并行多通道间谐波宽带测试方法  

Multi-channel parallel broadband inter-harmonic test

作　　者：丁卫红[1] 赵建洋[2,3] 

机构地区：[1]淮阴工学院电子与电气学院,江苏淮安223003 [2]淮阴工学院计算机学院,江苏淮安223003 [3]南京航空航天大学航空宇航学院,江苏南京210016

出　　处：《电力自动化设备》2011年第10期126-130,共5页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(50575101);江苏省科技支撑资助项目(BE2009100)~~

摘　　要：针对电站等电力场所多点谐波动态检测的难点,提出基于多输入、多输出系统测试方法,对输入、输出频响进行复指数拟合,得到全频段的间谐波参数。该方法在研制的并行测试系统中应用,实现了主、从结构测试与分析系统,主站引擎软件作为主控平台协同控制各从站,实现从站的内部多通道同步、从站之间的脉冲同步和远程GPS同步。测试表明该方法能够在全频带范围一次计算出所有间谐波参数,动态范围高于109 dB,通道间相移小于0.12°。The test method based on multi-input and multi-output system is proposed for the multi-point dynamic inter-harmonic test,which carries out the complex exponential fitting for input/output frequency responses to obtain the inter-harmonic parameters covering whole spectrum. It is applied in a test and analysis system with master-slaver structure. As the master control platform,the master station engine software controls coordinately all slave stations to realize the multi-channel synchronization within a slave station,the pulse synchronization among slave stations and the remote GPS synchronization. It obtains all inter-harmonies covering whole spectrum in one calculation,with the DR higher than 109dB and the phase shift between channels less than 0.12 degree.

关 键 词：电能质量 间谐波 谐波分析 宽带测试 多通道 同步 

分 类 号：TM930[电气工程—电力电子与电力传动] TM911