CN117407572B - Fault information processing method and system for distribution network emergency integrated command - Google Patents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00004—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the power network being locally controlled
Abstract
The invention discloses a fault information processing method and a system for distribution network emergency integrated command, which draw a regional power grid dynamic topological graph by setting different display frame rates for nodes and lines, control a display region by adjusting a refresh frame rate and are used for fault isolation and transfer path generation, so that fault information processing and display are integrated into a set of scheme. Therefore, the invention gives consideration to the processing efficiency of fault information and the definition of visual display, solves the industrial problem of low-cost multi-terminal linkage command, and ensures the stability and reliability of the distribution network emergency integrated command.
Description
Technical Field
The invention relates to the field of data processing, in particular to a fault information processing method and system for distribution network emergency integrated command.
Background
The distribution network emergency command system generally refers to a comprehensive application system, and generally consists of a plurality of subsystems, including information acquisition, information processing, information analysis, command scheduling, resource allocation and the like, so as to effectively coordinate resources of all parties to carry out emergency treatment and rescue. For example, the established power distribution automation master station system, the OPEN5200 system, the D5000 system, the power supply service command system, the dispatching power failure intelligent control platform and other data sources adopt the means of RPA robot process automation technology, multi-database automatic synchronization technology, interface access technology and the like, and the data is permanently stored into the relational database and the visual pattern library through the processes of data analysis, data cleaning, data storage, data visualization, real-time data updating and the like so as to realize fault judgment and emergency command.
However, in the aspect of the command function of the view, the prior art mostly adopts different colors to display important information such as a fault range, a power failure range, alarm equipment and the like, and because the distribution network line structure is complex, the related information is difficult to clearly display by distinguishing through colors or marks. Meanwhile, the bottom technical logic of the prior art is to process the structured data and then display the processing result according to the display rule (such as color distinction), on one hand, the displayed information is only used as a man-machine interaction interface and does not generate calculation value, so that the display step is negatively affected on a computer, system resources are occupied, accurate and rapid processing of the information is not facilitated, and on the other hand, multi-terminal linkage of emergency command is difficult to realize. If the display result (such as color distinction) is directly used as a calculation basis to perform fault isolation and transfer path generation, the calculation difficulty is greatly improved by disordered lines and colors, so that the problem of how to consider the fault processing capability and clear display capability of the emergency command system per se and realize multi-terminal linkage command is the problem to be solved urgently at present.
Disclosure of Invention
Aiming at the problems of large system resource occupation, low efficiency, unclear information transmission and difficulty in realizing multi-terminal linkage command caused by mutual preemption of calculation force resources in fault information processing and display in the prior art, the invention provides a fault information processing method and a fault information processing system for distribution network emergency integrated command.
The following is a technical scheme of the invention.
On one hand, the invention provides a fault information processing method for distribution network emergency integrated command, which comprises the following steps:
step 1, a main station draws a regional power grid static topological graph according to an actual circuit of a distribution network, respectively presets display frame rates for each node in the regional power grid static topological graph, and sets corresponding display frame rates for connected circuits based on connection relations between the circuits and the nodes in the regional power grid static topological graph to obtain a regional power grid dynamic topological graph;
step 2, the master station acquires real-time fault information of the distribution network, determines a fault position from a dynamic topological graph of the regional power grid based on the real-time fault information of the distribution network, and sends the fault position to a terminal with jurisdiction;
step 3, the terminal with jurisdiction adjusts the refreshing frame rate based on the display frame rate of the node or the line where the fault position is located, so that the nodes or the lines with other display frame rates are hidden, the influence range is determined according to the rest nodes or the lines, and the nodes or the lines connected with the fault position are cut off for fault isolation;
step 4, the master station determines a transfer starting point and a transfer end point according to the fault isolation result, calculates nodes or lines by using a path searching algorithm to obtain all feasible transfer paths, and resets a display frame rate by taking the feasible transfer paths as units;
and 5, the master station analyzes the feasible transfer paths by utilizing a multi-attribute decision analysis method to obtain an optimal transfer path, and transmits a corresponding operation instruction to a corresponding terminal.
