Power distribution and transfer load support system and power distribution and transfer load support program

Abstract

To optimize a switch during load transfer when load transfer is performed in a power supply system.SOLUTION: A distribution load transfer support system includes a distribution system diagram including a plurality of locations of switch, a distribution system database 31 that stores a normal operation delay time, which is the delay operation time of each switch during the normal operation, and a support task 41 that, when each of the switch is turned on during the normal operation delay time according to a power supply route at the time load transfer is performed in the power supply system based on the distribution system diagram, determines a predetermined switch delay operation time as a load delay operation time so that the plurality of switches is not turned on at the same time when they are turned on at the same time.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a power distribution load transfer support system and a power distribution load transfer support program that support optimization of switches during load transfer (loop switching) in a power supply system. [Background technology]

[0002] Traditionally, when performing outage work on high-voltage distribution lines or substations, distribution automation systems are used to perform load transfer operations. This means that designated section switches are turned on and off to avoid the work area and supply power to other areas. However, if the delay operation times (time limits, closing timing) of the section switches overlap due to load transfer, the fault section detection device cannot sequentially open the section switches during a power outage to identify the affected area. Therefore, when the delay operation times of the section switches overlap, it is necessary to adjust the delay operation times of each section switch.

[0003] Meanwhile, a rapid power transmission method is known that, when a test charging ban is in place in a work section, allows for rapid power transmission to be performed to areas other than the work section and the section where the accident occurred if an accident occurs elsewhere on the power distribution line (see, for example, Patent Document 1). When an accident occurs in the power distribution system and the circuit breaker at the substation is turned off, this method locks off the power supply and load side switches in the section including the registered work section, and estimates the section where the accident occurred based on accident information from a switch with a measurement function. Then, test charging is performed in this section where the accident is suspected to be the cause of the accident, and the switch closest to the power supply side of this section where the accident occurred is locked off, and power is transmitted from there to the switch on the power supply side. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-149881 Summary of the Invention [Problem to be solved by the invention]

[0005] In the past, when the delay times of section switches overlap due to a change in load, the delay times of each section switch had to be adjusted manually. That is, while looking at a power distribution system diagram, a time limit slip indicating when each section switch will close due to a change in load was created, and then, while looking at this time limit slip, the delay times of each section switch were adjusted so that the delay times did not overlap. This not only required a great deal of labor and time, but also posed the risk of not being able to adjust the delay times appropriately.

[0006] Furthermore, some section switches have a short delay time due to an X-lock function (a function that locks if power is lost during the delay time). For this reason, it may be necessary to change the type and model of the section switch in consideration of the characteristics of such section switches, which not only requires a great deal of effort and time, but also raises the risk of not being able to make the appropriate changes.

[0007] Therefore, an object of the present invention is to provide a power distribution transfer load support system and a power distribution transfer load support program that enable optimization of switches when a power supply system is transferred. [Means for solving the problem]

[0008] In order to solve the above problem, the invention of claim 1 provides a power distribution system including a power distribution diagram storage means for storing a delay operation time that is a time from when the power supply side of a switch is charged until the switch is closed, a time limit storage means for storing a normal delay operation time that is a delay operation time of each switch under normal conditions, and a calculation means for calculating the delay operation time of a predetermined switch as a load-switched delay operation time so that the multiple switches do not close simultaneously when the multiple switches close at the normal delay operation time according to a power supply route when a power supply system is switched based on the power distribution diagram. When the type of the predetermined switch does not allow the load transfer delay operation time, the calculation means determines a type that allows the load transfer delay operation time for the predetermined switch. This is a power distribution transfer load support system characterized by the above.

[0010] Claim 2 The invention is 1 to In the power distribution transfer load support system described above, the calculation means is characterized in that, if there is a switch whose power transmission direction via the power supply route does not match the set allowable power transmission direction, it calculates the allowable power transmission direction for the switch.

