CN203572959U - Electronic electric energy meter dynamic characteristic testing device - Google Patents

Electronic electric energy meter dynamic characteristic testing device Download PDF

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Publication number
CN203572959U
CN203572959U CN201320803089.6U CN201320803089U CN203572959U CN 203572959 U CN203572959 U CN 203572959U CN 201320803089 U CN201320803089 U CN 201320803089U CN 203572959 U CN203572959 U CN 203572959U
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CN
China
Prior art keywords
electric energy
energy meter
circuit
pulse
dynamic
Prior art date
Application number
CN201320803089.6U
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Chinese (zh)
Inventor
袁瑞铭
王学伟
周丽霞
王琳
杨晓波
丁恒春
易忠林
钟侃
施冉
温丽丽
刘潇
Original Assignee
国家电网公司
华北电力科学研究院有限责任公司
北京化工大学
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Priority to CN201320803089.6U priority Critical patent/CN203572959U/en
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Publication of CN203572959U publication Critical patent/CN203572959U/en

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Abstract

The utility model provides an electric energy meter dynamic characteristic testing device. The testing device comprises a one-chip microcomputer, a programmable logic control device, a voltage and current transformer, a signal sampling circuit, a silicon controlled rectifier control circuit, a pulse shaping circuit, a pulse counting circuit and a liquid crystal display circuit. After a three-phase stable-state voltage current signal passes through the voltage and current transformer and the signal sampling circuit, a control signal the frequency of which is the same as that of the three-phase stable-state voltage is generated, the programmable logic control device transmits the control signal to the silicon controlled rectifier control circuit, the silicon controlled rectifier control circuit generates three-phase dynamic power and outputs the three-phase dynamic power to an external electric energy meter to be detected, the external electric energy meter to be detected works out the electric energy value in dependence on measurement and outputs an electric energy pulse to the one-chip microcomputer, and the one-chip microcomputer calculates dynamic errors of the electric energy meter to be detected. By employing the electronic electric energy meter dynamic characteristic testing device, the measurement of metrological characteristics of the electric energy meter under a dynamic load is achieved, and tests of dynamic error characteristic starting characteristics of the electronic electric energy meter in various dynamic load modes are disclosed.

Description

Electronic electric energy meter dynamic characteristic test device

Technical field

The utility model relates to electric energy meter field tests, relates in particular to a kind of dynamic characteristic test device of electronic electric energy meter.

Background technology

In recent years, along with dynamic load in modern power systems constantly increases, dynamic load power consumer causes that the problem that electric energy metrical value reduces becomes more and more outstanding and important, and the electric energy meter that scene is used, in the urgent need to testing the dynamic perfromance of its electric energy metrical.Therefore, the test of the dynamic perfromance of electric energy meter becomes new problem urgently to be resolved hurrily.

In order to determine electric energy meter dynamic error characteristic in actual applications, effective method is that electric energy meter is tested under actual electric network operating mode.But the electric current of dynamic load and power factor acute variation under actual electric network operating mode, make the test and excitation signal of electric energy meter not there is controllability, from metrological angle, the measurement of electric energy meter dynamic error does not have repeatability, therefore can not repeat to contrast the dynamic error characteristic of electric energy meter.

Utility model content

For the problems referred to above, the utility model embodiment provides a kind of electronic electric energy meter dynamic characteristic test device, to solve existing electric energy meter dynamic characteristic test problem.

In order to achieve the above object, the utility model embodiment provides a kind of electronic electric energy meter dynamic characteristic test device, comprises single-chip microcomputer, programmable logic controller (PLC) part, voltage current transformer, signal sample circuit, silicon controlled control circuit, pulse shaping circuit, pulse-scaling circuit and liquid crystal display circuit; Wherein, described voltage current transformer connects described signal sample circuit, described signal sample circuit connects described programmable logic controller (PLC) part, described programmable logic controller (PLC) part connects described silicon controlled control circuit, described pulse shaping circuit connects described pulse-scaling circuit, and described programmable logic controller (PLC) part, pulse-scaling circuit and liquid crystal display circuit all connect described single-chip microcomputer; The three-phase voltage current signal of outside input, after described voltage current transformer and signal sample circuit, generates the control signal with described three-phase steady state voltage same frequency; Described programmable logic controller (PLC) part receives described control signal, controls described silicon controlled control circuit; Described silicon controlled control circuit produces dynamic power and exports to outside tested electric energy meter; The tested electric energy meter in described outside measures energy value according to described dynamic power, and exports electrical energy pulse, after described pulse shaping circuit carries out shaping filter, is transferred to described pulse-scaling circuit; Described pulse-scaling circuit sends described single-chip microcomputer to after the electrical energy pulse of the tested electric energy meter output in described outside is counted; Described single-chip microcomputer gathers the output pulse of standard electric energy meter, calculates the dynamic error of described tested electric energy meter; Described liquid crystal display circuit is used for showing described dynamic error.

