高压电器Issue(12)：190-195,6.DOI:10.13296/j.1001-1609.hva.2015.12.033
500 kV变压器局放试验故障分析和处理
Fault Analysis and Treatment of Partial Discharge in 500 kV Transformer
彭非 1程林 2房体友 1吴义华 2詹浩3
作者信息
- 1. 华中科技大学电气与电子工程学院，武汉 430074
- 2. 国网电力科学研究院武汉南瑞有限责任公司，武汉 430074
- 3. 国网电力科学研究院武汉南瑞有限责任公司，武汉 430074
- 折叠
摘要
Abstract
Partial discharge of a 500 kV power transformer seriously exceed under 680 kV in routine ACSD test. After the accident, phased oil sampling analysis is taken to the transformer, the diagnostic tests are carried out after check wiring and test equipment. The oil sample test and analysis results indicated the fault of transformer is internal fault. Subsequently , the high-voltage head hanging core examination reveals the outermost insulation and regulated lead insulation wood screws and other parts have traces of discharge. Through the discharge site and the surrounding electric field simulation analysis , clear the discharge path, combined with experimental phenomena, determines that the failure is caused by a design flaw of the transformer and low dielectric strength of the insulation member caused. The corresponding maintenance treatment program is proposed. The accident analysis and processing programs can provide proposals for improving the follow-up of power transformer design and production process.关键词
变压器/短时感应耐压试验/局部放电/螺栓Key words
transformer/ACSD/partial discharge/bolt引用本文复制引用
彭非,程林,房体友,吴义华,詹浩..500 kV变压器局放试验故障分析和处理[J].高压电器,2015,(12):190-195,6.
