JP2021027623A - Plan formation supporting device and method - Google Patents

Abstract

To provide a plan formation supporting device and method capable of supporting formation of a system plan capable of guaranteeing reliability of an electric power system or economical efficiency of a power transmission/distribution company even in the case where an external environment is changed.SOLUTION: Based on countermeasure candidate information including an implementation content of a facility countermeasure which is possible to be executed in future on a present electric power system and environment condition information including variation parameters of an external environment, conditional system configuration information which is information of each system configuration which can be transient from a system configuration of the present electric power system is created and based on the countermeasure candidate information and the conditional system configuration information, a state transition model including all plan candidates executable during a plan target period is created as a plan model. Based on external environment estimation information including an estimate value of the external environment at every time point during the plan target period and the plan model information, plan candidate information including all the plan candidates executable during the plan target period is created, and an evaluation value for each plan candidate is calculated.SELECTED DRAWING: Figure 2

Description

The present invention relates to a plan formulation support device and a method, and is suitable for application to a grid plan formulation support system that supports the formulation of a grid plan for a grid configuration of an electric power system.

While there are concerns that the reliability of the power system will decline due to the aged deterioration of system equipment introduced in large quantities during the period of high economic growth and the expansion of the introduction of renewable energy power sources such as solar power, power transmission and distribution will occur due to the recent sluggish power demand. Business toll revenues are declining.

For this reason, it has become an issue for power transmission and distribution business operators to improve the efficiency of capital investment while ensuring the reliability of the power system, and plans for a highly reliable and economically rational power system configuration (hereinafter referred to as this). Is called a system plan).

For example, in Patent Document 1, equipment state information regarding the deterioration state of system equipment is acquired, the configuration of the power system is changed based on the equipment state information, and power flow information in the changed power system is obtained, and power flow information is obtained. Discloses a device that determines whether or not the changed power system is feasible based on the above and outputs the configuration of the power system determined to be feasible to the display unit.

Japanese Unexamined Patent Publication No. 2019-088106

By the way, in light of the recent expansion of the introduction of renewable energy power sources and sluggish power demand, the system plan that considers only the equipment status information regarding the deterioration status of grid equipment includes renewable energy power sources connected to the power system. When the demand for electric power changes, the reliability of the electric power system and the economic efficiency of the power transmission and distribution company cannot be guaranteed. It is necessary to formulate a system plan that considers not only so-called changes in the internal environment such as deterioration of system equipment over time, but also so-called changes in the external environment such as the expansion of the introduction of renewable energy power sources and the slump in power demand. The challenge is to formulate a grid plan that can ensure the reliability of the power system and the economic efficiency of the power transmission and distribution business operator even if the external environment changes.

The present invention has been made in consideration of the above points, and is a plan formulation support that can support the formulation of a grid plan that can guarantee the reliability of the power system and the economic efficiency of the power transmission and distribution business operator even when the external environment changes. It is intended to propose devices and methods.

In order to solve such a problem, in the present invention, in the plan formulation support device that supports the formulation of the system plan of the power system, a predetermined process is performed based on the storage device in which the program is stored and the program stored in the storage device. A processor that executes the above-mentioned measures is provided, and countermeasure candidate information including the implementation contents of equipment measures that the processor may execute in the future for the current power system and environmental condition information including fluctuation parameters of the external environment are provided. Based on the above, the first step of creating conditional system configuration information, which is information on each system configuration that can be transitioned from the current system configuration of the power system to which the permissible range of the external environment is given, and the countermeasures. Based on the candidate information and the conditional grid configuration information, a second step of creating a state transition model including all the system plan candidates that can be executed in the planning target period as a planning model, and the planning target period Based on the external environment assumption information including the assumed value of the external environment at each time point and the plan model information, the plan candidate information including all the system plan candidates that can be executed in the planning period is created, and the plan candidate information is created. The process including the third step of calculating the evaluation value for each candidate of the system plan is executed.

Further, in the present invention, it is a plan formulation support method executed in a plan formulation support device that supports the formulation of a system plan of an electric power system, and is a facility measure that may be implemented in the future for the current electric power system. Each system configuration that can transition from the current system configuration of the power system to which the allowable range of the external environment is given based on the countermeasure candidate information including the implementation contents and the environmental condition information including the fluctuation parameters of the external environment. The first step of creating the conditional system configuration information which is the information of the above, and all the candidates of the system plan that can be executed in the planning target period based on the countermeasure candidate information and the conditional system configuration information are included. The planning target period is based on the second step of creating a state transition model as a planning model, external environment assumption information including the assumed value of the external environment at each time point of the planning target period, and the planning model information. In addition to creating plan candidate information including all feasible candidates for the system plan, a third step of calculating the evaluation value for each candidate of the system plan is provided.

According to the plan formulation support device and method of the present invention, a system plan can be formulated in consideration of changes in the external environment.

According to the present invention, it is possible to realize a plan formulation support device and a method that can support the formulation of a system plan that can guarantee the reliability of the power system and the economic efficiency of the power transmission and distribution business operator even when the external environment changes.

It is a block diagram which shows the whole structure of the system plan formulation support system by this embodiment. It is a block diagram which shows the logical structure of a planning apparatus. It is a conceptual diagram which shows an example of the system structure of an electric power system. It is a conceptual diagram which shows an example of the system structure which may be taken by the execution of equipment measures. It is a figure which shows the structural example of a planning model. It is a figure which shows the configuration example of the system equipment table. It is a chart which shows the configuration example of the countermeasure candidate table. It is a figure which shows the configuration example of the external environment condition table. It is a figure which shows the structural example of the conditional system composition table. It is a chart which shows the composition example of a plan model data. It is a figure which shows the configuration example of the external environment assumption table. It is a figure which shows the structural example of the plan candidate table. It is a figure which shows the structural example of the evaluation value table. It is a flowchart which shows the processing procedure of the conditional system composition creation processing. It is a flowchart which shows the processing procedure of the planning model creation process. It is a flowchart which shows the processing procedure of the plan candidate creation evaluation process. It is a figure which shows the composition example of the system plan formulation support screen.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

(1) Configuration of system plan formulation support system according to this embodiment In Fig. 1, 1 shows the system plan formulation support system according to this embodiment as a whole. This system plan formulation support system 1 is a system that supports the formulation of a system plan, and is a planning device 2, an input / output device 3, a system equipment information management device 4, a system analysis device 5, an external environment information creation device 6, and planning information. A management device 7 is provided, and these are configured by being connected via a network 8.

The planning device 2 is a computer device that assists the user in formulating a system plan, and includes a central processing unit 11, a main storage unit 12, an auxiliary storage unit 13, and a communication unit 14 that are interconnected via an internal bus 10. It is composed of.

The central processing unit 11 is a processor that controls the operation of the entire planning device 2, and is composed of a CPU (Central Processing Unit) and the like. The main storage unit 12 is a memory used as a work memory of the central processing unit 11, and various programs and data are temporarily stored. As will be described later, the program held in the auxiliary storage unit 13 is loaded into the main storage unit 12 when the planning device 2 is started or when necessary, and the central processing unit 11 executes the program loaded in the main storage unit 12. , Various processes as a whole of the planning device 2 as described later are executed.

