JP7210911B2 - Connection determination device, connection determination method, program and management device - Google Patents

Description

The present invention relates to a connection determination device, a connection determination method, and a program.

Conventionally, a system for controlling power equipment connected to a power system is known (see, for example, Patent Documents 1 and 2).
Patent Document 1 WO2016-157577 Patent Document 2 Japanese Patent Laid-Open No. 2007-108526

When connecting new power equipment to the power system, it is preferable to be able to efficiently determine whether or not the constraint conditions such as the capacity of the transmission line are satisfied.

In order to solve the above problems, a first aspect of the present invention provides a connection determination device for determining whether or not new power equipment can be connected to a power system. The connection determination device may include a facility information acquisition unit that acquires facility information including position information of the new power facility. The connection determination device includes a system information acquisition unit that acquires system model information, which is model information of the power system before the new power equipment is connected, and includes position information of a plurality of interconnection points to which the power equipment can be connected. you can The connection determination device determines, for at least one interconnection point selected according to the position information of the new power equipment and the position information of a plurality of interconnection points, a virtual image of when the new power equipment is connected to the interconnection point The model information may be calculated based on the facility information and the system model information, and the constraint determination unit may be provided to determine whether or not the virtual model information satisfies a predetermined constraint condition.

When the new power equipment is connected to each of the two or more interconnection points selected according to the position information of the new power equipment and the position information of the plurality of interconnection points, the constraint determination unit of virtual model information may be calculated. The constraint determination unit may determine whether or not each piece of virtual model information satisfies the constraint. The restriction determination unit may extract all interconnection points that satisfy the restriction conditions among the two or more interconnection points.

The connection determination device may include a topography information acquisition unit that acquires topography information of an area including the position of the new power equipment. The constraint determination unit may select interconnection points based on topographical information.

The grid model information may include information about the installed capacity of transmission lines connected to the interconnection point. The constraint determination unit may determine whether or not the power flowing through each transmission line in the virtual model information satisfies the constraint condition according to the installed capacity.

The connection determination device may include a system information storage unit that stores system model information. The connection determination device may include a system information update unit that updates the system model information stored in the system information storage unit when information about the operation status of equipment included in the power system is acquired.

The connection determination device may include a system information storage unit that stores system model information. The connection determination device updates the system model information stored in the system information storage unit to the system model information in which the new power equipment is added, on the condition that the connection of the new power equipment to the power system is authenticated. An information update unit may be provided.

A second aspect of the present invention provides a connection determination method for determining, by a computer, whether or not new power equipment can be connected to a power system. The connectivity determination method may include a facility information acquisition step of acquiring facility information including location information of the new power facility. The connection determination method includes a system information acquisition step of acquiring system model information, which is model information of the power system before the new power equipment is connected, and includes position information of a plurality of interconnection points to which the power equipment can be connected. you can The connection determination method calculates, for at least one interconnection point, virtual model information when new power equipment is connected to the interconnection point based on the equipment information and the system model information, and the virtual model information is determined in advance. A constraint determination step may be provided to determine whether the constraint is satisfied.

A third aspect of the present invention provides a program for causing a computer to execute the connection determination method according to the second aspect.

It should be noted that the above summary of the invention does not list all the necessary features of the invention. Subcombinations of these feature groups can also be inventions.

1 is a block diagram showing an example of a connection determination device 100 according to one embodiment of the present invention; FIG. FIG. 3 is a diagram showing an example of location information of new power equipment 122 and a plurality of interconnection points 124; FIG. 2 is a diagram showing an example of a virtual model 200 when a new power facility 122 is connected to an interconnection point 124; 3 is a diagram showing an example of a virtual model 300; FIG. 6 is an example of a candidate list of interconnection points 124 (interconnection points in FIG. 5 ) to which the new power equipment 122 is to be selected, selected by the constraint determination unit 106 . FIG. 5 is a diagram showing another configuration example of the connection determination device 100; It is a figure which shows the one part stage of the connection determination method which determines whether the new electric power equipment 122 is connectable to an electric power system by a computer. It is a figure which shows an example of the management apparatus 802 which manages an electric power system. An example computer 2200 is shown in which aspects of the present invention may be embodied in whole or in part.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. Also, not all combinations of features described in the embodiments are essential for the solution of the invention.

FIG. 1 is a block diagram showing an example of a connection determination device 100 according to one embodiment of the invention. The connection determination device 100 determines whether or not new power equipment can be connected to the power system. Power equipment is equipment that generates, consumes, or stores electric power, such as power generation equipment, load equipment, or power storage equipment (secondary battery, power storage device, or electric vehicle). Examples of new power generation facilities include solar power generation facilities and wind power generation facilities using renewable energy. In this example, the power system is a system including multiple power transmission and distribution facilities, multiple power generation facilities, and multiple load facilities. A power system may comprise one or more power storage facilities. In this specification, power transmission and distribution equipment, power generation equipment, load equipment, and power storage equipment may be simply referred to as equipment. Transmission and distribution facilities include transmission lines, transformers, and the like. The power system may include facilities such as thermal power plants or nuclear power plants.

