CN115102169B - Power distribution network model quality verification method and system - Google Patents
Power distribution network model quality verification method and system Download PDFInfo
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- CN115102169B CN115102169B CN202211021288.1A CN202211021288A CN115102169B CN 115102169 B CN115102169 B CN 115102169B CN 202211021288 A CN202211021288 A CN 202211021288A CN 115102169 B CN115102169 B CN 115102169B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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]
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- 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
Abstract
The invention relates to a power distribution network model quality verification method and a system, comprising the following steps: acquiring various devices of the power distribution network, and generating a network topology model according to the connection relation of the various devices of the power distribution network; deep retrieval is carried out on the network topology model of the power distribution network, isolated equipment which is abnormally connected is determined, and loop measurement data are retrieved by combining the loop measurement data on the basis of the network topology model of the power distribution network; and feeding back the quality information after the verification of the network topology model of the power distribution network according to the isolated equipment and the loop measurement data. The method provides powerful model data support for the later state estimation and load flow calculation, and can effectively improve the accuracy and reliability of calculation.
Description
Technical Field
The invention relates to the technical field of power system analysis, in particular to a power distribution network model quality verification method and system.
Background
With the increasing year by year of the distributed power sources of the power distribution network, the large-scale construction makes the structure of the power distribution network become more and more complex, and further the regulation and control difficulty of the power distribution network is gradually increased. In order to realize accurate optimal scheduling of the power distribution network, an accurate state estimation and load flow calculation method is required to be used, so that the observability and scheduling capability of the power distribution network are improved. And the state estimation and the load flow calculation are based on the model, and the accuracy and the reliability of the calculation can be effectively improved by accurate modeling. Therefore, the quality verification method for the power distribution network model is provided, and the accuracy of model verification is improved.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problems of low regulation and control difficulty and low calibration accuracy of the power distribution network in the prior art, so that the power distribution network model quality calibration method and system capable of reducing the regulation and control difficulty and effectively improving the accuracy are provided.
In order to solve the technical problem, the quality verification method for the power distribution network model comprises the following steps of: step S1: acquiring various devices of the power distribution network, and generating a network topology model according to the connection relation of the various devices of the power distribution network; step S2: deep retrieval is carried out on the network topology model of the power distribution network, isolated equipment which is abnormally connected is determined, and loop measurement data are retrieved by combining the loop measurement data on the basis of the network topology model of the power distribution network; the method for determining the abnormally connected isolated equipment comprises the following steps: step S21: judging the number of feeder root nodes of the power distribution network, if the number is less than or equal to a first set value, considering that the feeder root nodes are empty, and outputting corresponding alarm information according to the alarm type; if the number of the feeder root nodes is larger than the first set value, traversing all the feeder root nodes, and continuously judging whether the feeder root nodes participate in the calculation, if so, judging that all the feeder root nodes do not participate in the calculation and are false; if not, all the feeder root nodes do not participate in the calculation to be true, and corresponding alarm information is output according to the alarm type; step S22: sequentially traversing the feeder root nodes of the power distribution network and then judging the number of the feeders of the power distribution network, wherein the method for sequentially traversing the feeder root nodes of the power distribution network comprises the following steps: judging the number of the connection point of the head end of the root node of the feeder line, if the number is a second set value, considering the root node of the feeder line as an isolated device, and outputting corresponding alarm information according to the alarm type; if the numbers of the head-end connecting points of the two root nodes are the same, determining that a repeated root node exists, and outputting corresponding alarm information according to the alarm type; if two root nodes are connected, the repeated root nodes are considered to exist, and corresponding alarm information is output according to the alarm type; step S23: sequentially traversing each device of the power distribution network topology model, and outputting corresponding alarm information according to the alarm type; and step S3: and feeding back the quality information after the verification of the network topology model of the power distribution network according to the isolated equipment and the loop measurement data.
In an embodiment of the present invention, the method for generating a network topology model according to the connection relationship among the devices of the power distribution network includes: sorting all nodes of each device of the power distribution network into different layers according to the distance from the feeder root node, and tearing a ring-closing point; after the ring closing point is torn, the branch and the bus are preferentially searched in width to form a feeder line; setting a feeder line where the split node is located as a non-radiation feeder line; and judging whether the equipment is charged or not, and coloring according to the charged state mark.
