Testing system for testing wind generating set pitch system

Abstract

The invention discloses a testing system for testing a wind generating set pitch system comprising an upper computer, a pitch system and a loading system, wherein the pitch system and the loading system are respectively connected to the upper computer through communication cables, and the pitch system is connected with the loading system; the pitch system comprises a pitch drive and a pitch motor, and the pitch drive is connected with the pitch motor; the loading system comprises a loading controller, a DC motor and a torque speed sensor, the loading controller is a DC speed regulator, the upper end of the DC speed regulator is connected with an AC power supply, the lower end of the DC speed regulator is connected with a DC motor, the DC motor is connected with a pitch crank set through a booster engine, and the pitch crank set is connected with the pitch motor through a speed reducer; the torque speed sensor is respectively connected with the upper computer, the booster engine and the pitch crank set, and the torque speed sensor and the pitch drive are connected with the upper computer through communication cables; and the testing system tests the blower pitch system in a workshop by simulating the actual working condition.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a test system for testing the pitch system of a wind power generating set. Background technique [0002] At present, variable speed and pitch has become the main control method of wind turbines. The pitch system can control the blade pitch angle of wind turbines to automatically adjust with the wind speed above the rated wind speed. On the one hand, it reduces the impact of wind force on the fan, and at the same time ensures the stability of the power output of the generator to obtain the maximum energy. The pitch system is further divided into hydraulic pitch and electric pitch. The market share of electric pitch in my country is obviously higher than that of hydraulic pitch. However, due to the impossibility of installing propellers in the workshop, many complete machine factories only conduct action tests on the pitch control system under no-load when the fans l...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that due to the impossibility of installing blades in the factory during the ex-factory test of the prior art, when the fan leaves the factory, only the no-load test is performed on the pitch system, and the system function under loading cannot be verified, which is difficult to guarantee the quality of the ex-factory products, and even There is a problem with the overall safety of the unit; provide a test system for the wind turbine pitch system test; the test device simulates the actual working conditions in the workshop to load the fan pitch system, and can realize the pitch change under loading System test, the generated electric energy is fed back to the power grid, and the data is sent back to the host computer for analysis and judgment. The effect of energy saving is remarkable, and it is used in the factory test of pitch change

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