Reactive Optimization for Power System with High Proportion of Renewable Energy

Yuezhe Dong

College of Electrical Engineering, Qingdao University, Qingdao, 266071, China

Abstract: Under the background of clean, low-carbon and intelligent energy revolution, renewable energy with high proportion has become the main development direction of power system, which has brought tre-mendous changes to the structure of power system. The power system with high proportion of renewable energy has complex structures.  In the face of higher reliability and quality requirements of power supply, it is impossible to achieve safe and reliable operation, which makes the waste of power resources such as large vacancy of reactive power and low power factor increasingly prominent. Therefore, reactive power optimization of power system with high proportion of renewable energy is proposed. By establishing the mathematical model of reactive power optimization of power system and relying on the constraint equation of reactive power optimization of power system, the state variables and control variables of power system are solved to realize the reactive power optimization of power system with high proportion of renewable energy. The simulation experiment shows that the reactive power optimization of power system with high proportion of renewable energy proposed in this paper can reduce the waste of power resources by 40%.

Keywords: High proportion; Power system; Joint optimization; Resource waste