CN107977507A - A kind of electric power system fault characteristic quantity modeling method based on fault recorder data - Google Patents

A kind of electric power system fault characteristic quantity modeling method based on fault recorder data Download PDF

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Publication number
CN107977507A
CN107977507A CN201711218852.8A CN201711218852A CN107977507A CN 107977507 A CN107977507 A CN 107977507A CN 201711218852 A CN201711218852 A CN 201711218852A CN 107977507 A CN107977507 A CN 107977507A
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China
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fault
phase
failure
data
value
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Inventor
王孝彬
尹波
符云
郑秋元
车仁飞
范作程
张穆乾
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Hainan Power Grid Co Ltd
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Shandong Mountain Power Technology Ltd By Share Ltd
HAINAN STATE GRID Co Ltd
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Priority to CN201711218852.8A priority Critical patent/CN107977507A/en
Publication of CN107977507A publication Critical patent/CN107977507A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H6/00—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00—Details relating to CAD techniques
    • G06F2111/10—Numerical modelling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation

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  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
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  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The present invention provides a kind of electric power system fault characteristic quantity modeling method based on fault recorder data, based on fault recorder data, electric system primary equipment model is established, primary equipment model and the recording passage in failure wave-recording file are associated, obtain analysis model；Fault recorder data before and after extraction fault moment in a period of time, calculates the fault characteristic value of each primary equipment element；By analysis model and fault characteristic value deposit database, used for fault diagnosis and crash analysis.Wave-recording sampling information has been carried out digitlization and quantification treatment with the characteristic quantity of different dimensions, has obtained the fault characteristic value of multiple dimensions, can ensure the realization of various advanced applications by the present invention from multiple angle analysis recorder datas；Non-structured recorder data is converted into the fault characteristic value model of structuring, improves the operational reliability and rapidity of other advanced applications.

Description

A kind of electric power system fault characteristic quantity modeling method based on fault recorder data
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of electric power system fault based on fault recorder data Characteristic quantity modeling method.
Background technology
After electric system is broken down, electric power system dispatching analysis personnel are badly in need of analyzing failure cause, release failure, recover Power transmission.The intelligent Fault Diagnose Systems being currently known, generally bias toward the judgement of fault element, and the positioning of abort situation. And for accident it is profound the reason for analyze, and the assessment of a secondary device health status is examined without effective means Disconnected and analysis.Fault recorder data have recorded the high-speed sample data of primary and secondary system when electric system is broken down, Therefore accident analysis and diagnosis can be carried out accordingly.But in practical application, the signal access amount of fault wave recording device is restricted , general each substation can be equipped with more fault wave recording devices.Actual electric network operation information is thus caused to be disperseed It has been recorded in different recorder data files.And fault recorder data is high-speed sampling, to the recording of different device generation Data carry out comprehensive analysis and very high requirement are just proposed to clock accuracy, and obstacle is caused to the analysis for carrying out profound.
In conclusion comprehensive analysis is carried out just to clock essence for the recorder data produced to different device in the prior art Degree proposes very high requirement, to carrying out the problem of profound analysis causes obstacle, still lacks effective solution.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of electric system based on fault recorder data Fault characteristic value modeling method, occurs the moment as separation using failure, in units of electric system primary equipment element, carries respectively The various fault characteristic values of specified time window before and after failure are taken, form intermediate data, data support is provided for other advanced applications, So as to overcome the limitation of failure wave-recording file in itself.
The technical solution adopted in the present invention is：
A kind of electric power system fault characteristic quantity modeling method based on fault recorder data, comprises the following steps：
Based on fault recorder data, electric system primary equipment model is established, by primary equipment model and failure wave-recording text Recording passage in part is associated, and obtains analysis model；
Fault recorder data before and after extraction fault moment in a period of time, calculates the fault signature of each primary equipment element Amount；
By analysis model and fault characteristic value deposit database, used for fault diagnosis and crash analysis.
Further, it is described to be based on fault recorder data, electric system primary equipment model is established, by primary equipment model It is associated with the recording passage in failure wave-recording file, obtains analysis model, including：
Based on fault recorder data in each failure wave-recording file, electric system primary equipment model is established；
Increase corresponding multiple analog quantity channels number and multiple switch in each failure wave-recording file in primary equipment model The channel number of passage is measured, forms analysis model.
Further, the analysis model includes bus model, model of power transmission system, transformer model, breaker Model and protective device model；
Wherein, the bus model includes busbar title, busbar numbering, voltage class, relevant protective device numbering, phase Voltage channel number in the breaker apparatus numbering and corresponding recorder data of pass；
The model of power transmission system include line name, circuit number, voltage class, line impedance parameter, line length, Current channel number in relevant protective device numbering, relevant breaker apparatus numbering, corresponding recorder data；
The transformer model include transformer name, transformer numbering, two or three side transformer volume, it is relevant protection dress Put numbering；
The breaker model includes switching value channel number and the affiliated signal type of switching value in corresponding failure wave-recording file；
The protective device model includes switching value channel number and the affiliated class signal of switching value in corresponding failure wave-recording file Type.
Further, after obtaining analysis model, when failure occurs, current break is obtained by traveling through Wave data Point, the waveform that multiple faults recorder data is carried out according to current break point align.
Further, the fault characteristic value includes effective value, 1-20 subharmonic values, direct current point before and after failure Amount and time attenuation constant, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection are dynamic Make characteristic quantity, breaker actuation characteristic quantity and Wave data；Primary equipment element includes busbar, transmission line of electricity, transformer and breaks Road device.
Further, the fault recorder data before and after extraction fault moment in a period of time, calculates each primary equipment element Effective value, 1-20 subharmonic values, DC component and time attenuation constant, order components, poor flow valuve, circuit before and after failure Impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act characteristic quantity and breaker actuation characteristic quantity are measured, including：
From each failure wave-recording file extract fault moment before and after a period of time fault recorder data；
To in a period of time after failure before failure, a point is taken at interval of 5ms, according to the fault recorder data of the point, Calculating each primary equipment before and after the point failure corresponding effective value, 1-20 subharmonic values, DC component and time declines Subtract constant, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act characteristic quantity and Breaker actuation characteristic quantity；
In time range, a point is taken at interval of 5ms, according to the fault recorder of the point to after overlapping in Reclosing Instant According to calculating each primary equipment before and after the point failure corresponding effective value, 1-20 subharmonic values, DC component and time Attenuation constant, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act characteristic quantity With breaker actuation characteristic quantity.
Further, the fault recorder data before and after extraction fault moment in a period of time, calculates each primary equipment element Wave data before and after failure, including：
The corresponding three-phase of Wave data, circuit of the corresponding three-phase voltage of busbar is extracted from each failure wave-recording file respectively Each side of the Wave data of voltage and three-phase current, transformer and the Wave data of the corresponding three-phase voltage of neutral point and three-phase current And the Wave data of the corresponding three-phase current of breaker；
The Wave data extracted is subjected to unified normalized, and calculates 3 cycles before each primary equipment element fault 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing after Wave data, failure；
According to 10 weeks after 3 weeks waveform datas, failures before each primary equipment element fault of COMTRADE stored in file format 10 weeks waveform datas are once worth after waveform data and reclosing.
