of the configuration, a substation control device installed in the substation in a power supply system including a consumer, a substation, and a control station, and an emergency power supply is performed by using an emergency distribution line in an emergency. When an emergency start signal transmitted from a consumer is received, the circuit breaker that switches the connection state between the substation and the emergency distribution line between the on state and the open state is switched to the open state, and the circuit breaker is cut off. When the consumer is notified of the open state of the circuit breaker and the emergency activation midway signal transmitted from the customer notified of the open state of the circuit breaker is received, the circuit breaker connected to the circuit breaker by interlock is received. It is a substation control device that prevents the power from being turned on.

As an example of the configuration, it is a substation control method performed in a substation control device provided in the substation in a power supply system including a consumer, a substation, and a control station, and an emergency distribution line is used in an emergency. A circuit breaker that switches the connection state between the substation and the emergency distribution line between the on state and the open state when an emergency start signal transmitted from a consumer who supplies emergency power is received. When switching to the open state, notifying the consumer of the open state of the circuit breaker, and receiving an emergency activation midway signal transmitted from the customer notified of the open state of the circuit breaker, interlocking is performed. This is a substation control method for preventing a circuit breaker connected to the circuit breaker from being turned on.

According to the substation control device and the substation control method according to the present invention, it is possible to perform an appropriate operation in the substation with respect to a configuration in which the consumer activates the substation in an emergency.

It is a figure which shows the schematic structure of the electric power supply system which concerns on one Embodiment of this invention. It is a figure which shows the schematic structure of the substation control device in the substation which concerns on one Embodiment of this invention. It is a figure which shows an example of the schematic operation performed in the consumer and the substation control apparatus which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Power supply system]
FIG. 1 is a diagram showing a schematic configuration of a power supply system 1 according to an embodiment of the present invention.
The power supply system 1 includes substations 11 to 12, consumers 21 to 23, a control station 31, an emergency generator 51, and distribution lines 111 and 141.
Here, in the present embodiment, the power supply system 1 will be described as a configuration including the consumers 21 to 23, but the consumers 21 to 23 are not included in the power supply system 1 and are separate from the power supply system 1. It may be regarded as a body.

Here, the substations 11 to 12 are distribution substations.
In the present embodiment, a power plant, a transmission substation, a primary transmission line for supplying power from the power plant to the transmission substation, and two for supplying power from the transmission substation to the distribution substation. Illustrations and explanations of the next transmission line will be omitted.
Further, in the present embodiment, the substation 11 and the substation 12 are shown separately, but the substation 11 and the substation 12 may be integrated.

The substation 11 and the consumers 21 to 23 are connected to each other via a distribution line 111.
In the present embodiment, in order to simplify the explanation, the case where the substation 12 and the consumers 21 to 23 are connected to each other via the distribution line 141 is taken as an example. In general, in a normal system, each consumer 21 to 23 may not be connected to the same distribution line, and each consumer 21 to 23 may have a different voltage class or substation.
In the present embodiment, a system for supplying electric power from the substation 12 to the consumers 21 to 23 via the distribution line 141 will be referred to as a first electric power system.
In the present embodiment, a system for supplying electric power from the substation 11 to the consumers 21 to 23 via the distribution line 111 will be referred to as a second electric power system. In this embodiment, the distribution line 111 in the second power system is used as a standby power line in an emergency.
The substation 11 includes a circuit breaker 212 and a disconnector 213.

In the present embodiment, each of the consumers 21 to 23 is a building, but may be another building or the like.
Each of the consumers 21 to 23 is equipped with a power receiving facility or the like.
In the present embodiment, the consumers 21 to 23 are subscribed to a contract that enables power to be supplied using the distribution line 111, which is a standby power line, in an emergency. The service of such a contract may be, for example, a service of Premium Grid®. Premium Grid® may be referred to as PG.
The consumer 21 is equipped with an emergency power generator 51.
Here, the emergency generator 51 is an example of an emergency power supply unit for supplying electric power in an emergency. As the emergency power supply unit, various power supply devices may be used.

The consumer 21 and the substation 11 are connected to each other via a communication line 161.
In the present embodiment, the communication line 161 is a dedicated line, but may be a general line such as the Internet.
Further, in the example of FIG. 1, in order to simplify the illustration, the communication line 161 is shown by one line, but the communication line 161 may include two or more lines.

