Analysis and Research on The Contribution of Energy Storage System to The Integrated Low-carbon Operation of Source-Grid-Load-Storage of Power System

With transformation of global energy structure and the demand for low-carbon development, the importance of energy storage systems in power system has become increasingly prominent. This study aims to analyze the contribution of energy storage systems to the integrated low-carbon operation of power systems. In the background, traditional power systems face challenges such as volatility in renewable energy access and uncertainty in load demand. As a flexible adjustment resource, energy storage systems can stabilize fluctuations and improve system efficiency. The research constructs a power system simulation model with energy storage, sets various operating scenarios, and compares and analyzes the system’s operating status before and after the energy storage system is connected. Experimental results show that the energy storage system has significantly improved the consumption capacity of renewable energy, with the utilization rates of wind power and photovoltaic increasing by 15% and 20%, respectively. At the same time, through peak shaving and valley filling effect of energy storage system, the peak-valley difference rate of the system load is reduced by 10%, effectively alleviating the pressure on power grid. In terms of low-carbon operation, the optimal dispatch of energy storage system has reduced the system’s carbon emissions by 12%, providing strong support for low-carbon transformation of power system. In addition, economic analysis shows that although the introduction of an energy storage system increases initial investment, the long-term operating cost is reduced by 8% by improving the system’s operating efficiency and reducing the loss of wind and solar abandonment.