WO2023024369A1 - Power distribution network power supply reliability assessment method based on digital twin, and device and medium - Google Patents

Power distribution network power supply reliability assessment method based on digital twin, and device and medium Download PDF

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Publication number
WO2023024369A1
WO2023024369A1 PCT/CN2021/141509 CN2021141509W WO2023024369A1 WO 2023024369 A1 WO2023024369 A1 WO 2023024369A1 CN 2021141509 W CN2021141509 W CN 2021141509W WO 2023024369 A1 WO2023024369 A1 WO 2023024369A1
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WIPO (PCT)
Prior art keywords
line
distribution
power supply
distribution line
station
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PCT/CN2021/141509
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French (fr)
Chinese (zh)
Inventor
杨帆
柴炜
马奇超
刘俊
陆冰冰
忻姿
潘丽珠
程石
仇茹嘉
项治国
任新丁
Original Assignee
国网上海市电力公司
郑州大方软件股份有限公司
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Priority to AU2021367384A priority Critical patent/AU2021367384A1/en
Publication of WO2023024369A1 publication Critical patent/WO2023024369A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • 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
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Definitions

  • the invention relates to the technical field of determining reliability of distribution network power supply, in particular to an evaluation, equipment and medium based on distribution network power supply reliability.
  • Power supply reliability is an important indicator that is used internationally and directly reflects customers' feelings about electricity use. It is an important factor that reflects the high-quality development of the world's first-tier cities, and it is also an important part of the evaluation of the electricity business environment. With the continuous improvement of users' requirements for the reliability of distribution network power supply, power companies are paying more and more attention to the optimization of distribution network grid and the improvement of power supply reliability. At present, the work is usually carried out by strengthening the management of data ledgers for the weak links of the distribution network structure, and the segmented connection of the lines, the direct capacity of the overhead lines is too large, the direct switch station ring network of the overhead line, the direct supply ring network of the substation outgoing line, etc.
  • the ledger information needs to be sorted out manually, which is time-consuming and labor-intensive, and it is difficult to ensure accuracy; therefore, a more reliable method is provided for the statistical analysis of weak links in the distribution network to intuitively determine the weak links in the structure of the distribution network , in order to further focus on the problem and focus on the goal, it has become an urgent problem to be solved in this field to carry out the optimization of the distribution network structure and the improvement of the reliability of the power supply.
  • the purpose of the present invention is to provide a digital twin-based distribution network power supply reliability evaluation method, equipment and medium with high efficiency, comprehensive information and accurate reliability results in order to overcome the above-mentioned defects in the prior art.
  • a method for evaluating the reliability of distribution network power supply based on digital twins comprising the following steps:
  • the distribution network reliability index includes power supply radius, overhead line connection, overhead line distribution section, fuse branch connection capacity, hybrid line, cable ring network node, combined pole line, switch station self-cutting configuration, outgoing line binning, weak grid, line section and load rate;
  • the power supply reliability of the distribution network to be evaluated is determined.
  • the basic data includes equipment rack topology data and equipment ledger data.
  • the equipment includes an outlet switch, a distribution line section and/or a distribution transformer.
  • the operation data includes the active energy, reactive energy, operating voltage and power factor of the outlet switch metering point.
  • the index score of the power supply radius is obtained based on the comparison result between the maximum power supply distance of the line and the standard power supply radius;
  • the index score of the overhead line connection is obtained based on the existence of the overhead line of the distribution line and the line connection situation;
  • the index score of the overhead line segment is obtained based on the existence of the overhead line of the distribution line, the existence of the segment and the number of nodes in the segment;
  • the index score of the fuse branch capacity is obtained based on whether the capacity of the distribution line node transformer exceeds the limit
  • the index score of the hybrid line is obtained based on the cable section of the distribution line and the existence of the overhead line, the type of the station building to which the overhead line branch connection equipment belongs, and the type of the station building to which the first non-line equipment connected to the outlet switch of the distribution line belongs;
  • the index score of the cable ring network node is obtained based on the existence of the switch station of the distribution line, the ring network type of the switch station supply line and the number of connection nodes of the switch station supply line;
  • the index score of the combined pole line is obtained based on the existence of the overhead line of the power distribution line and the physical pole to which the overhead line pole belongs;
  • the index score of the self-cutting configuration of the switchyard is obtained based on the existence of the switchyard of the distribution line and the configuration of the self-cutting configuration of the switchyard;
  • the index score of the out-line binning is obtained based on whether the distribution line is out-out line binning and the proportion of overhead lines in the distribution line;
  • the index score of the weak network frame is obtained based on the existence of the switch station of the distribution line, the type of the switch station, and the type of the station to which the distribution transformer belongs in the distribution line;
  • the index score of the line section is based on the cross-sectional area of the trunk line and branch line of the overhead line under the distribution line, the outlet cable or crossing cable of the distribution line substation, the direct supply line of the distribution line switch station, and the supply and exit ring of the distribution line switch station. Standardized acquisition of network lines and 10kV outgoing lines of ring sites;
  • the index score of the load rate is obtained based on the load rate result of the distribution line.
  • the line connection situation includes the connection relationship and connection type of the distribution line, and the connection type includes inter-station connection, intra-station different bus connection and invalid connection.
  • the type of the station building to which it belongs includes switchyard, ring station or box-type substation.
  • the definition of the trunk line of the overhead line is: based on the topology of the distribution line, starting from the outlet switch, the first overhead line encountered is the beginning of the trunk, and the topological analysis is continued downward, and when the branch of the overhead line is encountered, Define the longest branch as the trunk line, and the other branches as branch lines until the end nodes of the distribution line.
  • the present invention also provides an electronic device, comprising:
  • processors one or more processors
  • One or more programs stored in the memory include instructions for executing the digital twin-based distribution network power supply reliability evaluation method as described above.
  • the present invention also provides a computer-readable storage medium, including one or more programs executed by one or more processors of the electronic device, and the one or more programs include a method for executing the digital twin-based configuration as described above. Instructions on methods for evaluating reliability of grid power supply.
  • the present invention has the following beneficial effects:
  • the present invention automatically analyzes the power supply radius of distribution lines, overhead line connections, overhead line segments, fuse branch capacity, hybrid lines, cable ring network nodes, combined pole lines, and switch stations.
  • the reliability index score of each distribution network can be obtained quickly and accurately.
  • the weak link of the line is fully understood, and targeted rectification can be carried out, which can effectively improve work efficiency and improve the reliability of power supply of the distribution network.
  • the present invention fully considers each reliability index of the configured lines, can accurately reflect the power supply reliability of the distribution network, and has high evaluation accuracy.
  • Fig. 1 is a schematic flow sheet of the present invention
  • Fig. 2 is a schematic diagram of the distribution network reliability index score acquisition process of the present invention
  • Fig. 3 is a flow chart of overhead line connection analysis
  • FIG. 4 is a flowchart of the analysis of the fuse branch capacity.
  • this embodiment provides a method for evaluating the reliability of distribution network power supply based on digital twins, including the following steps: obtaining basic data such as equipment grid topology data and equipment ledger data of distribution lines, and distribution Operation data at the beginning and end of the line; based on the digital twin technology and the basic data and operation data, build a digital twin power grid, and obtain the distribution network reliability index score of the distribution line.
  • the distribution network reliability index includes power supply radius, overhead Line connection, overhead line segmentation, fuse branch capacity, hybrid line, cable ring network node, combined pole line, switch station self-cutting configuration, outgoing line binning, weak grid, line section and load rate; based on the configuration
  • the weighted fusion result of the grid reliability index scores determines the power supply reliability of the distribution network to be evaluated. This method enables power operation and maintenance personnel to intuitively understand the equipment reliability of each distribution line through the digital twin power grid simulation of digital twin technology, and fully understand the reliability of distribution line equipment, thereby effectively improving the efficiency of distribution network maintenance. This method conducts comprehensive index analysis and statistics on the weak links of distribution network reliability, and provides a basis for grid optimization and equipment transformation while ensuring accurate data, and provides great help for reliability management.
  • the distribution line equipment includes: outlet switch, distribution line section, distribution transformer, switch, etc.
  • basic data includes: equipment grid topology and equipment table account data
  • interface with the electricity consumption information collection system obtain 10kV distribution line operation data through IDP, including active power, reactive power, operating voltage, power factor, etc. See the data such as power consumption and operation data; combine the acquired basic data and operation data of the distribution line, carry out digital modeling according to the grid topology and equipment ledger, and establish the actual operation model of the distribution network.
  • the power supply radius analysis mainly calculates the maximum power supply distance of the line through topology analysis (the topology analysis process can be pushed from the outlet switch to the end, or from the end transformer to the head end), and judges whether the power supply radius of the distribution line meets the standard power supply radius. standard.
  • the index score of the power supply radius is specifically: if the power supply radius of the distribution line is less than 1.5km (power supply radius standard, for example), this item is a full score of 100 points; if the power supply radius of the power distribution line is greater than 1.5km, every 0.1km, minus 10 points, minimum 0 points.
  • the main steps of overhead line connection analysis select a distribution line, and determine whether the distribution line contains overhead lines; if the distribution line does not contain overhead lines, then end the analysis, if the distribution line If the line contains overhead lines, continue the analysis; judge whether there is a tie switch in the distribution line, if the distribution line does not include a tie switch, record that there is no tie in the distribution line, the number of connections is 0, and end analysis; if the distribution line includes a tie switch, then continue to analyze; analyze the tie line connecting the power distribution line and the tie switch; judge whether the tie line is connected with the substation and the busbar; if the tie line is the same If the substation is connected with the busbar, it is determined that the connection is invalid, and the connection situation is recorded; if the connection line is not connected with the substation and the busbar, the connection situation is recorded; the final record result, the record result includes whether the distribution line is There are connections, the number of connections, the number of connections between stations, the number of connections with different buses in a station,
  • the tie switch refers to a disconnected normally open switch, which can be connected to two different substation outlet switches from two ends respectively.