[0011] Claim 3 The invention of claim 1 or 2 In the power distribution load transfer support system described above, the calculation means uses a load transfer learning model that has been machine-learned based on past performance data so that when the power supply route and the normal delay operation time of each switch are input, the delay operation time of a specified switch is output as the load transfer delay operation time so that multiple switches do not close simultaneously.

[0012] Claim 4 The invention defines a delay operation time as the time from when the power supply side of a switch is charged until the switch is closed, and causes a computer to function as a system diagram storage means in which a distribution system diagram including the positions of a plurality of the switches is stored, a time limit storage means for storing a normal delay operation time which is the delay operation time of each of the switches under normal conditions, and a calculation means for calculating the delay operation time of a predetermined switch as a load-switched delay operation time so that the multiple switches do not close simultaneously when each of the switches closes at the normal delay operation time according to a power supply route when a power supply system is switched based on the distribution system diagram. When the type of the predetermined switch does not allow the load transfer delay operation time, the calculation means determines a type that allows the load transfer delay operation time for the predetermined switch. This is a power distribution transfer load support program characterized by the above.

[0014] Claim 5 The invention is 4 In the power distribution transfer load support program described in the above, when there is a switch whose power transmission direction through the power supply route does not match the set allowable power transmission direction, the calculation means determines the allowable power transmission direction for the switch.

[0015] Claim 6 The invention is 4 or 5 In the power distribution load transfer support program described above, the calculation means uses a load transfer learning model that has been machine-learned based on past performance data so that when the power supply route and the normal delay operation time of each switch are input, the delay operation time of a specified switch is output as the load transfer delay operation time so that multiple switches do not close simultaneously. [Effects of the Invention]

[0016] Claim 1 and Claim 4 According to the invention described in (1), when multiple switches are closed simultaneously due to a switching load under normal delay operation times, the delay operation times of the specified switches are calculated as the switching load delay operation times so that they do not close simultaneously. In other words, the delay operation times are automatically adjusted so that multiple switches do not close simultaneously even when a switching load is applied, which not only reduces the labor and time required for adjustment but also makes it possible to properly adjust the delay operation times without omission. In this way, it is possible to easily and quickly optimize the switches when a switching load is applied.

[0017] Claim 1 and claims 4 According to the invention described in (1), if a specified switch model does not close with the load-switching delay operation time, a model that allows the load-switching delay operation time is determined for this switch. In other words, for a switch whose delay operation time needs to be adjusted or changed, a model that can close with the load-switching delay operation time is automatically determined, which not only reduces the effort and time required to optimize or change the switch model, but also makes it possible to properly adjust the model without omission. In this way, it is possible to easily and quickly optimize switches when the load is switched.

[0018] Claim 2 and claims 5According to the invention described in [2], if there is a switch whose power transmission direction according to the power supply route during load transfer does not match the set allowable power transmission direction, the allowable power transmission direction is calculated for that switch. In other words, if the power transmission direction changes due to load transfer and a switch does not match this power transmission direction, the allowable power transmission direction to be set for that switch is automatically calculated. This not only reduces the effort and time required to optimize and change the power transmission direction of the switch, but also makes it possible to properly adjust the power transmission direction without omission. In this way, it is possible to easily and quickly optimize switches during load transfer.

[0019] Claim 3 and claims 6 According to the invention described in the above, a machine-learned learning model for switching load is used to output a switching load delay operation time for a predetermined switch so that multiple switches do not close at the same time, making it possible to calculate a more appropriate switching load delay operation time for a more appropriate switch. As a result, it is possible to easily and quickly optimize the switch during switching load. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a schematic block diagram showing a power distribution transfer load support system according to an embodiment of the present invention; [Figure 2] 2 is a diagram showing a part of a power distribution system diagram stored in a power distribution system database of the power distribution transfer load support system of FIG. 1. FIG. [Figure 3] FIG. 3 is a diagram showing a time limit table during normal operation in the power distribution system diagram of FIG. 2. [Figure 4] FIG. 3 is a diagram showing a power supply route when a load is transferred in the power distribution system diagram of FIG. 2. [Figure 5] FIG. 5 is a diagram showing a time limit table before adjustment in the power supply route of FIG. 4. [Figure 6] FIG. 6 is a diagram showing the time limit table of FIG. 5 after adjustment. [Figure 7] 2 is a functional block diagram showing a schematic configuration of a learning model for load transfer in the power distribution load transfer support system of FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will be described below based on the illustrated embodiments.

