High-power offshore wind generating set tower bottom cooling system and control method

Abstract

The invention relates to a high-power offshore wind generating set tower bottom cooling system and a control method. The cooling system comprises a water cooling circulation system and an air cooling circulation system. A heat exchanger of the water cooling circulation system is located outside a tower. The other parts of the water cooling circulation system are all sealed inside the tower. The interior of the tower is divided into three layers from top to bottom through two platform partition plates. Two water cooling energy consumption assemblies are located on the bottom layer and the highest layer respectively. Two air cooling power consumption devices are located on the platform partition plate of the middle layer. Fans below two heat exchangers inside the tower drive air inside the tower to form a circulating wind path between venting pipes and the two air cooling power consumption devices. Cool-heat exchange is conducted between cooling liquid in the heat exchangers inside the tower and the heat exchanger outside the tower, and intra-tower wind path circulation and water path circulation are coupled through the heat exchangers inside the tower. By the adoption of the integrated closed type circulation cooling system, devices inside the tower are prevented from being corroded in a salt-spray environment, a plurality of liquid cooling assemblies at the bottom of the tower are cooled simultaneously, and the air at the bottom of the tower is cooled through the heat exchangers inside the tower in cooperation with the intra-tower air circulation. The cooling system is suitable for simultaneous energy saving in the special offshore environment.

Description

technical field [0001] The invention relates to a cooling system, in particular to a tower bottom cooling system of a high-power offshore wind power generating set. Background technique [0002] With the development of onshore wind resources becoming increasingly saturated, offshore wind power is gradually becoming the focus of wind resource development in various countries. Compared with onshore wind power, offshore wind power has the advantages of stable wind resources, no land occupation, and good grid connection conditions. At the same time, it also faces challenges such as high cost, difficult maintenance, and harsh environmental conditions. [0003] In order to reduce the unit kilowatt investment cost of offshore wind power, increasing the unit power has become the consistent technical route of major wind turbine manufacturers. At present, the unit power of the main models of offshore wind turbines put into mass production in my country is concentrated at about 3~4MW. ...

AI Technical Summary

Problems solved by technology

[0005] The present invention is aimed at the problems of large cooling capacity, high reliability requirements, high cost reduction requirements and anti-corrosion problems faced by the cooling system of high-power offshore wind-driven generators, and proposes a tower-bottom cooling system and control method for high-power offshore wind-driven generators , an integrated closed-loop cooling system for overall control of the thermal environment at the bottom of the tower

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