  • the connection line is a distribution line connected to the distribution line through a connection switch;
  • the inter-station connection means that the substation to which the connection line belongs is not the same substation as the substation to which the distribution line belongs;
  • the connection between different buses in the station is The substation to which the connection line belongs is the same substation as the distribution line, but the bus to which it belongs is not the same bus;
  • the connection with the bus in the station means that the substation to which the connection line belongs is the same substation as the distribution line, and the bus to which it belongs is the same busbar.
  • the index score of overhead line connection is specifically: whether there is connection in the distribution line, the number of connections is A, the number of connections between stations is B, and the number of connections between different buses in the station is C; if there is no connection, this item gets 0 points ; If the number of connections A is greater than 3, this item gets 100 points; if there are connections and the number of connections A is less than or equal to 3, the score for this item is: number of connections between stations*100/3+number of connections on different buses in the station*90 /3, that is: B*33.3+C*30 points; if the distribution line does not include overhead lines, the full score for this item is 100 points.
  • the main steps of overhead line segmentation analysis select a distribution line, determine whether the distribution line contains overhead lines; if the distribution line does not contain overhead lines, then end the analysis, if the distribution line contains overhead lines , then continue the analysis; carry out topology analysis on the distribution line, start from the outlet switch, start to record the segment when encountering the transformer, and start to record the next segment when encountering the switch end segment,
  • the transformer includes the column transformer, Distribution transformers, medium-voltage user access points
  • the switches include circuit breakers, isolating switches, pole-mounted isolating switches, load switches, pole-mounted load switches, V-type switches, T-type switches, three-position load switches, etc.; Two directly connected switches do not record segmentation; judge whether there is segmentation in the distribution line according to the segmentation situation of the record; in combination with the segmentation standard of the distribution line, judge whether the number of nodes in the distribution line exceeds the standard in the segmentation;
  • the final record results include: whether there are segments in the distribution line, the number of segments, the
  • the index score of overhead line segmentation is specifically: whether there is a segment in the distribution line, the number of segments A, the number of segments B with the number of nodes in the segment exceeding the standard, and the number of nodes in the segment that do not exceed the standard.
  • the number of segments C; the score for this item is: 100/the number of segments * the number of segments where the number of nodes in the segment does not exceed the standard, that is: 100/A*C; if the distribution line does not contain overhead lines, the full score for this item is 100 points.
  • the main steps of fuse branch capacity analysis select the distribution line, perform topology analysis from the outlet switch upwards, and judge whether the main transformer side to which the outlet switch of the distribution line belongs is connected to a small grounding resistor, whether it is connected to a arc coil, and record the result; judge whether the capacity of the distribution line node transformer exceeds the limit, and record the result.
  • the index score of the fuse branch capacity is specifically: obtain the total number A of distribution line nodes, and the number B of nodes with overrun capacity of the fuse branch distribution transformer; the score of this item is: the fuse branch distribution transformer capacity Number of excess nodes/total number of distribution line nodes*100, namely: B/A*100.
  • the main steps of hybrid line analysis select a distribution line, determine whether the distribution line contains both cable sections and overhead lines; if the distribution line contains both cable sections and overhead lines, it is judged as a hybrid line, and Record the situation; if the distribution line only contains cable segments or only overhead lines, it is judged as a non-mixed line, and record the situation; determine whether the distribution line contains overhead lines; if the distribution line contains overhead lines , then continue the analysis; if the distribution line does not contain overhead lines, then end the analysis; determine whether the station to which the overhead line branch equipment of the distribution line belongs is a switching station or ring station through topology analysis; if the distribution line If the station to which the overhead line branching equipment of the line belongs is a switching station or ring station, then record the information; if the station to which the overhead line branching equipment of the distribution line belongs is not a switching station or a ring station, then end the analysis; from the distribution The line outlet switch starts the topology, and judges whether the station to which the first connected non-line device belongs
  • the index score of the mixed line is specifically: whether the obtained distribution line is a mixed line A? Is there any overhead line branch switch station and ring station B in the distribution line? Is the outgoing line of the substation directly supplied to ring station C? A, B, and C are 1 if they exist, and 0 if they don’t exist; corresponding to the three indicators, mixed lines, overhead line branch switch stations or ring sites, and substation outlet direct supply ring sites each account for 33, 33, and 34 points respectively ; The total score of this item is: 100-33*A-33*B-34*C; if none of the three items exist, the total score of this item is 100, and if all three items exist, the score of this item is 0.
  • the main steps of cable ring network node analysis select a distribution line, and judge whether the distribution line includes a switching station; if the distribution line contains a switching station, then continue to analyze; if the distribution line does not include a switching station, Then end the analysis; according to the switch station information included in the distribution line, obtain the second distribution line to which the switch station belongs; obtain the equipment ledger and grid topology of the distribution line and the second distribution line, and obtain the Starting from the bus belonging to the line switch station, perform topology analysis on the distribution line; if the end of the line supplied by the switch station is a tie switch, then judge whether the tie switch is connected to the second power distribution line; if not the second power distribution line If it is the second power distribution line, then start from the contact switch and perform topology analysis on the second power distribution line; if the topology can be reached to the switch If there is a second power supply line in the switching station to form a single-ring network, it is determined that the supplying line of the switching station is a double-ring network; During the
  • the index score of the cable ring network node is specifically: whether there is a switching station on the power distribution line? Does the switch station meet the requirements of the cable ring network node? If there is no switch station on the distribution line, or there is a switch station on the distribution line, and the switch station meets the requirements of the cable ring network node, the full score for this item is 100 points; if there is a switch station on the distribution line, and the switch station does not meet the requirements of the cable ring network Node requirements, this item gets a full score of 0.
  • the main steps of the analysis of the combined rod line select the distribution line, and judge whether the distribution line contains overhead lines; if the distribution line does not contain overhead lines, then end the analysis; if the distribution lines contain overhead lines, Then continue the analysis; judge whether the physical pole belonging to the overhead line pole of the distribution line exists in the list of physical poles belonging to the pole of the 110kV/35kV overhead line; In the list of physical poles to which the 35kV overhead line pole belongs, it is determined that the distribution line is a combined pole line, and the information is recorded; if the physical pole to which the overhead line pole of the distribution line belongs does not exist in the 110kV/35kV overhead line pole In the list of physical poles to which it belongs, it is determined that the distribution line is not a combined pole line, and the information is recorded.
  • the index score of the combined pole line is specifically: whether there is an overhead line in the power distribution line? Is there a combined pole line? If there is no overhead line in the distribution line, or there is an overhead line in the distribution line, and there is no closed-pole line, the full score for this item is 100; if there is an overhead line for the distribution line, and there is a closed-pole line, the full score for this item is 0 point.
  • switch station self-cutting configuration analysis select a distribution line, and judge whether the distribution line contains a switch station; if the distribution line contains a switch station, continue the analysis; if the distribution line does not contain a switch station , then end the analysis; judge whether the switching station in the distribution line is equipped with a self-cutting switch, and record the information.
  • the index score for the self-cutting configuration of the switchyard is specifically: to obtain the number A of the switchyard of the distribution line?
  • the switch station is equipped with the number B of self-cutting devices? If A is 0, this item will be given full marks; if A is not 0, then this item will be scored as: the number of self-cutting devices configured in the switching station/the number of switching stations for distribution lines*100 points, that is: B/A*100 points.
  • the main steps of out-of-line consolidation analysis select distribution lines, perform topology analysis, start from out-line switches, if there are branches of connecting lines inside the station, and each branch has super-connecting lines outside the station, it is determined to be out-of-line consolidation and record information ; If the distribution line is a joint warehouse of outgoing lines, it is judged whether the proportion of the overhead line of the distribution line exceeds 50%, and if the proportion of the overhead line of the distribution line exceeds 50%, it is determined that it is a joint warehouse of the overhead line, and records information; if the proportion of overhead lines in the distribution line does not exceed 50%, it will be determined as non-overhead line consolidation, and the information will be recorded.
  • the index score for out-line binning is specifically: whether there is out-out line binning in the distribution line? Is the warehouse consolidation of outgoing lines a warehouse consolidation of overhead lines? If there is no qualifying consolidation, the score for this item is 100 points; if there is qualifying consolidation, and the qualifying consolidation is not overhead line consolidation, the score for this item is 50 points; if there is qualifying consolidation, the qualifying consolidation is overhead line consolidation warehouse, the score for this item is 0 points.
  • the main steps of weak grid analysis select the distribution line, and judge whether the distribution line contains a switch station; if the distribution line contains a switch station, continue the analysis; if the distribution line does not contain a switch station, then End the analysis; judge whether the switch station in the distribution line is a single-bus switch station according to the topology analysis; if the switch station in the distribution line is a single-bus switch station, record the information; if the switch station in the distribution line If it is not a single-bus switching station, then end the analysis; judge whether the station of the distribution transformer in the distribution line is a box-type substation; if the station of the distribution transformer in the distribution line is a box-type substation, continue the analysis; If the station to which the distribution transformer belongs is not a box-type substation in the distribution line, the analysis ends; the number of incoming lines of the box-type substation to which the distribution transformer belongs is judged according to the topology analysis; if the number of incoming lines of the box-type substation to which the distribution transformer belongs is one
  • the index score of the weak network frame is specifically: whether there is a single-bus switching station in the switching station in the power distribution line? Is there an American-style box-type radial grid at the end of the cable network under the distribution line? If there is no single-bus switching station, and there is no American-style box-type radial grid at the end of the cable network, the score for this item is 100 points; The score for this item is 50 points; if there is a single-bus switching station and there is an American-style box-type radial grid at the end of the cable network, the score for this item is 0 points.
  • the overhead line main line and overhead line branch line select the distribution line, perform topology analysis, start from the outlet switch, the first overhead line encountered is the main line, continue to carry out topology analysis downwards, and when the overhead line branch is encountered, define The longest branch is the main line, and the other branches are branch lines. Push the topology down until the end node of the distribution line, that is, the main line of the overhead line. Judgment criteria: the longest line near the outlet switch.