[0022] Figure 1 is a schematic block diagram showing a distribution transfer load support system 1 according to an embodiment of the present invention. This distribution transfer load support system 1 is a system for supporting the optimization of section switches (pole-mounted switches, fault section detection devices) DM during load transfer (loop switching) in a power supply system. In this embodiment, the distribution transfer load support system 1 is configured with one computer server, but it may also be configured with multiple computers, storage devices, etc.

[0023] The power distribution transfer load support system 1 mainly comprises an input unit 21, a display unit 22, a communication unit 23, a memory unit 3, a support task (computation means) 41, a learning task 42, and a central processing unit 5 that controls these.

[0024] The input unit 21 is an interface for inputting various information and commands, and specifically inputs commands to start the support task 41. The display unit 22 is a display that displays various data and information, and specifically displays a time limit table and a proposed DM time limit change procedure, which will be described later. The communication unit 23 is an interface for communicating with the outside via the Internet network, a telephone communication network, etc., and specifically receives information about the transfer load from the distribution automation system 101.

[0025] Here, the distribution automation system 101 has a configuration equivalent to that of distribution automation systems widely adopted by electric power companies and the like. That is, it constantly monitors the operational status of distribution lines, and when a power outage occurs due to a distribution line accident, for example, it identifies the power outage section while controlling the opening and closing of section switches DM and feeder circuit breakers, and distributes power to distribution lines other than the power outage section (automatic backfeed). Also, when a power outage occurs due to a substation accident (extra-high voltage accident, momentary voltage drop, etc.), it distributes power from surrounding distribution lines to the area where the power outage occurred (automatic backfeed). Furthermore, it is used to perform load transfer when performing work on a high-voltage distribution line or a substation. That is, the distribution automation system 101 can operate a predetermined section switch DM on and off so that power can be supplied to other areas by avoiding the work area.

[0026] The storage unit 3 mainly includes a power distribution system database (system diagram storage means, time limit storage means) 31, a load transfer learning model 32, and a load transfer performance database 33. Here, the power distribution system database 31 will be explained, and the load transfer learning model 32 and the load transfer performance database 33 will be described later.

[0027] The distribution system database 31 is a database that stores a distribution system diagram including the locations of multiple section switches DM, as well as information (switch information) about each section switch DM, including its normal delay operation time. That is, first, a distribution system diagram illustrating the layout of distribution lines, the locations of section switches DM, feeder circuit breakers, and substations is stored, a portion of which is shown in Figure 2.

[0028] Furthermore, the normal delay operation time, model, type, etc. are stored as switch information for each section switch DM. Here, the delay operation time is the time (X hours) from when the power supply side of the section switch DM is charged until the section switch DM automatically closes, and can be set within a range of, for example, 7 to 120 seconds, with the normal delay operation time being the normal delay operation time. Meanwhile, the opening operation time of each section switch DM, that is, the Y time for determining that a power outage is a fault in the load side section if the section switch DM detects a power outage within Y hours after the automatic closing operation, is all set to the same time (for example, 5 seconds).

[0029] The section switch DM is stored as either type F or type C. In the event of a distribution line fault, the F type locks the Y time by reclosing the substation circuit breaker, then isolates the section beyond the fault by reclosing, and transmits power to the healthy section on the substation side. It also has a reverse transmission prevention function and a power transmission direction setting function, and if the power transmission direction is not the permitted direction (allowable power transmission direction), it will not transmit power to the load side beyond this section switch DM. Furthermore, if a voltage on the reverse transmission side is detected during X time, the X time is released, and if the voltage on the reverse transmission side disappears, the X time is restarted from the beginning. For this reason, the normal power transmission direction at the installation location should be set as the allowed power transmission direction.

