CN103500249A - Visual relay protection setting calculation system and method - Google Patents
Visual relay protection setting calculation system and method Download PDFInfo
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Abstract
The invention provides a visual relay protection setting calculation system and method, and relates to the field of relay protection. According to the using characteristics of power consumers, the visual setting calculation system integrated multiple functions is developed and comprises a man-machine interaction interface module, a calculation module, a data management module and a report generation module. The visual relay protection setting calculation method comprises the steps that drawing of a geographical wiring diagram is finished, a network topology structure is formed by the geographical wiring diagram, node numbering and branch node numbering are automatically finished according to the geographical wiring diagram, and short-circuit calculation is carried out by calling essential data; a setting calculation principle and a formula are stored in the calculation module, stand-by data are formed according to the setting calculation principle, system setting calculation data are formed by the stand-by data and the essential data, and the system gives an alarm when a protection constant value is larger than a set threshold value; finally, a report is generated by calculation results to be output. According to the visual relay protection setting calculation method, short-circuit calculation results are directly called in a setting calculation part, the calculation time can be saved, the report can be singly generated by the calculation data of each module, and subsequent analyzing and processing can be conveniently achieved.
Description
Technical field
The present invention relates to the Relay Protection Technology in Power System field, especially relate to a kind of visual Relay Protection Setting Calculation System and method.
Background technology
Relay protection is a day-to-day work in electrical production, and along with the electrical network scale is increasing, structure is also day by day complicated, large ring, little ring is overlapped, the interconnective situation of long line short-term is commonplace, diversified electric network composition, the changeable method of operation, the different requirements of the electrical equipment of polytype different size to relay protection, diversified relay protection allocation plan, protection principle and the formation of various developments, polytype, the protective relaying device product that country variant manufacturer produces, workload and the complexity of adjusting and calculating have been increased.
(1) calculating of traditional relay protection constant value mostly is hand computation, and hand computation protection definite value is very complicated, has the problem that counting yield is low, working strength is large, accuracy rate is low, and the protection definite value can not be shown to the network operation personnel timely;
(2) popularizing and going deep into along with computing machine; some adjust computing system and methods have been developed; but protection definite value computing system and method are each manufacturer's independent development; the protection numerous types that electrical network relates to; may need to use a plurality of definite value computing systems and method, it is manually final document format by the result of calculation establishment that the generation of part form needs, and mistake easily occurs simultaneously; and workload is large, repetitive operation is many.Computing system and the method promotion and application in different regions of adjusting have been limited.
(3) computing machine completes adjusts to calculate and has function singleness, visual poor, versatility is poor, automaticity is low, lack the characteristics of automatic converged functionality, poor expandability, the developer is faced with huge program upgrade and maintenance work.
Summary of the invention
The present invention is intended at least solve the technical matters existed in prior art, has proposed to special innovation a kind of visual Relay Protection Setting Calculation System and method.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of visual Relay Protection Setting Calculation System, its key is, comprising: Man Machine Interface module, data management module, computing module and report generation module;
The Man Machine Interface module connects computing module, described Man Machine Interface module is used for according to topological structure of electric and electrical network relay element parameter, form the modeling of realistic model, computing module arranges electrical network relay parameter threshold, described computing module receives electrical network relay element data, sends to computing module and is calculated;
Computing module connects the report generation module, described computing module is for calculating short-circuit current value and by the calculating of being adjusted of the short-circuit current value after calculating, and data and relay parameter threshold after calculating are compared, to exceeding the prompting that provides of described threshold range, result of calculation generating report forms data the most at last, by the report generation module, the report data of generation is exported, be shown to the user;
Computing module and report generation module be the connection data administration module respectively, and described data management module is for storing the data that computing module prestores and calculates, and the form that the report generation module is generated is stored.
The beneficial effect of technique scheme is: the various modes of connection of electric system, network topology and model thereof are analyzed, form the required data structure of short circuit calculation, also automatically form and calculate required positive sequence, negative phase-sequence and zero-sequence network, by short circuit calculation and the effective combination of calculating of adjusting.The system and method visualization is high, simple to operate, the clear readability of result of calculation, be power system management system and method for new generation, system and method can be directly used in actual electrical network, alleviates the loaded down with trivial details hand labour of power technology personnel, save time, raise the efficiency.