  • substation outlet cable select the distribution line, perform topology analysis, start from the outlet switch, if the line connecting the superconnector outside the station is a cable, it is defined as the substation outlet cable, and the substation outlet cable starts from the superconnector outside the station, All the way to the first line branch. Defined as substation outlet cables.
  • spanning cables Select the distribution line and perform topology analysis. If the previous line is an overhead line, the latter line is an overhead line, and the middle line is a cable, then it is defined as a spanning cable.
  • the switch station direct supply user (10kV large user) line select the distribution line, perform topology analysis, supply from the switch station, and directly connect to the cable line of the 10kV large user, which is defined as the switch station direct supply user (10kV large user) line .
  • switch station supply and exit ring network line select the distribution line, perform topology analysis, supply from the switch station, and connect to the cable line of the ring network, and define it as the switch station supply and exit ring network line.
  • the main steps of line section analysis select the distribution line, and judge whether the cross-sectional area of the trunk line and branch line of the overhead line under the distribution line meet the standards; if the cross-sectional area of the trunk line and branch line of the overhead line under the distribution line If the standard is not met, then record the information; if the cross-sectional area of the main trunk line and the branch line cross-sectional area of the overhead line under the distribution line meet the standard, then end the analysis; judge whether the outlet cable or the crossing cable of the substation of the power distribution line meets the standard; judge the Whether the line directly supplied by the switch station of the distribution line to the user (10kV large user) meets the standard; judge whether the ring network line supplied by the switch station of the distribution line meets the standard; judge whether the 10kV outgoing line of the ring network meets the standard.
  • the index score of the line section is specifically: obtaining the number A of wire segments in the distribution line, and the number B of wire segments that do not meet the cross-sectional area requirement.
  • the score for this item is (1-B/A)*100 points.
  • the main steps of load rate analysis select a distribution line, determine whether there is a tie switch in the distribution line, if the distribution line does not include a tie switch, record the information, obtain the operating data of the distribution line, and calculate the load rate. Calculate, record the calculation results and the distribution line does not meet the load ratio "N-1" load transfer, and end the analysis; if the distribution line contains a tie switch, continue the analysis; analyze the distribution line and the tie switch Switch connected contact lines, and obtain all contact lines; obtain the distribution lines and contact lines, basic models and operating data, and build a digital twin power grid based on digital twin technology, by setting fault points on the distribution lines, through Connect the line for load transfer, re-form the grid topology, and calculate the load rate according to the newly formed grid topology and operating data; if the load rate of the calculation result exceeds 100%, it is determined that the distribution line does not meet the requirements. Load transfer with load rate "N-1"; if the calculated load rate does not exceed 100%, it is determined that the distribution line meets load transfer with load
  • the index score of the load rate is specifically: obtaining whether the distribution line satisfies the load rate "N-1" load transfer. If the distribution line meets the load ratio "N-1" load transfer, the score for this item is 100 points, and if the distribution line does not meet the load ratio "N-1" load transfer, the score for this item is 0 points.
  • determining the power supply reliability of the distribution network to be evaluated is specifically: selecting a distribution line, and analyzing twelve items based on the distribution network reliability weak link of the distribution line
  • the analysis results are scored according to the 10-point system for the 12 indicators, combined with the score results of the 12 indicators and the weight of the 12 analysis content, the indicators are evaluated and scored according to the 10-point system to determine the reliable power supply of the distribution network to be evaluated sex.
  • the above functions are realized in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .
  • This embodiment provides an electronic device, including one or more processors, memory, and one or more programs stored in the memory, and the one or more programs include a digital-based Instructions for twin distribution network power supply reliability evaluation methods.

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Abstract

The present invention relates to a power distribution network power supply reliability assessment method based on a digital twin, and a device and a medium. The method comprises the following steps: acquiring basic data of a power distribution line and operation data of head and tail ends of the power distribution line; constructing a digital twin power grid on the basis of digital twin technology, the basic data and the operation data, and acquiring scores of power distribution network reliability indexes of the power distribution line, wherein the power distribution network reliability indexes comprise a power supply radius, an overhead line contact, an overhead line segment, a fuse branch connection capacity, a hybrid line, a cable ring network node, a pole combination line, a switching station auto-switching configuration, outgoing line splicing, a weak network rack, a line cross section and a load rate; and on the basis of a weighted fusion result of the scores of the power distribution network reliability indexes, determining a power distribution network power supply reliability to be assessed. Compared with the prior art, the present invention has the advantages of high efficiency, comprehensive information, an accurate reliability result, etc.

Description

基于数字孪生的配电网供电可靠性评价方法、设备及介质Distribution network power supply reliability evaluation method, equipment and medium based on digital twin 技术领域technical field
本发明涉及配电网供电可靠性确定技术领域，尤其是涉及一种基于配电网供电可靠性评价、设备及介质。The invention relates to the technical field of determining reliability of distribution network power supply, in particular to an evaluation, equipment and medium based on distribution network power supply reliability.
背景技术Background technique
供电可靠性，是国际通用的、直接反映客户用电感受的重要指标，是体现世界一线城市高质量发展的一项重要因素，又是电力营商环境评价的重要组成部分。随着用户对配电网供电可靠性要求的不断提高，电力公司对开展配电网网架优化和供电可靠性提升工作越来越重视。目前，针对配电网网架薄弱环节通常通过加强数据台账管理来开展工作，对线路分段联络情况、架空线路直接容量过大、架空线路直接开关站环网站、变电站出线直供环网站等台账信息需人工梳理，耗时耗力，且难以保证准确性；因此针对配电网薄弱环节的统计分析，提供一种更可靠的方法，直观地确定配电网网架结构中的薄弱环节，为进一步聚焦问题、围绕目标，扎实开展配电网网架优化和供电可靠性提升工作，成为本领域亟待解决的问题。Power supply reliability is an important indicator that is used internationally and directly reflects customers' feelings about electricity use. It is an important factor that reflects the high-quality development of the world's first-tier cities, and it is also an important part of the evaluation of the electricity business environment. With the continuous improvement of users' requirements for the reliability of distribution network power supply, power companies are paying more and more attention to the optimization of distribution network grid and the improvement of power supply reliability. At present, the work is usually carried out by strengthening the management of data ledgers for the weak links of the distribution network structure, and the segmented connection of the lines, the direct capacity of the overhead lines is too large, the direct switch station ring network of the overhead line, the direct supply ring network of the substation outgoing line, etc. The ledger information needs to be sorted out manually, which is time-consuming and labor-intensive, and it is difficult to ensure accuracy; therefore, a more reliable method is provided for the statistical analysis of weak links in the distribution network to intuitively determine the weak links in the structure of the distribution network , in order to further focus on the problem and focus on the goal, it has become an urgent problem to be solved in this field to carry out the optimization of the distribution network structure and the improvement of the reliability of the power supply.
为了解决以上存在的问题，技术人员一直在寻求一种理想的技术解决方案。In order to solve the above existing problems, technicians have been seeking an ideal technical solution.
发明内容Contents of the invention
本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种效率高、信息全面、可靠性结果准确的基于数字孪生的配电网供电可靠性评价方法、设备及介质。The purpose of the present invention is to provide a digital twin-based distribution network power supply reliability evaluation method, equipment and medium with high efficiency, comprehensive information and accurate reliability results in order to overcome the above-mentioned defects in the prior art.
本发明的目的可以通过以下技术方案来实现：The purpose of the present invention can be achieved through the following technical solutions:
一种基于数字孪生的配电网供电可靠性评价方法，包括以下步骤：A method for evaluating the reliability of distribution network power supply based on digital twins, comprising the following steps:
获取配电线路的基础数据和配电线路首末端运行数据；Obtain the basic data of the distribution line and the operation data of the beginning and end of the distribution line;
基于数字孪生技术以及所述基础数据和运行数据，构建数字孪生电网，获取配电线路的配电网可靠性指标分数，所述配电网可靠性指标包括供电半径、架空线联 络、架空线分段、熔丝支接容量、混合线路、电缆环网节点、合杆线路、开关站自切配置、出线拼仓、薄弱网架、线路截面和负载率；Based on the digital twin technology and the basic data and operation data, the digital twin power grid is constructed, and the distribution network reliability index score of the distribution line is obtained. The distribution network reliability index includes power supply radius, overhead line connection, overhead line distribution section, fuse branch connection capacity, hybrid line, cable ring network node, combined pole line, switch station self-cutting configuration, outgoing line binning, weak grid, line section and load rate;
基于所述配电网可靠性指标分数的加权融合结果，确定待评价的配电网供电可靠性。Based on the weighted fusion results of the distribution network reliability index scores, the power supply reliability of the distribution network to be evaluated is determined.
进一步地，所述基础数据包括设备网架拓扑数据和设备台账数据。Further, the basic data includes equipment rack topology data and equipment ledger data.
进一步地，所述设备包括出线开关、配电线段和/或配电变压器。Further, the equipment includes an outlet switch, a distribution line section and/or a distribution transformer.
进一步地，所述运行数据包括出线开关计量点有功电量、无功电量、运行电压和功率因数。Further, the operation data includes the active energy, reactive energy, operating voltage and power factor of the outlet switch metering point.
