CN110489729A - The automatic switching method and system of disaster-ridden kind of the power grid of D5000-matpower coupling cascading failure model - Google Patents
The automatic switching method and system of disaster-ridden kind of the power grid of D5000-matpower coupling cascading failure model Download PDFInfo
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Abstract
The present invention discloses a kind of automatic switching method of disaster-ridden kind of the power grid coupling cascading failure model of D5000-matpower, comprising: the first data are obtained from D5000 system；The second data are obtained from Relay Protection Setting Calculation System；The transformer model of first data is converted into model of power transmission system；The capacity for taking the transformer in the first data is updated as the limit current-carrying capacity of the transmission line of electricity in model of power transmission system into the first data；Judge whether the element title in the second data matches with element title in the first data；From the first data, parameter needed for choosing description model of matpower and secondary model establishes a model and secondary model as member variable respectively；The probability for obtaining each failure in the electric network element fault set and set under disaster-ridden kind of coupling condition, determines that parameter needed for describing each failure in electric network element fault set as member variable, obtains disaster-ridden kind of coupling cascading failure model of power grid.The accuracy that the present invention improves the efficiency of model generation and model generates.
Description
Technical field
The present invention relates to Power System Analysis control fields, more particularly, to disaster-ridden kind of the power grid of D5000-matpower
Couple the automatic switching method and system of cascading failure model.
Background technique
With the generation that takes place frequently of power grid disaster, people are to power supply reliability, Transient simulation fineness, requirement of real-time
Continuous improvement, under disaster-ridden kind of coupling condition power grid risk analysis demand it is also more more and more urgent.D5000 is extensive at present
The power grid state information acquisition software of use can be analyzed for power grid risk and provide real-time data.Matpower software is wide
The Power grid structure planning software of general application, can carry out the functions such as tidal current analysis, multilayer output feedback network, its main feature is that can be with
Customized development function.
D5000 system is established by each net provincial company regulation department, and data are cumbersome, complicated for operation, and by system development
Unit for the actual electric network structure (situations such as such as whether there is or not DC lines, SVG) of each net provincial company, operating specification and specially develop
Function and data structure, it is expensive.And there are the possibility that critical data is divulged a secret, network system other unit is not available this and is
System.It exports the E formatted file generated and is formed by each the electric network data integrated of net provincial company, and the element for including can achieve hundreds of
Ten thousand.Matpower software open source can carry out the simulation analysis such as Load flow calculation, electromagnetic transient simulation, cascading failure analysis, function
Can be powerful, calculating speed is fast, easy to operate, using very extensive.
Currently, using matpower in the research process of tool, to be all 118 nodes provided using developer, 2383
The standard case file of node, does not there is the simulation analysis example for Chinese practice power grid.Load flow calculation, electromechanical transient, electromagnetism
Transient state and the data of cascading failure analysis are complicated, if to utilize matpower simulation analysis Chinese practice electric network data, one
As need to be carried out by veteran professional to carry out data processing and typing by element, this is a complexity and heavy work
Make.More seriously, it is limited to software emulation scale and simulation object, needs to build differing complexity for different problems
Model, this undoubtedly adds the difficulty of modeling, causes that conversion process easily malfunctions and mistake is difficult to check, and affects emulation and builds
The efficiency of mould.Meanwhile existing method fails to consider the acting characteristic of relay protection and external disaster environment (such as mountain fire, outer broken
And ice damage) developmenting spread real-time condition, can not be analyzed in real time for power grid risk and data basis is provided.
Summary of the invention
The present invention provides the automatic switching methods that disaster-ridden kind of a kind of power grid couples cascading failure model, to solve at present
Using matpower simulation analysis actual electric network data, required parameter is deficient, need to be carried out by veteran professional by
Element carries out data processing and typing, and modeling process complexity is heavy, modeling is error-prone and the wrong technology for being difficult to investigate on the spot is asked
Topic.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of automatic switching method of disaster-ridden kind of the power grid of D5000-matpower coupling cascading failure model, including it is following
Step:
The first data are obtained from D5000 system；The second data are obtained from Relay Protection Setting Calculation System；
Based on the first data, the transformer model of the first data is converted into model of power transmission system；Take the first data
In the capacity of transformer update into the first data as the limit current-carrying capacity of the transmission line of electricity in model of power transmission system；
Judge whether the element title in the second data matches with element title in the first data, the is retained when mismatching
Element title and parameter in one data；Upon a match, the corresponding parameter of the element title of the second data is taken to replace the first data
In corresponding parameter；
From the first data, parameter needed for choosing description model of matpower and secondary model becomes as member
Amount, establishes a model and secondary model respectively；
The probability for obtaining each failure in the electric network element fault set and set under disaster-ridden kind of coupling condition, determines power grid
Parameter needed for element fault concentrates each failure of description is built on the basis of a model and secondary model as member variable
Vertical disaster-ridden kind of coupling cascading failure model of power grid.