Described visual Relay Protection Setting Calculation System, preferably, described computing module comprises: short circuit calculation module and the computing module of adjusting, and the short circuit calculation module connects respectively adjust computing module and report generation module, and the described computing module of adjusting connects the report generation module;
Described short circuit calculation module is for calculating three-phase shortcircuit, single-line to ground fault, line to line fault, the two phase ground short-circuit current, employing is identified the electrical network network to the method for grid nodes and branch road numeral number, after the input of electrical network raw data, the short circuit calculation module is carried out automatic numbering to node and branch road, then the raw data of electrical network is carried out to standardization processing, according to the electrical network network structure, obtain the bus admittance matrix of electrical network network, admittance matrix is inverted, obtain nodal impedance matrix, then short dot is set, calculate short-circuit current, in short circuit calculation, only need to form positive sequence network while calculating electrical network network symmetrical short-circuit, negative sequence network and zero-sequence network, and zero-sequence network consists of the branch road by zero-sequence current, be decided by electrical network network and neutral ground situation, it is a subset of the whole network branch road,
The described computing module of adjusting be take the rules of adjusting promulgated by the ministries or commissions of the Central Government as the setting principle of basis to relay protection, tuning formulae, sensitivity check, operation time limit and various Protection parameters are analyzed relatively, at setting principle page generation module, editor generates the setting principle page, described setting principle page comprises setting principle, tuning formulae, parameter, the explanatory note of sensitivity check and operation time limit, the protection title of different manufacturers and the differentiation of setting principle table are put into to the data data management module, the model of matching the protection relay system while adjusting by selecting is used the tuning rule of this model, carry out the modification of tuning formulae and coefficient range of choice.
The beneficial effect of technique scheme is: described computing module comprises the short circuit calculation module and the computing module of adjusting; described computing module is by after short circuit calculation and the calculating of adjusting; for the choose reasonable electrical wiring; the safeguard measure of selectional restriction short circuit current; and reasonable disposition protective relaying device its parameter of adjusting provide important evidence.
Described visual Relay Protection Setting Calculation System, preferred, described Man Machine Interface module comprises:
MBM, for the electrical network network is carried out to modeling, gather the topological relation between whole electrical network networks, obtain geographical wiring diagram, obtain electrical network network electrical equipment equipment, comprise circuit, transformer, generating plant, bus, reactor, the parameter of isolating switch, import MBM, carry out the modeling of the electrical network network electrical equipment equipment of equal proportion, after modeling completes, form the equivalent impedance figure of electrical network network, obtain the equivalent parameters of the equivalence of whole electrical network networks to several nodes of appointment, by short dot, short-circuit-type and system operation mode, the large mode of system and the little mode of system are arranged, short-circuit-type arranges the wall scroll busbar short-circuit, many busbar short-circuits, the related data of some short circuits of circuit stores data management module into, the electrical network network parameter data that modeling is completed send to computing module.
The beneficial effect of technique scheme is: can draw geographical wiring diagram and the electric hookup of electric system, and for drawn wiring diagram, the interconnected relationship between recognition component automatically.
Described visual Relay Protection Setting Calculation System, preferred, described short circuit calculation module comprises: short-circuit network forms module, and described short-circuit network forms module and is used to form symmetrical short-circuit network and unsymmetrical short-circuit network,
The symmetrical short-circuit network that described calculating forms is positive sequence network, need to form positive sequence network and calculate the unsymmetrical short-circuit network, negative sequence network and zero-sequence network, for negative sequence network, its structure is identical with positive sequence network, the positive sequence of all stationary elements in the electrical network network, negative sequence impedance is identical, the reactance of rotating element is replaced to forward-sequence reactance with its negative sequence neactance, can form negative sequence network, the subelement that zero-sequence network contains electrical network, need identification separately, zero-sequence network consists of the branch road by zero-sequence current, be decided by electrical network network and neutral ground situation, it is a subset of the whole network branch road.
The beneficial effect of technique scheme is: according to the situation that forms symmetrical short-circuit network and unsymmetrical short-circuit network, according to different situations, process respectively.
Described visual Relay Protection Setting Calculation System, preferred, described data management module stores:
The component data of electrical network network in modeling process, the network topology data of formation, and computing module prestore and calculate after data.
