中文摘要：

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109dB，通道间相移小于0．12°。

英文摘要：

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.