Preferably, further include, from Setting Management System of Protective Relaying or fault information management system acquisition transformer and
The relay protection constant value of transmission line of electricity；The relay protection constant value of transformer and transmission line of electricity is updated into the first data；
Before judge whether the element title in the second data matches with element title in the first data and parameter, side
Method further include: read data of power grid and electric grid secondary data, data of power grid include the first data and the second data, electricity
Net secondary data includes the relay protection constant value of transformer and transmission line of electricity；
Relay protection constant value includes the relay protection setting value of each transmission line of electricity, relay protection setting value include: away from
From protection, current protection, temperature protection and voltage protection.
Preferably, the electric network element fault set under disaster-ridden kind of coupling condition is obtained from one or more system below
It takes: transmission line forest fire forecast system, transmission line forest fire monitoring, ice damage on-line monitoring system, icing forecast system or external force
Damage monitoring system；
Electric network element fault set includes: compromised line name, compromised time interval and when compromised
Between in section corresponding timing node tripping probability.
Preferably, the first data include: topological data, transmission line parameter, transformer parameter and the load parameter of power grid；
Second data include: topological data, transmission line parameter, transformer parameter and the load parameter of power grid；It is defeated in second data
Electric line parameter further include: line length.
Preferably, it when establishing a model, secondary model and or disaster-ridden kind of coupling cascading failure model of power grid, including adjusts
The topological data of power grid is written in matpower file with write-in function；
Member variable needed for model of matpower include: generator parameter, transmission line parameter, bus parameter,
Transformer parameter；Member variable, that is, Substation parameters of model, bus parameter, capacitor parameters, reactor parameter and
The parameter type of the elements such as generator parameter, load parameter.
Member variable needed for matpower secondary model includes: corresponding to generator, transmission line of electricity, bus and transformer
Protective device parameter, it is fixed to specifically include overcurrent protection definite value, low-voltage variation definite value, underfrequency protection definite value and impedance protection
Value.
Preferably, the topological data of power grid include: Substation parameters, bus parameter, capacitor parameters, reactor parameter,
Generator parameter and load parameter；
Wherein, Substation parameters include: serial number, plant stand name, voltage class and plant stand type；
Bus parameter includes: bus name, voltage class, place topological node, voltage, phase angle, stop transport mark and calculating
Node；
Capacitor parameters include title, voltage class, rated capacity, voltage rating, link position, place topological node,
Active power, reactive power, stop transport mark and calculate node；
Reactor parameter include title, voltage class, rated capacity, voltage rating, link position, place topological node,
Active power, reactive power, stop transport mark and calculate node；
Generator parameter includes: generator name, equivalent generator mark, equivalent position, voltage rating, rated capacity, connects
Enter network voltage grade, place topological node, active power, reactive power, set end voltage, set end voltage phase angle, stop transport mark,
The active power upper limit, active power lower limit, the reactive power upper limit, reactive power lower limit, rated power factor and calculate node.
Preferably, transformer parameter includes: transformer name, winding type, high-voltage end voltage class, intermediate voltage terminal voltage etc.
Grade, low-pressure end voltage class, high-voltage end rated capacity, intermediate voltage terminal rated capacity, low-pressure end rated capacity, high-voltage end tap are most
High tap position, high-voltage end tap lowest gear, the specified gear of high-voltage end tap, high-voltage end tap is differential, high-voltage end is specified
Voltage, intermediate voltage terminal tap highest gear, intermediate voltage terminal tap lowest gear, the specified gear of intermediate voltage terminal tap, intermediate voltage terminal point
Connector is differential, intermediate voltage terminal voltage rating, low-pressure end voltage rating, high-voltage winding resistance, high-voltage winding reactance, middle pressure winding electricity
Topology section where topological node, intermediate voltage terminal where resistance, middle pressure winding reactance, low pressure winding resistance, low pressure winding reactance, high-voltage end
Point, low-pressure end place topological node, mark is cut-off in high-pressure side, medium voltage side cut-offs mark, low-pressure side cut-offs mark, high-voltage end calculates
Node, intermediate voltage terminal calculate node, low-pressure end calculate node, high-voltage winding reactance per unit value, middle pressure winding resistance per unit value, middle pressure
Winding reactance per unit value, low pressure winding resistance per unit value, low pressure winding reactance per unit value；
Transmission line parameter includes transmission line of alternation current parameter, and transmission line of alternation current parameter includes: alternating current circuit name, voltage
Topology where topological node, the end J where grade, equivalent road way signs, line resistance, line reactance, line one-end susceptance, the end I
Node, the end I cut-off mark, mark is cut-off at the end J, allow current-carrying capacity, the end I electrical island number, the end J electrical island number, line resistance mark
Value, line reactance per unit value and line one-end susceptance per unit value；
Load parameter include: load name, voltage class, duty value mark, equivalent link position, place topological node,
Active power, reactive power, stop transport mark and calculate node.
