CN109085441A - A kind of fault waveform playback system and method - Google Patents
A kind of fault waveform playback system and method Download PDFInfo
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- CN109085441A CN109085441A CN201811123010.9A CN201811123010A CN109085441A CN 109085441 A CN109085441 A CN 109085441A CN 201811123010 A CN201811123010 A CN 201811123010A CN 109085441 A CN109085441 A CN 109085441A
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- breaker
- voltage
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- control unit
- fault
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Locating Faults (AREA)
Abstract
The application discloses a kind of fault waveform playback system and method; the system comprises control unit and at least one set of fault recurrence devices, and fault recurrence device includes transient heavy current amplifier, secondary voltage generator, current transformer, voltage transformer, protective relaying device and breaker；Control unit is connect with the input terminal of the input terminal of transient heavy current amplifier and secondary voltage generator respectively, the output end of transient heavy current amplifier and the primary side of current transformer connect, and the output end of secondary voltage generator and the secondary circuit of voltage transformer connect；The secondary side of current transformer is connect with protective relaying device, and the secondary circuit of voltage transformer is connect with protective relaying device, and protective relaying device is connect with breaker.Secondary failure electric current, the voltage waveform of wave file are played back out by the application without distortion using transient heavy current generator, secondary voltage generator, and defect location precision is higher, and improves the working efficiency of fault recurrence.
Description
Technical field
This application involves electric system the field of test technology more particularly to a kind of fault waveform playback system and methods.
Background technique
Currently, both at home and abroad under secondary low current physical fault wave shape playback technical research it is very much.Domestic relay
Tester producer is protected, wave shape playback is carried out using the recorded wave file of protective relaying device or fault wave recording device, passes through solution
Recorded wave file is analysed, by reading the limitation of data point number, channel limits, and obtains the phases such as wave-recording sampling points and fault actions time
Information is closed, corresponding wave-record chart is played back by relay protection tester, to determine the position of electric system existing defects.
But this relay-protection tester wave record playback technology can only carry out fault waveform to single protective relaying device
Playback can not achieve the whole playback test of multiple associated protective relaying devices, cause the working efficiency of fault recurrence low.Together
When, this fault recurrence technology is also only confined on secondary device and circuit, and not accounting for current transformer is once being
Unite transient fault when Transfer characteristic influence, can not the failure that actually occurs of true reappearance, be accurately positioned and lack when being fault recurrence
It falls into and brings difficulty.
Summary of the invention
The application provides a kind of fault waveform playback system and method, to solve existing fault recurrence technical work low efficiency
And the problem of defect location precision deficiency.
In a first aspect, the application provides a kind of fault waveform playback system, including control unit and at least one set of failure
Playback reproducer, the fault recurrence device include transient heavy current amplifier, secondary voltage generator, current transformer, voltage
Mutual inductor, protective relaying device and breaker；Wherein, the transient heavy current amplifier and the current transformer constitute electric current
Transmission channel, the secondary voltage generator and the voltage transformer constitute voltage transmission access, the electric current transmission channel
With the voltage transmission path in parallel；
Described control unit respectively with the input terminal of the transient heavy current amplifier and the secondary voltage generator
Input terminal connection, the output end of the transient heavy current amplifier connect with the primary side of the current transformer, described two
The output end of secondary voltage generator is connect with the secondary circuit of the voltage transformer；The secondary side of the current transformer and institute
Protective relaying device connection is stated, the secondary circuit of the voltage transformer is connect with the protective relaying device, and the relay is protected
Protection unit is connect with the breaker.
Further, the secondary auxiliary contact of the breaker is electrically connected with the control unit, with single to the control
Member sends the location status information of the breaker.
Optionally, described control unit is connect with the input terminal of the transient heavy current amplifier by optical fiber, the control
Unit processed is connect with the input terminal of the secondary voltage generator by optical fiber.
