Wind-fire coordinated rolling dispatching method considering wind power characteristic

Abstract

The invention belongs to the field of dispatching of a power system, and particularly provides a chance constraint mixed integer programming-based wind-fire coordinated rolling dispatching method considering wind power characteristic with regard to influence of large-scale wind power randomness and fluctuation on making of a power system dispatching plan. According to the method, the wind power characteristic and the influence on making of a rolling dispatching plan are researched, a wind-fire coordinated rolling dispatching model considering the wind power characteristic is built, and a solution is figured out by combination of matlab and yamlip; By a rolling dispatching strategy, the standby capacity of the system is effectively reduced, the running cost of the system is reduced, the system economy is improved, the model considers a wind power ramping constraint, the harm of a wind power ramping accident can be effectively reduced, and the system safety is improved. On the basis of chance constraint mixed integer programming, the rolling dispatching method considering the wind power characteristic is proposed, the method which is proposed by the invention is further used for rolling dispatching of a wind-fire combined system, the safety and the economy of the system are effectively compatible, and the system dispatching difficulty caused by wind power grid connection on a large scale is reduced.

Description

technical field [0001] The invention belongs to the field of power system dispatching, and in particular relates to a wind-fire coordinated rolling dispatching method based on chance-constrained mixed integer programming and considering wind power characteristics. Background technique [0002] With the increasing energy crisis and environmental pollution, wind power, as a clean and pollution-free renewable energy, has attracted more and more attention from all over the world. In 2016, the total installed capacity of wind power in my country was 148.64GW, and the development of wind power began to shift from the "Three Norths" region to the east and south. With the continuous increase of wind power grid-connected capacity, the randomness and volatility of wind power have a great impact on the power system. The influence of wind power is increasing day by day, especially the influence of large-scale centralized wind power grid integration on the formulation of power system disp...

AI Technical Summary

Problems solved by technology

Liu Tianqi, He Chuan, Hu Xiaotong and others designed an optimal control method for wind power ramping (Patent No. 201510770528.1). CN201410578942.8), but it uses energy storage to make up for the randomness and volatility of wind power. Due to the high cost of energy storage equipment, it cannot be applied on a large scale

Qi Yongzhi and Liu Yutian designed a wind power ramping cooperative control system and method based on competitive game (Patent No. 201310194192.X), but it improves the wind power ramping characteristics through the cooperative control among wind farm groups, if only relying on The slope control of the wind farm group has certain limitations and the economy is not high

Generally speaking, there is still little research on wind-fire coordinated rolling dispatch considering wind power characteristics, and energy storage equipment is mostly used to stabilize wind power fluctuations, but the cost is high. Therefore, a new wind-fire coordinated rolling dispatch considering wind power characteristics is explored The solution has certain practical application value

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