电力工程技术2017，Vol.36Issue(2)：82-87,6.
一种用于电子式互感器相位补偿的数字移相方法
A Digital Phase-shift Method for Phase Compensation of Electronic Instrument Transformers
摘要
Abstract
A fixed phase displacement exists when electronic instrument transformers sample analog signals, which affects the measurement accuray, and needs to be corrected using phase shift method.This paper proposes a digital phase-shift method based on least-square fitting algorithm.The digital phase shifting recurrence formula is deduced, and the performance of phase shifting algorithm is simulated and analyzed.The results show that the method has a relatively high resolution and precision in phase-shifting, furthermore, it can guarantee the amplitude measurement accuracy.The algorithm is applied to the Rogowski coil based electronic instrument transformers, and the feasibility and validity of the algorithm are verified by accuracy comparison test.关键词
电子式互感器/相位偏差/数字移相/最小二乘拟合Key words
electronic instrument transformer/phase displacement/digital phase-shift/least-square fitting分类
信息技术与安全科学引用本文复制引用
程含渺,徐晴,纪峰,穆小星,陈刚,田正其,胡琛..一种用于电子式互感器相位补偿的数字移相方法[J].电力工程技术,2017,36(2):82-87,6.基金项目
国家自然科学基金项目(51507091) （51507091）
国家电网公司科技项目:智能变电站电子式互感器复杂环境下运行性能评估关键技术研究 （）