Second aspect, the application also provide a kind of fault waveform back method, and described method includes following steps:
Recorded wave file is parsed by control unit, extracts fault-current signal and failure voltage signal；
Described control unit sends the fault-current signal to transient heavy current amplifier, at the same described control unit to
Secondary voltage generator sends the failure voltage signal；
The current signal that the transient heavy current amplifier exports is transmitted to the primary side of current transformer, while by institute
The voltage signal for stating the output of secondary voltage generator is transmitted to the secondary circuit of voltage transformer；
Protective relaying device receives secondary current and the voltage transformer output of current transformer output
After secondary voltage, according to the movement of the protective relaying device and breaker, defect is positioned.
Further, the movement according to protective relaying device and breaker, position defect the step of include:
It is dynamic to control the breaker accordingly exported according to the secondary current and the secondary voltage for the protective relaying device
Make；
After the breaker actuation, the location status information of the breaker is sent to described control unit；
Described control unit is according to the location status information of each breaker, comprehensive descision and positioning defect.
Further, the location status information includes the number of the breaker and the state of the breaker, institute
The state for stating breaker is "on" position or tripped condition.
Optionally, the recorded wave file is COMTRADE format.
What this programme had, which has the beneficial effect that, one or more groups of fault recurrence devices is arranged according to actual test needs,
Multiple groups fault recurrence may be implemented while carrying out, to improve the working efficiency of fault recurrence, the application is mutual in view of electric current
The influence of sensor Transfer characteristic in primary system transient fault joined transient heavy current hair before current transformer primary side
Raw device, can simulate primary fault high current, transient heavy current generator, secondary voltage generator can be distortionless by wave
Secondary failure electric current, the voltage waveform of shape files play back out, the failure that can be actually occurred with true reappearance, rather than to failure
Realization that waveform simplifies, false, test is more intuitive, and defect location precision is higher, can be widely applied to electric system two
Minor loop, protective relaying device debugging and accident investigation in.
Detailed description of the invention
Fig. 1 is the structural block diagram of the fault waveform playback system shown in the embodiment of the present application one；
Fig. 2 is the flow chart of the fault waveform back method shown in the embodiment of the present application two.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with attached drawing, it is right
Technical solution in the embodiment of the present application is clearly and completely described.
As shown in Figure 1, the embodiment of the present application one provides a kind of fault waveform playback system, including control unit 1 and extremely
Few one group of fault recurrence device 2, fault recurrence device 2 include transient heavy current amplifier 201, secondary voltage generator 203, electricity
Current transformer 202, voltage transformer 204, protective relaying device 205 and breaker 206；Wherein, transient heavy current amplifier 201
Electric current transmission channel is constituted with current transformer 202, secondary voltage generator 203 and voltage transformer 204 constitute voltage transmission
Access, electric current transmission channel and voltage transmission path in parallel.
The input with the input terminal of transient heavy current amplifier 201 and secondary voltage generator 203 respectively of control unit 1
End connection, the output end of transient heavy current amplifier 201 are connect with the primary side of current transformer 202, secondary voltage generator
203 output end is connect with the secondary circuit of voltage transformer 204；The secondary side and protective relaying device of current transformer 202
205 connections, the secondary circuit of voltage transformer 204 are connect with protective relaying device 205, protective relaying device 205 and breaker
206 connections.
In substation, it is generally equipped with fault wave recording device, when substation is respectively spaced in the event of failure, failure can be automatically recorded
Electric current and false voltage.When physical fault, fault wave recording device can generate recorded wave file, which is usually COMTRADE
Format, it is only necessary to recorded wave file is exported, imports the recorded wave file in the control unit 1 of this fault waveform playback system, by
Control unit 1 parses fault-current signal and failure voltage signal.