In an embodiment of the present invention, the method for determining the number of the feeder lines of the distribution network in step S22 is as follows: if the number of the feeder lines of the power distribution network is less than or equal to a first set value, the feeder lines are considered to be empty, and corresponding alarm information is output according to the alarm types; if the number of the feeders is larger than the first set value, traversing all the feeders, calculating and judging whether the feeders participate, and if so, calculating that all the feeders do not participate, and calculating to be false; if not, all feeders do not participate in the calculation and are true, and corresponding alarm information is output according to the alarm type.
In one embodiment of the invention, the devices of the power distribution network topology model comprise all distributed power generation devices, all capacitors, all loads, all switches, all knife switches, all feeder segments and all windings.
In an embodiment of the present invention, sequentially traversing the devices of the distribution network topology model includes sequentially traversing the live-line conditions of all distributed power generation devices, all capacitors, all loads, all switches, all disconnecting links, all feeder segments, and all windings in the distribution network topology model.
In an embodiment of the present invention, the method of sequentially traversing the electrification conditions of all the distributed generation devices, all the capacitors, all the loads, all the switches, all the disconnecting links, all the feeder segments and all the windings in the distribution network topology model is as follows: judging the charged condition of the equipment, entering next circulation if the equipment is charged, and taking the equipment as isolated equipment if the equipment is not charged; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, wherein the equipment is pure isolated equipment when the affiliated feeder line exists; and when the feeder line does not exist, the equipment is the feeder line-free isolated equipment, and corresponding alarm information is output according to the alarm type.
In an embodiment of the present invention, sequentially traversing the devices of the distribution network topology model further includes traversing the operating states of all distributed power generation devices, all capacitors, all loads, and all feeder segments in the distribution network topology model.
In one embodiment of the present invention, the method for traversing the operating states of all distributed generation devices, all capacitors, all loads, and all feeder segments in the topology model of the power distribution network is: and judging the running state of the equipment, if the equipment runs, entering the next cycle, if the equipment does not run, further judging whether the feeder line to which the equipment belongs is in the running state, if the feeder line is in the non-running state, entering the next cycle, otherwise, if the equipment is isolated equipment, and outputting corresponding alarm information according to the alarm type.
In an embodiment of the present invention, the method for retrieving the loop measurement data based on the topology model of the power distribution network in combination with the loop measurement data includes: traversing all feeder segments of the power distribution network, and writing information into a data structure; traversing all the measurement information of the power distribution network, and writing active values, reactive values and voltage values into the data structure; and traversing all switches of the power distribution network, reading active, reactive and voltage values from the data structure according to the feeder section information of the switch to make judgment, and if measurement is lost, outputting corresponding alarm information according to the alarm type.
The invention also discloses a system for verifying the quality of the power distribution network model, which comprises the following steps: the generating module is used for acquiring various devices of the power distribution network and generating a network topology model according to the connection relation of the various devices of the power distribution network; the retrieval module is used for carrying out deep retrieval on the network topology model of the power distribution network, determining isolated equipment with abnormal connection, and retrieving loop measurement data by combining the loop measurement data on the basis of the network topology model of the power distribution network; when the isolated equipment in abnormal connection is determined, the number of the feeder root nodes of the power distribution network is judged, if the number is less than or equal to a first set value, the feeder root nodes are considered to be empty, and corresponding alarm information is output according to the alarm type; if the number of the feeder root nodes is larger than the first set value, traversing all the feeder root nodes, and continuously judging whether the feeder root nodes participate in the calculation, if so, judging that all the feeder root nodes do not participate in the calculation and are false; if not, all the feeder root nodes do not participate in the calculation to be true, and corresponding alarm information is output according to the alarm type; sequentially traversing the feeder root nodes of the power distribution network and then judging the number of the feeders of the power distribution network, wherein the method for sequentially traversing the feeder root nodes of the power distribution network comprises the following steps: judging the number of the connection point of the head end of the root node of the feeder line, if the number is a second set value, considering the root node of the feeder line as an isolated device, and outputting corresponding alarm information according to the alarm type; if the numbers of the head-end connecting points of the two root nodes are the same, determining that a repeated root node exists, and outputting corresponding alarm information according to the alarm type; if two root nodes are connected, the repeated root nodes are considered to exist, and corresponding alarm information is output according to the alarm type; sequentially traversing each device of the power distribution network topology model, and outputting corresponding alarm information according to the alarm type; and the feedback module is used for feeding back the quality information of the power distribution network topology model after verification according to the isolated equipment and the loop measurement data.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the method and the system for verifying the quality of the power distribution network model, disclosed by the invention, a network topology model formed based on the connection relation of the power distribution network equipment is used for carrying out deep connection relation retrieval on the basis of network topology, so that the problem of model abnormality is found. According to the method, retrieval is carried out by combining a deep mining algorithm according to a network topology model of the power distribution network, the purpose of finding out topology abnormity is taken, the problem of the abnormal connection of the model is classified and counted and an alarm is given, a more intuitive alarm display is provided for a client, and the existing problem is conveniently processed; the perfect model structure can provide powerful model data support for the later state estimation and load flow calculation, and the accuracy and reliability of calculation can be effectively improved.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a flow chart of a power distribution network model quality verification method of the present invention;
fig. 2 is a specific flowchart of the quality verification method for the power distribution network model according to the present invention.
