针对单回路电液位置伺服系统的动态特性，提出了一种等效流量反馈的控制方法，从而实现了串级控制。
This paper studies the dynamic characteristics of Electro hydraulic Position Servo System, and proposes a method of equivalent flow feedback to realize serial control.
因此，本文对基于等效电流量测变换的电力系统状态估计算法进行了研究分析。
Therefore, state estimation algorithm based on the measurement transformation of the equivalent current is studied in this paper.
利用输电线路两端的故障电压、电流量，提出了一种基于输电线路等效序网的故障测距方法。
Using post fault voltages and currents from the two terminals, a novel method for fault location based on transmission line's equivalent sequence networks is proposed in this paper.
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