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Method and system for remote online calibration of electric energy meters at gateways

A technology of a gateway electric energy meter and a verification method, which is applied in the field of metering devices, can solve problems such as inability to monitor the error of electric energy meters in real time, and achieve the effects of reducing failure rate, liberating workload and improving work efficiency.

Active Publication Date: 2019-03-08
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Based on this, it is necessary to provide a remote on-line verification method and system for a gateway electric energy meter for the problem that the traditional technology cannot monitor the error of the electric energy meter in real time and easily cause the fault of the electric energy metering device at the gateway

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  • Method and system for remote online calibration of electric energy meters at gateways
  • Method and system for remote online calibration of electric energy meters at gateways
  • Method and system for remote online calibration of electric energy meters at gateways

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Embodiment 1

[0031] In order to solve the problem that the traditional technology cannot monitor the error of the electric energy meter in real time and easily cause the fault of the electric energy metering device at the gate, the present invention provides a remote online verification method for the electric energy meter at the gate. Embodiment 1; figure 2 It is a schematic flow chart of Embodiment 1 of the remote on-line verification method for the gateway electric energy meter of the present invention; figure 2 As shown, the following steps may be included:

[0032] Step S210: Send a data request to the pre-sampling device of the watt-hour meter at the gate to obtain the real-time sampling data fed back by the pre-sampling device according to the data request; the real-time sampling data includes the power energy data, environmental information data and power pulse of the watt-hour meter at the gate data;

[0033] Step S220: Carry out electric energy calculation processing on the el...

Embodiment 2

[0058] In order to solve the problem that the traditional technology cannot monitor the error of the electric energy meter in real time and easily cause the fault of the electric energy metering device at the gate, the present invention also provides Embodiment 2 of a remote online verification method for the electric energy meter at the gate; image 3 It is a schematic flow chart of Embodiment 2 of the remote on-line verification method for the gateway electric energy meter of the present invention; as figure 2 Shown, the present invention may comprise the following steps:

[0059] The first step is to trigger the pre-device to sample. High-precision pre-sampling device (when both the high-precision pre-sampling device and the watt-hour meter at the gate are working continuously, use the pulse output from the watt-hour meter to control the counting of the high-precision pre-sampling device) at regular intervals (preset to be every Once an hour) or trigger the collection of ...

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Abstract

The invention relates to a gateway electric energy meter remote on-line verification method and system. The gateway electric energy meter remote on-line verification method comprises the following steps: a data request is sent to pre-posed sampling device of a gateway electric energy meter being verified, real time sampling data fed back by the pre-posed sampling device according to the data request, electric energy quantity data in a preset sampling time frame to electric energy quantity calculating operation, active and reactive watt-hour value of the gateway electric energy meter can be obtained, relative errors of the gateway electric energy meter can be determined according to the active and reactive watt-hour value and electric energy pulse data, a current running state of the gateway electric energy meter is analyzed based on a preset electric energy meter fault model according to the relative errors and environment information data, and a gateway electric energy meter analysis and verification result can be obtained. The gateway electric energy meter remote on-line verification method and system can be used for on-line electric energy meter verification work, the running state of the electric energy meter can be monitored, whether on-site maintenance is needed can be determined, work efficiency can be greatly improved, and a failure rate can be lowered.

Description

technical field [0001] The invention relates to the technical field of metering devices, in particular to a remote on-line verification method and system for an electric energy meter at a gateway. Background technique [0002] The power industry standard DL / T448-2000 "Technical Management Regulations for Electric Energy Metering Devices" has made specific regulations on the calibration of electric energy meters, voltage transformers TV, current transformers TA, and TV circuit secondary voltage drop. At present, the management method for the electric energy metering device at the gateway is mainly that professionals regularly carry instruments and equipment to the site for periodic inspection. However, this management mode often causes some accurate and normal measuring devices to be "checked without disease", resulting in uneven work cycles of the metering management department, resulting in waste of manpower and material resources; In the absence of accurate and effective ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 林伟斌肖勇钱斌张乐平
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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