Detailed Description
Example one
As shown in fig. 1, this embodiment provides a method for verifying quality of a power distribution network model, which includes the following steps: step S1: acquiring various devices of the power distribution network, and generating a network topology model according to the connection relation of the various devices of the power distribution network; step S2: deep retrieval is carried out on the network topology model of the power distribution network, isolated equipment which is abnormally connected is determined, and loop measurement data are retrieved by combining the loop measurement data on the basis of the network topology model of the power distribution network; the method for determining the isolated device with abnormal connection comprises the following steps: step S21: judging the number of the feeder root nodes of the power distribution network, if the number is less than or equal to a first set value, considering the feeder root nodes to be empty, and outputting corresponding alarm information according to an alarm type; if the number of the feeder root nodes is larger than the first set value, traversing all the feeder root nodes, and continuously judging whether the feeder root nodes participate in the calculation, if so, judging that all the feeder root nodes do not participate in the calculation and are false; if not, all the feeder root nodes do not participate in the calculation to be true, and corresponding alarm information is output according to the alarm type; step S22: sequentially traversing the feeder root nodes of the power distribution network and then judging the number of the feeders of the power distribution network, wherein the method for sequentially traversing the feeder root nodes of the power distribution network comprises the following steps: judging the number of the connection point of the head end of the root node of the feeder line, if the number is a second set value, considering the root node of the feeder line as an isolated device, and outputting corresponding alarm information according to the alarm type; if the numbers of the head-end connecting points of the two root nodes are the same, determining that a repeated root node exists, and outputting corresponding alarm information according to the alarm type; if two root nodes are connected, the repeated root nodes are considered to exist, and corresponding alarm information is output according to the alarm type; step S23: sequentially traversing each device of the power distribution network topology model, and outputting corresponding alarm information according to the alarm type; and step S3: and feeding back the quality information after the verification of the network topology model of the power distribution network according to the isolated equipment and the loop measurement data.
In the method for verifying the quality of the power distribution network model in this embodiment, in step S1, various devices of the power distribution network are obtained, and a network topology model is generated according to the connection relationship among the various devices of the power distribution network, so that the quality of the network topology model is favorably ensured; in the step S2, deep retrieval is carried out on the network topology model of the power distribution network, isolated equipment which is abnormally connected is determined, and loop measurement data is retrieved by combining the loop measurement data on the basis of the network topology model of the power distribution network, so that topology abnormity can be found, the quality of the model is improved, and an accurate model is provided for high-level application; the method for determining the abnormally connected isolated equipment comprises the following steps: step S21: judging the number of the feeder root nodes of the power distribution network, if the number is less than or equal to a first set value, considering the feeder root nodes to be empty, and outputting corresponding alarm information according to an alarm type; if the number of the feeder root nodes is larger than the first set value, traversing all the feeder root nodes, and continuously judging whether the feeder root nodes participate in the calculation, if so, judging that all the feeder root nodes do not participate in the calculation and are false; if not, all the feeder root nodes do not participate in the calculation to be true, and corresponding alarm information is output according to the alarm type; step S22: sequentially traversing the feeder root nodes of the power distribution network and then judging the number of the feeders of the power distribution network, wherein the method for sequentially traversing the feeder root nodes of the power distribution network comprises the following steps: judging the number of the connection point of the head end of the root node of the feeder line, if the number is a second set value, considering the root node of the feeder line as an isolated device, and outputting corresponding alarm information according to the alarm type; if the numbers of the head-end connecting points of the two root nodes are the same, determining that a repeated root node exists, and outputting corresponding alarm information according to the alarm type; if two root nodes are connected, the repeated root nodes are considered to exist, and corresponding alarm information is output according to the alarm type; step S23: sequentially traversing each device of the power distribution network topology model, and outputting corresponding alarm information according to the alarm type; and step S3: according to the isolated equipment and the loop measurement data, the quality information after the power distribution network topology model is verified is fed back, so that the calculation accuracy is effectively improved, the model verification accuracy is improved, in addition, powerful model data support can be provided for the later state estimation and the load flow calculation, and the calculation accuracy and reliability are effectively improved.