Preferably, the transformer parameter of the first data is converted into transmission line of electricity, comprising: by volume two become be converted to one it is defeated
Electric line, and or the changes of volume three are converted into three transmission lines of electricity.
Preferably, by the period 1 from the E formatted file in D5000 system, comprising the following steps:
Substation data card is read, substation's class set is obtained；
Bus data card is read, bus class set is obtained；
ACline data card is read, alternating current circuit class set is obtained；
DCline data card is read, DC line class set is obtained；
Transformer data card is read, transformer class set is obtained；
Unit data card is read, electric machinery set is obtained；
Compensator_P, Compensator_S data card are read, capacitor class, reactor class set are obtained；
The first data for parsing E formatted file acquisition power grid, the topological data including generating power grid according to E formatted file,
The following steps are included:
Judge the title of bus bar elements A and the end the I place topological node attribute or J of alternating current circuit, DC line element B
Whether topological node where end is consistent, if the end I or the end J of consistent then B connect bus A；
Where topological node attribute where judging the title of bus bar elements A and the end I of the transformer element C of volume two or the end J
Whether topological node is consistent, if the end I or the end J of consistent then C connect bus A；
Where topological node where judging the title of bus bar elements A and the high-voltage end of three-circuit transformer element D or intermediate voltage terminal
Whether topological node where topological node or low-pressure end consistent, if the consistent then corresponding high-voltage end of element D or intermediate voltage terminal or
Person's low-pressure end connects bus A；
Whether the title for judging bus bar elements A and the place topological node title of generator element E are consistent, if unanimously then
The leading-out terminal of E connects bus A；
Judge whether title and the place topological node title of capacitor or reactor element F of bus bar elements A are consistent, it is false
The F connection bus A if consistent；
For each element number, the topological data of power grid is formed.
The present invention also provides a kind of computer system, including memory, processor and storage are on a memory and can be
The step of computer program run on processor, processor realizes any of the above-described method when executing computer program.
The invention has the following advantages:
The automatic switching method of disaster-ridden kind of the power grid of D5000-matpower of the invention coupling cascading failure model, In
The E formatted data of D5000 obtains the device parameter of power grid on the basis of being parsed, realize matpower by data conversion
File power grid topological parameter assignment；The automatic conversion for realizing disaster-ridden kind of power grid coupling cascading failure model is power grid
Cascading failure risk analysis provides data basis.It is Parameter Switch and typing that this method, which can avoid artificial progress matpower modeling,
Hard work and simulation parameter mistake be difficult to the drawbacks of investigating on the spot, improve model generation efficiency and model generate it is accurate
Property, the efficiency and credibility of electromagnetic transient simulation modeling can be improved.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to accompanying drawings, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is oneself of disaster-ridden kind of the power grid of the D5000-matpower of preferred embodiment of the present invention coupling cascading failure model
The flow diagram of dynamic conversion method.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
And so-called E language is 35.040 State Grid Corporation of China company standard Q/GDW 215-2008 of ICS in the present embodiment
Electric power system data markup language；
So-called Relay Protection Setting Calculation System is Provincial Power Grid Corporation, regional power grid company or general headquarters in the present embodiment
The operation management of regulation center relay protection sections, the department be both Relay Protection Setting Calculation System data relevant departments and
Data use department.Due to D5000 system data be from field device acquire, vulnerable to equipment dependability, network availability,
The factors such as artificial maintenance influence, and accuracy is poor compared to Relay Protection Setting Calculation System.Fault information management system is provincial
Grid company, regional power grid company or general headquarters regulate and control the operation management of center relay protection sections, can be read by the system existing
The definite value of field protective relaying device, thus more accurate compared to the definite value of Relay Protection Setting Calculation System.But it is not all
Scene protection definite value can be collected reading, therefore, the definite value of fault information management system can only be whole as relay protection
Determine a check of computing system definite value.
