Coordinated operation method for wind curtailment, large-scale electric heat storage and battery energy storage

Abstract

The invention discloses a coordinated operation method for the wind curtailment, the large-scale electric heat storage and the battery energy storage and belongs to the field of the digestion and thestorage of the wind curtailment. According to the invention, the environment temperature and the electric heating conversion efficiency of an electric boiler, and the environment temperature and the state-of-charge data of a battery are acquired. The above acquired data are screened, and then the heat storage state and the electric energy storage state of the electric boiler and the storage are judged. Through considering the maximum value of the historical wind curtailment amount in combination with the predicted wind curtailment amount, the efficiency of electric boiler and battery energy storage equipment, a coordinated operation system for the wind curtailment and the large-scale electric heat storage, and the wind curtailment and the large-scale battery energy storage is established.Meanwhile, a proportion coefficient for the electric heat storage and the battery energy storage is calculated. In combination with the predicted wind curtailment amount, the efficiency of the electric heat storage and the battery energy storage is calculated. Based on the method, the efficiency of the electric heat storage and the battery energy storage can be reasonably distributed according tothe wind curtailment amount. As a result, the coordinated operation of the wind curtailment, the large-scale electric heat storage and the battery energy storage can be realized. The reasonable utilization of energy is realized, and the capability and the economic benefit of the digestion and the storage of the wind curtailment are effectively improved. The utilization of the clean energy is realized.

Description

technical field [0001] The invention belongs to the field of abandoned wind accommodation, and in particular relates to a coordinated operation method of abandoned wind, large-scale electric heat storage and battery energy storage. Background technique [0002] With the development of our country's social economy and the continuous development and progress of science and technology, the demand for energy is increasing year by year, which increases the consumption of natural energy, which makes the reserves of non-renewable resources such as coal, oil and natural gas decrease rapidly. While consuming natural energy, a large amount of polluting gas emissions are produced. If we want to achieve sustainable development, we must find clean energy sources that are rich in resources in our country to replace them. The power generation industry in our country mainly uses firepower. With the development of technology, combined with the actual situation in our country, China's electri...

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Problems solved by technology

[0002] With the development of our country's social economy and the continuous development and progress of science and technology, the demand for energy is increasing year by year, which increases the consumption of natural energy, which makes the reserves of non-renewable resources such as coal, oil and natural gas decrease rapidly. While consuming natural energy, a large amount of polluting gas emissions are produced. If we want to achieve sustainable development, we must find clean energy sources that are rich in resources in our country to replace them. The power generation industry in our country mainly uses firepower. With the development of technology, combined with the actual situation in our country, China's electric power industry regards wind power generation as the starting point. China's wind power resources are abundant, mainly distributed in the "Three North" regions with rich wind power resources. Although the resources are abundant, the problem of wind abandonment is serious and affects There are many reasons for this. Wind power generation depends on changing meteorological conditions, which is random and intermittent. Moreover, China's early receiving load capacity was poor, and wind energy could not be converted into electrical energy in time, resulting in a large amount of wind energy being wasted. Due to the characteristics of wind power output and Restrictions such as power system operation constraints, when a large amount of wind power is connected to the grid, will lead to a large amount of wind curtailment

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