Networked online inspection system for electric energy metering devices

Abstract

The invention discloses a networked online inspection system for electric energy metering devices. The networked online inspection system comprises data acquisition devices, a data concentration device and a background server, wherein the data acquisition devices and the data concentration device are deployed in an electric meter cabinet of a substation, and the background server is deployed at a metering center; the data acquisition devices are connected with electric energy meters correspondingly, acquire pulse signals of the electric energy meters and voltage U and current I which are connected to the front of the electric energy meters, and send sample value packets to the data concentration device; and the background server is deployed at the metering center and used for receiving time mark carrying information which is sent by the data concentration device, performing electric energy calculation on original voltage and current and comparing with an electric energy value corresponding to the pulse signals so as to realize networked online inspection for the electric energy metering devices. The system disclosed by the invention truly realizes network online inspection for the electric energy metering devices, the front end only requires to deploy the highly-integrated high-precision acquisition devices and the data concentration device, and a standard meter is not required to be installed; and the rear end only requires to deploy the server and does not need a digital or simulated electric energy meter calibration instrument, thereby realizing high-precision acquisition at the front end and networked inspection at the rear end.

Description

technical field [0001] The invention belongs to the field of electric energy meter inspection, in particular to a networked on-line inspection system for electric energy metering devices that completes the on-site inspection of electric energy meters in a metering center. Background technique [0002] Electric energy metering device is the only basis for power generation, supply and consumption enterprises to conduct electric energy trade. The correctness of electric energy metering is directly related to the interests of users and the economic benefits of electric power enterprises. In accordance with the requirements of the industry standard DL / T448--2000 "Technical Management Regulations for Electric Energy Metering Devices", on-site inspections of Class I electric energy meters for grid-connected power generation, cross-regional power transmission, cross-provincial power transmission, and large-scale users shall be conducted at least once every three months. [0003] Wit...

AI Technical Summary

Problems solved by technology

[0004] (1) The amount of data is large, the information interaction is poor, the data is easy to make mistakes in the process of checking, and the workload is large

[0005] (2) The manual periodic inspection has a large workload and high work intensity, the manual management process is cumbersome and the management efficiency is low

[0006] (3) The manual inspection cycle is long, and it will be difficult to find out if the electric energy meter fails within the cycle range, which will have a great impact on billing management

[0007] (4) When the staff conducts a series of inspections on the electric energy meter, it is necessary to connect the voltage and current of the meter under inspection with the standard meter, and repeatedly rotate the terminals on the metering cabinet. As the number of times increases, Terminals will become loose and slippery. If they cannot be replaced in time, there will be great potential safety hazards.

[0008] (5) The on-site inspection of the electric energy meter has corresponding requirements for the load of the line. If the light load or the power factor does not meet the specified requirements, the inspection of the meter cannot be carried out

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