The automatic switching method of disaster-ridden kind of the power grid of the D5000-matpower of the present embodiment coupling cascading failure model, packet
Include following steps:
The first data are obtained from D5000 system；The second data are obtained from Relay Protection Setting Calculation System；
Based on the first data, the transformer model of the first data is converted into model of power transmission system；Take the first data
In the capacity of transformer update into the first data as the limit current-carrying capacity of the transmission line of electricity in model of power transmission system；
Judge whether the element title in the second data matches with element title in the first data, the is retained when mismatching
Element title and parameter in one data；Upon a match, the corresponding parameter of the element title of the second data is taken to replace the first data
In corresponding parameter；
From the first data, parameter needed for choosing description model of matpower and secondary model becomes as member
Amount, establishes a model and secondary model respectively；
The probability for obtaining each failure in the electric network element fault set and set under disaster-ridden kind of coupling condition, determines power grid
Parameter needed for element fault concentrates each failure of description is built on the basis of a model and secondary model as member variable
Vertical disaster-ridden kind of coupling cascading failure model of power grid.
The device parameter that power grid is obtained on the basis of the E formatted data of D5000 is parsed, is realized by data conversion
The topological parameter assignment of the power grid of the file of matpower；Realize disaster-ridden kind of power grid coupling cascading failure model from turn
It changes, provides data basis for the analysis of power grid cascading failure risk.
When actual implementation, above method also can be carried out expansion or application below, the technical characteristic in following embodiment
It can be combined with each other, embodiment not as the normal combination to technical characteristic only as an example, limit.
Embodiment 1:
The automatic switching method of disaster-ridden kind of the power grid of the D5000-matpower of the present embodiment coupling cascading failure model, packet
Include following steps:
S1: by the period 1 from the E formatted file in D5000 system；Period 1 is 5-15 minutes.By the period 1 from
E formatted file in D5000 system, comprising the following steps:
Substation data card is read, substation's class set is obtained；
Bus data card is read, bus class set is obtained；
ACline data card is read, alternating current circuit class set is obtained；
DCline data card is read, DC line class set is obtained；
Transformer data card is read, transformer class set is obtained；
Unit data card is read, electric machinery set is obtained；
Compensator_P, Compensator_S data card are read, capacitor class, reactor class set are obtained.
Above-mentioned seven kinds of data card is all that the data card from D5000 BPA system converts.The first data of power grid from
Data card parsing, a data card correspond to the data of a type in the first data, specifically contain substation, bus
The component types such as class, alternating current circuit class, DC line class, transformer class, electric machinery, capacitor class, reactor class.
Also transformer can be acquired from Setting Management System of Protective Relaying or fault information management system according to second round
With the relay protection constant value of transmission line of electricity；The relay protection constant value of transformer and transmission line of electricity is updated into the first data；The
Two cycles are -5 days 1 day.Relay protection constant value includes the relay protection setting value of each transmission line of electricity, relay protection setting value
It include: distance protection, current protection, temperature protection and voltage protection.
S2: the first data that the E formatted file obtains power grid are parsed.First data include: the topological data, defeated of power grid
Electric line parameter, transformer parameter and load parameter.Wherein, the topological data of power grid include: Substation parameters, bus parameter,
Capacitor parameters, reactor parameter, generator parameter and load parameter；
Wherein, Substation parameters include: serial number, plant stand name, voltage class and plant stand type；
Bus parameter includes: bus name, voltage class, place topological node, voltage, phase angle, stop transport mark and calculating
Node；
Capacitor parameters include title, voltage class, rated capacity, voltage rating, link position, place topological node,
Active power, reactive power, stop transport mark and calculate node；
Reactor parameter include title, voltage class, rated capacity, voltage rating, link position, place topological node,
Active power, reactive power, stop transport mark and calculate node；
Generator parameter includes: generator name, equivalent generator mark, equivalent position, voltage rating, rated capacity, connects
Enter network voltage grade, place topological node, active power, reactive power, set end voltage, set end voltage phase angle, stop transport mark,
The active power upper limit, active power lower limit, the reactive power upper limit, reactive power lower limit, rated power factor and calculate node.
