Real-Time Voltage Regulation of Distributed Power Grids with Wind Power Integration

Ting Cui, Yangwu Shen, Liqing Liang, Bin Zhang, Hu Guo, Jian Zuo
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引用次数: 1

Abstract

This paper proposes a real-time voltage regulation for distributed power grids, which is able to determine a voltage control scheme including reactive power of wind power generators and conventional voltage controllers. Firstly, the statistics error distribution of wind power prediction in ultra short term is obtained. According to the active power of wind power generators and its prediction error, the available reactive power capability of wind power generators is determined. And then, a voltage control model with wind power generators, conventional generators, SVCs, switching capacitors and inductors is established. An improved interior point method is applied to solve the control problems. The proposed real-time voltage regulation is mainly achieved by the procedures involving determining the available reactive power capability of wind power generators, establishing the voltage control model, and solution using the improved interior point method. Finally, an actual distributed power grid is used to verify the effectiveness of the proposed control.
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风电一体化分布式电网的实时电压调节
本文提出了一种分布式电网的实时电压调节方案,能够确定一种包括风力发电机无功功率和传统电压控制器的电压控制方案。首先,得到了超短期风电功率预测的统计误差分布。根据风力发电机组的有功功率及其预测误差,确定风力发电机组的可用无功能力。然后,建立了风力发电机、常规发电机、SVCs、开关电容器和电感的电压控制模型。采用改进的内点法解决了控制问题。本文提出的实时电压调节主要通过确定风力发电机组可用无功能力、建立电压控制模型、采用改进的内点法求解等步骤来实现。最后,通过一个实际的分布式电网验证了所提控制方法的有效性。
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