变压器油介损在线监测方法的研究  

Study on Transformer Oil Dielectric Loss Online Monitoring Method

作　　者：苏星华 陈铭 黎园媛 SU Xinghua;CHEN Ming;LI Yuanyuan(Electric Power Research Institute of Guangxi Power Grid Co.,Ltd.,Guangxi Nanning 530023,China;Guangxi University Xingjian College of Science and Liberal Arts,Guangxi Nanning,530021,China)

机构地区：[1]广西电网有限责任公司电力科学研究院,广西南宁530023 [2]广西大学行健文理学院,广西南宁530021

出　　处：《广西电力》2018年第4期41-44,共4页Guangxi Electric Power

摘　　要：为实现变压器故障溶解气体产生前的早期状态监测,提出一种适用于变压器油介质损耗在线监测的改进过零比较测量方法。通过分析研究该方法在连续监测应用中会出现的零点漂移、脉冲计数误差和谐波影响,提出信号改进处理办法。通过系统设计,提出适用于现场应用的软件、硬件结构模型。最后,根据油介损测试仿真与实验情况,验证了所提出的变压器油介损在线监测方法准确、快速、稳定,具有一定的实用性和推广价值。In order to realize the early state monitoring of transformer fault before dissolved gas generation,a modified zero crossing comparison measurement method which is suitable for on-line monitoring of transformer oil consumption is proposed.By analyzing and studying the zero drift,the pulse counting error and the harmonic influence which may appear in the application of the method,the improved signal processing method is proposed.By system design,software and hardware structure models which are suitable for field application are proposed.It is testified by oil dielectric loss simulation and test that the proposed transformer oil dielectric loss online monitoring method is accurate,fast and stable which has a certain practicality and popularization value.

关 键 词：变压器 介质损耗 在线监测 

分 类 号：TM407[电气工程—电器]