JP2006129563A - Alternative feeding control system, its control method, main feeding command device for use in alternative feeding control system, alternative feeding command device, and generation control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alternative feeding control system that eliminates the need for switching a control right from a main feeding command device to an alternative feeding command device by the manual operation of a staff in a central feeding command office or a staff in an alternative feeding command office, and can prevent a response delay in an emergency and a delay in the balance control of a power supply and demand, or in frequency control. <P>SOLUTION: The main feeding command device 10 transmits an output command to a generation control device 30 on the basis of a demand forecast and a generation status and performs feeding control at normal operation, and when an abnormality occurs in the main feeding command device 10 and its function is lost, the alternative feeding command device 20 switches a reception switch 31 of the generation control device 30, transmits the output command from the alternative feeding command device 20 to the generation control device, and continues the control. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a supply and demand control system that switches control of a power supply system from a main power supply command device to an alternative power supply command device and a control method therefor.

  In order to deliver power to consumers who consume electricity, the power generated by a large number of hydropower stations, thermal power stations, nuclear power stations, and other power stations is converted into power stations, transmission lines, substations, power lines, etc. Constitutes an electric power system that works together. Since this power cannot be stored unlike water and gas, the power generation (supply) is adjusted according to the usage situation (demand) of the electricity that changes every moment, so that the demand and supply are always equal. , You must keep balance.

  For this reason, it is necessary to operate the entire power system with a consistent will while observing the power usage status and the status of the entire system. Therefore, electric power companies have installed power stations that give appropriate operation instructions (power supply commands) to each power station, substation, and the like. When operating a grid that is as large as a Japanese power company, multiple power stations are set up, and the division of roles is defined for proper operation. Each power company has a power station called a central power supply command station, etc., as a place for centralized management of the power station configuration of each power company. The central power supply command station has the role of a supply and demand control command for commanding power generation to the power plant based on the supply and demand balance of the entire power system simultaneously with the supervision of other subordinate power stations.

  In recent years, in order to maintain a stable power supply even in the event of an emergency disaster, the original central power supply command center (hereinafter referred to as “main / mid-supply”) has been damaged, or a function has been lost due to some abnormality, and the main communication equipment has been used. It is hoped that the crisis management system should be strengthened when it becomes impossible. For example, an alternative power supply command device of an emergency alternative central power supply command station (hereinafter referred to as an alternative middle supply) as described in Kansai Electric Power's main system power supply pamphlet (Non-Patent Document 1) has been prepared in the past. Yes.

  Conventionally, when switching the control authority of the output command of the power station of the main power supply command device of the main mid-supply to the alternative power supply command device of the alternative mid-supply, one of the staff members manually operates the changeover switch. It was carried out.

Kansai Electric Power Co., Inc., “Mainline Power Station” brochure, Kansai Electric Power Co., Inc. TEL: 06-6441-8821 (Representative) March 1997

  However, in the manual switching process from the main power supply command device to the alternative power supply command device, the emergency response is delayed, and the demand and supply adjustment or the frequency control is delayed. During this delay, the demand forecast and actual demand diverge, and after that, the command right is switched to alternative mid-supply, and discontinuous control occurs when trying to return to supply-demand adjustment based on appropriate demand forecast.

  In addition, in the state where the main medium wage staff evacuates from the command room due to fire or terrorism, the generator output connected to the power system remains in an uncontrolled state without switching to the alternative mid-supply alternative power supply command device. There is a possibility of falling. In such a case, the balance between supply and demand at each power plant may be disrupted, and control of the power system may be disrupted.

  In order to solve the above problems, an alternative power supply control system according to the present invention transmits a plurality of power generation control devices each controlling at least one generator and an output command to each power generation control device. An alternative comprising: a main power supply command device that controls the power generation control device by using a power supply control device; and an alternative power supply command device that functions as an alternative to the main power supply command device when control of each power generation control device by the main power supply command device becomes impossible The present invention relates to a power supply control system.

  Each power generation control device includes generator information transmission means for transmitting generator output information indicating the output status of the generator to be controlled to the main power supply command device and the alternative power supply command device, and the main power supply command device and the alternative power supply. An output command receiving means for receiving an output command from the command device, and an output command transmitted from the main power supply command device or the alternative power supply command device based on the output command received by the output command receiving means as a generator Selection switching means for selecting as the control information.

  The main power supply commanding device includes a generator information receiving unit that receives generator output information from each power generation control device, a demand prediction for each generator included in the jurisdiction power system, and a power generation received by the generator information receiving unit. Output command value calculating means for calculating an output command value for controlling the output of each generator included in the jurisdiction power system based on the machine output information, and an output command value calculated by the output command value calculating means Output command transmission means for transmitting an output command to each of the power generation control devices and the alternative power supply command device.

  The alternative power supply command device includes an output command alternative reception means that receives the output command transmitted from the main power supply command device as a substitute, and the generator information that receives the generator output information transmitted from each power generation control device as a substitute. Anomaly detecting means for detecting an anomaly of the main power supply command device based on the alternative receiving means, the output command received by the output command alternative receiving means, and the generator output information received by the generator information alternative receiving means; A switching command transmission means for transmitting an output command including a switching command for the selection switching means of each power generation control device to each power generation control device when it is determined in the abnormality detection means that an abnormality has occurred in the main power supply command device; It is characterized by having.

  In the alternative power supply control system according to the present invention, the alternative power supply command device is based on the generator output information received by the generator information alternative reception means and the output command received by the output command alternative reception means. An abnormal command value correcting means for correcting an output command value included in the output command to an output command value within an allowable value, and a generator received by the demand prediction and generator information receiving means for each generator included in the jurisdiction power system Based on the output information, an abnormality has occurred in the main power supply command device by the output command value alternative calculating means for calculating the output command value for controlling the output of each generator included in the jurisdiction power system, and the abnormality detecting means. Is determined by the abnormal command value correcting means until the output command by the output command value substitution calculating means is transmitted. And transmits an output command which includes the output command value.

  Here, it is preferable that the output command includes at least one of an output power command value and an output frequency command value for performing output control of the generator to be controlled as an output command value. Correspondingly, it is preferable that the generator output information includes at least one of a generator power value and a generator frequency value currently output from the generator to be controlled. Thereby, abnormality detection and abnormality correction can be performed by comparing the power value or frequency that is actually output with the power value or frequency that will be output in the future by the output command.

  Further, in the alternative power supply control system according to the present invention, when the communication state between the alternative power supply command device and each power generation control device is monitored and it is determined that control by the alternative power supply command device is impossible due to a communication failure, the alternative power supply command device Control lock means that does not switch to control from the command device is provided.

  Furthermore, the alternative power supply control system according to the present invention is characterized by comprising display means for displaying at least information from the abnormality detection means of the alternative power supply command device.

