摘要
LDC-2整流型低阻抗继电器用于具有偏移特性的凸极式水轮发电机组失磁保护.该保护常常发生因机端电压互感器(PT)二次断线(熔断器接触不良)或电流互感器(CT)二次极性接反而导致严重的停机事故,通过对现场事故案例的分析,提出了防止此例事故的安全技术措施.
LDC-2 rectifier type minimum impedance relay is used for loss of excitation of salient pole hydro-generator unit with offset characteristic. This protection would result in unit shutdown in case of terminal PT secondary break （fuse loose contact） or CT secondary polarity reverse. A living example is analysed and some safety measures are proposed in this paper.
出处
《沈阳工程学院学报（自然科学版）》
2013年第2期134-135,175,共3页
Journal of Shenyang Institute of Engineering:Natural Science
关键词
失磁保护
误动
分析
loss of excitation
misoperation
analysis
