CN103500249B - Visualization Relay Protection Setting Calculation System and method - Google Patents
Visualization Relay Protection Setting Calculation System and method Download PDFInfo
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Abstract
The present invention proposes visualization Relay Protection Setting Calculation System and method; relate to relay protection field; handling characteristics according to power consumer; develop the visualization adaptive setting system integrated functions as one; including Man Machine Interface module, computing module, data management module and report generation module, complete the drafting of geographical wiring diagram, geographical wiring diagram form network topology structure; complete node serial number and branch number automatically according to wiring diagram, call basic data and carry out short circuit calculation；Calculation principle and formula are stored in computing module, form inactive data by calculation principle, constitute system adaptive setting data with basic data, and when protecting definite value beyond set threshold value, system provides warning；Finally, result of calculation is generated report output.In the method adaptive setting part directly invoke short circuit calculation as a result, it is possible to save the calculating time, the calculating data of each module can be individually created form, it is simple to follow-up analyzing and processing.
Description
Technical field
The present invention relates to Relay Protection Technology in Power System field, especially relate to a kind of visualization relay protection
Adaptive setting system and method.
Background technology
Relay protection is a day-to-day work in power generation, and along with electrical network scale is increasing, knot
Structure is the most complicated, and macro ring, little ring are overlapped, and the long interconnective situation of line short-term is commonplace, many
The electric network composition of sample, the changeable method of operation, polytype different size electrical equipment to relay protection
Different requirements, diversified relay protection scheme scheme, the protection principle of various development and structure
The protective relaying device product that one-tenth, polytype, country variant manufacturer are produced, adds adaptive setting
Workload and complexity.
(1) calculating of traditional relay protection constant value mostly is manual calculation, and manual calculation protection definite value is very
, there is the problem that computational efficiency is low, working strength is big, accuracy rate is low, and protection definite value can not be timely in complexity
Be shown to network operation personnel；
(2) popularizing and deeply, developing some adaptive setting system and methods along with computer, but
Protection fixed value calculation system and method is the independent development of each manufacturer, and the protection numerous types that electrical network relates to can
Can need to use multiple fixed value calculation system and method, the generation of part form needs manually calculating to be tied simultaneously
Fruit establishment is final document format, mistake easily occurs, and workload is big, and repetitive operation is many.Limit
Adaptive setting system and method is in the promotion and application of different regions.
(3) there is function singleness in the adaptive setting that computer completes, visual poor, poor universality, automatic
Change degree is low, lack the feature of automatic converged functionality, poor expandability, and developer is faced with huge journey
Sequence upgrading and maintenance work.
Summary of the invention
It is contemplated that at least solve technical problem present in prior art, the most innovatively propose one
Visualization Relay Protection Setting Calculation System and method.
In order to realize the above-mentioned purpose of the present invention, the invention provides a kind of visualization relay protection setting calculation
System, it is it is critical that include: Man Machine Interface module, data management module, computing module and report
Table generation module；
Man Machine Interface module connects computing module, and described Man Machine Interface module is for opening up according to electrical network
Flutterring structure and electrical network relay element parameter, form the modeling of phantom, computing module arranges electrical network relay ginseng
Number threshold value, described computing module receives electrical network relay element data, is sent to computing module and calculates；
Computing module connects report generation module, and described computing module is based on calculating short-circuit current value and inciting somebody to action
Short-circuit current value after calculation carries out adaptive setting, and the data after calculating compare with relay parameter threshold
Relatively, providing prompting to beyond described threshold range, result of calculation generates report data the most at last, by form
The report data of generation is exported by generation module, is shown to user；
Computing module and report generation module connect data management module respectively, and described data management module is used for
The data that storage computing module prestores and calculates, and the form that report generation module generates is stored.
Technique scheme have the beneficial effect that the mode of connection various to power system, network topology and mould thereof
Type is analyzed, positive sequence needed for forming the data structure needed for short circuit calculation and automatically forming calculating,
Negative phase-sequence and zero-sequence network, effectively combine short circuit calculation and adaptive setting.System and method visualization is high,
Simple to operate, the clear readability of result of calculation, be a new generation power system management system and method, system and
Method can be directly used in the electrical network of reality, alleviates the manual labour that power technology personnel are loaded down with trivial details, time-consuming,
Improve efficiency.
