一种变频器谐波量测终端优化定址方法及其算例分析  

An Optimized Addressing Method and Example Analysis for Harmonic Measuring Terminals of Frequency Converters

作　　者：曹雨茜 CAO Yu-qian(College of Information and Electronic Technology,Jiamusi University,Jiamusi 144007 China)

机构地区：[1]佳木斯大学信息电子技术学院,黑龙江佳木斯144007

出　　处：《自动化技术与应用》2020年第3期170-173,共4页Techniques of Automation and Applications

摘　　要：为了提高谐波在线监测系统的电网谐波分布特征,本文结合逻辑判断方法和量测配置优化方法,提出了一种变频器谐波量测终端优化定址方法。算例分析得到:在量测装置数4时,系统达到的最大可观测度为0.881146,同时得到的量测冗余度都是0。在量测装置数等于5的情况下,系统满足完全可观布点的方案数量为6,不过存在冗余度方面的差异性,应选择具有最大冗余度的方案,包括方案Ⅰ和Ⅲ。在量测装置等于5的情况下,以表2的方案Ⅰ作为谐波量测装置的方案来完成谐波状态的估计处理,本系统实现了完全可观的状态,并达到了很高的精度。In order to improve the harmonic distribution characteristics of the on-line harmonic monitoring system, this paper proposes an optimal addressing method of frequency converter harmonic measuring terminal based on the logic judgment method and measurement configuration optimization method. An example shows that when the number of measuring devices is4, the maximum observable measure reached by the system is 0.881146, and the measured redundancy is 0. Under the condition of the measurement device number is equal to 5, the system meets completely the stationing of considerable number is 6, but difference exist redundancy, should choose to have the biggest redundancy scheme, including scheme Ⅰ and Ⅲ.Under the condition of the measurement device is equal to 5, with table 2 scheme Ⅰ as harmonic measuring device scheme to complete harmonic state estimation processing, this system realizes the considerable state completely, and achieve a high precision.

关 键 词：配电网 谐波在线监测系统 可观测度 冗余度 

分 类 号：TM73[电气工程—电力系统及自动化]