JP5525349B2 - Power system monitoring and control device - Google Patents

Description

Embodiments described herein relate generally to a power system monitoring and control apparatus for the purpose of monitoring, controlling, operating, and recording a power system.

The configuration of a conventional power system monitoring control device will be described with reference to FIG. FIG. 13 is a block diagram showing a configuration of a conventional power system monitoring control device.

When the operator requests the calculation execution means 11 from the HMI 15 to execute the power flow calculation, the calculation execution means 11 activates the system degeneration means 12 and the calculation data input means 14.

The system degeneration means 12 reads all nodes and branch data defined on the facility from the facility DB file 13 and stores the status of the power facility (breaker, disconnector on / off, etc.) stored in the online SV file 18. The node group that is electrically equivalent to the above is taken as one degenerate node, the branch group arranged in parallel is set as a degenerate branch, and the connection information of the degenerate node and degenerate branch is passed to the tidal current calculation execution means 11.

The calculation data input means 14 is a value of the online TM file 16 storing actual values such as the generator active power P, the generator terminal voltage V, the load active power P, and the load reactive power Q as initial values of the power flow calculation, Alternatively, values such as P, Q, and V input by the operator from the HMI 15 are passed to the tidal current calculation execution means 11.

The calculation execution means 11 executes the power flow calculation based on the data received from the system degeneration means 12 and the calculation data input means 14, saves the calculation results in the calculation result storage file 17, and notifies the HMI 15 of the end of the calculation.

The operator receives the notification of the end of the tidal current calculation displayed on the HMI 15 and refers to the tidal current calculation result stored in the calculation result storing file 17.

With the above configuration, the power system monitoring and control apparatus can perform power flow calculation of the power system.

Patent Document 1 shows a power system degeneration model creating apparatus that performs transient stability calculation using a database degenerated as described above.

JP 2008-219974 A

In the power flow calculation in the conventional power system monitoring and control apparatus, only one calculation system can be calculated from the node and branch data defined in the facility DB file 13, and the facility DB file 13 can be changed to change the scale of the calculation system. I had to change the data.

The embodiment according to the present invention aims to obtain a power system monitoring and control apparatus capable of changing the scale of a calculation system subject to power flow calculation without changing the data defined in the facility DB file 13.

In an electric power system monitoring and control device that performs electric power system monitoring, control, and power flow calculation, an equipment DB file in which electric equipment data including node data and branch data of electric equipment installed in the electric power system range to be monitored and controlled is defined A first HMI that inputs an operator instruction, and a transmission line designation means that designates a transmission line in the power system based on an operator transmission line designation instruction input via the first HMI; Search for branch data corresponding to the transmission line designated by the transmission line designation means from the equipment DB file, and connect to the transmission line designated by the transmission line designation means and the transmission line branch search means for saving in the replacement branch file Bus node search means for searching node data corresponding to the bus to be searched from the equipment DB file and storing it in the installed node file; Calculation system designating means for designating an electric power system for performing power flow calculation based on an operator's calculation system designation instruction inputted through the first HMI and data defined in the equipment DB file; Based on an operator's pseudo model designation instruction input via the HMI, pseudo model designation for designating a pseudo model to be replaced with the transmission line designated by the transmission line designation means from either a pseudo generator or a pseudo load Means, and sets the pseudo model specified by the pseudo model specifying means in the node data stored in the installation node file, and the node data stored in the installation node file and the equipment data stored in the equipment DB file Based on the above, a pseudo model insertion method for creating power grid data for calculation and saving it in a grid file for reduction calculation Branch deletion means for deleting the branch data stored in the replacement branch file from the calculation power system data stored in the reduced calculation system file, and the electric power installed in the power system range for monitoring and control Based on the online SV file in which the state of the equipment is stored, the calculation power system data stored in the reduced calculation system file, and the state of the electrical equipment stored in the online SV file, it is electrically equivalent. System degeneration means for degenerating node data, branch data, a second HMI for inputting an operator's instruction, an online TM file storing actual values as input data for power flow calculation, and the second HMI. Based on the operator's instructions input via the system and the actual values stored in the online TM file. Calculation data input means for outputting input data to be used, operator instructions input via the second HMI, calculation power system data stored in the reduced calculation system file, and storage in the online TM file The pseudo model TM setting means for setting the TM value of the pseudo load or the pseudo generator specified by the pseudo model specifying means based on the actual result value, and the operator input via the second HMI When there is a calculation instruction, the calculation power grid data reduced by the grid reduction means, the input data output from the calculation data input means, and the TM value set by the pseudo model TM setting means And a calculation execution means for executing a tidal flow calculation.