The present invention also discloses a kind of visual relay protection setting computing method, and its key is, comprises the steps:
Step 1, set up the design of basic model and the figure meta structure of figure, realize the editting function of figure, and draw out relay protection and measure needed graphic elements, the bus that comprises the electrical network network, power transmission line, transformer, reactor, capacitor, load, power house, transformer station, and the figure of realizing sub-element is nested, a drawing unit is made to by main electrical scheme transformer station commonly used, each graphic elements has its oneself attribute, be stored in the unit form, draw geographical wiring diagram and the electric hookup of electrical network network, draw initial parameter and the state parameter of various elements on electrical network network electric hookup,
Step 2, according to electrical network network electrical equipment store data, the indicating characteristic of data and figure is corresponding one by one, when changing figure, the electrical equipment store data changes thereupon, selects as required the data of the model of electrical equipment, and electrical equipment is added to Custom Attributes, for each electrical equipment, by corresponding class, mean, class is packaged with the parameter of equipment;
Step 3, calculate short-circuit current, described short-circuit current comprises three-phase shortcircuit, single-line to ground fault, line to line fault, two phase ground short-circuit current, calculation of short-circuit current adopts carrys out recognition network to the method for grid nodes and branch road numeral number, after the input of electrical network raw data, node and branch road are numbered, then the raw data of electrical network is carried out to standardization processing, according to network structure, obtain the bus admittance matrix of network, admittance matrix is inverted, obtain nodal impedance matrix, then short dot is set, calculates short-circuit current;
Step 4, in electrical network network relay protection setting calculates, take the rules of adjusting promulgated by the ministries or commissions of the Central Government as basis, set up based on class the computing module of adjusting, the computing module that makes to adjust has good replaceability and independence, setting principle to protection, tuning formulae, sensitivity check, operation time limit and various Protection parameters are analyzed relatively, at setting principle page editor setting principle, tuning formulae, parameter, the explanatory note of sensitivity check and operation time limit is put into data management module by the protection title of different electrical equipments and the differentiation of setting principle table, can use by the protective device model of selecting to configure the tuning rule of this model while adjusting, while adjusting, carry out the modification of tuning formulae and coefficient range of choice according to actual conditions,
Step 5, adopt nested programming technique, to the generating report forms as a result of adjusting and calculating, with application tool, integrates, and creates the application program of call format, the form of output corresponding format.
The beneficial effect of technique scheme is: said method, the various modes of connection of electric system, network topology and model thereof are analyzed, form the required data structure of short circuit calculation, also automatically form and calculate required positive sequence, negative phase-sequence and zero-sequence network, by short circuit calculation and the effective combination of calculating of adjusting.The system and method visualization is high, simple to operate, the clear readability of result of calculation, be power system management system and method for new generation, system and method can be directly used in actual electrical network, alleviates the loaded down with trivial details hand labour of power technology personnel, save time, raise the efficiency.
Described visual relay protection setting computing method, preferred, described step 3 comprises:
Step 3-1, in short circuit calculation, comprise symmetrical short-circuit and unsymmetrical short-circuit, forms positive sequence network in calculating the electrical network network during symmetrical short-circuit,
Step 3-2, need form positive sequence network and calculate unsymmetrical short-circuit, negative sequence network and zero-sequence network, and zero-sequence network consists of the branch road by zero-sequence current, is decided by network and neutral ground situation, is a subset of the whole network branch road.
The beneficial effect of technique scheme is: according to the situation that forms symmetrical short-circuit network and unsymmetrical short-circuit network, according to different situations, process respectively.
Described visual relay protection setting computing method, preferred, in described step 3-2, zero-sequence network comprises:
Step 3-3, the transformer neutral point ground connection situation connect by the electric pressure at short dot place is determined preliminary election zero sequence branch road;
Step 3-4, screened preliminary election zero sequence branch road, gets rid of non-zero sequence branch road;
Step 3-5, calculate zero-sequence reactance to definite zero sequence branch road, again records, numbers, forms the zero-sequence network bus admittance matrix.
The beneficial effect of technique scheme is: the operation by the concrete methods of realizing of zero-sequence network in right title short-circuit network, realize corresponding zero-sequence network function.
Described visual relay protection setting computing method, preferred, described step 5 comprises:
Step 5-1, wherein application tool is that office, AutoCAD, Internet are integrated, and creates the application program of call format.