In the invention, after the static topological graph of the regional power grid is constructed and drawn, the dynamic topological graph of the regional power grid is constructed by utilizing the display frame rates of different nodes and lines, which is different from the traditional scheme in which different colors are used for marking, the dynamic topological graph of the regional power grid can be displayed in a conventional state, the effect that only part of content is displayed after the refresh frame rate is adjusted, the operation amount is small during adjustment, and no additional regional division mark is needed to be set, so that the occupation of system resources is reduced. Meanwhile, the frame rate of the dynamic topological graph of the regional power grid is directly used for adjusting, the fault influence range can be determined, powerful operation processing hardware is not relied on, multi-terminal linkage required by emergency integrated command can be realized at low cost, a feasible transfer path can be obtained by using a path searching algorithm for the dynamic topological graph of the regional power grid, an additional independent scheme is not needed for data processing and display, and occupation of system resources is reduced. Therefore, the invention gives consideration to the fault information processing and displaying capability.
Preferably, in the step 1, the master station draws a static topology map of the regional power grid according to an actual line of the distribution network, including:
collecting actual line data of a power grid including position information and line information of power facilities aiming at a target area distribution network;
and generating a regional power grid static topological graph based on the power grid actual line data.
Preferably, in the step 1, a display frame rate is preset for each node in the static topological graph of the regional power grid, and a corresponding display frame rate is set for the connected lines based on a connection relationship between the lines and the nodes in the static topological graph of the regional power grid, so as to obtain a dynamic topological graph of the regional power grid, which includes:
respectively presetting a display frame rate for each switch type and transformer type node in the regional power grid static topological graph, and refreshing node images at the display frame rate;
based on the connection relation between the lines and the nodes in the regional power grid static topological graph, setting a corresponding display frame rate for each line connected with each node, converting the line into overlapping sub-lines with the corresponding number of the nodes when the line is connected with a plurality of nodes, and setting corresponding display frame rates for different sub-lines respectively to obtain the regional power grid dynamic topological graph, wherein the display frame rate is a prime number not higher than the screen refreshing frame rate, and the display frame rates of the adjacent nodes are not repeated.
Preferably, the step 2, the master station obtaining real-time fault information of the distribution network, determining the fault location from the dynamic topology map of the regional power grid based on the real-time fault information of the distribution network, includes:
collecting real-time fault information of a distribution network through a power monitoring system or related equipment, wherein the real-time fault information of the distribution network comprises fault type and position information;
and determining the node or line where the fault position is located from the regional power grid dynamic topological graph based on the fault type and the position information.
Preferably, the step 3, the terminal with jurisdiction, based on the display frame rate of the node or line where the fault location is located, adjusts the refresh frame rate to hide the nodes or lines with other display frame rates, including:
reading the display frame rate P0 of the node or the line where the fault position is located;
the screen refresh frame rate is set to P0, and from the initial frame, P0 is used as a node and line for displaying the frame rate to be displayed when each P0 frame is kept, and the rest is hidden.
Preferably, in the step 3, determining an influence range according to the remaining nodes or lines, cutting off the nodes or lines connected to the fault location for fault isolation, including:
acquiring the rest nodes or lines around the fault position, and determining an influence range;
and reusing the static topological graph of the regional power grid, extracting nodes or lines which are intersected with the influence range, and cutting off the nodes or lines within the intersection to complete fault isolation.
Preferably, in the step 4, the master station determines a forwarding start point and an end point according to a fault isolation result, calculates nodes or lines to obtain all feasible forwarding paths by using a path searching algorithm, and resets a display frame rate by taking the feasible forwarding paths as a unit, including:
determining a transfer end point according to the fault isolated node or line, and taking the nearest transformer substation as a transfer start point;
searching all potential paths from the transfer start point to the transfer end point by using a path searching algorithm;
setting a transfer power supply limiting condition, filtering the potential paths obtained by inquiry according to the transfer power supply limiting condition to obtain all feasible transfer power supply paths, and resetting the display frame rate by taking the feasible transfer power supply paths as units.
Preferably, the step 5, the master station analyzes the feasible transfer paths by using a multi-attribute decision analysis method to obtain an optimal transfer path, and issues an operation instruction to a corresponding terminal, including:
determining an evaluation object, and taking each feasible transfer path as an evaluation object;
determining an evaluation index, comprising: at least two of total length of the path, main transformer load, line load and loop closing phase angle difference;
data standardization, namely standardizing the numerical value of each index to obtain a standardized value;
determining the values of an optimal solution and a worst solution of each index, wherein the optimal solution and the worst solution are one of the maximum value or the minimum value of the index;
calculating the distance between each object and the optimal solution and the worst solution, and obtaining a distance value by calculating the distance between each feasible transfer path and the optimal solution and the worst solution;
and according to the distance value, calculating the comprehensive index value of each transfer path by using a TOPSIS algorithm, determining the path with the maximum or minimum comprehensive index value as the optimal solution, obtaining the optimal transfer path, and issuing a corresponding operation instruction to a corresponding terminal.
