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| 摘要: |
| 使用PSCAD／EMTDC软件建立一个利用静止补偿器STATCOM(STATic COMpensator)进行无功补偿的仿真系统．分析了不同STATCOM直流电吝值对系统谐波含量和电吝电压波动幅值的影响．得出了系统谐波含量和直流电容电压波动幅值随电容值的变化规律，提出了根据降低STATCOM出口端电压的谐波含量和保持直流电容电压波动幅值在一定范围内的要求来选择其电吝值的方法．由该方法得出的仿真系统中STATCOM的电容值跟按其他直流电吝选择方法所得的结果相符。仿真系统中的STATCOM在该电容值下有较好的工作性能。 |
| 关键词: STATCOM 直流电容 谐波含量 电容电压波动 |
| DOI： |
| 分类号:TM714.3 |
| 基金项目: |
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| Effect of STATCOM DC capacitor on harmonic distortion and voltage fluctuation |
|
OU Kai - jian
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| Abstract: |
| A simulation system of reactive compensation with STATCOM is constructed using PSCAD / EMTDC and the effect of DC capacitor on system THD ( Total Harmonic Distortion ) and its voltage fluctuation amplitude is analyzed.According to the obtained variation patterns a way of capacity optimization for DC capacitor is proposed ,which is aiming at reducing the THD of STATCOM outlet voltage and keeping voltage fluctuation amplitude of DC capacitor within a certain range.The capacity optimized in the simulation system is nearly same as the values decided by other methods.The STATCOM performs well with the DC capacitor of optimized capacity. |
| Key words: STATCOM,DC capacitor,total harmonic distortion,voltage fluctuation of capacitor |