In the step S1, each device of the power distribution network topology model includes all distributed power generation devices, all capacitors, all loads, all switches, all disconnecting links, all feeder segments, and all windings.
As shown in fig. 2, after various devices of the power distribution network are obtained, model devices are read, whether the device connection is abnormal or not is judged, and if the device connection is abnormal, alarm information is output; if not, reading the parameters of the model equipment, judging whether the equipment parameters are abnormal or not, and if so, outputting alarm information; and if not, generating a network topology model according to the connection relation of each device of the power distribution network.
When each item equipment of distribution network is obtained, the model information of each item equipment of distribution network is read, and the equipment type includes: the system comprises nodes, feeder root nodes, feeder sections, buses, loads, disconnecting links, switches, units, capacitors, windings and the like; the model information of the device includes: information such as equipment number, equipment name, connection point number, voltage level, charged state and the like gives alarm information to abnormal connection equipment; reading parameter information of various devices of the power distribution network, wherein the device types comprise: feeder sections, windings, loads, generators, capacitors, etc.; the device parameter types include: resistance, reactance, capacitance, etc.
When the parameter information of each device of the power distribution network is read, the parameters of the devices such as a feeder line section, a winding, a load, a generator, a capacitor and the like are read, the winding parameters are judged, and if the resistance or the reactance is less than 0.000001, an alarm for too small impedance is given; if the resistance or reactance is greater than 1, giving an alarm of overlarge impedance; judging feeder line section parameters, and giving an alarm of too small impedance if the resistance or reactance is less than 0.000001; if the resistance or the reactance is more than 0.1, giving an alarm of overlarge impedance; judging the load parameter, and giving alarm information if the capacity parameter is less than 0.000001; judging the generator parameters, and giving alarm information if the capacity parameter is less than 0.000001; and judging the capacitance parameter, and giving alarm information if the capacity of a certain phase of the capacitor is more than half of the rated capacity.
The method for generating the network topology model according to the connection relation of each device of the power distribution network comprises the following steps: sorting all nodes of each device of the power distribution network into different layers according to the distance from a feeder root node, and tearing a ring-closing point; after the ring closing point is torn, the branch and the bus are preferentially searched in width to form a feeder line; setting a feeder line where the split node is located as a non-radiation feeder line; and judging whether the equipment is electrified or not, and coloring according to the electrified state mark, thereby being beneficial to ensuring the quality of the network topology model.
In the step S21, the number of the feeder root nodes of the distribution network is determined, and if the number is less than or equal to 1, the feeder root nodes are considered to be empty, and corresponding alarm information is output according to an alarm type; if the number of the feeder root nodes is larger than 1, traversing all the feeder root nodes, continuously judging whether the feeder root nodes participate in the calculation, defaulting that all the feeder root nodes do not participate in the calculation to be true, and if the feeder root nodes do not participate in the calculation to be false; if not, all feeder root nodes do not participate in the calculation to be true, alarm information is set to be SOAllDeleted, and corresponding alarm information is output according to the alarm type.
In step S22, the specific method for sequentially traversing the feeder root nodes of the power distribution network includes: judging the number of a connection point at the head end of a root node of the feeder line, if the number is 0, considering the root node of the feeder line as an isolated device, setting SOIsolated for the alarm information, and outputting the corresponding alarm information according to the alarm type at the later stage; if the number of the head end connecting points of the two root nodes is the same, the root node is considered to be a repeated root node, the alarm information is set as SOReleased, and the corresponding alarm information is output according to the alarm type at the later stage; if two root nodes are connected, the existence of the repeated root nodes is considered, SOrepealed is set for the alarm information, and corresponding alarm information is output according to the alarm type at the later stage.
