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Detection method and detection device of wind power variable pitch PLC

A detection device and detection method technology, which is applied in the direction of electrical program control, instrument, program control in sequence/logic controller, etc., can solve problems such as the inability to detect the PLC operating parameters of the pitch control system, and achieve the effect of avoiding repeated work

Active Publication Date: 2015-09-09
GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Some PLC manufacturers have designed a detection device to judge whether the PLC module is working normally, but they cannot detect the operating parameters of the pitch system PLC under special working conditions and requirements

Method used

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  • Detection method and detection device of wind power variable pitch PLC
  • Detection method and detection device of wind power variable pitch PLC
  • Detection method and detection device of wind power variable pitch PLC

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Embodiment Construction

[0044] specific implementation plan

[0045] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0046] Such as figure 1 As shown, the wind power variable pitch PLC detection device of the present invention mainly includes the main control PLC, the A#PLC group, the B#PLC group, the C#PLC group and the host computer. In addition, a variable resistor and an encoder can be connected for auxiliary detection.

[0047] Each PLC group is connected with a CAN communication cable and a DP communication cable (shown by the thick solid line in the figure) to realize information exchange between each PLC group; the modules in each PLC group communicate with each other through a serial bus Data interaction. The upper computer is connected to the main control PLC through a network cable (shown by the hollow arrow icon in the figure), and the status of each module can be viewed and analyzed in the visual...

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Abstract

The invention discloses a detection method and a detection device of a wind power variable pitch PLC. The detection method and the detection device comprise a main control PLC, three groups of functional PLCs of A#, B# and C#, and a hoist. The main control PLC is used as a detection terminal. All to-be-detected functional modules in a wind power variable pitch PLC replace corresponding normal modules in the main control PLC, the A# PLC, the B# PLC, and the C# PLC. By observing operation states of the main control PLC and all functional PLCs connected to the main control PLC, detection for DIO, RTD and SSI modules in the wind power variable pitch PLC is achieved. According to the invention, targeted test for the same kind of modules is finished at a time and cable overall plug-in pieces are used between the PLC module and other modules and between modules and an external device, thereby achieving one-time plug-in, so repetitive work of disconnection of wires and wiring of all channels of the PLC is removed.

Description

technical field [0001] The present application relates to a PLC detection method and a detection device, in particular to a wind power pitch PLC detection method and a detection device. Background technique [0002] As the fastest-growing clean energy among renewable energy sources, wind energy is valued by countries all over the world for its large-scale and commercial development prospects. At present, the stable operation of PLC in the control of wind turbines has been widely recognized at home and abroad. The pitch control system is an important device for the control and protection of wind turbines above the megawatt level, and it is the main braking system for wind turbines to stop. The pitch system PLC is the control core of the pitch system, and the stability of its functional modules is particularly important. [0003] A complete set of pitch control PLC basically includes control module, CAN master station communication module (controller LAN module, realizes com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05
CPCG05B19/058G05B2219/15078
Inventor 邵巍龙王振威张俊吕峰
Owner GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD