A compact algorithm for three-phase three-wire system reactive power compensation and load balancing

Proceedings 1995 International Conference on Energy Management and Power Delivery EMPD '95 Pub Date : 1995-11-21 DOI:10.1109/EMPD.1995.500753

San-Yi Lee, Wei-Nan Chang, Chi-Jui Wu

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引用次数: 21

Abstract

A compact control algorithm for reactive power compensation and load balancing with the static VAr compensator (SVC) in three-phase three-wire power systems is developed in this paper. Each phase susceptance of the SVC can be obtained from a very simple function of voltage and power signals which are measured by a three-phase voltage transducer and two single-phase active and reactive power (P-Q) transducers at the load bus. The calculation of compensation susceptances is based on the criterion of a unity power factor and zero sequence currents after compensation. A simulation is made, as the first stage, to show the validity of the proposed compensation algorithm. Then, a laboratory size microcomputer-based SVC, which consists of thyristor-controlled reactors (TCRs) and fixed capacitors (FCs), is designed and implemented. Simulation and experiment results show that the algorithm is very suitable for online control of the SVC which is designed for phase balancing and power factor correction.

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三相三线制系统无功补偿与负载平衡的一种紧凑算法

提出了一种基于静态无功补偿器(SVC)的三相三线制电力系统无功补偿与负载平衡的紧凑控制算法。SVC的每个相电纳可以由电压和功率信号的一个非常简单的函数得到，这些信号是由负载母线上的一个三相电压传感器和两个单相有功和无功(P-Q)传感器测量的。补偿电纳的计算是基于补偿后零序电流和单位功率因数的准则。首先通过仿真验证了所提补偿算法的有效性。然后，设计并实现了一个实验室大小的基于微机的SVC，它由晶闸管控制电抗器(tcr)和固定电容器(fc)组成。仿真和实验结果表明，该算法非常适合用于相位平衡和功率因数校正的SVC的在线控制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings 1995 International Conference on Energy Management and Power Delivery EMPD '95

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