文章基本信息

标题：Influence of the Test Current on Dynamic Resistance Measurements of SF6 Circuit Breakers
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作者：Yufeng Lu ; Yi Su ; Zhaoting Liang 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：310
期号：4
页码：1-10
DOI：10.1088/1755-1315/310/4/042006
出版社：IOP Publishing
摘要：In order to study the influence of the test current on the dynamic resistance measurement of the SF6 circuit breaker with different erosion degrees, simulated erosion experiment was carried on 126 kV SF6 circuit breaker. The result shows, that the higher the test current is, the smaller the resistance of arcing contact when the circuit breaker is of any degree of erosion, but there is always no obvious link between the arcing contact travel and the test current. In addition, the dispersion of the test results decreases with the increase of the test current. However, when the erosion of the circuit breaker is very serious, the dispersion of results will be great regardless of the value of the test current. Therefore, considering the influence of test current on contact resistance, in order to obtain actualarcing contact resistance and to reduce the dispersion of test results considering the influence of test current on contact resistance, the larger dynamic resistance test current should be chosen as much as possible, and the dynamic resistance test must be carried on many times when contact erosion is extremely serious, so that the state of arcing contact can be obtained according to the distribution of test results.