The auxiliary storage unit 13 is composed of, for example, a non-volatile large-capacity storage device such as a hard disk device or an SSD (Solid State Drive), and is used for holding various programs and data for a long period of time. System equipment data collection program 20, conditional system configuration creation program 21, planning model creation program 22, external environment assumption data collection program 23, plan candidate creation evaluation program 24, system equipment table 25, countermeasure candidate table 26, external environment, which will be described later. The condition table 27, the conditional system configuration table 28, the planning model data 29, the external environment assumption table 30, the planning candidate table 31, and the evaluation value table 32 are also stored and held in the auxiliary storage unit 13.

In the communication unit 14, the planning device 2 communicates with the input / output device 3, the system equipment information management device 4, the system analysis device 5, the external environment information creation device 6, and the planning information management device 7 via the network 8. It is an interface, and is composed of, for example, a NIC (Network Interface Card).

The input / output device 3 includes an input unit 41, an output unit 42, and a communication unit 43 connected via the internal bus 40.

The input unit 41 is a device for inputting information necessary for the user to formulate a system plan using the planning device 2, and is composed of, for example, a mouse and a keyboard. The output unit 42 is a display device that displays information necessary for the user to formulate a system plan using the planning device 2, and is composed of, for example, a liquid crystal display or an organic EL (Electro Luminescence) display.

The communication unit 43 allows the input / output device 3 to communicate with the planning device 2, the system equipment information management device 4, the system analysis device 5, the external environment information creation device 6, and the planning information management device 7 via the network 8. It is an interface and is composed of NIC and the like.

The system equipment information management device 4 is a computer device that stores system equipment information including information such as specifications and connection points of individual system equipment connected to or may be connected to the current power system. Further, the system analysis device 5 is a computer device having a function of calculating a power system power flow state, a reliability index, and the like in response to a request from the planning device 2 and transmitting the calculation result to the planning device 2.

The external environment information creation device 6 includes the estimated value of the increase / decrease rate of the amount of renewable energy introduced into the target power system at a plurality of future time points such as one year, two years, three years, and so on. It is a computer device having a function of creating external environment information including an estimated value of an increase / decrease rate of a load of the power system at these time points. The "increase / decrease rate" is an increase / decrease rate based on the present, and the same applies to the following. Further, the plan information management device 7 is a computer device that stores the plans and evaluation values created by the plan device 2.

(2) System plan formulation support function according to the present embodiment (2-1) Logical configuration of the planning device Next, the system plan formulation support function mounted on the planning device 2 of the system plan formulation support system 1 will be described. This system planning support function is not only for changes in the internal environment such as aging deterioration of the system equipment of the target power system, but also for the external environment such as the expansion of the amount of renewable energy introduced into the power system and the slump in power demand. It is a function that supports the formulation of a system plan that takes into account even changes in.

As a means for realizing such a system plan formulation support function, as shown in FIG. 1, the auxiliary storage unit 13 of the planning device 2 has a system equipment data collection program 20 and a conditional system configuration creation program 21 as programs. , Planning model creation program 22, external environment assumption data collection program 23, plan candidate creation evaluation program 24 are stored, and as data, system equipment table 25, countermeasure candidate table 26, external environment condition table 27, conditional system configuration table 28, The plan model data 29, the external environment assumption table 30, the plan candidate table 31, and the evaluation value table 32 are stored.

The grid equipment data collection program 20 collects grid equipment information such as specifications and connection points of individual grid equipment connected to or may be connected to the current power system from the grid equipment information management device 4. This is a program having a function of storing the collected system equipment information in the system equipment table 25.

Further, the conditional system configuration creation program 21 is currently registered in the countermeasure candidate table 26 by the user in advance using the system equipment information stored in the system equipment table 25 and the system plan formulation support screen 50 described later with reference to FIG. Information on some candidates for equipment measures that can be implemented for the power system in Japan (new installation, renewal, enhancement or removal of system equipment, hereinafter referred to as countermeasure candidates), and the system plan formulation support screen 50 All systems that may be taken by executing one or more countermeasure candidates registered in the countermeasure candidate table 26 based on the external environment condition information previously stored in the external environment condition table 27 by the user using It is a program that has a function to create a configuration.

For example, the target power system has a system configuration as shown in FIG. 3, and as shown in FIG. 7 described later, "removal of system equipment L1 (countermeasure M1)" and "removal of system equipment L3 (removal of system equipment L3)". Four types of countermeasure candidates are registered in the countermeasure candidate table 26: "countermeasure M2)", "enhancement of system equipment L3 (countermeasure M3)", and "new installation of system equipment L5 in parallel with system equipment L2 (countermeasure M4)". It is assumed that there is. In this case, the conditional system configuration creation program 21 may take the system configuration of the power system that may be obtained by executing one or more of these countermeasure candidates for the target power system. As shown in FIGS. 4A to 4L, 12 types of system configurations are created.

The system configuration S0 shown in FIG. 4A is a system configuration when no measures are taken, and the system configuration S1 shown in FIG. 4B is a countermeasure candidate for removing the system equipment L1. This is the system configuration when M1) is executed.

Further, the system configuration S2 shown in FIG. 4C is a system configuration when the countermeasure candidate (M2) for removing the system equipment L3 is executed, and the system configuration S3 shown in FIG. 4D is a countermeasure candidate for enhancing the system equipment L3. The system configuration when (M3) is executed, and the system configuration S4 shown in FIG. 4 (E) is the system configuration when the countermeasure candidate (M4) for newly installing the system equipment L5 is executed, which is shown in FIG. 4 (F). The system configuration S5 is a system configuration when the countermeasure candidate (M1) for removing the system equipment L1 and the countermeasure candidate (M2) for removing the system equipment L3 are executed.

Further, the system configuration S6 shown in FIG. 4 (G) is a system configuration when the countermeasure candidate (M1) for removing the system equipment L1 and the countermeasure candidate (M3) for enhancing the system equipment L3 are executed. The system configuration S7 shown in (H) is a system configuration when a countermeasure candidate (M1) for removing the system equipment L1 and a countermeasure candidate (M4) for newly installing the system equipment L5 are executed. Further, the system configuration S8 shown in FIG. 4 (I) is a system configuration when the countermeasure candidate (M2) for removing the system equipment L3 and the equipment countermeasure (M4) for newly installing the system equipment L5 are executed. The system configuration S9 shown in (J) is a system configuration when a countermeasure candidate (M3) for enhancing the system equipment L3 and a facility countermeasure (M4) for newly installing the system equipment L5 are executed.

Further, the system configuration S10 shown in FIG. 4 (K) is a system configuration when the system equipment L1 and the system equipment L3 are removed and the equipment measures (M1, M2 and M5) for newly installing the system equipment L5 are executed. The system configuration S11 shown in 4 (L) is a system configuration when the system equipment L1 is removed, the system equipment L3 is strengthened, and the equipment measures (M1, M3, and M4) for newly installing the system equipment L5 are executed. ..