Transformer parameter includes: transformer name, winding type, high-voltage end voltage class, intermediate voltage terminal voltage class, low-pressure end
Voltage class, high-voltage end rated capacity, intermediate voltage terminal rated capacity, low-pressure end rated capacity, high-voltage end tap highest gear, height
Pressure side tap lowest gear, the specified gear of high-voltage end tap, high-voltage end tap be differential, high-voltage end voltage rating, middle pressure
Hold tap highest gear, intermediate voltage terminal tap lowest gear, the specified gear of intermediate voltage terminal tap, intermediate voltage terminal tap it is differential,
Intermediate voltage terminal voltage rating, low-pressure end voltage rating, high-voltage winding resistance, high-voltage winding reactance, middle pressure winding resistance, middle pressure winding
Topological node, low-pressure end institute where topological node, intermediate voltage terminal where reactance, low pressure winding resistance, low pressure winding reactance, high-voltage end
Mark is cut-off in topological node, high-pressure side, medium voltage side cut-offs mark, low-pressure side cut-offs mark, high-voltage end calculate node, intermediate voltage terminal
Calculate node, low-pressure end calculate node, high-voltage winding reactance per unit value, middle pressure winding resistance per unit value, middle pressure winding reactance mark
Value, low pressure winding resistance per unit value, low pressure winding reactance per unit value；
Transmission line parameter includes transmission line of alternation current parameter, and transmission line of alternation current parameter includes: alternating current circuit name, voltage
Topology where topological node, the end J where grade, equivalent road way signs, line resistance, line reactance, line one-end susceptance, the end I
Node, the end I cut-off mark, mark is cut-off at the end J, allow current-carrying capacity, the end I electrical island number, the end J electrical island number, line resistance mark
Value, line reactance per unit value and line one-end susceptance per unit value；
Load parameter include: load name, voltage class, duty value mark, equivalent link position, place topological node,
Active power, reactive power, stop transport mark and calculate node.
Above-mentioned parsing E formatted file obtains the first data of power grid, the topology including generating power grid according to E formatted file
Data, comprising the following steps:
Judge the title of bus bar elements A and the end the I place topological node attribute or J of alternating current circuit, DC line element B
Whether topological node where end is consistent, if the end I or the end J of consistent then B connect bus A；
Where topological node attribute where judging the title of bus bar elements A and the end I of the transformer element C of volume two or the end J
Whether topological node is consistent, if the end I or the end J of consistent then C connect bus A；
Where topological node where judging the title of bus bar elements A and the high-voltage end of three-circuit transformer element D or intermediate voltage terminal
Whether topological node where topological node or low-pressure end consistent, if the consistent then corresponding high-voltage end of element D or intermediate voltage terminal or
Person's low-pressure end connects bus A；
Whether the title for judging bus bar elements A and the place topological node title of generator element E are consistent, if unanimously then
The leading-out terminal of E connects bus A；
Judge whether title and the place topological node title of capacitor or reactor element F of bus bar elements A are consistent, it is false
The F connection bus A if consistent；
For each element number, the topological data of power grid is formed.
It is in order to according to bus bar elements and transmission line of electricity, transformer, capacitor, reactor, hair by above-mentioned analyzing step
Connection relationship between the elements such as motor determines the topological structure of power grid.Such as bus: cloud field become 500 kilovolts of mothers I number into
5539, group mountain becomes 500 kilovolts of mothers II number as 5860, and the bus number of the end the I connection of cloud cluster line is the mother of the end 5539, J connection
Line number is 5870, then knows that the end the I connection cloud field of cloud cluster line becomes 500 kilovolts of mothers I, the end J is not that the group mountain of connection becomes 500 kilovolts
II is female.
S3: read Relay Protection Setting Calculation System in the second data, the second data include: power grid topological data,
Transmission line parameter, transformer parameter, load parameter and line length.
S4: the transformer parameter of first data is converted as transmission line of electricity；It include: that the changes of volume two are converted into a transmission of electricity
Route, and or the changes of volume three are converted into three transmission lines of electricity.
S5: the permission current-carrying capacity attribute value (transformation of each transmission line of electricity in the transformer parameter in the second data is obtained
The capacity of device), using the permission current-carrying capacity attribute value as the limit current-carrying capacity of the transmission line of electricity in the model of power transmission system,
In the transmission line parameter for updating first data；
S6: become from parameter needed for each element describes model of matpower is chosen in first data as member
Amount establishes a model, calls write-in function that the data of parameter are written in matpower file；Model of matpower
Required member variable includes: generator parameter, transmission line parameter, bus parameter and transformer parameter.Model
Member variable, that is, Substation parameters, bus parameter, capacitor parameters, reactor parameter and generator parameter, load parameter etc.
The parameter type of element.
S7: reading data of power grid and electric grid secondary data, data of the power grid include first data and
Second data, the electric grid secondary data include the relay protection constant value of transformer and transmission line of electricity, are judged in the second data
Whether element title matches with element title in the first data, and element title and ginseng in the first data are retained when mismatching
Number when matching, takes the content of the second data to replace the corresponding content in the first data, takes the element title pair of the second data
The parameter answered replaces corresponding parameter in first data.Parameter ratio D5000 system in Relay Protection Setting Calculation System
Middle parameter is more accurate.Such title is compared mutually to confirm the numerical value of data, it is ensured that electric network data it is accurate.