The invention also provides a fault information processing system for the distribution network emergency integrated command, which comprises a master station and a terminal, wherein the master station and the terminal are configured to be used for the fault information processing method for the distribution network emergency integrated command.
The invention also provides electronic equipment, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the fault information processing method for the distribution network emergency integrated command when calling the computer program in the memory.
The invention also provides a storage medium, wherein the storage medium stores computer executable instructions, and when the computer executable instructions are loaded and executed by a processor, the steps of the fault information processing method for the distribution network emergency integrated command are realized.
The essential effects of the invention include:
the invention is different from the traditional scheme that different colors are used for marking, the dynamic topological graph of the regional power grid is constructed by utilizing the display frame rates of different nodes and lines, the effect that only part of the content is displayed after the refresh frame rate is adjusted can be realized, and compared with the conventional inquiry connection relation readjustment display, the invention greatly reduces the occupation of system resources and does not generate visual confusion because the adjustment frame rate has little calculation amount. Meanwhile, the frame rate adjustment of the dynamic topological graph of the regional power grid can be directly used for determining the fault influence range, powerful operation processing hardware is not relied on, therefore, multi-terminal linkage required by emergency integrated command can be realized at low cost, and a transfer path is displayed in the same mode, so that no additional independent scheme is needed for data processing and display, reuse of the topological graph is realized, occupation of system resources is reduced, and fault information processing and displaying capability are considered.
According to the invention, all feasible transfer paths are obtained by calculating nodes or lines of the regional power grid dynamic topological graph through a path searching algorithm, and the feasible transfer paths are further analyzed by utilizing a multi-attribute decision analysis method to obtain the optimal transfer paths, and corresponding operation instructions are issued to corresponding terminals, so that the accurate generation and selection of the transfer paths are ensured, the power failure caused by faults and fault isolation can be reduced to the greatest extent, the stability and the availability of the distribution network are ensured, and a more efficient, more accurate and more convenient solution is provided for the operation management and the service of the power enterprises.
Drawings
FIG. 1 is a flow chart of an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solution will be clearly and completely described in the following in conjunction with the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that, in various embodiments of the present invention, the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
It should be understood that in the present invention, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in the present invention, "plurality" means two or more. "and/or" is merely an association relationship describing an association object, and means that three relationships may exist, for example, and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. "comprising A, B and C", "comprising A, B, C" means that all three of A, B, C comprise, "comprising A, B or C" means that one of the three comprises A, B, C, and "comprising A, B and/or C" means that any 1 or any 2 or 3 of the three comprises A, B, C.
The technical scheme of the invention is described in detail below by specific examples. Embodiments may be combined with each other and the same or similar concepts or processes may not be described in detail in some embodiments.
Examples: as shown in FIG. 1, the fault information processing method for the distribution network emergency integrated command comprises S1-S5:
s1, the master station draws a regional power grid static topological graph according to an actual circuit of the distribution network, respectively presets display frame rates for each node in the regional power grid static topological graph, and sets corresponding display frame rates for the connected circuits based on the connection relation between the circuits and the nodes in the regional power grid static topological graph to obtain a regional power grid dynamic topological graph.
S1 specifically comprises:
collecting actual line data of a power grid including position information and line information of power facilities aiming at a target area distribution network;
and generating a regional power grid static topological graph based on the power grid actual line data.
The actual line data of the power grid comprises model data of a transformer substation, a feeder line section, an electric pole, a bus, an isolating switch and the like. These data are accessed into RDS (Relational Database Service, cloud computing platform based online database service) by standardized data collection methods.
And secondly, carrying out data modeling work according to the collected distribution network model data. In the graph database, each element (such as a line, a transformer substation, a feeder line and the like) of the power grid is modeled as a node, and connection relations (such as a line connection transformer substation and a load connection line) among each element are modeled as edges, namely lines of a static topological graph of the regional power grid.