In step S22, the method for determining the number of the feeder lines of the power distribution network includes: if the number of the feeder lines of the power distribution network is less than or equal to a first set value, the feeder lines are considered to be empty, and corresponding alarm information is output according to the alarm types; if the number of the feeders is larger than the first set value, traversing all the feeders, calculating and judging whether the feeders participate, and if so, calculating that all the feeders do not participate, and calculating to be false; if not, all feeders do not participate in the calculation and are true, and corresponding alarm information is output according to the alarm type. Specifically, if the number of the feeder lines is less than or equal to 1, the feeder lines are considered to be empty, the alarm information is set to DVempty, and corresponding alarm information is output at the later stage according to the alarm type; if the number of the feeders is larger than 1, traversing all the feeders, judging whether the feeders participate in calculation, defaulting that all the feeders do not participate in calculation to be true, and if the feeders participate in calculation, judging that all the feeders do not participate in calculation to be false; if no feeder line participates in the calculation, all the feeder lines do not participate in the calculation, the alarm information is set to be DVAllDeleted, and corresponding alarm information is output at the later stage according to the alarm type.
In step S23, sequentially traversing all the devices of the power distribution network topology model includes sequentially traversing the electrification conditions of all the distributed power generation devices, all the capacitors, all the loads, all the switches, all the disconnecting links, all the feeder segments, and all the windings in the traversed power distribution network topology model.
And sequentially traversing the electrification conditions of all distributed generation equipment, all capacitors, all loads, all switches, all disconnecting links, all feeder sections and all windings in the power distribution network topology model: judging the charged condition of the equipment, entering next circulation if the equipment is charged, and taking the equipment as isolated equipment if the equipment is not charged; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, wherein the equipment is pure isolated equipment when the affiliated feeder line exists; and when the feeder line does not exist, the equipment is the feeder line-free isolated equipment, and corresponding alarm information is output according to the alarm type.
When traversing all the distributed power generation equipment in the distribution network topology model, judging the electrified condition of the equipment, entering the next cycle if the equipment is electrified, and setting the alarm information of the equipment as isolated equipment as IsolateDevice if the equipment is not electrified; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, and setting the alarm information of the equipment which is pure isolated equipment when the affiliated feeder line exists as Isolateterminal; and when the feeder line does not exist, the alarm information of the device which is an isolated device without the feeder line is NoBelongFeeder, and the corresponding alarm information is output according to the alarm type at the later stage.
When all capacitors in the distribution network topology model are traversed, judging the electrified condition of the equipment, entering next circulation if the equipment is electrified, and setting the alarm information of the equipment as isolated equipment as isolateddevice if the equipment is not electrified; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, and setting the alarm information of the equipment which is pure isolated equipment when the affiliated feeder line exists as Isolateterminal; and when the feeder line does not exist, the alarm information of the device which is an isolated device without the feeder line is NoBelongFeeder, and the corresponding alarm information is output according to the alarm type at the later stage.
When all loads in the distribution network topology model are traversed, judging the electrified condition of the equipment, entering next circulation if the equipment is electrified, and setting the alarm information of the equipment as isolated equipment as isolatedequipment if the equipment is not electrified; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, and setting the alarm information of the equipment which is pure isolated equipment when the affiliated feeder line exists as Isolateterminal; and when the feeder line does not exist, the alarm information of the device which is an isolated device without the feeder line is NoBelongFeeder, and the corresponding alarm information is output according to the alarm type at the later stage.
When all switches in the distribution network topology model are traversed, judging the electrified condition of the equipment, entering next circulation if the equipment is electrified, and setting the alarm information of the equipment as isolated equipment as IsolateDevice if the equipment is not electrified; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, and setting the alarm information of the equipment which is pure isolated equipment when the affiliated feeder line exists as Isolateterminal; and when the feeder line does not exist, the alarm information of the device which is an isolated device without the feeder line is NoBelongFeeder, and the corresponding alarm information is output according to the alarm type at the later stage.
When all disconnecting links in the distribution network topology model are traversed, judging the electrified condition of the equipment, entering next circulation if the equipment is electrified, and setting the alarm information of the equipment as isolated equipment as IsolateDevice if the equipment is not electrified; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, and setting the alarm information of the equipment which is pure isolated equipment when the affiliated feeder line exists as Isolateterminal; and when the feeder line does not exist, the alarm information of the device which is an isolated device without the feeder line is NoBelongFeeder, and the corresponding alarm information is output according to the alarm type at the later stage.
When all feeder segments in the distribution network topology model are traversed, judging the electrified condition of the equipment, entering next circulation if the equipment is electrified, and setting the alarm information of the equipment as isolated equipment as IsolateDevice if the equipment is not electrified; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, and setting the alarm information of the equipment which is pure isolated equipment when the affiliated feeder line exists as Isolateterminal; and when the feeder line does not exist, the warning information of the device which is an isolated device without the feeder line is NoBellingFeeder, and corresponding warning information is output according to the warning type in the later period.