S8: according to the requirement of matpower file, member needed for each element describes matpower secondary model is determined
Variable and the member function for carrying out data processing；Call write-in function that the topological data of power grid is written to matpower file
In.Member variable needed for matpower secondary model includes: generator, transmission line of electricity, guarantor corresponding to bus and transformer
Protection unit parameter specifically includes overcurrent protection definite value, low-voltage variation definite value, underfrequency protection definite value and impedance protection definite value.
S9: pre- according to transmission line forest fire forecast system, transmission line forest fire monitoring, ice damage on-line monitoring system, icing
Reporting system or external force damage monitoring system form the electric network element fault set under disaster-ridden kind of coupling condition；The electric network element failure
Collection includes: compromised line name, compromised time interval and the corresponding timing node in compromised time interval
Tripping probability；
S10: according to the requirement of matpower file, at member variable needed for determining each failure-description and progress data
The member function of reason.Data required for the disaster-ridden kind of chain calculating of coupling include power grid ontology data and operation of power networks external environment
Two major class of data.Power grid ontology data be data of power grid and secondary data, wherein data of power grid refer to substation,
The parameter of the elements such as bus, transformer, transmission line of electricity, capacitor, reactor, generator and load；Electric grid secondary data refer to
Be protection definite value in said elements (except substation)；Generation, the conversion of two class data are mutually independent of each other.Outside operation of power networks
The parameters such as the degree of electric network element and threat that portion's environmental data, that is, external disaster threatens, for providing input number to grid simulation
According to.
S11: call the write-in function in member function that grid topology data is written in matpower file.
In above-mentioned step, the sequence of step can be adjusted according to need, and S1-S11 does not indicate the limit to sequence of steps
It is fixed.
Embodiment 2:
The present embodiment is the automated conversion system of disaster-ridden kind of 1 corresponding power grid of embodiment coupling cascading failure model, this reality
Apply the automated conversion system of disaster-ridden kind of the power grid coupling cascading failure model of the D5000-matpower of example, comprising:
Data parameters obtain module, for being supported every 5 minutes using ftp mode national grid smart grid dispatching technique
System D5000 obtains the file described with E language (electric power system data markup language), should include: transformer ginseng in this document
Number, transmission line of alternation current, DC power transmission line, load parameter, substation, bus, capacitor, electricity in the topological data of power grid
The parameters such as sensor.
Data parameters obtain module, are also used to the relay of daily automatic-calling scene definite value acquisition transformer and transmission line of electricity
Protective device definite value generates xml document and is transferred to server specified folder to database；
One electrical secondary system conversion module of power grid, for obtaining power grid primary system parameter, steps are as follows:
Parsing E formatted file carries out topological data, line parameter circuit value, transformer parameter and load number that parsing obtains power grid
According to；
Read topological data, line parameter circuit value, transformer parameter and the load parameter of Relay Protection Setting Calculation System power grid；
The transformer in power network topology parameter is converted as transmission line of electricity, wherein volume two become and are converted to a transmission line of electricity, three
Volume, which becomes, is converted to three transmission lines of electricity；
Each transmission line of electricity (including DC power transmission line and transmission line of alternation current) allows to carry in acquisition D5000 system
Flow attribution value, the power-carrying that current-carrying capacity attribute value will be allowed to be set as transmission line of electricity；
According to the call format of matpower simulation document " .m ", writes each element and describe model of matpower
The member function of the member variable and progress data processing that need；
Heterogeneous Information System data match module, read power grid it is primary/secondary data, judge relay protection setting calculation system
Element title, the matching of parameter in element title, parameter and D5000 system in system, it is ensured that power network topology parameter, secondary guarantor
It is completely reliable to protect data；
According to the call format of matpower simulation document " .m ", writes each element and describe matpower secondary model institute
The member function of the member variable and progress data processing that need；
Call the member function matpower_Write in all kinds of that character string is written in .m file.
The electric network element fault set under disaster-ridden kind of coupling condition is obtained, determines and describes each event in the electric network element fault set
Parameter needed for barrier writes each failure-description according to the call format of matpower simulation document " .m " as member variable
The member function of required member variable and progress data processing, obtains disaster-ridden kind of coupling cascading failure model of power grid.
Wherein, the matching process use in D5000 system, Relay Protection Setting Calculation System and definite value calling system is public
The universal method opened.
The present embodiment obtains device parameter on the basis of the E formatted data to D5000 parses, and passes through data conversion
Realize the topological parameter assignment of file in " .m "；Pass through the export of definite value in adaptive setting system and external environment condition parameter
It automatically generates, realizes the automatic conversion of disaster-ridden kind of power grid coupling cascading failure model, mentioned for the analysis of power grid cascading failure risk
For data basis.This method can avoid hard work and the emulation that artificial progress matpower modeling is Parameter Switch and typing
Parameter error is difficult to the drawbacks of investigating on the spot, the accuracy that the efficiency and model for improving model generation generate.
