Abstract
China’s coastal areas are rich in wind energy resources, and there is a huge market demand for wind power generators. However, due to the impact of typhoons every summer, the wind farms are cut off, causing serious damage to the wind turbines and causing significant economic losses. Based on optimizing the yaw system under typhoon conditions, this paper configures and selects the capacity of diesel generators. First, this article introduces the structure and main functions of the yaw control system. Secondly, through the study of the under-stage wind field model, the algorithm of wind speed extreme value and the calculation method of yaw angle and yaw direction are proposed, and hill climbing algorithm is introduced to optimize the work of the yaw control system. Then, a method for calculating the actual power of a single yaw control system is introduced. On this basis, the capacity configuration plan of the standby diesel generator set was determined, so that it can meet the normal yaw work of the whole field yaw system in the event of a power outage in the field to ensure the safety of the wind turbine.
Highlights
The coastal areas are rich in wind energy resources, but the operation and maintenance of wind farms are very difficult due to the frequent typhoons
If the wind farm is in the state of power failure, how to ensure the reliable operation of the yaw system of wind turbines in coastal areas, realize the protection of wind turbines, and reduce the economic loss of wind farms is the key to the construction of wind farms in coastal areas under extreme working conditions
In order to ensure that the wind turbine is not damaged under typhoon conditions, the minimum output value of the wind turbine is calculated based on the improved mountain-climbing algorithm, so as to minimize the load borne by the wind turbine
Summary
The coastal areas are rich in wind energy resources, but the operation and maintenance of wind farms are very difficult due to the frequent typhoons. The existing literature only estimates the damage of typhoon conditions, and only adopts the method of mechanical reinforcement for prevention and control measures, without considering the damage of wind turbine generators through yaw system. To this end, this paper firstly optimizes the yaw system of wind turbines, realizes the optimal control of yaw system in the face of different wind direction and wind speed, and realizes the optimal type and capacity configuration of diesel generator set according to the optimized yaw system
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