The control station 31 and the substation 11 are connected via a communication line 171.
The control station 31 and the substation 12 are connected via a communication line 172.
The control station 31 controls each substation 11 to 12.
The control station 31 may control another substation.
In the present embodiment, the communication lines 171 to 172 are dedicated lines, but may be general lines such as the Internet.
Further, in the example of FIG. 1, in order to simplify the illustration, each communication line 171 to 172 is shown by one line, but each communication line 171 to 172 may include two or more lines.

At each substation 11-12, each consumer 21-23, and control station 31, each manager exists. Each administrator can contact each other by telephone or e-mail. In addition, each administrator can manually operate switches and the like at each location.
The operation manually performed in the present embodiment may be automatically performed using, for example, a computer.

[Outline of operation in power supply system]
In this embodiment, in order to simplify the explanation, it is assumed that the power supply from the substations 11 to 12 to the consumers 21 to 23 is stopped in an emergency when a power outage or the like occurs. Power outages and the like can occur, for example, due to disasters or accidents.
In the present embodiment, a case where the consumer 21 is activated to notify that an emergency has occurred will be described.
If the substation 12 is out of power but the substation 11 is not out of power and is operating normally, power is supplied to each consumer 21 to 23 using the distribution line 111, which is a standby power line. To.

First, a normal time in which a power failure or the like has not occurred will be described.
Under normal conditions, power is supplied from the substation 12 to each consumer 21 to 23 via the distribution line 141.
Each of the consumers 21 to 23 switches the switch or the like so as to use the electric power supplied through the distribution line 141.
At this time, the emergency generator 51 has not been started.

In the event of an emergency such as a power failure, the substation 11 opens the connection with the distribution line 111 by the circuit breaker 212 and the disconnector 213.
Each consumer 21 to 23 switches a switch or the like so as to be connected to the distribution line 111.
At this time, the emergency generator 51 is activated, and the electric power supplied from the emergency generator 51 is used by the consumer 21 and is used by the other consumers 22 and 23 via the distribution line 111. Will be supplied.
The other consumers 22 and 23 use the electric power supplied through the distribution line 111.

When the power is restored after a power failure or the like, it is controlled to return to the same state as in the normal state.

As for the operation of switching the switch or the like performed by each consumer 21 to 23 at the time of power failure and power recovery, any operation may be performed, and as an example, a part of the operation described in Patent Document 1. May be applied.

[Configuration and operation according to emergency activation]
FIG. 2 is a diagram showing a schematic configuration of a substation control device 211 in a substation 11 according to an embodiment of the present invention.
FIG. 2 shows a configuration example of the substation 11, the consumer 21, and the control station 31 regarding the activation in an emergency.
In this embodiment, the configuration and operation related to the activation in an emergency will be mainly described. For other configurations and operations, any configuration and operation may be used.

In the present embodiment, the information communication between the consumer 21 and the substation 11 will be described as being performed using the communication line 161. However, the information communication between the consumer 21 and the substation 11 is arbitrary. It may be done using wiring.
In the present embodiment, the information communication between the control station 31 and the substation 11 is described as being performed using the communication line 171. However, the information communication between the control station 31 and the substation 11 is arbitrary. It may be done using wiring.

The substation 11 includes a substation control device 211, a circuit breaker 212, a disconnector 213, a protection relay device 214, and an alarm output unit 215.
In this embodiment, the circuit breaker 212, the disconnector 213, the protection relay device 214, and the alarm output unit 215 are provided in the substation 11, but some of them or A configuration in which all of them are provided separately from the substation 11 may be used.

The substation control device 211 includes a monitoring unit 311, an opening command unit 312, DC chain terminals 313 to 314, an emergency activation midway information transfer unit 321, an on / off information transfer unit 331, and a protection relay operation information transfer. A unit 341 and an alarm generation unit 351 are provided.
The circuit breaker 212 includes a communication unit 411.
The disconnector 213 includes a communication unit 421.
The protection relay device 214 includes a communication unit 431.

The consumer 21 includes a transmission unit 511 and a reception unit 512.
The control station 31 includes a receiving unit 611.