Embodiment 3:
The present invention also provides a kind of computer system, including memory, processor and storage are on a memory and can be
The step of computer program run on processor, processor realizes any of the above-described embodiment when executing computer program.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of automatic switching method of disaster-ridden kind of the power grid of D5000-matpower coupling cascading failure model, feature exist
In, comprising the following steps:
The first data are obtained from D5000 system；The second data are obtained from Relay Protection Setting Calculation System；
Based on the first data, the transformer model of the first data is converted into model of power transmission system；It takes in the first data
The capacity of transformer updates as the limit current-carrying capacity of the transmission line of electricity in the model of power transmission system and arrives first data
In；
Judge whether the element title in the second data matches with element title in the first data, the first number is retained when mismatching
Element title and parameter in；Upon a match, the corresponding parameter of the element title of the second data is taken to replace first data
In corresponding parameter；
From the first data, parameter needed for choosing description model of matpower and secondary model is divided as member variable
A model and secondary model are not established；
The probability for obtaining each failure in the electric network element fault set and set under disaster-ridden kind of coupling condition, determines the power grid
Parameter needed for element fault concentrates each failure of description is as member variable, on the basis of a model and secondary model
On, obtain disaster-ridden kind of coupling cascading failure model of power grid.
2. the automatic conversion of disaster-ridden kind of the power grid of D5000-matpower according to claim 1 coupling cascading failure model
Method, which is characterized in that further include, from Setting Management System of Protective Relaying or fault information management system acquisition transformer and
The relay protection constant value of transmission line of electricity；The relay protection constant value of the transformer and transmission line of electricity is updated to first data
In；
Before whether the element title for judge in the second data matches with element title in the first data and parameter, institute
State method further include: read data of power grid and electric grid secondary data, data of the power grid include first data
With the second data, the electric grid secondary data include the relay protection constant value of transformer and transmission line of electricity；
The relay protection constant value includes the relay protection setting value of each transmission line of electricity, the relay protection setting value packet
It includes: distance protection, current protection, temperature protection and voltage protection.
3. the automatic conversion of disaster-ridden kind of the power grid of D5000-matpower according to claim 1 coupling cascading failure model
Method, which is characterized in that electric network element fault set under the disaster-ridden kind of coupling condition is from one or more system below
Middle acquisition: transmission line forest fire forecast system, transmission line forest fire monitoring, ice damage on-line monitoring system, icing forecast system or
External force damage monitoring system；
The electric network element fault set includes: compromised line name, compromised time interval and when compromised
Between in section corresponding timing node tripping probability.
4. the automatic conversion of disaster-ridden kind of the power grid of D5000-matpower according to claim 1 coupling cascading failure model
Method, which is characterized in that first data include: topological data, transmission line parameter, transformer parameter and the load of power grid
Parameter；Second data include: topological data, transmission line parameter, transformer parameter and the load parameter of power grid；Described
Transmission line parameter in two data further include: line length.
5. the automatic conversion of disaster-ridden kind of the power grid of D5000-matpower according to claim 4 coupling cascading failure model
Method, which is characterized in that described when establishing a model, secondary model and or disaster-ridden kind of coupling cascading failure model of power grid, packet
It includes calling write-in function the topological data of power grid is written in matpower file；
Member variable needed for model of the matpower include: generator parameter, transmission line parameter, bus parameter with
And transformer parameter；
Member variable needed for the matpower secondary model includes: corresponding to generator, transmission line of electricity, bus and transformer
Protective device parameter, it is fixed to specifically include overcurrent protection definite value, low-voltage variation definite value, underfrequency protection definite value and impedance protection
Value.
6. disaster-ridden kind of the power grid of D5000-matpower according to claim 4 or 5 couples the automatic of cascading failure model
Conversion method, which is characterized in that the topological data of the power grid includes: Substation parameters, bus parameter, capacitor parameters, electricity
Anti- device parameter, generator parameter and load parameter；
Wherein, the Substation parameters include: serial number, plant stand name, voltage class and plant stand type；
The bus parameter includes: bus name, voltage class, place topological node, voltage, phase angle, stop transport mark and calculating
Node；
The capacitor parameters include title, voltage class, rated capacity, voltage rating, link position, place topological node,
Active power, reactive power, stop transport mark and calculate node；
The reactor parameter include title, voltage class, rated capacity, voltage rating, link position, place topological node,
Active power, reactive power, stop transport mark and calculate node；
The generator parameter includes: generator name, equivalent generator mark, equivalent position, voltage rating, rated capacity, connects
Enter network voltage grade, place topological node, active power, reactive power, set end voltage, set end voltage phase angle, stop transport mark,
The active power upper limit, active power lower limit, the reactive power upper limit, reactive power lower limit, rated power factor and calculate node.
