Online monitoring method for communication battery health degree

Abstract

The invention discloses an online monitoring method for a communication battery health degree. The current, the terminal voltage and the internal resistance of a storage battery under various different working states are monitored in real time, an improved ampere-hour method is used for calculating the capacity of the storage battery, and meanwhile, the influence of the discharge rate, the chargeefficiency and the temperature of the storage battery on the capacity is corrected, the state of health of the storage battery under a charge and discharge state can be quantified, and a basis is provided for the qualitative analysis of the state of health of the storage battery under a floating charge state so as to realize the all-around judgment of the state of health of the storage battery under the conditions of charge, discharge and floating charge. The method has the advantages of being high in applicability and accuracy, simple in implementation and the like, so that the method can beused for discovering storage battery individuals which may have hidden dangers in advance, the reliability and the guarantee level of the storage battery can be effectively improved, and the method ishigh in practicality.

Description

technical field [0001] The invention relates to the technical field of safe operation of power grid equipment, in particular to an online monitoring method for the health degree of a communication storage battery. Background technique [0002] In recent years, in the actual use of maintenance-free lead-acid batteries, major communication accidents caused by battery failures have occurred from time to time, causing great safety hazards to the safe and stable operation of the power grid. The traditional daily maintenance of batteries is usually carried out manually on a regular basis. Since the communication batteries of the power grid are usually distributed in the communication rooms of substations of different levels, it is difficult to ensure that special personnel are supervised and tested, and there is also a lack of corresponding data analysis methods. Targeted battery health status assessment and risk warning. [0003] The actual capacity of the battery is the most di...

AI Technical Summary

Problems solved by technology

However, in the on-site environment of power communication batteries, the actual capacity estimation of the batteries will be affected by many factors such as the brand of the manufacturer, the magnitude of the charge and discharge current, and temperature changes, making the calculation of the actual capacity change of the batteries a complicated process. The capacity estimation methods all have their own defects, resulting in large errors in the calculation of the actual capacity of the battery

And the current calculation of the actual capacity of the battery is mostly obtained through the discharge test in the offline state, and it is impossible to accurately predict and estimate the battery capacity under the online condition.

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