Electric system optimizing dispatching method considering uncertainty of power generation of power generating side combination

Abstract

The invention discloses an electric system optimizing dispatching method considering uncertainty of power generation of power generating side combination. The method includes steps of processing to obtain a first probability density function and normalizing a second probability density function; processing to obtain a wind power multi-state model containing a wind power combined state value and awind power force output combination state probability; processing to obtain a probability density function with traditional power generator power output uncertainty caused by the combined power generation of a traditional thermal power generating unit; processing to obtain all unit force output combined state values of a power generating side and force output combined state probability; inputtingan optimal tidy flow model to solve the model and acquire the power generating power value; calculating the expectation values of a traditional thermal power generating unit and the power generating power of a wind power plant under all states. The invention considers the force output uncertainty caused by active behavior of combined power generation of a power generating side in a real-time dispatching, and contains initiatives of the traditional power generating unit and the wind power plant; the electric system optimizing dispatching method can make dispatchers acquire more accurate systemdispatching result conveniently while reduce the running cost of an electric system.

Description

technical field [0001] The invention relates to a power system scheduling method, in particular to a power system optimal scheduling method considering the uncertainty of combined power generation at the power generation side. Background technique [0002] Energy is indispensable for the survival and development of human society. In order to alleviate the global energy crisis and the increasingly serious environmental pollution, renewable energy is booming. As a clean and renewable energy, wind energy has attracted more and more attention from all over the world. In 2016, the global installed capacity of wind power was 486,790MW. In some countries, the share of future wind power generation will be huge, for example, 50% of electricity consumption in Denmark will come from wind power in 2020. [0003] As the penetration rate of wind power gradually increases, wind farms gradually participate in the electricity market like traditional thermal power units. Existing studies ...

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Problems solved by technology

This uncertainty can lead to additional system operating costs to balance power system generation and demand

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