CN102611103B - Method for automatically transforming outside-the-station electric topology to tidal topology of power distribution network - Google Patents
Method for automatically transforming outside-the-station electric topology to tidal topology of power distribution network Download PDFInfo
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Abstract
A method for automatically transforming outside-the-station electric topology to tidal topology of a power distribution network includes steps: (1) acquiring and preparing foundation data: acquiring outside-the-station electric topology data which include a node set N and a line set L N from an Scada (supervisory control and data acquisition) system of the power distribution network, creating a tidal topology node set PFE and a line set PFL in an internal memory and leading the two sets to be null at the moment; (2) directly switching nodes; (3) automatically merging lines: traversing the set PFN, adding nodes with the types of switches and knife switches in the PFN into a new set B, traversing every node in the set B, extracting a tail-end node to be marked as Bi, and acquiring two nodes BFNj and PFNk which are connected with the Bi; and (4), completing switching and outputting the set PFN and the set PFL. By the aid of the method, update time is shortened, and work efficiency is improved.
Description
Technical field
The present invention relates to distribution website outdoor electrical topology to trend topology automatic switching method.
Background technology
Intelligent power distribution automation is taking rack and equipment as basis, taking electrical power distribution automatization system as core, integrated application power electronic technology, the communication technology, computer and network technology, realize monitoring and the control of distribution system, and integrated by the information of related system, realize the scientific management of power distribution automation.Distribution main website is the core of electrical power distribution automatization system, mainly realizes the expanded function such as the basic function such as electric distribution network data collection and monitoring and electrical network analysis application, realizes the communication network of communication.IEC61968 standard carrying out and implementing in power distribution automation product, has promoted the integrated application of power distribution automation, for the information interaction between various application has been created condition.
Aspect the lexical analysis of power distribution network, dispatcher need to analyze and prediction the ruuning situation of power distribution network, and the basis of analyzing is electric network swim computing function.And existing trend computational algorithm is mainly for a complete grid structure, i.e. the electric network composition of full-mesh.Then, distribution website outdoor electrical topology is due to the generation of various small-sized accidents, the carrying out of all kinds of service works, so structure often changes, then cause dispatcher must often pay close attention to electric change in topology, and time update trend topology complete analysis and evaluation work.
Along with the development of technology, existing power distribution network SCADA (data acquisition and supervisor control) can classify the information of all electric components of the automation feeder line outside distribution website and storage, and has safeguarded electric topological structure in its electric network data storehouse.
Therefore, how a full automatic method can be provided, the immediate status of the distribution website outdoor electrical topology that can automatically provide according to SCADA system generates trend topology automatically, thereby simplify dispatcher's operating pressure, improve analysis and calculation operating efficiency, the lock in time that reduces theoretical trend topology and actual electric network difference, just become very important research topic.
Summary of the invention
Upgrade the problem of the time difference in order to overcome outside existing distribution website instant electric topology and trend topology in tidal current analysis, the present invention is intended to propose a kind of full automatic distribution website outdoor electrical topology immediate status and automatically generates the method for trend topology, the method can be converted to trend topological structure by electric topological structure automatically, and simplify number of, lines, merge track data according to electric component type (switch and plug-in strip), make dispatcher obtain in real time up-to-date trend topology, thereby dwindle update time, increase work efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
Distribution website outdoor electrical topology is to trend topology automatic switching method, and described method mainly comprises the following steps:
(1) basic data is obtained and is prepared
(1.1) from distribution Scada system acquisition station outdoor electrical topology (based on XML form or binary format), comprise node set N and line set L.
(1.2) in internal memory, create trend topological node set PFN and line set PFL, now two set are sky.
(2) node is directly changed
(2.1) judge whether whether set L is empty, exist line information in distribution station outdoor electrical topology.If there is no, EOC.
(2.2) the extraction tail end line from set L is expressed as Lk, and obtains two end nodes that Lk connects, and note is Ni and Nj.