The figure which shows the structure about 1st Embodiment of an electric power system monitoring control apparatus. The flowchart which shows the effect | action about 1st Embodiment of an electric power system monitoring control apparatus. The figure which shows the structure about 2nd Embodiment of an electric power system monitoring control apparatus. The flowchart which shows the effect | action about 2nd Embodiment of an electric power system monitoring control apparatus. The figure which shows the structure about 3rd Embodiment of an electric power system monitoring control apparatus. The flowchart which shows the effect | action about 3rd Embodiment of an electric power system monitoring control apparatus. The figure which shows the structure about 4th Embodiment of an electric power system monitoring control apparatus. The flowchart which shows the effect | action about 4th Embodiment of an electric power system monitoring control apparatus. The figure which shows the structure about 5th Embodiment of an electric power system monitoring control apparatus. The flowchart which shows the effect | action about 5th Embodiment of an electric power system monitoring control apparatus. The figure which shows the structure about 6th Embodiment of an electric power system monitoring control apparatus. The flowchart which shows the effect | action about 6th Embodiment of an electric power system monitoring control apparatus. The figure which shows the structure of the conventional electric power system monitoring control apparatus.

Hereinafter, an embodiment of a power system monitoring control device according to the present invention will be described with reference to the drawings.

(First embodiment)
A first embodiment of a power system monitoring and control apparatus according to the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 shows the configuration of the power system monitoring and control apparatus of the first embodiment. FIG. 2 shows a flow of the power system monitoring and control apparatus of the first embodiment.

The configuration of the power system monitoring and control device of the first embodiment will be described with reference to FIG. The same components as those in FIG. 13 showing the configuration of the conventional power system monitoring and control device are denoted by the same reference numerals, and description thereof is omitted.

The HMI 15a sets various data used by the operator for power flow calculation and refers to the calculation result, and the HMI 15b specifies the calculation power system range to be calculated by the operator.

The transmission line designation means 21 designates a transmission line that is a boundary between the calculated power system range specified by the HMI 15b and the outside of the calculation target range. The calculation system designation | designated means 22 designates the installation data defined in the installation DB file 13 corresponding to the calculation electric power system range designated by HMI15b. The system designation file 32 stores equipment data to be calculated designated by the computation system designating means 22.

The pseudo model designating unit 23 designates whether to install a pseudo load or a pseudo generator in the calculation power system range designated by the HMI 15b.

The transmission line branch search unit 24 is configured such that the transmission line selected by the transmission line designation unit 21 is the facility DB.
The branch corresponding to the branch of the file 13 is searched, and the corresponding branch is stored in the replacement branch file 25.

The bus node search unit 26 searches the facility DB file 13 for a node corresponding to the bus that sets a pseudo load or a pseudo generator in the power system designated by the calculation system designating unit 22, and stores the corresponding node in the installation node file 27. To do.

  The pseudo model TM setting means 28 sets the pseudo load or the TM value of the pseudo generator.

The branch deletion unit 29 separates the branch searched by the transmission line branch search unit 24 and stored in the replacement branch file 25 from the calculation target.

The pseudo model insertion unit 30 sets a pseudo load or a pseudo generator at a node in the installation node file 27.

The reduction calculation grid file 31 stores calculation power grid data generated by the branch deletion unit 29 and the pseudo model insertion unit 30.

Next, the operation of the first embodiment configured as described above will be described with reference to FIGS.

When the operator designates an arbitrary transmission line to be divided from the HMI 15b, the H
The MI 15b activates the power transmission line designation means 21 (step 101).

The power transmission line designation means 21 activates the power transmission line branch search means 24 and the bus node search means 26, respectively, and passes the specified power transmission line information. The transmission line branch search means 24 fetches all transmission line data and all branch data from the equipment DB file 13, searches for branch data corresponding to the designated transmission line, stores the search result in the replacement branch file 25, and deletes the branch. The means 29 is activated to deliver all branch data fetched from the equipment DB file 13.

The branch deletion means 29 deletes the branches stored in the replacement branch file 25 from all the branch data received from the transmission line branch search means 24 and stores them in the system calculation system file 31 (step 102).

