东北电力技术2026，Vol.47Issue(1)：19-22,4.
35 kV光伏电站箱变高压熔断器慢熔故障分析及预防措施
Analysis and Preventive Measures for Slow Melting Fault of High Voltage Fuses in 35 kV Photovoltaic Power Station Box Transformers
王志强 1陈聪 1何天磊 2王晓剑 1李想1
作者信息
- 1. 中电华创(苏州)电力技术研究有限公司,江苏 苏州 215123
- 2. 中电华创电力技术研究有限公司,上海 200086
- 折叠
摘要
Abstract
The high-voltage current-limiting fuse is an important electrical equipment to protect electrical equipment from current over-load and short-circuit current damage.A 35 kV photovoltaic power station box transformer C-phase high-voltage current-limiting fuse occurs a slow melting fault,resulting in zero-sequence overcurrent I.section protection action,and finally causes the collector line switch to trip.According to the on-site fault recording diagram,the dismantling inspection of the box transformer manufacturer and the breakdown position of the fuse cylinder.The analysis finds that the screw loosening at the crossbar connection of the high-voltage side of the box transformer leads to the temperature of the C-phase high-voltage fuse to rise,and then the slow melting fault.In view of this incident,it gradually analyzes the cause of the failure and proposes the corresponding preventive measures,which has certain refer-ence value for improving the operation reliability of the box transformer of the photovoltaic power station in the future.关键词
光伏发电用箱变/故障录波/熔断器/慢熔Key words
box transformer for photovoltaic power generation/fault recording/fuse/slow melting分类
信息技术与安全科学引用本文复制引用
王志强,陈聪,何天磊,王晓剑,李想..35 kV光伏电站箱变高压熔断器慢熔故障分析及预防措施[J].东北电力技术,2026,47(1):19-22,4.
