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Safety chain control system for wind generating set

A technology for wind turbines and control systems, applied in the control of wind turbines, wind turbines, wind energy power generation, etc., can solve problems such as difficult and pure hardware link safety chain control, and achieve convenient observation and operation, improved reliability, and convenient operation. Effect

Inactive Publication Date: 2011-08-17
STATE GRID ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the safety chain of many wind turbines uses pure hardware links, but there are still some safety links that require accurate analog or digital signals, and it is difficult to use simple pure hardware links to realize safety chain control. The design of the safety chain control system puts forward higher requirements

Method used

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  • Safety chain control system for wind generating set
  • Safety chain control system for wind generating set
  • Safety chain control system for wind generating set

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Embodiment Construction

[0016] The invention proposes a safety chain control system, which includes a safety relay and an overspeed monitoring relay. The system block diagram of the present invention is as figure 1 As shown, there are two safety chain links connected with the safety relay PSR1, the first link includes the controller monitoring signal, other signals of the safety chain and the energy storage relay of the safety chain, etc., and the second link includes SM1 overspeed switch 2 and PLC overspeed switch 2,. The first link controls the entire safety chain status of the unit, and the second link controls the wind rotor retraction of the unit.

[0017] The overspeed monitoring relay SM1 includes two switch output channels and one analog output channel, and each output channel does not interfere with each other and is independent of each other. SM1 transmits the wind speed signal to the PLC through the analog output channel, and connects the output switch value calculated by the PLC to the ...

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Abstract

The invention discloses a safety chain control system for a wind generating set. The system comprises a safety power steering relay (PSR1) and an over-speed monitoring special mark relay (SM1), wherein the over-speed monitoring SM1 transmits a wind speed signal to a programmable logic controller (PLC) through an analogue output channel and accesses an output switching value which is calculated by the PLC to a safety chain. The safe operation of the system is guaranteed and the reliability of operation of the set is improved.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a safety chain control system for a wind power generating set. Background technique [0002] Under the circumstances that energy and environmental issues are getting more and more attention today, people pay more and more attention to using wind energy to generate electricity. With the continuous development of science and technology, wind power generation technology, especially wind power control technology, has developed rapidly around the world, and wind power generation has gradually embarked on a commercial development path of high power, light weight, low cost, and high reliability. The control system is the core component of the wind turbine and the fundamental guarantee for the safe operation of the wind turbine. Therefore, in order to improve the safety of the wind turbine operation, the safety and reliability of the control system must be caref...

Claims

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Application Information

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IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 田雷王文卓
Owner STATE GRID ELECTRIC POWER RES INST
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