CN103777124B - Based on the breakdown fault localization method of the GIS On-Site Testing of vibration-testing - Google Patents
Based on the breakdown fault localization method of the GIS On-Site Testing of vibration-testing Download PDFInfo
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- CN103777124B CN103777124B CN201410040706.0A CN201410040706A CN103777124B CN 103777124 B CN103777124 B CN 103777124B CN 201410040706 A CN201410040706 A CN 201410040706A CN 103777124 B CN103777124 B CN 103777124B
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Abstract
The present invention relates to a kind of breakdown fault localization method of the GIS On-Site Testing based on vibration-testing, GIS shell in tested scope arranges that multiple vibration transducer is monitored, gather vibration signal when GIS breakdown fault occurs, carry out localization of fault by the difference in magnitude between each measuring point signal of comparative analysis and mistiming.Compared with prior art, it is high that the present invention has measuring accuracy, realizes localization of fault by vibration-testing, avoids the trouble of large area strip inspection, thus effectively improve site operation progress, eliminates because large area is disintegrated the hidden danger of quality brought simultaneously.
Description
Technical field
The present invention relates to a kind of breakdown fault localization method of GIS On-Site Testing, especially relate to a kind of breakdown fault localization method of the GIS On-Site Testing based on vibration-testing.
Background technology
GIS (Cubicle Gas-Insulated Switchgear) is as a kind of fully closed electrical equipment, comprise multiple element and bus air chamber, according to relevant criterion requirement, after GIS scene completes installation, withstand voltage test should be carried out, with checkout facility manufacture, transport and installation quality.Once at withstand voltage middle generation breakdown fault, because GIS is fully closed, cannot determine that position occurs fault intuitively by the mode of eye-observation.And AC extra high voltage 1100kVGIS has scope is large, bus is long, air chamber is many feature, if there is no reliable breakdown fault localization method, certainly will to carry out large-area strip inspection, site operation progress can be affected on the one hand, recover again also can bring certain hidden danger of quality after carrying out strip inspection to multiple air chamber on the other hand.Therefore, in AC extra high voltage 1100kVGIS On-Site Testing process, adopt suitable technological means to be necessary as breakdown fault localization method.
Summary of the invention
Object of the present invention is exactly the breakdown fault localization method in order to provide a kind of GIS On-Site Testing based on vibration-testing.
Object of the present invention can be achieved through the following technical solutions:
A kind of breakdown fault localization method of the GIS On-Site Testing based on vibration-testing, it is characterized in that, GIS shell in tested scope arranges that multiple vibration transducer is monitored, gather vibration signal when GIS breakdown fault occurs, carry out localization of fault by the difference in magnitude between each measuring point signal of comparative analysis and mistiming.
Specifically comprise the following steps:
1) n is numbered to each position vibration transducer, wherein n=1,2......k;
2) obtain the test point m that vibration signal peak value is maximum, its vibration signal peak value is A
mMAX;
3) obtain the test point O that vibratory response occurs the earliest, and the crest location defining this test point is A
o, and be time zero t by moment definition corresponding for this crest location
o=0;
4) the absolute value delta t of each test point crest moment relative to the mistiming in O point crest moment is obtained
n, after sequence, obtain maximum time difference Δ t
fMAX,
5) Vibration propagation time relative value δ tn and the vibration amplitude relative value δ A of each test point is obtained
n, wherein δ t
n=Δ t
n/ Δ t
fMAX, δ A
n=A
n/ A
mMAX, wherein A
nfor the peak value of test point n;
6) the δ A of each test point is obtained
nxwith δ t
nxdifference X
n=δ A
nx-δ t
nx;
7) to X
nsort from big to small, two measuring point intervals of sequence front two are region, trouble spot.
Described each position vibration transducer can cover tested GIS.
Compared with prior art, it is high that the present invention has measuring accuracy, realizes localization of fault by vibration-testing, avoids the trouble of large area strip inspection, thus effectively improve site operation progress, eliminates because large area is disintegrated the hidden danger of quality brought simultaneously.
Accompanying drawing explanation
Vibration signal figure when Fig. 1 is GIS breakdown fault;
Fig. 2 is localization of fault process flow diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of breakdown fault localization method of the GIS On-Site Testing based on vibration-testing, GIS shell in tested scope arranges that multiple vibration transducer is monitored, gather vibration signal when GIS breakdown fault occurs, carry out localization of fault by the difference in magnitude between each measuring point signal of comparative analysis and mistiming.Described each position vibration transducer can cover tested GIS.