Further, the conditional system configuration creation program 21 calculates the permissible range of the increase / decrease rate of the introduction amount of renewable energy and the permissible range of the increase / decrease rate of the load in each system configuration created in this way, and the calculation result is the corresponding system. It is stored in the conditional system configuration table 28 as conditional system configuration information in association with the configuration.

The plan model creation program 22 plans a predetermined period for executing countermeasures based on the countermeasure candidates stored in the countermeasure candidate table 26 and the conditional system configuration information stored in the conditional system configuration table 28. It is a program that has the function of creating a planning model that includes all systematic plans that can be executed within the target period.

For example, in the case of the above-described example with respect to FIGS. 3 and 4, the planning model creation program 22 represents the system configuration that may be taken by executing the countermeasure candidate with a node, and represents the executed equipment countermeasure with a branch. Create a state transition model as shown in. Then, the planning model creation program 22 stores the planning model data (hereinafter, this is referred to as planning model data) 29 created in this way in the auxiliary storage unit 13 (FIG. 1).

In addition, the external environment assumption data collection program 23 is the estimated value of the increase / decrease rate of the amount of renewable energy introduced into the target power system at multiple points in the future, such as one year, two years, three years, and so on. , A function to acquire the estimated value of the increase / decrease rate of the load of the power system at these time points from the external environment information creation device 6 and store the acquired these assumed values as the external environment assumption information in the external environment assumption table 30. It is a program to have.

The plan candidate creation evaluation program 24 is based on the countermeasure cost for each countermeasure candidate, the plan model data 29, and the external environment assumption information stored in the external environment assumption table 30, and all that can be executed within the plan target period. It is a program that has a function of creating each system plan as a plan candidate and calculating the cost required for its execution as an evaluation value for each created plan candidate. The plan candidate creation evaluation program 24 stores the information about each created plan candidate in the plan candidate table 31, and stores the calculated evaluation value for each plan candidate in the evaluation value table 32. Further, the plan candidate creation evaluation program 24 transmits these plan candidates and their evaluation values to the plan information management device 7. As a result, these plan candidates and their evaluation values are held in the plan information management device 7.

Further, the plan candidate creation evaluation program 24 creates a system plan formulation support screen 50, which will be described later with respect to FIG. 17 in which these plan candidates and their evaluation values are posted, and transmits the screen data to the output unit 42 of the input / output device 3. By doing so, these plan candidates and their evaluation values are displayed on the output unit 42.

On the other hand, the system equipment table 25 is a table for managing and holding system equipment information such as specifications and connection points of individual system equipment connected to or may be connected to the current power system. As shown in FIG. 6, the equipment ID column 25A, the connection point 1 column 25B, the connection point 2 column 25C, the equipment specification column 25D, the introduction date column 25E, and the cost model column 25F are provided. In the grid equipment table 25, one row corresponds to one grid equipment (L1 to L4 in FIG. 3) in the target power system. Note that FIG. 6 shows an example in which the system configuration of the target power system is the configuration shown in FIG.

Then, in the equipment ID column 25A, an identifier (equipment ID) unique to the system equipment assigned to the corresponding system equipment is stored, and the connection point 1 column 25B and the connection point 2 column 25C correspond to each other. The identifier (bus ID) of the bus (“bus1” to “bus3” in FIG. 3) to which one end side or the other end side of the system equipment is connected is stored. Further, the equipment specification column 25D is divided into a plurality of specification columns 25DA according to the equipment specification contents such as the installed capacity, and specific numerical values of the corresponding specifications of the system equipment corresponding to each specification column 25DA are displayed. It is stored.

Furthermore, the year and month when the corresponding system equipment was introduced is stored in the introduction date column 25E, and the model (cost model) for calculating the one-year maintenance cost of the corresponding system equipment is stored in the cost model column 25F. Is stored.

Therefore, in the case of the example of FIG. 6, for example, the system equipment with the equipment ID "L1" is connected between the two bus "bus1" and "bus3", respectively, and the equipment capacity is "100MW", the year of introduction. The month is shown to be "April 1970". Further, in FIG. 6, for each system equipment, the cost model is a mathematical model (“1.0x + 0.0”) in which the number of years since introduction (x) is multiplied by “1.0” and “0.0” is added to the multiplication result. It is shown that it is represented by ").

The countermeasure candidate table 26 is a countermeasure candidate that can be executed for the current power system registered in advance by the user via the input unit 41 (FIGS. 1 and 2) of the input / output device 3 (FIGS. 1 and 2). It is a table used to manage. As shown in FIG. 7, the countermeasure candidate table 26 includes a countermeasure ID column 26A, a target equipment column 26B, a countermeasure type column 26C, a countermeasure cost column 26D, a countermeasure deadline column 26E, and an exclusive constraint column 26F. In the countermeasure candidate table 26, one row corresponds to one feasible equipment countermeasure.

Then, in the countermeasure ID column 26A, an identifier (countermeasure ID) unique to the countermeasure candidate given to the corresponding countermeasure candidate is stored, and in the target equipment column 26B, the system equipment targeted in the corresponding countermeasure candidate. Equipment ID is stored.

Further, in the countermeasure type column 26C, the specific contents of the corresponding countermeasure candidate are stored. In the case of this embodiment, there are four types of specific contents of the countermeasure candidates: "new establishment", "renewal", "expansion", and "removal". Further, the countermeasure cost column 26D stores the cost required to execute the corresponding countermeasure candidate, and the countermeasure deadline column 26E stores the expiration date of the corresponding countermeasure candidate.

Further, in the exclusive constraint column 26F, the countermeasure IDs of other countermeasure candidates having an exclusive relationship with the corresponding countermeasure candidate are stored. For example, the countermeasure candidate "remove the system equipment L3" given the countermeasure ID "M2" and the countermeasure candidate "strengthen the system equipment L3" assigned the countermeasure ID "M3" are executed at the same time. Since the countermeasures have an exclusive relationship that cannot be achieved, "M3" is stored in the exclusive constraint column 26F of the countermeasure candidate "M2", and "M2" is stored in the exclusive constraint column 26F of the countermeasure candidate "M3".

Therefore, in the case of the example of FIG. 7, for example, the countermeasure candidate to which the countermeasure ID of "M1" is assigned "removes" the system equipment to which the equipment ID of "L1" is assigned, and is "100 k ¥". It is shown that there is no countermeasure candidate that cannot be executed at the same time among the other countermeasure candidates registered in the countermeasure candidate table 26 at that time when the countermeasure deadline is “t ≦ 2” (“-”). ing.

The external environment condition table 27 is a table that defines fluctuation parameters of the external environment. More specifically, the rate of increase / decrease in the amount of renewable energy introduced into the target power system and the rate of increase / decrease in the load in the power system. It is a table in which the combination is defined as an external environmental condition, and is configured to include a condition ID column 27A, a renewable energy introduction amount increase / decrease rate column 27B, and a load increase / decrease rate column 27C, as shown in FIG. In the external environment condition table 27, one row corresponds to one external environment condition.