进一步地，所述供电半径的指标分数基于线路最大供电距离与标准供电半径的比较结果获取；Further, the index score of the power supply radius is obtained based on the comparison result between the maximum power supply distance of the line and the standard power supply radius;
所述架空线联络的指标分数基于配电线路的架空线存在情况及线路联络情况获取；The index score of the overhead line connection is obtained based on the existence of the overhead line of the distribution line and the line connection situation;
所述架空线分段的指标分数基于配电线路的架空线存在情况、分段存在情况及分段内节点数量获取；The index score of the overhead line segment is obtained based on the existence of the overhead line of the distribution line, the existence of the segment and the number of nodes in the segment;
所述熔丝支接容量的指标分数基于配电线路节点变压器容量是否超过限制获取；The index score of the fuse branch capacity is obtained based on whether the capacity of the distribution line node transformer exceeds the limit;
所述混合线路的指标分数基于配电线路的电缆段和架空线存在情况、架空线支接设备所属站房类型及配电线路出线开关连接的第一个非线路设备所属站房类型获取；The index score of the hybrid line is obtained based on the cable section of the distribution line and the existence of the overhead line, the type of the station building to which the overhead line branch connection equipment belongs, and the type of the station building to which the first non-line equipment connected to the outlet switch of the distribution line belongs;
所述电缆环网节点的指标分数基于配电线路的开关站存在情况、开关站供出线路存在的环网类型以及开关站供出线路连接节点数量获取；The index score of the cable ring network node is obtained based on the existence of the switch station of the distribution line, the ring network type of the switch station supply line and the number of connection nodes of the switch station supply line;
所述合杆线路的指标分数基于配电线路的架空线存在情况及架空线电杆所属物理杆情况获取；The index score of the combined pole line is obtained based on the existence of the overhead line of the power distribution line and the physical pole to which the overhead line pole belongs;
所述开关站自切配置的指标分数基于配电线路的开关站存在情况及开关站自切配置情况获取；The index score of the self-cutting configuration of the switchyard is obtained based on the existence of the switchyard of the distribution line and the configuration of the self-cutting configuration of the switchyard;
所述出线拼仓的指标分数基于配电线路是否为出线拼仓及配电线路架空线占比获取；The index score of the out-line binning is obtained based on whether the distribution line is out-out line binning and the proportion of overhead lines in the distribution line;
所述薄弱网架的指标分数基于配电线路的开关站存在情况、开关站类型及配电线路中配变所属站房类型获取；The index score of the weak network frame is obtained based on the existence of the switch station of the distribution line, the type of the switch station, and the type of the station to which the distribution transformer belongs in the distribution line;
所述线路截面的指标分数基于配电线路下架空线主干线截面积和支线截面积 以及配电线路变电站出口电缆或跨越电缆、配电线路开关站直供用户线路、配电线路开关站供出环网线路和环网站10kV出线的标准性获取；The index score of the line section is based on the cross-sectional area of the trunk line and branch line of the overhead line under the distribution line, the outlet cable or crossing cable of the distribution line substation, the direct supply line of the distribution line switch station, and the supply and exit ring of the distribution line switch station. Standardized acquisition of network lines and 10kV outgoing lines of ring sites;
所述负载率的指标分数基于配电线路的负载率结果获取。The index score of the load rate is obtained based on the load rate result of the distribution line.
进一步地，所述线路联络情况包括配电线路的联络关系及联络类型，所述联络类型包括站间联络、站内不同母线联络和无效联络。Further, the line connection situation includes the connection relationship and connection type of the distribution line, and the connection type includes inter-station connection, intra-station different bus connection and invalid connection.
进一步地，所述所属站房类型包括开关站、环网站或箱式变电站。Further, the type of the station building to which it belongs includes switchyard, ring station or box-type substation.
进一步地，所述架空线主干线的定义为：基于配电线路拓扑，从出线开关开始，遇到的第一条架空线为主干开始处，继续向下进行拓扑分析，遇到架空线分支，定义最长的一个分支为主干线，其他分支为支线，直到配电线路末端节点。Further, the definition of the trunk line of the overhead line is: based on the topology of the distribution line, starting from the outlet switch, the first overhead line encountered is the beginning of the trunk, and the topological analysis is continued downward, and when the branch of the overhead line is encountered, Define the longest branch as the trunk line, and the other branches as branch lines until the end nodes of the distribution line.
本发明还提供一种电子设备，包括：The present invention also provides an electronic device, comprising:
一个或多个处理器；one or more processors;
存储器；和memory; and
被存储在存储器中的一个或多个程序，所述一个或多个程序包括用于执行如上所述基于数字孪生的配电网供电可靠性评价方法的指令。One or more programs stored in the memory, the one or more programs include instructions for executing the digital twin-based distribution network power supply reliability evaluation method as described above.
本发明还提供一种计算机可读存储介质，包括供电子设备的一个或多个处理器执行的一个或多个程序，所述一个或多个程序包括用于执行如上所述基于数字孪生的配电网供电可靠性评价方法的指令。The present invention also provides a computer-readable storage medium, including one or more programs executed by one or more processors of the electronic device, and the one or more programs include a method for executing the digital twin-based configuration as described above. Instructions on methods for evaluating reliability of grid power supply.
与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
1、本发明基于供电可靠性数字孪生技术，对配电线路的供电半径、架空线联络、架空线分段、熔丝支接容量、混合线路、电缆环网节点、合杆线路、开关站自切配置、出线拼仓、薄弱网架、线路截面、负载率等进行数字化分析，可以快速、准确地获得每个配电网可靠性指标的分数，电力运维人员可以做到对每一条配电线路的薄弱环节充分了解，可以进行针对性的整改处理，可以有效的提高工作效率，提高配电网的供电可靠性。1. Based on the digital twin technology of power supply reliability, the present invention automatically analyzes the power supply radius of distribution lines, overhead line connections, overhead line segments, fuse branch capacity, hybrid lines, cable ring network nodes, combined pole lines, and switch stations. Through digital analysis of cutting configuration, outlet pooling, weak grid, line section, load rate, etc., the reliability index score of each distribution network can be obtained quickly and accurately. The weak link of the line is fully understood, and targeted rectification can be carried out, which can effectively improve work efficiency and improve the reliability of power supply of the distribution network.
2、本发明对配置线路的每个可靠性指标都进行全面考虑，能够精确反映配电网的供电可靠性情况，评价精度高。2. The present invention fully considers each reliability index of the configured lines, can accurately reflect the power supply reliability of the distribution network, and has high evaluation accuracy.
附图说明Description of drawings
图1为本发明的流程示意图；Fig. 1 is a schematic flow sheet of the present invention;
图2为本发明配电网可靠性指标分数获取过程示意图；Fig. 2 is a schematic diagram of the distribution network reliability index score acquisition process of the present invention;
图3为架空线联络分析流程图；Fig. 3 is a flow chart of overhead line connection analysis;
图4为熔丝支接容量分析流程图。Figure 4 is a flowchart of the analysis of the fuse branch capacity.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明进行详细说明。本实施例以本发明技术方案为前提进行实施，给出了详细的实施方式和具体的操作过程，但本发明的保护范围不限于下述的实施例。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
实施例1Example 1
如图1所示，本实施例提供一种基于数字孪生的配电网供电可靠性评价方法，包括以下步骤：获取配电线路的设备网架拓扑数据和设备台账数据等基础数据以及配电线路首末端运行数据；基于数字孪生技术以及所述基础数据和运行数据，构建数字孪生电网，获取配电线路的配电网可靠性指标分数，所述配电网可靠性指标包括供电半径、架空线联络、架空线分段、熔丝支接容量、混合线路、电缆环网节点、合杆线路、开关站自切配置、出线拼仓、薄弱网架、线路截面和负载率；基于所述配电网可靠性指标分数的加权融合结果，确定待评价的配电网供电可靠性。该方法通过数字孪生技术的数字孪生电网仿真，使得电力运维人员可以直观的了解每一条配电线路的设备可靠性，对配电线路设备可靠性充分了解，从而有效提高配电网检修效率。该方法对配电网可靠性薄弱环节进行了完善的指标分析及统计，在确保数据准确的情况下为网架优化，设备改造提供依据，对可靠性管理工作的提供了极大的帮助。As shown in Figure 1, this embodiment provides a method for evaluating the reliability of distribution network power supply based on digital twins, including the following steps: obtaining basic data such as equipment grid topology data and equipment ledger data of distribution lines, and distribution Operation data at the beginning and end of the line; based on the digital twin technology and the basic data and operation data, build a digital twin power grid, and obtain the distribution network reliability index score of the distribution line. The distribution network reliability index includes power supply radius, overhead Line connection, overhead line segmentation, fuse branch capacity, hybrid line, cable ring network node, combined pole line, switch station self-cutting configuration, outgoing line binning, weak grid, line section and load rate; based on the configuration The weighted fusion result of the grid reliability index scores determines the power supply reliability of the distribution network to be evaluated. This method enables power operation and maintenance personnel to intuitively understand the equipment reliability of each distribution line through the digital twin power grid simulation of digital twin technology, and fully understand the reliability of distribution line equipment, thereby effectively improving the efficiency of distribution network maintenance. This method conducts comprehensive index analysis and statistics on the weak links of distribution network reliability, and provides a basis for grid optimization and equipment transformation while ensuring accurate data, and provides great help for reliability management.
上述基础数据以及配电线路首末端运行数据的获取过程具体为：The above-mentioned basic data and the acquisition process of the operation data at the head and end of the distribution line are as follows:
与PMS2.0***做接口，获取10kV配电线路设备的基础数据，其中配电线路设备包括：出线开关、配电线段、配电变压器、开关等；基础数据包括：设备网架拓扑和设备台账数据；与用电信息采集***做接口，通过IDP获取10kV配电线路运行数据，包括出线开关计量点有功电量、无功电量、运行电压、功率因数等数据，获取配电变压器计量点的抄见电量，运行数据等数据；结合获取到的配电线路基础数据和运行数据，根据网架拓扑和设备台账进行数字化建模，建立配电网实际运行模型。Interface with the PMS2.0 system to obtain the basic data of 10kV distribution line equipment, among which the distribution line equipment includes: outlet switch, distribution line section, distribution transformer, switch, etc.; basic data includes: equipment grid topology and equipment table account data; interface with the electricity consumption information collection system, obtain 10kV distribution line operation data through IDP, including active power, reactive power, operating voltage, power factor, etc. See the data such as power consumption and operation data; combine the acquired basic data and operation data of the distribution line, carry out digital modeling according to the grid topology and equipment ledger, and establish the actual operation model of the distribution network.