A kind of electric power system fault characteristic quantity model building device based on fault recorder data, suitable for above-mentioned based on failure The electric power system fault characteristic quantity modeling method of recorder data, including：
Primary equipment model building module, for based on fault recorder data, establishing electric system primary equipment model；
Analysis model building module, for the recording passage in primary equipment model and failure wave-recording file to be carried out Association, obtains analysis model；
Data extraction module, the failure wave-recording for a period of time before and after the extraction fault moment from each failure wave-recording file Data；
Fault characteristic value computing module, for according to the fault recorder in a period of time before and after the fault moment extracted According to calculating the fault characteristic value of each primary equipment element；
Memory module, for storing analysis model and fault characteristic value, uses for fault diagnosis and crash analysis.
Further, further include：
Waveform alignment module, for when failure occurs, finding the catastrophe point by traveling through Wave data, carrying out multiple faults The waveform alignment of recorder data.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention is modeled electric system primary equipment, by primary equipment on the basis of fault recorder data Model is associated with the recording passage in fault recorder data file, obtains analysis model, can when failure occurs According to voltage, the catastrophe characteristics of electric current, the waveform alignment of more recorder datas is carried out；
(2) present invention extracts the fault recorder of a period of time before and after fault moment from each failure wave-recording file respectively According to, in units of primary equipment element, the calculating of the fault characteristic value of each primary equipment element is carried out, forms intermediate data, gram Taken the limitation of failure wave-recording file in itself, be single end distance measurement, both-end distance measuring, waveform confluence, protection act behavioural analysis evaluation, The advanced applications such as secondary device characteristic when analysis failure occurs provide more accurately and reliably data source, can be preferably Meet the needs of various analyses；
(3) present invention carries out wave-recording sampling information with the characteristic quantity of different dimensions from multiple angle analysis recorder datas Digitlization and quantification treatment, have obtained the fault characteristic value of multiple dimensions, can ensure the realization of various advanced applications；Will be non- The recorder data of structuring is converted into the fault characteristic value of structuring, improves single end distance measurement, both-end distance measuring, waveform confluence, guarantor Protect analysis of operative action evaluation, the operational reliability of advanced application such as secondary device characteristic when analysis failure occurs and quick Property.
Brief description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its explanation are used to explain the application, do not form the improper restriction to the application.
Fig. 1 is the electric power system fault characteristic quantity modeling method stream disclosed by the embodiments of the present invention based on fault recorder data Journey figure one；
Fig. 2 is the electric power system fault characteristic quantity modeling method stream disclosed by the embodiments of the present invention based on fault recorder data Journey figure two；
Fig. 3 is the electric power system fault characteristic quantity model building device frame disclosed by the embodiments of the present invention based on fault recorder data Figure.
Embodiment
It is noted that described further below is all illustrative, it is intended to provides further instruction to the application.It is unless another Indicate, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " bag Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, it is high-speed sampling that fault recorder data, which exists in the prior art, to different dresses The recorder data progress comprehensive analysis for putting generation just proposes clock accuracy very high requirement, and the analysis for carrying out profound is made Into the deficiency of obstacle, in order to solve technical problem as above, present applicant proposes a kind of electric power based on fault recorder data System failure characteristic quantity modeling method, occurs the moment as separation using failure, in units of electric system primary equipment element, point The various fault characteristic values of specified time window before and after failure are indescribably taken, intermediate data is formed, data is provided for other advanced applications Support, so as to overcome the limitation of failure wave-recording file in itself.
In a kind of typical embodiment of the application, as shown in Figure 1, there is provided a kind of electricity based on fault recorder data Force system fault characteristic value modeling method, this method comprise the following steps：
Step 101：Based on fault recorder data, electric system primary equipment model is established, by primary equipment model and event Recording passage in barrier recorded wave file is associated, and obtains analysis model；
Step 102：Fault recorder data before and after extraction fault moment in a period of time, calculates each primary equipment element Fault characteristic value；
Step 103：By analysis model and fault characteristic value deposit database, make for fault diagnosis and crash analysis With.
The electric power system fault characteristic quantity modeling method based on fault recorder data that the present embodiment proposes, fault recorder According to as high-speed sample data, can farthest faults when Operation of Electric Systems feature, in fault recorder data On the basis of, electric system primary equipment is modeled, and is associated with the recording passage in failure wave-recording file corresponding； When failure occurs, according to voltage, the catastrophe characteristics of electric current, the waveform alignment of more recorder datas is carried out；Moment is occurred with failure For separation, in units of electric system primary equipment element, the various failures spy of specified time window before and after failure is calculated respectively Sign amount, forms intermediate data, provides data for fault diagnosis and crash analysis application and supports, so as to break failure wave-recording file sheet The limitation of body.
In order to make those skilled in the art be better understood by the present invention, a more detailed embodiment is set forth below. As shown in Fig. 2, this implementation provides a kind of electric power system fault characteristic quantity modeling method based on fault recorder data, including：
Step 201：Based on fault recorder data, electric system primary equipment model is established, by primary equipment model and event Recording passage in barrier recorded wave file is associated, and obtains analysis model.
Step 2011：Based on fault recorder data, electric system primary equipment model is established.
Fault recorder data is gathered by fault wave recording device, failure wave-recording file format is deposited according to this by fault recorder Storage, based on fault recorder data in each fault recorder data file, establishes electric system primary equipment model, the primary equipment mould Block mainly includes busbar information, transmission line information, transformer information, breaker information and protective device information.
Step 2012：Primary equipment model and the recording passage in failure wave-recording file are associated, obtain recording point Analyse model.
By taking transmission line information as an example, 4 analog quantity channels in a circuit relevant fault recorded wave file and some open Measure passage in pass.4 analog quantity channels are respectively A phase currents passage, B phase currents passage, C phase currents passage and the zero sequence electricity of circuit Circulation road.Some switching value passages are mainly protection signal, reclosing signal and the circuit breaker position letter for protecting the circuit Number.
The analysis model includes bus model, model of power transmission system, transformer model, protective device model and open circuit Device model；
Wherein, the bus model includes busbar title, busbar numbering, voltage class, relevant protective device numbering, phase The breaker apparatus of pass is numbered, the voltage channel number in corresponding recorder data.
The model of power transmission system include line name, circuit number, voltage class, line impedance parameter, line length, Current channel number in relevant protective device numbering, relevant breaker apparatus numbering, corresponding recorder data.
The transformer model include transformer name, transformer numbering, two or three side transformer volume, it is relevant protection dress Put numbering.Wherein affiliated transformer volume includes the mode of connection, relevant protective device is numbered and relevant breaker apparatus is numbered, Voltage channel number and current channel number in corresponding recorder data.
The breaker model includes switching value channel number and the affiliated signal type of switching value in corresponding failure wave-recording file；
The protective device model includes switching value channel number and the affiliated class signal of switching value in corresponding failure wave-recording file Type.
There are correlation in electric system between busbar, transmission line of electricity, transformer, breaker, protective device.It is female Line, circuit, transformer and breaker are electric system primary equipments, and protective device is secondary equipment in power system；Protective device By monitoring the information such as the voltage on primary equipment, electric current, when perceiving electric system exception, by controlling breaker, into And busbar, circuit, the load on transformer are cut off, achieve the purpose that to protect busbar, circuit, transformer, finally also ensure that Electric system it is safe and stable.Therefore, the correlation in this five kinds of equipment real worlds is abstracted, has just obtained event Correlation between five kinds of models in barrier analysis, correlation is specially between five kinds of models：
Relation between busbar, breaker and protective device model is：Busbar is final shielded object, protective device It is the object for implementing protection, breaker is the bridge for realizing this protection.Therefore, increase a breaker in busbar information to compile Number, multiple protection device numberings, have just accomplished the association between three.
Relation between transmission line of electricity, breaker and protective device model is：Circuit is final shielded object, is protected Device is the object for implementing protection, and breaker is the bridge for realizing this protection.Therefore, increase by 1 to 2 in line information to break Road device numbering, multiple protection device numberings, have just accomplished the association between three.
