Standard meter access-based uninterrupted-power replacement method for replacing electric energy meters

A replacement method and technology for electric energy meters, applied in the direction of measuring electric variables, measuring devices, instruments, etc., can solve problems such as being unable to be measured, and achieve the effect of improving economic benefits

Inactive Publication Date: 2017-04-26
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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Problems solved by technology

[0013] During the existing power outage and meter replacement process, the electric energy meter is in a power-off state, and there is no electric energy measurement cir

Method used

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  • Standard meter access-based uninterrupted-power replacement method for replacing electric energy meters

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Embodiment Construction

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0020] see figure 1 , the present invention provides a method for replacing a power meter connected with a standard meter without power failure, which includes the following steps: Step S1: Apply for a work ticket, check the appearance, equipment and operation of the electric energy metering device before work, and make preparations; Step S2: Conduct electrical inspection on the metering device cabinet to confirm the bottom of the electric energy meter to be disassembled; Step S3: Conduct insulation inspection of the standard meter, set the measurement parameters of the standard meter, and connect the voltage test line and current test line of the standard meter to the electric energy meter. The junction box of the metering device; step S4: open the lower short-circuit piece of the current loop in the junction box phase by phase, that is, conne...

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Abstract

The invention provides a standard meter access-based uninterrupted-power replacement method for replacing electric energy meters. A standard meter is accessed to the circuit of an electric energy meter. During the process from the removal of an old electric energy meter to the installation of a new electric energy meter, an electric energy metering circuit is established through switching the short-circuit plates of an electric energy metering device. In this way, the electric energy metering function is realized during the replacement of electric energy meters by means of the standard meter. According to the technical scheme of the invention, the electric energy metering function is realized during the replacement of electric energy meters. In this way, the economic loss caused by the missed metering phenomenon of the electric energy during the current power-outage replacement process of electric energy meters in the prior art can be avoided. According to the method, a three-phase 0.02-level portable multifunctional standard electric energy meter is adopted, so that the metering accuracy can be ensured. At the same time, based on the design of upper blocks, lower blocks and short-circuit plates in the junction box of the electric energy metering device, the electric energy is completely cut off during the mounting and dismounting process of to-be-dismounted electric energy meters and newly mounted electric energy meters. Therefore, electric energy meters are isolated from the charged electric energy metering loop of the standard electric energy meter. As a result, the secure operation is realized.

Description

technical field [0001] The invention relates to a method for replacing an electric energy meter connected with a standard meter without power failure. Background technique [0002] The electric energy meter is an important part of the electric energy metering device, and is often used in the trade settlement of electric quantity. The long-term use of the electric energy meter will cause problems such as aging of internal parts, affect the accuracy of electric energy measurement, and pose a major safety hazard. Therefore, it is necessary to replace the electric energy meter with a new one to take over the measurement. On the one hand, according to DL / T 448-2000 "Technical Management Regulations for Electric Energy Metering Devices", electric energy metering technical institutions will carry out regular rotation of electric energy meters according to the operation files of electric energy meters, the rotation cycle and workload specified in the regulations, etc. On the other ...

Claims

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Application Information

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IPC IPC(8): G01R11/00G01R22/00
CPCG01R11/00G01R22/00
Inventor 郑州吴志武伍翔陈吴晓王春光黄天富张凯
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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