Described visualization Relay Protection Setting Calculation System, it is preferred that described computing module includes: short circuit
Computing module and adaptive setting module, short circuit calculation module connects adaptive setting module and report generation mould respectively
Block, described adaptive setting module connects report generation module；
Described short circuit calculation module is used for calculating three-phase shortcircuit, single-line to ground fault, line to line fault, two connects
Ground short circuit electric current, uses the method to grid nodes with branch road numeral numbering to identify electricity grid network, and electrical network is former
After the input of beginning data, short circuit calculation module carries out automatic numbering to node and branch road, then original to electrical network
Data carry out standardization processing, according to electricity grid network structure, obtain the bus admittance matrix of electricity grid network, right
Admittance matrix is inverted, it is thus achieved that nodal impedance matrix, then arranges short dot, calculates short circuit current, in short circuit
In calculating, calculate electricity grid network symmetrical short-circuit time only need formed positive sequence network, negative sequence network and zero-sequence network,
And zero-sequence network is by consisting of the branch road of zero-sequence current, it is decided by electricity grid network and neutral ground situation,
It it is a subset of the whole network branch road；
Described adaptive setting module setting principle, public affairs of adjusting to relay protection based on code of adjusting promulgated by the ministries or commissions of the Central Government
Formula, sensitivity check, operation time limit and various Protection parameters are analyzed comparing, and generate at setting principle page
Module editor generates setting principle page, described setting principle page include setting principle, tuning formulae, parameter,
Sensitivity check and the explanatory note of operation time limit, distinguish protection title and the setting principle table of different manufacturers
Putting into Data Data management module, when adjusting, the model by being matched protection relay system uses this
The tuning rule of model, carries out tuning formulae and the amendment of the coefficient range of choice.
Technique scheme have the beneficial effect that described computing module includes short circuit calculation module and adaptive setting
Module, after described computing module is by short circuit calculation and adaptive setting, for rationally selecting electrical wiring, choosing
Select the protective measure limiting short circuit current, and reasonable disposition protective relaying device its parameter of adjusting provide weight
Will foundation,.
Described visualization Relay Protection Setting Calculation System, it is preferred that described Man Machine Interface module bag
Include:
MBM, for being modeled electricity grid network, gathers the topological relation between whole electricity grid network,
Obtain geographical wiring diagram, obtain electricity grid network electrical equipment equipment, including circuit, transformator, power plant,
Bus, reactor, the parameter of chopper, import MBM, and the electricity grid network carrying out equal proportion is the most first
The modeling of part equipment, after having modeled, forms the equivalent impedance figure of electricity grid network, it is thus achieved that all electricity grid network
Equivalence to the equivalent parameters of several nodes specified, by short dot, short-circuit-type and system operation mode,
Having the big mode of system and the little mode of system, short-circuit-type arranges wall scroll busbar short-circuit, a plurality of busbar short-circuit, line
The related data of road certain point short circuit stores data management module, electricity grid network parameter number modeling completed
According to being sent to computing module.
Technique scheme have the beneficial effect that geographical wiring diagram and the electrical wiring that can draw power system
Figure, for drawn wiring diagram, it is possible to the interconnected relationship between recognition component automatically.
Described visualization Relay Protection Setting Calculation System, it is preferred that described short circuit calculation module includes:
Short-circuit network forms module, and described short-circuit network forms module and is used for being formed symmetrical short-circuit network and asymmetric short
Road network,
The described symmetrical short-circuit network formed that calculates is positive sequence network, and calculates unsymmetrical short-circuit network and need shape
Becoming positive sequence 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 electricity grid network, negative sequence impedance are identical, will rotate the reactance of element with its negative phase-sequence
Reactance replaces forward-sequence reactance, can form negative sequence network, and zero-sequence network contains the subelement of electrical network, needs
Being individually identified, zero-sequence network is constituted by by the branch road of zero-sequence current, is decided by that electricity grid network and neutral point connect
Ground situation, is a subset of the whole network branch road.
Having the beneficial effect that according to forming symmetrical short-circuit network and unsymmetrical short-circuit network of technique scheme
Situation, processes respectively according to different situations.
Described visualization Relay Protection Setting Calculation System, it is preferred that described data management module storage has:
The component data of electricity grid network in modeling process, the network topology data of formation, and computing module is pre-
Data after depositing and calculating.