Then, in the condition ID column 27A, an identifier (condition ID) unique to the external environmental condition given to the corresponding external environmental condition is stored. Further, the renewable energy introduction amount increase / decrease rate column 27B stores an example of the increase / decrease rate of the renewable energy introduction amount into the target power system, and the load increase / decrease rate column 27C stores the load increase / decrease in the power system. An example of the rate is stored. In FIG. 27, the rate of increase / decrease in the amount of renewable energy introduced is in the range of + 0% to + 20% in increments of 5%, and the rate of increase / decrease in the load is in the range of −10% to + 10% in increments of 5%.

Therefore, in the case of the example of FIG. 8, for example, in the external environmental condition to which the condition ID "E8" is given, the rate of increase / decrease in the amount of renewable energy introduced into the target power system is "+ 15%", and the power thereof. The condition is that the rate of increase / decrease in the load in the grid is "+ 5%", and the external environmental condition given the condition ID "E24" is the rate of increase / decrease in the amount of renewable energy introduced into the target power system. At "+ 20%", it is shown that the condition is that the rate of increase / decrease in the load in the power system is "-10%".

Further, the conditional system configuration table 28 holds the system configuration created and calculated by the conditional system configuration creation program 21 that may be obtained by executing the countermeasure candidate, and the permissible range of the external environment in the system configuration. As shown in FIG. 9, the table is configured to include a system configuration ID column 28A, an execution countermeasure ID column 28B, and an external environment permissible range column 28C. In the conditional system configuration table 28, one row corresponds to one system configuration created by the conditional system configuration creation program 21.

An identifier (system configuration ID) unique to the system configuration assigned to the corresponding system configuration is stored in the system configuration ID column 28A, and the current power system of the target power system is stored in the execution countermeasure ID column 28B. The countermeasure IDs of all the countermeasure candidates (see FIG. 7) to be executed in order to make the system configuration of the above system the corresponding system configuration are stored.

In FIG. 9, "{M1}", "{M1, M2}" and "{M1, M2, M4}" stored in the execution countermeasure ID column 28B are the current system configurations of the target power system. The countermeasure candidates to be implemented in order to make the system configuration corresponding to are the countermeasure candidate "M1" and the two countermeasure candidates "M1" and "M2" in FIG. 7, respectively, or "M1", "M2" and "M2". It means that there are three countermeasure candidates of "M4", and "{}" means that none of the countermeasure candidates is executed for the current system configuration of the target power system.

Further, in the external environment permissible range column 28C, the range (allowable range) of the increase / decrease rate of the amount of renewable energy introduced into the power system of the system configuration, which is allowed for the corresponding system configuration, and the load in the power system. The range of increase / decrease rate (allowable range) is stored.

Therefore, in the case of the example of FIG. 9, for example, the system configuration to which the system configuration ID of "S2" is assigned is a countermeasure to which the countermeasure ID of "M2" is assigned to the current system configuration of the target power system. It can be realized by implementing the countermeasures of the candidates, and the system configuration can be realized by the rate of increase / decrease PV of the amount of renewable energy introduced into the target power system is "PV ≤ + 0%" and the rate of increase / decrease of the load of the power system. It is shown that "Load ≤ + 0%" is within the permissible range.

The planning model data 29 is data including the configuration information of the state transition model described above for FIG. 5 including all the planning candidates that can be executed during the planning target period, and as shown in FIG. 10, the transition source node ID column 29A. It has a table configuration including a transition destination node ID column 29B, an execution countermeasure ID column 29C, and an external environment allowable range column 29D. In this table, one row in the transition source node ID column 29A corresponds to one node (system configuration) that is the transition source in the planning model of FIG.

Then, in the transition source node ID column 29A, among the identifiers (node IDs) given to each node in the planning model of FIG. 5, the nodes that are the transition sources to other nodes (hereinafter, these are the transition sources). The node ID of (called a node) is stored.

Further, the transition destination node ID column 29B is divided so as to correspond to each node capable of transitioning from the corresponding transition source node (hereinafter, these are referred to as transition destination nodes), and each transition destination node ID column 29B is divided into each. The node ID of the corresponding transition destination node is stored.

Further, an execution countermeasure ID column 29C is provided corresponding to each transition destination node ID column 29B, and these execution countermeasure ID columns 29C correspond to the transition destination node from the system configuration associated with the corresponding transition source node. The countermeasure IDs of all the countermeasure candidates (see FIG. 5) to be executed when transitioning to the attached system configuration are stored.

Further, the external environment allowable range column 29D is provided corresponding to each transition source node ID column 29A, and the external environment allowable range column 29D is allowed in the system configuration associated with the corresponding transition source node. The range of increase / decrease rate of the amount of renewable energy introduced into the power system of the system configuration (allowable range) and the range of increase / decrease rate of load in the power system (allowable range) are stored.

Therefore, in the case of the example of FIG. 10, for example, as the transition destination of the node with the node ID "S0", there are six nodes to which the node IDs "S0" to "S6" are assigned, respectively, and the node is called "S0". Transitioning to the system configuration associated with the node with the node ID "S1" by executing the countermeasure candidate with the countermeasure ID "M1" assigned to the system configuration associated with the node with the node ID. It has been shown that

Further, in FIG. 10, the permissible range of the increase / decrease rate PV of the introduction amount of renewable energy in the system configuration of the node with the node ID “S0” is “PV ≦ + 5%”, and the increase / decrease rate Load of the load in the system configuration It is also shown that the permissible range is "Load ≤ + 5%".

The external environment assumption table 30 shows the estimated value of the increase / decrease rate of the amount of renewable energy introduced into the target power system at a plurality of future time points collected from the external environment information creation device 6 by the external environment assumption data collection program 23. , A table used to hold the estimated value of the increase / decrease rate of the load of the power system at these time points, and as shown in FIG. 11, the environment ID column 30A and the estimated value column 30B for each time point are provided. Will be done. The external environment assumption table 30 includes a row LN1 corresponding to renewable energy and a row LN2 corresponding to a load.

Then, in the environment ID column 30A, an identifier (environment ID) unique to the external environment assigned to the corresponding external environment (renewable energy or load) is stored. Further, the estimated value column 30B for each time point is divided into a plurality of assumed value columns 30BA to 30BD associated with each of a plurality of time-series time points in the future (t = 1 to 4 in FIG. 11). The estimated value of the increase / decrease rate of the amount of renewable energy introduced into the target power system at the time corresponding to each of the assumed value columns 30BA to 30BD (in the case of line LN1), or the increase / decrease of the load in the power system. The estimated value of the rate (in the case of row LN2) is stored.

Therefore, in the case of the example of FIG. 11, the rate of increase / decrease in the amount of renewable energy introduced at each of the future “t = 1”, “t = 2”, “t = 3” and “t = 4” time points is assumed. The values are "+ 0%", "+ 5%", "+ 10%" and "+ 10%", respectively, and the assumed values of the increase / decrease rate of the load applied at this time are "-5%", "-5%", respectively. It is shown to be "+ 0%" and "+ 0%".

The plan candidate table 31 is a table calculated by the plan candidate creation evaluation program 24 and used to hold information on all the plan candidates that can be executed during the plan target period. As shown in FIG. 12, the plan candidate table 31 is a plan. It is configured to include an ID column 31A and a system configuration change column 31B. In the plan candidate table 31, one row corresponds to one plan candidate calculated by the plan candidate creation evaluation program 24.

