CN104504485A - Integrative power system relay protection setting calculation method - Google Patents

Integrative power system relay protection setting calculation method Download PDF

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Publication number
CN104504485A
CN104504485A CN201410656190.2A CN201410656190A CN104504485A CN 104504485 A CN104504485 A CN 104504485A CN 201410656190 A CN201410656190 A CN 201410656190A CN 104504485 A CN104504485 A CN 104504485A
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data
platform
relay protection
calculation
management
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郭亮
熊华强
桂小智
张妍
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jiangxi Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Jiangxi Electric Power Co Ltd
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Priority to CN201410656190.2A priority Critical patent/CN104504485A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06Electricity, gas or water supply

Abstract

The invention relates to an integrative power system relay protection setting calculation method. The method provides an integrative power relay protection setting calculation data platform, which is of a distributed data platform structure. The method overcomes defects of conventional systems. Servers are gradually built in provincial power distribution center and branch power distribution centers, management platforms and data are also allocated, and multiple resources are integrated, so that an integrative setting calculation method is offered. A software system of the integrative relay protection setting calculation platform adopts a browser/server (B/S) mode. As for overall structure, the software comprises five parts: a user interface, application logic, an application program interface, data service and data exchange with other systems. The overall process of setting calculation sequentially comprises formation of an electric power wiring diagram, short-circuit calculation, setting calculation, off-line verification and management of constant value advice notes. The method is convenient for users to perform setting calculation and greatly improves the setting calculation efficiency.

Description

A kind of relay protection of power system integration synchronizing calculation method
Technical field
The present invention relates to a kind of relay protection of power system integration synchronizing calculation method, propose a kind of relay protection integration adaptive setting platform, belong to relay protection of power system adaptive setting field.
Background technology
Along with the development of computer hardware technique and the continuous expansion of electrical network scale, relay protection devise a stratagem is calculated management information system and is achieved great successes in the research in intelligent, relay protection generalized information management system and the systematic research of network digital protection information of sing on web and Internet are growing, along with expert system technology is applied in relay protection setting calculation analysis and research, the automaticity of relay protection setting calculation and management work improves greatly, ensure that the accuracy of protection definite value to a certain extent, power system safety and stability is run and has important practical significance and economic worth.
The development of electrical network makes the contact between regional power grid day by day tight, and existing Setting Calculation System of Relay Protection is according to each net, provincial electric power company requirement developing separately, has dispersion, isolation, skimble-scamble feature, and various drawback also reveals gradually.On the one hand, the various analytical calculation that current each net, provincial electric power company use and management software are not quite similar, and be a kind of computer system of isolated island formula mostly, data layout between each system is varied, cause data bulk redundancy, the consistance of data is difficult to ensure, exchanging to the maintenance of data, management and inter-system data makes troubles.On the other hand; current each net, economize the mode that the exchanges data called in relay protection setting calculation still adopts system equivalent; the fast development of power grid construction; the contact between each net, province's tune certainly will be caused more and more tightr; need to carry out the data such as grid equipment parameter, equivalent impedance and the cooperation definite value exchanged also to get more and more; system equivalent difficult parameters, to mate completely with running mode, cannot meet the requirement of adaptive setting to accuracy.The data modeling mode that different software adopts, the data layout still disunity of internal applications, effective information in different product adaptive setting process cannot realize sharing completely, for employing adaptive setting software carry out trans-regional, that bulk power grid works in coordination with carrying out of adaptive setting work is totally unfavorable.
The foundation of described data platform must consider that the feature of China's operation of power networks and management system is carried out.The operation and management of China's electrical network has the feature of typical multilevel hierarchy subregion, and grid dispatching center generally adopts the power system monitor way to manage of layering and zoning.Along with the development of infotech and the application of all kinds of computational analysis program and popularization, dispatching center at different levels, all departments have accumulated a large amount of electric network data resources in succession, these data resources are usually all application-specific for this department and set up, and can be regarded as the particular figure of electric system.Because these resources of a variety of causes generally can only be shared poor efficiency between dispatching center and department.In addition, dispatching center at different levels to manage the scope of electrical network different, the safety problem character be concerned about is similar, but concrete condition with administer electrical network and be closely related, there is obvious Area distribution.
