Multi-objective reactive power optimization strategy of power system considering large-scale renewable integration

Frontiers in Energy Research

Energy Research

Chen Liang¹  Yaxin Li¹  Xiaoyang Dong¹  Xiping Ma² 

[1] Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou, China;School of Electrical Engineering, Xi’an University of Technology, Xi’an, China;Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou, China;

关键词: reactive power optimization;    multi-objective optimization;    wind turbine;    photovoltaic unit;    voltage offset;   

DOI  :  10.3389/fenrg.2023.1213154

 received in 2023-04-27, accepted in 2023-05-23,  发布年份 2023

来源: Frontiers

【 摘 要 】

To fully tap the abilities of renewables in reactive power optimization, this paper develops a detailed model for the power regulation capabilities of wind turbines and photovoltaic units and studies their impact on the power system’s operation. First, the power system model with renewables integration is established using AC power flow. The wind turbines and photovoltaic units are modeled in detail according to their topologies and operating characteristics, and then further simplified according to the feasible region. An improved DC power flow model is adopted to handle the non-linear characteristics of the power system. On this basis, a multi-objective reactive power optimization model is constructed to minimize the power generation cost, wind and solar power curtailment, and voltage offset. Finally, comparisons between two types of models in different scenarios are designed. Numerical simulations demonstrate that the participation of renewables in reactive power regulation can improve the operational economy and voltage stability of power systems.

【 授权许可】

Unknown   
Copyright © 2023 Ma, Liang, Dong and Li.