Relation between transformer, breaker and protective device model：Transformer is final shielded object, and protection fills It is the object for implementing protection to put, and breaker is the bridge for realizing this protection.Therefore, increase by 1 to 3 in transformer information to break Road device numbering, multiple protection device numberings, have just accomplished the association between three.
Primary equipment model and the recording passage in failure wave-recording file are associated, obtain each analysis model Concrete methods of realizing is：
Protective device can send trip protection signal and overlap to breaker and believe when being protected to primary equipment Number.Reaction is exactly in the passage of recorded wave file, protection three in recorded wave file switching value passage jump signal, A phases trip signal, B phases trip signal, C phases trip signal and reclosing signal.Therefore, a set of protective device and the multiple switch amount in recorded wave file There are relation for passage.It is implemented as in protective device model, increases corresponding multiple switch amount in failure wave-recording file and lead to The channel number in road.
Collection in electric system to breaker information includes two kinds of circuit breaker current and circuit breaker position.Circuit breaker current Reaction is exactly tetra- analog quantity channels of ABCN in recorded wave file.The position of breaker reflects busbar, circuit, transformer and electricity The connection status of Force system other parts, it is exactly multiple switch amount passage to be reflected in recorded wave file, such as A phases closing position, B phases Closing position, C phases closing position, A phases open position, B phases open position and C phase open positions.It is implemented as in breaker In model, increase the channel number of corresponding multiple analog quantity channels number and multiple switch amount passage in failure wave-recording file.
Transformer is generally divided into two-winding transformer and three-winding transformer, contains voltage, current information per side winding.Instead It is exactly multiple analog quantity channels to reflect in recorded wave file, by taking high-pressure side as an example, high-pressure side A phase voltages in corresponding recorded wave file, High-pressure side B phase voltages, high-pressure side C phase voltages, high-pressure side residual voltage, high-pressure side A phase currents, high-pressure side B phase currents, high-pressure side C phase currents and high-pressure side zero-sequence current.Medium voltage side is similar with low-pressure side situation.It is implemented as increasing by three in transformation side form type Side winding, increases corresponding multiple analog quantity channels number in failure wave-recording file per side in group information.
Collection to transmission line information in electric system is exactly the ABC three-phase currents and zero-sequence current of circuit.Specifically It is embodied as increasing corresponding multiple analog quantity channels number in recorded wave file in circuit model information.
Collection to busbar information in electric system is exactly the ABC three-phase voltages and residual voltage of busbar.Specific implementation To increase corresponding multiple analog quantity channels number in failure wave-recording file in bus model information.
In addition, when failure occurs, electric current can undergo mutation, by traveling through Wave data with regard to the catastrophe point can be found, though Right multiple failure wave-recording document times will not be highly consistent, but due to being all a same fault recorder data for collection, reflection It is same objective reality, therefore, the catastrophe point in each failure wave-recording file is actual synchronization, according to this Characteristic can carry out the waveform alignment of more recorder datas.
Step 202：Fault recorder data before and after extraction fault moment in a period of time, using primary equipment element to be single Position, calculates the fault characteristic value of each primary equipment element, wherein, fault characteristic value include effective value before and after failure, Harmonic value, DC component and time attenuation constant, order components, difference, route survey impedance, frequecy characteristic amount, event before and after failure Hinder ranging characteristic quantity, protection act characteristic quantity, breaker actuation characteristic quantity and Wave data；Primary equipment element include busbar, Transmission line of electricity, transformer and breaker.
Step 2021：From each fault recorder data file extract fault moment before and after a period of time fault recorder According to.
Event from each fault recorder data file before extraction failure after 3 cycles, failure after 9 cycles, reclosing in 9 cycles Hinder recorder data.
Step 2022：In units of primary equipment element, voltage and current is effective before and after calculating each primary equipment element fault Value, harmonic value, DC component and time attenuation constant before and after failure, order components, difference, route survey impedance, frequecy characteristic amount, Fault localization characteristic quantity, protection act characteristic quantity, breaker actuation characteristic quantity and Wave data.
Step 2022-1：The effective value characteristic quantity of each primary equipment element before and after calculating failure.
(1) voltage effective value before and after calculating bus-bar fault
Calculate before bus-bar fault after 3 cycles, failure after 9 cycles, reclosing the virtual value of the ABC three-phase voltages of 9 cycles and Phase value, i.e., take a point after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before bus-bar fault at interval of 5ms, calculates The virtual value and phase value of the three-phase voltage of the point.The effective Value Data for such as calculating first point is at 60ms before bus-bar fault three The virtual value and phase value of phase voltage, then effective Value Data of second point be failure before 55ms locate three-phase voltage virtual value with Phase value, and so on, after obtain failure at 180ms three-phase voltage virtual value and phase value；Again from busbar reclosing Moment starts to calculate the virtual value and phase value of a three-phase voltage at interval of 5ms, after obtain busbar reclosing at 180ms Three-phase voltage virtual value and phase value, calculate altogether before bus-bar fault after 3 cycles, failure after 9 cycles, reclosing in 9 cycles The virtual value and phase Value Data of the three-phase voltage of 86 points.
(2) voltage effective value before and after computing electric power line failure
Before computing electric power line failure after 3 cycles, failure after 9 cycles, reclosing the ABC three-phase voltages of 9 cycles it is effective Value and phase value, i.e., take one after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before transmission line malfunction at interval of 5ms It is a, calculate the virtual value and phase value of the three-phase voltage of the point.Effective Value Data such as first point is transmission line malfunction The virtual value and phase value of three-phase voltage at preceding 60ms, then effective Value Data of second point is before transmission line malfunction at 55ms The virtual value and phase value of three-phase voltage, and so on, after obtain transmission line malfunction at 180ms three-phase voltage it is effective Value and phase value；Calculate the virtual value and phase of a three-phase voltage at interval of 5ms since transmission line of electricity Reclosing Instant again Value, the virtual value and phase value for the three-phase voltage that 180ms locates after obtain transmission line of electricity reclosing, computing electric power line is former altogether Before barrier after 3 cycles, failure after 9 cycles, reclosing in 9 cycles 86 points three-phase virtual value and phase Value Data.
(3) current effective value before and after computing electric power line failure
Before computing electric power line failure after 3 cycles, failure after 9 cycles, reclosing the ABC three-phase currents of 9 cycles it is effective Value and phase value, i.e., take one after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before transmission line malfunction at interval of 5ms It is a, calculate the virtual value and phase value of the three-phase circuit of the point.Effective Value Data such as first point is transmission line malfunction The virtual value and phase value of three-phase current at preceding 60ms, effective Value Data of second point is at 55ms before transmission line malfunction three The virtual value and phase value of phase current, and so on, after obtain transmission line malfunction at 180ms three-phase current virtual value And phase value；Then, the virtual value and phase of a three-phase current then since transmission line of electricity Reclosing Instant are calculated at interval of 5ms Place value, the virtual value and phase value of the three-phase current after obtain transmission line of electricity reclosing at 180ms, altogether computing electric power line The virtual value of the three-phase current of 86 points and phase Value Data in 9 cycles after 9 cycles, reclosing after 3 cycles, failure before failure.
