CN104459375A - Method for identifying transient electromagnetic disturbance of secondary device of gas insulation substation - Google Patents
Method for identifying transient electromagnetic disturbance of secondary device of gas insulation substation Download PDFInfo
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Abstract
The invention discloses a method for identifying transient electromagnetic disturbance of a secondary device of a gas insulation substation, and belongs to the field of electromagnetic compatibility of the secondary device of the substation. The method includes the steps of collecting electromagnetic waveform data caused by switching operation of the secondary device of the substation, conducting statistic analysis, extracting waveform characteristic parameters measured and recorded on the secondary device of the ultra-high voltage GIS substation, comparing the waveform characteristic parameters with definition waveform characteristic parameters, and accordingly judging that the transient electromagnetic disturbance occurs in the measurement and recording period. According to the method, a large number of tests are performed, statistic analysis is carried out on the data, the typical waveform parameters are obtained, and the actual vary-fast transient electromagnetic disturbance occurring in the ultra-high voltage substation can be accurately judged; the method is of great guide significance in monitoring and protection of the ultra-high voltage secondary device.
Description
Technical field
The invention belongs to substation secondary device field of electromagnetic compatibility, the recognition methods of particularly a kind of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking.
Background technology
It is short that the Transient Electromagnetic harassing and wrecking that GIS (gas-insulated) switching operation in substation causes have the rise time, and the feature that frequency span is wide, thus also referred to as very fast transient electromagnetic disturbance.In substation secondary device field of electromagnetic compatibility, very fast transient electromagnetic disturbance is the most serious to the threat of secondary device.China's power network development has arrived the extra-high voltage stage, and rule of thumb, the electromagnetic compatibility problem more in voltage levels will be more severe.The electromagnetic compatibility problem of research extra-high voltage GIS transformer station, especially gets the waveform character of very fast transient electromagnetic disturbance clear, has exigence.But the number of times carrying out switching manipulation in the GIS transformer station of reality is limited, getable data bulk is restricted, the waveform character of summary does not possess and well represents meaning.In order to solve this point, we have carried out lot of experiments on extra-high voltage GIS real model experiment platform, statistical study is carried out to data, has obtained typical waveform parameter, proposed the method for waveform identification of extra-high voltage GIS substation secondary device very fast transient electromagnetic disturbance.This, to the monitoring of extra-high voltage secondary device and protection, has great importance.
Summary of the invention
The object of this invention is to provide the recognition methods of a kind of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking, it is characterized in that, by the electromagnetic waveforms data that the switching manipulation gathering substation secondary device causes, carry out statistical study, extract waveform feature parameter extra-high voltage GIS substation secondary device being surveyed record, with the comparison of definition waveform feature parameter, thus there occurs Transient Electromagnetic harassing and wrecking during being judged to be to survey record; Comprise the steps:
1) the full-scale true type simulated test loop of test extra-high voltage GIS (being illustrated in figure 1 the full-scale true type simulated test loop of extra-high voltage GIS) with branch bar variable-length, multiple pattern disconnector test product, Multipoint synchronous measuring system and multiple test function is selected;
2) lot of experiments carried out on the full-scale true type simulated test loop of extra-high voltage GIS, gathers Wave data; The waveform of described GIS substation secondary device Transient Electromagnetic harassing and wrecking specifically comprises following characteristics parameter, and it is as follows to define waveform feature parameter: the grand pulse peak peak value of a.: the difference of interference waveform maxima and minima; B. grand pulse peak-peak: in interference waveform, maxima and minima compares the larger value of absolute value; C. the grand duration of pulse: first scarcely perceptible pulse is flushed to the time of last micropulse from interference waveform; D. micropulse number: the number of whole micropulse in interference waveform; E. micropulse interval time: the mistiming between adjacent two micropulses; F. the micropulse duration: the time from pulse waveform rises to being substantially submerged in neighbourhood noise; G. the micropulse rise time: the time of micropulse peak-peak place peak value from 10% to 90%; Above characteristic parameter can be unique regulation extra-high voltage GIS switching operation in substation Transient Electromagnetic harassing and wrecking waveform that secondary device port is produced;
3) by step 2) Wave data that gathers carries out statistical study, extract waveform feature parameter extra-high voltage GIS substation secondary device being surveyed record, if parameters all meets step 2) described in Transient Electromagnetic harassing and wrecking waveform characteristic parameter, then can be judged to be survey record during there occurs Transient Electromagnetic harassing and wrecking.