The operation performed in an emergency in the power supply system 1 will be described.
In the event of an emergency such as a power outage, in the consumer 21, the transmission unit 511 transmits a predetermined signal for emergency activation (referred to as an emergency start signal in the present embodiment) to the substation control device 211. do.
Here, the consumer may manually issue an emergency start signal by the administrator, or may automatically issue an emergency start signal based on a predetermined condition.

The substation control device 211 will be described.
When the monitoring unit 311 receives the emergency start signal transmitted from the consumer 21, the monitoring unit 311 issues an opening command to the opening command unit 312.
Here, the monitoring unit 311 monitors the non-responsiveness (non-operation) of the circuit breaker 212 and the disconnector 213 and the contact abnormality. When it is determined by such monitoring that these defects have occurred, the monitoring unit 311 controls the circuit breaker 212 so as not to open it. The control may be, for example, a control that does not receive the emergency start signal transmitted from the consumer 21, or even if the emergency start signal transmitted from the consumer 21 is received, the circuit breaker 212 may be used. The control may be such that the signal for opening is not transmitted.

When the opening command unit 312 receives the opening command issued from the monitoring unit 311, it transmits an opening command signal to the circuit breaker 212 and also transmits an opening command signal to the disconnector 213.
In the present embodiment, the timing of opening the disconnector 213 is adjusted so that the disconnector 213 is opened after the circuit breaker 212 is opened.
For example, in the substation control device 211, the opening circuit of the disconnector 213 is configured to give priority to the opening of the disconnector 212, and the output for opening the disconnector 213 after the opening of the circuit breaker 212 is confirmed is output. It is configured to be activated.
If it is realized that the disconnector 213 is opened after the circuit breaker 212 is opened, the substation control device 211 does not have to monitor the closing and opening states of the circuit breaker 212, or The state of closing and opening of the disconnector 212 may be monitored.
In order to realize that the disconnector 213 is opened after the circuit breaker 212 is opened, for example, a delay circuit is provided in the opening circuit of the disconnector 213, and the disconnector 213 is opened by the delay circuit. Signal may be delayed.

A DC chain terminal 313 is provided in the path of the open circuit between the open command unit 312 and the circuit breaker 212.
Further, a DC chain terminal 314 is provided in the path of the opening circuit between the opening command unit 312 and the disconnector 213.
The DC chain terminals 313 and 314 are installed to lock (prevent) unnecessary open signals at the time of inspection, construction, or equipment failure of the substation 11.
The DC chain terminals 313 and 314 have, for example, a hook shape and are manually inserted into or removed from the path by the administrator.
Normally, the DC chain terminals 313 and 314 are in a state of being inserted into the path.

In the circuit breaker 212, when the communication unit 411 receives the opening command signal transmitted from the opening command unit 312, the circuit breaker 212 is opened. In this case, the communication unit 411 transmits information indicating that the circuit breaker 212 is in the open state to the input / release information transfer unit 331.
Further, the communication unit 411 may transmit information indicating that the circuit breaker 212 is turned on to the input / release information transfer unit 331.

In the disconnector 213, when the communication unit 421 receives the open command signal transmitted from the open command unit 312, the disconnector 213 is opened. In this case, the communication unit 421 transmits information indicating that the disconnector 213 is in the open state to the input / release information transfer unit 331.
Further, the communication unit 421 may transmit information indicating that the disconnector 213 is turned on to the input / release information transfer unit 331.

The on / off information transfer unit 331 receives the information transmitted from the communication unit 411 of the circuit breaker 212 and the information transmitted from the communication unit 421 of the disconnector 213.
Then, the input / release information transfer unit 331 transmits these information to the reception unit 512 of the consumer 21 and the reception unit 611 of the control station 31. In the present embodiment, the input / release information transfer unit 331 transfers (transmits) these information by contact amplification. Generally, in contact amplification, the number of contacts is increased and the same information is broadcast.
The on / off information transfer unit 331 amplifies and transfers the on / off information of the circuit breaker 212 and the disconnector 213.
In the present embodiment, the input / open information transfer unit 331 can amplify the contact and open states of the circuit breaker 212 and the disconnector 213, and simultaneously transmit the information to the consumer 21 and the control center 31.

In the consumer 21, the receiving unit 512 receives the information transmitted from the input / release information transfer unit 331. As a result, the consumer 21 can grasp whether the circuit breaker 212 is turned on or open, and whether the disconnector 213 is turned on or open. It is possible to grasp whether it is in the state of being disconnected.