The bus node search means 26 retrieves all bus data and all node data from the equipment DB file 13 and searches for node data corresponding to the bus connected to the designated power transmission line and stores it in the installation node file 27 (step 103).

When the operator designates whether to install a pseudo load or a pseudo generator instead of the transmission line to be divided from the HMI 15b, the HMI 15b activates the pseudo model designation means 23. The pseudo model designation means 23 activates the pseudo model insertion means 30 in accordance with the operator's designation, and designates either the pseudo load model or the pseudo generator model to be inserted (step 1).
04).

When the operator designates which power system is to be calculated with the transmission line designated by division from the HMI 15b as a boundary, the HMI 15b activates the computation system designating means 22. The calculation system designation means 22 takes out the bus data of the equipment DB file 13 and stores the bus information on the side designated by the operator in the system designation file 32 (step 105).

The pseudo model insertion means 30 takes out all the node data of the equipment DB file 13 and adds the pseudo model designation means to the node data on the bus side saved in the system designation file 32 with respect to the node data saved in the installation node file 27. 23, the pseudo load model or pseudo generator model specified by 23 is connected, and node data, load data, generator data and the pseudo load data or pseudo generator data inserted here are stored in the reduction calculation system file 31. (Step 106).

When the operator designates the tidal current calculation execution from the HMI 15a, the HMI 15a activates the calculation execution means 11. The calculation execution means 11 calls the system degeneration means 12, the calculation data input means 14, and the pseudo model TM setting means 28. The pseudo model TM setting means 28 refers to the contraction calculation system file 31 and extracts the TM value corresponding to the pseudo load model or the pseudo generator model from the online TM file 16.

The system degeneration means 12 performs system degeneration so that the tidal current calculation can be executed based on the connection state of the nodes, branches, generators, loads, etc. stored in the reduction calculation system file 31 and the online SV file 18. Pass to the execution means 11. The calculation execution means 11 calculates the power flow based on the system degeneration information received from the system degeneration means 12 and the input data information such as the power generation value, load value, and voltage value received from the calculation data input means 14 and the pseudo model TM setting means 28. And the result is saved in the calculation result saving file 17 (step 107).

According to the present embodiment, when the operator designates a transmission line from the HMI 15b, the calculation power system range with the transmission line as a boundary is automatically designated, whereby the equipment DB file 13
Therefore, the calculation power system range can be variably set without changing the value, and the power flow in the calculation power system range designated by the operator can be calculated.

The same effect can be obtained also when there are a plurality of transmission lines that serve as boundaries between the calculated power system range specified by the HMI 15b and the outside of the calculation target range.

Furthermore, although it was specified whether to install a pseudo load or a pseudo generator in the calculated power system range specified by the HMI 15b, based on the calculated power system range to be calculated and the facility DB file 13, It may be specified whether to install a pseudo load or a pseudo generator automatically.

(Second Embodiment)
A second embodiment of the power system monitoring control apparatus according to the present invention will be described with reference to FIGS. FIG. 3 shows the configuration of the power system monitoring and control apparatus of the second embodiment. FIG.
The flow of the electric power system monitoring control apparatus of 2nd Embodiment is shown. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

The difference between the power system monitoring and control apparatus of the present embodiment and the first embodiment is that the continuous change designating unit 33.
And a continuous branch search means 34.

The continuous change designating unit 33 designates a connecting transformer that is a boundary between the calculated power system range designated by the HMI 15b and the outside of the calculation target range. The continuous change branch searching means 34 is connected to the continuous change specifying means 3.
It is searched which branch of the facility DB file 13 corresponds to the contact transformer selected in 3.

The operation of the present embodiment configured as described above will be described with reference to FIGS.

When the operator designates an arbitrary power transmission line to be divided from the HMI 15b, means for searching for and deleting the corresponding branch data and searching for the bus connected to the designated power transmission line from all the buses in the first embodiment Steps 101 → 102 → 103 are omitted because they are the same.

When the operator designates an arbitrary contact transformer for dividing the power system from the HMI 15b, the HMI 15b activates the continuous change designation means 33 (step 108).

The change designation means 33 activates the continuous change branch search means 34 and the bus node search means 26, respectively, and passes the information on the designated contact transformer. The continuous branch search means 34 fetches all contact transformer data and all branch data from the equipment DB file 13, searches for branch data corresponding to the designated contact transformer, and stores the search result in the replacement branch file 25. And
The branch deletion means 29 is activated and all the branch data fetched from the equipment DB file 13 is delivered.