The full-scale true type simulated test loop of described extra-high voltage GIS is arranged according to the electrical secondary system mode of connection of actual GIS transformer station completely, and the Wave data obtained has and represents meaning.
Because different action types and different routes of transmission are divided into, combined floodgate common mode is harassed, separating brake common mode is harassed, combined floodgate differential mode is harassed and separating brake differential mode harassing and wrecking Four types in the Transient Electromagnetic harassing and wrecking that actual GIS switching operation in substation on described high pressure GIS substation secondary device causes, and its parameter value has larger difference.
The characteristic feature parameter value of described combined floodgate common mode harassing and wrecking is: the micropulse number of grand duration of pulse 116ms, 8kV is 2, and micropulse interval time is 4.6ms, and the micropulse duration is 5.8us, and the micropulse rise time is 43.8ns; The micropulse number of 4kV is 2, and micropulse interval time is 3.1ms, and the micropulse duration is 4.7us, and the micropulse rise time is 47.8ns; The micropulse number of 2kV is 4, and micropulse interval time is 1.8ms, and the micropulse duration is 3.5us, and the micropulse rise time is 43.7ns; The micropulse number of 1kV is 8, and micropulse interval time is 0.7ms, and the micropulse duration is 2.5us, and the micropulse rise time is 44.1ns; The micropulse number of 0.5kV is 232, and micropulse interval time is 0.4ms, and the micropulse duration is 1.7us, and the micropulse rise time is 38.2ns.The pulse train of different disturbance voltage grade is as follows for interval time: 8kV micropulse group and 4kV micropulse group are 5.5ms interval time; 4kV micropulse group and 2kV micropulse group are 4.0ms interval time; 2kV micropulse group and 1kV micropulse group are 3.5ms interval time; 1kV micropulse group and 0.5kV micropulse group are 1.7ms interval time.
The characteristic feature parameter value of described separating brake common mode harassing and wrecking is: the micropulse number of grand duration of pulse 227ms, 8kV is 2, and micropulse interval time is 9.7ms, and the micropulse duration is 8.5us, and the micropulse rise time is 53.2ns; The micropulse number of 4kV is 3, and micropulse interval time is 4.7ms, and the micropulse duration is 5.5us, and the micropulse rise time is 45.9ns; The micropulse number of 2kV is 7, and micropulse interval time is 1.8ms, and the micropulse duration is 3.9us, and the micropulse rise time is 45.2ns; The micropulse number of 1kV is 12, and micropulse interval time is 1.5ms, and the micropulse duration is 2.8us, and the micropulse rise time is 48.4ns; The micropulse number of 0.5kV is 399, and micropulse interval time is 0.4ms, and the micropulse duration is 1.9us, and the micropulse rise time is 48.1ns.
The characteristic feature parameter value of described combined floodgate differential mode harassing and wrecking is: the micropulse number of grand duration of pulse 133ms, 0.5kV is 76, and micropulse interval time is 2.6ms, and the micropulse duration is 0.6us, and the micropulse rise time is 18.4ns.
The characteristic feature parameter value of described separating brake differential mode harassing and wrecking is: the micropulse number of grand duration of pulse 345ms, 0.5kV is 79, and micropulse interval time is 6.4ms, and the micropulse duration is 1.0us, and the micropulse rise time is 33.5ns.
The pulse train of described different disturbance voltage grade is as follows for interval time: 8kV micropulse group and 4kV micropulse group are 11.9ms interval time; 4kV micropulse group and 2kV micropulse group are 7.4ms interval time; 2kV micropulse group and 1kV micropulse group are 4.7ms interval time; 1kV micropulse group and 0.5kV micropulse group are 3.2ms interval time.
The invention has the beneficial effects as follows that the present invention has carried out lot of experiments on extra-high voltage GIS real model experiment platform, statistical study has been carried out to data, has obtained typical waveform parameter, accurately can judge the very fast transient electromagnetic disturbance that actual ultra-high voltage transformer station occurs; The method for waveform identification of the extra-high voltage GIS substation secondary device very fast transient electromagnetic disturbance proposed, to the monitoring of extra-high voltage secondary device and protection, has great importance.
Accompanying drawing explanation
Fig. 1 is the full-scale true type simulated test loop of extra-high voltage GIS.
Fig. 2 is the waveform schematic diagram of typical combined floodgate common mode harassing and wrecking.
Fig. 3 is the waveform schematic diagram of typical separating brake common mode harassing and wrecking.
Fig. 4 is the waveform schematic diagram of typical combined floodgate differential mode harassing and wrecking.
