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静态同步补偿器系列超高压输电线路的串联补偿

文摘

介绍了原理和基本事实可重构系统的控制,可以用来实现主要事实电压源变换器拓扑:STATCOM, SSSC和UPFC。此外,状态模型和控制算法提出了事实设备。数字信号处理器(DSP)实现控制系统用于这些设备。实验和仿真结果的比较也还提供了验证该控制和它描述了一个活跃的方法系列线补偿,同步电压源,实现门断开(GTO)电压的逆变器,用于提供可控串联补偿。这种补偿器,称为静止同步串联补偿器(SSSC),可以提供可控补偿电压在一个相同的电容和电感范围,独立的magnatude线电流。经典是免疫网络的共鸣。除了系列无功补偿,与外部直流电源也可以补偿上的电压降电阻分量阻抗。阻抗的实部的补偿可以维持高X / R比值即使线串联补偿度非常高。并发和协调的调制和真正的无功补偿可以大大增加功率振荡阻尼。本文论述了SSSC的基本操作和性能特征,并比较他们的特征和更传统的基于thyristor-switched或控制串联电容器补偿装置。 It also presents some of the results of TNA simulations carried out with an SSSC hardware model. presented an in-depth investigation of the dynamic performance of STATCOM and SSSC theoretically and by exact digital simulation. A 24- pulse GTO based converter model is designed to represent the operation of the STATCOM and SSSC within a power transmission system. It is shown that the Phase-Locked Loop (PLL) inherent delay has a great effect on the dynamic operation of the SSSC and a new auxiliary regulator is proposed to enhance the dynamic performance of the SSSC. The proposed control schemes are validated by digital simulation.

P。Suman Pramod Kumar N。Vijaysimha, C.B.Saravanan

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