(4) each side voltage/current virtual value before and after calculating transformer failure
9 cycles after 9 cycles, reclosing after 3 cycles, failure before calculating transformer failure, high voltage side of transformer, medium voltage side, Three-phase voltage, three-phase current virtual value and the phase value of low-pressure side, i.e., 9 cycles after 3 cycles, failure, again before transformer fault After combined floodgate in 9 cycles, a point is taken at interval of 5ms, calculates each side three-phase of high voltage side of transformer, medium voltage side, low-pressure side of the point The virtual value and phase value of voltage, three-phase current.Effective Value Data such as first point is transformer high-voltage at 60ms before failure Side, medium voltage side, the three-phase voltage of low-pressure side, the virtual value and phase value of three-phase current, then effective Value Data of second point be Virtual value and phase value before failure at 55ms, and so on, until the high voltage side of transformer after failure at 180ms, medium voltage side, The three-phase voltage of low-pressure side, the virtual value of three-phase current and phase value；Counted again since transformer Reclosing Instant at interval of 5ms A high voltage side of transformer, medium voltage side, the three-phase voltage of low-pressure side, the virtual value and phase value of three-phase current are calculated, until transformation Think highly of high voltage side of transformer, medium voltage side, the three-phase voltage of low-pressure side, the virtual value of three-phase current and phase at 180ms after closing a floodgate Place value, calculate altogether before transformer fault after 3 cycles, failure after 9 cycles, reclosing the high voltage side of transformer of 86 points in 9 cycles, Medium voltage side, the three-phase voltage of low-pressure side, the virtual value of three-phase current and phase Value Data.
(5) neutral point current virtual value before and after calculating transformer failure
9 cycles after 9 cycles, reclosing after 3 cycles, failure before calculating transformer failure, each side neutral point voltage of transformer, The virtual value and phase value of neutral point current, i.e., before transformer fault after 3 cycles, failure after 9 cycles, reclosing in 9 cycles, A point is taken at interval of 5ms, calculates each side neutral point voltage of transformer, the virtual value and phase value of neutral point current of the point. Effective Value Data such as first point be each side neutral point voltage of transformer at 60ms before failure, neutral point current virtual value and Phase value, then second point data is each side neutral point voltage of transformer at 55ms before failure, the virtual value of neutral point current And phase value, and so on, each side neutral point voltage of transformer, neutral point current after obtain failure at 180ms have Valid value and phase value；Again since transformer Reclosing Instant at interval of 5ms calculate each side neutral point voltage of a transformer, in The property virtual value of point electric current and the virtual value and phase value of phase value, the transformation after obtain transformer reclosing at 180ms Each side neutral point voltage of device, the virtual value and phase value of neutral point current, altogether before calculation transformer fault 9 weeks after 3 cycles, failure Each side neutral point voltage of the transformer of 86 points, the virtual value and phase value of neutral point current in 9 cycles after ripple, reclosing.
(6) current effective value before and after calculating circuit breaker failure
Calculate before circuit breaker failure the virtual value of the ABC three-phase currents of 9 cycles after 9 cycles, reclosing after 3 cycles, failure And phase, i.e., a point is taken at interval of 5ms after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before circuit breaker failure, is counted Calculate the virtual value and phase of the three-phase current of the point.Such as effective Value Data of first point for three-phase current at 60ms before failure Virtual value and phase value, effective Value Data of second point are the virtual value and phase value of three-phase current at 55ms before failure, according to It is secondary to analogize, after obtain failure at 180ms three-phase current virtual value and phase value；Again since breaker Reclosing Instant The virtual value and phase value of a three-phase current are calculated at interval of 5ms, the three-phase after obtain breaker reclosing at 180ms The virtual value and phase value of electric current, are calculated before circuit breaker failure after 3 cycles, failure after 9 cycles, reclosing 86 in 9 cycles altogether The virtual value and phase data of the three-phase current of point.
Step 2022-2：The 1-20 subharmonic virtual values of each primary equipment element before and after calculating failure.
(1) harmonic value before and after calculating bus-bar fault
Calculate before bus-bar fault after 3 cycles, failure after 9 cycles, reclosing 2 subharmonic value of ABC three-phase voltages of 9 cycles and Phase value, i.e., take a point after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before bus-bar fault at interval of 5ms, calculates 2 subharmonic values and phase value of the three-phase voltage of the point.Harmonic wave Value Data such as first point is at 60ms before bus-bar fault three 2 subharmonic values and phase value of phase voltage, then the harmonic wave Value Data of second point be before failure at 55ms 2 times of three-phase voltage it is humorous Wave number and phase value, and so on, after obtain bus-bar fault at 180ms three-phase voltage 2 subharmonic values and phase value；Again 2 subharmonic values and phase value of a three-phase voltage are calculated at interval of 5ms since busbar Reclosing Instant, until obtaining busbar 2 subharmonic values and phase value of three-phase voltage after reclosing at 180ms, altogether before calculation bus-bar fault 9 weeks after 3 cycles, failure After ripple, reclosing in 9 cycles the three-phase voltage of 86 points 2 subharmonic values and phase value.
Similarly, the ABC three-phase voltages 3 of 9 cycles after 9 cycles, reclosing after 3 cycles, failure are calculated before bus-bar fault successively To 20 subharmonic values and phase value.
(2) harmonic value before and after computing electric power line failure
Before computing electric power line failure after 3 cycles, failure after 9 cycles, reclosing 9 cycles 2 subharmonic of ABC three-phase currents Value and phase value, i.e., take one after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before transmission line malfunction at interval of 5ms It is a, calculate 2 subharmonic values and phase value of the three-phase voltage of the point.Harmonic wave Value Data such as first point is transmission line of electricity event Before barrier at 60ms three-phase current 2 subharmonic values and phase value, before the harmonic wave Value Data of second point is transmission line malfunction 2 subharmonic values and phase value of three-phase current at 55ms, and so on, the three-phase at 180ms after obtain transmission line malfunction 2 subharmonic values and phase value of electric current；Again a three-phase current 2 is calculated at interval of 5ms since transmission line of electricity Reclosing Instant Subharmonic value and phase value, until 2 subharmonic values and phase value after reclosing at 180ms.Altogether the virtual value of 86 points and Phase data.
Similarly, successively before computing electric power line failure after 3 cycles, failure after 9 cycles, reclosing 9 cycles ABC three-phase electricities Flow 3 to 20 subharmonic values and phase value.
(3) harmonic value before and after calculating transformer failure
The high voltage side of transformer of 9 cycles after 9 cycles, reclosing after 3 cycles, failure before calculating transformer failure, medium voltage side, 2 subharmonic values and phase value of each side ABC three-phase currents of low-pressure side, i.e., 9 cycles after 3 cycles, failure, again before transformer fault After combined floodgate in 9 cycles, a point is taken at interval of 5ms, calculates 2 subharmonic values and phase of each side three-phase current of transformer of the point Value.Harmonic wave Value Data such as first point is 2 subharmonic values and phase value of each side three-phase current of transformer at 60ms before failure, Then the harmonic wave Value Data of second point is 2 subharmonic values and phase value of each side three-phase current of transformer at 55ms before failure, according to It is secondary to analogize, after obtain failure at 180ms each side three-phase current of transformer 2 subharmonic values and phase value；Again from transformer Reclosing Instant starts to calculate 2 subharmonic values and phase value of each side three-phase current of a transformer at interval of 5ms, until obtaining 2 subharmonic values and phase value of each side three-phase current of transformer after transformer reclosing at 180ms, calculate transformer fault altogether After preceding 3 cycle, failure after 9 cycles, reclosing in 9 cycles each side three-phase current of the transformer of 86 points 2 subharmonic values and phase Place value data.
Similarly, successively before calculating transformer failure after 3 cycles, failure after 9 cycles, reclosing 9 cycles each side of transformer 3 to 20 subharmonic values and phase Value Data of three-phase current.
