CN106569166B - A kind of test method in twin-core electric energy meter legality measurement portion - Google Patents

A kind of test method in twin-core electric energy meter legality measurement portion Download PDF

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Publication number
CN106569166B
CN106569166B CN201610902022.6A CN201610902022A CN106569166B CN 106569166 B CN106569166 B CN 106569166B CN 201610902022 A CN201610902022 A CN 201610902022A CN 106569166 B CN106569166 B CN 106569166B
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China
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electric energy
energy meter
tested
measurement portion
stage body
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CN106569166A (en
Inventor
段晓萌
郜波
姜洪浪
王晓东
左嘉
王爽
杨旭东
陈康杰
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current

Abstract

The present invention relates to technical field, in particular to a kind of test method in twin-core electric energy meter legality measurement portion.This method comprises: examining the instruction of stage body reception PC machine to tested electric energy meter output signal;Stage body is examined to obtain the continuous data for being tested the legality measurement portion of electric energy meter under several test condition, the error information for examining stage body to calculate according to continuous data in real time;PC machine stored error data and error curve is compared according to error information fit error curve PC machine with standard verification, obtains comparison result.The error information for examining stage body to be calculated according to continuous data due to the present invention;PC machine stored error data and error curve is compared according to error information fit error curve PC machine with standard verification, obtains comparison result.Tested electric energy meter can be measured and be tested the accuracy that electric energy meter legality measurement portion works independently under the interference of different test conditions.