The connection determination device 100 includes a facility information acquisition unit 102 , a system information acquisition unit 104 and a constraint determination unit 106 . The facility information acquisition unit 102 acquires facility information related to power facilities newly connected to the power system. The facility information includes at least location information of the power facility. The positional information of power equipment is information specifying the position of the power equipment. The location information in this specification may include one or more of information such as the address of the facility, latitude and longitude, and coordinates on a predetermined map. However, the position information is not limited to these pieces of information.

The facility information may include information indicating electrical characteristics of the power facility. Electrical characteristics may include the rated capacity of the power plant. For example, if the power equipment is a power generation equipment, the rated capacity is the maximum power (W) output by the power generation equipment. When the power equipment is load equipment, the rated capacity is the maximum power (W) consumed by the load equipment. The electrical characteristics may include information about the voltage of power output or consumed by the power equipment, and may include information about the frequency of the power. The electrical characteristics may also include active power and reactive power information in the power plant. Electrical properties may include other information.

The facility information acquisition unit 102 may acquire facility information from information input by a business operator or the like who intends to connect the power facility to the power system. The equipment information acquisition unit 102 may acquire the electrical characteristics of the power equipment from a measuring device that measures the electrical characteristics of the power equipment.

The system information acquisition unit 104 acquires system model information of the power system before connecting the new power equipment. The system model information includes position information of a plurality of interconnection points to which power equipment can be connected. A connection point is a point in the power system to which new power equipment can be connected. The interconnection point may be set in advance by an administrator or the like of the power system. An interconnection point may have an existing connection device to which a transmission line from the new power facility can be connected. As an example, the interconnection point may be a substation, a steel tower over which a power transmission line is laid, or an iron pole over which a power transmission line is laid.

The system model information may include information modeling each of a plurality of power transmission and distribution facilities such as transmission lines and transformers, a plurality of power generation facilities, and a plurality of load facilities included in the power system. The system model information may include at least one of location information, electrical connection relationships, electrical characteristics, and constraints of each piece of equipment. The electrical characteristics of the transmission and distribution facility may include the impedance of the transmission and distribution facility. The system model information may include information indicating the line type and length of each transmission line. The system information acquisition unit 104 may calculate the impedance of each transmission line from the line type and length of each transmission line. Information indicating the impedance per unit length may be registered in advance in the system information acquisition unit 104 for each type of transmission line.

Constraints for power transmission and distribution facilities such as power transmission lines include the installed capacity of power transmission and distribution facilities such as power transmission lines. The facility capacity indicates, for example, the maximum value of power that can be supplied to power transmission and distribution facilities. The facility capacity may be the limit of electric power at which the power transmission and distribution facility is not thermally destroyed by the current flowing through the power transmission and distribution facility.

Constraints may include electrical constraints on at least one of synchronization stability, voltage stability and frequency stability for each facility in addition to facility capacity. Synchronous stability is an index that indicates that power equipment can maintain synchronous operation and operate stably even when the state of the power system fluctuates (for example, when one of the equipment fails). Voltage stability is an index that indicates that the voltage in each facility can be stably maintained even when the state of the power system fluctuates. Frequency stability is an index that indicates that the frequency of voltage and current in each facility can be stably maintained even when the state of the power system fluctuates.

Constraint determination unit 106 determines, for at least one interconnection point selected according to the position information of the new power equipment and the position information of a plurality of interconnection points, when the new power equipment is connected to the interconnection point. Calculate virtual model information. The constraint determination unit 106 may calculate the straight-line distance between the new power equipment and each interconnection point based on each piece of position information, and select the interconnection point according to the straight-line distance. The constraint determination unit 106 may select a predetermined number of interconnecting points in order from the shortest linear distance. The constraint determination unit 106 calculates virtual model information based on the facility information acquired by the facility information acquisition unit 102 and the system model information acquired by the system information acquisition unit 104 . The constraint determination unit 106 may calculate virtual model information for each selected interconnection point.

The constraint determination unit 106 may calculate virtual model information for two or more interconnection points, and determine whether each piece of virtual model information satisfies a constraint condition. The restriction determination unit 106 may extract all interconnection points that satisfy the restriction conditions from among the two or more interconnection points. The constraint determination unit 106 may present the extracted interconnection points to the operator of the new power equipment or the like. The constraint determination unit 106 may have a display unit that displays information about the extracted interconnection points, and may have a transmission unit that transmits data about the extracted interconnection points. With such a configuration, the constraint determination unit 106 can provide choices of interconnection points to which new power equipment can be connected.