  A power generation control device according to the present invention includes a plurality of power generation control devices that respectively control at least one generator, a main power supply command device that controls the power generation control device by transmitting an output command to each power generation control device, and A power supply control device used in an alternative power supply control system comprising: an alternative power supply command device that functions as an alternative to the main power supply command device when control of each power generation control device by the main power supply command device becomes impossible The generator information transmission means for transmitting the generator output information indicating the output status of the generator to be controlled to the main power supply command device and the alternative power supply command device, and the control target from the main power supply command device and the alternative power supply command device Based on output command receiving means for receiving an output command for controlling output of the generator, output command for receiving an output command from the main power supply command device, and generator output information Main power supply command device monitoring means for monitoring the main power supply command device, monitoring result transmission means for transmitting the monitoring result to the alternative power supply command device, and the main power supply command device and the alternative based on the output command received by the output command receiving means Selection switching means for selecting any one of output commands transmitted from the power supply command device as control information of the generator.

  A main power supply command device according to the present invention includes a plurality of power generation control devices that control at least one generator, and a main power supply command device that controls the power generation control device by transmitting an output command to each power generation control device. And an alternative power supply command device that functions as an alternative to the main power supply command device when control of each power generation control device by the main power supply command device becomes impossible. The generator information receiving means for receiving the generator output information indicating the output status of the generator that is the control target of each power generation control device from each power generation control device, and the demand prediction for each generator included in the jurisdiction power system And an output command value for controlling the output of each generator included in the jurisdiction power system based on the generator output information received by the generator information receiving means And Ordinance value calculating means, characterized in that and an output command transmitting means for transmitting to each of the power generation controller and alternative dispatching device output command calculated including an output command value at the output command value calculating means.

  An alternative power supply command device according to the present invention includes a plurality of power generation control devices that respectively control at least one generator, and a main power supply command device that controls the power generation control device by transmitting an output command to each power generation device. An alternative power supply command device in a power system comprising an alternative power supply command device that functions as an alternative to the main power supply command device when control of each power generation control device by the main power supply command device becomes impossible, Output command alternative receiving means for receiving an output command including an output command value for performing output control of the generator as an alternative from the main power supply command device, and the output status of the generator that is the control target of each power generation control device Generator information alternative receiving means for receiving the generated generator output information as an alternative from each of the power generation control devices, and the supervisor receiving the monitoring results transmitted by the monitoring result transmission means of the power generation control devices. A result receiving means, characterized in that it comprises a.

  Further, in the alternative power supply command device according to the present invention, the output command value received by the output command alternative receiving means, the generator output information received by the generator information alternative receiving means, and the frequency for measuring the frequency of the power system Each power generation control device outputs an output command including an abnormality detection means for detecting an abnormality of the main power supply command device based on at least one of the frequency information obtained from the meter, and a switching command for the selection switching means of each power generation control device. Switching command transmission means for transmitting to the network.

  Further, in the alternative power supply command device according to the present invention, the output included in the output command based on the generator output information received by the generator information alternative receiving unit and the output command received by the output command alternative receiving unit. Based on the abnormal command value correcting means for correcting the command value to the output command value within the allowable value, the demand forecast for each generator included in the jurisdiction power system, and the generator output information received by the generator information receiving means An output command value substitution calculating means for calculating a substitute for an output command value for controlling the output of each generator included in the jurisdiction power system, even when supply and demand control is performed by the main power supply command device The abnormality command value correcting means of the power supply command device creates an output command value, and the output command value substitution calculating means compensates the output command based on the output information of the generator or the output command of the main power supply command device. Characterized in that it.

  Furthermore, in the alternative power supply command device according to the present invention, when it is determined from the abnormality detection means that an abnormality has occurred in the main power supply command device, a switching command for the selection switching means of each power generation control device using the switching command transmission means. Is output to each power generation control device.

  Furthermore, in the alternative power supply command device according to the present invention, the abnormality detection means includes first information (output command) from the output command alternative reception means and second information (generator) from the generator information alternative reception means. Output information) and third information (monitoring result) from the monitoring result receiving means, based on at least one piece of information.

  Furthermore, in the alternative power supply command device according to the present invention, the abnormality detection means is configured to output the communication status between the main power supply command device and the alternative power supply command device by the output command alternative reception means, the generator information alternative reception means, or the monitoring result reception means. To monitor the communication state between the alternative power supply command device and each power generation control device, and detect an abnormality that the output command from the main power supply command device cannot be transmitted due to a communication failure.

  Furthermore, in the alternative power supply command device according to the present invention, the monitoring result of the monitoring result receiving means includes information from a frequency meter that is installed at a predetermined location of the power system and measures the frequency of the power system, and detects an abnormality. The means detects an abnormality of the main power supply command device based on the monitoring result.

  The control method according to the present invention includes a control process for a plurality of power generation control devices each controlling at least one generator, and a main power supply command for controlling the power generation control device by transmitting an output command to each power generation control device. Control of an alternative power supply control system comprising: a device control process; and a control process of an alternative power supply command device that functions as an alternative to the main power supply command device when control of the power generation control device by the main power supply command device becomes impossible Regarding the method.

  And the control process of each power generation control device includes a generator information transmission step for transmitting generator output information indicating the output status of the generator to be controlled to the main power supply command device and the alternative power supply command device, and a main power supply command device. One of the output command received from the main power supply command device and the alternative power supply command device based on the output command received in the output command reception step. And a selection switching step of selecting as the generator control information.

  And the control process of the main power supply command device is received in the generator information receiving step for receiving the generator output information from each power generation control device, and the demand prediction and generator information receiving step for each generator included in the jurisdiction power system. Output command value calculating step for calculating an output command value for controlling the output of each generator included in the jurisdiction power system based on the generated generator output information, and the output command calculated in the output command value calculating step An output command transmission step of transmitting an output command including a value to each power generation control device and the alternative power supply command device.

  And the control process of the alternative power supply command device receives the output command alternative reception step of receiving the output command transmitted from the main power supply command device as a substitute, and the generator output information transmitted from each power generation control device as a substitute. An abnormality that detects an abnormality of the main power supply command device based on the generator information alternative reception process, the output command received in the output command alternative reception process, and the generator output information received in the generator information alternative reception process A switching command transmission step of transmitting an output command including a switching command for a selection switching step of each power generation control device to each power generation control device when it is determined that an abnormality has occurred in the main power supply command device in the detection step and the abnormality detection step It is characterized by having.

  According to the present invention, there is no need to switch the control right from the main power supply command device to the alternative power supply command device by manual operation of the main medium power station staff or the alternative medium power station staff, delay in response in an emergency, power demand supply balance control Or the delay of frequency control can be prevented.

