Thermal power plant energy storage configuration system based on power distribution network scene and strategy

Abstract

The invention discloses a thermal power plant energy storage configuration system based on a power distribution network scene. The thermal power plant energy storage configuration system comprises a power grid, a main transformer, a high-voltage plant transformer, a thermal power plant generator set, energy storage equipment, a measurement and control device, a telecontrol device, a set DCS systemand an energy storage control system and a strategy. The thermal power plant energy storage configuration strategy based on a power distribution network scene comprises the following steps: 1) collecting power distribution network data, and establishing a load prediction power curve; 2) performing load flow calculation to obtain power and voltage of an access node of the thermal power plant; 3) establishing a thermal power plant energy storage configuration optimization model; 4) solving to obtain the optimal node and the energy storage capacity of the energy storage system installation, and5) evaluating the solving result. According to the method, the position and the capacity of the energy storage system are effectively and reasonably configured in the thermal power plant, frequent starting and stopping of a thermal power generating unit are reduced, the power peak-valley difference of the system is effectively stabilized, and system operation is more economical.

Description

technical field [0001] The invention belongs to the field of optimal configuration of energy storage systems on the power generation side, and in particular relates to an energy storage configuration system and strategy for thermal power plants based on distribution network scenarios. Background technique [0002] In recent years, my country's photovoltaic, wind power and other new energy power generation has developed rapidly, and the installed capacity of new energy grid-connected equipment has grown rapidly. Due to the uncertainty of new energy power generation itself, while saving energy and reducing emissions, the power generation grid has increased significantly. The peak-to-valley load difference of the power grid increases the difficulty of peak regulation in thermal power plants. Due to the long frequency response time and slow ramp rate of traditional thermal power units, the integration of new energy sources has also increased the frequency regulation pressure on t...

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Problems solved by technology

Due to the high cost of energy storage systems, how to configure energy storage for thermal power plants to achieve the best economic benefits is a new problem that needs to be solved urgently

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