Invention additionally discloses a kind of visualization relay protection setting calculation method, it is it is critical that include as follows
Step:
Step 1, sets up basic model and the design of figure meta structure of figure, it is achieved the editting function of figure,
And draw out the graphic elements that the relay protection First Astronautic Research Institute for Measurement and Test needs, including the bus of electricity grid network, power transmission line, change
Depressor, reactor, capacitor, load, electric station, transformer station, and the figure realizing sub-element is nested,
An image-drawing unit is made by conventional main electrical scheme transformer station, and each graphic elements has the attribute of their own, deposits
Storage, in unit form, draws geographical wiring diagram and the electric hookup of electricity grid network, electric at electricity grid network
Initial parameter and the state parameter of various element is drawn on wiring diagram；
Step 2, deposits the display feature one a pair of data, data and figure according to electricity grid network electrical equipment
Should, while changing figure, electrical equipment is deposited data and is changed therewith, selects electrical equipment as required
The data of model, electrical equipment is added Custom Attributes, for each electrical equipment by corresponding
Class represents, class wrapper has the parameter of equipment；
Step 3, calculate short circuit current, described short circuit current include three-phase shortcircuit, single-line to ground fault, two
Short circuit, two-phase grounding fault electric current mutually, calculation of short-circuit current uses grid nodes and branch road numeral numbering
Method identifies network, after the input of electrical network initial data, is numbered node with branch road, then to electrical network
Initial data carry out standardization processing, according to network structure, obtain the bus admittance matrix of network, to leading
Receive matrix inversion, it is thus achieved that nodal impedance matrix, then short dot is set, calculate short circuit current；
Step 4, in electricity grid network relay protection setting calculation, based on code of adjusting promulgated by the ministries or commissions of the Central Government, based on
Class sets up adaptive setting module, makes adaptive setting module have good replaceability and independence, to protection
Setting principle, tuning formulae, sensitivity check, operation time limit and various Protection parameters be analyzed comparing,
At setting principle page editor's setting principle, tuning formulae, parameter, sensitivity check and the word of operation time limit
Illustrate protection title and the setting principle table of different electrical equipments to be distinguished and put into data management module, when adjusting
The tuning rule of this model can be used, when adjusting, according to reality by selecting the protection device model configured
Border situation carries out tuning formulae and the amendment of the coefficient range of choice；
Step 5, uses nested programming technique, and the result of adaptive setting is generated form, whole with application tool
Close, create the application program of call format, the form of output corresponding format.
Technique scheme have the beneficial effect that said method, the modes of connection various to power system, network
Topology and model thereof are analyzed, and form the data structure needed for short circuit calculation and automatically form calculating institute
Positive sequence, negative phase-sequence and the zero-sequence network needed, effectively combines short circuit calculation and adaptive setting.System and method can
High depending on change degree, simple to operate, the clear readability of result of calculation, be a new generation power system management system and
Method, system and method can be directly used in the electrical network of reality, alleviate the manual labour that power technology personnel are loaded down with trivial details,
Time-consuming, improve efficiency.
Described visualization relay protection setting calculation method, it is preferred that described step 3 includes:
Step 3-1, in short circuit calculation, including symmetrical short-circuit and unsymmetrical short-circuit, is calculating electricity grid network
Positive sequence network is formed during middle symmetrical short-circuit,
Step 3-2, and calculate unsymmetrical short-circuit and need to form positive sequence network, negative sequence network and zero-sequence network, and
Zero-sequence network is constituted by by the branch road of zero-sequence current, is decided by network and neutral ground situation, is the whole network
One subset of branch road.
Having the beneficial effect that according to forming symmetrical short-circuit network and unsymmetrical short-circuit network of technique scheme
Situation, processes respectively according to different situations.
Described visualization relay protection setting calculation method, it is preferred that zero-sequence network in described step 3-2
Including:
Step 3-3, the electric pressure at short dot place the transformer neutral point ground connection situation connect determines pre-
Select zero sequence branch road；
Step 3-4, screens preliminary election zero sequence branch road, gets rid of non-zero sequence branch road；
Step 3-5, calculates zero-sequence reactance to the zero sequence branch road determined, again records, numbers, forms zero sequence
Network node admittance matrix.
Having the beneficial effect that by the concrete reality of zero-sequence network in unsymmetrical short-circuit network of technique scheme
The operation of existing method, it is achieved corresponding zero-sequence network function.
Described visualization relay protection setting calculation method, it is preferred that described step 5 includes:
Step 5-1, wherein application tool is that office, AutoCAD, Internet integrate, and creates and adjusts
With the application program of form.
Technique scheme have the beneficial effect that application tool is that office, AutoCAD, Internet are carried out
Integrate, create the application program of call format, it is possible to realize the function of report generation faster.
In sum, owing to have employed 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, letter
Single operational approach, complete graphical modeling, figure automatic marking, the input of component parameters, store and count
Calculate the display of result, export, print the most convenient, alleviate the labor intensity of the personnel of adjusting, and adjust personnel not
Need how strong level professional technology, meet the meaning of power industry reality need；Realize the figure of electric grid operating
Shapeization simulation and emulation, can be used for the power system behavior simulated, study under various fault condition, determines and props up
Each branch current that road electric network fault causes and the situation of change of busbar voltage, to check that equipment stands fault
Ability, determines the working value of protection by fault current, analyzes reasonability and the coordination of protection scheme further
Property；System interface achieves the primary connection figure Aided Design environment of " What You See Is What You Get ", it is achieved that complete graph
The operator scheme of " intelligent, simple, interesting, practical " of shape.