The data platform that the present invention proposes also needs to select suitable software system architecture.Existing software systems have two kinds of frameworks substantially, are respectively user terminal/server framework (C/S), browser/server framework (B/S).C/S framework needs special client software, very strong to the control ability of information security, can the existing program module of partial dependency when practical function, but system upgrade is difficult, and is subject to the restriction of operating system, cannot cross-platformly run; And B/S Framework Software only needs browser, comparatively strong to the control ability of information security, the function such as to draw, import and export is higher to development level requirement, and advantage is that system can seamless upgrade, and can cross-platformly run.
Summary of the invention
The object of the invention is; a kind of relay protection of power system integration synchronizing calculation method is proposed; user is facilitated to carry out adaptive setting work; simultaneously along with the continuous propelling that data platform is built; progressively unified power system relay protection data standard, lays the foundation for carrying out on national network bulk power grid adaptive setting work.
For reaching this object, the present invention by the following technical solutions.
A kind of relay protection of power system integration of the present invention synchronizing calculation method; by integrating the data being distributed in multi-stage scheduling center; set up the data platform of unified relay protection of power system integration adaptive setting; utilize the distributed adaptive setting platform of dispatching center at different levels; complete the analytical calculation of the safety problem that dispatching center at different levels is concerned about respectively, thus realize the associating adaptive setting under unified extensive interconnected network background.
Described method economizes tune at net, a point regulation and control center is set up server and disposes management platform and database, integration construct data platform distributed system, and the software systems of described data platform adopt Browser/Server Mode.
A kind of relay protection of power system integration of the present invention synchronizing calculation method is based upon on a unified integration data and graphic platform basis.
The location of the integrated adaptive setting data platform that the present invention proposes is: this data platform is an off-line system; From the angle of dispatch network place of safety, data platform belongs to III district, place of safety; In data platform, the electric network model of constituent parts and grid graph data should not be multiple information islands, but multiple subset that is mutually related in overall grid; Organically blending of with dispatching terminal each DSN can be realized, realize data share and general.
The target of the integrated adaptive setting data platform that the present invention proposes is: based on adaptive setting data center, uniform based data, unified model, unified standard, unified standard, the unified platform, to improve efficiency and the quality of adaptive setting work; On the basis of data platform, there is the relay protection integration adaptive setting function based on whole network data, the demand of the calculating check analysis of the distributed data maintenance management of relay protection management department at different levels and association type can be met, realize the whole network associating adaptive setting; There is embedded adjusting and check software, off-line double calculation can be carried out to relay protection constant value and check; There is fixed value list circulation function, realize the networking Whole Course Management to fixed value list, ensure the examination & verification of relay protection constant value, the high-level efficiency signing and issuing, perform, feed back each link, standardization, safe; There is relay protection function of statistic analysis; realize the statistics to the whole network protective relaying device information and action behavior, accident, defect etc. and analysis; complete the every Reporting Requirements of electric grid relay protection statistical study, for the overall process electronic management of the life cycle management of protective relaying device provides platform.
According to the feature of China's present stage operation of power networks and management, the relay protection setting calculation intergrated workbench that the present invention proposes is a distributed data platform, data platform progressively will economize tune at net, a point regulation and control center is set up server and disposes management platform and database, integration construct data platform distributed system; As shown in Figure 1.All departments and need upgrade in time responsible to the accuracy of the relay protection basic data in its compass of competency, realize that Data distribution8 is safeguarded, responsibility is clear and definite, uniform format.By integrating the data being distributed in multi-stage scheduling center; set up unified data platform; utilize the distributed adaptive setting platform of dispatching center at different levels; complete the analytical calculation of the safety problem that dispatching center at different levels is concerned about respectively, thus realize the associating adaptive setting under unified extensive interconnected network background.