Fig. 5 is the waveform schematic diagram of typical separating brake differential mode harassing and wrecking.
Embodiment
The invention provides the recognition methods of a kind of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking, be explained below in conjunction with accompanying drawing.
The recognition methods of described extra-high voltage GIS generation Transient Electromagnetic harassing and wrecking, by the electromagnetic waveforms data that the switching manipulation gathering substation secondary device causes, carry out statistical study, extract waveform feature parameter extra-high voltage GIS substation secondary device being surveyed record, with the comparison of definition waveform feature parameter, thus there occurs Transient Electromagnetic harassing and wrecking during being judged to be to survey record; Comprise the steps:
1) the full-scale true type simulated test loop of test extra-high voltage GIS (being illustrated in figure 1 the full-scale true type simulated test loop of extra-high voltage GIS) with branch bar variable-length, multiple pattern disconnector test product, Multipoint synchronous measuring system and multiple test function is selected;
2) lot of experiments carried out on the full-scale true type simulated test loop of extra-high voltage GIS, gathers Wave data; The waveform of described GIS substation secondary device Transient Electromagnetic harassing and wrecking specifically comprises following characteristics parameter, and it is as follows to define waveform feature parameter: the grand pulse peak peak value of a.: the difference of interference waveform maxima and minima; B. grand pulse peak-peak: in interference waveform, maxima and minima compares the larger value of absolute value; C. the grand duration of pulse: first scarcely perceptible pulse is flushed to the time of last micropulse from interference waveform; D. micropulse number: the number of whole micropulse in interference waveform; E. micropulse interval time: the mistiming between adjacent two micropulses; F. the micropulse duration: the time from pulse waveform rises to being substantially submerged in neighbourhood noise; G. the micropulse rise time: the time of micropulse peak-peak place peak value from 10% to 90%; Above characteristic parameter can be unique regulation extra-high voltage GIS switching operation in substation Transient Electromagnetic harassing and wrecking waveform that secondary device port is produced;
3) by step 2) Wave data that gathers carries out statistical study, extract waveform feature parameter extra-high voltage GIS substation secondary device being surveyed record, if parameters all meets step 2) described in Transient Electromagnetic harassing and wrecking waveform characteristic parameter, then can be judged to be survey record during there occurs Transient Electromagnetic harassing and wrecking.
The full-scale true type simulated test loop of described extra-high voltage GIS is arranged according to the electrical secondary system mode of connection of actual GIS transformer station completely, and the Wave data obtained has and represents meaning.
Because different action types and different routes of transmission are divided into, combined floodgate common mode is harassed, separating brake common mode is harassed, combined floodgate differential mode is harassed and separating brake differential mode harassing and wrecking Four types in the Transient Electromagnetic harassing and wrecking that actual GIS switching operation in substation on described high pressure GIS substation secondary device causes, and its parameter value has larger difference.
Figure 2 shows that the waveform schematic diagram that typical combined floodgate common mode is harassed, the characteristic feature parameter value of its combined floodgate common mode harassing and wrecking is: the micropulse number of grand duration of pulse 116ms, 8kV is 2, and micropulse interval time is 4.6ms, the micropulse duration is 5.8us, and the micropulse rise time is 43.8ns; The micropulse number of 4kV is 2, and micropulse interval time is 3.1ms, and the micropulse duration is 4.7us, and the micropulse rise time is 47.8ns; The micropulse number of 2kV is 4, and micropulse interval time is 1.8ms, and the micropulse duration is 3.5us, and the micropulse rise time is 43.7ns; The micropulse number of 1kV is 8, and micropulse interval time is 0.7ms, and the micropulse duration is 2.5us, and the micropulse rise time is 44.1ns; The micropulse number of 0.5kV is 232, and micropulse interval time is 0.4ms, and the micropulse duration is 1.7us, and the micropulse rise time is 38.2ns.The pulse train of different disturbance voltage grade is as follows for interval time: 8kV micropulse group and 4kV micropulse group are 5.5ms interval time; 4kV micropulse group and 2kV micropulse group are 4.0ms interval time; 2kV micropulse group and 1kV micropulse group are 3.5ms interval time; 1kV micropulse group and 0.5kV micropulse group are 1.7ms interval time.
