CAUSE ANALYSIS OF MALFUNCTION CONCERNING ROTORS SINGLE POINT GROUNDING PROTECTION FOR GENERATORS[J]. Thermal power generation, 2003, (12): 69-70. DOI: 10.19666/j.rlfd.2003.12.023.
发电机转子一点接地保护误动原因分析
摘要
分析了神华神东大柳塔热电厂二期 4台发电机转子一点接地保护误动的原因
认为其主要是发电机大轴未真正接地所致。将发电机轴上安装的接轴电刷电气引线先经电阻接地
再接入保护装置
问题得以解决。
Abstract
The causes leading to malfunction concerning rotor’s single point grounding protection for four generators in the second - phase of Shenhua Dongdaliuta Thermal Power Plant have been analysed. It is considered that the main cause is the shaft of generators hasnt actually earthed. The leading wires of carbon brushes installed on the shaft and making contact with the shaft have been connected into the protectiion device after earthing firstly through resistance