增加风穿透的变频变压器

2008 Joint International Conference on Power System Technology and IEEE Power India Conference Pub Date : 2008-10-01 DOI:10.1109/ICPST.2008.4745225

T. Geetha, V. Jayashankar

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引用次数: 3

摘要

利用通用测试系统研究了风电场对弱电网的电压影响。以风电场的规模为电网短路MVA的20%来表征弱电网。在不同的电网X/R比值下，分析了风电场与电网的连接点电压(POI)。结果表明，降低POI处的实际功率注入使POI处的电压在整个X/R比范围内的允许值之内。建议采用抽水蓄能装置或变频变压器作为异步互联装置。给出了所提出的网络拓扑的完整建模和仿真。并以印度电力系统为例进行了讨论。

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Variable Frequency Transformers for Increased Wind Penetration

The voltage impact of wind farms on weak grids is studied using a generic test system. The size of the wind farm is taken as 20% of the grid short circuit MVA to characterize weak grids. The voltage at the point of interconnection (POI) of the wind farm to the grid is analyzed for different values of grid X/R ratios. It is shown that reduction of real power injection at POI brings the voltage at POI within permissible values for the entire range of X/R ratios. A pumped storage unit or a variable frequency transformer as an asynchronous inter connector is suggested to realize this. Complete modeling and simulation of the proposed network topologies are given. The results are discussed with reference to the Indian power system.

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来源期刊

2008 Joint International Conference on Power System Technology and IEEE Power India Conference

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