Then, the plan ID column 31A stores an identifier (plan candidate ID) unique to the plan candidate given to the corresponding plan candidate, and the system configuration change column 31B is the current state when the corresponding plan candidate is executed. The system configuration IDs (see FIG. 9) of the system configuration of the target power system at the time points of t0 (t = 0), t1 (t = 1), t2 (t = 2), ... Are stored side by side. ..

Therefore, in the case of the example of FIG. 12, the current system configuration of the target power system is "S0", and when a plan candidate to which the plan ID "Plan2" is assigned is executed, this system configuration is set to the time. It is shown that as the process progresses from t1, t2, t3, and t4, the system configuration is sequentially changed to the system configuration IDs of "S0", "S1", "S6", and "S11", respectively. ..

The evaluation value table 32 is for managing the cost required to execute each plan candidate registered in the plan candidate table 31 and the maintenance cost (maintenance cost) of the power system after executing the plan candidate. As shown in FIG. 13, the table includes a plan ID column 32A, a new construction cost column 32B, a renewal cost column 32C, an expansion cost column 32D, a retirement cost column 32E, and a maintenance cost column 32F. .. In the evaluation value table 32, one row corresponds to one plan candidate registered in the plan candidate table 31.

Then, the plan ID of the corresponding plan candidate is stored in the plan ID column 32A. Further, in the new construction cost column 32B, the renewal cost column 32C, the expansion cost column 32D, and the retirement cost column 32E, the costs required to newly install, renew, reinforce, or dispose of the system equipment when executing the corresponding plan candidates, respectively. Each is stored. Further, the maintenance cost column 32F stores the cost required for one year to maintain the final system configuration after executing the corresponding plan candidate.

Therefore, in the case of the example of FIG. 13, for example, for a plan candidate with a plan ID of "Plan1", the cost required to newly install, renew, reinforce, or remove the system equipment when executing the plan candidate is "0". , "0", "400", "100", and it is shown that the annual maintenance cost of the target power system after the execution of the plan candidate is "561".

(3) Various processes related to the system plan formulation support function Next, the specific processing contents of various processes executed in the planning apparatus in relation to the system plan formulation support function according to the above-described embodiment will be described. In the following, the processing subject of various processes will be described as a "program", but it goes without saying that the central processing unit 11 (FIG. 1) actually executes the processing based on the "program".

(3-1) Processing of Conditional System Configuration Creation Program As described above, the conditional system configuration creation program 21 (FIG. 2) is targeted by executing one or more countermeasure candidates registered in the countermeasure candidate table 26. In addition to creating all the grid configurations that the power system can take, calculate the permissible range of the increase / decrease rate of the amount of renewable energy introduced and the permissible range of the increase / decrease rate of the load, respectively, and correspond to the calculation results. It is stored in the conditional system configuration table 28 (FIG. 9) as conditional system configuration data in association with the system configuration.

FIG. 14 shows a specific flow of such a series of processes (hereinafter, this is referred to as a conditional system configuration creation process) executed by the conditional system configuration creation program 21. When the user operates the input unit 41 (FIG. 1) of the input / output device 3 (FIG. 1) to instruct the execution of the system plan creation support process, the conditional system configuration creation program 21 has the conditional system configuration shown in FIG. The creation process is started, and first, all combinations of countermeasure candidates satisfying a predetermined constraint condition such as an exclusive constraint (hereinafter, this is referred to as a countermeasure set) are generated by referring to the countermeasure candidate table 26 (S1). At this time, the conditional system configuration creation program 21 assigns a serial number starting from 0 to each created countermeasure set as an identification number.

For example, in the case of the examples of FIGS. 3 to 13, considering that "M2" and "M3" are exclusive countermeasure candidates, the countermeasure set includes {}, {M1}, {M2}, {M3}. , {M4}, {M1, M2}, {M1, M3}, {M1, M4}, {M2, M4}, {M3, M4}, {M1, M2, M4}, {M1, M3, M4} A total of 12 countermeasure sets will be generated.

Subsequently, the conditional system configuration creation program 21 sets the variable i to the initial value (0) (S2), selects the i-th identification number countermeasure set i from the countermeasure sets generated in step S1, and selects the countermeasure set i. The system configuration after the equipment countermeasures is generated when all the countermeasure candidates included in the countermeasure set i are executed in the grid configuration of the target power system in which the grid equipment data is registered in the grid equipment table 25 (FIG. 6) ( S3).

For example, the countermeasure set generated in step S1 is {}, {M1}, {M2}, {M3}, {M4}, {M1, M2}, {M1, M3}, {M1, M4}, {M2, If M4}, {M3, M4}, {M1, M2, M4}, {M1, M3, M4}, and the i-th countermeasure set i is {}, the system configuration S0 of the power system is {. } To generate the system configuration when the countermeasure set i is executed. Since the countermeasure set i called {} does not include any countermeasure candidate, the system configuration after executing the countermeasure set i related to the system configuration S0 is the same as the original system configuration S0.

Next, the conditional system configuration creation program 21 sets the variable j to the initial value (0) (S4), and the external environment condition Ej (j = 0,1) registered in the external environment condition table 27 (FIG. 8). , ...) Is selected from the j-th external environmental condition Ej, and a system cross section is generated when the j-th external environmental condition Ej is applied to the system configuration generated in step S3 (S5).

In the case of the examples of FIGS. 3 to 13, since the increase / decrease rate of the introduction amount of the renewable energy indicated by the external environmental condition E0 is “+ 0%” and the increase / decrease rate of the load is “+ 0%”, the conditional system configuration creation program. In FIG. 21, the amount of renewable energy introduced connected to the system configuration S0 in FIG. 3 is "+ 0%" with respect to the current value of t0 (t = 0) at the reference time, and the load is with respect to the value at the reference time. To generate a system cross section set to "+ 0%".

Further, the conditional system configuration creation program 21 transmits the system cross-section data generated in step S5 to the system analysis device 5 (FIGS. 1 and 2) (S6), and thereafter, the system analysis device 5 is based on this data. It waits for receiving the calculation result regarding the tidal current state and the reliability index of the system cross section transmitted from (S7).

Then, when the conditional system configuration creation program 21 receives the calculation result, it finishes executing the processes of steps S5 to S7 for all the external environmental conditions Ej registered in the external environmental condition table 27 (FIG. 8). It is determined whether or not it is (S8).

When the conditional system configuration creation program 21 obtains a negative result in this judgment, it increments (increments by 1) the value of the variable j (S9), then returns to step S5, and then obtains a positive result in step S8. The process of steps S5 to S9 is repeated until.

Then, when the conditional system configuration creation program 21 eventually obtains a positive result in step S8 by completing the processes of steps S5 to S7 for all the external environmental conditions Ej registered in the external environmental condition table 27, The process proceeds to step S10.

