Research on Comprehensive Complementary Characteristics Evaluation Technology of Wind-solar-hydro Combined Power Generation System

Wind energy, solar energy and hydropower have become the three most widely developed and utilized renewable energy resources. Wind-solar-hydro combined power generation systems usually can provide smoother and more stable power output. It is particularly important to accurately quantify the complementary characteristics of wind, solar and hydropower. Based on the three aspects of output stability, reliability and economy, this article analyzes the output characteristics of wind power, photovoltaic, and hydropower, and establishes the comprehensive complementary characteristics evaluation index system of wind-solar-hydro combined power generation system. Taking wind power stations, photovoltaic stations and hydropower stations in a province of Southwest China as examples, the complementary operation characteristics of wind-solar-hydro power generation in different seasons are analyzed. The results show that there is natural complementarity in wind-solar-hydro combined power generation system.