Environmental control system of wind generating set and control method of environmental control system

Abstract

The invention provides an environmental control system of a wind generating set and a control method of the environmental control system. The environmental control system comprises a liquid cooling circulating system and an air cooling circulating system. The liquid cooling circulating system comprises an external heat exchanger, a pump station and an electric generator heat exchanger, wherein the external heat exchanger is disposed outside a cabin of the wind generating set, and the pump station and the electric generator heat exchanger are disposed inside the cabin. An outlet side pipeline of the pump station is connected to an inlet side pipeline of to-be-cooled equipment; an outlet side pipeline of the to-be-cooled equipment is connected to an inlet side pipeline of the electric generator heat exchanger; an outlet side pipeline of the electric generator heat exchanger is divided into two branches, one branch is directly connected to an inlet of a three-way valve, and the other branch is connected to the other inlet of the three-way valve through the external heat exchanger; and an outlet of the three-way valve is connected to an inlet side pipeline of the pump station. The air cooling circulating system comprises the electric generator heat exchanger and a pipeline which guides air in inner space of an electric generator into the electric generator heat exchanger. By means of the environmental control system of the wind generating set and the control method of the environmental control system, the environmental adaptability of the wind generating set is improved.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an environment control system and a control method for a wind power generating set. Background technique [0002] At present, wind turbines manufactured by mainstream wind turbine manufacturers still adopt a decentralized arrangement. Specifically, as figure 1 As shown, the generator 1 is installed on the front portion of the nacelle 3 by being connected to the base 2, and the heat exchanger 4 for heat dissipation of the generator is arranged in the nacelle 3 near the rear of the nacelle 3, the switch cabinet 5, the frequency conversion cabinet 6, The hydraulic station 7 and the engine room control cabinet 8 are arranged in the engine room 3, and the frequency conversion cabinet 6, the hydraulic station 7 and the engine room control cabinet 8 are located in the base 2, the converter cabinet 9, the box transformer 10, the main control cabinet 11, the pump station 12...

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Problems solved by technology

[0003] Adopting such a decentralized arrangement has the following disadvantages: the low-voltage power cable 15 used to connect the generator 1, the converter cabinet 9, and the box transformer 10 is relatively long and additionally needs to lead out 400V power distribution from the bottom of the tower to the engine room 3 Cables and control cables lead to higher cable costs; during hoisting, it is necessary to assemble the bottom of the tower and complete the wiring work between the box transformer, converter cabinet and the main control cabinet, and the main components of the wind turbine cannot be assembled before hoisting A complete electrical system and its control system, so a lot of pre-commissioning work cannot be carried out, resulting in the need for a lot of commissioning work after the hoisting is completed, prolonging the construction period of the wind farm; the current environmental control system of the wind power generation group is usually for The converter cabinet and box transformer at the bottom of the tower are cooled by water cooling, and the generator is cooled by air cooling or water cooling, while the main control cabinet at the bottom of the tower and the control cabinet in the nacelle are all connected to the inside of the wind turbine. The environment releases heat, so it is also necessary to control the temperature of the air in the internal environment of the wind turbine, and the wind turbines in cold regions or offshore have strict requirements on temperature and humidity, but because these components are scattered in the tower The bottom and the cabin, so the temperature of these dispersed areas needs to be controlled separately

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