The software systems of the relay protection setting calculation platform that the present invention proposes adopt B/S (browser/server) pattern.The system of B/S pattern generally adopts three-tier architecture, and as shown in Figure 2, client uses browser, not by region and time restriction, can meet big data quantity, high reliability request is responsible for data exhibiting; The process of service logic is responsible for by Web server, and the storage of data is responsible for by database server, and user passes through browser access data platform, without the need to installing client separately.
The whole software structure of the relay protection integration adaptive setting platform that the present invention proposes; be divided into user interface, applied logic, application programming interfaces, data, services and and exchanges data five part of other system; as shown in Figure 3, the function of each several part is as described below.
(1) user interface: provide mutual friendly all-graphic human-computer interaction interface, using power grid topological graph as basic graphic operation platform.User logs in platform by browser, and system will provide different management, data query function according to the rank of user and authority.
(2) applied logic: the key business part being relay protection setting calculation platform; functional modules such as comprising system pipes reason, calculation of fault, adaptive setting, result of adjusting check, fixed value list circulation and statistical study is provided; realize relay protection setting calculation and operating analysis; and then realize the associating adaptive setting of the whole network, improve accuracy and the management level of relay protection setting calculation.
(3) application programming interfaces: utilize the assembly type DAOs such as ADO, realize each functional module of applied logic part to the access of database.
(4) data, services: data base management system (DBMS) adopts the oracle database being applicable to management large shared data bank, manages whole data concentratedly, comprises grid equipment data management, graphical data operation and running mode data management etc.
(5) exchanges data: realize the exchanges data between relay protection setting calculation platform and other system, comprises the whole network master data, device data, plant stand relay protected operation data, the whole network service data, statistic analysis result and and net, economizes the exchange etc. of adjusting critical data between each level system.All data are all stored in unified database.
The relay protection integration adaptive setting platform that the present invention proposes mainly contains three zones: management function, computing function and function of statistic analysis.These functions have been responsible for the functions such as whole network equipment data management, relay protection setting calculation, fixed value list circulation and operating statistic analysis; realize scheduling and the unification of layout data and data and graphically managing; accomplish that the unified management of relay protection setting calculation data, unified distribution, source maintenance, the overall situation are shared, ensure uniqueness and the accuracy of adaptive setting data.
Management function is the basic function of described computing platform; mainly in order to by large-scale management database and computer technology; realize relay protection management and run the standardization of work, digitizing and robotization, realizing the unified management of relay protection setting calculation data, unified distribution, source are safeguarded, the overall situation is shared.Management function module mainly completes the fundamental functional modules such as data management, method of operation management, graphics management, setting management, the management of equipment basic parameter and system management.
Computing module is the main functional realiey module of described platform, completes the computation process that relay protection setting calculation is whole.This functional module is realized by electric power networks wiring diagram; user is on the basis of network connection figure; carry out the typing of related data, amendment, inquiry; carry out the work such as short trouble calculating, adaptive setting and off-line calculation and check; make user can complete whole relay protection setting calculation work on a platform; improve relay protection setting calculation nominal operation efficiency, ensure that the integrality of data, accuracy and uniqueness.Adaptive setting mainly contains short trouble calculating, protection seting calculates, result of adjusting off-line checks three steps.
Integrated interchange relay protection statistical study and operation management system, high voltage direct current protection statistical analysis system on relay protection setting calculation platform; form perfect event, defect, management of inspection information information; and the statistical study of various ways can be carried out, form statistical forms and report.
Above three functional modules divide as shown in Figure 4.
The overall process that the data platform that the integrated synchronizing calculation method that the present invention proposes relies on carries out adaptive setting divides five steps, as described below:
(1) electrical power wiring figure is formed
Data platform, according to the selection of user, forms that user needs to carry out the power network topology figure of adaptive setting to it, outer net can carry out equivalence according to corresponding principle.User manually arranges or obtains from plateform system the information such as corresponding power equipment parameter, the method for operation.
(2) short circuit calculation
Data platform utilizes short trouble computing module, and user, according to actual conditions, from the short trouble software for calculation that main separation is different, carries out corresponding short trouble calculating, obtains short-circuit current.Program can complete whole calculating automatically.
