Hybrid energy storage system used for restraining fluctuation of clustering wind power plant power output

Abstract

The invention discloses a hybrid energy storage system used for restraining fluctuation of clustering wind power plant power output. The hybrid energy storage system used for restraining the fluctuation of the clustering wind power plant power output solves the problem that an independent energy storage device can not effectively restrain the multi-time-scale fluctuation of the clustering wind power plant power output due to the single property of the independent energy storage device. The hybrid energy storage system used for restraining the fluctuation of the clustering wind power plant power output is composed of a flywheel energy storage device and a heat insulation air compression energy storage device, wherein the flywheel energy storage device changes rapidly and capacity of the flywheel energy storage device is small and the heat insulation air compression energy storage device changes slowly and capacity of the heat insulation air compression energy storage device is large. The flywheel energy storage device is used for restraining fast-changing components in the wind power plant power output and the heat insulation air compression energy storage device is used for restraining slow-changing components in the wind power plant power output. An effective charge-discharge power sequence of each device in the hybrid energy storage system can be generated according the relation between the clustering wind power plant power output and load requirements, effective charge-discharge operation is carried out on each device, optimal distribution of the multi-time-scale fluctuation components in the wind power plant power output is achieved, the level of grid capacity of wind electricity is improved, and high-efficient usage of clean wine energy is achieved.

Description

【Technical field】 [0001] The invention belongs to the field of renewable energy utilization, and relates to a hybrid energy storage system for smoothing power output fluctuations of clustered wind farms. 【Background technique】 [0002] With the depletion of traditional coal, oil, natural gas and other fossil energy reserves, and the growing problem of greenhouse gases emitted by fossil fuel combustion, energy supply and environmental protection have become the bottleneck restricting social and economic development at this stage, and the development of renewable energy utilization The related research is urgent. Due to its mature technology and abundant wind energy resources, wind power has become the fastest growing renewable energy utilization method in the world. In recent years, my country's wind power industry has developed rapidly, and it has the characteristics of clustered installed capacity of wind power bases, distant spatial distribution from load centers, and ran...

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Problems solved by technology

However, wind power fluctuations contain fluctuation components of multiple time scales, and the characteristics of independent energy storage devices are relatively single, so it is difficult to match the real-time fluctuations of wind power

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