Scheduling method for pumped storage power station to participate in electric power system with wind power

Abstract

The invention provides a scheduling method for a pumped storage power station to participate in an electric power system with wind power. First, the installed capacity of the pumped storage power station is classified, schemes are screened to obtain feasible schemes, and current scheduling models for the pumped storage power station to participate in the electric power system with wind power are established according to different feasible schemes; then, the models are solved to obtain operating points of a peak-load regulation unit of the pumped storage power station, unit combination and operating points of a thermal power unit and operating costs and air abandon volumes of the system in different feasible schemes; the air abandon volumes of the electric power system with wind power in all the feasible schemes are compared, and if the air abandon volumes are not consistent, the scheme with the smallest air abandon volume is selected as the optimum scheme; or else, the total positive spinning reserves and the total negative spinning reserves provided by the system in different periods are calculated according to the result, the expected value of electric quantity deficiency of the system is calculated with a Monte Carlo simulation method so as to obtain the power shortage cost, finally, the total costs of all the feasible schemes are compared, and the feasible scheme with the smallest total cost is selected as the optimum classification scheme.

Description

technical field [0001] The invention belongs to the field of power systems, and relates to a scheduling method for a pumped storage power station participating in a power system including wind power. Background technique [0002] In recent years, the installed capacity of wind power in China has grown rapidly. Wind power is a renewable and green energy, but its output has the characteristics of randomness, volatility, and anti-peak regulation. Peak and frequency modulation are difficult, affecting the safe and stable operation of the system. At present, in addition to the optimal planning and design of the wind farm itself, the cooperation between the pumped storage power station and the wind farm has received extensive attention. The unit capacity cost of the pumped storage power station is relatively low, and it can be stored on a large scale. [0003] At present, the research on the participation of pumped storage power plants in day-ahead dispatching of power systems c...

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of wind power penetration rate, not only the system has brought greater pressure on peak regulation, but also the power grid is required to provide more rotating reserves to ensure the safe and stable operation of the system. However, the current research often only focuses on economic benefits The maximum is the goal, ignoring the reliability of the system operation, and it is impossible to give full play to the dynamic benefits of the pumped storage power station

Images