The constraint determination unit 106 performs power flow calculation based on the virtual model information, and calculates the power flowing through each node of the power system, the voltage and current of each node, and the like. Power may include active power and reactive power. Voltages and currents may contain magnitude, phase and frequency information. In addition, the virtual model information may include information such as active power and reactive power in each power generation facility, power consumed by each load facility, and impedance in each power transmission and distribution facility. The virtual model information may include information indicating the past operation status of each power facility. The virtual model information may include information indicating a future operation plan for each power facility. For power flow calculation, for example, the L method of the Central Research Institute of Electric Power Industry can be used, but the method of power flow calculation is not limited to this.

The constraint determination unit 106 determines whether or not the virtual model information satisfies the constraint based on the power, voltage and current of each node. The constraint determination unit 106 may determine whether or not the power transmitted through each transmission line satisfies a constraint condition according to the installed capacity of each transmission line. For example, the constraint determination unit 106 calculates the usable capacity by subtracting a predetermined margin from the installed capacity of each transmission line. The constraint determination unit 106 may determine whether or not the power flowing through each transmission line is within the usable capacity. The constraint determination unit 106 may determine that the new power equipment can be connected to the interconnection point when the virtual model information satisfies the constraint. The constraint determination unit 106 may present the determination result to the operator of the new power equipment or the like. The constraint determination unit 106 may have a display unit that displays information regarding the determination result, and may have a transmission unit that transmits data regarding the determination result.

The connection determination device 100 may further include a system information storage unit 108 and a system information update unit 110 . The system information storage unit 108 stores system model information regarding the current power system. The system information storage unit 108 may store system model information of the power system for each area. The system information update unit 110 updates the system model information stored in the system information storage unit 108 when information about the operation status of equipment included in the power system is acquired. For example, the system information update unit 110 may update the system model information when newly acquiring the operation plan of each piece of equipment. Further, the system information update unit 110 may update the system model information when new equipment is added to the power system or when equipment is removed from the power system. The system information update unit 110 may acquire the current or past operating status of each piece of equipment. The system information update unit 110 may update the system model information according to the operating status of each piece of equipment.

The connection determination device 100 may further include a terrain information acquisition unit 112 . The geographic information acquisition unit 112 acquires geographic information of an area including the position of the new power equipment. The terrain information acquisition unit 112 may store the terrain information in advance, or may acquire the terrain information from an external database. The terrain information is stored in association with the position information. Topographical information includes, for example, elevation at each point in the area, difference in elevation between points, presence or absence of rivers, presence or absence of buildings, height of buildings, whether the area has restrictions on installation of wiring facilities such as power lines, etc. whether or not, and other information that can affect the ease of new installation of wiring equipment. Topographic information may include information about the cost of installing power lines at each point.

The constraint determination unit 106 may select two or more interconnection points based on topographical information of an area including the location of the new power equipment. The terrain information may be terrain information of a range including the positions of two or more interconnection points. The constraint determination unit 106 may select the interconnection point based on topographical information of the area between the position of the new power equipment and the position of each interconnection point. As an example, the constraint determination unit 106 may exclude the interconnection point from the selection candidates when a predetermined terrain exists between the new power equipment and the interconnection point. As a more specific example, the constraint determination unit 106 determines that there is a river or the like between the new power facility and the interconnection point, or that there is an area where installation of power transmission and distribution facilities is restricted. If so, the interconnection point may be excluded from the selection candidates.

The constraint determination unit 106 may determine whether or not all interconnection points within a predetermined distance from the new power facility can be connected, and rank the connectable interconnection points from a predetermined viewpoint. Such aspects may include straight-line distance from new power installations. Such aspects may include the total length of transmission lines to be provided from the new power installation to the interconnection point. For example, if there is an area where it is difficult to install power transmission and distribution facilities between the location of new power facilities and the location of each interconnection point, and it is necessary to detour around the area and install power transmission and distribution facilities, is longer than the straight line distance between the new power plant and the interconnection point.

FIG. 2 is a diagram showing an example of position information of the new power equipment 122 and the plurality of interconnection points 124. As shown in FIG. In FIG. 2, the new power equipment 122 and the interconnection point 124 are indicated by circles. In addition, in FIG. 2, the positions of the new power equipment 122 and the interconnection point 124 are displayed superimposed on the terrain information 120 . The terrain information 120 in FIG. 2 may include the above-described information in addition to the position of the river 126 and the position of the road 128 .

The constraint determination unit 106 may select all interconnection points 124 existing within a predetermined distance from the new power equipment 122 as candidates for connecting the new power equipment 122 . The constraint determination unit 106 may determine whether or not the interconnection point 124 included in the first region 130 within the first distance from the new power equipment 122 can be connected to the new power equipment 122 . If the interconnection point 124 to which the new power equipment 122 can be connected does not exist in the first area 130, the constraint determination unit 106 determines that the distance from the new power equipment 122 is within a second distance greater than the first distance. 2, it may be determined whether or not the new power equipment 122 is connectable. According to this example, the interconnection point 124 as a connection candidate is selected using the position information of the new power equipment 122 . Therefore, virtual model information can be generated efficiently.

