摘要
阐述了一种新的发电机局部放电检测系统 (GDD-3H)在大型水轮发电机上的安装调试和测量 ,通过安装在中性点侧的双频传感器和两个噪音门通道 ,成功排除励磁脉冲和高压母线侧的干扰 。
Partial discharge measurements on in service generators are difficult because of the interference. Various sources of interference exist in power station such as thyristor pulses corona and other noise entering to HV terminals of generator from the busbars. This paper presents the installation, adjustment and measurements results of a new PD detector GDD 3 on one of the largest hydraulic power station. With two frequency bands sensors installed at the neutral and two noise gating channels, GDD 3 removes noise from thyristor exciters and the HV busbars and can assess more accurately the insulation condition of generator stator windings.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2000年第5期19-20,29,共3页
High Voltage Engineering
关键词
水轮发电机
局部放电
在线检测系统
partial discharge on line monitoring interference suppression
