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

A monitoring protection and control system technology, applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve the problem of inability to achieve safe shutdown, save cable connections, reduce fault points, and achieve the effect of safe shutdown

Inactive Publication Date: 2010-07-14
NANJING SCIYON AUTOMATION GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0018] A backup safety chain monitoring and protection device for a wind power generation control system, see figure 1 , the device includes a power supply 1, a twist switch 2, a cabin vibration protection switch 3, a grid protection switch 4, a converter protection switch 5, a cabin and tower emergency stop button 6, a distributed heartbeat signal monitoring switch 7, and a speed protection switch. switch 8 and safety chain relay 9. The power supply 1 is connected in series with each switch in sequence. The power supply 1 is set in the cabinet, and adopts Mingwei Company's 24V (10A) switching power supply to generate a 24V power supply signal. After the twist switch 2 is turned in place, the normally closed contact is disconnected, the cabin vibration protection switch 3 is normally closed after the vibration signal exceeds the limit, and the power grid protection switch 4 is normally closed after detecting abnormal voltage, current and frequency signals of the power grid T...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 刘国耀沈德明刘进波
Owner NANJING SCIYON AUTOMATION GRP
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