Unit combination calculation method considering large-scale wind power consumed by electric vehicles

Abstract

The invention relates to a unit combination calculation method considering large-scale wind power consumed by electric vehicles. A wind curtailment cost model and a direct purchase model of wind powerand a charging and discharging cost model and a battery aging cost model of electric vehicles are established by taking the emergency demand response of conventional thermal power generating units, awind power plant, plug-in electric vehicles and a load side as a research object, a demand response model is established, a unit combination model considering large-scale wind power consumed by electric vehicles with the objective of minimum total operation cost of the system is established on the basis, and the problem is solved by an optimization algorithm based on teaching and learning. According to the invention, the charging and discharging power, the charging and discharging efficiency, the battery aging cost and the corresponding total charging and discharging cost of plug-in electricvehicles are studied, the influence of participation of the electric vehicles in scheduling on the total operation cost of the system is analyzed, and the self-elasticity and mutual elasticity of theload are considered in the demand response, so that an emergency demand response plan is formulated, the total operation cost of the system can be remarkably reduced, and the load curve is optimized.

Description

technical field [0001] The invention relates to a calculation method for unit combination including electric vehicles to absorb large-scale wind power. Background technique [0002] Wind energy is a clean, renewable energy with abundant reserves. It will not decrease with its own conversion and utilization, nor will it cause serious environmental pollution problems in the process of utilization like fossil fuels. Reasonable use of wind energy can reduce the use of fossil fuels, thereby reducing fuel costs. [0003] The electric vehicle can be regarded as a storage battery, which is discharged externally during the peak load period and acts as a power source to reduce the power supply burden of the power system. It is charged during the low load period to play the role of load and realize the function of system peak shaving and valley filling. [0004] Therefore, by formulating a corresponding demand response system and standardizing the user's electricity consumption behavi...

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Problems solved by technology

[0005] Previous studies considered the treatment of uncertain wind power, the impact of electric vehicle charging and discharging behavior on the total system operating cost, and the implementation of emergency demand response on the load side, but did not consider the aging cost of electric vehicle batteries.

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