Lightning monitoring device for wind turbines

Abstract

The invention provides a thunder and lightning monitoring device of a wind power generator set. The thunder and lightning monitoring device comprises an optical fiber sensor, a thunder and lightning analyzer, a first optical fiber and a second optical fiber; the first optical fiber and the second optical fiber are connected between the optical fiber sensor and the thunder and lightning analyzer; the optical fiber sensor is arranged above an anti-thunder down lead which is arranged on the root portion of a blade; the thunder and lightning analyzer is used for sending first optical signals to the optical fiber sensor through the first optical fiber, receiving returned second optical signals through the second optical fiber and performing analysis on the second optical signals to generate thunder and lightning data. According to the thunder and lightning monitoring device of the wind power generator set, the safe accurate monitoring on the thunder and lightning condition of the wind power generator set can be achieved through the optical signal transmission and the optical measurement based on the Faraday's law of electromagnetic induction.

Description

technical field [0001] The invention relates to a lightning monitoring device, in particular to a lightning monitoring device for a wind power generating set. Background technique [0002] Wind energy is currently one of the renewable and clean energy sources with the most conditions for large-scale development. However, since wind turbines work in a natural environment, they will inevitably be affected by natural disasters. With the rapid development of modern science and technology, the capacity of a single wind turbine is increasing. In order to absorb more energy, the height of the hub and the diameter of the impeller also increase, which also increases the risk of wind turbines being struck by lightning. The huge energy of the wind turbine will cause damage to the blades of the wind turbine, insulation breakdown of the generator, and burnout of the control components, which has become the most harmful disaster in nature to the safe operation of the wind turbine. [000...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no lightning monitoring device installed on the wind turbine, which makes it impossible to accurately judge the law of lightning and implement effective lightning protection measures

In the past, the sensors and wires used to monitor lightning use metal sensors and metal wires. During the monitoring process, induced lightning current will be generated, which will damage the metal sensors and metal wires, and will also damage the control system.

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