[0030] On the other hand, with the C-type, when a fault occurs on a distribution line, the substation circuit breaker is reclosed to lock time Y of the slave stations installed on the power supply side of the faulted section, and time X of the slave stations installed on the load side, and power is transmitted to all healthy sections except the faulted section by reclosing and reverse transmission. It also has a function to lock time X (minimum lock function), and if a power outage occurs during time X, it locks time X and prohibits the start of time X until the lock is released. For this reason, a minimum time limit of time X (for example, 10 seconds) is allowed, and delay operation times longer than this are not permitted.

[0031] Such information may be configured as part or all of the information stored and used by the distribution automation system 101, etc. In other words, an existing database in the distribution automation system 101, etc. may be used as the distribution system database 31. For example, if the type of each section switch DM, the allowable power transmission direction (power flow direction, which is power transmission from the power source side, and power source direction, which is power transmission from the load side), and the delay operation time (normal delay operation time) are set and stored in the distribution automation system 101, this information is used as the information in the distribution system database 31.

[0032] The support task 41 is a task program that adjusts the delay operation time, type, and allowable power transmission direction of the section switch DM as necessary when the power supply system is switched based on the power distribution system diagram, and in this embodiment, is started when an operation procedure according to the load switching schedule subject operation procedure manual is input. That is, the load switching schedule subject operation procedure manual indicates the procedure for turning on and off the section switch DM in the distribution automation system 101 when switching on and off, and the support task 41 is started by inputting a start command from the input unit 21 specifying the section switch DM to be switched on and off according to this procedure manual.

[0033] First, this support task 41 calculates the delay operation time of a predetermined section switch DM as the load-switching delay operation time so that if each section switch DM closes at the normal delay operation time according to the power supply route during load switching, and multiple section switches DM close at the same time, they will not close at the same time. That is, under normal conditions, the normal delay operation time of each section switch DM is set so that even if each section switch DM closes at the normal delay operation time, multiple section switches DM will not close at the same time (so that they close sequentially). However, if the power supply route changes due to load switching, and each section switch DM closes at the normal delay operation time, multiple section switches DM may close at the same time. In such cases, the normal delay operation time is adjusted to the load-switching delay operation time to prevent multiple section switches DM from closing at the same time.

[0034] Specifically, for example, in a distribution system under normal conditions as shown in Figure 2, there is a first power supply route R1 indicated by a solid line and a second power supply route R2 indicated by a dashed line, and the types of each section switch DM and the normal delay operation times are as follows:

[0035] First section switch DM1 F type, 10 seconds Second section switch DM2 C type, 10 seconds Third section switch DM3 C type, 10 seconds 4th section switch DM4 C type, 10 seconds 5th section switch DM5 F type, 20 seconds 6th section switch DM6 C type, 10 seconds 11th section switch DM11 C type, 10 seconds 12th section switch DM12 C type, 10 seconds 13th section switch DM14 C type, 10 seconds In this case, in the first power supply route R1 under normal conditions, as shown in the time table in Figure 3, even if each section switch DM closes during the normal delay operation time, multiple section switches DM do not close simultaneously. That is, the first section switch DM1 closes 10 seconds after the power supply side of the first section switch DM1 is charged, followed by the second section switch DM2 10 seconds later, and then the third section switch DM3 10 seconds later. After that, the fourth section switch DM4 closes 10 seconds later, the fifth section switch DM5 closes 20 seconds later, and the sixth section switch DM6 closes 10 seconds after the fifth section switch DM5 closes. The same is true for the second power supply route R2 under normal conditions.

[0036] On the other hand, if the tenth section switch DM10 is turned off and the eleventh section switch DM11 is turned on according to the operation procedure for the scheduled power transfer, the power transfer occurs to the third power feed route R3 indicated by the solid line and the fourth power feed route R4 indicated by the dashed line, as shown in Figure 4. In this case, if each section switch DM on the third power feed route R3 is closed within the normal delay operation time, multiple section switches DM will be closed simultaneously, as shown in the time table in Figure 5. That is, after the power supply side of the first section switch DM1 is charged, 20 seconds later, the second section switch DM2 and the eleventh section switch DM11 will be closed simultaneously, 30 seconds later, the third section switch DM3 and the twelfth section switch DM12 will be closed simultaneously, and 40 seconds later, the fourth section switch DM4 and the thirteenth section switch DM13 will be closed simultaneously.