And initializing the data subjected to modeling processing into a graph database through an API standardized interface, and inquiring and analyzing the static topological graph of the power grid by utilizing the inquiring function of the graph database. The information of specific nodes or edges can be queried according to the needs, and the topological structure and the state of the power grid can be analyzed.
Meanwhile, the power grid data are updated in time, and when new elements such as lines and substations are added or changed, the corresponding node and side information in the graph database needs to be updated. The scheme adopts a timing synchronization mode to update the data periodically.
After the regional power grid static topological graph is generated, respectively presetting a display frame rate for each switch type and transformer type node in the regional power grid static topological graph, and refreshing a node image at the display frame rate;
based on the connection relation between the lines and the nodes in the regional power grid static topological graph, setting a corresponding display frame rate for each line connected with each node, converting the line into overlapping sub-lines with the corresponding number of the nodes when the line is connected with a plurality of nodes, and setting corresponding display frame rates for different sub-lines respectively to obtain the regional power grid dynamic topological graph, wherein the display frame rate is a prime number not higher than the screen refreshing frame rate, and the display frame rates of the adjacent nodes are not repeated.
For example, for a screen with a refresh rate of 30Hz, the display frame rate of the nodes may be set to a prime number of 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, etc. Since there may be more nodes, it is only necessary to ensure that the display frame rates of the neighboring nodes are not repeated, and to ensure a visual experience, a large value of the display frame rate such as 29, 23, etc. is preferable. And if the lines are connected by a plurality of nodes at the same time, converting into overlapping sub-lines corresponding to the number of the nodes and configuring different display frame rates, if the lines are connected by 2 nodes at the same time, converting into 2 overlapping sub-lines, and setting the display frame rates of 23 and 29 respectively.
In this embodiment, if all nodes and lines are desired to be displayed, the static topology map of the regional power grid is displayed directly, and if the associated line of a certain node is desired to be displayed, the corresponding display frame rate is set directly, and since the frame rates of other nodes and lines are different from each other, the display time on the time axis is staggered exactly, so as to realize hiding. The method has the advantages that when the associated line is required to be displayed, the original structural data is not required to be called or read to judge the connection relation, and only the display frame rate of the node is required to be inquired and the refreshing frame rate of the screen is required to be set, so that the operation amount of the processor and the occupation of system resources are greatly reduced. Meanwhile, the scheme is different from the scheme of color distinction, color mixing is not generated for a line connecting a plurality of nodes, when different display frame rates are selected through the mode of overlapping sub-lines, the line can still be displayed, and the complicated local line can still be clearly distinguished.
S2, the master station acquires real-time fault information of the distribution network, and determines the fault position from the dynamic topological graph of the regional power grid based on the real-time fault information of the distribution network.
S2 of the present embodiment includes:
collecting real-time fault information of a distribution network through a power monitoring system or related equipment, wherein the real-time fault information of the distribution network comprises fault type and position information;
and determining the node or line where the fault position is located from the regional power grid dynamic topological graph based on the fault type and the position information.
And S3, the terminal with jurisdiction adjusts the refreshing frame rate based on the display frame rate of the node or the line where the fault position is located, so that the nodes or the lines with other display frame rates are hidden, the influence range is determined according to the rest nodes or the lines, and the nodes or the lines connected with the fault position are cut off to perform fault isolation.
S3 comprises the following steps:
reading the display frame rate P0 of the node or the line where the fault position is located;
setting the screen refresh frame rate as P0, starting from an initial frame, displaying when the P0 is used as a node and a line for displaying the frame rate keep every P0 frame, and hiding the rest;
acquiring the rest nodes or lines around the fault position, and determining an influence range;
and reusing the static topological graph of the regional power grid, extracting nodes or lines which are intersected with the influence range, and cutting off the nodes or lines within the intersection to complete fault isolation.
For example, if the display frame rate P0 of the node or line where the fault location is located is 23, the screen refresh frame rate is set to 23, and at this time, since the time intervals of display of different nodes or lines are different, only the image with the refresh frame rate of 23 can be displayed, and the rest of the images are automatically hidden. And the part displayed around the fault location is the influence range.
If necessary, an isolation effect verification step can be executed, the fault isolation strategy is simulated and verified on the topological graph based on the tide direction, and according to the topological graph and the topological state after the isolation operation, the fault part is confirmed to be successfully isolated, and the normal operation of other power grid areas is not influenced any more.
