Hydraulic control frequency stabilized wind power generation apparatus

Abstract

The invention relates to a hydraulic control frequency stabilized wind power generation apparatus. A system comprises a wind energy collection unit, an energy conversion and remote distance transmission unit and a hydraulic control frequency stabilized power generation unit, wherein the wind energy collection unit converts wind energy into mechanical energy, the energy conversion and remote distance transmission unit is connected with the wind energy collection unit, converts the mechanical energy to hydraulic energy, and realizes the remote distance transmission of the wind energy by adopting a hydraulic transmission principle, and the hydraulic control frequency stabilized power generation unit is connected with the energy conversion and remote distance transmission unit through a hydraulic pipeline, can convert the hydraulic energy into the mechanical energy, and can also convert the mechanical energy into electric energy, wherein the energy conversion and remote distance transmission unit and the hydraulic control frequency stabilized power generation unit are made into a closed type hydraulic loop through the hydraulic pipeline. The invention adopts the initial phase angle change arrangement of a hydraulic pump, and reduces the flow pulsation output by the hydraulic energy. The invention adopts the optimal matching of controlling the entering flow rate of a hydraulic motor and the output volume of the hydraulic motor, generates the constant rotating speed output of the hydraulic motor, drives an ordinary power generator set for generating constant frequency electric energy, and improves the quality of the electric energy.

Description

technical field [0001] The invention relates to a device for converting pulsating mechanical energy into frequency-stabilized electric energy, in particular to a liquid-controlled frequency-stabilized wind power generation device. Background technique [0002] At present, as a very important green energy, the effective utilization of wind energy has been widely valued by countries all over the world. Widely used wind power generation devices generally use primary energy conversion technology to convert wind energy into mechanical energy to drive generators to generate electricity. Due to the extremely unstable wind speed in nature, it directly affects the stability of the output power frequency of wind turbines, and low-quality power cannot be directly used in electrical appliances or sent to the grid. Focusing on the need to improve the quality of wind power generation, the pitch adjustment technology of wind turbines, speed increasers, AC excitation variable speed constan...

AI Technical Summary

Problems solved by technology

[0003] 1. The speed increaser is expensive. Due to the low wind speed, the blades in the wind power generation device can only rotate at a low speed, while the existing ordinary generators require a high speed.

In order to solve this contradiction, the existing wind power generation device usually adopts a speed increaser to increase the speed, but the speed increaser is expensive;

[0004] 2. The power generation frequency of ordinary generators is unstable because the speed increaser is a speed change mechanism with a fixed speed ratio. change, affecting the quality of power generation;

[0005] 3. The cost of AC excitation variable speed constant frequency double-fed generator technology is relatively high In order to overcome the influence of wind instability on power generation quality, variable speed constant frequency double-fed power generation technology is adopted, which greatly increases the investment cost of existing wind power generation devices;

[0006] 4. The overall center of gravity of the wind power generation device is high. The generator and speed increaser in the existing wind power generation device are placed in the cabin at the top of the tens of meters high tower. The overall center of gravity of the system is very high, and it is very difficult to install and maintain the equipment The strength requirements of the tower and its foundation structure are very high, which increases the construction cost of the wind power generation system

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