交流不接地系统在发电机机组控制回路的使用实践  

Application Practice of AC Non-grounding System in the Control Loop of Generator Unit

作　　者：常新海[1] 闫占智 曹强[1] CHANG Xinhai;YAN Zhanzhi;CAO Qiang(The Energy Center of Jiuquan Iron ＆ Steel Group,Jiayuguan,Gansu 735100,China)

机构地区：[1]酒钢(集团)公司能源中心,甘肃嘉峪关735100

出　　处：《冶金动力》2018年第8期10-11,14,共3页Metallurgical Power

摘　　要：探讨了可靠性要求高的复杂控制回路采用交流局部不接地系统,利用不接地系统可以连续供电的特点在发生一点接地时可以有计划地停电处理异常接地事件,避免因接地短路造成跳闸导致经济损失。对电厂工程设计单位、设备成套单位及生产运行单位具有借鉴和推广作用。This paper discusses the characteristics of the complex control loop using AC local non-grounding system with high reliability, which can perform scheduled power outage at the events of single-point grounding by utilizing the capacity of continuous power supply of the non-grounding system to treat the abnormal grounding fault, avoiding economic loss caused by direct tripping due to grounding short circuit. The paper provides some reference and promotion effects for engineering design and equipment units of power projects.

关 键 词：交流不接地 控制回路 改进方案 

分 类 号：TM862[电气工程—高电压与绝缘技术]