(4) harmonic value before and after calculating transformer neutral point current failure
The high-pressure side of 9 cycles, medium voltage side, low-pressure side after 9 cycles, reclosing after 3 cycles, failure before calculating transformer failure Each 2 subharmonic value of side neutral point three-phase current and phase, i.e., before transformer fault after 3 cycles, failure 9 after 9 cycles, reclosing In cycle, a point is taken at interval of 5ms, calculates 2 subharmonic values and phase of each side neutral point three-phase current of transformer of the point Value.Harmonic wave Value Data such as first point be before transformer fault at 60ms 2 times of each side neutral point three-phase current of transformer it is humorous Wave number and phase value, then the harmonic wave Value Data of second point is each side neutral point three-phase electricity of transformer at 55ms before transformer fault 2 subharmonic values and phase value of stream, and so on, each side neutral point three of transformer at 180ms after obtain transformer fault 2 subharmonic values and phase value of phase current；Again each side of transformer is calculated at interval of 5ms since transformer Reclosing Instant 2 subharmonic values and phase value of neutral point three-phase current, until in each side of transformer after obtaining transformer reclosing at 180ms Property point three-phase current 2 subharmonic values and phase value, calculate altogether before transformer fault after 3 cycles, failure 9 after 9 cycles, reclosing 2 subharmonic values and phase Value Data of each side neutral point three-phase current of the transformer of 86 points in cycle.
Similarly, successively before calculating transformer failure after 3 cycles, failure after 9 cycles, reclosing 9 cycles each side of transformer 3 to 20 subharmonic values and phase Value Data of neutral point three-phase current.
(5) harmonic value before and after calculating circuit breaker failure
Calculate before circuit breaker failure 2 subharmonic of the ABC three-phase currents of 9 cycles after 9 cycles, reclosing after 3 cycles, failure Value and phase value, i.e., take one after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before circuit breaker failure at interval of 5ms Point, calculates 2 subharmonic values and phase value of the three-phase current of the point.If the harmonic wave Value Data of first point is before circuit breaker failure 2 subharmonic values and phase value of three-phase current at 60ms, then the harmonic wave Value Data of second point is before circuit breaker failure at 55ms 2 subharmonic values and phase value of three-phase current, and so on, after obtain circuit breaker failure 2 times of three-phase current at 180ms Harmonic value and phase value；Again since breaker Reclosing Instant at interval of 5ms calculate a three-phase current 2 subharmonic values and Phase value, until 2 subharmonic values and phase value of the three-phase current after breaker reclosing at 180ms；Breaker event is calculated altogether Before barrier after 3 cycles, failure after 9 cycles, reclosing in 9 cycles the three-phase current of 86 points 2 subharmonic values and phase value.
Similarly, the ABC three-phase currents of 9 cycles after 9 cycles, reclosing after 3 cycles, failure are calculated before circuit breaker failure successively 3 to 20 subharmonic values and phase Value Data.
Step 2022-3：The DC component and time attenuation constant of each primary equipment element before and after calculating failure.
(1) computing electric power line DC component and time attenuation constant
Before computing electric power line failure after 3 cycles, failure after 9 cycles, reclosing the ABC three-phase currents of 9 cycles direct current Component and time attenuation constant, i.e., before line fault after 3 cycles, failure after 9 cycles, reclosing in 9 cycles, at interval of 5ms A point is taken, calculates the DC component and time attenuation constant of the three-phase current of the point.Such as the DC component data of first point For the DC component number of the DC component and time attenuation constant, then second point of three-phase current at 60ms before transmission line malfunction According to the DC component and time attenuation constant for three-phase current at 55ms before transmission line malfunction, and so on, it is defeated until obtaining The DC component of three-phase current and time attenuation constant at 180ms after line fault；Opened again from transmission line of electricity Reclosing Instant The DC component and time attenuation constant to begin at interval of 5ms one three-phase current of calculating, after obtaining transmission line of electricity reclosing The DC component and time attenuation constant of three-phase current at 180ms, altogether before calculation transmission line malfunction 9 weeks after 3 cycles, failure The DC component of the three-phase current of 86 points and time attenuation constant data in 9 cycles after ripple, reclosing.
(2) breaker DC component and time attenuation constant are calculated
The direct current of the ABC three-phase currents of 9 cycles divides after 9 cycles, reclosing after 3 cycles, failure before calculating circuit breaker failure Amount and time attenuation constant, i.e., 9 cycles after 9 cycles, reclosing after 3 cycles, failure, take at interval of 5ms before circuit breaker failure One point, calculates the DC component and time attenuation constant of the three-phase current of the point.As the DC component data of first point are The DC component of three-phase current and time attenuation constant at 60ms before circuit breaker failure, then the DC component data of second point be The DC component of three-phase current and time attenuation constant at 55ms before circuit breaker failure, and so on, until obtaining breaker therefore The DC component of three-phase current and time attenuation constant at 180ms after barrier；Again at interval of 5ms since breaker Reclosing Instant The DC component and time attenuation constant of a three-phase current are calculated, the three-phase after obtain breaker reclosing at 180ms The DC component and time attenuation constant of electric current, are calculated before circuit breaker failure after 3 cycles, failure 9 weeks after 9 cycles, reclosing altogether The DC component of the three-phase current of 86 points and time attenuation constant in ripple.
Step 2022-4：In units of primary equipment element, order components before and after failure are calculated.
(1) voltage sequence components before and after calculating bus-bar fault
Calculate before bus-bar fault positive sequence phase, the negative phase-sequence phase of the voltage of 9 cycles after 9 cycles, reclosing after 3 cycles, failure Position and zero sequence phase, i.e., take one after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before bus-bar fault at interval of 5ms Point, calculates the positive sequence phase, negative phase-sequence phase and zero sequence phase of the voltage of the point.Order components data such as first point are busbar event The positive sequence phase of voltage, negative phase-sequence phase and zero sequence phase at 60ms before barrier, then before the order components data of second point are failure The positive sequence phase of voltage, negative phase-sequence phase and zero sequence phase at 55ms, and so on, the electricity at 180ms after obtain bus-bar fault Positive sequence phase, negative phase-sequence phase and the zero sequence phase of pressure, then at interval of 5ms one voltage of calculating since busbar Reclosing Instant Positive sequence phase, negative phase-sequence phase, zero sequence phase, positive sequence phase, the negative phase-sequence phase of the voltage after obtain busbar reclosing at 180ms Position, zero sequence phase, are calculating before bus-bar fault after 3 cycles, failure after 9 cycles, reclosing in 9 cycles the voltage of 86 points just altogether Sequence phase, negative phase-sequence phase and zero sequence phase data.
(2) voltage sequence components before and after computing electric power line failure
It is the positive sequence phase of the voltage of 9 cycles after 9 cycles, reclosing after 3 cycles, failure before computing electric power line failure, negative Sequence phase and zero sequence phase, i.e., before transmission line malfunction after 3 cycles, failure after 9 cycles, reclosing in 9 cycles, at interval of 5ms takes a point, calculates the positive sequence phase, negative phase-sequence phase and zero sequence phase of the voltage of the point.Such as the voltage sequence minute of first point Measure positive sequence phase, negative phase-sequence phase and zero sequence phase of the data for voltage at 60ms before transmission line malfunction, the voltage of second point Order components data are positive sequence phase, negative phase-sequence phase and the zero sequence phase of voltage at 55ms before transmission line malfunction, and so on, directly To obtaining positive sequence phase, negative phase-sequence phase and the zero sequence phase of voltage at 180ms after transmission line malfunction；Overlapped again from transmission line of electricity The lock moment starts to calculate positive sequence phase, negative phase-sequence phase and the zero sequence phase of a voltage at interval of 5ms, until obtaining transmission line of electricity Positive sequence phase, negative phase-sequence phase and the zero sequence phase of voltage after reclosing at 180ms, altogether calculate transmission line malfunction before 3 cycles, The positive sequence phase of the voltage of 86 points, negative phase-sequence phase and zero sequence phase data in 9 cycles after 9 cycles, reclosing after failure.