  Further, by using the alternative power supply control system, the output command value of the main power supply command device is always received by the alternative power supply command device, and the output command value of the main power supply command device is known, so that the output command value is continuously Can be ensured, unnecessary generator output control associated with switching can be avoided, and stable power supply can be realized.

  Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings. In addition, what is called the central power supply command station here is a place where supply and demand control is performed, and is not limited to this name as long as it is a place that shares this role.

1 Overall Configuration FIG. 1 shows an alternative of a central power supply command station (main middle supply) and an alternative central power supply command station (alternative medium supply) including a demand control device having a control right switching function according to the present invention. It is the alternative electric power feeding control system figure which showed the whole structure of the electric power feeding instruction | command apparatus and the electric power generation control apparatus. The power supply control system according to the present embodiment includes a main power supply command device 10 including a demand control device, an alternative power supply command device 20 having a control right switching function, and a power generation control device 30, each of which is connected by a communication line.

  The main power supply command device 10 and the alternative power supply command device 20 generally control the output of the generator 32 by transmitting an output command to a power generation control device 30 provided at several tens of power plants in the jurisdiction power system. . It is necessary to supply power stably for 24 hours, and information necessary for its operation needs to be transmitted without stopping in the power supply control system. For this reason, in the power supply control system of this embodiment, there are cases where device multiplexing, an automatic detour function at the time of a line failure, and a multiplexed computer system are implemented, and this is shown here. The same applies to the case where they are not multiplexed.

  In the power supply control system according to the present embodiment, a CDT line (Cyclic Digital data Transmission equipment: a power supply information transmission device) is used as a communication line. Power supply information is captured from power equipment and the like, and the power supply information is transmitted in a cyclic manner. A communication line is used. The transmission / reception interface (14, 15, 24, 25) is not a mere communication interface but serves as an information server for communication and data exchange.

  In FIG. 1, the main power supply command device 10 and the alternative power supply command device 20 are connected by a LAN line and a CDT line, and an output command from the main power supply command device 10 is transmitted to the alternative power supply command device 20. The main power supply command device 10 and the alternative power supply command device 20 are connected to the power generation control device 30 through a CDT line, and generator output information including a generator power value is transmitted from the power generation control device 30.

  Next, the power generation control device 30 will be described. The power generation control device 30 includes a CDT line transmission / reception interface (33a, 33b), a monitoring unit 34 that monitors the main power supply command device, a reception switch 31, and at least one generator 32. The receiving side of the transmission / reception interface (33a, 33b) is connected to the input of the reception switching device 31, and the switching control terminal of the reception switching device 31 is connected to the transmission / reception interface 33a of the alternative power supply command device. The output of the reception switch 31 is further connected to the generator 32 to be controlled, and only the output command of the selected downlink transmission value file (13, 23) is transmitted to the generator 32. The monitoring unit 34 is connected to the reception side of the transmission / reception interface 33b and the transmission side of the transmission / reception interface 33a.

  The power generation control device 30 has a reception switch 31 for switching and receiving an output command including an output power command value, and can switch an output command to be selected by a command from the alternative power supply command device. During normal operation, the main power supply command device 10 transmits an output command to the power generation control device 30 based on the demand prediction and the power generation status, and performs power supply control. Occurs, the alternative power supply command device 20 switches the reception switch 31 of the power generation control device 30 and transmits an output command from the alternative power supply command device 20 to the power generation control device 30. It is possible to continue the control.

2 Configuration of Main Power Supply Command Device and Alternative Power Supply Command Device The detailed configuration and operation of the main power supply command device 10 will be described with reference to FIG. FIG. 2 is a configuration diagram of the supply and demand control device 11 provided in the main power supply command device 10. The main power supply command device 10 includes a supply and demand control device 11, transmission / reception interfaces 14, 15 a and 15 b, an emergency call switch 16, a frequency measuring device 35 and a command console 17.

  The transmission / reception interface 15 b receives the generator output information including the current generator power value from the plurality of power generation control devices 30 and stores it in the upstream transmission value file 12. The demand control device 11 acquires the current frequency from the frequency measuring device 35 and the generator power value included in the generator output information from the upstream transmission value file 12, creates an output command including the output power command value, Store in the transmission value file 13. The output command stored in the downlink transmission value file is transmitted to the alternative power supply command device 20 and the power generation control device 30 by the transmission / reception interface (15a, 15b).

  The demand control device 11 includes an output command value creation unit 51 that creates a command value schedule file 52, a scheduled output processing unit 53 that performs scheduled output based on the command value schedule file 52, and an output command that outputs a current command value file 54. And a value change output unit 55.

  The output command value creation unit 51 of the supply and demand control device 11 is based on actual generator output information and a demand forecast file 56 that is planned in advance, the time when the output command is transmitted taking into account the demand forecast, and the command converted into the output value The value schedule 52 is recalculated.

  The scheduled output processing unit 53 outputs the output value at every predetermined time recorded in the command value schedule file 52 to the current command value file 54 as the current command value. The output command value change output unit 55 creates an output command for the generator 32, and records the output command, the emergency notification, and the status notification of the main power supply command device in the downstream transmission value file 13.

  The transmission / reception interfaces 15a and 15b transmit the output command and the status notification whose output has been changed to the power generation control device 30 and the alternative power supply command device 20 via the CDT line.

  Next, the configuration and operation of the alternative power supply command device 20 will be described with reference to FIG. FIG. 3 is a configuration diagram of the supply and demand control device 21 provided in the alternative power supply command device 20. The alternative power supply command device 20 includes a supply and demand control device 21, a demand prediction file 66, transmission / reception interfaces 24, 25 a and 25 b, and a command console 26. Although FIG. 3 shows a case where the information facility with the main mid-supply command apparatus has a double communication line in order to ensure high reliability, it is not necessarily required to be double.

  The supply and demand control device 21 has a monitoring control unit 70 in addition to the configuration of the supply and demand control device 11 of the main power supply command device 10.

  The control monitoring unit 70 includes an abnormality command value correction unit 71, a frequency / command value abnormality monitoring unit 72, a control right switching determination unit 73, and a control right switching switch (S / W) 74. In a normal operation state in which the main middle pay has a control right, the control right changeover switch 74 is connected to the abnormality command value correction unit 71 and is not connected to the scheduled output processing unit 63 of the alternative power supply command device.

  The abnormality command value correction unit 71 always outputs the command value input as it is as a command value input from the main power supply command device. However, if the output of the main mid-supply command device becomes an information error, The output command value from the power supply is replaced with a command value corresponding to the power plant output obtained through the transmission / reception interface 25b, and further output without causing an information abnormality. In this way, abnormal information from the main middle pay command device is prevented from going to the previous process through the downstream transmission value file 23.