FIG. 3 is a diagram showing an example of a virtual model 200 when the new power equipment 122 is connected to the interconnection point 124. As shown in FIG. The power system in this example includes multiple power generation facilities 202 , multiple transmission lines 208 , multiple transformers 206 and multiple interconnection points 124 . The tie point 124 in this example is connected to the transmission line 208 . As described above, the interconnection point 124 is a steel tower or the like to which a transmission line is wired.

The new power plant 122 in this example includes a power plant 212 , such as a photovoltaic power plant, and a transformer 207 . The power system of this example is a special high voltage system in which the voltage in the transmission line 208 is 22 kV or more. The electric power system may include an inter-area connector 230 that connects the extra high voltage systems for each area. At least one transformer 206 may be connected to a high voltage system or a low voltage system having a lower voltage than the extra high voltage system. The power generation facility 202 in this example is a power plant such as a thermal power plant. A transformer 206 is a transformer installed at a substation.

The system model information before connecting the new power equipment 122 includes information indicating the electrical characteristics of each facility included in the power system, the length of the transmission line 208, and the position of the interconnection point 124 on the transmission line 208. OK. The electrical characteristics of each facility include the active power P and reactive power Q of the power generation facility 202, the impedance Z and transformation ratio of each transformer, and the impedance Z and installed capacity of each transmission line 208, as described above. good.

When generating virtual model information including the new power equipment 122 , the constraint determination unit 106 acquires the equipment information of the new power equipment 122 . The facility information includes electrical characteristics of each device included in the new power facility 122 . The facility information in this example includes the rated capacity and rated voltage of the power generation facility 212, the impedance Z of the transformer 207, and the impedance Z of the transmission line 209 that connects the new power facility 122 to the interconnection point 124. .

The constraint determination unit 106 generates virtual model information of the power system with the new power equipment 122 connected to the interconnection point 124-s selected as a candidate for connecting the new power equipment 122 . In this example, the ends 225-1 and 225-2 are the ends of the transmission line 208 where the connection point 124-s is provided. The constraint determination unit 106 of this example determines the impedance Z _5-1 of the transmission line 208 from the end 225-1 to the interconnection point 124-s and the transmission line from the interconnection point 124-s to the end 225-2. 208 impedance Z _5-2 is calculated. Impedance Z _5-1 and impedance Z _5-2 can be calculated, for example, by proportionally dividing impedance Z ₅ of transmission line 208 according to the position of interconnection point 124 on transmission line 208 .

Constraint determination unit 106 calculates the power flow at each node of the power system based on the virtual model information including the calculated impedance Z _5-1 and impedance Z _5-2 . The constraint determination unit 106 determines whether or not the power flow at each node satisfies a predetermined constraint condition. For example, the constraint determination unit 106 determines whether or not the power flow in the power transmission line 208 (that is, the power flowing through the power transmission line 208) satisfies a constraint condition according to the installed capacity of the power transmission line 208 or the like. The constraint determination unit 106 may determine whether or not the power flow in the power transmission line 208 is large compared to the usable capacity that secures a predetermined margin with respect to the installed capacity.

Since the constraint determination unit 106 of this example generates the virtual model information using the position information of the interconnection point 124, it is possible to accurately calculate the impedance of the transmission line 208 to which the new power equipment 122 is connected. Therefore, it is possible to accurately calculate the power flow of each node and accurately determine whether or not the constraint is satisfied.

FIG. 4 is a diagram showing an example of the virtual model 300. As shown in FIG. The power system in this example includes multiple transmission lines 308 , multiple loads 310 , multiple transformers 306 and multiple interconnection points 124 . The tie point 124 in this example is connected to the transmission line 308 .

The new power plant 122 in this example includes a power plant 312 , such as a photovoltaic power plant, and a transformer 307 . The power system in this example is a high or low voltage system with a voltage on transmission line 308 of less than 22 kV. At least one transformer 306 may be connected to an extra high voltage system or high voltage system. At least one transformer 306 in this example is a pole transformer. At least one load 310 may be an electrical appliance in the building that is powered.

In this example, similarly to the example of FIG. 3, virtual model information is generated based on the system model information before connecting the new power equipment 122 and the equipment information of the new power equipment 122 . The grid model information may include information indicating the electrical characteristics of each facility included in the power grid, the length of the transmission line 308 , and the location of the interconnection point 124 on the transmission line 308 .

The electrical characteristics of each installation may include the impedance Z and transformation ratio of each transformer, and the impedance Z and installation capacity of each transmission line 308, as described above. The electrical characteristics of each facility may include past performance values of power consumption of each load 310 .