(3) current sequence components before and after computing electric power line failure
Before computing electric power line failure after 3 cycles, failure after 9 cycles, reclosing 9 cycles electric current positive sequence phase, negative phase-sequence Phase and zero sequence phase, i.e., before transmission line malfunction after 3 cycles, failure after 9 cycles, reclosing in 9 cycles, at interval of 5ms A point is taken, calculates electric current positive sequence phase, negative phase-sequence phase and the zero sequence phase of the point.Such as the current sequence components data of first point For the electric current sequence minute of the positive sequence phase of electric current, negative phase-sequence phase and zero sequence phase, then second point at 60ms before transmission line malfunction Positive sequence phase, negative phase-sequence phase and zero sequence phase of the data for electric current at 55ms before transmission line malfunction are measured, and so on, until The positive sequence phase of electric current, negative phase-sequence phase and zero sequence phase at 180ms after to transmission line malfunction；Again from transmission line of electricity reclosing when Positive sequence phase, negative phase-sequence phase and the zero sequence phase for starting that an electric current is calculated at interval of 5ms are carved, is overlapped until obtaining transmission line of electricity Positive sequence phase, negative phase-sequence phase and the zero sequence phase of electric current after lock at 180ms, calculate 3 cycles, failure before transmission line malfunction altogether The positive sequence phase of the electric current of 86 points, negative phase-sequence phase and zero sequence phase data in 9 cycles after 9 cycles, reclosing afterwards.
(4) each side voltage and current order components before and after calculating transformer failure
The high voltage side of transformer of 9 cycles after 9 cycles, reclosing after 3 cycles, failure before calculating transformer failure, medium voltage side, Positive sequence phase, negative phase-sequence phase and the zero sequence phase of each side voltage and current of low-pressure side, i.e., before transformer fault 9 after 3 cycles, failure After cycle, reclosing in 9 cycles, a point is taken at interval of 5ms, calculates the positive sequence phase of each side voltage and current of transformer of the point Position, negative phase-sequence phase and zero sequence phase.Voltage and current order components data such as first point are transformation at 60ms before transformer fault Each side voltage and current positive sequence phase of device, negative phase-sequence phase and zero sequence phase, the voltage and current order components data of second point are transformation Each side voltage and current positive sequence phase of transformer, negative phase-sequence phase and zero sequence phase before device failure at 55ms, and so on, until Positive sequence phase, negative phase-sequence phase and the zero sequence phase of each side voltage and current of transformer after to transformer fault at 180ms；Again from change Depressor Reclosing Instant starts to calculate positive sequence phase, the negative phase-sequence phase and zero of each side voltage and current of a transformer at interval of 5ms Sequence phase, the positive sequence phase of each side voltage and current of transformer after obtain transformer reclosing at 180ms, negative phase-sequence phase and Zero sequence phase, the transformer of 86 points is each in 9 cycles after 9 cycles, reclosing after 3 cycles, failure before calculation transformer fault altogether Side voltage and current positive sequence phase, negative phase-sequence phase and zero sequence phase data.
(5) current sequence components before and after calculating circuit breaker failure
Calculate before circuit breaker failure positive sequence phase, the negative phase-sequence of the electric current of 9 cycles after 9 cycles, reclosing after 3 cycles, failure Phase and zero sequence phase, i.e., take after 9 cycles, reclosing in 9 cycles before circuit breaker failure after 3 cycles, failure at interval of 5ms One point, calculates the positive sequence phase, negative phase-sequence phase and zero sequence phase of the stream of the point.As the current sequence components data of first point are The positive sequence phase of electric current, negative phase-sequence phase and zero sequence phase at 60ms before failure, the current sequence components data of second point are failure Electric current positive sequence phase, negative phase-sequence phase and zero sequence phase at preceding 55ms, and so on, after obtain circuit breaker failure at 180ms Positive sequence phase, negative phase-sequence phase and the zero sequence phase of electric current, then since breaker Reclosing Instant an electricity is calculated at interval of 5ms Positive sequence phase, negative phase-sequence phase and the zero sequence phase of stream, the positive sequence phase of the electric current after obtain breaker reclosing at 180ms Position, negative phase-sequence phase and zero sequence phase, are calculated before circuit breaker failure after 3 cycles, failure after 9 cycles, reclosing 86 in 9 cycles altogether Positive sequence phase, negative phase-sequence phase and the zero sequence phase data of the electric current of point.
Step 2022-5：, calculate failure before and after each primary equipment element poor flow valuve.
(1) bus-bar fault pre-post difference flow valuve is calculated
Calculate before bus-bar fault after 3 cycles, failure after 9 cycles, reclosing the poor flow valuve of the ABC three-phase voltages of 9 cycles and Phase value, i.e., take a point after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before bus-bar fault at interval of 5ms, calculates The poor flow valuve and phase value of the three-phase voltage of the point.Poor flow valuve data such as first point are three-phase electricity at 60ms before bus-bar fault The poor flow valuve and phase value of pressure, the poor flow valuve data of second point are the poor flow valuve and phase of three-phase voltage at 55ms before bus-bar fault Place value, and so on, after obtain bus-bar fault at 180ms three-phase voltage poor flow valuve and phase value；Overlapped again from busbar The lock moment starts to calculate the poor flow valuve and phase value of a three-phase voltage at interval of 5ms, until after busbar reclosing at 180ms The poor flow valuve and phase value of three-phase voltage, are calculated before bus-bar fault after 3 cycles, failure after 9 cycles, reclosing 86 in 9 cycles altogether The poor flow valuve and phase data of the three-phase voltage of a point.
(2) computing electric power line failure pre-post difference flow valuve
The difference of the ABC three-phase currents of 9 cycles flows after 9 cycles, reclosing after 3 cycles, failure before computing electric power line failure Value and phase value, i.e., take one after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before transmission line malfunction at interval of 5ms It is a, calculate the poor flow valuve and phase value of the three-phase current of the point.Poor flow valuve data such as first point are transmission line malfunction The poor flow valuve and phase value of three-phase current at preceding 60ms, the poor flow valuve data of second point are at 55ms before transmission line malfunction three The poor flow valuve and phase value of phase current, and so on, after obtain transmission line malfunction at 180ms three-phase current poor flow valuve And phase value；Calculate the poor flow valuve and phase value of a three-phase current at interval of 5ms since transmission line of electricity Reclosing Instant again, Until the poor flow valuve and phase value after transmission line of electricity reclosing at 180ms, calculate altogether before transmission line malfunction 9 after 3 cycles, failure After cycle, reclosing in 9 cycles the three-phase current of 86 points poor flow valuve and phase data.
