Paddle interlocking circuit of variable pitch system

Abstract

The invention discloses a variable pitch system blade interlocking circuit. In daily maintenance, the three paddles are likely to be located at the 0-degree position at the same time, and if the angles of the paddles are adjusted to the 0-degree position at the same time, the wind turbine generator loses the pneumatic braking capacity. The system comprises three relays, a change-over switch (4) and three variable-pitch motors, the change-over switch is provided with three output ends, each output end corresponds to one relay and one variable-pitch motor, each output end outputs two branches, one branch is connected with a corresponding relay coil, and the other branch is connected with a corresponding variable-pitch motor coil. And the other relay is connected with the normally closed contacts of the other two relays in series and then is connected with the corresponding variable pitch motor. The blade interlocking device is used for interlocking the blades of the variable-pitch system.

Description

technical field [0001] The invention relates to a blade interlocking circuit of a pitch control system. Background technique [0002] The model of the wind turbine currently used in the wind farm is MY1.5S / Se. In the maintenance mode of the wind turbine, the pitch system is responsible for the main braking function of the wind turbine’s safe shutdown. During routine maintenance, there is a possibility that the three blades are in the 0° position at the same time. , if the angle of the blades is adjusted to 0 degrees at the same time, the wind turbine will lose its aerodynamic braking capability, which will cause serious hidden dangers to the safety of maintenance personnel. Affected by some improper operations and environmental factors in the periphery, it may lead to machine crash. Death. Contents of the invention [0003] The object of the present invention is to provide a blade interlocking circuit of a pitch control system to solve the above existing problems. [000...

AI Technical Summary

Problems solved by technology

[0002] The model of the wind turbine currently used in the wind farm is MY1.5S / Se. In the maintenance mode of the wind turbine, the pitch system is responsible for the main braking function of the wind turbine’s safe shutdown. During routine maintenance, there is a possibility that the three blades are in the 0° position at the same time. , if the angle of the blades is adjusted to 0 degrees at the same time, the wind turbine will lose its aerodynamic braking capability, which will cause serious hidden dangers to the safety of maintenance personnel. Affected by some improper operations and environmental factors in the periphery, it may lead to machine crash. Death

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