Low-temperature start control method for wind generating set

Abstract

The invention discloses a low-temperature start control method for a wind generating set. When cut-in wind speed is reached and the starting conditions are not met due to low gearbox oil temperature or low generator winding temperature, the wind generating set enters a cold start mode from a standby mode, a gearbox heater and a generator heater are started, and fan blades open at certain angle to allow a wind wheel to idle at certain speed. Lubricating oil and grease are heated at higher speed by lubricating oil and grease in a rotary stirring gearbox of the wind generating set. Cycling of the lubricating oil can also be quickened by a lubricating oil pump, the lubricating oil is heated at higher speed, and the cold start mode allows the wind generating set to start at higher speed at the low temperature, the starting time is about halved, a fan is better protected, labor is reduced for fan maintainers, grid connection response of the wind generating set is better, power generation of the wind generating set is higher, and the low-temperature start control method for the wind generating set is suitable for popularization and application in cold areas.

Description

technical field [0001] The invention relates to the field of wind power start-up control, in particular to a low-temperature start-up control method for a wind power generating set. Background technique [0002] Most of the wind turbines are installed in remote mountainous areas such as Inner Mongolia, Northeast China, Hebei, Gansu and Ningxia. In winter, the outside climate is cold. When the unit is shut down in low temperature or restarted after a power outage, it will be difficult to start the unit, take a long time to start, or report a temperature fault, etc. After investigation and wind field feedback data analysis, there are two main reasons for the failure to start normally at low temperature: [0003] 1. The lubricating oil of the gearbox takes a long time to heat up; [0004] 2. The generator winding takes a long time to heat up. [0005] When starting at low temperature, sometimes in order to speed up the grid connection speed of the unit, the fan can only be f...

AI Technical Summary

Problems solved by technology

[0003] 1. The lubricating oil of the gearbox takes a long time to heat up;

[0004] 2. Generator winding heating time is longer

[0005] When starting at low temperature, sometimes in order to speed up the grid connection speed of the unit, the fan can only be forced to start by artificially modifying the temperature control parameters, but this method may cause damage to the unit

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