Rogowski线圈中积分环节的研究  

Integrator of Rogowski coil

作　　者：朱超[1] 蒋煜 梅军[1] 郑建勇[1] 

机构地区：[1]东南大学电气工程学院,江苏南京210096 [2]苏州供电局,江苏苏州215000

出　　处：《电力自动化设备》2013年第9期64-67,共4页Electric Power Automation Equipment

摘　　要：主要分析了电子式互感器中模拟积分器与数字积分器的积分原理,并针对传统数字积分算法对低频干扰抑制的不足,提出了基于低频增益平坦模拟积分器的数字积分算法,有效克服了零漂的影响,降低了直流误差,解决了积分中的初值整定问题,大幅提高了测量精度。针对电力系统故障时的暂态特性,采用该积分算法进行了建模研究,验证了该积分算法的有效性与可靠性,其测量精度可以达到国家0.2级标准。Aiming at the insufficiency of conventional digital integrator in low-frequency interference rejection,the principles of analog and digital integrators used in electronic current transducer are analyzed and an integrating algorithm based on the low-frequency gain-flattening analog integrator is proposed for the digital integrator,which gets rid of the influence of zero drift to effectively lower the DC error and sets the initial value of integrator to greatly increase the measurement accuracy. It is modeled and studied according to the transient characteristics of power system,and the test results show its measuring accuracy meets the national criterion of 0.2 level,proving its validity and practicability.

关 键 词：ROGOWSKI线圈 模拟积分器 数字积分器 双线性变换 电子式电流互感器 

分 类 号：TM452.93[电气工程—电器]