At the control station 31, the receiving unit 611 receives the information transmitted from the input / release information transfer unit 331. As a result, the control station 31 can grasp whether the circuit breaker 212 is turned on or open, and whether the disconnector 213 is turned on or open. It is possible to grasp whether it is in the state of being disconnected.

In the consumer 21, the transmission unit 511 makes a predetermined signal (referred to as an emergency activation midway signal in the embodiment) for notifying the emergency activation midway when the emergency operation is normally realized. It is transmitted to the information transfer unit 321 during the time activation.
Here, the consumer 21 may manually issue an emergency activation midway signal by the administrator, or may automatically emit an emergency activation midway signal based on a predetermined condition. In the present embodiment, when the consumer 21 determines that the circuit breaker 212 and the disconnector 213 have been opened based on the information transmitted from the input / release information transfer unit 331, the consumer 21 automatically activates the emergency mode. Emit a signal.

When the emergency activation midway information transfer unit 321 receives the emergency activation midway signal transmitted from the transmission unit 511 of the consumer 21, the information transfer unit 611 of the control center 31 indicates that the emergency activation is in progress. Send to. In the present embodiment, the information transfer unit 321 during emergency activation transfers (transmits) the information by contact amplification.
The information transfer unit 321 during the emergency activation transfers information indicating that the emergency activation is in progress by contact amplification.
In the present embodiment, the emergency activation midway information transfer unit 321 can contact-amplify the emergency activation midway signal from the consumer 21 and transmit the information to the control center 31.

Here, in the present embodiment, the substation control device 211 is an interlock circuit in the path of the disconnector circuit of the disconnector 213 so that the disconnector 213 is not inserted when the consumer 21 is in the middle of activating the emergency. Is provided.
In the present embodiment, a circuit is configured in which the disconnector 213 is not turned on when the emergency activation midway signal is input from the consumer 21 to the emergency activation midway information transfer unit 321.

In the consumer 21, after the interlock is performed, the emergency generator 51 is started, the electric power generated by the emergency generator 51 is supplied to the consumer 21, and the distribution line 111 is connected. It is supplied to consumers 22 and 23 via.

At the control station 31, the receiving unit 611 receives the information transmitted from the information transfer unit 321 during the emergency activation. As a result, the control station 31 can know that it is in the process of being activated in an emergency.

The protection relay device 214 includes a protection relay for the circuit breaker 212. The protection relay device 214 transmits information indicating the operation of the protection relay to the protection relay operation information transfer unit 341.
The protection relay operation information transfer unit 341 transmits the information transmitted from the protection relay device 214 to the reception unit 512 of the consumer 21 and the reception unit 611 of the control station 31. In the present embodiment, the protection relay operation information transfer unit 341 transfers (transmits) the information by contact amplification.
The protection relay operation information transfer unit 341 transfers the information indicating the operation of the protection relay by contact amplification.
In the present embodiment, the protection relay operation information transfer unit 341 can amplify the contacts during the protection relay operation of the circuit breaker 212 and simultaneously transmit the information to the consumer 21 and the control center 31.

In the consumer 21, the receiving unit 512 receives the information transmitted from the protection relay operation information transfer unit 341. As a result, the consumer 21 can grasp the information on the operation of the protection relay of the substation 11.

At the control station 31, the receiving unit 611 receives the information transmitted from the protection relay operation information transfer unit 341. As a result, the control station 31 can grasp the operation information of the protection relay of the substation 11.

When the alarm generation unit 351 detects that a predetermined abnormality has occurred, it generates an alarm signal and transmits the alarm signal to the alarm output unit 215.
When the alarm output unit 215 receives the alarm signal transmitted from the alarm generation unit 351, the alarm output unit 215 issues a predetermined alarm.
The alarm may be an alarm of any type, for example, an alarm by visual display, or an alarm by sound. As a mode of visual display, a mode in which a transparent window is provided and information indicating an alarm is displayed inside the window may be used. The window may be a faulty window indicating a fault. The visual display mode may be a mode in which information is displayed on the display screen, or a mode in which an alarm is notified by the color or shape of a predetermined object other than the screen. As an example, in the event of an abnormality, a mode in which a red target indicating an abnormality appears inside a transparent failure window may be used.
In this embodiment, such alarm information is clearly shown to the administrator.