如图2所示，上述各配电网可靠性指标的分数获取具体过程如下：As shown in Figure 2, the specific process of obtaining the scores of the above distribution network reliability indicators is as follows:
1、供电半径1. Power supply radius
供电半径分析主要通过拓扑分析来计算线路最大供电距离(拓扑分析过程可以从出线开关开始往末端推，也可以从末端变压器往首端推)，并根据标准供电半径判断配电线路供电半径是否满足标准。The power supply radius analysis mainly calculates the maximum power supply distance of the line through topology analysis (the topology analysis process can be pushed from the outlet switch to the end, or from the end transformer to the head end), and judges whether the power supply radius of the distribution line meets the standard power supply radius. standard.
本实施例中，供电半径的指标分数具体为：如果配电线路供电半径小于1.5km(供电半径标准，举例说明)，该项为满分100分，如果配电线路供电半径大于1.5km，每超过0.1km,减去10分，最低0分。In this embodiment, the index score of the power supply radius is specifically: if the power supply radius of the distribution line is less than 1.5km (power supply radius standard, for example), this item is a full score of 100 points; if the power supply radius of the power distribution line is greater than 1.5km, every 0.1km, minus 10 points, minimum 0 points.
2、架空线联络2. Overhead line contact
如图3所示，架空线联络分析的主要步骤：选择配电线路，判断所述配电线路是否包含架空线；若所述配电线路不包含架空线，则结束分析，若所述配电线路中包含架空线，则继续分析；判断所述配电线路是否存在联络开关，若所述配电线路不包含联络开关，则记录所述配电线路不存在联络，联络数量为0，并结束分析；若所述配电线路包含联络开关，则继续分析；分析所述配电线路与联络开关相连的联络线路；判断所述联络线路是否为同变电站同母线联络；若所述联络线路为同变电站同母线联络，则判定联络为无效联络，并记录联络情况；若所述联络线路不为同变电站同母线联络，则记录联络情况；最终记录结果，所述记录结果包括所述配电线路是否存在联络、联络数量、站间联络数量、站内不同母线联络数量、站内同母线联络数量，以及联络线路。As shown in Figure 3, the main steps of overhead line connection analysis: select a distribution line, and determine whether the distribution line contains overhead lines; if the distribution line does not contain overhead lines, then end the analysis, if the distribution line If the line contains overhead lines, continue the analysis; judge whether there is a tie switch in the distribution line, if the distribution line does not include a tie switch, record that there is no tie in the distribution line, the number of connections is 0, and end analysis; if the distribution line includes a tie switch, then continue to analyze; analyze the tie line connecting the power distribution line and the tie switch; judge whether the tie line is connected with the substation and the busbar; if the tie line is the same If the substation is connected with the busbar, it is determined that the connection is invalid, and the connection situation is recorded; if the connection line is not connected with the substation and the busbar, the connection situation is recorded; the final record result, the record result includes whether the distribution line is There are connections, the number of connections, the number of connections between stations, the number of connections with different buses in a station, the number of connections with the same bus in a station, and the connection lines.
其中，所述联络开关是指断开的常开开关，分别由两端拓扑可以拓扑到两个不同的变电站出线开关。所述联络线路为通过联络开关与所述配电线路连接的配电线路；所述站间联络是指联络线路所属变电站与所述配电线路所属变电站非同一变电站；所述站内不同母线联络是指联络线路所属变电站与所述配电线路为同一变电站，但是所属母线不为同一母线；所述站内同母线联络是指联络线路所属变电站与所述配电线路为同一变电站，并且所属母线为同一母线。Wherein, the tie switch refers to a disconnected normally open switch, which can be connected to two different substation outlet switches from two ends respectively. The connection line is a distribution line connected to the distribution line through a connection switch; the inter-station connection means that the substation to which the connection line belongs is not the same substation as the substation to which the distribution line belongs; the connection between different buses in the station is The substation to which the connection line belongs is the same substation as the distribution line, but the bus to which it belongs is not the same bus; the connection with the bus in the station means that the substation to which the connection line belongs is the same substation as the distribution line, and the bus to which it belongs is the same busbar.
本实施例中，架空线联络的指标分数具体为：获取配电线路是否存在联络，联络数量A，站间联络数量B，站内不同母线联络数量C；如果不存在联络，则该项得0分；如果联络数量A大于3个，则该项得100分；如果存在联络并且联络数量A小于等于3个，则该项得分为：站间联络数量*100/3+站内不同母线联络数量*90/3，即：B*33.3+C*30分；如果该配电线路不包含架空线，则该项满分得100分。In this embodiment, the index score of overhead line connection is specifically: whether there is connection in the distribution line, the number of connections is A, the number of connections between stations is B, and the number of connections between different buses in the station is C; if there is no connection, this item gets 0 points ; If the number of connections A is greater than 3, this item gets 100 points; if there are connections and the number of connections A is less than or equal to 3, the score for this item is: number of connections between stations*100/3+number of connections on different buses in the station*90 /3, that is: B*33.3+C*30 points; if the distribution line does not include overhead lines, the full score for this item is 100 points.
3、架空线分段3. Overhead line segmentation
架空线分段分析的主要步骤：选择配电线路，判断所述配电线路是否包含架空线；若所述配电线路不包含架空线，则结束分析，若所述配电线路中包含架空线，则继续分析；对所述配电线路进行拓扑分析，从出线开关开始，遇到变压器开始记录分段，遇到开关结束分段并开始记录下一个分段，所述变压器包括柱上变压器、配电变压器、中压用户接入点，所述开关包括断路器、隔离开关、柱上隔离开关、负荷开关、柱上负荷开关、V型开关、T型开关、三工位负荷开关等；两个直接相连的开关不记录分段；根据记录的分段情况判断所述配电线路是否存在分段；结合配电线路分段标准，判断所述配电线路是否存在分段内节点数量超标；最终记录结果，包括：所述配电线路是否存在分段、分段数量、每个分段内节点数量、是否存在分段内节点数量超标情况，并记录每个分段内节点详细信息。The main steps of overhead line segmentation analysis: select a distribution line, determine whether the distribution line contains overhead lines; if the distribution line does not contain overhead lines, then end the analysis, if the distribution line contains overhead lines , then continue the analysis; carry out topology analysis on the distribution line, start from the outlet switch, start to record the segment when encountering the transformer, and start to record the next segment when encountering the switch end segment, the transformer includes the column transformer, Distribution transformers, medium-voltage user access points, the switches include circuit breakers, isolating switches, pole-mounted isolating switches, load switches, pole-mounted load switches, V-type switches, T-type switches, three-position load switches, etc.; Two directly connected switches do not record segmentation; judge whether there is segmentation in the distribution line according to the segmentation situation of the record; in combination with the segmentation standard of the distribution line, judge whether the number of nodes in the distribution line exceeds the standard in the segmentation; The final record results include: whether there are segments in the distribution line, the number of segments, the number of nodes in each segment, whether the number of nodes in a segment exceeds the standard, and record the detailed information of nodes in each segment.
本实施例中，架空线分段的指标分数具体为：获取配电线路是否存在分段，分段数量A，分段内节点数量超标的分段数量B,分段内节点数量不超标的分段数量C；该项得分为：100/分段数量*分段内节点数量不超标的分段数量，即：100/A*C；如果该配电线路不包含架空线，则该项满分得100分。In this embodiment, the index score of overhead line segmentation is specifically: whether there is a segment in the distribution line, the number of segments A, the number of segments B with the number of nodes in the segment exceeding the standard, and the number of nodes in the segment that do not exceed the standard. The number of segments C; the score for this item is: 100/the number of segments * the number of segments where the number of nodes in the segment does not exceed the standard, that is: 100/A*C; if the distribution line does not contain overhead lines, the full score for this item is 100 points.
4、熔丝支接容量4. Fuse branch connection capacity
如图4所示，熔丝支接容量分析的主要步骤：选择配电线路，由出线开关向上进行拓扑分析，判断所述配电线路出线开关所属主变侧是否连接接地小电阻，是否连接消弧线圈，并记录结果；判断所述配电线路节点变压器容量是否超过限制，并记录结果。As shown in Figure 4, the main steps of fuse branch capacity analysis: select the distribution line, perform topology analysis from the outlet switch upwards, and judge whether the main transformer side to which the outlet switch of the distribution line belongs is connected to a small grounding resistor, whether it is connected to a arc coil, and record the result; judge whether the capacity of the distribution line node transformer exceeds the limit, and record the result.
本实施例中，熔丝支接容量的指标分数具体为：获取配电线路节点总数量A，熔丝支接配变容量超限节点数量B；该项得分为：熔丝支接配变容量超限节点数量/配电线路节点总数量*100，即：B/A*100。In this embodiment, the index score of the fuse branch capacity is specifically: obtain the total number A of distribution line nodes, and the number B of nodes with overrun capacity of the fuse branch distribution transformer; the score of this item is: the fuse branch distribution transformer capacity Number of excess nodes/total number of distribution line nodes*100, namely: B/A*100.