For electric current transmission channel, the fault-current signal is sent to transient heavy current amplifier by control unit 1
201, a high current signal is converted into after transient heavy current amplifier 201, and a high current signal is applied to
The secondary current of the primary side of current transformer 202, the secondary side output of current transformer 202 is connect by protective relaying device 205
It receives.Each transient heavy current generator 201 is corresponding to receive a fault-current signal, and presses same big no-load voltage ratio for fault current
Signal amplification.High current signal is corresponding with the amplitude of fault-current signal, current response rate in recorded wave file, primary big
Current signal is compared with fault-current signal, and only current amplitude changes, other characteristic quantities (frequency, harmonic content etc.) do not occur
Variation.
For voltage transmission access, the failure voltage signal is sent to secondary voltage generator 203 by control unit 1,
The voltage signal that secondary voltage generator 203 exports is applied in the secondary circuit of voltage transformer 204, voltage transformer
The voltage signal of 204 secondary circuits output is received by protective relaying device 205.Wherein, the electricity that secondary voltage generator 203 exports
Signal is pressed, amplitude, voltage responsive speed are corresponding with the failure voltage signal in recorded wave file.
By taking the transformer of three circles as an example, it need to apply a high current letter in the primary side of three side current transformer of transformer
Number, the voltage signal that secondary voltage generator 203 exports needs to be applied in the secondary circuit of three side voltage transformers.Relay is protected
After protection unit 205 receives the secondary current of the current transformer output and the secondary voltage of voltage transformer output,
According to the movement of protective relaying device 205 and breaker 206, defect or hidden danger can be quickly positioned.
In the present embodiment, multiple groups are can be set in fault recurrence device 2, for example Fig. 1 shows 3 groups of fault recurrence devices 2 simultaneously
The quantity of the case where row work, fault recurrence device 2 can be selected according to test demand and scale, and the application does not limit this
System can carry out multiple groups playback work simultaneously, improve fault recurrence work since the application is parallel using multiple groups playback reproducer
Efficiency.Control unit 1 is connect with the input terminal of transient heavy current amplifier 201 by optical fiber, and control unit 1 and secondary voltage are sent out
The input terminal of raw device 203 is connected by optical fiber, and accurate, the stable transmission of signal may be implemented.
The secondary auxiliary contact of breaker 206 is electrically connected with control unit 1, can be certainly in this way when breaker 206 acts
It is dynamic that the location status information of breaker 206 is sent to control unit 1, the position shape of the comprehensive each breaker 206 of control unit 1
State information, more accurately to orient defect present in electrical secondary system, such as if it exists wiring error, fixed value adjusting mistake and
The failures such as breaker control circuit defect, the result of the action of mistake will be found simultaneously to rectify and improve in time.
In the present embodiment, one or more groups of fault recurrence devices can be set, multiple groups may be implemented according to actual test needs
Fault recurrence carries out simultaneously, to improve the working efficiency of fault recurrence, the application is once being in view of current transformer
The influence of Transfer characteristic, joined transient heavy current generator, Neng Goumo before current transformer primary side when system transient fault
Primary fault high current is drawn up, transient heavy current generator, secondary voltage generator can be distortionless by the two of wave file
Secondary fault current, voltage waveform play back out, the failure that can be actually occurred with true reappearance, rather than simplify to fault waveform
, false realization, test more intuitive, defect location precision is higher, can be widely applied to secondary loop in power system, after
In the debugging and accident investigation of electrical protective device.
As shown in Fig. 2, the embodiment of the present application two provides a kind of fault waveform back method, for event described in embodiment one
Hinder wave shape playback system, described method includes following steps:
Step S101 parses recorded wave file by control unit, extracts fault-current signal and false voltage letter
Number.In the present embodiment, the recorded wave file is the derived COMTRADE formatted file from fault wave recording device.
Step S102, described control unit send the fault-current signal to transient heavy current amplifier, while described
Control unit sends the failure voltage signal to secondary voltage generator.
The current signal that the transient heavy current amplifier exports is transmitted to the primary of current transformer by step S103
Side, while the voltage signal that the secondary voltage generator exports is transmitted to the secondary circuit of voltage transformer.