The additional aspect of the present invention and advantage will part be given in the following description, and part will be retouched from following
Become obvious in stating, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from combining the accompanying drawings below description to embodiment
Will be apparent from easy to understand, wherein:
Fig. 1 is the connection diagram that the present invention visualizes Relay Protection Setting Calculation System；
Fig. 2 is the schematic diagram that the present invention visualizes relay protection setting calculation method.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, wherein certainly
Begin to same or similar label eventually represent same or similar element or there is the unit of same or like function
Part.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining the present invention, and can not
It is interpreted as limitation of the present invention.
In describing the invention, it is to be understood that term " longitudinally ", " laterally ", " on ", D score, " front ",
The orientation of the instruction such as " afterwards ", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " or position
Relation of putting, for based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplification is retouched
State rather than indicate or imply that the device of indication or element must have specific orientation, with specific orientation
Structure and operation, be therefore not considered as limiting the invention.
In describing the invention, unless otherwise prescribed and limit, it should be noted that term " is installed ",
" be connected ", " connection " should be interpreted broadly, for example, it may be mechanically connected or electrical connection, it is also possible to be two
The connection of individual element internal, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, for this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term can be understood as the case may be.
The goal of the invention of the present invention is: for the problem of above-mentioned existence, open one visualization relay protection
Adaptive setting system and method, uses Object-oriented Technique and module encapsulation concept and visual programming skill
Art, highly integrated system and method, and improve the operating characteristics of system and method, zero-base to greatest extent
Plinth user be all easy to use.
To achieve these goals, the invention provides a kind of visualization relay protection setting
Calculating system, it is it is critical that include: Man Machine Interface module, data management module, computing module
With report generation module；
Man Machine Interface module connects computing module, and described Man Machine Interface module is for opening up according to electrical network
Flutterring structure and electrical network relay element parameter, form the modeling of phantom, computing module arranges electrical network relay ginseng
Number threshold value, described computing module receives electrical network relay element data, is sent to computing module and calculates；
Computing module connects report generation module, and described computing module is based on calculating short-circuit current value and inciting somebody to action
Short-circuit current value after calculation carries out adaptive setting, and the data after calculating compare with relay parameter threshold,
Report to the police to providing prompting beyond described threshold range, and result of calculation is generated report data, by report generation
The report data of generation is exported by module, is shown to user；
Computing module and report generation module connect data management module respectively, and described data management module is used for
The data that storage computing module prestores and calculates, and the form that report generation module generates is stored.
Described visualization Relay Protection Setting Calculation System, it is preferred that described computing module includes: short circuit
Computing module and adaptive setting module, short circuit calculation module connects adaptive setting module and report generation mould respectively
Block, described adaptive setting module connects report generation module；
Described short circuit calculation module is used for calculating three-phase shortcircuit, single-line to ground fault, line to line fault, two connects
Ground short circuit electric current, uses the method to grid nodes with branch road numeral numbering to identify electricity grid network, and electrical network is former
After the input of beginning data, short circuit calculation module carries out automatic numbering to node and branch road, then original to electrical network
Data carry out standardization processing, according to electricity grid network structure, obtain the bus admittance matrix of electricity grid network, right
Admittance matrix is inverted, it is thus achieved that nodal impedance matrix, then arranges short dot, calculates short circuit current, in short circuit
In calculating, calculate electricity grid network symmetrical short-circuit time only need formed positive sequence network, negative sequence network and zero-sequence network,
And zero-sequence network is by consisting of the branch road of zero-sequence current, it is decided by electricity grid network and neutral ground situation,
It it is a subset of the whole network branch road；
Described adaptive setting module setting principle, public affairs of adjusting to relay protection based on code of adjusting promulgated by the ministries or commissions of the Central Government
Formula, sensitivity check, operation time limit and various Protection parameters are analyzed comparing, and generate at setting principle page
Module editor generates setting principle page, described setting principle page include setting principle, tuning formulae, parameter,
Sensitivity check and the explanatory note of operation time limit, distinguish protection title and the setting principle table of different manufacturers
Putting into Data Data management module, when adjusting, the model by being matched protection relay system uses this
The tuning rule of model, carries out tuning formulae and the amendment of the coefficient range of choice.