The branch deletion unit 29 deletes the branch stored in the replacement branch file 25 from all the branch data received from the continuous branch search unit 34 and stores it in the system calculation system file 31 (step 109).

The bus node search means 26 retrieves all bus data and all node data from the equipment DB file 13, searches for node data corresponding to the bus connected to the designated contact transformer, and stores it in the replacement node file 27 (step 110). ).

The designation of the pseudo load or the pseudo generator by the operator, the designation of the calculation target system, and the execution of the power flow calculation are the same as the steps 104 → 105 → 106 → 107 of the first embodiment, and are omitted here.

According to the present embodiment, the operator designates the power transmission line and the contact transformer by the HMI 15b, and automatically designates the calculated power system range with the power transmission line and the contact transformer as a boundary, thereby the equipment DB. The calculation power system range can be variably set without changing the file, and the power flow can be calculated in the calculation power system range of a smaller local scale specified by the operator.

(Third embodiment)
A third embodiment of the power system monitoring and control apparatus according to the present invention will be described with reference to FIGS. FIG. 5 shows the configuration of the power system monitoring and control apparatus of the third embodiment. FIG.
The flow of the electric power system monitoring control apparatus of 3rd Embodiment is shown. The same components as those of the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

The power system monitoring and control apparatus of the present embodiment shown in FIG. 5 differs from the second embodiment in that a replacement designation DB file 35 and a search activation means 36 are used instead of the transmission line designation means 21 and the continuous change designation means 33. It is a point provided with.

The search activation means 36 activates the power transmission line branch search means 24, the continuous variable branch search means 34, and the bus node search means 26.

The replacement specification DB file 35 is configured to include a replacement specification DB file 35 that stores the power transmission line and the connection transformer facilities that serve as power system division points.

The operation of the present embodiment configured as described above will be described with reference to FIGS.

When the operator designates the power system division to be calculated from the HMI 15b, the HMI 15b
Activates the search activation means 36. The search activation means 36 activates the power transmission line branch search means 24, the bus node search means 26, and the continuous branch search means 34, respectively (step 111).
.

The transmission line branch search means 24 fetches all transmission line data, all branch data, and data of the division target transmission lines stored in the replacement designation DB file 35 from the equipment DB file 13,
The branch data corresponding to the transmission line designated for division is searched, the search result is stored in the replacement branch file 25, the branch deletion means 29 is activated, and all the branch data fetched from the equipment DB file 13 is passed.

The branch deletion means 29 deletes the branches stored in the replacement branch file 25 from all the branch data received from the transmission line branch search means 24 and stores them in the system calculation system file 31 (step 112).

The bus node search means 26 retrieves all bus data and all node data from the facility DB file 13 and searches for node data corresponding to the bus connected to the designated transmission line and stores it in the replacement node file 27 (step 103).

Further, the continuous branch search means 34 receives all the contact transformer data from the equipment DB file 13,
All the branch data and the data of the division target communication transformer stored in the replacement designation DB file 35 are fetched, the branch data corresponding to the division designated communication transformer is searched, and the search result is stored in the replacement branch file 25. The branch data is saved, the branch deletion means 29 is activated, and all branch data fetched from the equipment DB file 13 is delivered.

The branch deletion unit 29 deletes the branch stored in the replacement branch file 25 from all the branch data received from the continuous branch search unit 34 and stores it in the system calculation system file 31 (step 113).

The bus node search means 26 retrieves all bus data and all node data from the equipment DB file 13, searches for node data corresponding to the bus connected to the designated contact transformer, and stores it in the replacement node file 27 (step 110). ).

The specification of the pseudo load or the pseudo generator by the operator, the specification of the calculation target system, and the execution of the power flow calculation are the same as the steps 104 → 105 → 106 → 107 of the second embodiment, and are omitted here.

According to the present embodiment, the power transmission line and the contact transformer for dividing the power system are designated in the facility DB file 13 in advance, so that the operator can calculate the calculated power system range with the power transmission line and the contact transformer as a boundary. It is possible to set the calculation power system range variably without changing the facility DB file 13 without designating the transmission line and the connection transformer as the system dividing points every time. Is possible.