Step S104, protective relaying device receive the secondary current and the mutual induction of voltage of the current transformer output
After the secondary voltage of device output, according to the movement of the protective relaying device and breaker, defect is positioned.
More specifically, step S104 further include: protective relaying device 205 is according to the secondary current and the secondary electricity
Pressure controls the breaker 206 accordingly exported and acts；After the movement of breaker 206, the location status information of breaker 206 is sent out
It send to control unit 1；Control unit 1 is according to the location status information of each breaker 206, comprehensive descision and positioning defect.Wherein,
The location status information includes the number of breaker 206 and the state of breaker 206, and the state of the breaker is to close a floodgate
State or tripped condition, being equivalent to the number of breaker 206, there are one-to-one relationships with its breaker tripping and closing state.Such as, it is assumed that
The number of a certain breaker 206 in certain group fault recurrence device 2 is A1, and after carrying out fault recurrence, movement is tripping, then
The location status information of the breaker 206 is (breaker A1；Tripping).Location status information described here content (including compile
Number and text) and format be only exemplary, it is intended to those skilled in the art more fully understand this programme, it should be understood that
It is that content, format and sending method of location status information etc. can be set with specific reference to practical application.
Whether location status information and each breaker 206 movement that control unit 1 is fed back according to each breaker 206 accord with
It is logical, to determine which electrical secondary system has.For example, wanting jumping circuit open circuit single-phase again when the single-phase transient fault of route
Single-pole reclosing is patrolled if testing result is that three-phase tripping does not have reclosing it may be speculated that its failure single-hop aggravates to close a floodgate
It is of problems for collecting, and such logic or loop fault positioning just have emphasis.
In the present embodiment, one or more groups of fault recurrence devices can be set, multiple groups may be implemented according to actual test needs
Fault recurrence carries out simultaneously, to improve the working efficiency of fault recurrence, the application is once being in view of current transformer
The influence of Transfer characteristic, joined transient heavy current generator, Neng Goumo before current transformer primary side when system transient fault
Primary fault high current is drawn up, transient heavy current generator, secondary voltage generator can be distortionless by the two of wave file
Secondary fault current, voltage waveform play back out, the failure that can be actually occurred with true reappearance, rather than simplify to fault waveform
, false realization, test more intuitive, defect location precision is higher, can be widely applied to secondary loop in power system, after
In the debugging and accident investigation of electrical protective device.Breaker to control unit automatic feedback act after location status information,
After being summarized the location status information of each breaker in fault recurrence device by control unit, in conjunction with interrelated logic rule
Comprehensive analysis and judgement are carried out, realizes that defect is more accurately positioned.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by appended
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Same and similar part reference mutually between each embodiment in this specification.
Claims (7)
1. a kind of fault waveform playback system, which is characterized in that including control unit and at least one set of fault recurrence device, institute
Stating fault recurrence device includes transient heavy current amplifier, secondary voltage generator, current transformer, voltage transformer, relay
Protective device and breaker；Wherein, the transient heavy current amplifier and the current transformer constitute electric current transmission channel, institute
It states secondary voltage generator and the voltage transformer constitutes voltage transmission access, the electric current transmission channel and the voltage pass
Defeated path in parallel；
Described control unit is defeated with the input terminal of the transient heavy current amplifier and the secondary voltage generator respectively
Enter end connection, the output end of the transient heavy current amplifier is connect with the primary side of the current transformer, the secondary electricity
The output end of pressure generator is connect with the secondary circuit of the voltage transformer；The secondary side of the current transformer and it is described after
Electrical protective device connection, the secondary circuit of the voltage transformer are connect with the protective relaying device, the relay protection dress
It sets and is connect with the breaker.
2. system according to claim 1, which is characterized in that the secondary auxiliary contact of the breaker and the control are single
Member electrical connection, to send the location status information of the breaker to described control unit.