Figure 3 shows that the waveform schematic diagram that typical separating brake common mode is harassed, the characteristic feature parameter value of its separating brake common mode harassing and wrecking is: the micropulse number of grand duration of pulse 227ms, 8kV is 2, and micropulse interval time is 9.7ms, the micropulse duration is 8.5us, and the micropulse rise time is 53.2ns; The micropulse number of 4kV is 3, and micropulse interval time is 4.7ms, and the micropulse duration is 5.5us, and the micropulse rise time is 45.9ns; The micropulse number of 2kV is 7, and micropulse interval time is 1.8ms, and the micropulse duration is 3.9us, and the micropulse rise time is 45.2ns; The micropulse number of 1kV is 12, and micropulse interval time is 1.5ms, and the micropulse duration is 2.8us, and the micropulse rise time is 48.4ns; The micropulse number of 0.5kV is 399, and micropulse interval time is 0.4ms, and the micropulse duration is 1.9us, and the micropulse rise time is 48.1ns.
Figure 4 shows that the waveform schematic diagram that typical combined floodgate differential mode is harassed, the characteristic feature parameter value of its combined floodgate differential mode harassing and wrecking is: grand duration of pulse 133ms, the micropulse number of 0.5kV is 76, micropulse interval time is 2.6ms, the micropulse duration is 0.6us, and the micropulse rise time is 18.4ns.
Figure 5 shows that the waveform schematic diagram that typical separating brake differential mode is harassed, the characteristic feature parameter value of its separating brake differential mode harassing and wrecking is: grand duration of pulse 345ms, the micropulse number of 0.5kV is 79, micropulse interval time is 6.4ms, the micropulse duration is 1.0us, and the micropulse rise time is 33.5ns.
The pulse train of described different disturbance voltage grade is as follows for interval time: 8kV micropulse group and 4kV micropulse group are 11.9ms interval time; 4kV micropulse group and 2kV micropulse group are 7.4ms interval time; 2kV micropulse group and 1kV micropulse group are 4.7ms interval time; 1kV micropulse group and 0.5kV micropulse group are 3.2ms interval time.
The present invention has carried out lot of experiments on extra-high voltage GIS real model experiment platform, has carried out statistical study to data, obtains typical waveform parameter, accurately can judge the very fast transient electromagnetic disturbance that actual ultra-high voltage transformer station occurs.
Claims (7)
1. the recognition methods of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking, it is characterized in that, by the electromagnetic waveforms data that the switching manipulation gathering extra-high voltage gas insulated transformer substation secondary device causes, carry out statistical study, extract waveform feature parameter gas insulated transformer substation secondary device being surveyed record, with the comparison of definition waveform feature parameter, thus there occurs Transient Electromagnetic harassing and wrecking during being judged to be to survey record; Comprise the steps:
1) the full-scale true type simulated test loop of test extra-high voltage GIS (being illustrated in figure 1 the full-scale true type simulated test loop of extra-high voltage GIS) with branch bar variable-length, multiple pattern disconnector test product, Multipoint synchronous measuring system and multiple test function is selected;
2) lot of experiments carried out on the full-scale true type simulated test loop of extra-high voltage GIS, gathers Wave data; The waveform of described GIS substation secondary device Transient Electromagnetic harassing and wrecking specifically comprises following characteristics parameter, and it is as follows to define waveform feature parameter: the grand pulse peak peak value of a.: the difference of interference waveform maxima and minima; B. grand pulse peak-peak: in interference waveform, maxima and minima compares the larger value of absolute value; C. the grand duration of pulse: first scarcely perceptible pulse is flushed to the time of last micropulse from interference waveform; D. micropulse number: the number of whole micropulse in interference waveform; E. micropulse interval time: the mistiming between adjacent two micropulses; F. the micropulse duration: the time from pulse waveform rises to being substantially submerged in neighbourhood noise; G. the micropulse rise time: the time of micropulse peak-peak place peak value from 10% to 90%; Above characteristic parameter can be unique regulation extra-high voltage GIS switching operation in substation Transient Electromagnetic harassing and wrecking waveform that secondary device port is produced;
3) by step 2) Wave data that gathers carries out statistical study, extract waveform feature parameter extra-high voltage GIS substation secondary device being surveyed record, if parameters all meets step 2) described in Transient Electromagnetic harassing and wrecking waveform characteristic parameter, then can be judged to be survey record during there occurs Transient Electromagnetic harassing and wrecking.
2. the recognition methods of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking according to claim 1, it is characterized in that, the full-scale true type simulated test loop of described extra-high voltage GIS is arranged according to the electrical secondary system mode of connection of actual GIS transformer station completely, and the Wave data obtained has and represents meaning.