When all windings in the distribution network topology model are traversed, judging the electrified condition of the equipment, entering next circulation if the equipment is electrified, and setting the alarm information of the equipment as isolated equipment as IsolateDevice if the equipment is not electrified; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, and setting the alarm information of the equipment which is pure isolated equipment when the affiliated feeder line exists as Isolateterminal; and when the feeder line does not exist, the alarm information of the device which is an isolated device without the feeder line is NoBelongFeeder, and the corresponding alarm information is output according to the alarm type at the later stage.
And sequentially traversing all the devices of the power distribution network topology model further comprises traversing the running states of all the distributed power generation devices, all the capacitors, all the loads and all the feeder segments in the power distribution network topology model.
The method for traversing the running states of all distributed generation equipment, all capacitors, all loads and all feeder segments in the power distribution network topology model is as follows: and judging the running state of the equipment, if the equipment runs, entering the next cycle, if the equipment does not run, further judging whether the feeder line to which the equipment belongs is in the running state, if the feeder line is in the non-running state, entering the next cycle, otherwise, if the equipment is isolated equipment, and outputting corresponding alarm information according to the alarm type.
Specifically, when traversing all distributed power generation equipment in the distribution network topology model, judging the running state of the equipment, if running, entering the next cycle, if not, further judging whether a feeder line to which the equipment belongs is in the running state, if the feeder line is in the non-running state, entering the next cycle, otherwise, the equipment is isolated equipment, the alarm information is IsolateDevice, and outputting the corresponding alarm information in the later period according to the alarm type.
And when traversing all capacitors in the distribution network topology model, judging the running state of the equipment, if running, entering next circulation, if not running, further judging whether the feeder line of the equipment is in the running state, if the feeder line is in the non-running state, entering next circulation, otherwise, the equipment is isolated equipment, setting the alarm information as IsolateDevice, and outputting corresponding alarm information according to the alarm type in the later period.
And when traversing all loads in the distribution network topology model, judging the running state of the equipment, if running, entering next circulation, if not, further judging whether a feeder line to which the equipment belongs is in the running state, if the feeder line is in the non-running state, entering next circulation, otherwise, the equipment is isolated equipment, setting the alarm information as IsolateDevice, and outputting the corresponding alarm information according to the alarm type in the later period.
And when traversing all feeder segments in the distribution network topology model, judging the running state of the equipment, if running, entering the next cycle, if not, further judging whether the feeder to which the equipment belongs is in the running state, if the feeder is in the non-running state, entering the next cycle, otherwise, the equipment is isolated equipment, setting the alarm information as IsolateDevice, and outputting the corresponding alarm information according to the alarm type at the later stage.
The method for retrieving the loop measurement data by combining the loop measurement data based on the power distribution network topology model comprises the following steps: traversing all feeder segments of the power distribution network, and writing information into a data structure; traversing all the measurement information of the power distribution network, and writing active values, reactive values and voltage values into the data structure; and traversing all switches of the power distribution network, reading active, reactive and voltage values from the data structure according to the feeder section information of the switch to make judgment, and if measurement is lost, outputting corresponding alarm information according to the alarm type.
In step S3, the quality information after the verification of the feedback distribution network topology model includes: parameter information of each equipment of the power distribution network, alarm information after the isolated equipment which is abnormally connected is determined and alarm information after the missing condition of the measurement is retrieved, a client can read an alarm information data table, the current model checking condition can be known more conveniently and visually, targeted processing is carried out on found problems, the working efficiency can be effectively improved, and the model quality can be rapidly improved.
Example two
Based on the same inventive concept, the embodiment provides a power distribution network model quality verification system, the principle of solving the problems is similar to the power distribution network model quality verification method, and repeated parts are not described again.