Here, the predetermined abnormality that is the target for issuing an alarm may be predetermined.
The predetermined abnormality may be a non-responsiveness (non-operation) of the circuit breaker 212 and the disconnector 213 and a contact abnormality. In this case, the alarm generation unit 351 detects that a predetermined abnormality has occurred in response to the determination by the monitoring unit 311 that the circuit breaker 212 and the disconnector 213 have not responded (non-operated) or a contact abnormality has occurred. Then, an alarm signal is generated, and the alarm signal is transmitted to the alarm output unit 215.

[Emergency start signal and emergency activation signal]
In the present embodiment, the emergency start signal and the emergency activation midway signal are provided as separate signals. These signals will be described.

The emergency start signal will be described.
In the present embodiment, when the emergency activation is performed, the circuit breaker 212 of the equipment of the substation 11 is opened by the emergency start signal from the consumer 21. Seen from the substation 11, when the circuit breaker 212 was opened, the circuit breaker 212 was opened naturally, or it was opened due to an accident, but no display was displayed, or an emergency start signal. It is not possible to instantly determine whether or not the circuit breaker is open.
Therefore, in the present embodiment, when the emergency start signal transmitted from the consumer 21 is received at the substation 11, the circuit breaker 212 is immediately opened, and the information indicating the reason for the opening and the location in charge of operation are provided. It has a circuit configuration that displays information indicating. These pieces of information may be output by, for example, the alarm output unit 215, or may be output by another method.

The emergency start signal may be, for example, a pulse signal. In this case, when the circuit breaker 212 is in the open state via the monitoring unit 311 and the opening command unit 312 by the emergency start signal (for example, the first pulse signal) transmitted from the consumer 21, the demand is again received. Even if the emergency start signal (for example, the second and subsequent pulse signals) is transmitted from the house 21, the circuit breaker 212 remains in the open state.

The signal during emergency activation will be described.
In the present embodiment, during the activation in an emergency, the electric power is supplied between the consumers 21 to 23 by using the equipment such as the distribution line 111 (for example, the equipment of the electric power company). At this time, in order to disconnect the equipment used for such power supply from the original system (for example, the system of the electric power company), the circuit breaker 212 and the disconnector 213 are opened.
Here, when the circuit breaker 212 and the disconnector 213 are open, the observer (for example, the employee in charge of the electric power company) may generally recognize that the corresponding line is in a non-charged state. many.
However, since the electric power is supplied between the consumers 21 to 23 during the activation in an emergency, the recognition that the equipment used for the electric power supply is non-chargeable is misrecognized. Therefore, in the present embodiment, in order to prevent electric shock due to such erroneous recognition, information indicating that the equipment is being charged is provided to the site and the place in charge of operation in response to the signal during emergency activation. Display is done. In the present embodiment, the substation 11 has a circuit configuration for displaying such information when an emergency activation midway signal transmitted from the consumer 21 is received. These pieces of information may be output by, for example, the alarm output unit 215, or may be output by another method.
In particular, such an indication is important when the situation in which the emergency is triggered is a very tense situation such as a wide-area power outage occurring due to a large-scale disaster.

The emergency activation midway signal may be, for example, a signal that can be switched on and off. As an example, when the emergency activation midway signal is on, it indicates that the emergency activation is in progress, and when the emergency activation midway signal is off, it indicates that the emergency activation is not in progress.
The emergency activation midway signal is a signal for notifying the substation control device 211 that the power supply state in an emergency has been prepared and for maintaining the open state of the circuit breaker 212 so that the circuit breaker 212 is not turned on. be.

Here, the advantage of using the emergency start signal and the emergency activation midway signal as different signals will be described.
In the present embodiment, it is necessary to disconnect the equipment used for supplying electric power in an emergency from the original system (for example, the system of an electric power company) during the activation of an emergency.
However, when the emergency activation occurs, the circuit breaker 212 may fail to open and may not be normally transitioned to the emergency activation state (the state in which the power is supplied by the emergency generator 51). Sex is also possible.
In addition, since it is possible that various conditions may be used as conditions for activating an emergency for each consumer 21, the emergency is being activated before such conditions are properly created. There is a possibility that the state will not be transferred normally.