(3) transformer fault pre-post difference flow valuve
Before calculating transformer failure after 3 cycles, failure after 9 cycles, reclosing the ABC three-phase currents of 9 cycles poor flow valuve And phase value, i.e., a point is taken at interval of 5ms after 9 cycles, reclosing in 9 cycles after 3 cycles, failure before transformer fault, Calculate the poor flow valuve and phase value of the three-phase current of the point.Poor flow valuve data such as first point are before transformer fault at 60ms The poor flow valuve and phase value of three-phase current, the poor flow valuve data of second point are the difference of three-phase current at 55ms before transformer fault Flow valuve and phase value, and so on, until after transformer fault at 180ms three-phase current poor flow valuve and phase value；Again from change Depressor Reclosing Instant starts to calculate the poor flow valuve and phase value of a three-phase current at interval of 5ms, until transformer reclosing The poor flow valuve and phase value of three-phase current at 180ms afterwards, altogether 9 cycles, coincidence after 3 cycles, failure before calculation transformer fault After lock in 9 cycles the three-phase current of 86 points poor flow valuve and phase data.
Step 2022-6：The measurement impedance of circuit before and after calculating failure.
The data of route survey impedance every bit are grounded including A phases, B phases are grounded, C phases are grounded, AB is alternate, BC is alternate, CA Alternate measurement impedance and phase.60ms is to 180ms after failure before failure, then from Reclosing Instant to coincidence after the 180ms times In the range of value；A point is taken at interval of 5ms, calculates the route survey impedance data of 86 points before and after line fault altogether.
Step 2022-7：The frequecy characteristic amount of busbar before and after calculating failure.
The data of frequecy characteristic amount every bit include the frequency values of busbar ABC three-phases.60ms is to after failure before failure 180ms, then from Reclosing Instant to coincidence after value in 180ms time ranges, take a point at interval of 5ms, calculate busbar altogether The frequecy characteristic amount data of 86 points before and after failure.
Step 2022-8：The fault localization characteristic quantity of circuit before and after calculating failure.
Fault localization characteristic quantity is mainly including this side station single end distance measurement result of circuit, offside station single end distance measurement result, double Hold distance measurement result and excessive impedance value.Every faulty line contains one group of fault localization characteristic quantity.60ms is to failure before failure 180ms afterwards, then from Reclosing Instant to coincidence after value in 180ms time ranges, take a point at interval of 5ms, calculate line altogether The barrier ranging characteristic quantity data of 86 points before and after the failure of road.
Step 2022-9：Protection act characteristic quantity before and after calculating failure.
One group of protection act characteristic quantity includes the primary equipment information of protection, first time operating time of protection (divides ABC tri- Phase), protection act is separate, automatically reset the time and (divide ABC three-phases), protects actuation time (dividing ABC three-phases), protection again again Act separate.
60ms is to 180ms after failure before failure, then from Reclosing Instant to coincidence after value in 180ms time ranges, A point is taken at interval of 5ms, calculates the protection act characteristic quantity data of 86 points before and after failure altogether.
Step 2022-10：The motion characteristic amount of breaker before and after calculating failure.
One group of breaker actuation characteristic quantity includes relevant primary equipment information, first time breaker time (divides ABC Three-phase), circuit breaker trip is separate, fault clearing time (dividing ABC three-phases) on waveform, the switching value time of coincidence (dividing ABC three-phases), The time of coincidence (dividing ABC three-phases), breaker on waveform again trip time (dividing ABC three-phases), breaker trip again it is separate, Fault clearing time (dividing ABC three-phases), integral energy (dividing ABC three-phases) again on waveform.
60ms is to 180ms after failure before failure, then from Reclosing Instant to coincidence after value in 180ms time ranges, A point is taken at interval of 5ms, calculates the protection act characteristic quantity data of 86 points before and after breaker actuation failure altogether.
Step 2022-11：The Wave data of each primary equipment element before and after calculating failure.
Original waveform data is uniformly normalized to 5kHz sample frequencys, i.e., per 100 sampled points of cycle, is calculated each 10 weeks waveform datas after 10 weeks waveform datas and reclosing after 3 weeks waveform datas, failures before primary equipment element fault One sub-value, 3 cycle waveforms before each primary equipment element fault are stored according to the ASCII standard in COMTRADE forms respectively 10 weeks waveform datas after 10 weeks waveform datas and reclosing after data, failure.English half is used between each sample point data Angle comma separates.
(1) Wave data before and after calculating bus-bar fault
The Wave data of the three-phase voltage of corresponding tetra- passages of ABCN of busbar is extracted from fault recorder data file, will The Wave data of three-phase voltage is uniformly normalized to 5kHz sample frequencys, calculates before bus-bar fault after 3 weeks waveform datas, failures 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing, and store before failure after 3 weeks waveform datas, failures 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing.
(2) Wave data before and after computing electric power line failure
The Wave data of the three-phase current of circuit corresponding A tetra- passages of BCN is extracted from fault recorder data file, by three The Wave data of phase current is uniformly normalized to 5kHz sample frequencys, 3 weeks waveform datas, failures before computing electric power line failure 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing afterwards, and store 3 weeks waveform datas, failures before failure 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing afterwards.
(3) each side wave graphic data before and after calculating transformer failure
The corresponding ABCN in three side of extraction transformer adds up to the three-phase voltage of 12 passages from fault recorder data file Wave data, 12 passages three-phase current Wave data, and the waveform number of the Wave data of three-phase voltage and three-phase current According to being uniformly normalized to 5kHz sample frequencys, 10 cycle waveforms after 3 weeks waveform datas, failures before each side failure of calculating transformer 10 weeks waveform datas are once worth after data and reclosing, and store before each side failure of transformer after 3 weeks waveform datas, failures 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing.
(4) neutral point current Wave data before and after storage transformer fault
The waveform of the three-phase current of transformer neutral point corresponding A tetra- passages of BCN is extracted from fault recorder data file Data, and three-phase Wave data is uniformly normalized to 5kHz sample frequencys, 3 cycle waveforms before calculating transformer neutrality point failure 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing after data, failure, store transformer neutral point failure 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing after preceding 3 weeks waveform datas, failures.Each sampling number Separated between using English half-angle comma.
(5) Wave data before and after storage circuit breaker failure
The Wave data of the three-phase current of breaker corresponding A tetra- passages of BCN is extracted from fault recorder data file, will The Wave data of three-phase current is uniformly normalized to 5kHz sample frequencys, calculates 3 weeks waveform datas, failures before circuit breaker failure 10 weeks waveform datas once one sub-value of value, and storing respectively 3 before circuit breaker failure after 10 weeks waveform datas and reclosing afterwards 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing after all waveform datas, failure.
Step 203：By analysis model and fault characteristic value deposit database, make for fault diagnosis and crash analysis With.
The electric power system fault characteristic quantity modeling method based on fault recorder data that the embodiment of the present invention proposes, passes through base In based on fault recorder data, electric system primary equipment model is established, by primary equipment model and fault recorder data file In recording passage be associated, obtain analysis model；Failure wave-recording before and after extraction fault moment in a period of time again Data, calculate the fault characteristic value of each primary equipment element, and providing data for consequent malfunction analysis supports.
Corresponding to the embodiment of the method shown in Fig. 1 and Fig. 2, as shown in figure 3, present embodiments providing a kind of based on failure record The electric power system fault characteristic quantity model building device of wave number evidence, the device include：
Primary equipment model building module, for based on fault recorder data, establishing electric system primary equipment model；
Analysis model building module, for by the recording passage in primary equipment model and fault recorder data file It is associated, obtains analysis model；
Data extraction module, the failure for a period of time before and after the extraction fault moment from each fault recorder data file Recorder data；
Fault characteristic value computing module, for extracting the fault recorder data before and after fault moment in a period of time, calculates The fault characteristic value of each primary equipment element；
Memory module, for storing analysis model and fault characteristic value, uses for fault diagnosis and crash analysis.
