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| Influence about Reactive Power Voltage Optimization on the Dissipation of New Energy |
| Liu Huazhi1, Li Yonggang1, Wang Youyin2, Zhang Xiaotian2, Cao Nanjun2 |
1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Baoding 071000 China;
2. Economic and Technology Research Institute of State Grid Liaoning Electric Power Shenyang 110000 China |
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Abstract Large-scale wind power and photovoltaic access to the power system will exacerbate the voltage fluctuations of the distribution network node, and the optimization of reactive voltage can effectively improve the voltage level of the system. The reactive power adjustment capability of the doubly-fed fan is analyzed firstly, and the influence model of reactive power optimization on distribution network voltage and new energy consumption is established. The distributed power sources such as wind power and photovoltaic have a certain amount of reactive power. In this paper, the margin reactive power optimization was used to optimize the reactive power, and the variance of the node voltage and the rated voltage deviation was taken as the target. Based on the conventional particle swarm optimization algorithm, intelligent particle number control was applied to improve the computational efficiency. Finally, the multi-scenario simulation analysis of the model is carried out by the IEEE 33 node system. The results show that the proposed reactive voltage optimization model can ameliorate the system voltage quality and improve the consumption capacity. In the high-permeability scenario, the system can use the reactive power of the wind power photovoltaic to optimize the system voltage level, and improve the system voltage level while ensuring the consumption of new energy. The location of new energy access affects the effect of reactive voltage optimization.
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Received: 01 July 2018
Published: 02 January 2020
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2019, Vol. 34 