(3) adaptive setting
Data platform utilizes adaptive setting module, and user, according to actual conditions, from the adaptive setting software that main separation is different, according to the short-circuit current that the calculation principle arranged and short circuit calculation module obtain, carries out corresponding adaptive setting, obtains adaptive setting result.Program can complete whole calculating automatically, and user also manually can adjust until meet the demands result of calculation.
(4) off-line is checked
Data platform utilizes off-line to check module, and the adaptive setting result that adaptive setting can obtain by user carries out off-line school, adjusts accordingly until meet the demands the part not meeting protection requirement.
(5) definite value advice note management
Data platform is by definite value advice note administration module, user can manage checking the definite value advice note formed that meets the demands, realize controlling the circulation process such as examination & verification, approval, execution of fixed value list, and Classification Management and inquiry, browse definite value advice note.
Relay protection setting calculation overall process process flow diagram as shown in Figure 5.
The invention has the beneficial effects as follows, relay protection of power system integration synchronizing calculation method of the present invention relies on integrated adaptive setting data platform, data platform integrates multiple software by unified database, solve the inconvenient situation of existing computation process conversion mutually in multiple software, greatly improve the work efficiency of user; Data platform based on adaptive setting data center, uniform based data, unified model, unified standard, unified standard, make adaptive setting process have versatility; Distributed software ar, allows data be stored in distributed database server, ensure that the security of data to greatest extent.
Accompanying drawing explanation
Fig. 1 integrated data platform distributed architecture figure;
Fig. 2 is the three-tier architecture schematic diagram of browser/server (B/S) pattern;
Fig. 3 is relay protection setting calculation platform software overall construction drawing;
The integrated relay protection setting calculation platform feature of Fig. 4 divides figure;
Fig. 5 integrated relay protection setting calculation overall process process flow diagram;
Fig. 6 is entity relationship model figure;
Fig. 7 is relay protection Overall data structure figure.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with accompanying drawing and by the embodiment of example.
For realizing above function, the embodiment of the present invention adopts Oracle 10g data base management system (DBMS), sets up the database that integrated platform of adjusting relies on, to integrate multiple application system.The database data of relay protection setting calculation platform comprises basic data, device parameter data and running mode data three class, and the entity that wherein basic data is corresponding is Grid information, each province's electric network information; Entity corresponding to device parameter data mainly contains the component equipments such as plant stand, transformer, bus, circuit, generator, series compensation capacitance reactance device; The physical system method of operation that running mode data is corresponding and the plant stand method of operation, the plant stand method of operation comprises the running status (whether putting into operation) of each electric network element.
The entity representated by data in the database of the present embodiment integration adaptive setting platform is described by some attributes, and the relation between attribute and entity is showed by the coding form of solid data.As shown in Figure 6, the coding (STN_ID) of certain plant stand given in generator table (GEN), by this STN_ID, the plant stand details that can this STN_ID be found corresponding in plant stand table (Station), the symbol at connecting line two ends represents that these two relations table are relations of one-to-many, namely " 0 " number end expression plant stand can have multiple stage generator, and " 1 " number end expression generator can only belong to a plant stand.In like manner, can the corresponding details finding connection bus in bus (BUS) table by the BUS_ID in generator table.
The present embodiment integration adaptive setting platform utilizes unified modeling language (UML) technology, carries out modeling, set up unified data exchange standard, realize the exchanges data between each application system exchange data.The normal structure of described computing platform data is followed " DL/T 1011-2006 relay protection of power system adaptive setting data interchange format specification "; data, according to the difference of electric power system data type, are divided into electric network data, service data and protected data by the normal structure of data.
