Online monitoring system for storage battery of fan variable pitch propeller

A monitoring system and storage battery technology, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of high labor intensity, high maintenance cost, and low operating efficiency of workers, and achieve reliable and effective detection results and light labor intensity of workers , the effect of high degree of intelligence

Inactive Publication Date: 2012-06-27
DONGFANG TURBINE CO LTD +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Although the detection results of this method are reliable and effective, it cannot realize online detection and obtain real-time data, and has defects such as poor timeliness, high labor intensity of workers, low operating efficiency, and high maintenance costs.
With the rapid development of my country's wind power industry, the traditional battery detection method is no longer applicable, and it is urgent to develop a timely and efficient battery online detection technology

Method used

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  • Online monitoring system for storage battery of fan variable pitch propeller
  • Online monitoring system for storage battery of fan variable pitch propeller
  • Online monitoring system for storage battery of fan variable pitch propeller

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Embodiment Construction

[0032] see image 3 , the present invention is provided with a transient discharge circuit 7 to storage battery, and this transient discharge circuit 7 is made up of current measurement device 4, voltage measurement device 3, discharge resistance 21 and time relay SJ, controls the discharge of discharge resistance 21 by time relay SJ time. By measuring the discharge voltage and discharge current of the circuit, the internal resistance of the battery can be obtained, and then judge whether the power of the battery is sufficient. The formula for calculating the internal resistance of the battery is:

[0033] R=△V / I

[0034] In the formula, R is the internal resistance of the battery; △V is the instantaneous voltage difference after the voltage is stable; I is the discharge current.

[0035] see figure 1 , the wind power pitch storage battery online monitoring system includes:

[0036] - A transient discharge circuit 7 for detecting the internal resistance of the storage batt...

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Abstract

The invention discloses an online monitoring system for a storage battery of a fan variable pitch propeller, which comprises a transient discharge circuit, a voltage measuring device, a current measuring device, a temperature measuring device and a controller. The controller comprises a data acquisition module, an automatic switching control module for the transient discharge circuit, a storage battery grouping loop detection control module, a storage battery malfunction coding module, an undervoltage and under-capacitance halt setting value correcting module, a signal processing module, a storage and a halt actuator. The whole working process of the storage battery is detected on line by the online monitoring system, real-time data are acquired, the online monitoring system can judge whether the electric quantity of the storage battery is sufficient or not more really and accurately, detecting results are reliable and effective, and detecting cost is low.

Description

technical field [0001] The invention relates to storage battery detection, in particular to an on-line monitoring system for wind turbine pitch storage batteries. Background technique [0002] As a redundant power supply for emergency feathering, the pitch battery of the wind turbine plays a vital role in the pitch system of the wind turbine. However, due to the poor stability of the battery itself, aging and other phenomena are prone to occur during the long-term service process, resulting in a decrease in the charging capacity of the battery, a corresponding extension of the charging time, and insufficient discharge capacity, causing serious damage to the safe operation of the wind turbine. threaten. At present, there is no online monitoring of the storage battery of the wind power generating set, and it is impossible to know in real time whether the storage battery is sufficient. [0003] In order to ensure the normal and stable operation of the battery, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 王德贵王庆峰李飞苏彬王兵
Owner DONGFANG TURBINE CO LTD
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