Further, the electric power system fault characteristic quantity model building device based on fault recorder data, further includes：
Waveform alignment module, for when failure occurs, finding the catastrophe point by traveling through Wave data, carrying out multiple faults The waveform alignment of recorder data.
In addition, fault characteristic value computing module, is specifically used for：
To in a period of time after failure before failure, a point is taken at interval of 5ms, according to the fault recorder data of the point, Calculate each primary equipment before and after the failure of the point corresponding effective value, 1-20 subharmonic values, DC component and time Attenuation constant, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act characteristic quantity With breaker actuation characteristic quantity；
Then in Reclosing Instant to after overlapping in time range, a point is taken at interval of 5ms, is recorded according to the failure of the point Wave number evidence, calculates the corresponding effective value of each primary equipment before and after the failure of the point, 1-20 subharmonic values, DC component And time attenuation constant, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act Characteristic quantity and breaker actuation characteristic quantity.
The electric power system fault characteristic quantity model building device based on fault recorder data that the embodiment of the present invention proposes, passes through one Secondary device model building module establishes electric system primary equipment model, by analysis model building module by primary equipment Model is associated with the recording passage in fault recorder data file, obtains analysis model；Pass through data extraction module Fault recorder data before and after extraction fault moment in a period of time, passes through fault characteristic value computing module and calculates each primary equipment The fault characteristic value of element, provides data for consequent malfunction analysis by memory module and supports.
Although above-mentioned be described the embodiment of the present invention with reference to attached drawing, model not is protected to the present invention The limitation enclosed, those skilled in the art should understand that, on the basis of technical scheme, those skilled in the art are not Need to make the creative labor the various modifications that can be made or deformation still within protection scope of the present invention.

Claims (9)

1. a kind of electric power system fault characteristic quantity modeling method based on fault recorder data, it is characterized in that, comprise the following steps：
Based on fault recorder data, electric system primary equipment model is established, by primary equipment model and failure wave-recording file Recording passage be associated, obtain analysis model；
Fault recorder data before and after extraction fault moment in a period of time, calculates the fault characteristic value of each primary equipment element；
By analysis model and fault characteristic value deposit database, used for fault diagnosis and crash analysis.
2. the electric power system fault characteristic quantity modeling method according to claim 1 based on fault recorder data, its feature It is, it is described to be based on fault recorder data, electric system primary equipment model is established, by primary equipment model and failure wave-recording file In recording passage be associated, obtain analysis model, including：
Based on fault recorder data in each failure wave-recording file, electric system primary equipment model is established；
Increase corresponding multiple analog quantity channels number and multiple switch amount in each failure wave-recording file in primary equipment model to lead to The channel number in road, forms analysis model.
3. the electric power system fault characteristic quantity modeling method according to claim 1 based on fault recorder data, its feature It is that the analysis model includes bus model, model of power transmission system, transformer model, breaker model and protective device Model；
Wherein, the bus model include busbar title, busbar numbering, voltage class, relevant protective device number, it is relevant The voltage channel number in recorder data is numbered and corresponded to breaker apparatus；
The model of power transmission system includes line name, circuit number, voltage class, line impedance parameter, line length, correlation Protective device numbering, relevant breaker apparatus numbering, the current channel number in corresponding recorder data；
The transformer model include transformer name, transformer numbering, two or three side transformer volume, relevant protective device compile Number；
The breaker model includes switching value channel number and the affiliated signal type of switching value in corresponding failure wave-recording file；
The protective device model includes switching value channel number and the affiliated signal type of switching value in corresponding failure wave-recording file.
4. the electric power system fault characteristic quantity modeling method according to claim 1 based on fault recorder data, its feature It is after obtaining analysis model, when failure occurs, obtains current break point by traveling through Wave data, dashed forward according to electric current Height carries out the waveform alignment of multiple faults recorder data.
5. the electric power system fault characteristic quantity modeling method according to claim 1 based on fault recorder data, its feature It is that the fault characteristic value is normal including effective value, 1-20 subharmonic values, DC component and time decay before and after failure Number, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act characteristic quantity, breaker Motion characteristic amount and Wave data；Primary equipment element includes busbar, transmission line of electricity, transformer and breaker.
6. the electric power system fault characteristic quantity modeling method according to claim 4 based on fault recorder data, its feature It is the fault recorder data before and after extraction fault moment in a period of time, calculates voltage electricity before and after each primary equipment element fault Flow virtual value, 1-20 subharmonic values, DC component and time attenuation constant, order components, poor flow valuve, route survey impedance, frequency Characteristic quantity, fault localization characteristic quantity, protection act characteristic quantity and breaker actuation characteristic quantity, including：
From each failure wave-recording file extract fault moment before and after a period of time fault recorder data；
To in a period of time after failure before failure, a point is taken at interval of 5ms, according to the fault recorder data of the point, is calculated The corresponding effective value of each primary equipment, 1-20 subharmonic values, DC component and time decay are normal before and after the point failure Number, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act characteristic quantity and open circuit Device motion characteristic amount；
In time range, a point is taken at interval of 5ms to after overlapping in Reclosing Instant, according to the fault recorder data of the point, Calculating each primary equipment before and after the point failure corresponding effective value, 1-20 subharmonic values, DC component and time declines Subtract constant, order components, poor flow valuve, route survey impedance, frequecy characteristic amount, fault localization characteristic quantity, protection act characteristic quantity and Breaker actuation characteristic quantity.
7. the electric power system fault characteristic quantity modeling method according to claim 4 based on fault recorder data, its feature It is that the fault recorder data before and after extraction fault moment in a period of time, calculates waveform number before and after each primary equipment element fault According to, including：
The corresponding three-phase voltage of Wave data, circuit of the corresponding three-phase voltage of busbar is extracted from each failure wave-recording file respectively The Wave data and breaker pair of the corresponding three-phase voltage in each side of Wave data, transformer and neutral point with electric current and electric current The Wave data for the three-phase current answered；
The Wave data extracted is subjected to unified normalized, and calculates 3 cycle waveforms before each primary equipment element fault 10 weeks waveform datas are once worth after 10 weeks waveform datas and reclosing after data, failure；
According to 10 cycle ripples after 3 weeks waveform datas, failures before each primary equipment element fault of COMTRADE stored in file format 10 weeks waveform datas are once worth after graphic data and reclosing.
8. a kind of electric power system fault characteristic quantity model building device based on fault recorder data, appoints suitable for claim 1-7 The electric power system fault characteristic quantity modeling method based on fault recorder data described in one, it is characterized in that, including：
Primary equipment model building module, for based on fault recorder data, establishing electric system primary equipment model；
Analysis model building module, for primary equipment model and the recording passage in failure wave-recording file to be closed Connection, obtains analysis model；
Data extraction module, the fault recorder for a period of time before and after the extraction fault moment from each failure wave-recording file According to；
Fault characteristic value computing module, for according to the fault recorder data in a period of time before and after the fault moment extracted, Calculate the fault characteristic value of each primary equipment element；
Memory module, for storing analysis model and fault characteristic value, uses for fault diagnosis and crash analysis.
9. the electric power system fault characteristic quantity model building device according to claim 8 based on fault recorder data, its feature It is to further include：
Waveform alignment module, for when failure occurs, finding the catastrophe point by traveling through Wave data, carrying out multiple faults recording The waveform alignment of data.
CN201711218852.8A 2017-11-28 2017-11-28 A kind of electric power system fault characteristic quantity modeling method based on fault recorder data Pending CN107977507A (en)

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CN117389967A (en) * 2023-12-13 2024-01-12 国网江西省电力有限公司电力科学研究院 Multi-dimensional fault information extraction processing and diagnosis method and system for power transformation equipment
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