A method for detecting abnormal pressure in the water-cooling system of the wind turbine converter
A technology for wind turbines and water-cooling systems, which is applied to instruments, measuring devices, etc., can solve the problems affecting the normal operation of the converter, the converter system cannot operate normally, and the high-power components are blown up. Strong and efficient effect
Inactive Publication Date: 2019-05-24
CORONA WIND EQUIP BEIJING CO LTD +1
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Problems solved by technology
If the water-cooling system fails, the entire converter system will not be able to operate normally, and even cause high-power components to blow up
[0003] Whether the converter water-cooling system works well or not is directly reflected in the pressure of the converter water-cooling system. The current pressure detection of the converter water-cooling system is through pressure sensors, safety valves and other devices, relying on pressure overrun protection to ensure the safety of the water-cooling system It is usually diagnosed or replaced when a fault occurs, which affects the normal operation of the converter
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0014] The steps of the embodiment of the present invention are as follows:
[0015] 1. Collect the alarm data of the water cooling system of the processing converter
[0016] Export the historical alarm data from the data acquisition and monitoring control system of the wind power generating set, the data files are text files (*.txt) and data tables (*.csv), and extract the water cooling system from the historical alarm data through a dedicated SCADA data processing tool Alarm time, alarm name, converter operating status, water-cooling system pressure data, water-cooling system temperature data, ambient temperature and other information, remove error values or supplement missing values, for example, use the average value of the remaining data to supplement, and finally, extract The data merged and processed into an alarm data file.
[0017...
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The invention provides a pressure anomaly detection method for a water cooling system of a current transformer of a wind driven generator set. The pressure anomaly detection method comprises the following steps: firstly, extracting pressure data and related temperature data of the water cooling system of the current transformer from historical alarming data, and analyzing by adopting a statistical method; combining an analyzed result, effective information dug from the historical alarming data, repairing records and historical fault data to establish an anomaly diagnosis model; and finally, detecting collected real-time data by utilizing the anomaly diagnosis model, obtaining an output predicated value according to the model, judging whether pressure is abnormal or not through comparing a difference value of an actually measured value and the predicated value, and obtaining an anomaly type, so as to realize detection of pressure anomaly of the water cooling system.
Description
technical field [0001] The invention relates to a pressure detection method of a water cooling system of a converter of a wind power generating set. Background technique [0002] The high-power components of the generator set converter will generate a lot of heat during operation, and the water cooling system can conduct heat exchange and cooling in time. If the water-cooling system breaks down, the entire converter system will not be able to operate normally, and even cause high-power components to blow up. [0003] Whether the converter water-cooling system works well or not is directly reflected in the pressure of the converter water-cooling system. The current pressure detection of the converter water-cooling system is through pressure sensors, safety valves and other devices, relying on pressure overrun protection to ensure the safety of the water-cooling system Usually, a fault occurs before diagnosis or replacement is performed, which affects the normal operation of ...
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IPC IPC(8): G01D21/00
CPCG01D21/00
Inventor 王乐乐谷海涛蒋伟朱承轩王洪彬朱宁
Owner CORONA WIND EQUIP BEIJING CO LTD