The beneficial effect of technique scheme is: application tool is that office, AutoCAD, Internet are integrated, and creates the application program of call format, can realize faster the function of report generation.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
Powerful drawing function and editting function, good interpersonal interactive interface, graphical effect attractive in appearance, the shirtsleeve operation method, complete graphical modeling, figure automatic marking, the demonstration of the input of component parameters, storage and result of calculation, output, printing all facilitate, alleviate the personnel's of adjusting labour intensity, and the personnel that adjust do not need how strong level professional technology, meet the meaning of power industry reality needs; Realize graphical simulation and the emulation of electric grid operating, can be used for simulation, study the electric system behavior under various fault conditions, determine each branch current that the branch road electric network fault causes and the situation of change of busbar voltage, stand the ability of fault with checkout facility, determine the working value of protection by fault current, further analyze rationality and the harmony of protection scheme; System interface has been realized the primary connection figure Computer Aided Design environment of " What You See Is What You Get ", has realized the operator scheme of complete patterned " intelligent, simple, interesting, practicality ".
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
The accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the connection diagram of the visual Relay Protection Setting Calculation System of the present invention;
Fig. 2 is the schematic diagram of the visual relay protection setting computing method of the present invention.
Embodiment
Below describe embodiments of the invention in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label means same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " vertically ", " laterally ", " on ", orientation or the position relationship of the indications such as D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as limitation of the present invention.
In description of the invention, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, can be also the connection of two element internals, can be directly to be connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Goal of the invention of the present invention is: for the problem of above-mentioned existence; a kind of visual Relay Protection Setting Calculation System and method are disclosed; adopt Object-oriented Technique and module package concept and visual programming technology; height integrated system and method; and improve to greatest extent the operating performance of system and method, zero-base plinth user is easy to use.
To achieve these goals, the invention provides a kind of visual Relay Protection Setting Calculation System, its key is, comprising: Man Machine Interface module, data management module, computing module and report generation module;
The Man Machine Interface module connects computing module, described Man Machine Interface module is used for according to topological structure of electric and electrical network relay element parameter, form the modeling of realistic model, computing module arranges electrical network relay parameter threshold, described computing module receives electrical network relay element data, sends to computing module and is calculated;
Computing module connects the report generation module, described computing module is for calculating short-circuit current value and by the calculating of being adjusted of the short-circuit current value after calculating, data and relay parameter threshold after calculating are compared, provide the prompting warning to exceeding described threshold range, and by result of calculation generating report forms data, by the report generation module, the report data of generation is exported, be shown to the user;
Computing module and report generation module be the connection data administration module respectively, and described data management module is for storing the data that computing module prestores and calculates, and the form that the report generation module is generated is stored.
Described visual Relay Protection Setting Calculation System, preferably, described computing module comprises: short circuit calculation module and the computing module of adjusting, and the short circuit calculation module connects respectively adjust computing module and report generation module, and the described computing module of adjusting connects the report generation module;
Described short circuit calculation module is for calculating three-phase shortcircuit, single-line to ground fault, line to line fault, the two phase ground short-circuit current, employing is identified the electrical network network to the method for grid nodes and branch road numeral number, after the input of electrical network raw data, the short circuit calculation module is carried out automatic numbering to node and branch road, then the raw data of electrical network is carried out to standardization processing, according to the electrical network network structure, obtain the bus admittance matrix of electrical network network, admittance matrix is inverted, obtain nodal impedance matrix, then short dot is set, calculate short-circuit current, in short circuit calculation, only need to form positive sequence network while calculating electrical network network symmetrical short-circuit, negative sequence network and zero-sequence network, and zero-sequence network consists of the branch road by zero-sequence current, be decided by electrical network network and neutral ground situation, it is a subset of the whole network branch road,
The described computing module of adjusting be take the rules of adjusting promulgated by the ministries or commissions of the Central Government as the setting principle of basis to relay protection, tuning formulae, sensitivity check, operation time limit and various Protection parameters are analyzed relatively, at setting principle page generation module, editor generates the setting principle page, described setting principle page comprises setting principle, tuning formulae, parameter, the explanatory note of sensitivity check and operation time limit, the protection title of different manufacturers and the differentiation of setting principle table are put into to the data data management module, the model of matching the protection relay system while adjusting by selecting is used the tuning rule of this model, carry out the modification of tuning formulae and coefficient range of choice.
