Monitoring method for wind power plant energy storage system

Abstract

The invention provides a monitoring method for a wind power plant energy storage system. According to the method, the generated power of a wind power plant can be predicted, the load changing situation is predicted, the battery capacity of a storage battery module is detected in real time, the running situation of a power distribution network is obtained in real time, the most appropriate control strategy is formulated and implemented, it is guaranteed that the wind power plant stably outputs power, the safety of the energy storage system is improved, and the service life of the energy storage system is prolonged.

Description

Technical field [0001] The invention relates to a monitoring method for a wind farm energy storage system. Background technique [0002] In recent years, wind power has attracted the attention of countries all over the world due to its advantages of environmental protection and abundant resources, and has become an important source of non-fossil fuel power generation. However, wind energy has the characteristics of randomness and intermittentness. It is difficult for an independent wind power generation system to provide stable and continuous power output, and the fluctuation is large. Direct integration into the grid will inevitably affect the safe and stable operation of the power system. Therefore, from the perspective of power grid security, it is an inevitable trend for future wind power generation to introduce energy storage devices to wind farms to stabilize their power fluctuations and to establish wind-storage combined power generation systems. [0003] The wind st...

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Problems solved by technology

[0003] The wind storage system stabilizes the power fluctuation of the wind farm by quickly absorbing the remaining energy or supplementing the power shortage through energy storage. Therefore, when the energy storage system is used to stabilize the power fluctuation of the wind farm, it cannot be guaranteed to be charged and discharged regularly. , prone to overcharging and overdischarging, which will not only affect its service life and increase input costs, but also may make its charging and discharging capacity insufficient when the power fluctuates violently, affecting the safety of wind power grid-connected operation

[0004] The wind storage system stabilizes the power fluctuation of the wind farm by quickly absorbing the remaining energy or supplementing the power shortage through energy storage. Therefore, when the energy storage system is used to stabilize the power fluctuation of the wind farm, it cannot be guaranteed to be charged and discharged regularly. , prone to overcharging and overdischarging, which will not only affect its service life and increase input costs, but also may make its charging and discharging capacity insufficient when the power fluctuates violently, affecting the safety of wind power grid-connected operation

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