串联谐振技术在电容式电压互感器校验中的应用分析.docx

摘 摘 要 随着电力工业的迅速发展和电力系统体制改革的不断深化，电力已走向市 场。因此发电厂到电网的发供电量的考核和核算已经成为电力系统提高自身管理 水平以适应市场变化的必要工作。发电厂上网电量和电业局下网电量计量的准确 性也越来越受到电力系统各部门和用户的重视。而互感器是进行电能计量的重要 环节，其误差好坏将对电能的考核计费产生重大影响。电容式电压互感器已广泛 应用于电网中，本文就是以研究工频串联谐振装置在电容式电压互感器误差现场 校验中的应用为重点，以保证电能计量的可靠性。 本文通过比较工频串联谐振升压装置和传统的试验变压器升压装置，分析论 证了工频串联谐振升压装置在电容式电压互感器误差现场校验中的应用的合理 性和优越性，并提出了此次课题需要解决的问题。 通过分析不同谐振的特点，确定本次装置采用阶段性调感的工频串联谐振装 置。然后以现场电容式电压互感器的电气参数为参考，分别提出了几种电抗器的 配置方式。 本文重点讲述整个装置中的高压电抗器的配置方式，以及依据配置方式制定 出励磁变压器、调压器的电气参数。 通过运用工频串联谐振装置对不同电压等级及不同电容量的电容式电压互 感器的现场校验来说明，采用本文设计方式的合理性。证明了此装置的可靠性高、 安全性好、实用性强。能够创造较好的社会效益和经济效益。 关键词：电容式电压互感器，误差，串联谐振，现场校验 Il AbstractWith Abstract With the rapid development of power industry reform and the deepening of the power system，power has been tO the market．Therefore，the power plant to the grid made electricity supply assessment and accounting has become a power system to improve their management level to adapt to market changes necessary work．Electric Power舒d electricity power plants and the net power measurement accuracy of the power system is also more and more attention to the various departments and users． The transformer is all important part of the energy measurement，the error power quality assessment billing will have a significant impact．Capacitor voltage transformer has been widely used in the grid，this paper is tO study the frequency series resonant capacitor voltage transformer unit in the field calibration error in the application as the key to ensure the reliability of energy measurement． This series resonant frequency by comparing the step—up transformer test device and a traditional step-up devices，analysis and appraisal of the series resonant frequency step-up capacitor voltage transformer unit in the field calibration error in the application of rationality and superiority，and The issues raised need to be resolved． By analyzing the different resonance characteristics，to determine the tone of this unit a sense of a phased series resonant frequency device．Then the scene capacitor voltage