Description

A kind of test method in twin-core electric energy meter legality measurement portion
Technical field
The present invention relates to technical field, in particular to a kind of test method in twin-core electric energy meter legality measurement portion.
Background technique
Currently, China's electric energy meter designs for integral type, i.e., metering section and non-metering part do not do autonomous working and require.This Kind electric energy meter requires software and hardware to compare solidification, once there is hardware or software failure, can only take the side for replacing whole table Everything goes well with your work ensureing electric-power metering carries out for formula.And for the security consideration for preventing from distorting electric energy list procedure, do not allow electric energy meter On-line software updating.And in the following electricity market full of competition, different sale of electricity main bodys are examined for pursuit benefit's Consider, more rate electricity price day Time segments division strategies of formulation have more specific aim, diversity and real-time.But this to the prior art one The electric energy meter of body formula design proposes stern challenge.How to ensure that metering accuracy and reliability while be able to achieve meter again The update or optimization for measuring charging mode, are current urgent problems.It is right simultaneously with the gradually infiltration of user experience idea The functional requirement of electric energy meter is also more and more, and if at present want extend upgrade function, can only take install new table mode come reality It is existing, the waste of resource is not only caused, but also also add manpower and material resources cost.
However IR46 standard requirements electric energy meter electronic equipment and component separate measurement function and other function are mutually indepedent, pipe Reason partial software online upgrading does not influence the Stability and veracity of metering section.Twin-core electric energy meter based on IR46 standard will Developing direction as Science in Future in China electric energy meter.Twin-core electric energy meter requires legality measurement part and administrative section to separate, that is, measures Core and management core, and legality measurement part can work independently.In this way, will not influence metering core when electric energy meter online upgrading It works normally, without installing new table.
In order to guarantee the quality of twin-core electric energy meter, electric energy meter needs the independence to its legality measurement part before factory It is tested, therefore, is badly in need of a kind of test method that twin-core electric energy meter legality measurement part works independently occur.
Summary of the invention
In order to overcome the above problem, the present invention provides a kind of test method in twin-core electric energy meter legality measurement portion, this method It can test whether twin-core electric energy meter legality measurement portion can work independently.
In order to achieve the above-mentioned advantages, the test method that the present invention provides a kind of twin-core electric energy meter legality measurement portion includes: check-out console Body obtains the continuous data that the legality measurement portion of electric energy meter is tested under several test condition in real time, examines stage body according to stoichiometric number According to the error information of calculating, includes: PC machine stored error data and error curve is obtained according to error information;PC machine is by error Curve is compared with standard verification, obtains comparison result.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the test condition packet It includes: being tested electric energy meter multichannel while communicating, tested electric energy meter software upgrading, parameter setting carried out to tested electric energy meter, is tested Electric energy meter zeros data;To one or more of management department's frequent recovery of tested electric energy meter, external disturbance.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the external disturbance packet Include: simulation working power failure, peripheral circuit pin is shorted or open-circuit fault, tested electric energy meter normal course of operation in pair quilt It surveys electric energy meter and carries out one or more of module replacing.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the inspection stage body The continuous data for being tested the legality measurement portion of electric energy meter under several test condition is obtained in real time, examines stage body according to continuous data The error information of calculating includes: to obtain output data a to the electric quantity metering for examining stage body to be sent to tested electric energy meter;Examine stage body Receive the electricity data b of tested electric energy meter;Stage body is examined to calculate the error information that the difference of a and b is used as.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the inspection stage body The continuous data for being tested the legality measurement portion of electric energy meter under several test condition is obtained in real time, examines stage body according to continuous data The error information of calculating includes: to obtain output data a to the electric quantity metering for examining stage body to be sent to tested electric energy meter;Examine stage body Receive the electricity data b of tested electric energy meter;Stage body is examined to calculate the error information that the ratio of a and b is used as.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the legality measurement portion Including metering chip, metering MCU, RS485 interface, battery, clock chip and memory.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the tested electric energy meter It is electrically connected by RS485 line with the PC machine.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the metering chip is logical SPI line is crossed to be electrically connected with the metering MCU.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, stage body is being examined to receive The instruction of PC machine is tested electric energy meter zeros data to the tested electric energy meter output signal foregoing description.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the PC machine and institute It states control test stage body while multiple tested electric energy meters is tested.
Since present invention inspection stage body obtains the meter in the legality measurement portion of tested electric energy meter under several test condition in real time Data are measured, according to the error information for calculating legal system measurement unit;PC machine stored error data and according to error information obtain error Curve;Error curve is compared by PC machine with standard verification, obtains comparison result.Tested electric energy meter can be measured in different surveys The accuracy that tested electric energy meter legality measurement portion works independently under the interference of strip part.
Detailed description of the invention
Fig. 1 is the schematic diagram of tested electric energy meter of the invention.
Fig. 2 is the schematic diagram of synchronous testing device of the invention.
Fig. 3 is the flow chart of the test method in first embodiment of the invention twin-core electric energy meter legality measurement portion.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with Attached drawing and preferred embodiment, to specific embodiment, structure, feature and its effect is proposed according to the present invention, detailed description is as follows.
The tested electric energy meter for please referring to the test method in the twin-core electric energy meter legality measurement portion of the invention Fig. 1 includes legal system meter Amount portion and management department.
Legality measurement portion includes metering chip, metering MCU, RS485 interface, battery, clock chip and memory.Metering core Piece is electrically connected by SPI line with metering MCU.Tested electric energy meter is electrically connected by RS485 interface and battery with metering MCU.Clock Chip and memory are electrically connected with metering MCU.Management department includes management MCU, and metering MCU passes through standard interface and management MCU electricity Connection.Tested electric energy meter is electrically connected by RS485 line with the PC machine.
PC machine obtains legal system electricity data by legal system portion RS485 serial ports, by managing core RS485 serial ports, infrared, carrier wave Etc. modes obtain management department's electricity data.
Fig. 3 is the flow chart of the test method in first embodiment of the invention twin-core electric energy meter legality measurement portion.Refer to figure 3, the test method in the twin-core electric energy meter legality measurement portion of the present embodiment includes:
S1, examine the instruction of stage body reception PC machine to tested electric energy meter output signal;
S2, stage body is examined to obtain the continuous data for being tested the legality measurement portion of electric energy meter under several test condition in real time, The error information for examining stage body to be calculated according to continuous data;
S3, PC machine stored error data and according to error information fit error curve;
Error curve is compared by S4, PC machine with standard verification, obtains comparison result.
Test condition includes: tested electric energy meter multichannel while communicating, tested electric energy meter software upgrades, to tested electric energy meter Carry out parameter setting, tested electric energy meter zeros data;To one of management department's frequent recovery of tested electric energy meter, external disturbance Or it is several.External disturbance includes: simulation working power failure, peripheral circuit pin short circuit or open-circuit fault, is being tested electric energy meter just Tested electric energy meter in normal operational process pair carries out one or more of module replacing.
It examines stage body to obtain the continuous data for being tested electric energy meter under several test condition in real time, calculates tested electric energy meter Error information includes: to obtain output data a to the electric quantity metering for examining stage body to be sent to tested electric energy meter;Stage body is examined to receive tested The electricity data b of electric energy meter;Stage body is examined to calculate the error information that the difference of a and b is used as.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, stage body is examined to obtain in real time The continuous data that electric energy meter is tested under several test condition is taken, the error information for calculating tested electric energy meter includes: to check-out console The electric quantity metering that body is sent to tested electric energy meter obtains output data a;Stage body is examined to receive the electricity data b of tested electric energy meter;Inspection It tests stage body and calculates the error information that the ratio of a and b is used as.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, stage body is being examined to receive The instruction of PC machine is tested electric energy meter zeros data to the tested electric energy meter output signal foregoing description.
In one embodiment of the test method in twin-core electric energy meter legality measurement portion of the invention, the PC machine and institute It states control test stage body while multiple tested electric energy meters is tested.Every ammeter is all that independent test is independent of each other, can be with How much arrange multiple ammeters simultaneously according to stage body epitope while testing.
To sum up, the present invention at least has the advantage that
Since the inspection stage body in the test method in twin-core electric energy meter legality measurement portion of the invention calculates tested electricity in real time The error information of energy table;The error information and record for the inspection stage body that PC machine is read in real time, are fitted to error curve;PC machine and inspection Test stage body to tested electric energy meter export different test conditions;In this way, tested electric energy meter can be measured in different test conditions Interference under tested electric energy meter legality measurement portion work independently accuracy.In this way, can guarantee that the electric energy meter of factory is to close Lattice product.
More than, it is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, although this Invention has been disclosed in a preferred embodiment above, and however, it is not intended to limit the invention, any person skilled in the art, It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent The equivalent embodiment of variation, but without departing from the technical solutions of the present invention, according to the technical essence of the invention to the above reality Any simple modification, equivalent variations and modification made by example are applied, all of which are still within the scope of the technical scheme of the invention.