5、混合线路5. Hybrid line
混合线路分析的主要步骤：选择配电线路，判断所述配电线路是否既包含电缆段又包含架空线；若所述配电线路既包含电缆段又包含架空线，则判断为混合线路，并记录情况；若所述配电线路只包含电缆段或者只包含架空线，则判断为非混合线路，并记录情况；判断所述配电线路是否包含架空线；若所述配电线路包含架空线，则继续分析；若所述配电线路不包含架空线，则结束分析；通过拓扑分析判断所述配电线路架空线支接设备所属站房是否为开关站或者环网站；若所述配电线路架空线支接设备所属站房是开关站或者环网站，则记录信息；若所述配电线路架空线支 接设备所属站房不是开关站或者环网站，则结束分析；从所述配电线路出线开关开始拓扑，判断连接的第一个非线路设备所属站房是否为环网站；若所述非线路设备所属站房是环网站，则记录信息；若所述非线路设备所属站房不是环网站，则结束分析。The main steps of hybrid line analysis: select a distribution line, determine whether the distribution line contains both cable sections and overhead lines; if the distribution line contains both cable sections and overhead lines, it is judged as a hybrid line, and Record the situation; if the distribution line only contains cable segments or only overhead lines, it is judged as a non-mixed line, and record the situation; determine whether the distribution line contains overhead lines; if the distribution line contains overhead lines , then continue the analysis; if the distribution line does not contain overhead lines, then end the analysis; determine whether the station to which the overhead line branch equipment of the distribution line belongs is a switching station or ring station through topology analysis; if the distribution line If the station to which the overhead line branching equipment of the line belongs is a switching station or ring station, then record the information; if the station to which the overhead line branching equipment of the distribution line belongs is not a switching station or a ring station, then end the analysis; from the distribution The line outlet switch starts the topology, and judges whether the station to which the first connected non-line device belongs is a ring site; if the station to which the non-line device belongs is a ring site, record the information; if the station to which the non-line device belongs is not ring site, the analysis ends.
本实施例中，混合线路的指标分数具体为：获取配电线路是否为混合线路A？配电线路是否存在架空线支接开关站、环网站B？变电站出线是否直供环网站C？A、B、C分别是存在为1，不存在为0；对应三项指标，混合线路、架空线支接开关站或环网站、变电站出线直供环网站每项分别占33、33、34分；该项总得分为：100-33*A-33*B-34*C；如果三项都不存在，该项总得分为100，如果三项都存在，该项得分为0。In this embodiment, the index score of the mixed line is specifically: whether the obtained distribution line is a mixed line A? Is there any overhead line branch switch station and ring station B in the distribution line? Is the outgoing line of the substation directly supplied to ring station C? A, B, and C are 1 if they exist, and 0 if they don’t exist; corresponding to the three indicators, mixed lines, overhead line branch switch stations or ring sites, and substation outlet direct supply ring sites each account for 33, 33, and 34 points respectively ; The total score of this item is: 100-33*A-33*B-34*C; if none of the three items exist, the total score of this item is 100, and if all three items exist, the score of this item is 0.
6、电缆环网节点6. Cable ring network node
电缆环网节点分析的主要步骤：选择配电线路，判断所述配电线路是否包含开关站；若所述配电线路包含开关站，则继续分析；若所述配电线路不包含开关站，则结束分析；根据所述配电线路包含开关站信息，获取开关站所属第二配电线路；获取所述配电线路及第二配电线路设备台账及网架拓扑，从所述配电线路开关站所属母线开始，对所述配电线路进行拓扑分析；若开关站供出线路末端为联络开关，则判断所述联络开关连接联络线路是否为第二配电线路；若不是第二配电线路，则说明该开关站供出线路未形成环路，结束分析；若是第二配电线路，则从该联络开关开始，对所述第二配电线路进行拓扑分析；若能拓扑到所述开关站第二配电线路所属母线，则判定为所述开关站供出线路为单环网；若存在开关站第二条供出线路形成单环网，则判定该开关站供出线路为双环网；在进行拓扑分析过程中，记录开关站供出线路连接节点数量；拓扑分析结束后根据开关站供出线路为单环网或双环网，以及开关站供出线路连接节点数是否大于6个或12个，来判断该配电线路是否满足电缆环网节点要求。The main steps of cable ring network node analysis: select a distribution line, and judge whether the distribution line includes a switching station; if the distribution line contains a switching station, then continue to analyze; if the distribution line does not include a switching station, Then end the analysis; according to the switch station information included in the distribution line, obtain the second distribution line to which the switch station belongs; obtain the equipment ledger and grid topology of the distribution line and the second distribution line, and obtain the Starting from the bus belonging to the line switch station, perform topology analysis on the distribution line; if the end of the line supplied by the switch station is a tie switch, then judge whether the tie switch is connected to the second power distribution line; if not the second power distribution line If it is the second power distribution line, then start from the contact switch and perform topology analysis on the second power distribution line; if the topology can be reached to the switch If there is a second power supply line in the switching station to form a single-ring network, it is determined that the supplying line of the switching station is a double-ring network; During the topology analysis process, record the number of connected nodes of the switchyard supply line; after the topology analysis is completed, judge the switchyard supply line according to whether it is a single-ring network or a double-ring network, and whether the number of switchyard supply line connection nodes is greater than 6 or 12. Whether the distribution line meets the node requirements of the cable ring network.
本实施例中，电缆环网节点的指标分数具体为：获取配电线路是否存在开关站？开关站是否满足电缆环网节点要求？如果配电线路不存在开关站，或者配电线路存在开关站，并且开关站满足电缆环网节点要求，该项得满分100分；如果配电线路存在开关站，并且开关站不满足电缆环网节点要求，该项得满分0分。In this embodiment, the index score of the cable ring network node is specifically: whether there is a switching station on the power distribution line? Does the switch station meet the requirements of the cable ring network node? If there is no switch station on the distribution line, or there is a switch station on the distribution line, and the switch station meets the requirements of the cable ring network node, the full score for this item is 100 points; if there is a switch station on the distribution line, and the switch station does not meet the requirements of the cable ring network Node requirements, this item gets a full score of 0.
7、合杆线路7. Combined pole line
合杆线路分析的主要步骤：选择配电线路，判断所述配电线路是否包含架空线； 若所述配电线路不包含架空线，则结束分析，若所述配电线路中包含架空线，则继续分析；判断所述配电线路架空线电杆所属物理杆是否存在于110kV/35kV架空线路电杆所属物理杆列表中；若所述配电线路架空线电杆所属物理杆存在于110kV/35kV架空线路电杆所属物理杆列表中，则判定所述配电线路是合杆线路，并记录信息；若所述配电线路架空线电杆所属物理杆不存在于110kV/35kV架空线路电杆所属物理杆列表中，则判定所述配电线路不是合杆线路，并记录信息。The main steps of the analysis of the combined rod line: select the distribution line, and judge whether the distribution line contains overhead lines; if the distribution line does not contain overhead lines, then end the analysis; if the distribution lines contain overhead lines, Then continue the analysis; judge whether the physical pole belonging to the overhead line pole of the distribution line exists in the list of physical poles belonging to the pole of the 110kV/35kV overhead line; In the list of physical poles to which the 35kV overhead line pole belongs, it is determined that the distribution line is a combined pole line, and the information is recorded; if the physical pole to which the overhead line pole of the distribution line belongs does not exist in the 110kV/35kV overhead line pole In the list of physical poles to which it belongs, it is determined that the distribution line is not a combined pole line, and the information is recorded.
本实施例中，合杆线路的指标分数具体为：获取配电线路是否存在架空线？是否存在合杆线路？如果配电线路不存在架空线，或者配电线路存在架空线，并且不存在合杆线路，该项得满分100分；如果配电线路存在架空线，并且存在合杆线路，该项得满分0分。In this embodiment, the index score of the combined pole line is specifically: whether there is an overhead line in the power distribution line? Is there a combined pole line? If there is no overhead line in the distribution line, or there is an overhead line in the distribution line, and there is no closed-pole line, the full score for this item is 100; if there is an overhead line for the distribution line, and there is a closed-pole line, the full score for this item is 0 point.
8、开关站自切配置8. Switch station self-cutting configuration
开关站自切配置分析的主要步骤：选择配电线路，判断所述配电线路是否包含开关站；若所述配电线路包含开关站，则继续分析；若所述配电线路不包含开关站，则结束分析；判断所述配电线路中开关站是否配置自切开关，并记录信息。The main steps of switch station self-cutting configuration analysis: select a distribution line, and judge whether the distribution line contains a switch station; if the distribution line contains a switch station, continue the analysis; if the distribution line does not contain a switch station , then end the analysis; judge whether the switching station in the distribution line is equipped with a self-cutting switch, and record the information.
本实施例中，开关站自切配置的指标分数具体为：获取配电线路开关站数量A？开关站配置自切装置数量B？如果A为0，则该项得满分；如果A不为0，则该项得分为：开关站配置自切装置数量/配电线路开关站数量*100分，即：B/A*100分。In this embodiment, the index score for the self-cutting configuration of the switchyard is specifically: to obtain the number A of the switchyard of the distribution line? The switch station is equipped with the number B of self-cutting devices? If A is 0, this item will be given full marks; if A is not 0, then this item will be scored as: the number of self-cutting devices configured in the switching station/the number of switching stations for distribution lines*100 points, that is: B/A*100 points.
9、出线拼仓9. Qualified position consolidation
出线拼仓分析的主要步骤：选择配电线路，进行拓扑分析，从出线开关开始，如果存在站内连接线分支，并且每个分支均存在站外超连接线，则判定为出线拼仓并记录信息；若所述配电线路为出线拼仓，则判断配电线路架空线占比是否超过50％，若所述配电线路架空线占比超过50％，则判定为架空线拼仓，并记录信息；若所述配电线路架空线占比不超过50％，则判定为非架空线拼仓，并记录信息。The main steps of out-of-line consolidation analysis: select distribution lines, perform topology analysis, start from out-line switches, if there are branches of connecting lines inside the station, and each branch has super-connecting lines outside the station, it is determined to be out-of-line consolidation and record information ; If the distribution line is a joint warehouse of outgoing lines, it is judged whether the proportion of the overhead line of the distribution line exceeds 50%, and if the proportion of the overhead line of the distribution line exceeds 50%, it is determined that it is a joint warehouse of the overhead line, and records information; if the proportion of overhead lines in the distribution line does not exceed 50%, it will be determined as non-overhead line consolidation, and the information will be recorded.
