1. 北京交通大学电气工程学院, 北京市 100044; 2. 北京交通大学国家能源主动配电网技术研发中心, 北京市 100044;3. 清华大学电机与应用电子技术系, 北京市 100084
1. School Energy of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China;2. National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China; 3. Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
The wind/photovoltaic/storage microgrid(MG)is an effective solution which achieves complementary advantages and efficient use of distributed sources. However, many factors affect the economics with various influences. The criticality of economic factors is quantified and analyzed in the wind/photovoltaic/storage MG. Based on the analysis of operation mode, the economic model of MG planning is built. The model is aimed at optimal annual net profit considering the operation characteristics of micro-sources, the power balance between the MG and the utility grid as well as the reliability constraints. Also, the evaluation indices of economic operation are established. On this basis, economic factors in both planning and operation aspects are quantified by calculating the influence coefficients. A practical MG in Yunnan Province is used as case study. The analysis results show that rational allocation of energy storage can improve the economics of MG planning, and the key economic factors of wind/photovoltaic/storage MG include the equivalent life cycles of energy storage, the unit investment cost of wind generators and the discount rate on the planning level, and the energy supplied, unit electricity price as well as unit environmental benefit of wind power and photovoltaic generation on the operation level.
XIE Hua, TENG Xiaofei, ZHANG Yanjie, et al. Analysis of Economic Influence Factors in Wind/Photovoltaic/Storage Microgrid[J]. Automation of Electric Power Systems, 2019, 43(6):70-76. DOI:10.7500/AEPS20180201004.