  The frequency / command value abnormality monitoring unit 72 determines that an abnormality has occurred if the system frequency measured mainly by the frequency measuring device 35 deviates from a predetermined range from the system frequency (50 Hz or 60 Hz). Since the frequency of the power system is the same at any point at the same time as long as it is linked by alternating current, the frequency measuring device 35 may be installed at any point in the power system within a range that can be measured in real time.

  In the control right switching determination unit 73, the main power supply command device loses its function from the upstream transmission value file 22, information obtained from the main power supply command device through the transmission / reception device 24, the frequency / command value abnormality monitoring unit 72, and the command console 26. For example, when it is determined that the supply and demand control of the power system has become impossible, the control right switching S / W 74 is instructed to switch to the scheduled output processing unit 63 of the alternative power supply instruction device.

  In alternative power supply command device 20, output command value creation unit 61 always creates an output command value to the power plant. This is because even if the main power supply command device 10 suddenly loses its function and the control right is switched to the alternative mid-supply, the command value to the power plant is not greatly different before and after the switching, and it is a continuous value. This is so that the command value can be shifted with Note that the command value schedule program in the main power supply command device and the command value schedule program in the alternative mid-supply command device are not necessarily the same, and there may be slight differences in the calculation results. As a countermeasure, the command value of the main power supply command device is taken into the output command value creation unit 61 via the upstream transmission value file 22, and the difference is corrected based on this.

  The command value schedule file 62, the scheduled output processing unit 63, the current command value file 64, and the output command value change output unit 65 are respectively corresponding parts (command value schedule file 52, command value schedule file 52, The scheduled output processing unit 53, the current command value file 54, and the output command value change output unit 55) are the same.

3 Transmission Value File FIG. 4 is a configuration diagram showing the configuration of the downlink transmission value file (13, 23) that is information exchanged between the main power supply command device 10, the alternative power supply command device 20, and the power generation control device 30.

  (A) The downlink transmission value file (13, 23) includes a command value (main supply command value) from the main power supply command device, a status notification (main supply status notification) of the main power supply command device, and a control right switching instruction. Contains. Further, the main supply command value includes a unit name for identifying the generator of the power plant, an output, and an operation mode. The operation mode includes DPC (Dispatching Power Control) that preferentially controls the instructed output, AFC (Automatic Frequency Control) that preferentially controls the frequency, and the like. The main supply status notification includes the internal status of the main power supply command device and an emergency report. Further, the control right switching instruction includes selection destination information to be selected by each unit.

  Next, the uplink transmission value file (12, 22) will be described. FIG. 5 shows the configuration of an upstream transmission value file, which is a storage file for information exchanged between the main power supply command device 10, the alternative power supply command device 20, and the power generation control device 30, and the configuration of related files used to create an output command. It is the block diagram shown.

  (B) The uplink transmission value file (12, 22) is information transmitted from the power generation control device 30 and includes the output power command value received by the power generation control device 30 and the generator power value. The main supply command value records the time when the command is received and includes the unit name, output, and operation mode. In the generator output information, the reporting time and the output for each unit are recorded.

  (C) The command value schedule file 52 is a file that schedules future command values based on a pre-planned demand forecast to be described later and actual power generation results, and records unit names and output commands at each time. Has been. The command value schedule is recalculated at predetermined intervals based on the actual power generation results.

  (D) The current command value file 54 is a file indicating a list of current command values based on the command value schedule file 52. When the command value is updated, the file contents are updated.

4 Control Right Automatic Switching Process FIG. 6 is a flowchart showing the flow of the control right automatic switching process. Hereinafter, the flow of processing relating to control right switching will be described. First, a case where the main power supply command device is normal will be described.

  When the control right automatic switching shown in FIG. 6 is started (step S1), a control right automatic switching determination subroutine is executed (step S2), and a determination is made based on a control right switching condition described later. If the condition is not satisfied, the process proceeds to end processing, and the control right remains “main middle pay”.

4.1 Processing at Normal Time Information transmission between systems at normal time will be described with reference to FIGS. 7 and 8. FIG. FIG. 7 is an image diagram in which information including the generator output value recorded in the upstream transmission value file (12, 22) of the power generation control device 30 is transmitted to the main power supply command device 10 and the alternative power supply command device 20. FIG. 8 is an image diagram of transmitting information including the output command value stored in the downlink transmission value file (13) from the main power supply command device 10 during normal (normal) operation to the power generation control device 30. .

  First, transmission of downlink transmission values (generator output values) and the like of each power generation control device 30 will be described. In FIG. 7, the power generation control device 30 transmits the upstream transmission value file (12, 22) including the output value of the generator 32 and the operation state information to the main power supply command device 10 and the alternative power supply command device 20 through the CDT line. By this data transmission, the main power supply command device 10 and the alternative power supply command device 20 can obtain the output command value received by the power generation control device 30 and the current output of the power generation control device 30.

  Next, transmission of information when the main power supply command device 10 is operating normally (during normal operation) will be described with reference to FIG. The transmission / reception interface 15b of the main power supply command device 10 creates a current command value file based on the information in the upstream transmission value file (12) received from the power generation control device 30, and the main power supply command device 10 calculates an output command. . Further, the transmission / reception interface 15b transmits the information of the downlink transmission value file (13) to the power generation control device 30 using the CDT line. Furthermore, the transmission / reception interface 15a transmits the information of the similar downlink transmission value file (13) to the transmission / reception interface 25a of the alternative power supply command device 20 as well.

  The alternative power supply command device 20 compares the output command value of the downlink transmission value file (13) sent from the main power supply command device 10 with the generator output of the uplink transmission value file sent from the power generation control device. It is monitored whether the difference between the output command value and the generator output exceeds a power generation allowable change amount or an abnormal numerical value. If the value is normal, the power generation control device 30 includes the command value from the main power supply command device. The downlink transmission value file (23) is transmitted with the information as it is.

  During normal operation, the reception switching device 31 of the power generation control device 30 is connected to the “main power supply command device 10” side. For this reason, only the downlink transmission value file (13) from the main power supply command device 10 among the downlink transmission value files (13, 23) transmitted from the main power supply command device 10 and the alternative power supply command device 20 is accepted, and the power generation control device. 30 controls the generator 32 based on the information of the downstream transmission value file (13).

4.2 Processing at the time of abnormality FIG. 9 is an image diagram in which a downlink transmission value (alternative power supply output command value) from the alternative power supply command device 20 at the time of an alternative operation is transmitted to the power generation control device. Hereinafter, the flow of processing will be described with reference to the flowchart of FIG.

  When the processing after S3 shown in FIG. 6 is continued (hereinafter, step is omitted and displayed as S1), a control right automatic switching determination subroutine is executed (S2), and determination is made based on a control right switching condition described later. However, if the control right switching condition is met (when abnormal), the processing from S3 is continued.