In this way, it is conceivable that some preparations for the activated state in an emergency may not be made, and the state may not be normally transitioned to the activated state in an emergency.
In this case, if it is considered that the emergency activation signal is not used and the emergency activation signal is used alone to shift to the emergency activation state, the consumer 21 is in a power failure. However, in the substation control device 211 or the control station 31, it is misunderstood that the consumer 21 is in the process of being activated and the power is being supplied in an emergency, and it is not necessary to restore the normal power supply. there is a possibility. At this time, the consumer 21 continues to be in a state of being out of power.

That is, if the emergency start signal also serves as an emergency activation midway signal, such a problem may occur.
Therefore, in the present embodiment, an emergency activation signal is provided as a signal for activating in an emergency, and an emergency activation intermediate signal is provided as a signal indicating that the emergency activation is in progress. The emergency start signal starts preparations for emergency activation, and when the emergency activation is in progress, the emergency activation signal notifies that the current state is the emergency activation state. do.

FIG. 3 is a diagram showing an example of a schematic operation performed by the consumer 21 and the substation control device 211 according to the embodiment of the present invention.
In the example of FIG. 3, the processes T1 to T3 performed by the consumer 21, the processes T11 to T13 performed by the substation control device 211, and the communication process performed between the consumer 21 and the substation control device 211. T21 to T23 are shown.
It should be noted that the example of FIG. 3 shows an example of the operation of the consumer 21 from the activation in an emergency to the activation in an emergency.

In the consumer 21, a situation such as a power outage that needs to be activated in an emergency occurs (process T1).
In response to this, the consumer 21 transmits an emergency start signal to the substation control device 211 (process T21).

The substation control device 211 receives the emergency start signal.
The substation control device 211 controls to open the circuit breaker 212 (process T11).
The substation control device 211 transmits information indicating the open state of the circuit breaker 212 to the consumer 21 (process T22).
The substation control device 211 controls to open the disconnector 213 (process T12).
The substation control device 211 transmits information indicating the open state of the disconnector 213 to the consumer 21 (process T23).

The consumer 21 receives the information.
In response to this, the consumer 21 grasps that the activation is in progress in an emergency (process T2).
In response to this, the consumer 21 transmits an emergency activation midway signal to the substation control device 211 (process T24).

The substation control device 211 receives the emergency activation midway signal.
In response to this, the substation control device 211 interlocks the disconnector 213.
In this embodiment, the interlock is not performed from the generation of the emergency start signal to the generation of the emergency activation intermediate signal, but the generation of the emergency activation signal to the generation of the emergency activation intermediate signal are performed almost at the same time. ..

At the consumer 21, the emergency generator 51 is activated (process T3).
Then, the consumer 21 is supplied with the electric power generated by the emergency generator 51.

Here, in the example of FIG. 3, the case where the substation control device 211 performs the process of transmitting the information indicating the open state of the disconnector 213 to the consumer 21 (process T23) is shown, but as another example, it is shown. This process may not be performed.
In this case, the communication unit 421 of the disconnector 213 may not have a function of transmitting the state information to the input / release information transfer unit 331.
Further, in this case, the input / release information transfer unit 331 receives the information transmitted from the communication unit 411 of the circuit breaker 212, and transmits the information to the reception unit 512 of the consumer 21 and the reception unit 611 of the control center 31. do.
As described above, the state information of the circuit breaker 212 and the state information of the disconnector 213 do not necessarily have to be used as a set, and instead of the set, only the state information of the circuit breaker 212 is used. -The same processing as described with reference to FIG. 3 may be performed.
Further, even when both the state information of the circuit breaker 212 and the state information of the disconnector 213 are used, for example, even if it is confirmed that the circuit breaker 212 is in the process of being activated based only on the state information of the circuit breaker 212. good. That is, the state information of the disconnector 213 may or may not be used as an auxiliary to the state information of the circuit breaker 212.

[About the above embodiments]
As described above, in the power supply system 1 according to the present embodiment, the substation control device 211 is a circuit that opens the circuit breaker 212 and the disconnector 213 when the emergency start signal transmitted from the consumer 21 is received. To prepare for.