And S4, the master station determines a transfer starting point and a transfer end point according to the fault isolation result, calculates nodes or lines by using a path searching algorithm to obtain all feasible transfer paths, and resets the display frame rate by taking the feasible transfer paths as units.
S4 comprises the following steps:
determining a transfer end point according to the fault isolated node or line, and taking the nearest transformer substation as a transfer start point;
searching all potential paths from the transfer start point to the transfer end point by using a path searching algorithm;
setting a transfer power supply limiting condition, filtering the potential paths obtained by inquiry according to the transfer power supply limiting condition to obtain all feasible transfer power supply paths, and resetting the display frame rate by taking the feasible transfer power supply paths as units.
Since the fault isolation algorithm has calculated the fault range, the end point of transfer is determined by using the result output by the fault isolation algorithm, and the start point of transfer is set as the transformer substation.
In this embodiment, neo4j is used as a graph database to store topology graphs, so after determining the starting point and the ending point of the transfer, using a cytoer query to find all possible paths from the starting point to the ending point. The transfer power supply limiting condition is generally set as the load of a node or a line, and the total load of a transfer path is limited to not exceed a specified value through a conditional statement.
After the feasible transfer paths are generated, the connection relation between the nodes and the lines is not needed to be distinguished, and different feasible transfer paths are needed to be clearly seen, so that the display frame rate is reset by taking the feasible transfer paths as units. For example, all nodes and lines of the feasible transit path a set the display frame rate 19, all nodes and lines of the feasible transit path B set the display frame rate 17, and so on. Also, by adjusting the refresh frame rate of the screen, each viable transition path can be displayed separately without confusion.
S5, the master station analyzes the feasible transfer paths by utilizing a multi-attribute decision analysis method to obtain an optimal transfer path, and issues corresponding operation instructions to the corresponding terminals.
S5 comprises the following steps:
determining an evaluation object, and taking each feasible transfer path as an evaluation object;
determining an evaluation index, comprising: at least two of total length of the path, main transformer load, line load and loop closing phase angle difference;
data standardization, namely standardizing the numerical value of each index to obtain a standardized value;
determining the values of an optimal solution and a worst solution of each index, wherein the optimal solution and the worst solution are one of the maximum value or the minimum value of the index;
calculating the distance between each object and the optimal solution and the worst solution, and obtaining a distance value by calculating the distance between each feasible transfer path and the optimal solution and the worst solution;
and according to the distance value, calculating the comprehensive index value of each transfer path by using a TOPSIS algorithm, determining the path with the maximum or minimum comprehensive index value as the optimal solution, obtaining the optimal transfer path, and issuing a corresponding operation instruction to a corresponding terminal.
It should be noted that TOPSIS is a multi-attribute decision analysis method for evaluating the performance of multiple objects under multiple indexes. The method normalizes the index value of each object and calculates the distance between the index value and the optimal solution and the worst solution to determine the composite index value of each object, and in the analysis method, the object having the smallest composite index value is regarded as the optimal solution, that is, the optimal power transfer path.
Specifically, the decision evaluation process of the power conversion path based on the TOPSIS algorithm in this embodiment mainly includes the following steps:
the first step: and determining an evaluation object, and taking each power supply transferring path as an evaluation object.
And a second step of: an evaluation index is determined, and an index for evaluating the transfer power path is determined according to the requirements and constraint conditions. The index comprises: total length of path, main transformer load, line load, loop closing phase angle difference, etc.
And a third step of: data normalization, normalizes the values of each index so that they are comparable. The index is standardized by using a linear transformation method.
Fourth step: and determining an optimal solution and a worst solution, and determining the numerical values of the optimal solution and the worst solution for each index. The optimal solution may be the maximum and the worst solution may be the minimum.
Fifth step: and calculating the distance between each object and the optimal solution and the distance between each power supply path and the optimal solution and the distance between each object and the optimal solution and the distances between each power supply path and each power supply path are calculated to obtain the relative quality degree of each path under each index. The distance is calculated using euclidean distance.
Sixth step: and (3) calculating the comprehensive index value of each object, and calculating the comprehensive index value of each power supply transferring path by using a TOPSIS algorithm according to the distance value calculated in the fifth step. The composite index value is calculated based on the index selected by the forward evaluation.
Seventh step: and (3) determining an optimal solution, and determining a path with the maximum (or minimum) comprehensive index value as the optimal solution according to the comprehensive index value of each power supply transferring path calculated in the sixth step, and taking the path as a final power supply transferring decision path.
