Operation simulation method for new energy power system with energy storage

Abstract

The invention discloses an operation simulation method for a new energy power system with energy storage. Firstly, a thermal power electric quantity cost model, a wind power electric quantity cost model and an energy storage cost model in the whole life cycle are constructed, the credible capacity after energy storage is accessed is calculated and is combined with an electricity price model, and an income model of a new energy system containing energy storage in the whole life cycle is constructed; and secondly, the characteristic of stabilizing new energy power fluctuation of energy storage is considered, and an electric power system operation simulation model containing the energy storage new energy is builton the basis of the characteristic; according to the model, the maximum income ofthe new energy system containing energy storage is used as an objective function I, the quadratic sum of new energy electric field output change values between adjacent time periods of the new energyelectric field is used as a target function II, system power balance, unit maximum and minimum output, thermal power unit climbing, energy storage power station charging and discharging power, energystorage power station capacity and reliability are taken as constraint conditions, and finally a power system operation simulation model containing energy storage new energy based on a particle swarmalgorithm is solved to obtain various energy operation simulation results.

Description

technical field [0001] The invention relates to a new energy power system operation simulation method. Background technique [0002] In recent years, with the depletion of fossil energy, all countries in the world have turned their attention to new energy. However, as more and more renewable energy farms are built and put into the grid, various adverse effects caused by the grid-connected operation of renewable energy also follow. Due to the instability, volatility and randomness of renewable energy output, new energy power generation poses great challenges to the reliable operation of power systems. The volatility and intermittency of renewable energy can be stabilized by energy storage technology. Battery energy storage has the characteristics of high energy, flexible installation, and fast charging and discharging, making it one of the priority development directions. Large-scale access to energy storage technology on the new energy power generation side, on the one ha...

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Problems solved by technology

[0003] Although scholars at home and abroad have proposed a variety of power cost models for thermal power, wind power, and other energy sources, and have also established a variety of new energy power system operation simulation models on this basis, most of these operation simulation models do not consider the output of new energy. The impact of instability, volatility and randomness on operation simulation, few people consider energy storage technology from the level of operation simulation, and research and build a power system operation simulation model with a high proportion of new energy including energy storage

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