In step S10, the conditional system configuration creation program 21 describes the current state and reliability of the system cross section given by the system analyzer in step S6 for the system configuration (system configuration generated in the latest step S3) at that time. Based on the calculation result related to the index, the allowable range of the increase / decrease rate of the amount of renewable energy introduced for the system configuration and the allowable range of the increase / decrease rate of the load are calculated respectively, and the calculation result is associated with the system configuration and the condition. It is registered in the attached system configuration table 28 (FIG. 9) (S11).

For example, the system configuration S0 generated in the immediately preceding step S3 at this stage is E0, E1, E5, E6, E15, E16, E20 among the external environmental conditions registered in the external environmental condition table 27 of FIG. , E21 is reflected in the system cross section, when the threshold value of a predetermined reliability index is satisfied, as shown in FIG. 9, the permissible range of the increase / decrease rate PV of the introduction amount of the renewable energy of the system configuration and the load. The rate of increase / decrease of Load is calculated to be "+ 5%" or less. Thus, the conditional system configuration creation program 21 stores the calculation result in the conditional system configuration table 28 in association with the system configuration S0.

Next, the conditional system configuration creation program 21 determines whether or not the processes of steps S2 to S11 have been executed for all the countermeasure sets generated in step S1 (S12). Then, when the conditional system configuration creation program 21 obtains a negative result in this determination, the value of the variable i is incremented (S13), then returns to step S3, and then steps S3 to step S3 until a positive result is obtained in step S12. The process of S13 is repeated.

In the above example, by this iterative process, {}, {M1}, {M2}, {M3}, {M4}, {M1, M2}, {M1, M3}, {M1, M4}, {M2, For each countermeasure set of M4}, {M3, M4}, {M1, M2, M4}, {M1, M3, M4}, all the countermeasure candidates included in the countermeasure set are included in the system configuration of the target power system. The grid configurations for each of these grid configurations are generated, and the permissible range of the increase / decrease rate of the amount of renewable energy introduced and the permissible range of the load increase / decrease rate for each of these grid configurations are calculated, and the calculation results correspond to each other. It will be stored in the conditional system configuration table 28 in association with the system configuration.

Then, when the conditional system configuration creation program 21 obtains an affirmative result in step S12 by completing the processes of steps S3 to S11 for all the countermeasure sets generated in step S1, the conditional system configuration process is performed. finish.

(3-2) Processing of the planning model creation program As described above, the planning model creation program 22 (FIG. 2) contains the countermeasure candidates stored in the countermeasure candidate table 26 (FIG. 7) and the conditional system configuration table 28 (FIG. 7). Based on the conditional grid configuration data stored in FIG. 9), a planning model including all the plan candidates that can be executed during the planning target period is created.

FIG. 15 shows a specific processing content of such a series of processing (hereinafter, this is referred to as a planning model creation processing) executed by the planning model creation program 22. When the conditional system configuration creation program 21 finishes the conditional system configuration process described above for FIG. 14, the planning model creation program 22 starts the planning model creation process shown in FIG. 15.

Then, the planning model creation program 22 first generates all the countermeasure sets satisfying the predetermined constraints based on each countermeasure candidate stored in the countermeasure candidate table 26 (S20). The "predetermined constraint" here is, for example, a cost constraint or a constraint relating to an exclusive relationship between countermeasure candidates.

For example, in the examples of FIGS. 3 to 13, if there is a constraint that the total cost of countermeasures should be "800 k \ (800000 yen)" or less in addition to the constraint on the exclusive relationship between countermeasure candidates, a planning model is created. In step S20, the program 22 has a total of seven countermeasure sets of {}, {M1}, {M2}, {M3}, {M4}, {M1, M2}, {M1, M3} as such countermeasure sets. To generate.

Subsequently, the planning model creation program 22 generates all the nodes constituting the planning model, and assigns a serial number starting from 0 to each created countermeasure set as an identification number (S21). Since each node constituting the planning model is associated with the conditional system configuration in a one-to-one relationship, in the case of the examples of FIGS. 3 to 13, the planning model creation program 22 is {}, {M1}. , {M2}, {M3}, {M4}, {M1, M2}, {M1, M3}, {M1, M4}, {M2, M4}, {M3, M4}, {M1, M2, M4} , {M1, M3, M4}, a total of 12 types of nodes will be generated. At this time, the planning model creation program 22 assigns a serial number starting from 0 to each generated node as an identification number.

Next, the planning model creation program 22 sets the variable n to the initial value (0) (S22). Further, the planning model creation program 22 selects the nth node from the nodes generated in step S21, and based on the countermeasure set satisfying a predetermined constraint, the selected node (the nth node, hereinafter, this is All the nodes that can be transitioned are extracted from (referred to as a selection node), and each of the extracted nodes and the selection node are connected by a branch (S23). The branch connecting the nodes is associated with any countermeasure set satisfying a predetermined constraint on a one-to-one basis.

For example, when n = 0, the planning model creation program 22 selects node S0 as the 0th node, and node S0, node S1, node S2, node S3, node S4, as nodes that can transition from this node S0. Seven nodes of node S5 and node S6 are extracted. It is possible to transition to the node S7 by executing the countermeasure set {M1, M4} for the node S0, but the countermeasure set {M1, M4} is not included in the countermeasure set generated in step S20. , The transition from node S0 to node S7 is not possible. The same applies to the transition from node S0 to nodes S8 to S11.

After that, the planning model creation program 22 determines whether or not the processing of step S23 has been executed for all the nodes generated in step S21 (S24). Then, when the planning model creation program 22 obtains a negative result in this determination, the value of the variable n is incremented (S25), and then the process returns to step S23. Further, the planning model creation program 22 repeats the processes of steps S23 to S25 until a positive result is obtained in step S24.

Then, when the planning model creation program 22 obtains an affirmative result in step S24 by completing the processing of step S23 for all the nodes generated in step S, the planning model creation program 22 receives a positive result for each node constituting the planning model. The permissible range of the increase / decrease rate of the introduction amount of the renewable energy assigned to the corresponding system configuration and the permissible range of the increase / decrease rate of the load are given as the attributes of the node (S26).

Further, the planning model creation program 22 stores the data of the planning model created as described above in the auxiliary storage unit 13 in the above-described format with respect to FIG. 10 (S27), and then ends the planning model creation process.

(3-3) Processing of Plan Candidate Creation Evaluation Program As described above, the plan candidate creation evaluation program 24 creates all the plan candidates that can be executed during the plan target period and registers them in the plan candidate table 31 (FIG. 12). At the same time, the evaluation values for each of these plan candidates are calculated, and the calculation results are registered in the evaluation value table 32 (FIG. 13).

FIG. 16 shows a specific processing content of such a series of processes (hereinafter, this is referred to as a plan candidate creation evaluation process) executed by the plan candidate creation evaluation program 24. The plan candidate creation evaluation program 24 sets the node corresponding to the system candidate that has not executed the equipment measures as the initial node, sequentially searches for the nodes that can be transitioned from the initial node based on the plan model, and for each transition destination node. The countermeasure cost and maintenance cost are calculated as evaluation values, and all feasible plan candidates and the evaluation values of the plan candidates are acquired.

