CN104111434A - Detection method for fault indicator of physical simulating model - Google Patents
Detection method for fault indicator of physical simulating model Download PDFInfo
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- CN104111434A CN104111434A CN201410338076.5A CN201410338076A CN104111434A CN 104111434 A CN104111434 A CN 104111434A CN 201410338076 A CN201410338076 A CN 201410338076A CN 104111434 A CN104111434 A CN 104111434A
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Abstract
The invention discloses a detection method for a fault indicator of a physical simulating model. According to the similarity theory, the detecting method uses similar elements which have the same physical properties with those of an actual system to build the physical simulating model. The physical simulating model comprises a dynamic simulation simulating system and fault indicators. The dynamic simulation simulating system is composed of a simulating generator, a simulating transformer, a simulating 10 kV power transmission line, a simulating load, an arc suppression coil and related regulation, control, measurement and protection simulating devices; five groups of fault indicators are arranged on the 10 kV simulating power transmission line, each group comprises three fault indicators, and the three fault indicators are arranged on an A, B and C three-phase power line. According to the physical simulating model, the related parameters can be regulated agilely, the voltage and current characteristic waveform of the power distribution line can be actually simulated under a single-phase earth fault, the detection is quick, and the fault indicator detection accuracy is high.
Description
Technical field
The present invention relates to a kind of fault detector detection method of physical simulation model, belong to distribution network failure pointer detection technical field.
Background technology
Fault detector is applied in power distribution network, can detect in real time the normal operating condition at distribution line, and short circuit or the earth fault of fast detecting and location circuit, help the quick isolated fault section of related personnel, keeps in repair, and reduces power off time and power failure range.
In order to ensure that fault detector can precision maneuver when the line failure, before putting into operation, must detect the performance of fault detector.Detect but fault detector to be checked is installed on the circuit of actual distribution, need the coordination of each power department, time and effort consuming, and be subject to the safety of electric system, the restriction of economical operation.
Summary of the invention
The object of the invention is to propose a kind of simple to operate, stable and fault detector detection method that cost is relatively low.The method can, according to actual conditions flexible configuration, be carried out emulation to the power distribution network of different grid structures in reality.By the correlation parameter of different elements is carried out to flexible, the various operating modes of real simulation distribution line, the fault of simulation diverse location, but also various operational factors before and after can monitoring system measuring circuit fault, the action accuracy of detection indicator that can be true and reliable is a kind of well detection mode.
A fault detector detection method for physical simulation model, this detection mode is according to similarity theory, and the similar components that application has same physical properties with real system is set up a physical simulation model.This model can be to voltage, electric current, and impedance, power, the correlation parameters such as line length are adjusted flexibly, voltage, current characteristic waveform can real simulation distribution line generation singlephase earth fault time.
Physical simulation model of the present invention comprises: dynamic simulative emulation system and 5 groups of fault detectors.
Dynamic simulative emulation system of the present invention is built and is formed by analogue means such as simulating generator, analogue transformer, simulation 10kV transmission line of electricity, simulation load, arc suppression coil and relevant adjusting, control, measurement, protection.Simulation generator connection transformer; analogue transformer is through grounding through arc; output 10kV voltage is to transmission line simulation; simulation 10kV transmission line of electricity, by connecting the analogue means such as relevant adjusting, control, measurement, protection, arranges voltage, electric current; impedance; power, the correlation parameters such as line length, simulate 10kV transmission line of electricity dynamic simulation system.
Described fault detector divides 5 groups to be arranged on 10kV transmission line simulation, and every group has three fault detectors, and these three fault detector distributing installations are in A, B, C three-phase power line.
Compared with prior art, the invention has the beneficial effects as follows:
(1) model that our detection method is built can be adjusted flexibly to correlation parameter, voltage, current characteristic waveform can real simulation distribution line generation singlephase earth fault time;
(2) this detection method testing process is simple to operate, quick, accuracy rate is high.
Brief description of the drawings
Fig. 1 is physical simulation simulation system wiring schematic diagram in an embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail.
The present embodiment structural representation as shown in Figure 1, a kind of fault detector detection method of physical simulation model, according to similarity theory, the similar components that application has a same physical properties with real system is set up a physical simulation model; This model can be to voltage, electric current, and impedance, power, the correlation parameters such as line length are adjusted flexibly, voltage, current characteristic waveform can real simulation distribution line generation singlephase earth fault time.
Physical simulation model of the present invention comprises: dynamic simulative emulation system and 5 groups of fault detectors.
Dynamic simulative emulation system of the present invention is made up of analogue means such as simulating generator, analogue transformer, simulation 10kV transmission line of electricity, simulation load, arc suppression coil and relevant adjusting, control, measurement, protection.Simulation generator connection transformer; analogue transformer is through grounding through arc; output 10kV voltage is to transmission line simulation; simulation 10kV transmission line of electricity about regulating, control, measure, protecting analogue means, arranges voltage, electric current by connection; impedance; power, the correlation parameters such as line length, simulate 10kV transmission line of electricity dynamic simulation system.
5 groups of fault detectors of the present invention are numbered 1,2,3,4,5, are installed on 10kV transmission line simulation, and every group has three fault detectors, is arranged on respectively in A, B, C three-phase power line.
