Telemetering method and testing device of dynamic signals of rotating blades of wind driven generator

Abstract

The invention discloses a telemetering method and a testing device of dynamic signals of rotating blades of a wind driven generator, and mainly relates to the field of monitoring and testing of a wind generating set. A dynamic signal acquisition device comprises a telemetering main machine and blades mounted on a shaft of a generator, and further comprises a data acquisition control module, wherein the telemetering main machine is provided with a telemetered signal transmitting antenna, a signal acquisition main machine and a battery which are sequentially connected from the head end to the tail end; a laser trigger and a communication data interface are mounted on the circumferential side of the signal acquisition main machine; sensors are arranged on the blades; and the data acquisition control module comprises a data analysis computer, a power quality tester, a loading box, a wireless router and a laser transmitter. The testing device has the beneficial effects that the testing is carried out through the combination of wired acquisition and wireless transmission of the dynamic signals of the rotating blades, the control of different incoming flow wind speeds, different rotation speeds and top speed ratios can be achieved, and the functions of acquisition and analysis of multiple working conditions and multiple parameters are achieved.

Description

technical field [0001] The invention relates to the field of monitoring and testing of wind power generating sets, in particular to a method for telemetry of dynamic signals of rotating blades of a wind power machine and a testing device. Background technique [0002] Wind turbines absorb kinetic energy from the wind and convert mechanical energy into electrical energy through the rotation of the blades. The blade is the main load-bearing part of the wind turbine, and almost all the force must be transmitted through the blade. The blade will inevitably vibrate and bear the action of alternating dynamic stress, making the blade the most easily damaged part of the wind turbine, and frequent blade fractures. Therefore, obtaining the real-time status of the dynamic parameters of the wind turbine blades and ensuring the safe, stable and durable operation of the wind turbine blades in harsh environments has become an important requirement for the development and growth of wind pow...

AI Technical Summary

Problems solved by technology

The slip ring lead-in device uses physical contact to lead the signal out, which requires the contact friction of the dynamic and static contact ring surface, and has high requirements for the material and processing accuracy of the slip ring. Since the signal is led out by the dynamic and static joint surface, the signal transmission is easily disturbed. And it is difficult to achieve high-speed and long-life slip rings

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