Method for evaluating low-voltage electric energy meter operation state

Abstract

The invention discloses a method for evaluating the running state of a low-voltage electric energy meter, and relates to the field of electric power operation and maintenance. At present, an alternating scrapping method of an electric energy meter is not scientific and accurate enough, and waste of a large amount of manpower and material resources is caused. The method provided by the invention comprises the following steps: ; firstly, Weibull distribution is applied to a low-voltage electric energy meter to calculate reliability; the method comprises the following steps: calculating a fault factor weight through an entropy weight method, evaluating four fault operation related data which comprises metering abnormality, a full event, an electric energy meter overload rate and clock batteryundervoltage, considering the effect of a regional influence factor, and finally calculating the total score of low-voltage electric energy meter state evaluation to complete an electric energy meterstate evaluation model. According to the technical scheme, the waste loss caused by continuous operation of the electric energy meter is reduced, the working difficulty of electric power workers is greatly reduced. Meanwhile, the operation efficiency and accuracy of a power grid are improved, and a large amount of manpower and material resources are saved.

Description

technical field [0001] The invention relates to the field of electric power operation and maintenance, in particular to a method for evaluating the running state of a low-voltage electric energy meter. Background technique [0002] The normal and stable operation of low-voltage electric energy meters affects the development of the State Grid Corporation of China and the economic benefits of its operations. The State Grid Corporation of China has started a comprehensive rotation of electric energy meters since 2009. After 2013, the batch failure rate of electric energy meters is used as the basis for periodic rotation. Taking Zhejiang Province as an example, about 4 million electric energy meters and about 400,000 terminal devices are replaced each year. Although some of the electric energy metering equipment has reached the service life, there is no failure and can still be used. The rotation and scrapping method of electric energy meters is not scientific and precise enou...

AI Technical Summary

Problems solved by technology

Therefore, the existing method of artificially checking the smart energy meter for a fixed period to determine whether the energy meter is faulty not only consumes a lot of manpower and material resources, but also has a certain risk of on-site operation, and cannot guarantee effective and timely discovery of the energy meter. abnormal situation

And most of the existing electric energy meter rotation methods are to rotate electric energy meters according to the fixed time period of the electric energy meter verification cycle. In any case, the energy meter needs to be replaced

With the improvement of the technical level of the electric energy meter itself and the improvement of the operation level and detection level of the electric energy meter, this practice will easily cause a waste of manpower and material resources, and is not conducive to energy conservation and environmental protection.

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