  If the control right automatic switching is to be continued, an internal switching subroutine (S3) for alternative mid-pay is executed. Next, the selection signal switching subroutine (S4) of the power generation control device is executed, and finally, the output command value transmission switching subroutine (S5) is executed, the control right is switched, and the switching process ends. Next, conditions for switching control rights will be described.

4.3 Conditions for Abnormality Detection and Control Right Switching The alternative middle salary is not always resident, and the alternative power supply command device 20 is automatically used even when there is no attendant. The control right switching determination unit 73 of the alternative power supply command device 20 in FIG. 3 determines that the supply / demand control of the power supply is impossible, and the control right is automatically switched to the alternative medium supply command device. The specific conditions for this determination are shown below.

  FIG. 10 shows a situation (case) where the control right is switched from the main power supply command device 10 to the alternative power supply command device 20, and (Table 1) shows the conditions. The switching conditions implemented in the present embodiment are the following three cases, and control rights are switched if any of these cases is met.

  FIG. 16 is an image diagram showing an image of a large-sized display that displays information of the alternative power supply control system according to the present invention, and a display image accompanying switching of the control right will also be described. This information can also be accessed from a remote location.

ケース１は、主給電指令装置１０自身の異常により、主給電指令装置１０から発電制御装置３０に対する指令が不能になった場合である。この状態の検出方法として、次の２つの場合があり、このうちどちらかが成立したらならばケース１に該当したと判断する。
（ａ）主中給に設置してある主中給システム以外の監視機能を持つ計算機が、異常を検知して、その情報を代替中給へ送信し、代替給電指令装置がその情報を受信して関知する。
（ｂ）主中給に設置してある通信装置が、情報更新しない等の異常を感知して、信号に「情報異常ビット」を立てて、それを代替中給へ送信し、代替給電指令装置がその情報異常ビットを受信して関知する。

Case 1 is a case where a command from the main power supply command device 10 to the power generation control device 30 becomes impossible due to an abnormality of the main power supply command device 10 itself. There are the following two cases as a detection method of this state, and if either of them is established, it is determined that the case 1 is satisfied.
(A) A computer having a monitoring function other than the main middle pay system installed in the main middle pay detects an abnormality and transmits the information to the alternative middle pay, and the alternative power supply command device receives the information. To know.
(B) A communication device installed in the main middle salary senses an abnormality such as not updating information, sets an “information abnormality bit” in the signal, and transmits it to the alternative middle salary. Receiving and knowing the information abnormal bit.

  Abnormality or uncontrollable is determined by the methods (a) and (b), and in the display image of FIG. 16, the display character is displayed as “red” (S100), and the power feeding control device is defective or uncontrollable power generation control The number of devices is displayed (S102).

Case 2 is when most of the communication facilities and transmission lines connecting the main medium pay and each power plant become abnormal. There are the following two cases as a detection method of this state, and if either of these is established, it is determined that the case 2 is satisfied.
(C) If the communication device installed at the power station does not update the information sent from the main middle salary even after a predetermined time (for example, about 5 seconds), it detects that it is abnormal and Send information that informs about the abnormality. For example, a method of setting an “information abnormality bit” in a signal is conceivable. When it is transmitted to the alternative middle salary and abnormal information is sent from a certain number of power stations or more, it is determined that it corresponds to case 2 and is informed.
(D) When the main middle salary and the power plant share the upstream and downstream transmission lines, the communication equipment installed in the main middle salary indicates that the upstream information from the power plant to the main middle salary is a predetermined time. If it is not updated even after (for example, about 5 seconds), it is determined that there is an abnormality in the transmission line itself. If the communication line to a certain number of power plants becomes abnormal, the communication device installed in the main medium pay will send an error message to the alternate Receive and know information.

  As a result, the main power supply command device 10 can no longer control the power generation control device, and is determined as “main power supply command device abnormality”. In this case, in the display image of FIG. 16, a display of the main power supply uncontrollable part (S103) or a display of a communication abnormality with the alternative power supply command device (S104) is displayed.

The last case 3 is a case where the main medium wage employee has to evacuate from the command room due to fire or terrorism. In this case, the following two detection methods can be considered.
(E) When the main middle pay operator evacuates, if the emergency call button can be pressed to evacuate, the replacement medium pay is received.
(F) When the supply / demand balance of the electric power system is disrupted due to the inability to operate the main / middle supply, and the system frequency fluctuates beyond a certain range.

  In this case, as in the case 1 and case 2, if either the condition (e) or (f) is satisfied, it may be determined that the case 3 is detected. Considering the fact that the system frequency is fluctuating due to difficulty in power supply and demand control itself despite the fact that it is accidentally pressed, and the main mid-supply control device and each power plant control device are all sound. Then, it may be determined that the case 3 is satisfied only when both of the two conditions are satisfied.

  Further, these pieces of information including the emergency call are notified to the alternative power supply command device 20 and related departments through the CDT line and the LAN line. For example, in the display image of FIG. 16, the emergency call is turned on (S101, S106). It should be noted that the abnormality in the power control system is not limited to these, and it goes without saying that other abnormalities can be processed in the same manner as in the above three cases.

  Next, the large display of the command console 26 shown in FIG. 16 will be additionally described. The large display can display information on the main power supply command device 10, the alternative power supply command device 20, the power generation control device 30 and the communication line, and displays control right display, switching status display, power generation control device status. Display, emergency report display, switching lock information display and command value display are possible.

  The control right switching process will be described below. FIG. 11 is a flowchart showing the flow of the control right automatic switching determination process. When the control right automatic switching determination subroutine (S2) is started, it is determined in step S20 whether the control right switching condition is satisfied. If the control right switching condition is satisfied, the process proceeds to step S21 to alert the operator to the execution of the control right switching by alerting the large display on the command console with an alarm, sound and button flicker. It is displayed on the CRT screen (not shown) which causes the operator to switch the control right (S22).

  Next, it is determined whether or not the switching function due to a communication line abnormality between the alternative power supply command device 20 and the power generation control device 30 is locked (S23). Although details of the lock function will be described later, when the switching function is locked, an alarm, sound and button flicker of the large display of the command console 26 are notified. Furthermore, in step S27, the switching function is locked, and it is displayed on the CRT screen that control right switching is not performed, and the process proceeds to the end (S28).

  If the switching function is not locked (S23), the start of control right automatic switching is displayed on the CRT screen (S25), and the process proceeds to the next process (S26).

  FIG. 12 is a flowchart showing the flow of the internal switching process in the alternative power supply instruction device 20. The alternative middle pay internal switching subroutine (S3) is an internal process for starting the alternative operation after the alternative supply ends the recording and monitoring process peculiar to the normal operation. When the internal switching process is started, the operation state flag is changed from “normal operation” (normal) to “alternative operation” (abnormal) in step S30, and an alarm, sound and button flicker are displayed on the large display of the command console 26. Notify by.

