基于反推算法的暂态过电压监测技术及其仿真验证  

On-line Monitoring Technology of Transient Overvoltage Based on Inversion Algorithm and Its Simulation Verification

作　　者：金珩[1] 司文荣[1] 

机构地区：[1]华东电力试验研究院有限公司,上海200437

出　　处：《华东电力》2011年第8期1266-1270,共5页East China Electric Power

基　　金：华东电网有限公司科技项目(20103305312C091)~~

摘　　要：建立了基于监测系统传递函数、快速傅立叶变换(FFT)和逆变换(IFFT)的反推算法,实现了使用监测电压或电流信号反推暂态过电压波形信号,用于研制暂态过电压波形在线监测系统。针对标准及带振荡过冲的操作电压波形和雷电电压波形,建立不同分压方式的仿真模型以模拟实际工况下监测系统的传递函数,对反推算法进行了输入输出验证、传递函数验证和交叉验证。The inversion algorithm（IA） is established with FFT and IFFT algorithms based on transfer function of on-line monitoring system,which will be used to develop a novel transient overvoltage measurement system.It makes feasible to obtain accurate transient overvoltage signals with the IA and measured voltage or current signals.And according to standard switching and lightning impulse waveshapes with overshoot or oscillations,some transfer functions of different voltage-dividing systems are set up to verify the IA,including input/output verification,transfer function verification and cross verification,all of which shows a good result.

关 键 词：暂态过电压 在线监测 反推算法 仿真验证 

分 类 号：TM835[电气工程—高电压与绝缘技术]