(2.3) check in set PFN whether comprise Ni and Nj.If do not exist Ni and Nj be added to respectively to PFN set.Set respectively Ni and Nj additional data, additional data comprises: the line number of node, the type of node.
(2.4) circuit Lk is added into PFL, from set L, deletes circuit Lk.
(3) circuit merges automatically
(3.1) traversal set PFN, the node that is switch and plug-in strip by all types in PFN joins in new set B.
(3.2) the each node of traversal in set B, extracts endpoint node note and is Bi, and obtains two the node PFNj and the PFNk that are connected with Bi.
(3.3) type of inspection node PFNj and PFNk, if be all switch or plug-in strip, merges the circuit PFLm and the circuit PFLn that is connected PFNk, Bi that connect PFNj, Bi, and to set, PFL adds new line PFLx.And according to the data of the setting parameter new line PFLx of circuit PFLm and circuit PFLn, merging rule is: underlying parameter is all continued to use the underlying parameter of circuit PFLm, line length is PFLm and PFLn line length sum, resistance is PFLm and PFLn resistance value sum, and reactance is PFLm and PFLn reactance value sum.From PFL, delete two old circuit PFLm and PFLn.
(4) change complete, output set PFN and set PFL.
Operation principle of the present invention is: upgrade the problem of the time difference in order to overcome outside existing distribution website instant electric topology and trend topology in tidal current analysis, the present invention is intended to propose a kind of full automatic distribution website outdoor electrical topology immediate status and automatically generates the method for trend topology, the method can be converted to trend topological structure by electric topological structure automatically, and simplify number of, lines, merge track data according to component type (switch and plug-in strip), make dispatcher obtain in real time up-to-date trend topology, thereby dwindle update time, increase work efficiency.
Beneficial effect of the present invention is mainly manifested in: 1, outside distribution website, trend topology generates automatically; 2, simplify circuit according to component type; 3, support various stations outdoor electrical topological structure.
(4) brief description of the drawings
Fig. 1 is the flow chart of distribution website outdoor electrical topology to trend topology automatic switching method.
Fig. 2 is the structure chart of distribution website outdoor electrical topology to trend topology automated conversion system.
(5) embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1, distribution website outdoor electrical topology, to trend topology automatic switching method, comprises the following steps:
The first step: from distribution Scada system acquisition station outdoor electrical topology, comprise node set N and line set L.
Second step: create trend topological node set PFN and line set PFL.
The 3rd step: check that L is empty? sky jumps to the 8th step if.
The 4th step: extract the tail end line Lk in L.
The 5th step: two end node Ni and the Nj that obtain Lk.
The 6th step: check in PFN whether comprise Ni and Nj.Be added to PFN set if do not exist, and set additional data.Additional data comprises: the line number of node, the type of node.
The 7th step: add circuit Lk to gathering PFL.
The 8th step: extracting switch/plug-in strip node in PFN is set B.
The 9th step: check whether set B is empty, empty if, jump to the 14 step.
The tenth step: the endpoint node Bi that extracts set B.
The 11 step: obtain two the node PFNj and the PFNk that are connected with Bi.
The 12 step: check whether PFNj and PFNk are all switch or plug-in strip node, if not jumping to the 9th step.
The 13 step: merge the circuit PFLm and the circuit PFLn that is connected PFNk, Bi that connect PFNj, Bi, add new line PFLx, merge supplemental characteristic, jump to the 9th step.
The 14 step: change complete, output set PFN and set PFL.
With reference to Fig. 2, the distribution website outdoor electrical topology that application this method realizes, to trend topology automated conversion system, mainly comprises existing system interface and optimizes subsystem.
Described existing system interface comprises:
(1) trend topology interface module: this module can be led the SCADA system that is back to by automatic generated instant trend topological structure.
(2) SCADA power network topology interface module: this module is used for and existing power distribution network SCADA system docking, obtains complete station outdoor electrical topological structure.
Described optimization subsystem comprises:
(1) the outdoor electrical Topology Management module of standing: electric component and electric wiring are managed, comprise increase, deletion, amendment, merging and importing/export function.
