KEYWORDS: Carbon, Power supplies, Industry, Systems modeling, Solar energy, Data transmission, Wind energy, Power grids, Photovoltaics, Distributed interactive simulations
The electric power industry is the key field of carbon emission reduction, and promoting the carbon peak of the electric power industry in advance is of overall significance to the realization of the “double carbon” goal across the country. This paper proposes a power system optimal allocation method that couples the power CO2 emissions with the traditional power system operation simulation and aims at minimizing the total CO2 emissions, and takes the power system of Shandong province as an example for empirical analysis. Taking the current power status data of Shandong province as the input parameter, a power system production simulation model that minimizes the total carbon emissions while achieving the goal of reaching the carbon peak is constructed, and the carbon emission trajectory and the optimal allocation results of various power sources and flexible resources are obtained; At the same time, the Mann-Kendall trend test method is used to verify and analyze the carbon emission trajectory, which proves that the carbon emission trajectory has a significant downward trend, which also verifies the correctness and effectiveness of the method proposed in this paper.
KEYWORDS: Carbon, Photovoltaics, Wind energy, Systems modeling, Solar energy, Thermal modeling, Statistical analysis, Reflection, Power supplies, Power consumption
With the increasingly prominent environmental problems and the promotion of the “double carbon” goal, the participation of demand-side response resources in load peak shaving and valley filling is of great significance to the optimal operation of the power system. Based on the background that China's power demand-side response is rapidly developing and helping to implement the carbon peak target, this paper starts with optimizing dispatching and replaces the traditional price target with the system carbon emission target. Firstly, the stochastic fluctuation model of wind power and photovoltaic output is added to the power dispatching model of thermal power units, and the dispatching model taking into account the fluctuation of wind and solar power is established. Secondly, the uncertainty model of demand response is introduced, and the optimal dispatching model of power system considering the uncertainty of source and load is established. Then compare and analyze the dispatching models based on carbon target and cost target, and analyze the advantages and disadvantages of demand response in smoothing load, reducing carbon emissions and reducing power shortage risk after participating in power dispatching under different targets. Finally, through the analysis of the scheduling results of a typical peak-shaving scenario in a region, the important role of demand response resources in reducing the peak-valley difference of the power system and reducing carbon emissions is verified.
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