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Fault early warning logic identification algorithm for variable pitch system

A technology of pitch system and fault early warning, applied in wind turbine monitoring, wind power generation, wind turbine and other directions, can solve the problems of owners unable to achieve maintenance work and increase in power generation loss.

Pending Publication Date: 2021-12-31
新天绿色能源股份有限公司 +1
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Problems solved by technology

Because of this method, the owner cannot implement preventive maintenance work, or prepare corresponding maintenance materials in advance, which increases the loss of power generation due to failure shutdown

Method used

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  • Fault early warning logic identification algorithm for variable pitch system
  • Fault early warning logic identification algorithm for variable pitch system
  • Fault early warning logic identification algorithm for variable pitch system

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0045] like Figure 1-7 As shown, a pitch system fault early warning logic identification algorithm, including the prediction of the internal subsystem fault of the pitch control system and the prediction of the related subsystem driven by the pitch system;

[0046]Among them, the prediction of the internal subsystem failure of the pitch control system specifically includes the following steps:

[0047] Step S11: Pre-judgment of the temperature sensor of the pitch drive motor. Generally, two temperature sensors are installed in the pitch motor for redundant detection and redundant protection for the pitch motor. One of them is output to the pitch controller, and the other is connected to the pitch driver....

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Abstract

The invention provides a fault early warning logic identification algorithm for a variable pitch system. The fault early warning logic identification algorithm comprises the steps of pre-judging faults of subsystems in a variable pitch control system and pre-judging related subsystems driven by the variable pitch system. The step of pre-judging the faults of the subsystems in the variable pitch control system specifically comprises the sub-steps of pre-judging a variable pitch driving motor temperature sensor, pre-judging a variable pitch motor cooling system, judging faults of a variable pitch system encoder and pre-judging the health quality of slip ring communication. The step of pre-judging the related subsystems driven by the variable pitch system specifically comprises the sub-steps of pre-judging a speed reducer and rotation support of a transmission system, and determining whether blades are installed correctly or not. In combination with data of the two parts, which blade goes wrong can be accurately positioned, and operation and maintenance personnel can be informed in advance. The fault early warning logic identification algorithm overcomes the defects in the prior art, and the operation and maintenance personnel can be effectively prompted to carry out special regular inspection and prevention treatment on a specific fan of a wind field through overall operation analysis of a big data platform.

Description

technical field [0001] The invention relates to the technical field of early warning of pitch system faults, in particular to a logic identification algorithm for early warning of pitch variable system faults. Background technique [0002] With the rapid development of wind energy in my country for nearly 20 years, there have been a large number of wind power generation equipment in service. According to incomplete statistics, there are currently more than 110,000 megawatt wind turbines connected to the grid using variable frequency and pitch. In the course of many years of development, all manufacturers and equipment suppliers are paying attention to the technical development of the equipment itself and the iterative research on economics. Taking the pitch control system that controls the power adjustment of the fan and involves the safety of the whole machine as an example, various manufacturers originally focused on developing a pitch system with stronger drive capabilit...

Claims

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Application Information

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IPC IPC(8): F03D17/00F03D7/00
CPCF03D17/00F03D7/00Y02E10/72
Inventor 黄鑫胡占飞保得云李琰韩建英
Owner 新天绿色能源股份有限公司
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