(2) trend topological node and line management module: the structure of management trend topology, comprises trend topological relation, trend node and trend track data structure.
(3) set conversion and merging module: for the isomerism of data structure between electric topology and two kinds of aggregate types of trend topology set, complete the function of data interchange.
(4) the automatic administration module of internal storage data: the data structure that all modules are set up in internal memory is carried out unified management, prevents the situations such as RAM leakage, improves reliability.
Claims (2)
1. outdoor electrical topology in distribution website, to a trend topology automatic switching method, is characterized in that: described method comprises the following steps:
(1) basic data is obtained and is prepared, and detailed process is as follows:
(1.1), from distribution Scada system acquisition station outdoor electrical topological data, described station outdoor electrical topological data comprises node set N and line set L;
(1.2) in internal memory, create trend topological node set PFN and line set PFL, now two set are sky;
(2) node is directly changed, and detailed process is as follows:
(2.1) judge whether whether set L is empty, exist line information in distribution station outdoor electrical topology; If there is no, EOC;
(2.2) the extraction tail end line from set L is expressed as Lk, and obtains two end nodes that Lk connects, and note is Ni and Nj;
(2.3) check in set PFN whether comprise Ni and Nj; If do not exist Ni and Nj be added to respectively to PFN set; Set respectively Ni and Nj additional data, additional data comprises: the line number of node, the type of node;
(2.4) circuit Lk is added into PFL, from set L, deletes circuit Lk;
(3) circuit merges automatically, and detailed process is as follows:
(3.1) traversal set PFN, the node that is switch and plug-in strip by all types in PFN joins in new set B;
(3.2) the each node of traversal in set B, extracts endpoint node note and is Bi, and obtains two the node PFNj and the PFNk that are connected with Bi;
(3.3) type of inspection node PFNj and PFNk, if be all switch or plug-in strip, merges the circuit PFLm and the circuit PFLn that is connected PFNk, Bi that connect PFNj, Bi, and to set, PFL adds new line PFLx; And according to the data of the setting parameter new line PFLx of circuit PFLm and circuit PFLn, merging rule is: underlying parameter is all continued to use the underlying parameter of circuit PFLm, line length is PFLm and PFLn line length sum, resistance is PFLm and PFLn resistance value sum, and reactance is PFLm and PFLn reactance value sum; From PFL, delete two old circuit PFLm and PFLn;
(4) change complete, output set PFN and set PFL.
2. a kind of distribution as claimed in claim 1 website outdoor electrical topology, to trend topology automatic switching method, is characterized in that: in described step (1.1), described station outdoor electrical topological data adopts XML form or binary format.
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| CN103280894B (en) * | 2013-06-14 | 2015-03-25 | 山东理工大学 | Power distribution network control application network topology automatic identifying method |
| CN103810395B (en) * | 2014-03-03 | 2017-08-11 | 国网浙江象山县供电公司 | Computational methods, device and the arranging system of electric network current diagram plant stand node coordinate |
| CN104463438B (en) * | 2014-11-21 | 2019-01-04 | 贵州电网公司电力调度控制中心 | Electric power system tide figure Computer Aided Analysis System |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101632211A (en) * | 2007-02-05 | 2010-01-20 | Abb研究有限公司 | Power-line sag calculation by way of power-system state estimation |
| EP2398128A2 (en) * | 2010-06-21 | 2011-12-21 | General Electric Company | System and method for control of power distribution networks |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101632211A (en) * | 2007-02-05 | 2010-01-20 | Abb研究有限公司 | Power-line sag calculation by way of power-system state estimation |
| EP2398128A2 (en) * | 2010-06-21 | 2011-12-21 | General Electric Company | System and method for control of power distribution networks |
Non-Patent Citations (2)
| Title |
|---|
| 分布式电源混合并网的配电网潮流算法研究;李丹等;《华东电力》;20110131;第39卷(第1期);第76-80页 * |
| 李丹等.分布式电源混合并网的配电网潮流算法研究.《华东电力》.2011,第39卷(第1期),第76-80页. |
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