[0037] For this reason, the delay operation time of a specific section switch DM (a section switch DM that needs adjustment) is changed or adjusted. For example, as shown in the time table in Figure 6, the delay operation time of the eleventh section switch DM11, i.e., the load-switching delay operation time, is determined to be 60 seconds. As a result, the eleventh section switch DM11 closes 60 seconds after the first section switch DM1 closes, that is, 70 seconds after the power supply side of the first section switch DM1 is charged. Next, the twelfth section switch DM12 closes 10 seconds later, and then the thirteenth section switch DM13 closes 10 seconds later. In this way, by adjusting only the delay operation time of the eleventh section switch DM11, multiple section switches DM do not close simultaneously even during load-switching. In other words, the section switches DM and their load-switching delay operation times to be adjusted are determined so that all section switches DM do not close simultaneously by adjusting the delay operation times of as few section switches DM as possible.

[0038] Second, if the type of a given section switch DM does not allow a switch-on-load delay time, the support task 41 determines a type that allows a switch-on-load delay time for this section switch DM. In other words, if the delay time has changed to the switch-on-load delay time and the normal type does not match this switch-on-load delay time, the support task 41 determines a compatible section switch DM type. For example, as described above, if 60 seconds is determined as the switch-on-load delay time for the 11th section switch DM11, and the normal type of the 11th section switch DM11 is type C, which allows a delay time of 10 seconds or less, the support task 41 determines type F, which allows a long delay time, as the type of the 11th section switch DM11, so that the switch-on-load delay time of 60 seconds is allowed and compatible.

[0039] Third, if there is a section switch DM whose power transmission direction according to the power supply route during load transfer does not match the set allowable power transmission direction, the support task 41 determines the allowable power transmission direction for this section switch DM. In other words, if the power supply route changes due to load transfer and the power transmission direction also changes, and as a result this power transmission direction does not match the allowable power transmission direction of a certain section switch DM, the support task 41 determines the allowable power transmission direction to be set for this section switch DM. For example, if the type of section switch DM is F-type and the allowable power transmission direction under normal conditions is the power flow direction, but the power transmission direction during load transfer is the power source direction, the support task 41 determines that the allowable power transmission direction during load transfer of this section switch DM is the power source direction.

[0040] Furthermore, if the delay time becomes longer as a result of a change in the power supply route due to a change in load, the support task 41 shortens the delay time and makes changes and adjustments to enable earlier power supply. For example, if the delay time of a certain section switch DM21 becomes 40 seconds due to a change in load, and the delay time of the following section switch DM22 becomes 10 seconds, the delay time of the section switch DM21 (delay time during load change) is calculated as 10 seconds, thereby enabling earlier power transmission.

[0041] The thus calculated load transfer delay operation time, model, and allowable power transmission direction are displayed as a DM time limit change procedure proposal together with the identification information of the corresponding section switch DM on the display unit 22 or transmitted to a predetermined terminal. Then, when the work manager or other person checks the DM time limit change procedure proposal and turns on an execute button or the like, the delay operation time, model, and allowable power transmission direction are automatically changed.

[0042] Here, any method or operation may be used to temporarily change the delay operation time, type, or allowable power transmission direction. For example, the delay operation time of the corresponding section switch DM in the distribution automation system 101 may be changed by inputting and setting the delay operation time during load transfer, inputting and setting the calculated type, or inputting and setting the calculated allowable power transmission direction. Furthermore, when inputting and setting the delay operation time, type, or allowable power transmission direction, the normal delay operation time, the original type, and the power transmission direction are stored, and when the load transfer is completed, the normal delay operation time, the original type, and the power transmission direction are automatically restored.