In practice, the plan candidate creation evaluation program 24 starts the plan candidate creation evaluation process shown in FIG. 16 when the plan model creation program 22 finishes the above-mentioned plan model creation process for FIG. 15. Then, the plan candidate creation evaluation program 24 first refers to the plan model data 29 (FIG. 10), and among the nodes constituting the plan model, selects the node Sn corresponding to the current system configuration of the target power system. Select (S30). Specifically, this node Sn is the node S0 in FIG.

Subsequently, the plan candidate creation evaluation program 24 sets the variable t and the variable n to the initial values (S31). The initial value of the variable t is "1", and the initial value of the variable n is "0".

Next, the plan candidate creation evaluation program 24 includes the assumed value of the external environment (increase / decrease rate of the amount of renewable energy introduced and the increase / decrease rate of the load) at the time point t registered in the external environment assumption table 30 and the planning model. One node Sm that can be transitioned from the node Sn is selected based on the permissible range of the external environment of each node in the data 29 (S32).

Further, the plan candidate creation evaluation program 24 refers to the countermeasure candidate table 26, and includes various countermeasure costs (new construction cost, renewal cost, enhancement cost, and retirement cost) in the node Sm selected in step S32, and one year of the node Sm. The maintenance cost of the above is calculated (S33).

Subsequently, the plan candidate creation evaluation program 24 refers to the plan model data 29 and the external environment assumption table 30 to determine whether or not there is a node capable of transitioning from the node Sm at the time point t to the time point (t + 1). (S34).

When the plan candidate creation evaluation program 24 obtains a negative result in this determination, the variable t is incremented, the value of the variable n is updated to m (S35), and then the process returns to step S32. Then, the plan candidate creation evaluation program 24 repeats the processes of steps S32 to S35 until a positive result is obtained in step S34. One plan candidate is a node Sm sequentially selected in step S32 in this iterative process, arranged in order from the one with the smallest time point t, starting from the current system configuration of the target power system.

Then, when the plan candidate creation evaluation program 24 eventually obtains an affirmative result in the judgment of step S34, it assigns a plan ID to one plan candidate obtained by the iterative processing of steps S32 to S35, and then assigns the plan candidate. The plan candidate table 31 is stored in association with the plan ID, and the countermeasure cost and maintenance cost finally calculated in step S33 for the plan candidate are stored in the evaluation value table 32 (S36).

Subsequently, the plan candidate creation evaluation program 24 determines whether or not the processes of steps S32 to S36 have been executed for all the nodes that can be transitioned from the node Sn (S37). Then, when the plan candidate creation evaluation program 24 obtains a negative result in this determination, it returns the time point to the time point (t = t-1) immediately before the last time point in the iterative processing of steps S32 to S35 (S38). , Return to step S34.

Then, when the plan candidate creation evaluation program 24 eventually obtains an affirmative result in the judgment of step S37 by completing the creation of all the plan candidates, the data of all the plan candidates registered in the plan candidate table 31 at that time and the data of all the plan candidates are added. At that time, the evaluation value data for these plan candidates registered in the evaluation value table 32 are transmitted to the plan information management device 7 (S39).

Further, the plan candidate creation evaluation program 24 described above based on the data of all the plan candidates registered in the plan candidate table 31 and the evaluation value data for these plan candidates registered in the evaluation value table 32 at that time. By creating the processing result screen of the above and transmitting the screen data of the processing result screen to the output unit 42 (FIG. 2) of the input / output device 3 (FIG. 2), this processing result screen is displayed on the output unit 42 ( S40). Then, the plan candidate creation evaluation program 24 ends the plan candidate creation evaluation process after this.

(4) Configuration of System Plan Formulation Support Screen FIG. 17 shows a configuration example of the system plan formulation support screen 50 described above. The system plan formulation support screen 50 includes a parameter setting unit 51, an external environment display unit 52, a plan model display unit 53, and a plan candidate display unit 54.

The parameter setting unit 51 is a field for the user to set parameters necessary for causing the planning device 2 (FIG. 1) to execute the above-mentioned system plan formulation support process, and is a planning target period setting area 60 and a countermeasure candidate setting area. It includes 61, an external environment condition setting area 62, and a plan creation button 63.

The planning target period setting area 60 is an area for designating the above-mentioned planning target period, and includes a text box 60A. Then, the user can specify one or a plurality of desired numerical values in the text box 60A as a desired time point by using the input unit 41 (FIG. 1) of the input / output device 3 (FIG. 1), whereby the desired time point can be specified. The planning period can be set.

Further, the countermeasure candidate setting area 61 is an area for setting the countermeasure candidates used for the system plan formulation support process, and the countermeasure candidate setting table 61A having the same form as the countermeasure candidate table 26 described above is displayed in FIG. 7. .. The countermeasure candidate setting table 61A can be edited by clicking the detailed setting button 61B, so that the user can set the countermeasure candidate desired by using the countermeasure candidate setting table 61A. The countermeasure candidate data of each countermeasure candidate set at this time is registered in the countermeasure candidate table 26.

Further, the external environment condition setting area 62 is an area for setting the external environment conditions used for the system plan formulation support process, and is the external environment condition setting table 62A having the same form as the above-mentioned external environment condition table 27 with respect to FIG. Is displayed. The external environment condition setting table 62A can be edited by clicking the detailed setting button 62B, so that the user can set the external environment condition desired by using the external environment condition setting table 62A. .. The external environment condition data of each external environment condition set at this time is registered in the external environment condition table 27.

Then, the user sets the plan target period, each countermeasure candidate, and each external environmental condition as described above, and then clicks the plan creation button 63 to set the plan target period, each countermeasure candidate, and each external environmental condition. The system planning support process used can be started by the planning device 2.

On the other hand, the external environment display unit 52 displays the external environment (here, the rate of increase / decrease in the amount of renewable energy introduced and the rate of increase / decrease in the load) at each time point specified by the user using the planning target period setting area 60 of the parameter setting unit 51. ) Is displayed in graph format. It should be noted that these assumed values are read from the external environment assumption table 30.

Further, in the plan model display unit 53, the planning device 2 executes the above-mentioned system plan formulation support process under each condition of the plan target period, the countermeasure candidate, and the external environment condition set by the user in the parameter setting unit 51. The planning model obtained by is displayed.

Further, the plan candidate display unit 54 is provided with a selection plan candidate display field 54A and a plan candidate detailed display area 54B. Then, on the system plan formulation support screen 50, by clicking the pull-down button 54C displayed on the right side of the selection plan candidate display field 54A, all the plan candidates obtained by executing the system plan formulation support process. A pull-down menu (not shown) on which the plan ID is posted can be displayed.

Further, by selecting a desired plan candidate from the plan candidates posted on this pull-down menu, the details of the plan candidate of the plan ID selected at that time can be displayed in the plan candidate detail display area 54B. At this time, the selected plan ID is displayed in the selection plan candidate display field 54A.

Further, in the plan candidate detailed display area 54B, as details of the plan candidate of the plan ID selected as described above, what kind of countermeasure (newly installed, what kind of measure (newly installed,) for which system equipment (L1 to L5 in the figure) at what timing. It is displayed in a predetermined format whether to renew, enhance or retire.