  Next, in order to stop the recording and monitoring process during normal (normal) operation, a stop request is transmitted to a related system (not shown) (S31). Furthermore, in step S32, a process required for the alternative operation is started, and the process proceeds to the next process (S33).

  As shown in FIG. 3, the abnormality occurs in the main power supply command device 10, and the difference between the output power command value sent from the main power supply command device 10 and the generator power value sent from the power generation control device 30. Is greater than the allowable amount, the alternative power supply command device 20 corrects the abnormal value of the output command to the current output value of the power generation control device 30. For this reason, the abnormal command value is corrected at the stage where the reception switch 31 of the power generation control device 30 is switched.

  Since a required switching time (for example, 10 seconds) until the control right switching of all the power generation control devices 30 is completed is necessary, during this period, by transmitting the corrected output command from the alternative power supply command device 20, After the confusion of the power generation control device 30 is suppressed and the control right switching is completed, the operation based on the output command of the alternative power supply command device 20 described later is started.

  FIG. 13 is a flowchart showing a flow of processing for instructing the power generation control device 30 to switch the selection signal. The selection signal switching subroutine (S4) of the power generation control device 30 switches the output command from the “main power supply command device (main supply)” received by each power generation control device to “alternate power supply command device (alternative supply)”. It is processing.

  When the selection signal switching process is executed, it is confirmed whether or not the destination from which the power generation control device has received the output command is “alternative power supply command device (alternative mid-supply)” (S41). If it is “alternate middle salary”, the selection signal is not switched and the process proceeds to the next step.

  Next, when the selection state response impossible is received from the power generation control device 30 (S42), the selection signal is not switched. Next, when the switching exclusion setting is made (S43), the selection signal is not switched. Next, when the above conditions are not satisfied, a selection signal of “alternative power supply command device (alternative intermediate supply)” is transmitted to the power generation control device 30 (S44). Next, the change of the selection signal is output to the CRT screen of the command console 26 to notify the operator (S45).

In step S46, it waits for a predetermined time T ₃ (for example, about 10 seconds) until responses from all the power generation control devices 30 come. Incidentally, in response that a delay time of the alternative dispatching device 20 alternative power supply command device switches all the power generation controller 30 sends a switching instruction from 20 until answerback a predetermined time T _3.

  In step S47, when the number of power generation control devices 30 whose selection signal is “alternate power supply command device (alternative supply)” is less than m, in steps S48 and S49, the operator is notified and when the number of power generation control devices 30 is switched over m. In step S50, the output command value transmission switching process is started, and the process proceeds to the next process in step S51.

  FIG. 14 is a flowchart showing a flow of processing in which output command value transmission switching is performed from the main power supply command device 10 to the alternative power supply command device 20. The output command value transmission switching subroutine (S5) changes the output command value transmitted from the alternative power supply command device 20 to the output power command value created by the alternative power supply command device 20 from the output command value sent from the main power supply command device 10. This is a process of switching, and after the switching is completed, control from the alternative power supply command device 20 becomes possible.

  In normal (normal) operation and alternative operation, the system separation, CDT line abnormality, and control method and operation mode by command value selection are different. Switch.

  When the output command value transmission switching subroutine (S5) is started, the control method / operation mode is changed from step S61 to step S64 depending on the line state and system state of each power generation control device 30. If it is determined in step S64 that the command value selection is medium pay, the control method is switched to manual in step S65.

  In step S66, batch automatic manual designation is determined in order to smoothly perform supply and demand control after switching. If the batch automatic manual setting is set to manual in step S67, it is changed to automatic.

  In step S68, transmission of the current command value file is started in accordance with the command value schedule file 62 created by the alternative power supply command device 20 and the manually input output command value. In step S69, the end of control right switching is notified to the large display of the command console 26 by alarm output, sound output, and button flicker. In step S70, the completion of control right switching is output to the CRT screen, and then the process ends (S71). By the above process, the alternative power supply command device can take over the process. Next, an exception process that does not take over the process to the alternative power supply command device 20 will be described.

4.4 Exception Processing FIG. 15 is a state transition diagram showing a state where lock conditions are established and state transitions notified to the man-machine output and main power supply command device 10. The lock function monitors the information transmission state between the alternative power supply command device 20 and the alternative power supply command device 20 and the power generation control device 30, and determines that the supply and demand control in the alternative power supply command device 20 is impossible. This function automatically suppresses the control right switching function so as not to perform switching.

  When the switching lock condition is satisfied, alarm output and button flicker are performed, and the satisfied condition and lock execution are output to the CRT screen and sound is output. Only the state in step S80 of FIG. 15 can be operated, and in other steps S81 or S82, the operation is disabled or the request is ignored.

5. FIG. 17 is a timing chart of processing in which output command value transmission switching is performed from the main power supply command device 10 to the alternative power supply command device 20. Signals in the figure are signals of frequency, command value and power demand, abnormality monitoring, power generation control device reception switching, and alternative power supply command device output command from the top. Furthermore, “A” to “H” in the figure are signal change points.

  First, the operation in this embodiment will be described. In the figure, when the command value normally corresponds to the power demand, the frequency changes in a steady state (for example, 50 Hz). Next, when an abnormality occurs in the main power supply command device at the “A” point and only the power demand increases without updating the command value, the frequency of the power system starts to gradually decrease.

  When the abnormality monitoring signal of the alternative power supply command device 20 is “ON” and an abnormality is detected (“B” point), the abnormality command correction unit 71 changes the signal to a broken line. Next, the power generation control device 30 receives based on the switching signal sent from the alternative power supply command device 20, and switching is started (from "C" point to "D" point). When all of the plurality of power generation control devices 30 are switched at the “E” point, automatic return is performed, and transmission of the output command based on the supply and demand prediction by the alternative power supply command device is completed.

  Furthermore, the command value for the power demand follows from the “E” point to the “F” point, and the frequency shifts to a steady state. Thereafter, at the “F” point, the supply and demand are balanced, and the frequency returns to the normal value. The above series of processing is automatically processed.

  Next, the effect | action in the conventional manual operation is demonstrated. For example, according to verification by the applicant of the present application, in the case of manual operation, about 10 minutes for initial response until it is recognized that an abnormality has occurred at the “A” point, about 10 minutes for situation judgment, and about 10 minutes for recovery operation The power demand to the “H” point where the command value follows the power demand can be handled in about 30 minutes from the occurrence of abnormality at the “A” point to the “G” point for manual return. The difference in the command value and the frequency decrease were remarkable.

  As described above, according to the present embodiment, it is not necessary to manually operate the changeover switch of the main middle payer or the alternative medium pay station staff, and the automatic processing of the alternative power supply command device 20 delays the emergency response, and demand And there is an effect that it is possible to improve the adjustment of the supply or the delay of the frequency control.