Here, patterns may be divided according to the calculation power system range to be calculated for power flow calculation, and the patterns may be stored in the replacement designation DB file 36. At this time, since the operator can select the calculation power system range only by selecting the pattern stored in the replacement designation DB, the work efficiency is improved.

(Fourth embodiment)
A fourth embodiment of the power system monitoring and control apparatus according to the present invention will be described with reference to FIGS. FIG. 7 shows the configuration of the power system monitoring and control apparatus of the fourth embodiment. FIG.
The flow of the electric power system monitoring control apparatus of 4th Embodiment is shown. The same components as those of the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

The difference between the power system monitoring and control apparatus of the present embodiment and the power system monitoring and control apparatus of the second embodiment is that, instead of the continuous change specifying means 33, a search activation means 36, another business activation reception means 39,
The received data analysis means 38 and a replacement designation data file are provided.

The search activation means 36 activates the power transmission line branch search means 24, the continuous variable branch search means 34, and the bus node search means 26.

The other business start receiving means 39 includes the start information of the operation calculation function from the other business functions such as the monitoring function, the control function, the training business, the designation information of the dividing point by the power transmission line and the contact transformer, and the calculation target system. Receive information.

The received data analysis means 38 analyzes which power transmission line or contact transformer is designated by the other business activation receiving means 39 and stores the analysis result in the replacement designation data file 37.

The operation of the present embodiment configured as described above will be described with reference to FIGS.

Here, an example will be described in which the control operation is an operational calculation operation and power flow calculation using system reduction is performed. The operator of the control business passes the tidal current calculation execution request and the information on the transmission line and the contact transformer as the division point of the calculation target system to the business activation receiving means 39 in addition to the operational calculation business. The other business activation receiving means 39 activates the received data analyzing means 38, and passes the transmission line and contact transformer information received from the control function and the calculation target system (step 114).

The reception data analysis means 38 stores the received power transmission line and communication transformer data in the replacement designation data file 37 and activates the search activation means 36 (step 115).

The search and deletion of the branch corresponding to the transmission line and the search of the connection node are the same as steps 112 → 103 of the second embodiment, and the search and deletion of the branch corresponding to the contact transformer and the search of the connection node are steps. Since it is the same as 113 → 110, it is omitted here. Moreover, since the designation method of the pseudo load or the pseudo generator is the same as that in step 104 of the second embodiment, it is omitted here.

The reception data analysis unit 38 activates the calculation system designation unit 22 and passes information on the calculation target system.
The calculation system designation means 22 takes out the bus data of the equipment DB file 13 and stores the bus information on the side designated by the operator in the system designation file 32 (step 116).

The contents of the pseudo model insertion means 30 storing the data in the reduction calculation system file 31 are shown in FIG.
Since this is the same as step 106 in FIG. The other business activation receiving unit 39 activates the calculation execution unit 11, the calculation data input unit 14, and the pseudo model TM setting unit 28. The pseudo model TM setting means 28 refers to the contraction calculation system file 31 and extracts the TM value corresponding to the pseudo load model or the pseudo generator model from the online TM file 16.

The calculation execution means 11 calls the system degeneration means 12. The system degeneration means 12 performs system degeneration so that the tidal current calculation can be executed based on the connection state of the nodes, branches, generators, loads, etc. stored in the reduction calculation system file 31 and the online SV file 18. Execution means 11
To pass.

The calculation execution means 11 calculates the power flow based on the system degeneration information received from the system degeneration means 12 and the input data information such as the power generation value, load value, and voltage value received from the calculation data input means 14 and the pseudo model TM setting means 28. And the result is stored in the calculation result storage file 17 (step 117).

According to this embodiment, regarding the transmission line and the contact transformer that divides the calculation power system designated by other work such as monitoring work, control work, training work, etc., the transmission line and the contact transformer are used as boundaries. The facility DB without the operator of the operation calculation business specifying the calculation power system range
The calculation power system range can be variably set without changing the file, and the power flow can be calculated in the calculation power system range specified by the operator of other work.

(Fifth embodiment)
A fifth embodiment of the power system monitoring and control apparatus according to the present invention will be described with reference to FIGS. 9 and 10. FIG. 9 shows the configuration of the power system monitoring and control apparatus of the fifth embodiment. FIG. 10 shows a flow of the power system monitoring control apparatus of the fifth embodiment. The same components as those in the fourth embodiment are denoted by the same reference numerals, and description thereof is omitted.