When generating virtual model information including the new power equipment 122 , the constraint determination unit 106 acquires the equipment information of the new power equipment 122 . The facility information includes electrical characteristics of each device included in the new power facility 122 . The facility information in this example includes the rated capacity of the power generation facility 312 , the impedance Z of the transformer 307 , and the impedance Z of the transmission line 309 connecting the new power facility 122 to the interconnection point 124 .

The constraint determination unit 106 generates virtual model information of the power system with the new power equipment 122 connected to the interconnection point 124-s selected as a candidate for connecting the new power equipment 122 . In this example, the ends 325-1 and 325-2 are the ends of the power transmission line 308 where the connection point 124-s is provided. As in the example of FIG. 3, the constraint determination unit 106 of this example determines the impedance Z 14-1 of the transmission line 308 from the end 325-1 to the interconnection point 124-s and the impedance Z _14-1 from the interconnection point 124-s to the The impedance Z _14-2 of transmission line 208 up to section 325-2 is calculated.

Constraint determination unit 106 calculates the power flow at each node of the power system based on the virtual model information including the calculated impedance Z _14-1 and impedance Z _14-2 . Constraint determination unit 106 determines whether or not the power flow at each node satisfies a predetermined constraint condition, as in the example of FIG.

FIG. 5 is an example of a candidate list of interconnection points 124 (interconnection points in FIG. 5) for connecting new power equipment 122 selected by the constraint determination unit 106 . The constraint determination unit 106 of this example determines that the straight line distance from the new power equipment 122 is within a predetermined range (within 10 km in the example of FIG. 5) and the power voltage is a predetermined value (66 kV in the example of FIG. 5). A certain interconnection point 124 is extracted.

The constraint determination unit 106 may rank and present the selected interconnection points 124 based on predetermined characteristics. In the example of FIG. 5, each interconnection point 124 is ranked according to the capacity that can be interconnected. The size of the capacity that can be interconnected means that when new power equipment 122 is connected to each interconnection point 124, the power flowing through all the power transmission and distribution equipment in the power system can be used according to the equipment capacity of each equipment. It is the capacity of the largest new power facility 122 that does not exceed capacity. The interconnection capacity may be calculated by power flow calculation based on the virtual model information, and may be set in advance for each interconnection point 124 in the system model information.

The constraint determination unit 106 may create a list by attaching information about predetermined characteristics to each interconnection point 124 . The list in FIG. 5 shows the distance between each interconnection point 124 and the new power equipment 122, the suppression conditions imposed on the new power equipment 122 when connecting the new power equipment 122 to each interconnection point 124, and the power factor conditions. , and includes special notes. The suppression condition is a condition for suppressing the power flowing from the new power equipment 122 to the power system when a failure occurs in any of the facilities included in the power system. The special items are information indicating facilities and the like that are additionally required in order to connect the new power facility 122 to the interconnection point 124 . By generating such a list, it is possible to provide the operator of the new power equipment 122 with information for selecting the interconnection point 124 .

The constraint determination unit 106 may determine whether or not each of the selected interconnection points 124 satisfies a predetermined constraint condition based on the virtual model information to which the new power equipment 122 is connected. The constraint determination unit 106 may extract only the interconnection points 124 that satisfy the constraint and generate a list. In another example, the constraint determination unit 106 determines whether or not the interconnection point 124 specified by the business operator or the like satisfies a predetermined constraint condition based on the virtual model information to which the new power equipment 122 is connected. may

FIG. 6 is a diagram showing another configuration example of the connection determination device 100. As shown in FIG. The connection determination device 100 of this example further includes an additional authentication unit 114 in addition to the connection determination device 100 described with reference to FIGS. The additional authentication unit 114 authenticates whether or not the new power equipment 122 applied for by the business operator or the like may be connected to the interconnection point 124 specified by the business operator or the like. The constraint determination unit 106 of this example generates virtual model information in which the new power equipment 122 is connected to the specified interconnection point 124, and determines whether or not predetermined constraint conditions are satisfied. The addition authentication unit 114 authenticates the addition of the new power equipment 122 to the power system based on the determination result of the constraint determination unit 106 .

The system information update unit 110 updates the system model information stored in the system information storage unit 108 to the system model to which the new power equipment 122 is added on condition that the connection of the new power equipment 122 to the power system is authenticated. Update to information. The system information update unit 110 updates the system model information based on the equipment information of the new power equipment 122 and the position information of the interconnection point 124 . Through such processing, the system model information can be updated at any time, and the accuracy of the system model information can be improved.

FIG. 7 is a diagram showing some stages of a connection determination method for determining whether or not the new power equipment 122 can be connected to the power system by a computer. The connection determination method of this example includes a facility information acquisition step S702, a system information acquisition step S704, a terrain information acquisition step S706, and a constraint determination step S708. The facility information acquisition step S702, the system information acquisition step S704, and the terrain information acquisition step S706 may be executed in any order.

In the facility information acquisition step S702, facility information including position information of the new power facility 122 is acquired. The processing in the equipment information acquisition step S702 is the same as the processing in the equipment information acquisition unit 102 described with reference to FIGS.

