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Safety chain unit for double-fed wind generating set

A doubly-fed wind power generation and safety chain technology, which is applied in the control of wind turbines, wind turbines, wind power generation, etc., can solve problems that affect the power generation efficiency of the unit and cannot work normally, so as to achieve simple implementation, reduce failure rate, and reduce downtime the effect of time

Inactive Publication Date: 2012-07-25
北京科诺伟业科技股份有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to overcome the shortcomings of the existing single-channel safety chain system that cannot work normally after failure and affect the power generation efficiency of the unit, and propose a safety chain system with dual-channel input and output, so as to make more strict monitoring of the extreme conditions of the fan Protect

Method used

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  • Safety chain unit for double-fed wind generating set
  • Safety chain unit for double-fed wind generating set
  • Safety chain unit for double-fed wind generating set

Examples

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] figure 1 Provided is a structural diagram of a control system applying the safety chain unit of the present invention. The doubly-fed wind turbine control system adopts a two-cabinet design, which includes two parts: the tower base cabinet and the engine room cabinet. The control system mainly includes tower base control unit, engine room control unit, safety chain unit, converter communication unit, pitch system communication unit, central monitoring system (SCADA) communication unit and human-machine interface (HMI) unit. The tower base control unit is placed in the tower base cabinet, and the engine room control unit is placed in the cabin cabinet. The tower base cabinet control unit and the engine room control unit are connected by optical fiber Ethernet, and two industrial Ethernet switches are added between the tower base control...

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Abstract

The invention relates to a safety chain unit for a double-fed wind generating set, which comprises a power supply (1), a safety relay (2), a first set of safety contacts (3), a second set of safety contacts (4), a safety chain reset button (5), and a safety chain output control relay unit (6), wherein the output of the power supply (1) is connected to a power end of the safety relay (2); normallyclosed ends of the first set of safety contacts (3) and second set of safety contacts (4) are respectively connected to two input channels (S21, S22, S31, S32) of the safety relay (2); the reset button (5) is connected to reset ports (S33, S34) of the safety relay; two coils (2K1, 2K2) of the safety chain output control relay unit (6) are in parallel connection and are connected to output channels (13, 14, 23, 24) of the safety relay; two input channels (S21, S22, S31, S32) work at the same time; and single input channels (S11, S12) in parallel connection with the two input channels (S21, S22, S31, S32) are arranged in the safety relay (2).

Description

technical field [0001] The invention relates to a safety chain unit of a wind power generating set. Background technique [0002] At present, in the control systems of various types of wind turbines, the safety chain circuit adopts the form of single-channel input and single-channel output, and the level and safety performance are low. When a node in the safety chain fails, it will cause The unit is shut down until system maintenance is completed. Or at the cost of sacrificing the safety of the unit, short-circuit or shield the fault point in exchange for the temporary work of the unit. Moreover, for the single-channel output safety chain, when the contacts of the safety chain loop output relay stick together, it will cause no output or constant output of the safety chain, thus threatening the safety of the unit. [0003] Patent 201010017128.0 proposes a single-channel security chain structure. The safety system includes power supply, button cable switch, vibration protec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 冯成谷海涛王洪彬
Owner 北京科诺伟业科技股份有限公司
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