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System and method for detecting failure of super capacitor module

A supercapacitor module and detection system technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of inconvenient use, inconvenient use, complicated operation procedures, etc., and achieve simple and convenient operation, simple composition, and easy operation simple effect

Active Publication Date: 2015-05-20
CHONGQING HUAYU HEAVY IND ELECTROMECHANICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods have their limitations. The first method is very inconvenient to use, the operation procedure is complicated, and it is carried out on a regular basis. It cannot perform real-time detection and cannot play a good early warning effect; although the second method can monitoring, but the detection equipment is expensive and needs to be installed separately, which is inconvenient to use

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  • System and method for detecting failure of super capacitor module
  • System and method for detecting failure of super capacitor module
  • System and method for detecting failure of super capacitor module

Examples

Experimental program
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Effect test

Embodiment 1

[0079] Embodiment 1: The difference from the embodiment is that U 1 =70 V, the stop detection voltage value is U 2 =73.5V, assuming that the number of supercapacitor cells in the supercapacitor module is n=32, it is known that the standard capacity of a supercapacitor cell is 3000F, the actual cell operating voltage is 2.34375V, and the standard internal resistance of a cell is 0.406mΩ. According to the calculation of formulas (6) to (8), the standard capacity of the supercapacitor module can be C=93.75F, the total voltage of the supercapacitor module when it is working: U=75V, and the standard internal resistance of the supercapacitor module R=13mΩ .

[0080] 1) Perform failure detection on the capacity of the supercapacitor module, the specific steps are as follows:

[0081]a1: The preset detection voltage value is U 1 =70.5V, the stop detection voltage value is U 2 =73.5V;

[0082] a2: Set the charger to charge the supercapacitor module with a constant current I=50A, t...

Embodiment 2

[0097] Embodiment 2: The difference from the embodiment is that U 1 =70 V, the stop detection voltage value is U 2 =73.5V, assuming that the number of supercapacitor cells in the supercapacitor module is n=32, it is known that the standard capacity of a supercapacitor cell is 3000F, the actual cell operating voltage is 2.34375V, and the standard internal resistance of a cell is 0.406mΩ. According to the calculation of formulas (6) to (8), the standard capacity of the supercapacitor module can be C=93.75F, the total voltage of the supercapacitor module when it is working: U=75V, and the standard internal resistance of the supercapacitor module R=13mΩ .

[0098] 1) Perform failure detection on the capacity of the supercapacitor module,

[0099] a1: The preset detection voltage value is U 1 =70V, the stop detection voltage value is U 2 =73V;

[0100] a2: Set the charger to charge the supercapacitor module with a constant current I=50A, turn on the charger, and the detection ...

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Abstract

The invention relates to the field of capacitor failure, in particular to a system and a method for detecting failure of a super capacitor module in a variable-pitch control system of a wind turbine generator set. The system comprises a charger, a charging control relay, a controller, a digital voltmeter, the super capacitor module, a timer and a detecting terminal, wherein the charger, the super capacitor module and a control end of the charging control relay are serially connected to form a charging loop, the digital voltmeter is parallelly connected at two ends of the super capacitor module, a signal output end of the digital voltmeter and a data output end of the detecting terminal are respectively connected with a signal input end of the controller, a signal input end of the charging control relay and a signal input end of the timer are respectively connected with a signal output end of the controller, and a signal output end of the timer is connected with a data acquisition end of the detecting terminal. The system is simple in composition, convenient to operate, low in cost and capable of monitoring the super capacitor module in real time so as to provide early warning information about replacement.

Description

technical field [0001] The invention relates to the field of capacitor failure detection, in particular to a system and a detection method for failure detection of a super capacitor module in a pitch control system of a wind power generating set. Background technique [0002] A supercapacitor is a power supply with special properties between traditional capacitors and batteries. It mainly relies on electric double layers and redox pseudocapacitive charges to store electrical energy, so it is different from traditional chemical power supplies. The advantages of supercapacitors are high power density, short charge and discharge time, long cycle life, and wide operating temperature range. Due to the low rated voltage of supercapacitors, a large number of supercapacitor modules need to be connected in series to form supercapacitor modules in applications. [0003] Based on the above advantages of the super capacitor, the super capacitor module also has the same advantages. The s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R19/00
Inventor 邱明伯胡小华李素红谢敬朗赵胜武杨眉
Owner CHONGQING HUAYU HEAVY IND ELECTROMECHANICAL CO LTD