The embodiment provides a distribution network model quality verification system, including:
the generating module is used for acquiring various devices of the power distribution network and generating a network topology model according to the connection relation of the various devices of the power distribution network;
the retrieval module is used for carrying out deep retrieval on the network topology model of the power distribution network, determining isolated equipment with abnormal connection, and retrieving loop measurement data by combining the loop measurement data on the basis of the network topology model of the power distribution network; when the isolated equipment which is abnormally connected is determined, the number of the feeder root nodes of the power distribution network is judged, if the number of the feeder root nodes is less than or equal to a first set value, the feeder root nodes are considered to be empty, and corresponding alarm information is output according to the alarm type; if the number of the feeder root nodes is larger than the first set value, traversing all the feeder root nodes, and continuously judging whether the feeder root nodes participate in the calculation, if so, judging that all the feeder root nodes do not participate in the calculation and are false; if not, all the feeder root nodes do not participate in the calculation to be true, and corresponding alarm information is output according to the alarm type; sequentially traversing the feeder root nodes of the power distribution network and then judging the number of the feeders of the power distribution network, wherein the method for sequentially traversing the feeder root nodes of the power distribution network comprises the following steps: judging the number of the connection point of the head end of the root node of the feeder line, if the number is a second set value, considering the root node of the feeder line as an isolated device, and outputting corresponding alarm information according to the alarm type; if the numbers of the head-end connecting points of the two root nodes are the same, determining that a repeated root node exists, and outputting corresponding alarm information according to the alarm type; if two root nodes are connected, the repeated root nodes are considered to exist, and corresponding alarm information is output according to the alarm type; sequentially traversing each device of the power distribution network topology model, and outputting corresponding alarm information according to the alarm type;
and the feedback module is used for feeding back the quality information of the power distribution network topology model after verification according to the isolated equipment and the loop measurement data.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Various other modifications and alterations will occur to those skilled in the art upon reading the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (9)
1. A power distribution network model quality verification method is characterized by comprising the following steps:
step S1: acquiring various devices of the power distribution network, and generating a network topology model according to the connection relation of the various devices of the power distribution network;
step S2: the method comprises the following steps of carrying out deep retrieval on a power distribution network topology model, determining isolated equipment with abnormal connection, retrieving loop measurement data by combining loop measurement data on the basis of the power distribution network topology model, wherein the method for retrieving the loop measurement data by combining the loop measurement data on the basis of the power distribution network topology model comprises the following steps: traversing all feeder segments of the power distribution network, and writing information into a data structure; traversing all the measurement information of the power distribution network, and writing active values, reactive values and voltage values into the data structure; traversing all switches of the power distribution network, reading active, reactive and voltage values from the data structure according to feeder line section information to which the switches belong to make judgment, and if measurement is lost, outputting corresponding alarm information according to alarm types;
the method for determining the abnormally connected isolated equipment comprises the following steps:
step S21: judging the number of the feeder root nodes of the power distribution network, if the number is less than or equal to a first set value, considering the feeder root nodes to be empty, and outputting corresponding alarm information according to an alarm type; if the number of the feeder root nodes is larger than the first set value, traversing all the feeder root nodes, and continuously judging whether the feeder root nodes participate in the calculation, if so, judging that all the feeder root nodes do not participate in the calculation and are false; if not, all the feeder root nodes do not participate in the calculation to be true, and corresponding alarm information is output according to the alarm type;
step S22: sequentially traversing the feeder root nodes of the power distribution network and then judging the number of the feeders of the power distribution network, wherein the method for sequentially traversing the feeder root nodes of the power distribution network comprises the following steps: judging the number of the connection point of the head end of the root node of the feeder line, if the number is a second set value, considering the root node of the feeder line as an isolated device, and outputting corresponding alarm information according to the alarm type; if the head end connection point numbers of the two root nodes are the same, the root node is considered to be a repeated root node, and corresponding alarm information is output according to the alarm type; if two root nodes are connected, the repeated root nodes are considered to exist, and corresponding alarm information is output according to the alarm type;
step S23: sequentially traversing each device of the power distribution network topology model, and outputting corresponding alarm information according to the alarm type;
and step S3: and feeding back the quality information after the verification of the network topology model of the power distribution network according to the isolated equipment and the loop measurement data.
2. The power distribution network model quality verification method according to claim 1, characterized in that: the method for generating the network topology model according to the connection relation of each device of the power distribution network comprises the following steps: sorting all nodes of each device of the power distribution network into different layers according to the distance from a feeder root node, and tearing a ring-closing point; after the ring closing point is torn, the branch and the bus are preferentially searched in width to form a feeder line; setting a feeder line where the split node is located as a non-radiation feeder line; and judging whether the equipment is charged or not, and coloring according to the charged state mark.
3. The power distribution network model quality verification method according to claim 1, characterized in that: the method for judging the number of the feeder lines of the power distribution network in the step S22 comprises the following steps: if the number of the feeder lines of the power distribution network is less than or equal to a first set value, the feeder lines are considered to be empty, and corresponding alarm information is output according to the alarm types; if the number of the feeders is larger than the first set value, traversing all the feeders, calculating and judging whether the feeders participate, and if so, calculating that all the feeders do not participate to be false; if not, all feeders do not participate in the calculation and are true, and corresponding alarm information is output according to the alarm type.