Described visual Relay Protection Setting Calculation System, preferred, described Man Machine Interface module comprises:
MBM, for the electrical network network is carried out to modeling, gather the topological relation between whole electrical network networks, obtain geographical wiring diagram, obtain electrical network network electrical equipment equipment, comprise circuit, transformer, generating plant, bus, reactor, the parameter of isolating switch, import MBM, carry out the modeling of the electrical network network electrical equipment equipment of equal proportion, after modeling completes, form the equivalent impedance figure of electrical network network, obtain the equivalent parameters of the equivalence of whole electrical network networks to several nodes of appointment, by short dot, short-circuit-type and system operation mode, the large mode of system and the little mode of system are arranged, short-circuit-type arranges the wall scroll busbar short-circuit, many busbar short-circuits, the related data of some short circuits of circuit stores data management module into, the electrical network network parameter data that modeling is completed send to computing module.
Described visual Relay Protection Setting Calculation System, preferred, described short circuit calculation module comprises: short-circuit network forms module, and described short-circuit network forms module and is used to form symmetrical short-circuit network and unsymmetrical short-circuit network,
The symmetrical short-circuit network that described calculating forms is positive sequence network, need to form positive sequence network and calculate the unsymmetrical short-circuit network, negative sequence network and zero-sequence network, for negative sequence network, its structure is identical with positive sequence network, the positive sequence of all stationary elements in the electrical network network, negative sequence impedance is identical, the reactance of rotating element is replaced to forward-sequence reactance with its negative sequence neactance, can form negative sequence network, the subelement that zero-sequence network contains electrical network, need identification separately, zero-sequence network consists of the branch road by zero-sequence current, be decided by electrical network network and neutral ground situation, it is a subset of the whole network branch road.
Described visual Relay Protection Setting Calculation System, preferred, described data management module stores:
The component data of electrical network network in modeling process, the network topology data of formation, and computing module prestore and calculate after data.
1, take Visual Studio2010 as platform; adopt the C++ programming language; set up the design of basic model and the figure meta structure of graphics software; realize the editting function of figure; and drafting is measured needed graphic elements as various relay protections such as bus, power transmission line, transformer, reactor, capacitor, load, power house, transformer stations; and the figure that can realize sub-element is nested; in order to accelerate plotting speed; a drawing unit is made to by main electrical scheme transformer station commonly used, by mouse, pull or clicked drawing.Each graphic elements has its oneself attribute, be stored in the unit form, can draw geographical wiring diagram and the electric hookup of electric system, for drawn wiring diagram, automatically the interconnected relationship between recognition component, can, by clicking the mouse on the electric system wiring diagram, input and browse initial parameter and the state parameter of various elements.
2, carry out store data according to the electrical equipment class, the indicating characteristic of data and figure is corresponding one by one, in the drawing page, changes figure, and data change thereupon, and the data of the model of selectors as required.Element is added to Custom Attributes, for each equipment, can open input, the modification that corresponding attributes edit dialog box is carried out the finishing equipment parameter by double-clicking mouse or menucommand.The all devices element all means by corresponding class, and class has encapsulated the parameter of equipment.
3, the establishment short-circuit current calculation program, comprise three-phase shortcircuit, single-line to ground fault, line to line fault, two phase ground short circuit.Short-circuit current calculation program adopts carrys out recognition network to the method for grid nodes and branch road numeral number.After the input of electrical network raw data, program is carried out automatic numbering to node and branch road, then the raw data of electrical network is carried out to standardization processing, according to network structure, be easy to obtain the bus admittance matrix of network, admittance matrix is inverted, obtain nodal impedance matrix, then short dot is set, calculates short-circuit current.In short circuit calculation, only need to form positive sequence network while calculating the electrical network symmetrical short-circuit, and while calculating unsymmetrical short-circuit except need form positive sequence network, also need to form negative sequence network and zero-sequence network.And zero-sequence network consists of the branch road by zero-sequence current, be decided by network and neutral ground situation, be a subset of the whole network branch road.
4, in relay protection of power system is adjusted calculating; the rules of adjusting promulgated by the ministries or commissions of the Central Government are that relay protection setting calculates the basic norm that should follow; take the rules of adjusting promulgated by the ministries or commissions of the Central Government as basis; consider the special part of different geographical setting principle; form the setting principle of special area; thought based on class in the Visual C Plus Plus is set up the computing module of adjusting; the computing module that makes to adjust has good replaceability and independence; for the special user, computing system and the method for adjusting can be converted into special-purpose adjust computing system and method quickly and easily.
