Stand-by safety chain monitoring and protecting device for wind power generation control system

Abstract

The invention discloses a stand-by safety chain monitoring and protecting device for a wind power generation control system, comprising a power supply, a cable-twisting switch, an engine-room vibration protection switch, a grid protection switch, a converter protection switch, an engine room and tower support emergent stop button, a distributed heartbeat signal monitoring switch, a rotary speed protection switch and a safety chain relay, wherein the power supply generates power signals and is respectively connected in series with the cable-twisting switch, the engine-room vibration protection switch, the grid protection switch, the converter protection switch, the engine room and the tower support emergent stop button, the distributed heartbeat signal monitoring switch, the rotary speed protection switch and the safety chain relay. The monitoring and protecting device adopts an active safety design, runs independent of a PLC system and monitors relevant signals at real time; and when incidents endangering the safety of a machine set occur, the monitoring and protecting device actively controls a pitch system to realize full feathering, thereby achieving the safe shut-down of the machine set.

Description

technical field [0001] The invention relates to a unit safety control of a large-scale wind power generator control system, in particular to a backup safety chain monitoring and protection device for a wind power generation control system. Background technique [0002] At present, the development and utilization of renewable energy, especially wind energy, has been highly valued by countries all over the world. Wind energy is a kind of clean energy. It is caused by the uneven heating of the earth's surface atmosphere caused by solar radiation, which causes the difference in atmospheric pressure. Its essence is a manifestation of solar energy. my country is rich in wind power resources, and the domestic wind power industry developed rapidly from 2006 to 2009. According to the statistics of the Wind Power Industry Association, in 2008, more than 5,000 new large-scale wind turbines were added in my country. At present, many domestic complete machine manufacturers have introduce...

AI Technical Summary

Problems solved by technology

At present, there are deficiencies in the safety protection of large-scale wind turbines. In the case of failure of the wind turbine control system, safe shutdown cannot be achieved.

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