| 链式STATCOM电容电压不平衡现象研究:(二)数学模型 |
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| 引用本文： | 耿俊成,刘文华,袁志昌. 链式STATCOM电容电压不平衡现象研究:(二)数学模型[J]. 电力系统自动化, 2003, 27(17): 35-39 |
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| 作者姓名： | 耿俊成 刘文华 袁志昌 |
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| 作者单位： | 清华大学电机系,北京市,100084 |
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| 摘 要： | 电容电压不平衡及其控制是链式静止同步补偿器(STATCOM)安全可靠运行必须解决的关键问题。文中建立了链式STATCOM的数学模型，揭示了电容电压不平衡现象产生的机理，正确描述了逆变桥各参数对电容电压分配的影响。基于PSCAD的仿真验证了模型的正确性。该模型对于电压平衡控制策略的设计具有重要意义。
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| 关 键 词： | 静止同步补偿器 链式多电平逆变器 电容电压不平衡 数学模型 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 1900-01-01 |
RESEARCH ON THE VOLTAGE UNBALANCE OF DC CAPACITORS OF CASCADE STATCOM Part Two Mathematical Model |
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| Geng Juncheng,Liu Wenhua,Yuan Zhichang. RESEARCH ON THE VOLTAGE UNBALANCE OF DC CAPACITORS OF CASCADE STATCOM Part Two Mathematical Model[J]. Automation of Electric Power Systems, 2003, 27(17): 35-39 |
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| Authors: | Geng Juncheng Liu Wenhua Yuan Zhichang |
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| Abstract: | To keep the DC capacitors' voltage balance is very important for the reliable operation of cascade STATCOM since DC capacitors of cascade STATCOM are separate. This paper presents a mathematical model to study the mechanism of the happened voltage unbalance. Further more, the impacts of inverter's parameters on the distribution of capacitors' voltage are investigated. Simulations verify the correctness of this model and the conclusion has significant contribution to designing controller to balance the voltages. |
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| Keywords: | static synchronous compensator (STATCOM) cascade multilevel inverter DC capacitor voltage unbalance mathematical model |
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