Described visualization Relay Protection Setting Calculation System, it is preferred that described Man Machine Interface module bag
Include:
MBM, for being modeled electricity grid network, gathers the topological relation between whole electricity grid network,
Obtain geographical wiring diagram, obtain electricity grid network electrical equipment equipment, including circuit, transformator, power plant,
Bus, reactor, the parameter of chopper, import MBM, and the electricity grid network carrying out equal proportion is the most first
The modeling of part equipment, after having modeled, forms the equivalent impedance figure of electricity grid network, it is thus achieved that all electricity grid network
Equivalence to the equivalent parameters of several nodes specified, by short dot, short-circuit-type and system operation mode,
Having the big mode of system and the little mode of system, short-circuit-type arranges wall scroll busbar short-circuit, a plurality of busbar short-circuit, line
The related data of road certain point short circuit stores data management module, electricity grid network parameter number modeling completed
According to being sent to computing module.
Described visualization Relay Protection Setting Calculation System, it is preferred that described short circuit calculation module includes:
Short-circuit network forms module, and described short-circuit network forms module and is used for being formed symmetrical short-circuit network and asymmetric short
Road network,
The described symmetrical short-circuit network formed that calculates is positive sequence network, and calculates unsymmetrical short-circuit network and need shape
Becoming positive sequence 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 electricity grid network, negative sequence impedance are identical, will rotate the reactance of element with its negative phase-sequence
Reactance replaces forward-sequence reactance, can form negative sequence network, and zero-sequence network contains the subelement of electrical network, needs
Being individually identified, zero-sequence network is constituted by by the branch road of zero-sequence current, is decided by that electricity grid network and neutral point connect
Ground situation, is a subset of the whole network branch road.
Described visualization Relay Protection Setting Calculation System, it is preferred that described data management module storage has:
The component data of electricity grid network in modeling process, the network topology data of formation, and computing module is pre-
Data after depositing and calculating.
1, with Visual Studio2010 as platform, use C++ programming language, set up the base of graphics software
This model and the design of figure meta structure, it is achieved the editting function of figure, and draw such as bus, power transmission line, change
The various relay protection First Astronautic Research Institute for Measurement and Test such as depressor, reactor, capacitor, load, electric station, transformer station need
Graphic elements, and the figure that can realize sub-element is nested, i.e. in order to accelerate plotting speed, conventional master is connect
An image-drawing unit is made by line transformer station, pulls or clicked drawing by mouse.Each pattern primitive
Part has the attribute of their own, is stored in unit form, can draw the geographical wiring diagram of power system with electric
Wiring diagram, for drawn wiring diagram, it is possible to the interconnected relationship between recognition component automatically, permissible
By clicking on mouse on power system wiring diagram, input and browse initial parameter and the state of various element
Parameter.
2, deposit the display feature one_to_one corresponding of data, data and figure according to electrical equipment class, painting
Changing figure in diagram page, data change therewith, and can select the data of the model of element as required.Right
Element adds Custom Attributes, can open correspondence by double click or menucommand for each equipment
Attributes edit dialog box complete the input of device parameter, amendment.All devices element all passes through accordingly
Class represents, the class wrapper parameter of equipment.
3, establishment short-circuit current calculation program, including three-phase shortcircuit, single-line to ground fault, line to line fault,
Two-phase grounding fault.Short-circuit current calculation program uses to be known with the method that branch road numeral is numbered grid nodes
Other network.After the input of electrical network initial data, program carries out automatic numbering, then to electrical network to node and branch road
Initial data carry out standardization processing, according to network structure, it is easy to obtain the bus admittance matrix of network,
Admittance matrix is inverted, it is thus achieved that nodal impedance matrix, then short dot is set, calculate short circuit current.Short
During road calculates, when calculating electrical network symmetrical short-circuit, only need to be formed positive sequence network, and when calculating unsymmetrical short-circuit except
Need to be formed outside positive sequence network, also need to form negative sequence network and zero-sequence network.And zero-sequence network is by by zero sequence electricity
The branch road of stream is constituted, and is decided by network and neutral ground situation, is a subset of the whole network branch road.
4, in relay protection of power system adaptive setting, code of adjusting promulgated by the ministries or commissions of the Central Government is relay protection setting calculation institute
The basic norm that should follow, based on code of adjusting promulgated by the ministries or commissions of the Central Government, it is considered to the special portion of different geographical setting principle
Point, form the setting principle of special area, set up adaptive setting based on the thought of class in Visual C Plus Plus
Module, makes adaptive setting module have good replaceability and independence, for special user, adaptive setting
System and method can be converted into special adaptive setting system and method conveniently and efficiently.