The normal structure of electric network data defines impedance parameter and the topological structure position thereof of all elements forming electrical network according to actual physics object, comprise equivalent branch road, two-winding transformer and three-winding transformer between bus, generator, parallel reactance capacitive branch, equivalent ground connection branch road, common line, series compensation capacitance, bus.Meanwhile, system reference value and mutual inductance information is defined.What service data described is system operation mode, i.e. the running status of all elements in system cloud gray model, comprises the putting into operation of element, to stop transport and by earthing mode.The running status of certain or some elements changes, and system operation mode will change thereupon, and an electrical network can have the multiple systems method of operation.Protected data for exchanging has zero sequence current protection data, circuit phase distance protection data and line-to-ground distance protection data.
The present embodiment integration adaptive setting platform, according to data exchange standard structure, utilizes UML to carry out modeling, with actual electric power networks for object carries out modeling, by abstract for the electric power networks of reality in order to a project (Project) to exchange data;-individual electric power networks is made up of several plant stands (Station), is coupled together, include concrete equipment, as generator, transformer, isolating switch etc. under plant stand between plant stand by transmission line of electricity (Line).
The present embodiment integration adaptive setting platform, according to the exchange data structure of design, devises following object class: (1) electric power networks (Grid): be that object is set up with actual electric network; (2) plant stand (Plant): the generating plant in reflection actual electric network, the object class of transformer station; (3) bus (Bus): the object class of reflection actual electric network median generatrix; (4) circuit (Line): the object class of transmission line of electricity in reflection actual electric network; (5) generator (Gen): the object class of generator in reflection actual electric network; (6) transformer (Xfrm): the object class of transformer in reflection actual electric network, distinguishes two-winding transformer and three-winding transformer; (7) series compensation capacitance (LineSC): the object class of series compensation capacitance in reflection actual electric network; (8) parallel reactance electric capacity (LineReactor): the object class of circuit parallel reactance electric capacity in reflection actual electric network; (9) zero-sequence mutual inductance (LineMI): the object class of circuit zero-sequence mutual inductance in reflection actual electric network, according to data interchange format, represents with the form of zero-sequence mutual inductance group; (10) equivalent ground connection branch road; (11) equivalent branch road between bus.
Object class carries out modeling according to relay protection data exchange standard, and therefore, object class embodies the data that data exchange standard comprises on attribute.Such as, can embody system reference capacity in power network object class, the parameters such as system voltage grade, and the attribute of component equipment object class can embody the parameter of element actual physics character and topological structure position.On the basis determining exchange data objects relationship model, utilize UML technology, to its modeling, utilize class figure, can relation between each object of expression of visual pattern, the static relation namely between object class.UML modeling tool adopts StarUML.StarUML is the UML developing instrument of a open source code, can draw 9 kinds of the most frequently used uml diagrams.StarUML can export Java, C++, C# code according to the content of class figure, otherwise, also can read the reverse output class figure of Java, C++, C# code.

Claims (5)

1. a relay protection of power system integration synchronizing calculation method, it is characterized in that, described method is distributed in the data at multi-stage scheduling center by integrating, set up the data platform of unified relay protection of power system integration adaptive setting, utilize the distributed adaptive setting platform of dispatching center at different levels, complete the analytical calculation of the safety problem that dispatching center at different levels is concerned about respectively, thus realize the associating adaptive setting under unified extensive interconnected network background;
Described method economizes tune at net, a point regulation and control center is set up server and disposes management platform and database, integration construct data platform distributed system, and the software systems of described data platform adopt Browser/Server Mode.
2. a kind of relay protection of power system integration synchronizing calculation method according to claim 1, it is characterized in that, described data platform is based on adaptive setting data center, uniform based data, unified model, unified standard, unified standard, the unified platform, to improve efficiency and the quality of adaptive setting work; On the basis of described data platform, there is the relay protection integration adaptive setting function based on whole network data, the demand of the calculating check analysis of the distributed data maintenance management of relay protection management department at different levels and association type can be met, realize the whole network associating adaptive setting; Described data platform has embedded adjusting and checks software, can carry out off-line double calculation check relay protection constant value; There is fixed value list circulation function, realize the networking Whole Course Management to fixed value list, ensure the examination & verification of relay protection constant value, the high-level efficiency signing and issuing, perform, feed back each link, standardization, safe; There is relay protection function of statistic analysis; realize the statistics to the whole network protective relaying device information and action behavior, accident, defect and analysis; complete the every Reporting Requirements of electric grid relay protection statistical study, for the overall process electronic management of the life cycle management of protective relaying device provides platform.