[0043] When the power supply route during load transfer and the normal delay operation time of each section switch DM (switch information) are input, the support task 41 uses a load transfer learning model 32 that has been machine-learned based on past performance data so that the load transfer delay operation time of a predetermined section switch DM is output so that multiple section switches DM do not perform a simultaneous closing operation. This load transfer learning model 32 is created by the learning task 42.

[0044] That is, the learning task 42 uses past performance data recorded and accumulated in the load transfer performance database 33 to create the load transfer learning model 32 using a known machine learning algorithm such as a neural network. This load transfer performance database 33 is a database in which performance data including the delay operation time, type, and allowable power transmission direction at the time of load transfer, which is adjusted by a power system expert or knowledgeable person (e.g., a work manager) so that multiple section switch DMs do not close simultaneously, is recorded and accumulated based on the input information, such as the power supply route at the time of load transfer, the normal delay operation time, normal type, and allowable power transmission direction of each section switch DM. The past performance data includes data created based on the actual power supply route at the time of load transfer, the normal delay operation time, normal type, and allowable power transmission direction of each section switch DM, and the delay operation time, type, and allowable power transmission direction at the time of load transfer actually adjusted by the expert, as well as data created through prior training, etc.

[0045] As shown in Figure 7, this learning task 42 uses machine learning and deep learning with a neural network to create a neural network based on the actual data recorded in the load transfer performance database 33. The neural network has, for example, the power supply route during load transfer and normal switch information of each section switch DM (such as delay operation time, type, and allowable power transmission direction) as an input layer, the delay operation time and type and allowable power transmission direction during load transfer as an output layer, and an analysis process from the input layer to the output layer as an intermediate layer. The learning task 42 then uses the actual data of the load transfer learning model 32 as learning data to learn various parameters in the intermediate layer. That is, the learning task 42 learns various parameters in the intermediate layer so that the delay operation time, type, and allowable power transmission direction during load transfer can be appropriately calculated based on the power supply route during load transfer and the normal switch information of each section switch DM.

[0046] As described above, according to this distribution transfer load support system 1, when a transfer load causes multiple section switches DM to close simultaneously under normal delay operation times, the delay operation time of a predetermined section switch DM is calculated as the transfer load delay operation time so that they do not close simultaneously. In other words, the delay operation time is automatically adjusted so that multiple section switches DM do not close simultaneously even when a transfer load occurs, which not only reduces the effort and time required for adjustment, but also makes it possible to properly adjust the delay operation time without omission.

[0047] Furthermore, if the type of a given section switch DM does not close with the load-switching delay operation time, a type that allows for a load-switching delay operation time is calculated for this section switch DM. In other words, for a section switch DM whose delay operation time needs to be adjusted or changed, a type that can close with the load-switching delay operation time is automatically calculated, which not only reduces the effort and time required to optimize or change the type of section switch DM, but also makes it possible to properly adjust the type without any omissions.

[0048] Furthermore, if there is a section switch DM whose power transmission direction due to the power supply route when the load is switched does not match the set allowable power transmission direction, the allowable power transmission direction is calculated for this section switch DM. In other words, if the power transmission direction changes when the load is switched and a certain section switch DM does not match this power transmission direction, the allowable power transmission direction that should be set for this section switch DM is automatically calculated. This not only reduces the effort and time required to optimize and change the power transmission direction of the section switch DM, but also makes it possible to properly adjust the power transmission direction without any omissions.

[0049] In this way, it is possible to easily and quickly optimize the section switch DM when a load is being switched.

[0050] Furthermore, since the machine-learned load switching learning model 32 is used to output the load switching delay operation time, type, and allowable power transmission direction of a specified section switch DM so that multiple section switches DM do not close at the same time, it becomes possible to determine a more appropriate load switching delay operation time, type, and allowable power transmission direction for a more appropriate section switch DM. As a result, it becomes possible to easily and quickly optimize the section switch DM when switching load.

[0051] Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and the present invention also includes design changes within the scope of the present invention. For example, in the above embodiment, the system diagram storage means and the time limit storage means are configured as a single power distribution system database 31, but they may each be configured as separate databases.

