Lightning protection system of wind generating set

Abstract

The invention provides a lightning protection system of a wind generating set. The system comprises a blade lightning protection device, an environment detection device, a fan controller and a cloud server, wherein the blade lightning protection device is arranged on a blade, the environment detection device is arranged on a cabin shell, the fan controller is arranged in a cabin, the environment detection device and the cloud server are both connected with the fan controller; the blade lightning protection device comprises a lightning arresters, a shielding body and a grounding conductor; thelightning arresters comprise a first lightning arrester and a plurality of second lightning arresters, the first lightning arrester is arranged at the blade tip of the blade, and the second lightningarresters are arranged at the blade surface of the blade; and the shielding body comprises a metal net and a flow guide strip, the first lightning arrester is connected with the metal net through theflow guide strip, and the metal net is further connected with the second lightning arresters and the grounding conductor. According to the lightning protection system, through cooperation of the metalnet and the lightning arresters, the blade can be more effectively prevented from being damaged by lightning stroke.

Description

technical field [0001] The invention relates to the technical field of lightning protection, in particular to a lightning protection system of a wind power generating set. Background technique [0002] Wind turbines are generally installed on open plains or mountain tops, making them more vulnerable to lightning strikes. Among them, the wind turbines have the highest risk of lightning strikes including the blades and the nacelle. At present, with the increasing capacity of wind turbines, the blades of wind turbines are getting longer and longer, which greatly increases the probability of being struck by lightning; therefore, blades are the components with the highest lightning risk of wind turbines, and the reliability of their lightning protection. It plays a decisive role in whether the unit can operate safely in the whole life cycle. Relevant literature shows that among the insurance claims of wind turbines in the United States in 2012, the proportion of blade damage due...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing lightning protection systems only rely on the lightning receptor to achieve the lightning protection effect, but the effect is still not ideal, especially when the length of the blade increases, it is still difficult to effectively prevent the blade from being struck by lightning only by the lightning receptor The damage caused by it is also very huge. In this case, how to more effectively prevent the property loss and power loss caused by lightning strikes is a very urgent problem for those skilled in the art.

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