三相四线制系统中的负载平衡、无功补偿和中性电流消除

2014 16th International Power Electronics and Motion Control Conference and Exposition Pub Date : 2014-12-11 DOI:10.1109/EPEPEMC.2014.6980688

Metin Kıyan, M. Aydemir

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引用次数: 2

摘要

传统的三相并联无功补偿系统只能消除无功功率，而不能消除三相四线制系统中的中性电流或电压电流不平衡。在补偿无功功率的基础上，提出了一种消除中性点电流和不平衡的方法。该补偿器由并联电容器和并联晶闸管控制电抗器(TCR)组成，采用三角和双路三相电路。本文建立了对称分量理论的数学模型，并推导了三种补偿策略。通过MATLAB仿真对模型进行了验证。从规模和成本两方面对这三种补偿策略进行了讨论和比较。

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Load balancing, reactive power compensation and neutral current elimination in three phase — Four wire systems

Conventional three phase shunt reactive power compensation systems eliminate only the reactive power but do not contribute to the elimination of neutral current or voltage and current unbalance in three phase four wire systems. A hybrid wye and delta shunt compensation can be a solution for eliminating neutral current and unbalance besides compensating the reactive power. The compensator is composed of shunt capacitors and parallel connected thyristor controlled reactors (TCR) by two three-phase circuits, delta and wye. In this work, a mathematical model is presented based on symmetrical components theory and three compensation strategies are derived. The models are validated with MATLAB simulation. The three strategies of compensation are discussed and compared in terms of size and cost.

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2014 16th International Power Electronics and Motion Control Conference and Exposition

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