On December 21st, the “key technology for storing energy to increase grid acceptance of large-scale photovoltaic power generation†conducted by the State Grid Qinghai Electric Power Company was reviewed by the expert group of the Provincial Department of Science and Technology.
The expert group unanimously believed that the research results used energy storage technology to improve the reliability and operability of photovoltaic power generation capacity, reduced the amount of abandoned photovoltaics, and achieved technological innovation in the establishment of optical storage models and optical storage optimization and coordination scheduling. The research results have reached the international advanced level.
Relying on abundant solar energy and lithium resources, our province is currently building tens of thousands kilowatts of photovoltaic power generation bases and a 100 billion yuan lithium battery industrial chain. The provincial energy storage industry has a good development situation. Photovoltaic storage can not only improve the stable operation of the power grid and absorb photovoltaic capacity, but also promote the sound development of light, storage and power grid. This achievement has explored a practical road for the coordinated development of photovoltaic, energy storage and Qinghai Power Grid in Qinghai Province, and has broad prospects for development.
The research results are based on the study of the mechanism of light storage and power generation, optimal allocation of energy storage, joint operation and scheduling of light and storage, and economical operation of optical storage power stations, and are in-depth on the volatility and consumption problems of large-scale centralized photovoltaic power generation. Digging out the output characteristics of photovoltaic and energy storage power generation, a grid-source-reservoir simulation system including a detailed model of optical storage was established, the reliability model of photovoltaic power station after energy storage was added was optimized, and a method and evaluation of optimal capacity allocation of energy storage system was proposed. Indicators, developed the joint storage management system of optical storage, achieved the commercialization of the first large-scale optical storage power station, achieved remarkable results in the suppression of fluctuations and reduction of light, and ensured the stable operation of the power grid.
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