4. The power distribution network model quality verification method according to claim 1, characterized in that: all the equipment of the distribution network topology model comprises all the distributed power generation equipment, all the capacitors, all the loads, all the switches, all the disconnecting links, all the feeder sections and all the windings.
5. The power distribution network model quality verification method according to claim 4, wherein: and sequentially traversing all the devices of the power distribution network topology model comprises sequentially traversing all the distributed power generation devices, all the capacitors, all the loads, all the switches, all the disconnecting links, all the feeder segments and all the winding electrification conditions in the power distribution network topology model.
6. The power distribution network model quality verification method according to claim 5, wherein: and sequentially traversing the electrification conditions of all distributed generation equipment, all capacitors, all loads, all switches, all disconnecting links, all feeder sections and all windings in the distribution network topology model: judging the charged condition of the equipment, entering next circulation if the equipment is charged, and taking the equipment as isolated equipment if the equipment is not charged; further judging whether the equipment has an affiliated feeder line under the condition of no electricity, wherein the equipment is pure isolated equipment when the affiliated feeder line exists; and when the feeder line does not exist, the equipment is the feeder line-free isolated equipment, and corresponding alarm information is output according to the alarm type.
7. The power distribution network model quality verification method according to claim 4, wherein: and sequentially traversing all the devices of the distribution network topology model further comprises traversing the running states of all the distributed power generation devices, all the capacitors, all the loads and all the feeder sections in the distribution network topology model.
8. The power distribution network model quality verification method according to claim 7, wherein: the method for traversing the running states of all distributed generation equipment, all capacitors, all loads and all feeder segments in the power distribution network topology model is as follows: and judging the running state of the equipment, if the equipment runs, entering the next cycle, if the equipment does not run, further judging whether the feeder line to which the equipment belongs is in the running state, if the feeder line is in the non-running state, entering the next cycle, otherwise, if the equipment is isolated equipment, and outputting corresponding alarm information according to the alarm type.
9. The utility model provides a distribution network model quality check system which characterized in that includes:
the generating module is used for acquiring various devices of the power distribution network and generating a network topology model according to the connection relation of the various devices of the power distribution network;
the retrieval module is used for carrying out deep retrieval on the power distribution network topology model, determining isolated equipment in abnormal connection, retrieving loop measurement data by combining loop measurement data on the basis of the power distribution network topology model, traversing all feeder segments of the power distribution network when retrieving the loop measurement data by combining the loop measurement data on the basis of the power distribution network topology model, and writing information into a data structure; traversing all the measurement information of the power distribution network, and writing active values, reactive values and voltage values into the data structure; traversing all switches of the power distribution network, reading active, reactive and voltage values from the data structure according to feeder line section information to which the switches belong to make judgment, and if measurement is lost, outputting corresponding alarm information according to alarm types; when the isolated equipment which is abnormally connected is determined, the number of the feeder root nodes of the power distribution network is judged, if the number of the feeder root nodes is less than or equal to a first set value, the feeder root nodes are considered to be empty, and corresponding alarm information is output according to the alarm type; if the number of the feeder root nodes is larger than the first set value, traversing all the feeder root nodes, and continuously judging whether the feeder root nodes participate in the calculation, if so, judging that all the feeder root nodes do not participate in the calculation and are false; if not, all the feeder root nodes do not participate in the calculation to be true, and corresponding alarm information is output according to the alarm type; sequentially traversing the feeder root nodes of the power distribution network and then judging the number of the feeders of the power distribution network, wherein the method for sequentially traversing the feeder root nodes of the power distribution network comprises the following steps: judging the number of the connection point of the head end of the root node of the feeder line, if the number is a second set value, considering the root node of the feeder line as an isolated device, and outputting corresponding alarm information according to the alarm type; if the head end connection point numbers of the two root nodes are the same, the root node is considered to be a repeated root node, and corresponding alarm information is output according to the alarm type; if two root nodes are connected, the repeated root nodes are considered to exist, and corresponding alarm information is output according to the alarm type; sequentially traversing each device of the power distribution network topology model, and outputting corresponding alarm information according to the alarm type;
and the feedback module is used for feeding back the quality information of the power distribution network topology model after verification according to the isolated equipment and the loop measurement data.
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