基于模式识别和噪声分离的局部放电监测应用  

The Selection and Application of On-line Partial Discharge System on Ludila Hydro Power Plant

作　　者：宋华 SONG Hua(Ludila of China Huadian Corporation Co.Ltd.,Kunming 650101,China)

机构地区：[1]云南华电鲁地拉水电有限公司,云南省昆明市650101

出　　处：《水电与抽水蓄能》2024年第6期81-86,共6页Hydropower and Pumped Storage

摘　　要：发电机局部放电在线监测技术是掌握运行时定子绝缘状况的重要手段。在线监测的难点在于如何有效地获取真正的定子绝缘产生的局部放电,最大限度地降低和抑制定子外部设备在机组运行时产生的干扰和噪声,特介绍鲁地拉公司在升级发电机局部放电在线监测技术过程中的应用经验。实施中,依据国家能源局2023年25项反措技术指导意见,遵循模式分析和噪声分离两大设计要求,详细调研和了解了市场上众多产品和技术,最终选择了GuardII Prime系统,优化和改进了安装方案。通过对改造后实际应用数据进行分析,表明GuardII Prime系统符合模式分析和噪声分离技术要求,可真实反映定子绝缘放电状况,可为生产运行和检修提供技术支撑和指导,也可为其他水电厂改造提供借鉴经验。On-line PD(partial discharge)technology is important to learn about the insulation status of generator stator.The difficult is how to get the absolute partial discharge of stator and reduce the disturbance and noise outside of stator.This article introduce the selection and the application of Ludila LTD.We base on the instruction of National Energy Administration’s guide,using pattern interpretation and noise separation technology.We selected the GuardII Prime system after more learning.The application was successful after the new installation.The GuardII Prime system can show machine PD and bus PD usage the directional noise separation method.We can master the reason of PD through pattern interpretation method.It is helpful for other power-plant.

关 键 词：局部放电 模式识别 噪声分离 在线监测 

分 类 号：TM312[电气工程—电机]