7. disaster-ridden kind of the power grid of D5000-matpower according to claim 4 or 5 couples the automatic of cascading failure model
Conversion method, which is characterized in that
The transformer parameter includes: transformer name, winding type, high-voltage end voltage class, intermediate voltage terminal voltage class, low-pressure end
Voltage class, high-voltage end rated capacity, intermediate voltage terminal rated capacity, low-pressure end rated capacity, high-voltage end tap highest gear, height
Pressure side tap lowest gear, the specified gear of high-voltage end tap, high-voltage end tap be differential, high-voltage end voltage rating, middle pressure
Hold tap highest gear, intermediate voltage terminal tap lowest gear, the specified gear of intermediate voltage terminal tap, intermediate voltage terminal tap it is differential,
Intermediate voltage terminal voltage rating, low-pressure end voltage rating, high-voltage winding resistance, high-voltage winding reactance, middle pressure winding resistance, middle pressure winding
Topological node, low-pressure end institute where topological node, intermediate voltage terminal where reactance, low pressure winding resistance, low pressure winding reactance, high-voltage end
Mark is cut-off in topological node, high-pressure side, medium voltage side cut-offs mark, low-pressure side cut-offs mark, high-voltage end calculate node, intermediate voltage terminal
Calculate node, low-pressure end calculate node, high-voltage winding reactance per unit value, middle pressure winding resistance per unit value, middle pressure winding reactance mark
Value, low pressure winding resistance per unit value, low pressure winding reactance per unit value；
The transmission line parameter includes transmission line of alternation current parameter, the transmission line of alternation current parameter include: alternating current circuit name,
Where topological node, the end J where voltage class, equivalent road way signs, line resistance, line reactance, line one-end susceptance, the end I
Topological node, the end I cut-off mark, mark is cut-off at the end J, allow current-carrying capacity, the end I electrical island number, the end J electrical island number, line resistance
Per unit value, line reactance per unit value and line one-end susceptance per unit value；
The load parameter include: load name, voltage class, duty value mark, equivalent link position, place topological node,
Active power, reactive power, stop transport mark and calculate node.
8. disaster-ridden kind of coupling cascading failure mould of the power grid of D5000-matpower according to any one of claim 1 to 5
The automatic switching method of type, which is characterized in that the transformer parameter by the first data is converted to transmission line of electricity, comprising: will
Volume two become and are converted to a transmission line of electricity, and or the changes of volume three are converted into three transmission lines of electricity.
9. disaster-ridden kind of coupling cascading failure mould of the power grid of D5000-matpower according to any one of claim 1 to 5
The automatic switching method of type, which is characterized in that
By the period 1 from the E formatted file in D5000 system, comprising the following steps:
Substation data card is read, substation's class set is obtained；
Bus data card is read, bus class set is obtained；
ACline data card is read, alternating current circuit class set is obtained；
DCline data card is read, DC line class set is obtained；
Transformer data card is read, transformer class set is obtained；
Unit data card is read, electric machinery set is obtained；
Compensator_P, Compensator_S data card are read, capacitor class, reactor class set are obtained；
The parsing E formatted file obtains the first data of power grid, including generates the power grid according to the E formatted file
Topological data, comprising the following steps:
Judge title and alternating current circuit, the end the I place topological node attribute of DC line element B or the end J institute of bus bar elements A
It is whether consistent in topological node, if the end I or the end J of consistent then element B connect bus A；
Topology where topological node attribute where judging the title of bus bar elements A and the end I of the transformer element C of volume two or the end J
Whether node is consistent, if the end I or the end J of consistent then element C connect bus A；
Topology where topological node where judging the title of bus bar elements A and the high-voltage end of three-circuit transformer element D or intermediate voltage terminal
Whether topological node where node or low-pressure end is consistent, if the consistent then corresponding high-voltage end of element D or intermediate voltage terminal or low
Press bond bus A；
Whether the title for judging bus bar elements A and the place topological node title of generator element E are consistent, if consistent then element
The leading-out terminal of E connects bus A；
Judge whether title and the place topological node title of capacitor or reactor element F of bus bar elements A are consistent, if one
Cause then element F connection bus A；
For each element number, the topological data of power grid is formed.
10. a kind of computer system, can run on a memory and on a processor including memory, processor and storage
Computer program, which is characterized in that the processor is realized in the claims 1 to 9 when executing the computer program appoints
The step of one the method.
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| CN115115220A (en) * | 2022-06-27 | 2022-09-27 | 山东大学 | New energy cascading failure risk assessment method and system for direct current sending end system |
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