Broken line testing and online monitoring system and method for blade lead of wind generating set

Abstract

The invention discloses a wind generating set blade lightning conductor disconnection test and online monitoring system and method. The system comprises a blade and a lightning conductor arranged in the blade, and the lightning conductor is arranged from the blade tip of the blade to the blade root of the blade; the system is characterized in that a passive sensing system is arranged at the blade tip of the blade, a high-frequency electromagnetic pulse device is arranged at the blade root, and the high-frequency electromagnetic pulse device comprises a high-frequency sensor; a unit edge terminal device is arranged at the hub; the high-frequency electromagnetic pulse device loads a high-frequency electromagnetic pulse signal to the lightning conductor, after the passive sensing system receives an electromagnetic pulse, the passive control chip sends out a carrier high-frequency pulse with a coding characteristic, and the carrier high-frequency pulse is reversely coupled to a blade tip of the lightning conductor through the sensor and is spread to a blade root along the lightning conductor. Collecting a carrier pulse signal by a high-frequency sensor at a blade root, and determining that the lightning conductor is not broken if a complete code of the carrier high-frequency signal can be received; through the system and the method, the lightning protection system of the fan blade can be monitored in real time, the efficiency is high, detection can be carried out without shutdown, and economic loss consumed by detection is reduced.

Description

technical field [0001] The invention belongs to the field of disconnection detection of a lightning protection wire of a wind power generating set, and more specifically relates to a breakage testing and online monitoring system and method of a blade lightning protection wire of a wind power generating set. Background technique [0002] With the continuous progress of my country's wind power generation technology and the continuous increase of demand for clean energy, my country's wind power enterprises have increased year by year in recent years, and the capacity of wind power generation units has continued to expand. As of December 2020, my country's installed wind power capacity has reached 281 million kilowatts, and there are more than 4,000 wind farms. Each wind turbine in a wind farm is the core asset of a wind power company, and wind power companies need daily maintenance to ensure the normal operation of the units. Among them, the blade blade down conductor is an im...

AI Technical Summary

Problems solved by technology

However, the current detection technology cannot detect the state of the blade down conductor in real time, so it is necessary to develop an online detection system for the blade down conductor of the wind turbine to improve the detection efficiency of the blade down conductor. Provide real-time status data of blade down conductors for wind farms

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