(5) Effect of the present embodiment As described above, the planning device 2 of the system planning support system 1 of the present embodiment can transition from the current power system system configuration to which the permissible range of the external environment is given. Create all the system configurations, and based on the information of these system configurations and the information of each countermeasure candidate, create a state transition model including all the plan candidates that can be executed in the planning target period as a planning model. Based on the planning model and the estimated values of the external environment (renewable energy introduction amount and load) at each point in the planning period, all the plan candidates that can be executed in the planning period and the evaluation of each plan candidate. Calculate the value and each.

Therefore, according to this planning device 2, it is possible to formulate a system plan that also considers changes in the external environment, thus ensuring the reliability of the power system and the economic efficiency of the power transmission and distribution business operator even if the external environment changes. It can support the formulation of possible system plans.

(6) Other Embodiments In the above-described embodiment, the case where the amount of renewable energy introduced into the power system and the load in the power system are applied as the external environment has been described. The invention is not limited to this, and other external environments may be applied in place of or in addition to these.

Further, in the above-described embodiment, the case where the input / output device 3, the system equipment information management device 4, the system analysis device 5, and the external environment information creation device 6 are provided separately from the planning device 2 has been described. The present invention is not limited to this, and even if all or part of the functions of the input / output device 3, the system equipment information management device 4, the system analysis device 5, and the external environment information creation device 6 are mounted on the planning device 2. Good.

Further, in the above-described embodiment, the case where the system plan formulation support screen 50 is configured as shown in FIG. 17 has been described, but the present invention is not limited to this, and various screen configurations are widely applied. be able to.

The present invention can be widely applied to various planning support systems that support the formulation of system plans for the grid configuration of electric power systems.

1 ... System planning support system, 2 ... Planning device, 3 ... Input / output device, 4 ... System equipment information management device, 5 ... System analysis device, 6 ... External environment information creation device, 7 ... Planning information management device, 11 ... Central processing unit, 20 ... System equipment data collection program, 21 ... Conditional system configuration creation program, 22 ... Planning model creation program, 23 ... External environment assumption data collection program, 24 …… Plan candidate creation evaluation program, 25 …… System equipment table, 26 …… Countermeasure candidate table, 27 …… External environment condition table, 28 …… Conditional system configuration table, 29 …… Plan model data, 30 …… External Environmental assumption table, 31 ... plan candidate table, 32 ... evaluation value table, 50 ... system plan formulation support screen.

Claims (10)

In the planning support device that supports the formulation of the grid plan of the electric power system
The storage device where the program is stored and
A processor that executes a predetermined process based on the program stored in the storage device is provided.
The processor
The permissible range of the external environment is given based on the countermeasure candidate information including the implementation contents of the equipment measures that may be implemented in the future for the current power system and the environmental condition information including the fluctuation parameters of the external environment. The first step of creating conditional system configuration information, which is information on each system configuration that can be transitioned from the current system configuration of the power system, and
A second step of creating a state transition model including all the system plan candidates that can be executed in the planning target period as a planning model based on the countermeasure candidate information and the conditional system configuration information.
Plan candidate information including all the systematic plan candidates that can be executed in the planning period based on the external environment assumption information including the assumed value of the external environment at each time point in the planning target period and the planning model information. A plan formulation support device characterized in that a process including a third step of calculating an evaluation value for each candidate of the system plan is executed. In the first step, the processor
Create countermeasure set information, which is a set of the equipment measures that satisfy the predetermined first constraint,
Create the system configuration when the equipment measures included in the countermeasure set information are executed for the current power system.
In the created system configuration, a system cross section is created when the value of the external environment is changed based on the environmental condition information.
Calculate the reliability index of each of the created system cross sections,
The permissible range of the external environment in the system configuration created based on the calculated reliability index is calculated.
The planning support device according to claim 1, wherein the calculated allowable range of the external environment is given to the corresponding system configuration. In the second step, the processor
Create countermeasure set information, which is a set of the equipment measures that satisfy the predetermined second constraint,
For each of the system configurations included in the conditional system configuration information, nodes corresponding to the system configuration in a one-to-one relationship are created.
The nodes that can be transitioned by executing the equipment countermeasures included in the countermeasure set information are connected by a branch.
The planning support device according to claim 1, wherein the allowable range of the external environment included in the conditional system configuration information is given to the node. In the third step, the processor
Among the plan model information, the node corresponding to the system candidate for which the equipment countermeasure is not executed is set as the initial node, and the node capable of transitioning from the initial node is sequentially searched based on the plan model information.
The countermeasure cost and the maintenance cost are calculated as the evaluation values for each of the transition destination nodes.
The planning support device according to claim 3, wherein all feasible candidates for the system plan and the evaluation values of the candidates are acquired. The external environment is
The planning support device according to claim 1, wherein the amount of renewable energy introduced into the power system and the load of the power system. It is a plan formulation support method executed in a plan formulation support device that supports the formulation of a grid plan for an electric power system.
The permissible range of the external environment is given based on the countermeasure candidate information including the implementation contents of the equipment measures that may be implemented in the future for the current power system and the environmental condition information including the fluctuation parameters of the external environment. The first step of creating conditional system configuration information, which is information on each system configuration that can be transitioned from the current system configuration of the power system, and
A second step of creating a state transition model including all the system plan candidates that can be executed in the planning target period as a planning model based on the countermeasure candidate information and the conditional system configuration information.
A plan candidate including all the system plan candidates that can be executed in the plan target period based on the external environment assumption information including the assumed value of the external environment at each time point in the plan target period and the plan model information. A planning support method characterized in that it includes a third step of creating information and calculating an evaluation value for each candidate of the system plan. In the second step,
Create countermeasure set information, which is a set of the equipment measures that satisfy the predetermined first constraint,
Create the system configuration when the equipment measures included in the countermeasure set information are executed for the current power system.
In the created system configuration, a system cross section is created when the value of the external environment is changed based on the environmental condition information.
Calculate the reliability index of each of the created system cross sections,
The permissible range of the external environment in the system configuration created based on the calculated reliability index is calculated.
The planning support method according to claim 6, wherein the calculated allowable range of the external environment is given to the corresponding system configuration. In the second step,
Create countermeasure set information, which is a set of the equipment measures that satisfy the predetermined second constraint,
For each of the system configurations included in the conditional system configuration information, nodes corresponding to the system configuration in a one-to-one relationship are created.
The nodes that can be transitioned by executing the equipment countermeasures included in the countermeasure set information are connected by a branch.
The planning support method according to claim 6, wherein the allowable range of the external environment included in the conditional system configuration information is given to the node. In the third step,
Among the plan model information, the node corresponding to the system candidate for which the equipment countermeasure is not executed is set as the initial node, and the node capable of transitioning from the initial node is sequentially searched based on the plan model information.
The countermeasure cost and the maintenance cost are calculated as the evaluation values for each of the transition destination nodes.
The planning support method according to claim 8, wherein all feasible candidates for the systematic plan and the evaluation values of the candidates are acquired. The external environment is
The planning support method according to claim 6, wherein the amount of renewable energy introduced into the power system and the load on the power system.

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