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Method and system for remote calibration of electric energy metering device

A technology for electric energy metering equipment and remote calibration, which is applied in the direction of measuring electric variables, measuring devices, instruments, etc., and can solve problems such as remote calibration of electric energy metering equipment

Active Publication Date: 2017-07-21
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a method and system for remote calibration of electric energy metering equipment to solve the problem of remote calibration of electric energy metering equipment

Method used

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  • Method and system for remote calibration of electric energy metering device
  • Method and system for remote calibration of electric energy metering device
  • Method and system for remote calibration of electric energy metering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0099] Embodiment 1. The digital metering equipment and the remote calibration device at the inspection interval independently receive the remote calibration command from the remote metering master station, and based on clock synchronization, independently send power information reports such as active energy and reactive energy to the master station. The remote metering master station processes the metering data and gives the calibration result. The method parameter setting and calibration process in Embodiment 1 of the present invention are as follows:

[0100] Register the local calibration device and the test report urcbTest of the measured electric energy metering equipment through the remote metering master station.

[0101] Set the test start time (OpTmh, OpTmm, OpTms), test start SMPCNT code (SmpCnt), test cycle time length (RunTmms), and electric energy accumulation mode (Trstrp) in the remote metering master station.

[0102] The remote metering master station sends ...

Embodiment approach 2

[0125]The remote calibration device uses the MMS communication protocol service described in IEC61850-8-1 to collect the cumulative electric energy of the digital metering equipment in the inspection interval. The digital metering equipment in the inspection interval does not need to communicate directly with the remote master station. The remote calibration device passes After comparing the indication value to obtain the result of the electric energy error, the error result is sent to the metering master station in the form of a report. The mode parameter setting and verification process of this embodiment are as follows:

[0126] The remote metering master station registers the remote calibration device test report urcbTest.

[0127] Set the test start time (OpTmh, OpTmm, OpTms), test start SMPCNT code (SmpCnt), test cycle time length (RunTmms), power accumulation method (Trstrp) and other parameters in the remote metering master station.

[0128] The remote metering master...

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Abstract

The invention discloses a method and system for the remote calibration of an electric energy metering device. According to the method and system, the test report of a remote calibration device and the test report of a tested electric energy metering device are registered; an original logical node LLN0 and a general logic node GGI0 are expanded according to an IEC 61850 modeling principle; a metering verification logic node MSCN is established; a test start time point, a test start code, a test period time length and an electric energy accumulation mode are set; a calibration command is started; the remote calibration device and the electric energy metering device to be tested receive the calibration command and read the data of the parameters of the test start time, the test start code, the test period time length and the electric energy accumulation mode; the remote calibration device and the electric energy metering device to be tested accumulate electric energy in the calibration node at the test start time point, generate their respective electric energy accumulation reports and send the electric energy accumulation reports to a metering main station; and the metering main station carries out error calculation according to the electric energy accumulation reports of the remote calibration device and the electric energy metering device to be tested.

Description

technical field [0001] The invention relates to the field of metering and calibration, and more specifically, to a method and system for remote calibration of electric energy metering equipment. Background technique [0002] The accuracy of electric energy measurement is related to the correct calculation of various electric power technical and economic indicators, as well as the accuracy and fairness of electric power settlement, involving the interests of power generation, transmission, distribution, and users. The power settlement gateway is undertaken by the substation. Traditional substation electric energy metering equipment consists of voltage and current transformers, metering secondary circuits, electric energy meters and metering cabinets, and transmits analog quantities such as current and voltage through cables. [0003] Smart substations and the new generation of smart substations are an important part of the smart grid, and digital metering equipment has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 白静芬于春平林繁涛徐英辉章欣杜新纲杜蜀薇杨静赵莎卢达王猛李华陈松方宋晓卉曾彦超白璋
Owner CHINA ELECTRIC POWER RES INST