In the power supply system 1 according to the present embodiment, the substation control device 211 can perform an appropriate operation at the substation 11 with respect to a configuration in which the consumer 21 activates the power supply system in an emergency.
For example, in the present embodiment, it is possible to control to open or lock the circuit breaker 212 and the disconnector 213 of the substation 11 when the power supply by the emergency power supply unit is activated.
For example, in the present embodiment, when the power supply by the emergency power supply unit is activated, information is transmitted between the substation 11 and the consumer 21 or between the substation 11 and the control station 31. You can send and receive.

As described above, in the present embodiment, the method of controlling the opening of the circuit breaker 212 and the disconnector 213 according to the configuration in which the consumer 21 activates in an emergency, and the substation 11 and the consumer 21 A method of transmitting and receiving information between the substation 11 and the substation 11 and the control station 31 has been established. As a result, the substation 11 can respond to the configuration in which the consumer 21 activates in an emergency.

Here, in the example of FIG. 1, in the power supply system 1, one substation 11 is provided with the substation control device 211, but there are two or more substations equipped with the substation control device. You may.
Further, in the example of FIG. 1, in the power supply system 1, one consumer 21 is provided with an emergency power generation unit (in the example of FIG. 1, an emergency power generator 51). There may be two or more consumers equipped with an emergency power generation unit.
Further, in the example of FIG. 1, in the power supply system 1, the case where the emergency power supply is performed by the three consumers 21 to 23 is shown, but the number of consumers to which the emergency power supply is performed is shown. May be arbitrary.

[Configuration example]
As a configuration example, a power supply including a consumer (customer 21 in the example of FIG. 1), a substation (substation 11 in the example of FIG. 1), and a control station (control station 31 in the example of FIG. 1). The substation control device (substation control device 211 in the example of FIG. 2) provided in the substation in the system (power supply system 1 in the example of FIG. 1) has the following configuration.
When the substation control device receives an emergency start signal transmitted from a consumer who supplies power for an emergency using an emergency distribution line (distribution line 111 in the example of FIG. 1) in an emergency. , The circuit breaker (breaker 212 in the example of FIG. 2) that switches the connection state between the substation and the emergency distribution line between the turned-on state and the open state is switched to the open state.
The substation controller notifies the consumer of the open state of the circuit breaker.
The substation control device is a disconnector that connects to the circuit breaker by interlock when it receives an emergency activation midway signal transmitted from a consumer who has been notified of the open state of the circuit breaker (in the example of FIG. 2, the disconnector). 213) is prevented from being input.

As a configuration example, in the substation control device, the open state of the circuit breaker is notified to the control station.
As an example of the configuration, in the substation control device, the control station is notified that an emergency is in the process of being activated.
As an example of the configuration, in the substation control device, after switching the circuit breaker to the open state, the disconnector is switched to the open state, and the consumer is notified of the open state of the circuit breaker and the disconnector.
As a configuration example, in the substation control device, the open state of the circuit breaker and the disconnector is notified to the control station.
As a configuration example, in the substation control device, the operation of the protection relay of the circuit breaker is notified to the consumer and the control station.
As a configuration example, an emergency alarm is generated in a substation control device.

Here, a substation control method or the like performed in the substation control device may be provided.
As a configuration example, it is a substation control method performed in a substation control device provided in a substation in a power supply system including a consumer, a substation, and a control station, and performs the following processing.
The substation control method is to connect the substation and the emergency distribution line when an emergency start signal transmitted from a consumer who supplies power for the emergency using the emergency distribution line is received. Switching the connection state between the on state and the open state Switch the circuit breaker to the open state.
The substation control method notifies the consumer of the open state of the circuit breaker.
The substation control method prevents the disconnector connected to the circuit breaker from being turned on by the interlock when the emergency activation midway signal transmitted from the consumer notified of the open state of the circuit breaker is received.

Here, a program for realizing an arbitrary function in the substation control device 211 or the like according to the above-described embodiment is recorded (stored) on a computer-readable recording medium, and the program recorded on this recording medium. May be processed by having the computer system read and execute.
The term "computer system" as used herein may include hardware such as an operating system (OS: Operating System) or peripheral devices.
The "computer-readable recording medium" includes a flexible disk, a photomagnetic disk, a ROM (Read Only Memory), a writable non-volatile memory such as a flash memory, and a portable medium such as a DVD (Digital Versaille Disc). A storage device such as a hard disk built into a computer system.
The computer-readable recording medium is, for example, a non-temporary recording medium.