Setting principle, tuning formulae, sensitivity check, operation time limit and the various Protection parameters of protection are analyzed relatively.Explanatory note at setting principle page editor setting principle, tuning formulae, parameter, sensitivity check and operation time limit.There is difference because of the protective device of different manufacturers production adjusting in calculating; so the protection title of different manufacturers and the differentiation of setting principle table are put into to database; the model that can join by selecting protective device while adjusting is used the tuning rule of this model; while adjusting, can carry out according to actual conditions the modification of tuning formulae and coefficient range of choice etc.
5, adopt nested programming technique, to the generating report forms as a result of adjusting and calculating, integrate with office, AutoCAD, Internet, create the application program of call format, the form of output corresponding format.
As shown in Figure 1, the output terminal of Man Machine Interface module 1 is connected with short circuit calculation module 3, the computing module 4 of adjusting, report generation module 5 respectively, the output terminal of calculation of short-circuit current module 3 is connected with the input end of the computing module 4 of adjusting, and the input end of report generation module 5 is connected with the output terminal of the computing module 4 of adjusting, the output terminal of short circuit calculation module 3 respectively.
Man Machine Interface module 1 is supplied with the simple and practical power system network topological structure editor of user, instrument and the conveniently graphic operation means of management, and Image editors is provided, and the user can add arbitrarily, revise pel to adapt to the needs of real work; Data management module 2 carries out the multi-faceted management of data, in conjunction with database technology, to the calculating of each module, provides auxiliary data to process.The computing module 4 of adjusting need to be used the data of short circuit calculation module, data call the calculation procedure that depends on the computing module of adjusting, short circuit calculation and the result of calculating of adjusting can be connected the report generation module.
As shown in Figure 2,
1, at first figure is carried out to modeling; understand each plant stand of region within the jurisdiction and the topological relation between circuit; clear and definite geographical wiring diagram; clear and definite electric system primary connection equipment; the parameter that comprises circuit, transformer, generating plant, bus, reactor, isolating switch; comprise each impedance (positive sequence zero sequence), power factor, maximum load current, rated capacity, rated voltage etc., and the protective device that configures of equipment.According to geographical wiring diagram, from left to right, draw successively from top to bottom plant stand and element, double-click element, title and electric pressure can be set, the parameters such as rated capacity.
2, after having drawn, automatically form networking equivalent impedance figure, obtain the equivalent parameters of equivalent several nodes to appointment of an area power grid, select short dot, short-circuit-type and system operation mode, the large mode of system and the little mode of system are arranged, and short-circuit-type can arrange wall scroll busbar short-circuit, many busbar short-circuits, some short circuits of circuit.After completing parameters and arranging, electricity is clicked the short circuit calculation icon, demonstrate corresponding short-circuit current on figure in short circuit calculation, only need to form positive sequence network while calculating the electrical network symmetrical short-circuit, and while calculating unsymmetrical short-circuit except need form positive sequence network, also need to form negative sequence network and zero-sequence network.For negative sequence network, its structure is identical with positive sequence network, and the positive sequence of all stationary elements in electrical network, negative sequence impedance are identical, only need the reactance of rotating element is replaced to forward-sequence reactance with its negative sequence neactance, can form negative sequence network.And zero-sequence network is different from positive sequence network fully, it only contains the subelement of electrical network, need to identify separately.Zero-sequence network consists of the branch road by zero-sequence current, is decided by network and neutral ground situation, is a subset of the whole network branch road.It is as follows that it forms step:
(1) the transformer neutral point ground connection situation connect by the electric pressure at short dot place is determined preliminary election zero sequence branch road;
(2) preliminary election zero sequence branch road is screened, got rid of non-zero sequence branch road;
(3) definite zero sequence branch road is calculated to zero-sequence reactance, again record, number, form the zero-sequence network bus admittance matrix.
3, then call adjust computing module and calculation of short-circuit current result and carry out fixed value adjusting calculating, in the computing module of adjusting, the calculation principle defined is left concentratedly and is formed the setting principle database, and this method can make the user conduct interviews and call data messages such as the electrical network parameter in the computing system of adjusting, fault amounts.Completed the typing of protective device information in the protective device template, for each project, specified calculation principle, the definite value advice note template of protective device is corresponding one by one with the protective device template.
4, finally the result of the result of short-circuit current and the calculating of adjusting is formed to form, the report calculated document format has corresponding report file formatting unit, according to needed form, document format is arranged.Realization to Classification Management and the inquiry of fixed value list, browse, printing etc.
