Method of reducing wind power wind curtailment and device thereof

Abstract

The invention provides a method of reducing wind power wind curtailment and a device thereof. The method comprises the following steps of acquiring a wind speed of a wind power plant and real-time output, and determining wind curtailment power of the wind power plant; determining wind curtailment amounts of an energy storage system and a heat-accumulating-type electric boiler which simultaneously participate in consumption; determining a target function, solving the target function and acquiring operation power of a heat-accumulating-type electric boiler tracking wind power wind curtailment mode used for reducing wind power wind curtailment, a capacity of the energy storage system and maximal charge and discharge power. In the invention, the energy storage system can dynamically absorb and release electric energy so that power grid dispatching is realized in real time. When wind power output is excessive, electric energy is stored so as to reduce wind curtailment. When wind power output is insufficient, the electric energy is released so as to satisfy a heat-accumulating-type electric boiler demand so that operation power of the heat-accumulating-type electric boiler is adjusted as little as possible. The wind power wind curtailment is reduced and a wind power utilization rate is increased. The energy storage system is used to coordinate heat-accumulating-type electric boiler consumption wind power wind curtailment, and simultaneously heat supply is provided for residents and environmental pollution is reduced.

Description

technical field [0001] The invention relates to a technology for reducing wind power curtailment, in particular to a method and device for reducing wind power curtailment. Background technique [0002] In recent years, with the continuous growth of wind power installed capacity, the contradiction between supply and demand of source and load in the three northern regions of China has become prominent, and the phenomenon of wind abandonment has occurred from time to time. Insufficient wind power local consumption capacity has become the main factor restricting the development of wind power. By the end of 2014, the accumulative grid-connected capacity of full-caliber wind power across the country had reached 95.8GW, a year-on-year increase of 25.6%. However, the utilization hours of domestic grid-connected wind power equipment in the next year was only 1905h, a year-on-year decrease of 120h. Difficult power balance. Especially during the winter heating period, the peak-shaving...

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Problems solved by technology

[0003] Since wind power output has the characteristics of "anti-peak regulation", and the minimum peak regulation limit of thermal power units is 50%-60%, this makes a large amount of abandoned wind even if the thermal power units operate at the lower limit of the load during the low load period. Peak resources are difficult to meet the needs of wind power consumption

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