  Also, when a major disaster occurs and an emergency such as loss of function of the main power supply command device 10 occurs, the alternative power supply command device 20 notifies the operator of the current state, recognizes the situation in a short time, and takes appropriate measures It becomes possible. According to an example of this embodiment, the automatic switching processing time (about 30 seconds) is used, but it goes without saying that the switching can be performed more quickly by improving the processing speed of the communication apparatus and increasing the speed of the processing computer.

  Further, the function of correcting the abnormal command value from the main power supply command device 10 and the automatic switching function have the effect of suppressing sudden supply and demand adjustment or frequency control from the abnormal state to the normal state based on the predicted supply and demand value.

  Furthermore, even if a middle-paid employee evacuates from the command room due to fire or terrorism, etc., if the equipment is operating normally, the operation continues and the main power supply command device 10 loses its function. Alternatively, there is an effect that it is automatically switched to the alternative power supply command device 20 according to a command from the alternative power supply command device 20.

A main power supply command station of a central power supply command station (medium supply) including a demand control device equipped with a control right switching function according to the present invention, an alternative power supply command apparatus of an alternative central power supply command station (alternate medium power supply), and a power generation control device It is the alternative electric power feeding control system figure which showed the whole structure. It is a block diagram of the supply-and-demand control apparatus provided in the main electric power feeding instruction | command apparatus. It is a block diagram of the supply-and-demand control apparatus provided in the alternative power supply instruction | command apparatus. It is the block diagram which showed the structure of the information of the downlink transmission value file exchanged by the main electric power feeding instruction | command apparatus, an alternative electric power feeding instruction | command apparatus, and a power generation control apparatus. It is the block diagram which showed the structure of the information of the upstream transmission value file exchanged by the main power supply instruction | command apparatus, an alternative electric power supply instruction | command apparatus, and a power generation control apparatus, and the information of the related file used for preparation of an output instruction | command. It is a flowchart which shows the flow of a process of control-right automatic switching. It is an image figure which transmits the upstream transmission value of an electric power generation control apparatus to a main electric power feeding command apparatus and an alternative electric power feeding command apparatus. It is an image figure which transmits a downstream transmission value from the main electric power feeding instruction | command apparatus at the time of normal operation to an electric power generation control apparatus. It is an image figure which abnormalities generate | occur | produce and transmits the downstream transmission value from the alternative electric power feeding instruction | command apparatus at the time of alternative operation to an electric power generation control apparatus. It is the state figure which showed the condition which switches a control right from a main power supply command device to an alternative power supply command device. It is a flowchart which shows the flow of a process of control-right automatic switching determination. It is a flowchart which shows the flow of the process of internal switching in an alternative electric power supply instruction | command apparatus. It is a flowchart figure which shows the flow of the process which instruct | indicates selection signal switching with respect to a power generation control apparatus. It is a flowchart which shows the flow of the process in which output command value transmission switching is performed from a main power supply command device to an alternative power supply command device. It is a state transition diagram which shows a lock condition establishment condition and the state transition notified to a man machine output and the main electric power feeding instruction | command apparatus. It is the image figure which showed the image of the large sized display which displays the information of the alternative electric power feeding control system which concerns on this invention. It is a timing chart figure of processing in which output command value transmission switching is performed from a main power supply command device to an alternative power supply command device.

Explanation of symbols

  10 Main power supply command device, 11, 21 Supply / demand control device, 12, 22 Up transmission value file, 13, 23 Down transmission value file, 14, 15, 24, 25, 33 Transmission / reception interface, 16 Emergency call switch, 17, 26 command Table, 20 Alternative power supply command device, 30 Power generation control device, 31 Reception switching device, 32 Generator, 34 Monitoring unit, 35 Frequency measuring device, 51, 61 Output command value creation unit, 52, 62 Command value schedule file, 53, 63 Regular output processing unit, 54, 64 Current command value file, 55, 65 Output command value change output unit, 56, 66 Demand forecast file, 70 Monitoring control unit, 71 Abnormal command value correction unit, 72 Frequency / command value abnormality monitoring Part, 73 control right change judgment part, 74 control right change switch.

Claims (14)