The visual Relay Protection Setting Calculation System of the present invention and method; the various modes of connection of electric system, network topology and model thereof are analyzed; form the required data structure of short circuit calculation, also automatically form and calculate required positive sequence, negative phase-sequence and zero-sequence network, by short circuit calculation and the effective combination of calculating of adjusting.The system and method visualization is high, simple to operate, the clear readability of result of calculation, be power system management system and method for new generation, system and method can be directly used in actual electrical network, alleviates the loaded down with trivial details hand labour of power technology personnel, save time, raise the efficiency.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
1. a visual Relay Protection Setting Calculation System, is characterized in that, comprising: Man Machine Interface module, data management module, computing module and report generation module;
The Man Machine Interface module connects computing module, described Man Machine Interface module is used for according to topological structure of electric and electrical network relay element parameter, form the modeling of realistic model, computing module arranges electrical network relay parameter threshold, described computing module receives electrical network relay element data, sends to computing module and is calculated;
Computing module connects the report generation module, described computing module is for calculating short-circuit current value and by the calculating of being adjusted of the short-circuit current value after calculating, and data and relay parameter threshold after calculating are compared, exceed described threshold range, provide prompting, result of calculation generating report forms data, exported the report data of generation by the report generation module the most at last, is shown to the user;
Computing module and report generation module be the connection data administration module respectively, and described data management module is for storing the data that computing module prestores and calculates, and the form that the report generation module is generated is stored.
2. visual Relay Protection Setting Calculation System according to claim 1, it is characterized in that, described computing module comprises: short circuit calculation module and the computing module of adjusting, the short circuit calculation module connects respectively adjust computing module and report generation module, and the described computing module of adjusting connects the report generation module;
Described short circuit calculation module is for calculating three-phase shortcircuit, single-line to ground fault, line to line fault, the two phase ground short-circuit current, employing is identified the electrical network network to the method for grid nodes and branch road numeral number, after the input of electrical network raw data, the short circuit calculation module is carried out automatic numbering to node and branch road, then the raw data of electrical network is carried out to standardization processing, according to the electrical network network structure, obtain the bus admittance matrix of electrical network network, admittance matrix is inverted, obtain nodal impedance matrix, then short dot is set, calculate short-circuit current, in short circuit calculation, only need to form positive sequence network while calculating electrical network network symmetrical short-circuit, negative sequence network and zero-sequence network, and zero-sequence network consists of the branch road by zero-sequence current, be decided by electrical network network and neutral ground situation, it is a subset of the whole network branch road,
The described computing module of adjusting be take the rules of adjusting promulgated by the ministries or commissions of the Central Government as the setting principle of basis to relay protection, tuning formulae, sensitivity check, operation time limit and various Protection parameters are analyzed relatively, at setting principle page generation module, editor generates the setting principle page, described setting principle page comprises setting principle, tuning formulae, parameter, the explanatory note of sensitivity check and operation time limit, the protection title of different manufacturers and the differentiation of setting principle table are put into to the data data management module, the model of matching the protection relay system while adjusting by selecting is used the tuning rule of this model, carry out the modification of tuning formulae and coefficient range of choice.
3. visual Relay Protection Setting Calculation System according to claim 1, is characterized in that, described Man Machine Interface module comprises:
MBM, for the electrical network network is carried out to modeling, gather the topological relation between whole electrical network networks, obtain geographical wiring diagram, obtain electrical network network electrical equipment equipment, comprise circuit, transformer, generating plant, bus, reactor, the parameter of isolating switch, import MBM, carry out the modeling of the electrical network network electrical equipment equipment of equal proportion, after modeling completes, form the equivalent impedance figure of electrical network network, obtain the equivalent parameters of the equivalence of whole electrical network networks to several nodes of appointment, by short dot, short-circuit-type and system operation mode, the large mode of system and the little mode of system are arranged, short-circuit-type arranges the wall scroll busbar short-circuit, many busbar short-circuits, the related data of some short circuits of circuit stores data management module into, the electrical network network parameter data that modeling is completed send to computing module.