Setting principle, tuning formulae, sensitivity check, operation time limit and the various Protection parameters of protection is entered
Row com-parison and analysis.At setting principle page editor's setting principle, tuning formulae, parameter, sensitivity check and dynamic
Make the explanatory note in time limit.Difference is there is in the protection device produced because of different manufacturers in adaptive setting, so
Protection title and the setting principle table of different manufacturers are distinguished and put into data base, can be joined by selection when adjusting
The model of protection device uses the tuning rule of this model, when adjusting, can adjust according to practical situation
The amendment of formula and the coefficient range of choice etc..
5, use nested programming technique, the result of adaptive setting generated form, with office, AutoCAD,
Internet integrates, and creates the application program of call format, the form of output corresponding format.
As it is shown in figure 1, the outfan of Man Machine Interface module 1 respectively with short circuit calculation module 3, adjust
Computing module 4, report generation module 5 are connected, the outfan of calculation of short-circuit current module 3 and adaptive setting
The input of module 4 is connected, the input of report generation module 5 respectively with the output of adaptive setting module 4
End, the outfan of short circuit calculation module 3 are connected.
Man Machine Interface module 1 supplies the simple and practical power system network topological structure editor of user, pipe
The instrument of reason and conveniently graphic operation means, it is provided that Image editors, user can arbitrarily add, repair
Change plan unit 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, the calculating to each module provides assistance data to process.Adaptive setting module 4 needs to use short
The data of road computing module, data call the calculation procedure depending on adaptive setting module, short circuit calculation and
The result of adaptive setting can be connected report generation module.
As in figure 2 it is shown,
1, first figure is modeled, understands the topological relation between each plant stand and the circuit of region within the jurisdiction,
Specify geographical wiring diagram, specify power system primary connection equipment, including circuit, transformator, power plant,
Bus, reactor, the parameter of chopper, bear including each impedance (positive sequence zero sequence), power factor, maximum
Charged current, rated capacity, rated voltage etc., and the protection device that equipment is configured.According to geographical wiring
Figure, from left to right, draws plant stand and element the most successively, double-clicks element, can arrange title and voltage
Grade, the parameter such as rated capacity.
2, after having drawn, networking equivalent impedance figure is automatically formed, it is thus achieved that an area power grid equivalence is to referring to
The equivalent parameters of several fixed nodes, selects short dot, short-circuit-type and system operation mode, has system
Big mode and the little mode of system, short-circuit-type can arrange wall scroll busbar short-circuit, a plurality of busbar short-circuit, circuit
Certain point short circuit.Completing after parameters arranges, electricity clicks on short circuit calculation icon, i.e. demonstrates on figure
Corresponding short circuit current, in short circuit calculation, only needs when calculating electrical network symmetrical short-circuit to form positive sequence network, and counts
During calculation unsymmetrical short-circuit in addition to need to forming 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, the positive sequence of all stationary elements, negative sequence impedance phase in electrical network
With, it is only necessary to the reactance rotating element is replaced forward-sequence reactance with its negative sequence neactance, negative sequence network can be formed.
And zero-sequence network is totally different from positive sequence network, it comprises only the subelement of electrical network, needs to be individually identified.
Zero-sequence network is constituted by by the branch road of zero-sequence current, is decided by network and neutral ground situation, is the whole network
One subset of branch road.Its forming step is as follows:
(1) the transformer neutral point ground connection situation connect by the electric pressure at short dot place determines preliminary election zero sequence
Branch road;
(2) preliminary election zero sequence branch road is screened, get rid of non-zero sequence branch road;
(3) the zero sequence branch road determined is calculated zero-sequence reactance, again record, number, form zero-sequence network joint
Point admittance matrix.
3, then call adaptive setting module and calculation of short-circuit current result carries out fixed value adjusting calculating, whole
Determining in computing module, the calculation principle defined leaves formation setting principle data base, this side concentratedly
Method can make user that the data messages such as the electrical network parameter in adaptive setting system, fault amount are conducted interviews and adjusted
With.In protection device template, complete the typing of protection device information, specify adaptive setting for each project
Principle, the definite value advice note template of protection device and protection device template one_to_one corresponding.
4, finally the result of short circuit current and the result of adaptive setting are formed form, report calculated document lattice
Formula has corresponding report file form to arrange unit, is configured document format according to required form.
Realize to Classification Management and the inquiry of fixed value list, browse, printing etc..