The difference between the power system monitoring and control device of the present embodiment and the power system monitoring and control device of the fourth embodiment is that an electric station data receiving means 40 is provided instead of the other business activation receiving means 39.

The electric station data receiving means 40 receives information indicating whether the electric station is not subject to tidal current calculation from the electric station.

The operation of the present embodiment configured as described above will be described with reference to FIGS.

Here, a description will be given on the assumption that an electric power station is excluded from calculation from an arbitrary electric power station in advance, and information on a transmission line and a contact transformer belonging to the electric power station is sent to the power system monitoring and control device.

When the operator instructs the HMI 15a to receive the electric station exclusion information of the calculation target system, the HMI 15a activates the electric station data receiving means 40. The electric station data receiving means 40 activates the received data analyzing means 38, and passes the transmission line and contact transformer information received from the electric station and the information that the electric station is not subject to calculation (step 118).

The reception data analysis means 38 stores the received power transmission line and communication transformer data in the replacement designation data file 37 and activates the search activation means 36 (step 115).

The search and deletion of the branch corresponding to the transmission line and the search of the connection node are the same as Step 112 → 103 of the fourth embodiment, and the search and deletion of the branch corresponding to the contact transformer and the search of the connection node are the first. Since it is the same as step 113 → 110 in the fourth embodiment, it is omitted here.

Moreover, since the designation method of the pseudo load or the pseudo generator is the same as that in step 104 of the fourth embodiment, it is omitted here. In addition, the received data analysis means 38 is a calculation system designation means 22.
And the method of designating an actual calculation target system using the non-calculation electric power station as a division point is the same as that in step 116 of the fourth embodiment, and is omitted here.

The pseudo model insertion means 30 stores the data in the reduction calculation system file 31 and the method for the operator to execute the power flow calculation from the HMI 15a is step 106 of the fourth embodiment.
Since it is the same as 107, it is omitted here.

According to the present embodiment, by receiving information on a transmission line and a contact transformer that divides a specified calculation power system from an electric station and information that the electric station is not subject to tidal current calculation, the transmission line and The calculation power system range that excludes the power station without specifying the power calculation system range that excludes the power station with the contact transformer as the boundary, and without changing the facility DB file. Tidal current calculation is possible.

(Sixth embodiment)
A sixth embodiment of the power system monitoring and control apparatus according to the present invention will be described with reference to FIGS. 11 and 12. FIG. 11 shows the configuration of the power system monitoring and control apparatus of the sixth embodiment. FIG. 12 shows a flow of the power system monitoring and control apparatus of the sixth embodiment. The same components as those of the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

The power system monitoring and control apparatus shown in FIG. 11 is different from the power system monitoring and control apparatus described in the second embodiment in that a plurality of system calculation designating means 41 and a plurality of systems are designated instead of the calculation system designating means 22 and the system designation file 32. The system designation file 42 is provided.

The multiple system calculation designating means 41 designates a plurality of calculation systems and stores the designation result in the multiple system designation file 42.

The operation of the present embodiment configured as described above will be described with reference to FIGS. 11 and 12.

The operator designates a power transmission line or a contact transformer to divide the power system from the HMI 15b, deletes the corresponding branch, and searches for a connection node, step 10 of the second embodiment.
Since 1 → 102 → 103 → 108 → 109 → 110, and the designation of the pseudo load or the pseudo generator is the same as that in step 104 of the second embodiment, it is omitted here.

When the operator specifies to calculate a plurality of power systems with the transmission line and the communication transformer specified by the HMI 15b as divisions, the HMI 15b specifies a plurality of system calculation specifying means 41.
Start up. The multi-system calculation designating means 41 is the facility DB for the first designated power system.
The bus data of the file 13 is taken out and the bus information on the side designated by the operator is stored in the multi-system designation file 42 (step 119).

The pseudo model insertion means 30 extracts all the node data of the equipment DB file 13 and specifies the pseudo model in the node data on the bus side stored in the multiple system specification file 42 with respect to the node data stored in the installation node file 27. The pseudo load model or pseudo generator model designated by the means 23 is connected, and the node data, load data, generator data and the pseudo load data or pseudo generator data inserted here are stored in the reduction calculation system file 31. (Step 120).

