企业级配电网络谐波计算面临的问题和解决方案

Issues and Solutions of Harmonic Computation in Enterprise Distribution Network

企业电网中由于谐波污染的存在,使其供电效率、质量及安全都受到影响。对于新建工程的电网,如采用估算方法,不能准确计算电网谐波量和精准设计滤波系统。应用现有的ETAP软件(美国OTI 公司研发的电气系统仿真计算软件)计算,结果容易获得用户认可,但是手动输入电气设备相关信息的效率很低,建模工作量大、繁琐。为解决电网谐波计算和分析遇到的难点问题,提出在ETAP 软件的基础上开展一项谐波计算研究,通过建立谐波源数据库和开发数据导入软件的接口,实现谐波数据二次分析,取得了满意的效果。研究成果具有准确、实用、新颖和可拓展的特点。

Harmonic pollution in power grid affected the power supply efficiency, quality and safety. The current estimation method for harmonic quantity of power grid cannot be calculated accurately and the filtering system cannot be designed reasonably for new projects’ power grid. In order to solve the issues of harmonic calculation and analysis of power grid, a harmonic calculation researches based on ETAP software were proposed. The results calculated by ETAP software (electrical system simulation calculation software developed by American OTI company) are easily recognized by users. Howerver, the input electrical equipment information manully into existing ETAP software led lower efficiency, and cumbersome workload of modeling. The secondary data analysis method with harmonic data was realized by establishing harmonic source database and developing interface of data exchange software. The results were accurate, practical, innovative and expandable.