The present invention visualizes Relay Protection Setting Calculation System and method, the modes of connection various to power system,
Network topology and model thereof are analyzed, and form the data structure needed for short circuit calculation and automatically form meter
Positive sequence, negative phase-sequence and zero-sequence network needed for calculation, effectively combines short circuit calculation and adaptive setting.System and side
Method visualization is high, simple to operate, the clear readability of result of calculation, is the power system management system of a new generation
System and method, system and method can be directly used in the electrical network of reality, alleviate the craft that power technology personnel are loaded down with trivial details
Work, time-consuming, improve efficiency.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ",
The description of " concrete example " or " some examples " etc. means to combine the concrete spy of this embodiment or example description
Levy, structure, material or feature are contained at least one embodiment or the example of the present invention.In this explanation
In book, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, retouch
Specific features, structure, material or the feature stated can be in any one or more embodiments or example
Combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, those of ordinary skill in the art can manage
Solve: these embodiments can be carried out in the case of without departing from the principle of the present invention and objective multiple change,
Amendment, replacement and modification, the scope of the present invention is limited by claim and equivalent thereof.
Claims (6)
1. a visualization Relay Protection Setting Calculation System, it is characterised in that including: man-machine interaction connects
Mouth die block, data management module, computing module and report generation module；
Man Machine Interface module connects computing module, and described Man Machine Interface module is for opening up according to electrical network
Flutterring structure and electrical network relay element parameter, form the modeling of phantom, computing module arranges electrical network relay ginseng
Number threshold value, described computing module receives electrical network relay element data, is sent to computing module and calculates；
Computing module connects report generation module, and described computing module is based on calculating short-circuit current value and inciting somebody to action
Short-circuit current value after calculation carries out adaptive setting, and the data after calculating compare with relay parameter threshold
Relatively, beyond described threshold range, providing prompting, result of calculation generates report data the most at last, form give birth to
Become module to be exported by the report data of generation, be shown to user；
Computing module and report generation module connect data management module respectively, and described data management module is used for
The data that storage computing module prestores and calculates, and the form that report generation module generates is stored；
Method according to described calculating system includes:
Step 1, sets up basic model and the design of figure meta structure of figure, it is achieved the editting function of figure,
And draw out the graphic elements that the relay protection First Astronautic Research Institute for Measurement and Test needs, including the bus of electricity grid network, power transmission line, change
Depressor, reactor, capacitor, load, electric station, transformer station, and the figure realizing sub-element is nested,
An image-drawing unit is made by conventional main electrical scheme transformer station, and each graphic elements has the attribute of their own, deposits
Storage, in unit form, draws geographical wiring diagram and the electric hookup of electricity grid network, electric at electricity grid network
Initial parameter and the state parameter of various element is drawn on wiring diagram；
Step 2, deposits the display feature one a pair of data, data and figure according to electricity grid network electrical equipment
Should, while changing figure, electrical equipment is deposited data and is changed therewith, selects electrical equipment as required
The data of model, electrical equipment is added Custom Attributes, for each electrical equipment by corresponding
Class represents, class wrapper has the parameter of equipment；
Step 3, calculate short circuit current, described short circuit current include three-phase shortcircuit, single-line to ground fault, two
Short circuit, two-phase grounding fault electric current mutually, calculation of short-circuit current uses grid nodes and branch road numeral numbering
Method identifies network, after the input of electrical network initial data, is numbered node with branch road, then to electrical network
Initial data carry out standardization processing, according to network structure, obtain the bus admittance matrix of network, to leading
Receive matrix inversion, it is thus achieved that nodal impedance matrix, then short dot is set, calculate short circuit current；
Step 3-1, in short circuit calculation, including symmetrical short-circuit and unsymmetrical short-circuit, is calculating electricity grid network
Positive sequence network is formed during middle symmetrical short-circuit,
Step 3-2, and calculate unsymmetrical short-circuit and need to form positive sequence network, negative sequence network and zero-sequence network, and
Zero-sequence network is constituted by by the branch road of zero-sequence current, is decided by network and neutral ground situation, is the whole network
One subset of branch road；
Step 3-3, the electric pressure at short dot place the transformer neutral point ground connection situation connect determines pre-
Select zero sequence branch road；
Step 3-4, screens preliminary election zero sequence branch road, gets rid of non-zero sequence branch road；
Step 3-5, calculates zero-sequence reactance to the zero sequence branch road determined, again records, numbers, forms zero sequence
Network node admittance matrix；
Step 4, in electricity grid network relay protection setting calculation, based on code of adjusting promulgated by the ministries or commissions of the Central Government, based on
Class sets up adaptive setting module, makes adaptive setting module have good replaceability and independence, to protection
Setting principle, tuning formulae, sensitivity check, operation time limit and various Protection parameters be analyzed comparing,
At setting principle page editor's setting principle, tuning formulae, parameter, sensitivity check and the word of operation time limit
Illustrate protection title and the setting principle table of different electrical equipments to be distinguished and put into data management module, when adjusting
The tuning rule of this model can be used, when adjusting, according to reality by selecting the protection device model configured
Border situation carries out tuning formulae and the amendment of the coefficient range of choice；
Step 5, uses nested programming technique, and the result of adaptive setting is generated form, whole with application tool
Close, create the application program of call format, the form of output corresponding format.
