A Method for Generating Cost Curve of Multi-source Generating Units

Abstract

The invention provides a method for generating a power generation cost curve of a multi-source unit. The multi-source unit comprises a thermal power generating unit, an LNG (Liquefied Natural Gas) unit, a wind power generating unit and a hydroelectric generating unit. The method comprises the following steps: obtaining basic data of the multi-source unit, and determining a power generation sequence of the multi-source unit; generating a power generation cost curve of the thermal power generating unit; generating a power generation cost curve of the LNG unit; generating power generation cost curves of the wind power generating unit and the hydroelectric generating unit; and performing security constrained economic dispatch with a target of the minimal power generation cost of the multi-source unit. According to the invention, the planned power utilization target of the thermal power generating unit can be effectively realized; therefore, the units having good regulation performances sufficiently play a role of regulating peaks; and renewable energy can be sufficiently utilized.

Description

technical field [0001] The invention relates to a generation method, in particular to a generation method of a generation cost curve of a multi-source unit. Background technique [0002] With the construction of UHV power grids and the advancement of regional power grid interconnection, the scale of the power system has gradually expanded, and the installed capacity and load level of power generation have grown rapidly. Coupled with the integration of large-scale renewable energy, the complexity of power grid operation and dispatch has increased sharply. At present, my country's electric power dispatching organization formulates the generation plan of generating units, which is difficult to guarantee the safety and economy of dispatching operation. The purpose of safety-constrained economic dispatch is to realize the optimal economic operation of the power generation system. Its basic principle is to determine the optimal unit output plan based on the unit start-up and stop ...

AI Technical Summary

Problems solved by technology

However, the current optimization models of security-constrained economic dispatch are all based on cost models, such as electricity prices, energy consumption, fuel costs, etc., which cannot meet the multi-mode application requirements of power generation plan optimization in my country

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