电力系统保护与控制2011，Vol.39Issue(2)：98-101,124,5.
基于空载误强励灭磁对发电机过电压保护整定的研究
Research on generator over-voltage protection setting based on no-load fault forcing excitation
吴跨宇 1周平 2高春如 3杨涛1
作者信息
- 1. 浙江省电力试验研究院,浙江,杭州,310014
- 2. 浙江浙能嘉兴发电有限公司,浙江,平湖,314201
- 3. 望亭发电厂,江苏,苏州,215155
- 折叠
摘要
Abstract
This paper simulates the de-excitation process of self shunt excitation 300 MW and 600 MW turbine generators on no-load fault forcing excitation condition with different over-voltage protection setting in order to study different setting value's effect on the security of generator and its de-excitation circuit.According to the simulation, generator's maximum stator voltage, de-excitation current, resister's exhaust energy and de-excitation time would be reduced with smaller setting value.It is beneficial to the security of generator and its de-excitation circuit.After testifying that the smaller over voltage protection setting would not go against the V/Hz limit in AVR, over excitation protection and generator normally operation to demonstrate the feasibility of decreasing setting value, this paper puts forward to decrease the generator over-voltage protection setting values and subjoin an additional over-voltage protection specified for generator no-load condition.关键词
汽轮发电机/自并励励磁/空载误强励/过电压保护/过激磁/灭磁/整定Key words
turbine generator/ self shunt excitation/ no-load fault forcing excitation/ over-voltage protection/ over excitation/de-excitation/ setting分类
信息技术与安全科学引用本文复制引用
吴跨宇,周平,高春如,杨涛..基于空载误强励灭磁对发电机过电压保护整定的研究[J].电力系统保护与控制,2011,39(2):98-101,124,5.
