A Method of Economic Dispatch in Electric Power System

Abstract

The invention discloses a power system economic dispatching method and relates to the technical field of power systems to solve the problem of economic dispatching of a power system merged into a renewable energy power station. The power system economic dispatching method comprises the steps of acquiring a network structure and network parameters of the power system, generated output corresponding to a traditional energy power generator in the power system and power generator parameters, power generated output corresponding to a renewable energy power generator in the power system and power generator parameters, a load model and load parameters of loads in the power system, power transmission power of a power transmission branch in the power system and power transmission branch parameters and an energy storage model of an energy storage device in the power system and energy storage equipment parameters; establishing an initial economic dispatching model of the power system; establishing an optimal dispatching model of the power system, wherein the renewable energy abandoning quantity in the power system is within a preset tolerance range, and power generated by the renewable energy power generator is not used for energy storing; an economic dispatching result with the minimal comprehensive cost is calculated.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method for economic dispatching of power systems. Background technique [0002] At present, the raising of energy and environmental issues has prompted the rapid development of renewable energy power stations, such as wind power stations, solar power stations, and tidal power stations. However, due to the large intermittency and volatility of renewable energy power stations, and the large uncertainty of renewable energy power stations, the power system incorporating renewable energy power stations is facing a more severe form, especially The economic dispatch of the power system is facing great challenges. [0003] The economic dispatching of the power system refers to formulating the optimal load distribution plan between power stations or generators on the premise of ensuring the safe and reliable operation of the power system and meeting the power quality and power co...

AI Technical Summary

Problems solved by technology

For the traditional power system (that is, the power system that is not integrated with renewable energy power stations), the economic dispatch of the power system can be achieved only by establishing a simple linear model; however, for the integration of renewable energy For the power system of energy power stations, due to the intermittency, volatility and uncertainty of renewable energy power stations, the traditional economic dispatch method cannot obtain the economic dispatch results with the smallest comprehensive cost (the energy consumption or operating cost of the entire power system The least), that is, the traditional economic dispatch method cannot minimize the energy consumption or operating costs of the entire power system and obtain the greatest economic benefits under the premise of ensuring the safe and reliable operation of the power system and meeting the power quality and power consumption needs

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