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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Research on Energy Storage Optimization Control Strategy of Renewable Energy Microgrid System
摘要： Aiming at the operation control strategy of photovoltaic energy storage microgrid system. According to the “self-generated self-use, excess electricity sent to grid” mode, this paper proposes an economic optimization operation control strategy that can considering the cost of energy storage system in real time. The simulation verification the strategy can be used. The energy storage system has two working modes, a grid- connected mode and an independent mode. A seamless energy storage converter mode switching control technique is proposed, and the experimental results are given to verify the correctness of the theory. In response to the time-of-use price, the self-adjusting control strategy can achieve better economic operation benefits. The historical data of a practical project case in a characteristic town in Qinghai was used to simulate the whole year operational status of the strategy. The results show that the proposed strategy can greatly improve the life of energy storage system. And strategy can make the photovoltaic energy storage microgrid system achieve better operating income.
关键词： Photovoltaic,Photovoltaic energy storage microgrid,Seamless switching,Energy storage,SOC optimization
更新于2025-09-19 17:13:59
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[IEEE IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society - Lisbon, Portugal (2019.10.14-2019.10.17)] IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society - The Research on Seamless Switching Control Strategy for Micro-grid Integrating Photovoltaic and Energy Storage
摘要： A large number of distributed photovoltaic power generations that are connected to the distribution network will have a serious impact on the power quality of the distribution network and load power security. Integrating energy storage and photovoltaic cells into the micro-grid can effectively improve the power quality of distribution network and the reliability of load consumption. This paper is a research on the seamless switching control strategy for micro-grid integrating photovoltaic and energy storage (MIPES). Firstly, it analyzes the boundary conditions of MIPES seamless switching control of grid-connected/islanded modes and studies the output characteristics of photovoltaic cells over a day. The DC bus voltage can be stabilized within a certain range to meet the requirements for MIPES seamless switching of grid-connected /islanded mode. Secondly, this paper analyzes the working characteristics of silicon controlled rectifier (SCR). The results show that when SCR is turned off naturally, the load voltage will rise sharply, affecting the safety of local load. Therefore, a control strategy for SCR switch forced shutdown is proposed to solve the problem of sharp rise of load voltage during grid-connected/islanded conversion of MIPES and to ensure the load security. Finally, relevant simulation studies are carried out to verify the rationality and effectiveness of the proposed control technology.
关键词： forced shutdown control,silicon controlled rectifier,seamless switching control,micro-grid integrating photovoltaic and energy storage
更新于2025-09-16 10:30:52