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

A technology of battery energy storage and operation method, applied in the direction of AC network load balancing, etc., can solve the problems of polluting gas emission, poor receiving load capacity, and inability to convert wind energy into electric energy, etc.

Active Publication Date: 2018-05-15
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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  • Application Information

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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 generati

Method used

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

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Embodiment Construction

[0060] Taking the data of wind curtailment in a region with severe wind curtailment as an example, calculate the operating status of its large-scale energy storage and battery energy storage systems in one day: verify the coordinated operation method of wind curtailment, large-scale electric heat storage and battery energy storage proposed in the present invention correctness.

[0061] Step 1: Data Acquisition

[0062] The daily abandoned air volume is 1539.9Mw.h, the heat storage efficiency of the electric boiler is 98.14%, the electric boiler is 50x21MW, the maximum heat storage power of each electric boiler is 20.79MW, the minimum heat storage power is 18.9MW, the distance between the electric boilers and the average temperature of the environment -1.6°C, the distance between electric boilers is d=8m.

[0063] Battery charging efficiency τ 1 =82.51%, the discharge efficiency of the battery τ 1 =88.27%, the number of batteries N=290, and the average distance between each ...

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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...

Claims

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Application Information

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IPC IPC(8): H02J3/28H02J3/32
CPCH02J3/28H02J3/32
Inventor 葛维春李景瑞李家珏张铁岩史松杰张艳军王顺江罗桓桓滕云张凡赵洋
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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