In the system information acquisition step S704, system model information, which is model information of the power system before the new power equipment 122 is connected and includes position information of a plurality of interconnection points 124 to which the power equipment can be connected, is acquired. The processing in the system information acquisition step S704 is the same as the processing in the system information acquisition unit 104 described with reference to FIGS. 1 to 6. FIG.

In the topography information acquisition step S706, topography information for a predetermined area including the place where the new power equipment 122 is to be installed is acquired. The processing in the terrain information acquisition step S706 is the same as the processing in the terrain information acquisition unit 112 described with reference to FIGS.

In the constraint determination step S708, for at least one interconnection point 124, virtual model information when the new power equipment 122 is connected to the interconnection point 124 is calculated based on the terrain information, equipment information, and system model information. . Also, it is determined whether or not the virtual model information satisfies a predetermined constraint condition. The processing in the constraint determination step S708 is the same as the processing in the constraint determination step S708 described with reference to FIGS.

FIG. 8 is a diagram showing an example of a management device 802 that manages the power system. The management device 802 includes the connection determination device 100 described with reference to FIGS. 1 to 7. FIG. The management device 802 in this example is a server connectable to the network 804 . Management device 802 can communicate with multiple terminals 806 and multiple power equipment 808 via network 804 . Each terminal 806 is associated with a power facility 808 . Each terminal 806 can communicate with power equipment 808 . Terminal 806 may control the functionality of at least some of power equipment 808 .

When adding a new power facility 808 , the operator of the power facility 808 accesses the management device 802 via the terminal 806 . The terminal 806 transmits the facility information of the power facility 808 described in FIGS. 1 to 7 to the management device 802 .

The management device 802 extracts one or more interconnection points 124 to which the power equipment 808 can be connected based on the received equipment information. The management device 802 may extract interconnection points 124 that satisfy predetermined constraints. The management device 802 notifies the terminal 806 of information about the extracted interconnection point 124 .

When the terminal 806 wishes to connect to any of the received interconnection points 124 , the terminal 806 designates the interconnection point 124 and notifies the management device 802 . The management device 802 may approve the connection of the power equipment 808 in response to the notification. In another example, the management device 802 may approve the connection after confirming again whether the constraint is satisfied when the power facility 808 is connected to the interconnection point 124 . In this case, the connection point system model information is updated, it is possible to check again whether the constraints are satisfied. When the management device 802 approves the connection of the power equipment 808 to the interconnection point 124, the management device 802 updates the system model information.

If there is no interconnection point 124 to which the power equipment 808 can be connected, the management device 802 may notify the terminal 806 to that effect. In another example, management device 802 may notify terminal 806 of the conditions for connecting power equipment 808 for each tie point 124 . For example, the management device 802 may notify the terminal 806 of the maximum capacity condition of the connectable power equipment 808 for each interconnection point 124 . In addition, the management device 802 may notify the terminal 806 of a condition for suppressing power flowing from the power facility 808 to the power system in the event of a failure of the power system for each interconnection point 124 .

When the terminal 806 agrees with the conditions notified from the management device 802 , it specifies one of the interconnection points 124 and applies for connection of the power equipment 808 . Management device 802 approves connection of power facility 808 to tie point 124 if terminal 806 agrees to the terms. The management device 802 manages the conditions and the power equipment 808 in association with each other. The management device 802 may notify the power equipment 808 or the terminal 806 of a control command for controlling the power equipment 808 based on the conditions.

With such a configuration, when connecting the power equipment 808 to the power system, it is possible to determine whether the power equipment 808 can be connected efficiently and with high accuracy. Also, the management device 802 can control the power equipment 808 based on the conditions attached at the time of connection.

FIG. 9 illustrates an example computer 2200 upon which aspects of the invention may be implemented in whole or in part. Programs installed on the computer 2200 may cause the computer 2200 to function as one or more sections of an operation or apparatus associated with an apparatus according to embodiments of the invention, or may Sections can be executed and/or computer 2200 can be caused to perform methods or steps of methods according to embodiments of the invention. Such programs may be executed by CPU 2212 to cause computer 2200 to perform certain operations associated with some or all of the blocks in the flowcharts and block diagrams described herein.

Computer 2200 according to this embodiment includes CPU 2212 , RAM 2214 , graphics controller 2216 , and display device 2218 , which are interconnected by host controller 2210 . Computer 2200 also includes input/output units such as communication interface 2222, hard disk drive 2224, DVD-ROM drive 2226, and IC card drive, which are connected to host controller 2210 via input/output controller 2220. there is The computer also includes legacy input/output units such as ROM 2230 and keyboard 2242 , which are connected to input/output controller 2220 through input/output chip 2240 .

CPU 2212 operates according to programs stored in ROM 2230 and RAM 2214, thereby controlling each unit. Graphics controller 2216 retrieves image data generated by CPU 2212 into itself, such as a frame buffer provided in RAM 2214 , and causes the image data to be displayed on display device 2218 .