In addition, before performing the TOPSIS algorithm, the weights of the evaluation index need to be determined to reflect their importance in the decision. The present embodiment uses expert evaluation to determine the weight of the index.
The embodiment also provides a fault information processing system for the distribution network emergency integrated command, which comprises a master station and a terminal, wherein the master station and the terminal are configured to be used for the fault information processing method for the distribution network emergency integrated command.
The embodiment also provides electronic equipment, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the fault information processing method for the distribution network emergency integrated command when calling the computer program in the memory.
The embodiment also provides a storage medium, in which computer executable instructions are stored, and when the computer executable instructions are loaded and executed by a processor, the steps of the fault information processing method for the distribution network emergency integrated command are implemented.
In summary, the embodiment is different from the conventional scheme that the marking is performed by using different colors, and the dynamic topological graph of the regional power grid is constructed by using the display frame rates of different nodes and lines, so that the effect of only displaying part of the content after the refresh frame rate is adjusted can be achieved. Meanwhile, the frame rate adjustment of the dynamic topological graph of the regional power grid can be directly used for determining the fault influence range, powerful operation processing hardware is not relied on, therefore, multi-terminal linkage required by emergency integrated command can be realized at low cost, and a transfer path is displayed in the same mode, so that no additional independent scheme is needed for data processing and display, reuse of the topological graph is realized, occupation of system resources is reduced, and fault information processing and displaying capability are considered.
In this embodiment, all feasible transfer paths are obtained by calculating nodes or lines of the regional power grid dynamic topological graph through a path searching algorithm, and the feasible transfer paths are further analyzed by utilizing a multi-attribute decision analysis method to obtain an optimal transfer path, and corresponding operation instructions are issued to corresponding terminals, so that accurate generation and selection of the transfer paths are ensured, power failure caused by faults and fault isolation can be reduced to the greatest extent, stability and availability of distribution network are ensured, and a more efficient, more accurate and more convenient solution is provided for operation management and service of power enterprises.
From the foregoing description of the embodiments, it will be appreciated by those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of a specific apparatus is divided into different functional modules to implement all or part of the functions described above.
In the embodiments provided in this application, it should be understood that the disclosed structures and methods may be implemented in other ways. For example, the embodiments described above with respect to structures are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another structure, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via interfaces, structures or units, which may be in electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and the parts shown as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a device (may be a single-chip microcomputer, a chip or the like) or a processor (processor) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The fault information processing method for the distribution network emergency integrated command is characterized by comprising the following steps of:
step 1, a main station draws a regional power grid static topological graph according to an actual circuit of a distribution network, respectively presets display frame rates for each node in the regional power grid static topological graph, and sets corresponding display frame rates for connected circuits based on connection relations between the circuits and the nodes in the regional power grid static topological graph to obtain a regional power grid dynamic topological graph;
step 2, the master station acquires real-time fault information of the distribution network, determines a fault position from a dynamic topological graph of the regional power grid based on the real-time fault information of the distribution network, and sends the fault position to a terminal with jurisdiction;
step 3, the terminal with jurisdiction adjusts the refreshing frame rate based on the display frame rate of the node or the line where the fault position is located, so that the nodes or the lines with other display frame rates are hidden, the influence range is determined according to the rest nodes or the lines, and the nodes or the lines connected with the fault position are cut off for fault isolation;
step 4, the master station determines a transfer starting point and a transfer end point according to the fault isolation result, calculates nodes or lines by using a path searching algorithm to obtain all feasible transfer paths, and resets a display frame rate by taking the feasible transfer paths as units;
step 5, the master station analyzes the feasible transfer paths by utilizing a multi-attribute decision analysis method to obtain an optimal transfer path, and issues corresponding operation instructions to corresponding terminals;
in the step 1, a display frame rate is preset for each node in the static topological graph of the regional power grid, and a corresponding display frame rate is set for the connected lines based on the connection relationship between the lines and the nodes in the static topological graph of the regional power grid to obtain a dynamic topological graph of the regional power grid, which comprises the following steps:
respectively presetting a display frame rate for each switch type and transformer type node in the regional power grid static topological graph, and refreshing node images at the display frame rate;
setting a corresponding display frame rate for each line connected with each node based on the connection relation between the lines and the nodes in the regional power grid static topological graph, converting the line into overlapping sub-lines with the corresponding node number when the line is connected with a plurality of nodes, and setting the corresponding display frame rates for different sub-lines respectively to obtain a regional power grid dynamic topological graph, wherein the display frame rate is a prime number not higher than the screen refreshing frame rate, and the display frame rates of adjacent nodes are not repeated;
step 5, the master station analyzes the feasible transfer paths by using a multi-attribute decision analysis method to obtain an optimal transfer path, and issues an operation instruction to a corresponding terminal, including:
determining an evaluation object, and taking each feasible transfer path as an evaluation object;
determining an evaluation index, comprising: at least two of total length of the path, main transformer load, line load and loop closing phase angle difference;
data standardization, namely standardizing the numerical value of each index to obtain a standardized value;
determining the values of an optimal solution and a worst solution of each index, wherein the optimal solution and the worst solution are one of the maximum value or the minimum value of the index;
calculating the distance between each object and the optimal solution and the worst solution, and obtaining a distance value by calculating the distance between each feasible transfer path and the optimal solution and the worst solution;
and according to the distance value, calculating the comprehensive index value of each transfer path by using a TOPSIS algorithm, determining the path with the maximum or minimum comprehensive index value as the optimal solution, obtaining the optimal transfer path, and issuing a corresponding operation instruction to a corresponding terminal.