[0052] On the other hand, the above-described power distribution transfer load support system 1 may be configured by installing the following power distribution transfer load support program in a general-purpose computer. That is, the computer is made to function as a system diagram storage means (power distribution system database 31) storing a power distribution system diagram including the positions of a plurality of switches, a time limit storage means (power distribution system database 31) storing a normal delay operation time which is a delay operation time of each switch under normal conditions, and a calculation means (support task 41) for calculating the delay operation time of a predetermined switch as a load transfer delay operation time so that multiple switches do not close simultaneously when each switch is closed with the normal delay operation time according to the power supply route when the power supply system is transferred based on the power distribution system diagram. If the type of a specified switch does not allow a delay operation time during load transfer, the calculation means determines a type that allows a delay operation time during load transfer for this switch, and if there is a switch whose power transmission direction through the power supply route during load transfer does not match the set allowable power transmission direction, the calculation means determines the allowable power transmission direction for this switch.When the power supply route and the normal delay operation time of each switch are input, the calculation means uses a load transfer learning model 32 that has been machine-learned based on past performance data so that the delay operation time of a specified switch is output as the delay operation time during load transfer so that multiple switches do not close at the same time. [Explanation of symbols]

[0053] 1. Power distribution and load support system 3 Storage section 31 Power distribution system database (system diagram storage means, time-limited storage means) 32 Load Transfer Model 33 Load Transfer Performance Database 41 Support Task (Calculation Method) DM Section Switch (Switch)

Claims

1. The time from when the power supply side of the switch is charged until the switch is turned on is defined as the delay operation time. a system diagram storage means for storing a power distribution system diagram including the positions of a plurality of the switches; a time limit storage means for storing a normal delay operation time, which is a delay operation time of each switch during normal operation; a calculation means for calculating a delay operation time of a predetermined switch as a delay operation time during load transfer so that the multiple switches do not perform simultaneous closing operations when the switches are closed at the normal delay operation time according to the power supply route when the power supply system is switched based on the power distribution system diagram; Equipped with When the type of the predetermined switch does not allow the load transfer delay operation time, the calculation means determines a type that allows the load transfer delay operation time for the predetermined switch. A power distribution transfer load support system characterized by:

2. When there is a switch whose power transmission direction through the power supply route does not match the set allowable power transmission direction, the calculation means calculates the allowable power transmission direction for the switch.

2. The power distribution transfer load support system according to claim 1.

3. The calculation means uses a load transfer learning model that has been machine-learned based on past performance data so that, when the power supply route and the normal delay operation time of each switch are input, a delay operation time of a predetermined switch is output as a load transfer delay operation time so that multiple switches do not perform a closing operation simultaneously.

3. The power distribution transfer load support system according to claim 1 or 2.

4. The time from when the power supply side of the switch is charged until the switch is turned on is defined as the delay operation time. Computer, a system diagram storage means for storing a power distribution system diagram including the positions of a plurality of the switches; a time limit storage means for storing a normal delay operation time, which is a delay operation time of each switch during normal operation; a calculation means for calculating a delay operation time of a predetermined switch as a delay operation time during load transfer so that a plurality of switches do not perform simultaneous closing operations when each switch is closed at the normal delay operation time according to a power supply route when the power supply system is switched based on the power distribution system diagram; It functions as When the type of the predetermined switch does not allow the load transfer delay operation time, the calculation means determines a type that allows the load transfer delay operation time for the predetermined switch. A power distribution transfer load support program characterized by:

5. When there is a switch whose power transmission direction through the power supply route does not match the set allowable power transmission direction, the calculation means calculates the allowable power transmission direction for the switch.

5. The power distribution load support of claim 4.

6. The calculation means uses a load transfer learning model that has been machine-learned based on past performance data so that, when the power supply route and the normal delay operation time of each switch are input, a delay operation time of a predetermined switch is output as a load transfer delay operation time so that multiple switches do not perform a closing operation simultaneously.

6. The power distribution transfer load support program according to claim 4 or 5.

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