Summary of Research on Physical Evolution Mechanism of Lightning Discharge of Offshore Wind Farms

Abstract

Abstract:

Offshore wind power has become the most important development direction of wind energy, due to its advantages and the vast offshore wind resources. As a saturated industry, the onshore wind farm witnesses the flourish of offshore ones. However, there are still a mess of key issues remained to be solved, which attribute to the difference between offshore wind power generation and onshore one, one of which is that wind turbines are particularly vulnerable to lightning strokes, and it is one of severest threatens to the security of wind farms. This paper summarizes the characteristics of offshore wind farms in the aspects of the dimension, location of wind turbines and its marine environment. The recent progress of physical evolution mechanism of lightning discharge including the mechanism of leader propagation, lightning discharge characteristics of receptor and down conductors, damage mechanism of wind turbine blades and electromagnetic transient process of offshore wind turbines is also introduced to proposethe potential frontier subjectin this field.

Key words: Offshore wind power, lightning physics, leader progress, flashover characteristic, damage mechanism of wind turbine blades

CLC Number:

TM614

Guo Zixin,Li Qingmin,Yan Jiangyan,Ma Yufei,Siew Wah Hoon. Summary of Research on Physical Evolution Mechanism of Lightning Discharge of Offshore Wind Farms[J]. Journal of Electrical Engineering, 2015, 10(5): 10-19.

Figures/Tables 11

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机组容量/MW	轮毂高度/m	风轮直径/m	年产电量/（GW·h）
1.5	60~110	60~80	3.5
3	80~130	80~100	7.5
6	130~150	110~130	15
10	140~170	140~150	25