20Hz注入式100%定子接地保护监视电压低原因分析及改进措施  

The Cause and Solution of Low Watching Voltage of Siemens 100% Stator Ground Fault Protection with 20Hz Voltage Injection

作　　者：陈凤华[1] 吴昊 高迪军 Chen Fenghua;Wu Hao;Gao Dijun(Power Generation Company Huizhou Pumped Storage Power Station, Huizhou, Guangdong 516100;Power Generation Company Guangzhou Pumped Storage Power Station, Guangzhou 510900;Machinery Industry Information Institute SIEMENS Electric Power Automation Co., Ltd, Nanjing 211100)

机构地区：[1]调峰调频发电公司惠州蓄能水电厂,广东惠州516100 [2]调峰调频发电公司广州蓄能水电厂,广州510900 [3]西门子电力自动化有限公司,南京211100

出　　处：《电气技术》2017年第4期136-139,共4页Electrical Engineering

摘　　要：本文介绍了西门子20Hz注入式100%定子接地保护原理,针对三个方面:注入式保护接地变压器二次监视电压低的原因、对保护灵敏度的影响及其改进措施、调试方法,均作了详细地介绍。另外,本文也分析了在调试时接地电流角度补偿与传变电阻的整定方法。This paper introduces the principleof Siemens100%stator ground fault protection with20Hz voltage injection,mean while,it also gives the cause of low voltage on the secondary side of earthing transformer,the influence on protection sensitivity,as well as the improvement measure of raising voltage,the debugging method after improvement measure.In addition,the paper also analyzes the setting method of earth current angle compensation and transmission resistance when debugging.

关 键 词：100%定子接地保护 监视电压 接地变压器 传变电阻 

分 类 号：TV734[水利工程—水利水电工程]