3. the recognition methods of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking according to claim 1, it is characterized in that, because different action types and different routes of transmission are divided into, combined floodgate common mode is harassed, separating brake common mode is harassed, combined floodgate differential mode is harassed and separating brake differential mode harassing and wrecking Four types in the Transient Electromagnetic harassing and wrecking that actual GIS switching operation in substation on described high pressure GIS substation secondary device causes, and its parameter value has larger difference.
4. the recognition methods of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking according to claim 3, it is characterized in that, the characteristic feature parameter value of described combined floodgate common mode harassing and wrecking is: grand duration of pulse 116ms, the micropulse number of 8kV is 2, micropulse interval time is 4.6ms, the micropulse duration is 5.8us, and the micropulse rise time is 43.8ns; The micropulse number of 4kV is 2, and micropulse interval time is 3.1ms, and the micropulse duration is 4.7us, and the micropulse rise time is 47.8ns; The micropulse number of 2kV is 4, and micropulse interval time is 1.8ms, and the micropulse duration is 3.5us, and the micropulse rise time is 43.7ns; The micropulse number of 1kV is 8, and micropulse interval time is 0.7ms, and the micropulse duration is 2.5us, and the micropulse rise time is 44.1ns; The micropulse number of 0.5kV is 232, and micropulse interval time is 0.4ms, and the micropulse duration is 1.7us, and the micropulse rise time is 38.2ns; Wherein, the pulse train of different disturbance voltage grade is as follows for interval time: 8kV micropulse group and 4kV micropulse group are 5.5ms interval time; 4kV micropulse group and 2kV micropulse group are 4.0ms interval time; 2kV micropulse group and 1kV micropulse group are 3.5ms interval time; 1kV micropulse group and 0.5kV micropulse group are 1.7ms interval time.
5. the recognition methods of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking according to claim 3, it is characterized in that, the characteristic feature parameter value of described separating brake common mode harassing and wrecking is: grand duration of pulse 227ms, the micropulse number of 8kV is 2, micropulse interval time is 9.7ms, the micropulse duration is 8.5us, and the micropulse rise time is 53.2ns; The micropulse number of 4kV is 3, and micropulse interval time is 4.7ms, and the micropulse duration is 5.5us, and the micropulse rise time is 45.9ns; The micropulse number of 2kV is 7, and micropulse interval time is 1.8ms, and the micropulse duration is 3.9us, and the micropulse rise time is 45.2ns; The micropulse number of 1kV is 12, and micropulse interval time is 1.5ms, and the micropulse duration is 2.8us, and the micropulse rise time is 48.4ns; The micropulse number of 0.5kV is 399, and micropulse interval time is 0.4ms, and the micropulse duration is 1.9us, and the micropulse rise time is 48.1ns.
6. the recognition methods of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking according to claim 3, it is characterized in that, the characteristic feature parameter value of described combined floodgate differential mode harassing and wrecking is: grand duration of pulse 133ms, the micropulse number of 0.5kV is 76, micropulse interval time is 2.6ms, the micropulse duration is 0.6us, and the micropulse rise time is 18.4ns; Wherein, the pulse train of different disturbance voltage grade is as follows for interval time: 8kV micropulse group and 4kV micropulse group are 11.9ms interval time; 4kV micropulse group and 2kV micropulse group are 7.4ms interval time; 2kV micropulse group and 1kV micropulse group are 4.7ms interval time; 1kV micropulse group and 0.5kV micropulse group are 3.2ms interval time.
7. the recognition methods of gas insulated transformer substation secondary device generation Transient Electromagnetic harassing and wrecking according to claim 3, it is characterized in that, the characteristic feature parameter value of described separating brake differential mode harassing and wrecking is: grand duration of pulse 345ms, the micropulse number of 0.5kV is 79, micropulse interval time is 6.4ms, the micropulse duration is 1.0us, and the micropulse rise time is 33.5ns.
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| CN106680549A (en) * | 2016-12-29 | 2017-05-17 | 国家电网公司 | GIS transient simulation electromagnetic interference source |
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| CN110749787A (en) * | 2019-09-24 | 2020-02-04 | 清华大学 | Electromagnetic disturbance testing method for direct-current power distribution transformation system |
| CN111551812A (en) * | 2020-05-29 | 2020-08-18 | 哈尔滨理工大学 | Voltage wave characteristic parameter extraction method based on tensor multi-modal algorithm |
| CN116449077A (en) * | 2023-04-23 | 2023-07-18 | 国网江苏省电力有限公司 | Method for performing time-frequency analysis on PT secondary side disturbance voltage based on Wigner-Ville distribution algorithm |
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| CN104459375B (en) | 2017-11-28 |
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