4. visual Relay Protection Setting Calculation System according to claim 1, is characterized in that, described short circuit calculation module comprises: short-circuit network forms module, and described short-circuit network forms module and is used to form symmetrical short-circuit network and unsymmetrical short-circuit network,
The symmetrical short-circuit network that described calculating forms is positive sequence network, need to form positive sequence network and calculate the unsymmetrical short-circuit network, negative sequence network and zero-sequence network, for negative sequence network, its structure is identical with positive sequence network, the positive sequence of all stationary elements in the electrical network network, negative sequence impedance is identical, the reactance of rotating element is replaced to forward-sequence reactance with its negative sequence neactance, can form negative sequence network, the subelement that zero-sequence network contains electrical network, need identification separately, zero-sequence network consists of the branch road by zero-sequence current, be decided by electrical network network and neutral ground situation, it is a subset of the whole network branch road.
5. visual Relay Protection Setting Calculation System according to claim 1, is characterized in that, described data management module stores:
The component data of electrical network network in modeling process, the network topology data of formation, and computing module prestore and calculate after data.
6. visual relay protection setting computing method, is characterized in that, comprises the steps:
Step 1, set up the design of basic model and the figure meta structure of figure, realize the editting function of figure, and draw out relay protection and measure needed graphic elements, the bus that comprises the electrical network network, power transmission line, transformer, reactor, capacitor, load, power house, transformer station, and the figure of realizing sub-element is nested, a drawing unit is made to by main electrical scheme transformer station commonly used, each graphic elements has its oneself attribute, be stored in the unit form, draw geographical wiring diagram and the electric hookup of electrical network network, draw initial parameter and the state parameter of various elements on electrical network network electric hookup,
Step 2, according to electrical network network electrical equipment store data, the indicating characteristic of data and figure is corresponding one by one, when changing figure, the electrical equipment store data changes thereupon, selects as required the data of the model of electrical equipment, and electrical equipment is added to Custom Attributes, for each electrical equipment, by corresponding class, mean, class is packaged with the parameter of equipment;
Step 3, calculate short-circuit current, described short-circuit current comprises three-phase shortcircuit, single-line to ground fault, line to line fault, two phase ground short-circuit current, calculation of short-circuit current adopts carrys out recognition network to the method for grid nodes and branch road numeral number, after the input of electrical network raw data, node and branch road are numbered, then the raw data of electrical network is carried out to standardization processing, according to network structure, obtain the bus admittance matrix of network, admittance matrix is inverted, obtain nodal impedance matrix, then short dot is set, calculates short-circuit current;
Step 4, in electrical network network relay protection setting calculates, take the rules of adjusting promulgated by the ministries or commissions of the Central Government as basis, set up based on class the computing module of adjusting, the computing module that makes to adjust has good replaceability and independence, setting principle to protection, tuning formulae, sensitivity check, operation time limit and various Protection parameters are analyzed relatively, at setting principle page editor setting principle, tuning formulae, parameter, the explanatory note of sensitivity check and operation time limit is put into data management module by the protection title of different electrical equipments and the differentiation of setting principle table, can use by the protective device model of selecting to configure the tuning rule of this model while adjusting, while adjusting, carry out the modification of tuning formulae and coefficient range of choice according to actual conditions,
Step 5, adopt nested programming technique, to the generating report forms as a result of adjusting and calculating, with application tool, integrates, and creates the application program of call format, the form of output corresponding format.
7. visual relay protection setting computing method according to claim 6, is characterized in that, described step 3 comprises:
Step 3-1, in short circuit calculation, comprise symmetrical short-circuit and unsymmetrical short-circuit, forms positive sequence network in calculating the electrical network network during symmetrical short-circuit,
Step 3-2, need form positive sequence network and calculate unsymmetrical short-circuit, negative sequence network and zero-sequence network, and zero-sequence network consists of the branch road by zero-sequence current, is decided by network and neutral ground situation, is a subset of the whole network branch road.
8. visual relay protection setting computing method according to claim 7, is characterized in that, in described step 3-2, zero-sequence network comprises:
Step 3-3, the transformer neutral point ground connection situation connect by the electric pressure at short dot place is determined preliminary election zero sequence branch road;
Step 3-4, screened preliminary election zero sequence branch road, gets rid of non-zero sequence branch road;
Step 3-5, calculate zero-sequence reactance to definite zero sequence branch road, again records, numbers, forms the zero-sequence network bus admittance matrix.
9. visual relay protection setting computing method according to claim 6, is characterized in that, described step 5 comprises:
Step 5-1, wherein application tool is that office, AutoCAD, Internet are integrated, and creates the application program of call format.
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