Capacitance detection period determination method and device, electronic equipment and wind driven generator
A technology for wind turbine and capacitance detection, which is applied in capacitance measurement, measuring device, and measurement of resistance/reactance/impedance, etc., which can solve the problem of ineffective monitoring of supercapacitor usage, reducing the service life of supercapacitors, wind turbine generating capacity, etc. problem, achieve the effect of optimizing the test cycle and increasing the service life
Active Publication Date: 2020-04-10
SANY ELECTRIC CO LTD
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However, if the periodic detection period is too long, the usage of the supercapacitor cannot be effectively monitored; if the periodical detection period is too short, excessively frequent capacitance detection will reduce the service life of the supercapacitor and the power generation of the wind turbine.
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[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0027] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...
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The invention provides a capacitance detection period determination method, a capacitance detection period determination device, electronic equipment and a wind driven generator, which relate to the field of wind driven generators. The capacitance detection period determination method comprises the steps of: judging whether a measured capacitance value of a super capacitor of the wind driven generator is greater than or equal to a rated capacitance value of the super capacitor; when the measured capacitance value is greater than or equal to the rated capacitance value, determining a capacitance detection period as the maximum period, wherein the capacitance detection period is a time difference between two times of measurement capacitance value acquisition; and when the measured capacitance value is smaller than the rated capacitance value, the capacitance detection period is determined as a fitting period according to a period adjustment parameter, wherein the period adjustment parameter is a ratio of the measured capacitance value to the rated capacitance value, and the fitting period is smaller than the maximum period. The test time of the next capacitance detection is determined according to the parameter of each test, the capacitance test period is optimized, and the service life of the capacitor is prolonged.
Description
technical field [0001] The present application relates to the field of wind power generators, in particular, to a method, device, electronic equipment and wind power generators for determining a period of capacitance detection. Background technique [0002] In recent years, the installed capacity of wind turbines in China has continued to increase, and the requirements for the performance and operational reliability of wind turbines have also gradually increased. For the pitch system, when the grid voltage is normal, the power to drive the pitch motor is rectified by the grid. When the grid voltage drops or the power is cut off, a backup power supply is required to provide DC voltage to the drive of the pitch system to achieve blade safety. Feather to achieve the purpose of safe operation. [0003] There are two main backup power sources for the pitch system: supercapacitors and batteries. Among them, supercapacitors have the advantages of long service life, high power den...
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IPC IPC(8): G01R27/26
CPCG01R27/2605
Inventor 王凯董召然
Owner SANY ELECTRIC CO LTD