A plurality of power generation control devices for controlling at least one generator, a main power supply command device for controlling the power generation control device by transmitting an output command to each power generation control device, and each power generation control by the main power supply command device An alternative power supply control system comprising an alternative power supply command device that functions as an alternative to the main power supply command device when control of the device becomes impossible,
Each power generation control device
Generator information transmission means for transmitting generator output information indicating the output status of the generator to be controlled to the main power supply command device and the alternative power supply command device;
An output command receiving means for receiving an output command from the main power supply command device and the alternative power supply command device;
Selection switching means for selecting one of the output commands transmitted from the main power supply command device and the alternative power supply command device as control information of the generator based on the output command received by the output command receiving means; ,
The main power supply command device
Generator information receiving means for receiving generator output information from each power generation control device;
An output command value for controlling the output of each generator included in the jurisdiction power system based on the demand forecast for each generator included in the jurisdiction power system and the generator output information received by the generator information receiving means An output command value calculating means for calculating;
Output command transmission means for transmitting an output command including the output command value calculated in the output command value calculation means to each power generation control device and the alternative power supply command device,
Alternative power supply command device
Output command alternative receiving means for receiving the output command transmitted from the main power supply command device as an alternative;
Generator information alternative receiving means for receiving as an alternative the generator output information transmitted from each power generation control device;
An abnormality detecting means for detecting an abnormality of the main power supply command device based on the output command received in the output command alternative receiving means and the generator output information received in the generator information alternative receiving means;
When an abnormality is detected in the main power supply command device by the abnormality detection means, a switching command transmission means for transmitting an output command including a switching command for the selection switching means of each power generation control device to each power generation control device;
An alternative power supply control system comprising: The alternative power supply control system according to claim 1,
Alternative power supply command device
Based on the generator output information received by the generator information alternative receiving means and the output command received by the output command alternative receiving means, the output command value included in the output command is corrected to an allowable output command value. Abnormal command value correcting means for
Output command value for controlling the output of each generator included in the jurisdiction power system based on the demand forecast for each generator included in the jurisdiction power system and the generator output information received by the generator information receiving means An output command value alternative calculating means for calculating an alternative;
Have
When an abnormality is detected in the main power supply command device by the abnormality detection means, it is corrected by the abnormality command value correction means until the selection switching means of each power generation control device is switched and the output command by the output command value substitution calculation means is transmitted. An alternative power supply control system that transmits an output command including an output command value. In the alternative power supply control system according to claim 1 or 2,
Control lock means that monitors the communication status between the alternative power supply command device and each power generation control device and does not switch to control from the alternative power supply command device when it is determined that control by the alternative power supply command device is impossible due to a communication failure. An alternative power supply control system comprising: In the alternative electric power feeding control system of any one of Claim 1 to 3,
An alternative power supply control system comprising display means for displaying at least information from an abnormality detection means of an alternative power supply command device. A plurality of power generation control devices for controlling at least one generator, a main power supply command device for controlling the power generation control device by transmitting an output command to each power generation control device, and each power generation control by the main power supply command device A power generation control device used in an alternative power supply control system comprising an alternative power supply command device that functions as an alternative to the main power supply command device when control of the device becomes impossible,
Generator information transmission means for transmitting generator output information indicating the output status of the generator to be controlled to the main power supply command device and the alternative power supply command device;
An output command receiving means for receiving an output command for performing output control of the generator to be controlled from the main power supply command device and the alternative power supply command device;
Main power supply command device monitoring means for monitoring the main power supply command device based on the output command and generator output information for receiving the output command from the main power supply command device;
Monitoring result transmitting means for transmitting the monitoring result to the alternative power supply command device;
Selection switching means for selecting one of the output commands transmitted from the main power supply command device and the alternative power supply command device based on the output command received in the output command receiving means as control information of the generator;
A power generation control device comprising: A plurality of power generation control devices for controlling at least one generator, a main power supply command device for controlling the power generation control device by transmitting an output command to each power generation control device, and each power generation control by the main power supply command device A main power supply command device used in an alternative power supply control system comprising an alternative power supply command device that functions as an alternative to the main power supply command device when control of the device becomes impossible,
Generator information receiving means for receiving, from each power generation control device, generator output information indicating the output status of the power generator controlled by each power generation control device;
Output command value for controlling the output of each generator included in the jurisdiction power system based on the demand forecast for each generator included in the jurisdiction power system and the generator output information received by the generator information receiving means An output command value calculating means for calculating;
Output command transmission means for transmitting an output command including the output command value calculated by the output command value calculation means to each power generation control device and the alternative power supply command device;
A main power supply command device comprising: A plurality of power generation control devices for controlling at least one generator, a main power supply command device for controlling the power generation control device by transmitting an output command to each power generation device, and each power generation control device by the main power supply command device An alternative power supply command device in an electric power system of an alternative power supply control system comprising an alternative power supply command device that functions as an alternative to the main power supply command device when control of the power supply becomes impossible,
Output command alternative receiving means for receiving as an alternative an output command including an output command value for performing output control of the generator to be controlled from the main power supply command device;
Generator information alternative receiving means for receiving, as an alternative, generator output information indicating the output status of the generator that is the control target of each power generation control device;
Monitoring result receiving means for receiving the monitoring result transmitted by the monitoring result transmitting means of the power generation control device;
An alternative power supply command device comprising: In the alternative power supply command device according to claim 7,
At least one of the output command value received by the output command alternative receiving means, the generator output information received by the generator information alternative receiving means, and the frequency information obtained from the frequency meter that measures the frequency of the power system. An abnormality detecting means for detecting an abnormality of the main power supply commanding device based on the information;
A switching command transmission means for transmitting an output command including a switching command for the selection switching means of each power generation control device to each power generation control device;
An alternative power supply command device comprising: In the alternative power supply command device according to claim 7 or 8,
Based on the generator output information received by the generator information alternative receiving means and the output command received by the output command alternative receiving means, the output command value included in the output command is corrected to an allowable output command value. Abnormal command value correcting means for
Output command value for controlling the output of each generator included in the jurisdiction power system based on the demand forecast for each generator included in the jurisdiction power system and the generator output information received by the generator information receiving means An output command value alternative calculating means for performing alternative calculation,
Even when supply and demand control is performed by the main power supply command device, the abnormal command value correction means of the alternative power supply command device creates an output command value and outputs the output command based on the output information of the generator or the output command of the main power supply command device. An alternative power supply command device, wherein an output command is corrected by a value alternative calculation means. In the alternative power supply command device according to any one of claims 7 to 9,
When it is determined from the abnormality detection means that an abnormality has occurred in the main power supply command device, an output command including a switching command for the selection switching means of each power generation control device is transmitted to each power generation control device using the switching command transmission means. An alternative power supply command device characterized by the above. In the alternative power supply command device according to any one of claims 7 to 10,
The abnormality detection means includes first information (output command) from the output command alternative receiving means, second information (generator output information) from the generator information alternative receiving means, and third information from the monitoring result receiving means. An alternative power supply commanding device that makes a determination based on at least one piece of information (monitoring result). In the alternative power supply command device according to any one of claims 7 to 11,
The abnormality detection means includes a communication state between the main power supply command device and the alternative power supply command device by the output command alternative reception means, and communication between the alternative power supply command device and each power generation control device by the generator information alternative reception means or the monitoring result reception means. An alternative power supply command device characterized by detecting an abnormality in which an output command from the main power supply command device cannot be transmitted due to a communication failure. In the alternative power supply command device according to any one of claims 7 to 12,
The monitoring result of the monitoring result receiving means includes information from a frequency meter that is installed at a predetermined location of the power system and measures the frequency of the power system,
The abnormality detection means detects an abnormality of the main power supply command device based on the monitoring result. A control process for a plurality of power generation control devices each controlling at least one generator, a control process for a main power supply command device for controlling the power generation control device by transmitting an output command to each power generation control device, and a main power supply A control method of an alternative power supply command device that functions as an alternative to the main power supply command device when control of the power generation control device by the command device becomes impossible,
The control process of each power generation control device
A generator information transmission step of transmitting generator output information indicating the output status of the generator to be controlled to the main power supply command device and the alternative power supply command device;
An output command receiving step of receiving an output command from the main power supply command device and the alternative power supply command device;
A selection switching step of selecting any one of the output commands transmitted from the main power supply command device and the alternative power supply command device based on the output command received in the output command reception step as control information of the generator,
The control process of the main power supply command device is
A generator information receiving step for receiving generator output information from each power generation control device;
An output command value for controlling the output of each generator included in the jurisdiction power system based on the demand forecast for each generator included in the jurisdiction power system and the generator output information received in the generator information receiving step An output command value calculation step to calculate,
An output command transmission step of transmitting an output command including the output command value calculated in the output command value calculation step to each power generation control device and the alternative power supply command device, and
The control process of the alternative power supply command device is
An output command alternative reception step of receiving the output command transmitted from the main power supply command device as an alternative;
A generator information alternative reception step of receiving the generator output information transmitted from each power generation control device as an alternative;
An abnormality detection step of detecting an abnormality of the main power supply command device based on the output command received in the output command alternative reception step and the generator output information received in the generator information alternative reception step;
When it is determined that an abnormality has occurred in the main power supply command device in the abnormality detection step, a switching command transmission step for transmitting an output command including a switching command for the selection switching step of each power generation control device to each power generation control device;
The control method of the alternative electric power feeding control system characterized by including these.

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