Claims (7)

1. a kind of test method in twin-core electric energy meter legality measurement portion characterized by comprising
Examine the instruction of stage body reception PC machine to tested electric energy meter output signal;
It examines stage body to obtain the continuous data for being tested the legality measurement portion of electric energy meter under several test condition in real time, examines stage body Error information is calculated according to continuous data;
PC machine stored error data and according to error information fit error curve;
Error curve is compared by PC machine with standard verification, obtains comparison result;
The test condition includes one or more of following conditions: being tested electric energy meter multichannel while communicating, tested electric energy Table software upgrading carries out parameter setting, tested electric energy meter zeros data to tested electric energy meter;To management department's frequency of tested electric energy meter Complicated position, external disturbance;
The external disturbance includes following one or more: simulation working power failure, peripheral circuit pin are shorted or open circuit Module replacing is carried out to tested electric energy meter in failure, tested electric energy meter normal course of operation.
2. the test method in twin-core electric energy meter legality measurement portion according to claim 1 is it is characterized in that, the inspection Stage body obtains the continuous data that the legality measurement portion of electric energy meter is tested under several test condition in real time, examines stage body according to metering Data calculate error information, include:
Output data a is obtained to the electric quantity metering for examining stage body to be sent to tested electric energy meter;
Stage body is examined to receive the electricity data b of tested electric energy meter;
Stage body is examined to calculate the difference of a and b as error information.
3. the test method in twin-core electric energy meter legality measurement portion according to claim 1 to 2 is it is characterized in that, described Legality measurement portion includes metering chip, metering MCU, RS485 interface, battery, clock chip and memory.
4. the test method in twin-core electric energy meter legality measurement portion according to claim 3 is it is characterized in that, the tested electricity Energy table is electrically connected by RS485 line with the PC machine.
5. the test method in twin-core electric energy meter legality measurement portion according to claim 3 is it is characterized in that, the metering core Piece is electrically connected by SPI line with the metering MCU.
6. the test method in twin-core electric energy meter legality measurement portion according to claim 1 is it is characterized in that, examining stage body The instruction for receiving PC machine is tested electric energy meter zeros data to the tested electric energy meter output signal foregoing description.
7. the test method in twin-core electric energy meter legality measurement portion according to claim 1 is it is characterized in that, the PC machine Multiple tested electric energy meters are tested simultaneously with the inspection stage body.
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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107505588A (en) * 2017-08-08 2017-12-22 国网重庆市电力公司电力科学研究院 A kind of electric energy meter combines error testing method and system
CN108445436B (en) * 2018-03-01 2020-04-10 宁波迦南智能电气股份有限公司 Electric energy meter with double cores for mutual detection of running states
CN112098924B (en) * 2020-11-04 2021-02-23 南方电网数字电网研究院有限公司 Interactive function testing method and device based on double-core intelligent electric meter
CN112858993A (en) * 2021-02-20 2021-05-28 南方电网数字电网研究院有限公司 Double-core electric energy meter test system

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CN103698735A (en) * 2013-10-30 2014-04-02 国家电网公司 Electric energy meter harmonic test device and method thereof
CN104020437A (en) * 2014-06-21 2014-09-03 宁波三星电气股份有限公司 Electric energy meter correction method
CN105116369A (en) * 2015-09-09 2015-12-02 国网冀北电力有限公司电力科学研究院 Radio frequency radiation disturbance rejection degree test apparatus and system

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Publication number Priority date Publication date Assignee Title
CN101900801A (en) * 2010-07-15 2010-12-01 田卫华 Intelligent electric energy meter field test device and test method thereof
CN103698735A (en) * 2013-10-30 2014-04-02 国家电网公司 Electric energy meter harmonic test device and method thereof
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