| 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°。 |
| 关键词: 电能质量 间谐波 谐波分析 宽带测试 多通道 同步 |
| DOI： |
| 分类号: |
| 基金项目: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） |
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| Multi-channel parallel broadband inter-harmonic test |
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DING Weihong1, ZHAO Jianyang2,3
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1.Faculty of Electronic and Electrical Engineering，Huaiyin Institute of Technology，Huaian 223003，China;2.Faculty of Computer Engineering，Huaiyin Institute of Technology，Huaian 223003，China;3.College of Aerospace Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
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| Abstract: |
| 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-harmonics covering whole spectrum in one calculation，with the DR higher than 109dB and the phase shift between channels less than 0.12 degree. |
| Key words: power quality inter - harmonics harmonic analysis broadband test multi-channel synchronization |