2. The fault information processing method for distribution network emergency integrated command according to claim 1, wherein the step 1 of the master station drawing a regional power grid static topological graph according to a distribution network actual line comprises the following steps:
collecting actual line data of a power grid including position information and line information of power facilities aiming at a target area distribution network;
and generating a regional power grid static topological graph based on the power grid actual line data.
3. The fault information processing method for distribution network emergency integrated command according to claim 1, wherein the step 2 of the master station obtaining distribution network real-time fault information and determining the fault position from the regional power grid dynamic topological graph based on the distribution network real-time fault information comprises:
collecting real-time fault information of a distribution network through a power monitoring system or related equipment, wherein the real-time fault information of the distribution network comprises fault type and position information;
and determining the node or line where the fault position is located from the regional power grid dynamic topological graph based on the fault type and the position information.
4. The fault information processing method for distribution network emergency integrated command according to claim 1, wherein the step 3, the terminal with jurisdiction, based on the display frame rate of the node or line where the fault location is located, adjusts the refresh frame rate to hide the nodes or lines with other display frame rates, includes:
reading the display frame rate P0 of the node or the line where the fault position is located;
the screen refresh frame rate is set to P0, and from the initial frame, P0 is used as a node and line for displaying the frame rate to be displayed when each P0 frame is kept, and the rest is hidden.
5. The fault information processing method for emergency integrated command of distribution network according to claim 1, wherein in the step 3, the influence range is determined according to the remaining nodes or lines, and the node or line connected to the fault location is cut off for fault isolation, including:
acquiring the rest nodes or lines around the fault position, and determining an influence range;
and reusing the static topological graph of the regional power grid, extracting nodes or lines which are intersected with the influence range, and cutting off the nodes or lines within the intersection to complete fault isolation.
6. The method for processing fault information for emergency integrated command of distribution network according to claim 1, wherein the step 4 of determining the forwarding start point and the forwarding end point by the master station according to the fault isolation result, calculating all feasible forwarding paths by using a path searching algorithm to obtain nodes or lines, and resetting the display frame rate by taking the feasible forwarding paths as a unit comprises the following steps:
determining a transfer end point according to the fault isolated node or line, and taking the nearest transformer substation as a transfer start point;
searching all potential paths from the transfer start point to the transfer end point by using a path searching algorithm;
setting a transfer power supply limiting condition, filtering the potential paths obtained by inquiry according to the transfer power supply limiting condition to obtain all feasible transfer power supply paths, and resetting the display frame rate by taking the feasible transfer power supply paths as units.
7. A fault information processing system for distribution network emergency integrated command, comprising a master station and a terminal, characterized in that the master station and the terminal are configured to execute the fault information processing method for distribution network emergency integrated command according to any one of claims 1-6.
8. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor, when calling the computer program in the memory, implements the steps of the fault information processing method for distribution network emergency integrated command according to any one of claims 1 to 6.
9. A storage medium having stored therein computer executable instructions which, when loaded and executed by a processor, implement the steps of the fault information processing method for distribution network emergency integrated command as claimed in any one of claims 1 to 6.
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