Consult Fig. 1, the step of the present embodiment is as follows:
Step 1, builds dynamic simulative emulation system, under the condition of power-off, hangs up fault detector;
Step 2, analogue ground transient state process, Closing Switch K1, KM24, QF24, QF11 and QF21, arrange D21 trouble spot A earth fault occur mutually, and fault detector can detect the voltage and current of simulation simultaneously, the 3rd group of A phase fault indicator sends the instruction of reporting to the police, and all the other fault detectors are failure to actuate;
Step 3, arranges D22 trouble spot B earth fault occurs mutually, and the 3rd group and the 4th group of B phase fault indicator send the instruction of reporting to the police, and all the other fault detectors are failure to actuate;
Step 4, arranges D23 trouble spot C earth fault occurs mutually, and the 3rd group and the 5th group of C phase fault indicator send the instruction of reporting to the police, and all the other fault detectors are failure to actuate;
Step 5, arranges D11 trouble spot B earth fault occurs mutually, and the 1st group of B phase fault indicator sends the instruction of reporting to the police, and all the other fault detectors are failure to actuate;
Step 6, arranges D12 trouble spot A earth fault occurs mutually, and the 1st and the 2nd group of A phase fault indicator sends the instruction of reporting to the police, and all the other fault detectors are failure to actuate;
Step 7, arranges D13 trouble spot C earth fault occurs mutually, and the 1st group of C phase fault indicator sends the instruction of reporting to the police, and all the other fault detectors are failure to actuate;
Step 8, repeats above step, and each step is carried out more than three times simulation test.
When after line-to-ground fault, all fault detectors instruction of all reporting to the police before trouble spot on faulty line, and fault detector behind trouble spot is failure to actuate.Like this, trouble spot is just defined within the fault of last action refers to the section of device and first fault detector formation of not moving.If fault detector meets such warning instruction, illustrate that fault detector action is correct; Otherwise, incorrect.
The foregoing is only one embodiment of the present invention, but not the present invention is limited.The present invention carries out flexible to the correlation parameter of different elements, the various operating modes of real simulation distribution line, the fault of simulation diverse location, but also various operational factors before and after can monitoring system measuring circuit fault, the action accuracy of detection indicator that can be true and reliable.
Claims (4)
1. a fault detector detection method for physical simulation model, is characterized in that, according to similarity theory, the similar components that application has same physical properties with real system is set up a physical simulation model; This model can be to voltage, electric current, and impedance, power, line length correlation parameter is adjusted flexibly, voltage, current characteristic waveform can real simulation distribution line generation singlephase earth fault time.
2. the fault detector detection method of a kind of physical simulation model according to claim 1, is characterized in that, described physical simulation model comprises: dynamic simulative emulation system and 5 groups of fault detectors.
3. the fault detector detection method of a kind of physical simulation model according to claim 2, it is characterized in that, described dynamic simulative emulation system forms by simulating generator, analogue transformer, simulation 10kV transmission line of electricity, simulation load, arc suppression coil and the analogue means about adjusting, control, measurement, protection; Simulation generator connection transformer; analogue transformer is through grounding through arc; output 10kV voltage is to transmission line simulation; simulation 10kV transmission line of electricity about regulating, control, measure, protecting analogue means, arranges voltage, electric current by connection; impedance; power, line length correlation parameter, simulates 10kV transmission line of electricity dynamic simulation system.
4. the fault detector detection method of a kind of physical simulation model according to claim 2, it is characterized in that, 5 groups of described fault detectors are installed on simulation 10kV transmission line of electricity, and every group has three fault detectors, is arranged on respectively in A, B, C three-phase power line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410338076.5A CN104111434A (en) | 2014-07-16 | 2014-07-16 | Detection method for fault indicator of physical simulating model |
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| CN201410338076.5A CN104111434A (en) | 2014-07-16 | 2014-07-16 | Detection method for fault indicator of physical simulating model |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483643A (en) * | 2014-11-27 | 2015-04-01 | 华中科技大学 | Modeling method based on detection platform of fault indicator for physical simulation of power distribution network |
| CN108446441A (en) * | 2018-02-11 | 2018-08-24 | 中国电力科学研究院有限公司 | A kind of analogue system for analog current mutual inductor short trouble |
| CN109001591A (en) * | 2018-06-19 | 2018-12-14 | 国网江苏省电力有限公司电力科学研究院 | A kind of 10kV power distribution network primary equipment intelligence fortune inspection engineering test platform |
| CN109001664A (en) * | 2018-06-15 | 2018-12-14 | 国网湖北省电力有限公司电力科学研究院 | A kind of transient state recording type fault detector waveform contrastive test method |
| EP3553541A1 (en) * | 2018-04-13 | 2019-10-16 | GridData e.K. | Device and method for locating earth faults in electrical distribution grids |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483643A (en) * | 2014-11-27 | 2015-04-01 | 华中科技大学 | Modeling method based on detection platform of fault indicator for physical simulation of power distribution network |
| CN104483643B (en) * | 2014-11-27 | 2017-05-10 | 华中科技大学 | Modeling method based on detection platform of fault indicator for physical simulation of power distribution network |
| CN108446441A (en) * | 2018-02-11 | 2018-08-24 | 中国电力科学研究院有限公司 | A kind of analogue system for analog current mutual inductor short trouble |
| EP3553541A1 (en) * | 2018-04-13 | 2019-10-16 | GridData e.K. | Device and method for locating earth faults in electrical distribution grids |
| CN109001664A (en) * | 2018-06-15 | 2018-12-14 | 国网湖北省电力有限公司电力科学研究院 | A kind of transient state recording type fault detector waveform contrastive test method |
| CN109001664B (en) * | 2018-06-15 | 2020-06-30 | 国网湖北省电力有限公司电力科学研究院 | Transient recording type fault indicator waveform comparison test method |
| CN109001591A (en) * | 2018-06-19 | 2018-12-14 | 国网江苏省电力有限公司电力科学研究院 | A kind of 10kV power distribution network primary equipment intelligence fortune inspection engineering test platform |
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Application publication date: 20141022 |