Low-carbon power generation dispatching method for wind farm

Abstract

The invention discloses a low-carbon power generation dispatching method for a wind farm, which belongs to the field of operation and control of power systems, and includes the steps: 1) building a low-carbon power generation dispatching model for the wind farm; and 2) solving the low-carbon power generation dispatching model for the wind farm by means of a chaotic differential evolution algorithm. The low-carbon power generation dispatching method for the wind farm has the advantages that 1) actual conditions of the wind farm are more accurately reflected, so that a dispatching scheme formulated on the basis is more reliable; 2) taking CO2 emission restriction into consideration, so that the environment-friendly requirement is met; and 3) taking minimization of fuel cost of a fuel coal fossil power plant as the purpose, so that dispatching economy is guaranteed. The low-carbon power generation dispatching method for the wind frame based on the chaotic differential evolution algorithm can effectively solve the problems of high dimension, non-convexity, nonlinearity and multiple restrictions in power generation dispatching of the power systems, and can overcome the shortcomings of easiness in local convergence and prematurity of a standard differential evolution algorithm.

Description

technical field [0001] The invention belongs to the field of power system operation and control, in particular to a low-carbon power generation scheduling method including wind farms. Background technique [0002] With the increasingly serious problems of global energy supply security and climate change, wind energy, as a green energy with low cost, mature technology and high reliability among renewable energy sources, has developed rapidly in recent years and has become an important part of world energy. As of the end of 2010, my country's accumulated wind power installed capacity reached 44.73GW, ranking first in the world, and has planned a number of large-scale wind power bases of 10 million kilowatts. Wind power has the characteristics of randomness and intermittency, resulting in large fluctuations in wind power power. Large-scale wind power grid integration will bring new challenges to the economical and safe operation of traditional power systems. Among them, the gr...

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Problems solved by technology

First of all, the output of wind power is characterized by uncertainty, and its maximum output is limited by the wind speed of the wind farm, while thermal power plants will be affected by CO in actual operation. 2 However, the uncertainty of wind power output and the CO produced by conventional thermal power units in the process of power generation were not considered when formulating power generation plans for power grids 2 Therefore, it does not conform to the actual situation, nor can it satisfy the safety, economy and environmental protection of dispatching; secondly, the power system generation dispatching problem has the characteristics of high dimensionality, non-convexity, nonlinearity, and multiple constraints, so it is difficult to find the theoretical optimal solution

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