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| Voltage Curve Optimally Developing of 220kV Power Plant Based on Voltage Difference between Generation and Grid |
| Chen Zexing1, Ye Linhao1, Zhang Yongjun1, Lin Xiaolang2, Ma Weizhe2 |
1. Key Laboratory of Clean Energy Technology of Guangdong Province South China University of Technology Guangzhou 510640 China;
2. Shenzhen Power Supply Bureau Co. Ltd Shenzhen 518000 China |
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Abstract Voltage control of power plants is the basis for safe and economic operation of power grid. On the purpose of minimizing the active power loss in power grid, the optimal allocation of reactive load between a 220kV power plant and power system is analyzed. This article shows the affecting factors of the optimal reactive power of power plant. It also put forward the evaluation index which reflects the matching between the voltage control of power plant and the voltage-regulate demand of power system, namely, the voltage difference between generation and grid (VDGG). And then, by controlling the values of variables that affect the VDGG, the article adopts an optimal mathematical model to obtain the optimal VDGG under different operation modes of power grid. After differently and uniformly dealing with the optimal VDGG, the daily voltage curve of power plant is optimally developed combined with the predictive voltage of the hinge bus. The effectiveness of the method is verified by case study, which achieves simple and practical effects of reactive power optimization.
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Received: 23 October 2015
Published: 19 July 2017
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2017, Vol. 32 