Further, the "computer-readable recording medium" is a volatile memory inside a computer system that serves as a server or client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line (for example, DRAM (for example, DRAM). It also includes those that hold the program for a certain period of time, such as Dynamic Random Access Memory)).
Further, the above program may be transmitted from a computer system in which this program is stored in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting a program means a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
Further, the above program may be for realizing a part of the above-mentioned functions. Further, the above program may be a so-called difference file (difference program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

The functions of arbitrary components in the substation control device 211 and the like described above may be realized by a processor. For example, each process in the present embodiment may be realized by a processor that operates based on information such as a program and a computer-readable recording medium that stores information such as a program. Here, in the processor, for example, the functions of each part may be realized by individual hardware, or the functions of each part may be realized by integrated hardware. For example, the processor may include hardware, which may include at least one of a circuit that processes a digital signal and a circuit that processes an analog signal. For example, the processor may be configured with one or more circuit devices mounted on a circuit board, or one or both of one or more circuit elements. An IC (Integrated Circuit) or the like may be used as the circuit device, and a resistor or a capacitor may be used as the circuit element.

Here, the processor may be, for example, a CPU. However, the processor is not limited to the CPU, and various processors such as GPU (Graphics Processing Unit) or DSP (Digital Signal Processor) may be used. Further, the processor may be, for example, a hardware circuit based on an ASIC (Application Specific Integrated Circuit). Further, the processor may be composed of, for example, a plurality of CPUs, or may be composed of a hardware circuit by a plurality of ASICs. Further, the processor may be composed of, for example, a combination of a plurality of CPUs and a hardware circuit by a plurality of ASICs. Further, the processor may include, for example, one or more of an amplifier circuit or a filter circuit for processing an analog signal.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment and includes design changes and the like within a range not deviating from the gist of the present invention.

1 ... Power supply system, 11, 12 ... Substation, 21-23 ... Consumer, 31 ... Control station, 51 ... Emergency generator, 111, 141 ... Distribution line, 161, 171-172 ... Communication line, 211 Substation control device, 212 ... circuit breaker, 213 ... breaker, 214 ... protection relay device, 215 ... alarm output unit, 311 ... monitoring unit, 312 ... open command unit, 313 to 314 ... DC chain terminal, 321 ... Emergency activation midway information transfer unit, 331 ... input / release information transfer unit, 341 ... protection relay operation information transfer unit, 351 ... alarm generation unit, 411, 421, 431 ... communication unit, 511 ... transmission unit, 512, 611 ... reception Department

Claims (8)

A substation control device provided in the substation in a power supply system including a consumer, a substation, and a control station.
When an emergency start signal transmitted from a consumer who supplies power for an emergency using an emergency distribution line is received, the connection state between the substation and the emergency distribution line is input. Switching between the open state and the open state Switch the circuit breaker to the open state,
Notifying the consumer of the open state of the circuit breaker,
When an emergency activation midway signal transmitted from the consumer notified of the open state of the circuit breaker is received, the disconnector connected to the circuit breaker is prevented from being turned on by the interlock.
Substation control device. Notifying the control center of the open state of the circuit breaker,
The substation control device according to claim 1. Notify the control center that an emergency is in progress,
The substation control device according to claim 1 or 2. After switching the circuit breaker to the open state, the disconnector is switched to the open state.
Notifying the consumer of the open state of the circuit breaker and the disconnector.
The substation control device according to any one of claims 1 to 3. Notifying the control center of the open state of the circuit breaker and the disconnector.
The substation control device according to claim 4. Notifying the consumer and the control center of the operation of the protection relay of the circuit breaker.
The substation control device according to any one of claims 1 to 5. Generate an emergency alarm,
The substation control device according to any one of claims 1 to 6. It is a substation control method performed in a substation control device provided in the substation in a power supply system including a consumer, a substation, and a control station.
When an emergency start signal transmitted from a consumer who supplies power for an emergency using an emergency distribution line is received, the connection state between the substation and the emergency distribution line is input. Switching between the open state and the open state Switch the circuit breaker to the open state,
Notifying the consumer of the open state of the circuit breaker,
When an emergency activation midway signal transmitted from the consumer notified of the open state of the circuit breaker is received, the disconnector connected to the circuit breaker is prevented from being turned on by the interlock.
Substation control method.

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