Wind light and fire storage coordination optimization operation method

Abstract

A wind light and fire storage coordination optimization operation methodincludes that that thermal power unit, back-pressure heat and power cogeneration unit and extraction heat and power cogenerationunit start-up state sequence are obtained 2, that available power sequence of the wind turbine generator system and the photovoltaic generator system are obtained, and then aiming at minimizing the operating cost of power system, considering the real-time power balance constraint of power system, unit power constraint, unit climbing constraint, cogeneration unit heating constraint, pumped storagestation constraint and power system reserve constraint, the wind-solar-fire-storage coordinated operation model is established. Finally, the wind-solar-fire-storage coordinated operation model is solved for the power system states in different simulation periods, and the power arrangement of the unit is obtained. If there is no feasible solution to the model, the abandoned wind power and abandoned light power are introduced to modify the coordinated operation model of scenery, fire and storage, and then the solution is obtained. The invention realizes the coordinated and optimized operation of the scenery, the fire and the storage with the minimum operation cost of the electric power system, and can provide guidance for the operation and the dispatch of the electric power system.

Description

technical field [0001] The invention belongs to the field of new energy consumption in power systems, in particular to the problem of new energy consumption in power systems with multiple types of power sources, and specifically relates to a method for coordinated and optimized operation of wind, power, thermal storage. Background technique [0002] In recent years, new energy power generation has developed rapidly, and the proportion of new energy installed capacity in the system has been increasing. However, due to the volatility, randomness, and intermittent nature of new energy power generation, large-scale grid-connection of new energy has brought huge challenges to the system's regulation capabilities, resulting in frequent start-up and shutdown of thermal power units, and curtailment of wind and light. As a kind of energy storage equipment, the pumped storage unit plays an important role in the system peak shaving, frequency regulation and black start. The combined op...

AI Technical Summary

Problems solved by technology

[0003] In the northern part of my country, the operation of the combined heat and power unit in the winter heating period "sets the power with heat" limits the peak-shaving capacity of the unit, which brings problems for the consumption of new energy

At present, the coordinated operation model of the coexistence of multiple power sources does not consider the constraints brought by cogeneration units to the power system, and most of the existing research on multi-source coordinated operation of power systems only considers the coordinated operation of wind turbines and pumped storage power plants. As the installed capacity continues to increase, the proportion of photovoltaic power generation in the total power generation continues to increase. Therefore, it is necessary to study the power system operation mode for the coordinated operation of wind farms, photovoltaic power stations, thermal power plants and pumped storage power stations.

Images