电瓷避雷器Issue(6)：138-147,10.DOI:10.16188/j.isa.1003-8337.2023.06.016
110kV交流避雷器整支大电流冲击耐受能力研究
High-Current Impulse Withstand Capability of 110 kV AC Arrester
王陆璐 1吴成成 1陈立 1万克 1左中秋1
作者信息
- 1. 中国电力科学研究院有限公司,武汉 430074
- 折叠
摘要
Abstract
In order to clarify the current status and the cause of the failure of the 4/10 μs high current im-pulse withstand of the 110 kV AC arrester,and to verify the equivalence of the whole arrester and its re-sistors as test samples,some suggestions on the evaluation rules of sampling test are put forward to im-prove the quality of the arrester connected to the grid.The author takes the porcelain-housed and poly-mer-housed arrester of"Tube design"and"Wrapped design"for 110 kV(66 kV)AC power system as the research object.Based on the comparison of the differences between the current national standards and the power industry standard,and test is conducted to study the high-current impulse withstand ca-pability of the whole arrester and its core element resistors.Comparing the difference in high current im-pulse withstand capability between the whole arresters of different structures and the arrester with its resis-tors.It is found that the high current impulse withstand capability of the whole arrester is not equivalent to the performance of its resistor.The high current impulse withstand capability of the arrester designed with structure A is more guaranteed than that designed with structure B(the same size as the resistor).The variation of electrical parameters of 110 kV(66 kV)AC arrester before and after the high current im-pulse withstand test are analyzed,which found that the main manifestation of high-current failure toler-ance is the power frequency reference voltage and residual voltage change rate of the test product exceed the standard after the impulse,and the failure of arrester caused by appearance damage is relatively small.For the sampling test of 110 kV(66 kV)AC arrester with high current impulse withstand capabili-ty,it is recommended to adopt the judgment rule of DL/T 815-2021 standard;It is suggested that the arrester of structure A can use the resistor or the whole arrester(SVU)as the test sample,and a higher quality rating can be given if the whole arrester test passed;It is recommended to use the whole arrester(SVU)as the test sample for the arrester of structure B.关键词
110kV交流避雷器/整支大电流冲击/试品等价性/抽检试验Key words
110 kV AC arrester/high-current impulse of the arrester/sample equivalence/sampling test引用本文复制引用
王陆璐,吴成成,陈立,万克,左中秋..110kV交流避雷器整支大电流冲击耐受能力研究[J].电瓷避雷器,2023,(6):138-147,10.