本实施例中，出线拼仓的指标分数具体为：获取配电线路是否存在出线拼仓？出线拼仓是否为架空线拼仓？如果不存在出线拼仓，该项得分为100分；如果存在出线拼仓，出线拼仓不为架空线拼仓，该项得分为50分；如果存在出线拼仓，出线拼仓为架空线拼仓，该项得分为0分。In this embodiment, the index score for out-line binning is specifically: whether there is out-out line binning in the distribution line? Is the warehouse consolidation of outgoing lines a warehouse consolidation of overhead lines? If there is no qualifying consolidation, the score for this item is 100 points; if there is qualifying consolidation, and the qualifying consolidation is not overhead line consolidation, the score for this item is 50 points; if there is qualifying consolidation, the qualifying consolidation is overhead line consolidation warehouse, the score for this item is 0 points.
10、薄弱网架10. Weak grid
薄弱网架分析的主要步骤：选择配电线路，判断所述配电线路是否包含开关站； 若所述配电线路包含开关站，则继续分析；若所述配电线路不包含开关站，则结束分析；根据拓扑分析判断所述配电线路中开关站是否为单母线开关站；若所述配电线路中开关站是单母线开关站，则记录信息；若所述配电线路中开关站不是单母线开关站，则结束分析；判断所述配电线路中配变所属站房是否箱式变电站；若所述配电线路中配变所属站房是箱式变电站，则继续分析；若所述配电线路中配变所属站房不是箱式变电站，则结束分析；根据拓扑分析判断所述配变所属箱式变电站进线条数；若所述配变所属箱式变电站进线条数为一进一出成环网结构，则判定为正常，不记录；若所述配变所属箱式变电站进线条数只有一条进线，则判定为电缆网末端美式箱变放射型网架，为薄弱网架，并记录信息。The main steps of weak grid analysis: select the distribution line, and judge whether the distribution line contains a switch station; if the distribution line contains a switch station, continue the analysis; if the distribution line does not contain a switch station, then End the analysis; judge whether the switch station in the distribution line is a single-bus switch station according to the topology analysis; if the switch station in the distribution line is a single-bus switch station, record the information; if the switch station in the distribution line If it is not a single-bus switching station, then end the analysis; judge whether the station of the distribution transformer in the distribution line is a box-type substation; if the station of the distribution transformer in the distribution line is a box-type substation, continue the analysis; If the station to which the distribution transformer belongs is not a box-type substation in the distribution line, the analysis ends; the number of incoming lines of the box-type substation to which the distribution transformer belongs is judged according to the topology analysis; if the number of incoming lines of the box-type substation to which the distribution transformer belongs is one Once the ring network structure is formed, it is judged to be normal and not recorded; if the box-type substation to which the distribution transformer belongs has only one incoming line, it is judged to be an American-style box-type radial grid at the end of the cable network, which is a weak grid , and record the information.
本实施例中，薄弱网架的指标分数具体为：获取配电线路中开关站是否存在单母线开关站？配电线路下是否存在电缆网末端美式箱变放射型网架？如果不存在单母线开关站，并且不存在电缆网末端美式箱变放射型网架，该项得分为100分；如果存在单母线开关站，或者存在电缆网末端美式箱变放射型网架，该项得分为50分；如果存在单母线开关站，并且存在电缆网末端美式箱变放射型网架，该项得分为0分。In this embodiment, the index score of the weak network frame is specifically: whether there is a single-bus switching station in the switching station in the power distribution line? Is there an American-style box-type radial grid at the end of the cable network under the distribution line? If there is no single-bus switching station, and there is no American-style box-type radial grid at the end of the cable network, the score for this item is 100 points; The score for this item is 50 points; if there is a single-bus switching station and there is an American-style box-type radial grid at the end of the cable network, the score for this item is 0 points.
11、线路截面11. Line section
定义架空线主干线和架空线支线：选择配电线路，进行拓扑分析，由出线开关开始，遇到的第一条架空线为主干线，继续向下进行拓扑分析，遇到架空线分支，定义最长的一个分支为主干线，其他分支为支线，一直向下推拓扑，直到配电线路末端节点，即架空线主干线的判断标准：靠近出线开关，最长的一根线。Define the overhead line main line and overhead line branch line: select the distribution line, perform topology analysis, start from the outlet switch, the first overhead line encountered is the main line, continue to carry out topology analysis downwards, and when the overhead line branch is encountered, define The longest branch is the main line, and the other branches are branch lines. Push the topology down until the end node of the distribution line, that is, the main line of the overhead line. Judgment criteria: the longest line near the outlet switch.
定义变电站出口电缆：选择配电线路，进行拓扑分析，由出线开关开始，如果连接站外超连接线的线路为电缆，则定义为变电站出口电缆，该变电站出口电缆由站外超连接线开始，一直到第一个线路分支。定义为变电站出口电缆。Define the substation outlet cable: select the distribution line, perform topology analysis, start from the outlet switch, if the line connecting the superconnector outside the station is a cable, it is defined as the substation outlet cable, and the substation outlet cable starts from the superconnector outside the station, All the way to the first line branch. Defined as substation outlet cables.
定义跨越电缆：选择配电线路，进行拓扑分析，前一段线路为架空线，后一段线路为架空线，中间为电缆，则定义为跨越电缆。Definition of spanning cables: Select the distribution line and perform topology analysis. If the previous line is an overhead line, the latter line is an overhead line, and the middle line is a cable, then it is defined as a spanning cable.
定义开关站直供用户(10kV大用户)线路：选择配电线路，进行拓扑分析，从开关站供出，直接连接到10kV大用户的电缆线路，定义为开关站直供用户(10kV大用户)线路。Define the switch station direct supply user (10kV large user) line: select the distribution line, perform topology analysis, supply from the switch station, and directly connect to the cable line of the 10kV large user, which is defined as the switch station direct supply user (10kV large user) line .
定义开关站供出环网线路：选择配电线路，进行拓扑分析，从开关站供出，连接到环网站的电缆线路，定义为开关站供出环网线路。Define the switch station supply and exit ring network line: select the distribution line, perform topology analysis, supply from the switch station, and connect to the cable line of the ring network, and define it as the switch station supply and exit ring network line.
定义环网站10kV出线：选择配电线路，进行拓扑分析，从环网站供出的10kV电缆线路定义为环网站10kV出线。Define the 10kV outgoing line of the ring network: select the distribution line, perform topology analysis, and define the 10kV cable line supplied from the ring network as the 10kV outgoing line of the ring network.
线路截面分析的主要步骤：选择配电线路，判断所述配电线路下架空线主干线截面积和支线截面积是否满足标准；若所述配电线路下架空线主干线截面积和支线截面积不满足标准，则记录信息；所述配电线路下架空线主干线截面积和支线截面积满足标准，则结束分析；判断所述配电线路变电站出口电缆或跨越电缆是否满足标准；判断所述配电线路开关站直供用户(10kV大用户)线路是否满足标准；判断所述配电线路开关站供出环网线路是否满足标准；判断环网站10kV出线是否满足标准。The main steps of line section analysis: select the distribution line, and judge whether the cross-sectional area of the trunk line and branch line of the overhead line under the distribution line meet the standards; if the cross-sectional area of the trunk line and branch line of the overhead line under the distribution line If the standard is not met, then record the information; if the cross-sectional area of the main trunk line and the branch line cross-sectional area of the overhead line under the distribution line meet the standard, then end the analysis; judge whether the outlet cable or the crossing cable of the substation of the power distribution line meets the standard; judge the Whether the line directly supplied by the switch station of the distribution line to the user (10kV large user) meets the standard; judge whether the ring network line supplied by the switch station of the distribution line meets the standard; judge whether the 10kV outgoing line of the ring network meets the standard.
本实施例中，线路截面的指标分数具体为：获取配电线路中导线段数量A，不满足截面积要求导线段数量B。该项得分为(1-B/A)*100分。In this embodiment, the index score of the line section is specifically: obtaining the number A of wire segments in the distribution line, and the number B of wire segments that do not meet the cross-sectional area requirement. The score for this item is (1-B/A)*100 points.
12、负载率12. Load rate
负载率分析的主要步骤：选择配电线路，判断所述配电线路是否存在联络开关，若所述配电线路不包含联络开关，则记录信息，获取所述配电线路运行数据，进行负载率计算，记录计算结果以及所述配电线路不满足负载率“N-1”负荷转供，并结束分析；若所述配电线路包含联络开关，则继续分析；分析所述配电线路与联络开关相连的联络线路，并获取所有联络线路；获取所述配电线路及联络线路，基础模型及运行数据，基于数字孪生技术，构建数字孪生电网，通过在所述配电线路设置故障点，通过联络线路进行负荷转移，重新组成网架拓扑结构，并根据新组成的网架拓扑结构及运行数据，进行负载率计算；如果计算结果负载率有超过100％，则判定所述配电线路不满足负载率“N-1”负荷转供；如果计算结果负载率没有超过100％，则判定所述配电线路满足负载率“N-1”负荷转供。The main steps of load rate analysis: select a distribution line, determine whether there is a tie switch in the distribution line, if the distribution line does not include a tie switch, record the information, obtain the operating data of the distribution line, and calculate the load rate. Calculate, record the calculation results and the distribution line does not meet the load ratio "N-1" load transfer, and end the analysis; if the distribution line contains a tie switch, continue the analysis; analyze the distribution line and the tie switch Switch connected contact lines, and obtain all contact lines; obtain the distribution lines and contact lines, basic models and operating data, and build a digital twin power grid based on digital twin technology, by setting fault points on the distribution lines, through Connect the line for load transfer, re-form the grid topology, and calculate the load rate according to the newly formed grid topology and operating data; if the load rate of the calculation result exceeds 100%, it is determined that the distribution line does not meet the requirements. Load transfer with load rate "N-1"; if the calculated load rate does not exceed 100%, it is determined that the distribution line meets load transfer with load rate "N-1".