Communication interface 2222 communicates with other electronic devices over a network. Hard disk drive 2224 stores programs and data used by CPU 2212 within computer 2200 . DVD-ROM drive 2226 reads programs or data from DVD-ROM 2201 and provides programs or data to hard disk drive 2224 via RAM 2214 . The IC card drive reads programs and data from IC cards and/or writes programs and data to IC cards.

ROM 2230 stores therein programs that are dependent on the hardware of computer 2200, such as a boot program that is executed by computer 2200 upon activation. Input/output chip 2240 may also connect various input/output units to input/output controller 2220 via parallel ports, serial ports, keyboard ports, mouse ports, and the like.

A program is provided by a computer-readable medium such as a DVD-ROM 2201 or an IC card. The program is read from a computer-readable medium, installed in hard disk drive 2224 , RAM 2214 , or ROM 2230 , which are also examples of computer-readable medium, and executed by CPU 2212 . The information processing described within these programs is read by computer 2200 to provide coordination between the programs and the various types of hardware resources described above. An apparatus or method may be configured by implementing the manipulation or processing of information in accordance with the use of computer 2200 .

For example, when communication is performed between the computer 2200 and an external device, the CPU 2212 executes a communication program loaded in the RAM 2214 and sends communication processing to the communication interface 2222 based on the processing described in the communication program. you can command. The communication interface 2222 reads transmission data stored in a transmission buffer processing area provided in a recording medium such as the RAM 2214, the hard disk drive 2224, the DVD-ROM 2201, or an IC card under the control of the CPU 2212, and transmits the read transmission data. Data is transmitted to the network, or received data received from the network is written to a receive buffer processing area or the like provided on the recording medium.

In addition, the CPU 2212 causes the RAM 2214 to read all or necessary portions of files or databases stored in external recording media such as a hard disk drive 2224, a DVD-ROM drive 2226 (DVD-ROM 2201), an IC card, etc. Various types of processing may be performed on the data in RAM 2214 . CPU 2212 then writes back the processed data to the external recording medium.

Various types of information, such as various types of programs, data, tables, and databases, may be stored on recording media and subjected to information processing. CPU 2212 performs various types of operations on data read from RAM 2214, information processing, conditional decision making, conditional branching, unconditional branching, and information retrieval, as specified throughout this disclosure and by instruction sequences of programs. Various types of processing may be performed, including /replace, etc., and the results written back to RAM 2214 . In addition, the CPU 2212 may search for information in a file in a recording medium, a database, or the like. For example, if a plurality of entries each having an attribute value of a first attribute associated with an attribute value of a second attribute are stored in the recording medium, the CPU 2212 determines that the attribute value of the first attribute is specified. search the plurality of entries for an entry that matches the condition, read the attribute value of the second attribute stored in the entry, and thereby associate it with the first attribute that satisfies the predetermined condition. an attribute value of the second attribute obtained.

The programs or software modules described above may be stored in a computer readable medium on or near computer 2200 . Also, a recording medium such as a hard disk or RAM provided in a server system connected to a dedicated communication network or the Internet can be used as a computer-readable medium, thereby providing the program to the computer 2200 via the network. do.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the description of the scope of claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

The execution order of each process such as actions, procedures, steps, and stages in the devices, systems, programs, and methods shown in the claims, the specification, and the drawings is particularly "before", "before etc., and it should be noted that they can be implemented in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the specification, and the drawings, even if the description is made using "first," "next," etc. for the sake of convenience, it means that it is essential to carry out in this order. not a thing

100... connection determination device, 102... facility information acquisition unit, 104... system information acquisition unit, 106... constraint determination unit, 108... system information storage unit, 110... system information update Unit, 112 Topographical information acquisition unit 114 Additional authentication unit 120 Topographical information 122 New electric power facility 124 Interconnection point 126 River 128 Road 130 First area 132 Second area 200 Virtual model 202 Power generation facility 206 Transformer 207 Transformer 208, 209, 309... Power transmission line, 212... Power generation facility, 225... End, 230... Inter-area connector, 300... Virtual model, 306... Transformer, 307... Transformer 308 Transmission line 312 Power generation facility 325 End 310 Load 802 Management device 804 Network 806 Terminal , 808 power equipment

Claims (10)