Visualization Relay Protection Setting Calculation System the most according to claim 1, it is characterised in that
Described computing module includes: short circuit calculation module and adaptive setting module, and short circuit calculation module connects whole respectively
Determining computing module and report generation module, described adaptive setting module connects report generation module；
Described short circuit calculation module is used for calculating three-phase shortcircuit, single-line to ground fault, line to line fault, two connects
Ground short circuit electric current, uses the method to grid nodes with branch road numeral numbering to identify electricity grid network, and electrical network is former
After the input of beginning data, short circuit calculation module carries out automatic numbering to node and branch road, then original to electrical network
Data carry out standardization processing, according to electricity grid network structure, obtain the bus admittance matrix of electricity grid network, right
Admittance matrix is inverted, it is thus achieved that nodal impedance matrix, then arranges short dot, calculates short circuit current, in short circuit
In calculating, calculate electricity grid network symmetrical short-circuit time only need formed positive sequence network, negative sequence network and zero-sequence network,
And zero-sequence network is by consisting of the branch road of zero-sequence current, it is decided by electricity grid network and neutral ground situation,
It it is a subset of the whole network branch road；
Described adaptive setting module setting principle, public affairs of adjusting to relay protection based on code of adjusting promulgated by the ministries or commissions of the Central Government
Formula, sensitivity check, operation time limit and various Protection parameters are analyzed comparing, and generate at setting principle page
Module editor generates setting principle page, described setting principle page include setting principle, tuning formulae, parameter,
Sensitivity check and the explanatory note of operation time limit, distinguish protection title and the setting principle table of different manufacturers
Putting into Data Data management module, when adjusting, the model by being matched protection relay system uses this
The tuning rule of model, carries out tuning formulae and the amendment of the coefficient range of choice.
Visualization Relay Protection Setting Calculation System the most according to claim 1, it is characterised in that
Described Man Machine Interface module includes:
MBM, for being modeled electricity grid network, gathers the topological relation between whole electricity grid network,
Obtain geographical wiring diagram, obtain electricity grid network electrical equipment equipment, including circuit, transformator, power plant,
Bus, reactor, the parameter of chopper, import MBM, and the electricity grid network carrying out equal proportion is the most first
The modeling of part equipment, after having modeled, forms the equivalent impedance figure of electricity grid network, it is thus achieved that all electricity grid network
Equivalence to the equivalent parameters of several nodes specified, by short dot, short-circuit-type and system operation mode,
Having the big mode of system and the little mode of system, short-circuit-type arranges wall scroll busbar short-circuit, a plurality of busbar short-circuit, line
The related data of road certain point short circuit stores data management module, electricity grid network parameter number modeling completed
According to being sent to computing module.
Visualization Relay Protection Setting Calculation System the most according to claim 1, it is characterised in that
Described short circuit calculation module includes: short-circuit network forms module, and described short-circuit network forms module and is used for being formed
Symmetrical short-circuit network and unsymmetrical short-circuit network,
The described symmetrical short-circuit network formed that calculates is positive sequence network, and calculates unsymmetrical short-circuit network and need shape
Becoming positive sequence 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 electricity grid network, negative sequence impedance are identical, will rotate the reactance of element with its negative phase-sequence
Reactance replaces forward-sequence reactance, can form negative sequence network, and zero-sequence network contains the subelement of electrical network, needs
Being individually identified, zero-sequence network is constituted by by the branch road of zero-sequence current, is decided by that electricity grid network and neutral point connect
Ground situation, is a subset of the whole network branch road.
Visualization Relay Protection Setting Calculation System the most according to claim 1, it is characterised in that
Described data management module storage has:
The component data of electricity grid network in modeling process, the network topology data of formation, and computing module is pre-
Data after depositing and calculating.
Visualization Relay Protection Setting Calculation System the most according to claim 1, it is characterised in that
Described step 5 includes:
Step 5-1, wherein application tool is that office, AutoCAD, Internet integrate, and creates and adjusts
With the application program of form.
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| CN102930070B (en) * | 2011-12-30 | 2015-08-26 | 白山发电厂 | A kind of transformer unit relay protection constant value automatic setting method |
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