As shown in Figure 2, the present invention specifically comprises the following steps:
1) n is numbered to each position vibration transducer, wherein n=1,2......k;
2) obtain the test point m that vibration signal peak value is maximum, its vibration signal peak value is A
mMAX;
3) obtain the test point O that vibratory response occurs the earliest, and the crest location defining this test point is A
o, and be time zero t by moment definition corresponding for this crest location
o=0;
4) the absolute value delta t of each test point crest moment relative to the mistiming in O point crest moment is obtained
n, after sequence, obtain maximum time difference Δ t
fMAX,
5) the Vibration propagation time relative value δ t of each test point is obtained
nwith vibration amplitude relative value δ A
n, wherein δ t
n=Δ t
n/ Δ t
fMAX, δ A
n=A
n/ A
mMAX, wherein A
nfor the peak value of test point n;
6) the δ A of each test point is obtained
nxwith δ t
nxdifference X
n=δ A
nx-δ t
nx;
7) to X
nsort from big to small, two measuring point intervals of sequence front two are region, trouble spot.
Claims (2)
1. the breakdown fault localization method based on the GIS On-Site Testing of vibration-testing, it is characterized in that, GIS shell in tested scope arranges that multiple vibration transducer is monitored, gather vibration signal when GIS breakdown fault occurs, carry out localization of fault by the difference in magnitude between each measuring point signal of comparative analysis and mistiming;
Described localization method specifically comprises the following steps:
1) n is numbered to each position vibration transducer, wherein n=1,2 ... k;
2) obtain the test point m that vibration signal peak value is maximum, its vibration signal peak value is A
mMAX;
3) obtain the test point O that vibratory response occurs the earliest, and the crest location defining this test point is A
o, and be time zero t by moment definition corresponding for this crest location
o=0;
4) the absolute value delta t of each test point crest moment relative to the mistiming in O point crest moment is obtained
n, after sequence, obtain maximum time difference Δ t
fMAX;
5) the Vibration propagation time relative value δ t of each test point is obtained
nwith vibration amplitude relative value δ A
n, wherein δ t
n=Δ t
n/ Δ t
fMAX, δ A
n=A
n/ A
mMAX, wherein A
nfor the peak value of test point n;
6) the δ A of each test point is obtained
nxwith δ t
nxdifference X
n=δ A
nx-δ t
nx;
7) to X
nsort from big to small, two measuring point intervals of sequence front two are region, trouble spot.
2. the breakdown fault localization method of a kind of GIS On-Site Testing based on vibration-testing according to claim 1, it is characterized in that, described each position vibration transducer can cover tested GIS.
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| CN201410040706.0A CN103777124B (en) | 2014-01-27 | 2014-01-27 | Based on the breakdown fault localization method of the GIS On-Site Testing of vibration-testing |
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|---|---|---|---|
| CN201410040706.0A CN103777124B (en) | 2014-01-27 | 2014-01-27 | Based on the breakdown fault localization method of the GIS On-Site Testing of vibration-testing |
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| CN103777124A CN103777124A (en) | 2014-05-07 |
| CN103777124B true CN103777124B (en) | 2016-02-17 |
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| CN104020403A (en) * | 2014-06-20 | 2014-09-03 | 国家电网公司 | Diagnostic system for composite apparatus fault positioning |
| CN104698354A (en) * | 2015-03-13 | 2015-06-10 | 西安交通大学 | GIL (globalization, internationalization and localization) breakdown discharge positioning detecting system |
| CN104914360A (en) * | 2015-05-20 | 2015-09-16 | 朱继红 | Vibration monitoring device and vibration monitoring method for capacitor element breakdown |
| CN105910695A (en) * | 2016-04-14 | 2016-08-31 | 沈阳嘉越电力科技有限公司 | Detection system and method for GIS mechanical fault vibration |
| CN105974276A (en) * | 2016-04-25 | 2016-09-28 | 西安交通大学 | GIS interval delivery withstand voltage test breakdown point locating method |
| CN105954653B (en) * | 2016-04-26 | 2020-03-31 | 西安交通大学 | Method and system for locating breakdown point of GIS (gas insulated switchgear) field voltage withstand test |
| CN110261711A (en) * | 2019-08-06 | 2019-09-20 | 广东电网有限责任公司 | A kind of faulty insulator localization method of GIS multiple-factor joint degradation platform |
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| CN103777124A (en) | 2014-05-07 |
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