Next, the multiple system calculation designation unit 41 activates the calculation execution unit 11. The calculation execution means 11 activates the system degeneration means 12, the calculation data input means 14, and the pseudo model TM setting means 28.
The pseudo model TM setting means 28 refers to the contraction calculation system file 31 and extracts the TM value corresponding to the pseudo load model or the pseudo generator model from the online TM file 16.

The system degeneration means 12 performs system degeneration so that the tidal current calculation can be executed based on the connection state of the nodes, branches, generators, loads, etc. stored in the reduction calculation system file 31 and the online SV file 18. Pass to the execution means 11.

The calculation execution means 11 performs power flow calculation based on the system degeneration information received from the system degeneration means 12 and the input data information of the power generation value, load value, and voltage value received from the calculation data input means 14 and the pseudo model TM setting means 28. The execution result is saved in the calculation result saving file 17. Next, the calculation execution means 11 notifies the multi-system calculation designation means 41 of the completion of calculation (step 121).

Thereafter, Steps 119 → 120 → 121 are repeated for the number of calculation target systems received by the multiple system calculation designating means 41 from the HMI 15b (Step 122).

According to the present embodiment, the operator can specify the calculated power system range without changing the equipment DB file by specifying a plurality of divided power systems that are formed by specifying the transmission line and the contact transformer from the HMI. It can be set in a variable manner, and the power flow calculation of the divided power system for the amount specified by the operator can be performed in one operation.

According to the embodiment of the present invention, it is possible to obtain a power system monitoring and control apparatus that can change the calculation system scale of the power flow calculation target without changing the data defined in the facility DB file 13.

As mentioned above, although some embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and their variations are
It is included in the scope and gist of the invention, and is included in the invention described in the claims and the equivalent scope thereof.

11 ... Calculation execution means 12 ... System degeneration means 13 ... Equipment DB file 14 ... Calculation data input means 15 ... HMI
16 ... Online TM file 17 ... Calculation result storage file 18 ... Online SV file 21 ... Transmission line designation means 22 ... Calculation system designation means 23 ... Pseudo model designation means 24 ... Transmission line branch search means 25 ... Replacement branch file 26 ... Bus node Search means 27 ... Installation node file 28 ... Pseudo model TM setting means 29 ... Branch deletion means 30 ... Pseudo model insertion means 31 ... Reduction calculation system file 32 ... System specification file 33 ... Continuity designation means 34 ... Continuity branch search Means 35 ... Replacement designation DB file 36 ... Search activation means 37 ... Replacement designation data file 38 ... Received data analysis means 39 ... Other business activation reception means 40 ... Electricity station data reception means 41 ... Multiple system calculation designation means 42 ... Multiple system designation File

Claims (8)

