Battery power energy storing device for smoothing output power of wind power generation

Abstract

The invention discloses a battery power energy storing device for smoothing the output power of wind power generation, and in particular relates to a battery power energy storing system for smoothing the output power of the wind power generation. The battery power energy storing device for smoothing the output power of the wind power generation comprises an energy storing battery pack and a monitoring system, wherein the power storing battery pack and an output circuit of a wind-electricity system are connected to an AC bus in parallel. The battery power energy storing device is characterized in that a power distribution device is connected between the energy storing battery pack and the AC bus; and the monitoring system is connected with an electric power protection device. The battery power energy storing device coordinates the output power of the wind power generation so that the battery power energy storing device effectively reduces the impact and the influence on a power network during wind power integration, enhances the consistency between the wind-electricity output power and a prediction, and ensures the credibility of an electric power supply. The energy storing device also reduces the spare capacity of an electric system, enhances the running economy of the electric system and improves the wind-electricity receiving capacity of the electric system.

Description

technical field [0001] The invention relates to a wind power generation energy storage system, in particular to a battery power storage system that smoothly outputs wind power generation power. Background technique [0002] As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. China's wind energy reserves are large and widely distributed. The wind energy reserves on land alone are about 253 million kilowatts. In recent years, China's grid-connected wind power has developed rapidly. Due to the randomness and intermittent nature of wind energy, the output of wind turbines fluctuates frequently, and the reliability of wind farm output is also poor. If the proportion of wind power is too large, the pressure on frequency regulation and peak regulation of the power grid will increase, and the long-distance power transmission of the power grid will increase. The technical requirements and operating costs of electricity...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of short-term fluctuations in wind power generation power in the prior art, the present invention provides a battery power energy storage device that can smooth the output power of wind power generation. It includes an energy storage battery pack and a monitoring system. The energy storage battery pack is connected in parallel with the output line of the wind power system on an AC bus. It is characterized in that a power distribution device is connected between the energy storage battery pack and the AC bus bar, and the monitoring system is connected with power protection. device

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