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Safety chain control system

A control system and safety chain technology, which is applied in the field of electrical and software dual safety chain control systems, can solve the problems of complex and slow shutdown and startup, and achieve the effect of ensuring safety and reliability and improving work efficiency

Active Publication Date: 2009-11-04
苏州新能健电气有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, because the pitch control system will generate an alarm signal, the entire pitch control system needs to be shut down for inspection, and the shutdown and startup of the pitch control system is a very complicated and slow process, so it is necessary to take double protection in the pitch control system , that is, to pre-check the necessary electrical connections and signal transmissions before starting the pitch control system

Method used

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Embodiment Construction

[0016] The invention discloses a safety chain control system, such as figure 2 As shown, it includes the lightning protector -X1 located in the control box and the two contactors -1K1, -1K2 located in the axle box. The lightning protector -X1 is connected to the signal output terminal of the main control system of the wind power pitch device - 0. Same as the prior art, the main control system transmits the "EFC" start signal to the axle box, and the contactors -1K1 and -1K2 are powered on after receiving the "EFC" start signal and transmit the "RFG" signal to connect with them drive.

[0017] The difference from the prior art is: before the main control system transmits the "EFC" start signal to the axle box, it must go through the overspeed monitoring relay-1A1 and the safety relay-1A2.

[0018] As shown in the figure, the auxiliary normally open contact 13 of the overspeed monitoring relay-1A1 is connected to the lightning protection device-X1 for receiving the "EFC" start...

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Abstract

The invention discloses a safety chain control system, which comprises an overspeed monitoring relay and a safety relay which are connected between a control box and an axle box, wherein the overspeed monitoring relay detects whether a PLC control system has a fault; and the safety relay detects whether an I / O end of the PLC control system has input / output signals. The safety chain control system has the following advantages that: a double safety chain control system is adopted, the normal operation of the PLC control system must be met before a master control system sends a pitch-controlled starting signal, and a pitch-controlled system can be started, so the safety and the reliability of the system are ensured, and the work efficiency is improved.

Description

technical field [0001] The present invention relates to a wind power generating equipment, in particular to a control system of electric and software double safety chains in a wind power pitch control device. Background technique [0002] As non-renewable energy is facing the dilemma of depletion worldwide, in order to meet the needs of industrial production and human life, people's attention and utilization of renewable energy such as solar energy, wind power, and hydropower have been increasing day by day. Among them, wind power generation is a relatively mature energy development technology, especially in areas such as plateaus and coastal areas, which are widely used. [0003] In a modern wind power generation system, the pitch control unit is a very important part, it can be said to be the core unit. Due to the change of natural wind speed, if the fan is to rotate smoothly and uniformly to generate electricity, it is necessary to efficiently and accurately control the ...

Claims

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Application Information

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IPC IPC(8): F03D7/00H02H9/04
CPCY02E10/723Y02E10/72
Inventor 傅建民王政
Owner 苏州新能健电气有限公司
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