3. a kind of relay protection of power system integration synchronizing calculation method according to claim 1, it is characterized in that, the whole software structure of described data platform, be divided into user interface, applied logic, application programming interfaces, data, services and and exchanges data five part of other system; The function of each several part is:
(1) user interface: provide mutual friendly all-graphic human-computer interaction interface, using power grid topological graph as basic graphic operation platform; User logs in platform by browser, and system will provide different management, data query function according to the rank of user and authority;
(2) applied logic: the key business part being relay protection setting calculation platform, there is provided and comprise system pipes reason, calculation of fault, adaptive setting, result of adjusting check, fixed value list circulation and function of statistic analysis module, realize relay protection setting calculation and operating analysis, and then realize the associating adaptive setting of the whole network, improve accuracy and the management level of relay protection setting calculation;
(3) application programming interfaces: utilize ADO assembly type DAO, realize each functional module of applied logic part to the access of database;
(4) data, services: data base management system (DBMS) adopts the oracle database being applicable to management large shared data bank, manages whole data concentratedly, comprises grid equipment data management, graphical data operation and running mode data management;
(5) exchanges data: realize the exchanges data between relay protection setting calculation platform and other system, comprise the whole network master data, device data, plant stand relay protected operation data, the whole network service data, statistic analysis result and and net, economize the exchange of adjusting critical data between each level system; All data are all stored in unified database.
4. a kind of relay protection of power system integration synchronizing calculation method according to claim 1, it is characterized in that, described data platform possesses three zones: management function, computing function and function of statistic analysis; These functions have been responsible for whole network equipment data management, relay protection setting calculation, fixed value list circulation and operating statistic analytic function, realize scheduling and the unification of layout data and data and graphically managing.
5. a kind of relay protection of power system integration synchronizing calculation method according to claim 1, it is characterized in that, the overall process that described data platform carries out adaptive setting divides five steps:
(1) electrical power wiring figure is formed
Described data platform, according to the selection of user, forms that user needs to carry out the power network topology figure of adaptive setting to it, outer net can carry out equivalence according to corresponding principle; User manually arranges or obtains from plateform system corresponding power equipment parameter, method of operation information;
(2) short circuit calculation
Described data platform utilizes short trouble computing module, and user, according to actual conditions, from the short trouble software for calculation that main separation is different, carries out corresponding short trouble calculating, obtains short-circuit current; Program can complete whole calculating automatically;
(3) adaptive setting
Described data platform utilizes adaptive setting module, user according to actual conditions, from the adaptive setting software that main separation is different, according to the calculation principle arranged and the short-circuit current that obtains of short circuit calculation module, carry out corresponding adaptive setting, obtain adaptive setting result; Program can complete whole calculating automatically, and user also can manually adjust until meet the demands to result of calculation;
(4) off-line is checked
Described data platform utilizes off-line to check module, and the adaptive setting result that adaptive setting can obtain by user carries out off-line school, adjusts until meet the demands accordingly to the part not meeting protection requirement;
(5) definite value advice note management
Described data platform is by definite value advice note administration module, user can manage checking the definite value advice note formed that meets the demands, realize controlling the examination & verification of fixed value list, approval, execution circulation process, and Classification Management and inquiry, browse definite value advice note.
CN201410656190.2A 2014-11-18 2014-11-18 Integrative power system relay protection setting calculation method Pending CN104504485A (en)

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CN110265983A (en) * 2019-07-02 2019-09-20 广东电网有限责任公司 Guard method, device, equipment and the storage medium of transmission line of electricity
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CN111525523B (en) * 2020-05-13 2021-10-01 中国大唐集团科学技术研究院有限公司华东电力试验研究院 New energy power station relay protection fixed value checking method and system based on big data

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Application publication date: 20150408