电气技术2024，Vol.25Issue(11)：15-21,7.
换流阀冷却系统异步电动机高阻故障识别与定位
The stator high resistance fault identification and localization of asynchronous motors applied in valve cooling system
摘要
Abstract
Asynchronous motor is one of the important components of the main pump in the valve cooling system.Improving the level of fault identification and instantly locating the fault point are of great value for the valve cooling system.In this paper,a method of online detection of stator high resistance fault based on current unbalance degree is proposed by means of symmetric vector method.Specifically,this paper analyzes the index parameters to determine the fault phase and fault severity under the conditions of stator star connection and delta connection.Furthermore,by setting the voltage monitoring location reasonably,the fault detection range can be further reduced.Finally,the effectiveness of the proposed method is verified through simulation test and a case analysis.关键词
阀冷系统/主循环泵/异步电动机定子高阻故障/对称向量法/电流不平衡度Key words
valve cooling system/main pump/asynchronous motor stator high resistance fault/symmetrical vector method/current unbalance degree引用本文复制引用
董熙,江楠,张国华,高晟辅,刘东川..换流阀冷却系统异步电动机高阻故障识别与定位[J].电气技术,2024,25(11):15-21,7.基金项目
国家电网公司总部科技项目(5500-202249130A-1-1-ZN) （5500-202249130A-1-1-ZN）
