| 直接电流控制的配电静止无功发生器用于改善电压质量的研究 |
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| 引用本文： | 唐杰,罗安,荣飞,贾煜. 直接电流控制的配电静止无功发生器用于改善电压质量的研究[J]. 电网技术, 2006, 0(Z2) |
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| 作者姓名： | 唐杰 罗安 荣飞 贾煜 |
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| 作者单位： | 湖南大学电气与信息工程学院 湖南省长沙市410082 |
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| 摘 要： | 介绍了一种采用直接电流控制的用于改善中低压配电网电压质量的新型静止无功发生器(DSTATCOM),其主电路采用基于VSI-SPWM结构的电压型逆变器,指令电流的运算和补偿电流的控制均采用同步旋转参考坐标系。重点论述了DSTATCOM用于抑制电压跌落和电压闪变两种常见的电压质量问题。根据无功指令电流形成的不同方法, DSTATCOM有电流控制模式和电压控制模式两种运行模式。在两种运行模式下对DSTATCOM抑制电压跌落和电压闪变进行了仿真研究,仿真结果表明,电流控制模式适合于抑制电压闪变,而电压控制模式适合于抑制电压跌落。
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| 关 键 词： | 配电静止无功发生器 无功补偿 电压质量 电流控制模式 电压控制模式 |
Study on Direct Current Controlled Distribution Static Synchronous Compensator Used for Improvement of Voltage Quality |
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| TANG Jie,LUO An,RONG Fei,JIA Yu. Study on Direct Current Controlled Distribution Static Synchronous Compensator Used for Improvement of Voltage Quality[J]. Power System Technology, 2006, 0(Z2) |
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| Authors: | TANG Jie LUO An RONG Fei JIA Yu |
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| Abstract: | A type of direct current controlled static reactive power compensator (DSTATCOM) used for improvement of voltage quality in low-medium distribution network is introduced. The main circuit of DSTATCOM consists of VSI-SPWM voltage source inverter. The extraction of reference current and the tracking control of compensator current are realized in synchronous reference frame. The function of DSTATCOM to mitigate voltage sag and flicker is presented in this paper and the control mode of DSTATCOM is discussed in detail. The function of DSTATCOM to mitigate voltage sag and flicker under different control mode is simulated with MATLAB. The simulation results shows that the current control mode is suitable for mitigating voltage flicker and the voltage control mode is suitable for mitigating voltage sag. |
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| Keywords: | distribution static synchronous compensator reactive power compensation voltage quality current control mode voltage control mode |
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