本实施例中，负载率的指标分数具体为：获取配电线路是否满足负载率“N-1”负荷转供。如果配电线路满足负载率“N-1”负荷转供，则该项得分为满分100分，如果配电线路不满足负载率“N-1”负荷转供，则该项得分为0分。In this embodiment, the index score of the load rate is specifically: obtaining whether the distribution line satisfies the load rate "N-1" load transfer. If the distribution line meets the load ratio "N-1" load transfer, the score for this item is 100 points, and if the distribution line does not meet the load ratio "N-1" load transfer, the score for this item is 0 points.
基于所述配电网可靠性指标分数的加权融合结果，确定待评价的配电网供电可靠性具体为：选择配电线路，基于所述配电线路配电网可靠性薄弱环节分析十二项分析结果按照百分制进行十二项指标分别进行打分，结合十二项指标打分结果，和十二项分析内容权重按照百分制对所述配电线路进行指标评价打分，确定待评价的配电网供电可靠性。Based on the weighted fusion results of the reliability index scores of the distribution network, determining the power supply reliability of the distribution network to be evaluated is specifically: selecting a distribution line, and analyzing twelve items based on the distribution network reliability weak link of the distribution line The analysis results are scored according to the 10-point system for the 12 indicators, combined with the score results of the 12 indicators and the weight of the 12 analysis content, the indicators are evaluated and scored according to the 10-point system to determine the reliable power supply of the distribution network to be evaluated sex.
上述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。If the above functions are realized in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .
实施例2Example 2
本实施例提供一种电子设备，包括一个或多个处理器、存储器和被存储在存储器中的一个或多个程序，所述一个或多个程序包括用于执行如实施例1所述基于数字孪生的配电网供电可靠性评价方法的指令。This embodiment provides an electronic device, including one or more processors, memory, and one or more programs stored in the memory, and the one or more programs include a digital-based Instructions for twin distribution network power supply reliability evaluation methods.
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术人员无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (10)

  1. 一种基于数字孪生的配电网供电可靠性评价方法，其特征在于，包括以下步骤：A method for evaluating reliability of distribution network power supply based on digital twins, characterized in that it includes the following steps:
    获取配电线路的基础数据和配电线路首末端运行数据；Obtain the basic data of the distribution line and the operation data of the beginning and end of the distribution line;
    基于数字孪生技术以及所述基础数据和运行数据，构建数字孪生电网，获取配电线路的配电网可靠性指标分数，所述配电网可靠性指标包括供电半径、架空线联络、架空线分段、熔丝支接容量、混合线路、电缆环网节点、合杆线路、开关站自切配置、出线拼仓、薄弱网架、线路截面和负载率；Based on the digital twin technology and the basic data and operation data, the digital twin power grid is constructed, and the distribution network reliability index score of the distribution line is obtained. The distribution network reliability index includes power supply radius, overhead line connection, overhead line distribution section, fuse branch connection capacity, hybrid line, cable ring network node, combined pole line, switch station self-cutting configuration, outgoing line binning, weak grid, line section and load rate;
    基于所述配电网可靠性指标分数的加权融合结果，确定待评价的配电网供电可靠性。Based on the weighted fusion results of the distribution network reliability index scores, the power supply reliability of the distribution network to be evaluated is determined.
  2. 根据权利要求1所述的基于数字孪生的配电网供电可靠性评价方法，其特征在于，所述基础数据包括设备网架拓扑数据和设备台账数据。The method for evaluating reliability of distribution network power supply based on digital twins according to claim 1, wherein the basic data includes equipment grid topology data and equipment ledger data.
  3. 根据权利要求2所述的基于数字孪生的配电网供电可靠性评价方法，其特征在于，所述设备包括出线开关、配电线段和/或配电变压器。The method for evaluating the reliability of distribution network power supply based on digital twins according to claim 2, wherein the equipment includes an outlet switch, a distribution line section and/or a distribution transformer.
  4. 根据权利要求1所述的基于数字孪生的配电网供电可靠性评价方法，其特征在于，所述运行数据包括出线开关计量点有功电量、无功电量、运行电压和功率因数。The digital twin-based distribution network power supply reliability evaluation method according to claim 1, wherein the operating data includes active power, reactive power, operating voltage and power factor at metering points of outlet switches.
  5. 根据权利要求1所述的基于数字孪生的配电网供电可靠性评价方法，其特征在于，所述供电半径的指标分数基于线路最大供电距离与标准供电半径的比较结果获取；The method for evaluating the reliability of distribution network power supply based on digital twins according to claim 1, wherein the index score of the power supply radius is obtained based on the comparison result of the maximum power supply distance of the line and the standard power supply radius;
    所述架空线联络的指标分数基于配电线路的架空线存在情况及线路联络情况获取；The index score of the overhead line connection is obtained based on the existence of the overhead line of the distribution line and the line connection situation;
    所述架空线分段的指标分数基于配电线路的架空线存在情况、分段存在情况及分段内节点数量获取；The index score of the overhead line segment is obtained based on the existence of the overhead line of the distribution line, the existence of the segment and the number of nodes in the segment;
    所述熔丝支接容量的指标分数基于配电线路节点变压器容量是否超过限制获取；The index score of the fuse branch capacity is obtained based on whether the capacity of the distribution line node transformer exceeds the limit;
    所述混合线路的指标分数基于配电线路的电缆段和架空线存在情况、架空线支接设备所属站房类型及配电线路出线开关连接的第一个非线路设备所属站房类型 获取；The index score of the hybrid line is obtained based on the cable section of the distribution line and the existence of the overhead line, the type of the station building to which the overhead line branch connection equipment belongs, and the type of the station building to which the first non-line equipment connected to the outlet switch of the distribution line belongs;
    所述电缆环网节点的指标分数基于配电线路的开关站存在情况、开关站供出线路存在的环网类型以及开关站供出线路连接节点数量获取；The index score of the cable ring network node is obtained based on the existence of the switch station of the distribution line, the ring network type of the switch station supply line and the number of connection nodes of the switch station supply line;
    所述合杆线路的指标分数基于配电线路的架空线存在情况及架空线电杆所属物理杆情况获取；The index score of the combined pole line is obtained based on the existence of the overhead line of the power distribution line and the physical pole to which the overhead line pole belongs;
    所述开关站自切配置的指标分数基于配电线路的开关站存在情况及开关站自切配置情况获取；The index score of the self-cutting configuration of the switchyard is obtained based on the existence of the switchyard of the distribution line and the configuration of the self-cutting configuration of the switchyard;
    所述出线拼仓的指标分数基于配电线路是否为出线拼仓及配电线路架空线占比获取；The index score of the out-line binning is obtained based on whether the distribution line is out-out line binning and the proportion of overhead lines in the distribution line;
    所述薄弱网架的指标分数基于配电线路的开关站存在情况、开关站类型及配电线路中配变所属站房类型获取；The index score of the weak network frame is obtained based on the existence of the switch station of the distribution line, the type of the switch station, and the type of the station to which the distribution transformer belongs in the distribution line;
    所述线路截面的指标分数基于配电线路下架空线主干线截面积和支线截面积以及配电线路变电站出口电缆或跨越电缆、配电线路开关站直供用户线路、配电线路开关站供出环网线路和环网站10kV出线的标准性获取；The index score of the line section is based on the cross-sectional area of the trunk line and branch line of the overhead line under the distribution line, the outlet cable or crossing cable of the distribution line substation, the direct supply line of the distribution line switch station, and the supply and exit ring of the distribution line switch station. Standardized acquisition of network lines and 10kV outgoing lines of ring sites;
    所述负载率的指标分数基于配电线路的负载率结果获取。The index score of the load rate is obtained based on the load rate result of the distribution line.
  6. 根据权利要求5所述的基于数字孪生的配电网供电可靠性评价方法，其特征在于，所述线路联络情况包括配电线路的联络关系及联络类型，所述联络类型包括站间联络、站内不同母线联络和无效联络。The method for evaluating reliability of distribution network power supply based on digital twins according to claim 5, characterized in that, the line connection situation includes the connection relationship and connection type of the distribution line, and the connection type includes inter-station connection, intra-station connection, etc. Dissimilar bus ties and invalid ties.
  7. 根据权利要求5所述的基于数字孪生的配电网供电可靠性评价方法，其特征在于，所述所属站房类型包括开关站、环网站或箱式变电站。The method for evaluating reliability of distribution network power supply based on digital twins according to claim 5, characterized in that, the type of the substation to which it belongs includes a switching station, a ring substation or a box-type substation.
  8. 根据权利要求5所述的基于数字孪生的配电网供电可靠性评价方法，其特征在于，所述架空线主干线的定义为：基于配电线路拓扑，从出线开关开始，遇到的第一条架空线为主干开始处，继续向下进行拓扑分析，遇到架空线分支，定义最长的一个分支为主干线，其他分支为支线，直到配电线路末端节点。The digital twin-based distribution network power supply reliability evaluation method according to claim 5, wherein the definition of the overhead line main line is: based on the distribution line topology, starting from the outlet switch, the first encountered The first overhead line is the beginning of the main line, and the topological analysis is continued downward. When the branch of the overhead line is encountered, the longest branch is defined as the main line, and the other branches are branch lines until the end node of the distribution line.
  9. 一种电子设备，其特征在于，包括：An electronic device, characterized in that it comprises:
    一个或多个处理器；one or more processors;
    存储器；和memory; and
    被存储在存储器中的一个或多个程序，所述一个或多个程序包括用于执行如权利要求1-8任一所述基于数字孪生的配电网供电可靠性评价方法的指令。One or more programs stored in the memory, the one or more programs including instructions for executing the digital twin-based distribution network power supply reliability evaluation method according to any one of claims 1-8.
  10. 一种计算机可读存储介质，其特征在于，包括供电子设备的一个或多个处 理器执行的一个或多个程序，所述一个或多个程序包括用于执行如权利要求1-8任一所述基于数字孪生的配电网供电可靠性评价方法的指令。A computer-readable storage medium, characterized in that it includes one or more programs for execution by one or more processors of an electronic device, and the one or more programs include a program for executing any one of claims 1-8. Instructions for the digital twin-based distribution network power supply reliability evaluation method.
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