Thunder and lightning online monitoring system of wind turbine generator system

Abstract

A thunder and lightning online monitoring system of a wind turbine generator system comprises an optical sensor, a thunder and lightning analyzer, a master control system, an optical fiber and the Ethernet, wherein the optical sensor is in communication with the input end of the thunder and lightning analyzer through the optical fiber, and the output end of the thunder and lightning analyzer is in communication with the master control system through the Ethernet. The optical sensor collects thunder and lightning signals only through optical measurement and signal transmission. The thunder and lightning signals output by the optical sensor are transmitted to the thunder and lightning analyzer through the optical fiber, and the thunder and lightning analyzer analyzes the received thunder and lightning signals into thunder and lightning signal data and outputs the thunder and lightning signal data. The Ethernet transmits the thunder and lightning signal data output by the thunder and lightning analyzer to the master control system. According to the system, the capacity of the wind turbine generator system to resist thunder and lightning risks is improved, and losses, caused by thunder and lightning, of the wind turbine generator system are reduced.

Description

technical field [0001] The invention relates to a monitoring device, in particular to an on-line lightning monitoring system for a wind power generating set. Background technique [0002] At present, wind energy is the renewable clean energy with the most conditions for large-scale development, and wind energy power generation provides the basis for the harmonious development of man and nature. Since wind power generators work in a natural environment, they will inevitably be affected by natural disasters. Due to the rapid development of modern science and technology, the capacity of a single wind turbine is getting larger and larger. In order to absorb more energy, the height of the hub and the diameter of the impeller also increase accordingly, which also increases the risk of being struck by lightning. Lightning has become a natural phenomenon. It is the most harmful disaster to the safe operation of wind turbines. The huge energy released by lightning can cause damage ...

AI Technical Summary

Problems solved by technology

At present, most wind turbine manufacturers in the world have not installed lightning online monitoring devices on wind turbines, resulting in the inability to make accurate judgments on the laws of lightning and implement effective lightning protection measures

Technicians focus on the protection of units that have been struck by lightning for a long time, but do not pay enough attention to units that have not been struck by lightning or have not been damaged

[0004] Conventional electrical signal measurement often uses current sensors or voltage transformers to transmit the collected signals to the main control system through wires, but this method cannot be applied to lightning current measurement, because the strong induced lightning current will seriously damage the current sensor or Potential transformers, and destroying the main control system through wires

[0005] Although lightning protection manufacturers have developed lightning monitoring products, the data storage card in the lightning monitoring device cannot realize real-time measurement, and the data storage card must be taken out to read the value with a card reader

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