In the power system monitoring and control device that performs power system monitoring, control, and power flow calculation,
A facility DB file in which electrical facility data including branch data and node data of electrical facilities installed in a power system range to be monitored and controlled;
A first HMI for inputting operator instructions;
A transmission line designation means for designating a transmission line in the power system based on an operator's transmission line designation instruction input via the first HMI;
Search for branch data corresponding to the transmission line designated by the transmission line designation means from the equipment DB file, and save the transmission line branch search means in a replacement branch file;
Bus node search means for searching node data corresponding to the bus connected to the power transmission line designated by the power transmission line designation means from the equipment DB file and storing it in the installation node file;
Calculation system designation means for designating an electric power system for performing power flow calculation based on an operator's calculation system designation instruction input via the first HMI and data defined in the equipment DB file;
Based on the pseudo model designation instruction input by the operator via the first HMI, the pseudo model to be replaced with the transmission line designated by the transmission line designation means is designated from either the pseudo generator or the pseudo load. Pseudo model designation means to
Based on the node data stored in the installation node file and the equipment data stored in the equipment DB file, the pseudo model specified by the pseudo model specifying means is set in the node data stored in the installation node file. , A pseudo model insertion means for creating power grid data for calculation and saving it in a grid file for reduced calculation,
Branch deletion means for deleting the branch data stored in the replacement branch file from the calculation power system data stored in the reduced calculation system file;
An online SV file in which the state of electrical equipment installed in the power system range to be monitored and controlled is stored;
System degeneration means for degrading electrically equivalent node data and branch data based on the calculation power system data stored in the contraction calculation system file and the state of the electrical equipment stored in the online SV file When,
A second HMI for inputting operator instructions;
An online TM file that stores actual values that are input data for tidal current calculations,
Calculation data input means for outputting input data used for power flow calculation based on the operator's instruction input via the second HMI and the actual value stored in the online TM file;
Based on the operator's instruction input via the second HMI, the calculation power system data stored in the reduced calculation system file, and the actual value stored in the online TM file, the pseudo model Pseudo model TM setting means for setting the TM value of the pseudo load or pseudo generator designated by the designation means;
When there is an operator's calculation instruction input via the second HMI, the calculation power grid data reduced by the grid reduction means, the input data output from the calculation data input means, A power system monitoring and control device comprising: a calculation execution means for executing a power flow calculation based on the TM value set by the pseudo model TM setting means.   The power system monitoring and control apparatus according to claim 1, wherein the first HMI and the second HMI are the same HMI.   The pseudo model designating unit designates a pseudo model based on an actual value stored in the online TM file and a power transmission line designated by the power transmission line designating unit. The electric power system monitoring control apparatus of description.   The power transmission line designating unit designates a power transmission line serving as a boundary between the calculated power system range and the outside of the calculation target range based on the power system specified by the calculation system specifying unit. 4. The power system monitoring and control device according to any one of 3 above. Based on the operator's contact transformer designation instruction input via the first HMI, continuous change designation means for designating the contact transformer in the power system;
Continuing branch search means for searching the branch data corresponding to the contact transformer specified by the continuous change specifying means from the equipment DB file, and storing it in the replacement branch file,
The bus node search means searches the equipment DB file for node data corresponding to the bus connected to the power transmission line designated by the power transmission line designation means and the contact transformer designated by the continuous change designation means. The power system monitoring and control device according to claim 1, wherein the power system monitoring and control device is stored in an installation node file. A search activation means for activating the bus node search means, the transmission line branch search means, and the continuous variable branch search means based on an operator instruction input via the first HMI;
A replacement designation DB file in which a preset transmission line or a contact transformer is stored, and
The transmission line branch search means searches for the transmission line stored in the replacement designation DB file from the electrical facility data stored in the facility DB file,
The bus node search means searches for the bus connected to the power transmission line or the contact transformer stored in the replacement designation DB file from the electrical facility data stored in the facility DB file,
The communication variable branch searching means, a pre-Symbol contact transformer stored in the replacement specified DB file, the power system of claim 5, wherein the retrieving from the facility DB file to the stored electrical equipment data Supervisory control device. Other business start reception means for receiving a start request and power system designation instruction for performing power flow calculation from other business functions;
Received data analysis means for analyzing a transmission line or a contact transformer that is a boundary between the calculated power system range and the outside of the calculation target range from the power system specified by the power system specification instruction received by the other business activation receiving means; ,
A replacement designation data file for storing data of a transmission line or a contact transformer analyzed by the received data analysis means,
The calculation system designation means designates a power system for performing power flow calculation based on the transmission line or the contact transformer analyzed by the reception data analysis means and the data defined in the equipment DB file,
The pseudo model TM setting means is stored in the online TM file and the transmission power line data or the contact transformer analyzed by the received data analysis means and the calculation power system data stored in the contraction calculation system file. Based on the actual value and set the TM value of the pseudo load or pseudo generator specified by the pseudo model specifying means,
The calculation data input means outputs input data used for power flow calculation based on the transmission line or the contact transformer analyzed by the reception data analysis means and the actual value stored in the online TM file,
The calculation execution means, when it is determined that there is a calculation instruction by the received data analysis means, the calculation power grid data reduced by the grid reduction means, and the input data output from the calculation data input means The power system monitoring and control device according to claim 6, wherein the power flow calculation is executed based on the TM value set by the pseudo model TM setting means. Electric station data receiving means for receiving information on the transmission line and the connecting transformer installed in the electric station and information that the electric station is not subject to tidal current calculation from the second HMI or from the electric station;
From the information of the transmission line and the contact transformer received by the electric station data receiving means, the received data analysis means for analyzing the transmission line or the contact transformer that is a boundary between the calculated power system range and the outside of the calculation target range;
A replacement designation data file for storing the transmission line or the contact transformer analyzed by the received data analysis means,
The search activation means passes the transmission line or the contact transformer analyzed by the received data analysis means to the bus node search means, the transmission line branch search means and the continuous branch search means,
The calculation system designating means designates a power system for performing a power flow calculation based on the transmission line or the contact transformer analyzed by the received data analysis means and the data defined in the equipment DB file. The power system monitoring and control device according to claim 6 .

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