3. system according to claim 1 or 2, which is characterized in that described control unit and the transient heavy current amplify
The input terminal of device is connected by optical fiber, and described control unit is connect with the input terminal of the secondary voltage generator by optical fiber.
4. a kind of fault waveform back method, which is characterized in that described method includes following steps:
Recorded wave file is parsed by control unit, extracts fault-current signal and failure voltage signal；
Described control unit sends the fault-current signal to transient heavy current amplifier, while described control unit is to secondary
Voltage generator sends the failure voltage signal；
The current signal that the transient heavy current amplifier exports is transmitted to the primary side of current transformer, while by described two
The voltage signal of secondary voltage generator output is transmitted to the secondary circuit of voltage transformer；
Protective relaying device receive current transformer output secondary current and voltage transformer output it is secondary
After voltage, according to the movement of the protective relaying device and breaker, defect is positioned.
5. according to the method described in claim 4, it is characterized in that, the movement according to protective relaying device and breaker,
Position defect the step of include:
The protective relaying device controls the breaker actuation accordingly exported according to the secondary current and the secondary voltage；
After the breaker actuation, the location status information of the breaker is sent to described control unit；
Described control unit is according to the location status information of each breaker, comprehensive descision and positioning defect.
6. according to the method described in claim 5, it is characterized in that, the location status information includes the number of the breaker
And the state of the breaker, the state of the breaker are "on" position or tripped condition.
7. according to the described in any item methods of claim 4-6, which is characterized in that the recorded wave file is COMTRADE format.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811123010.9A CN109085441B (en) | 2018-09-26 | 2018-09-26 | Fault waveform playback system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811123010.9A CN109085441B (en) | 2018-09-26 | 2018-09-26 | Fault waveform playback system and method |
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| CN109085441A true CN109085441A (en) | 2018-12-25 |
| CN109085441B CN109085441B (en) | 2021-02-02 |
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| CN201811123010.9A Active CN109085441B (en) | 2018-09-26 | 2018-09-26 | Fault waveform playback system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113609671A (en) * | 2021-08-02 | 2021-11-05 | 上海置信智能电气有限公司 | Fault recording file generation method and device based on simulation software |
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| CN104391498A (en) * | 2014-10-22 | 2015-03-04 | 国家电网公司 | Non-intrusive testing system for relay protection device and testing method thereof |
| CN104991981A (en) * | 2015-01-15 | 2015-10-21 | 国家电网公司 | Multi-file-source fault record replaying system and method based on high-performance processor |
| CN205562695U (en) * | 2016-01-13 | 2016-09-07 | 江苏省电力公司电力科学研究院 | Hierarchical test system of relay protection time delay |
| CN108445322A (en) * | 2018-03-19 | 2018-08-24 | 成都滕达科技有限公司 | A kind of relay protection fault back method |
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2018
- 2018-09-26 CN CN201811123010.9A patent/CN109085441B/en active Active
Patent Citations (5)
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| US20050107976A1 (en) * | 2004-06-23 | 2005-05-19 | Klijn Aaron C. | Programmable system for device testing and control |
| CN104391498A (en) * | 2014-10-22 | 2015-03-04 | 国家电网公司 | Non-intrusive testing system for relay protection device and testing method thereof |
| CN104991981A (en) * | 2015-01-15 | 2015-10-21 | 国家电网公司 | Multi-file-source fault record replaying system and method based on high-performance processor |
| CN205562695U (en) * | 2016-01-13 | 2016-09-07 | 江苏省电力公司电力科学研究院 | Hierarchical test system of relay protection time delay |
| CN108445322A (en) * | 2018-03-19 | 2018-08-24 | 成都滕达科技有限公司 | A kind of relay protection fault back method |
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| CN113609671A (en) * | 2021-08-02 | 2021-11-05 | 上海置信智能电气有限公司 | Fault recording file generation method and device based on simulation software |
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