A connection determination device for determining whether or not new power equipment can be connected to a power system,
A facility information acquisition unit that acquires facility information including location information of the new power facility;
a system information acquisition unit for acquiring model information of the power system before the new power equipment is connected, the system model information including position information of a plurality of interconnection points to which the power equipment can be connected;
With respect to at least one interconnection point selected according to the position information of the new power equipment and the position information of the plurality of interconnection points, a virtual a constraint determination unit that calculates model information based on the equipment information and the system model information, and determines whether the virtual model information satisfies a predetermined constraint condition ,
Further comprising a terrain information acquisition unit that acquires information about the cost of installing a power transmission line at each point in the area including the location of the new power equipment,
The connection determination device, wherein the constraint determination unit selects the interconnection point based on the information. A connection determination device for determining whether or not new power equipment can be connected to a power system,
A facility information acquisition unit that acquires facility information including location information of the new power facility;
a system information acquisition unit for acquiring model information of the power system before the new power equipment is connected, the system model information including position information of a plurality of interconnection points to which the power equipment can be connected;
With respect to at least one interconnection point selected according to the position information of the new power equipment and the position information of the plurality of interconnection points, a virtual a constraint determination unit that calculates model information based on the equipment information and the system model information, and determines whether the virtual model information satisfies a predetermined constraint condition ,
Elevation of each point, difference in elevation between points, existence of rivers, existence of buildings, height of buildings, whether or not the area has restrictions on installation of wiring facilities in the area including the location of the new electric power facility further comprising a terrain information acquisition unit that acquires terrain information including at least one of the following information;
The connection determination device, wherein the constraint determination unit selects the interconnection point based on the terrain information. The constraint determination unit determines, for each of the two or more interconnection points selected according to the position information of the new power equipment and the position information of the plurality of interconnection points, to each of the interconnection points Calculate the virtual model information when the new power equipment is connected, determine whether or not each piece of virtual model information satisfies the constraint condition, and satisfy the constraint condition among the two or more interconnection points. 3. The connection determination device according to claim 1, wherein all the interconnection points satisfying the condition are extracted. The system model information includes information about the installed capacity of the transmission line connected to the interconnection point,
4. The constraint determination unit according to any one of claims 1 to 3, wherein the constraint determination unit determines whether or not the power flowing through each of the transmission lines in the virtual model information satisfies the constraint condition according to the installed capacity. connection determination device. a system information storage unit that stores the system model information;
5. The system information updating unit that updates the system model information stored in the system information storage unit when information about the operation status of equipment included in the power system is acquired, further comprising: 1. The connection determination device according to claim 1. a system information storage unit that stores the system model information;
Updating the system model information stored in the system information storage unit to the system model information in which the new power equipment is added on condition that the connection of the new power equipment to the power system is authenticated. The connection determination device according to any one of claims 1 to 4, further comprising a system information updating unit. A connection determination method for determining whether or not new power equipment can be connected to a power system by a computer,
A facility information acquiring step of acquiring facility information including location information of the new power facility;
A system information acquisition step of acquiring model information of the power system before the new power equipment is connected, the system model information including position information of a plurality of interconnection points to which the power equipment can be connected;
For at least one interconnection point, virtual model information when the new power equipment is connected to the interconnection point is calculated based on the equipment information and the system model information, and the virtual model information is predetermined. and a constraint determination stage for determining whether the constraint is satisfied ;
further comprising a terrain information processing step of obtaining information about costs for installing power lines at each point in the area including the location where the new power equipment is to be installed;
The connection determination method, wherein the restriction determination step selects the interconnection point based on the information. A connection determination method for determining whether or not new power equipment can be connected to a power system by a computer,
A facility information acquiring step of acquiring facility information including location information of the new power facility;
A system information acquisition step of acquiring model information of the power system before the new power equipment is connected, the system model information including position information of a plurality of interconnection points to which the power equipment can be connected;
For at least one interconnection point, virtual model information when the new power equipment is connected to the interconnection point is calculated based on the equipment information and the system model information, and the virtual model information is predetermined. and a constraint determination stage for determining whether the constraint is satisfied ;
Elevation of each point, difference in elevation between points, existence of rivers, existence of buildings, height of buildings, whether or not the area has restrictions on installation of wiring facilities in the area including the location of the new electric power facility further comprising a terrain information acquisition step of acquiring terrain information including at least one of the information;
The constraint determination step includes a connection determination method of selecting the interconnection point based on the terrain information. A program for causing a computer to execute the connection determination method according to claim 7 or 8 . A management device for managing the power system comprising a connection determination device for determining whether or not new power equipment can be connected to the power system,
The connection determination device is
A facility information acquisition unit that acquires facility information including location information of the new power facility;
a system information acquisition unit for acquiring model information of the power system before the new power equipment is connected, the system model information including position information of a plurality of interconnection points to which the power equipment can be connected;
With respect to at least one interconnection point selected according to the position information of the new power equipment and the position information of the plurality of interconnection points, a virtual a constraint determination unit that calculates model information based on the facility information and the system model information, and determines whether the virtual model information satisfies a predetermined constraint condition;
with
The management device extracts one or more interconnection points satisfying the constraint from among the interconnection points, and assigns the one or more interconnection points satisfying the constraint to a terminal corresponding to the new power equipment. notify and
A management device that approves connection after confirming again whether or not the constraint is satisfied when the new power equipment is connected to the one or more interconnection points that satisfy the constraint.

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