Further, in one embodiment, described signal sample circuit is for being transformed to the digital signal for control procedure by simulating signal.

Further, in one embodiment, described programmable logic controller (PLC) part is CPLD XC9536.

Further, in one embodiment, described single-chip microcomputer is SST89E516RD2 chip.

Further, in one embodiment, described proving installation also comprises power module, is connected in described programmable logic controller (PLC) part and single-chip microcomputer, for power supply is provided.

Further, in one embodiment, described proving installation also comprises watchdog circuit, is connected in described single-chip microcomputer, for the reset of described single-chip microcomputer.

The electronic electric energy meter dynamic characteristic test device of the utility model embodiment, sets up and uses CPLD control to produce dynamic load test and excitation signal, realizes the measurement of electric energy meter meter characteristic under dynamic load; Use the device of development and Design, build electric energy meter and carry out dynamic characteristic test, disclosed the test of the dynamic error characteristic starting characteristic of electronic electric energy meter under various dynamic load patterns.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the structural representation of the electronic electric energy meter dynamic characteristic test device of the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.

Fig. 1 is the structural representation of the electronic electric energy meter dynamic characteristic test device of the utility model embodiment.As shown in the figure, described proving installation comprises single-chip microcomputer 1, programmable logic controller (PLC) part 2, voltage current transformer 3, signal sample circuit 4, silicon controlled control circuit 5, pulse shaping circuit 6, pulse-scaling circuit 7 and liquid crystal display circuit 8; Wherein,

Described voltage current transformer 3 connects described signal sample circuit 4, described signal sample circuit 4 connects described programmable logic controller (PLC) part 2, described programmable logic controller (PLC) part 2 connects described silicon controlled control circuit 5, described pulse shaping circuit 6 connects described pulse-scaling circuit 7, and described programmable logic controller (PLC) part 2, pulse-scaling circuit 7 and liquid crystal display circuit 8 all connect described single-chip microcomputer 1.

The three-phase steady state voltage current signal of outside input, after described voltage current transformer 3 and signal sample circuit 4, generates the control signal with described three-phase steady state voltage same frequency; Described programmable logic controller (PLC) part 2 receives described control signal, controls described silicon controlled control circuit 5; Described silicon controlled control circuit 5 produces dynamic power and exports to outside tested electric energy meter; Described in the tested electric energy meter in described outside, dynamic power measures energy value, and exports electrical energy pulse, through described pulse shaping circuit 6, carries out after shaping filter, is transferred to described pulse-scaling circuit 7; The electrical energy pulse of the tested electric energy meter output in 7 pairs of described outsides of described pulse-scaling circuit sends described single-chip microcomputer 1 to after counting; Described single-chip microcomputer 1 gathers the output pulse of standard electric energy meter, calculates the dynamic error of described tested electric energy meter; Described liquid crystal display circuit 8 is for showing described dynamic error.

In the present embodiment, described signal sample circuit 4 is for being transformed to simulating signal the digital signal for control procedure.

In the present embodiment, described programmable logic controller (PLC) part 2 is CPLD XC9536.

In the present embodiment, described single-chip microcomputer 1 is SST89E516RD2 chip.

In the present embodiment, described proving installation also comprises watchdog circuit 9, is connected in described single-chip microcomputer 1, for the reset of described single-chip microcomputer 1.

In the present embodiment, described proving installation also comprises power module 10, is connected in described programmable logic controller (PLC) part 2 and single-chip microcomputer 1, for power supply is provided.

When utilizing above-mentioned electric energy meter dynamic characteristic test device to carry out error testing, first to set up the mathematical model of dynamic load electric energy sequence excitation, carry out on this basis the measurement of dynamic error.In the utility model, employing OOK(On-Off-Key) break-make control mode is converted to dynamic load current signal by steady-state current signal, and, adopt electric energy sequence energisation mode to calculate the dynamic load electric energy of electric energy meter, above-mentioned computing method belong to well-known to those skilled in the art, so repeat no more in the utility model.

The electronic electric energy meter dynamic characteristic test device of the utility model embodiment, sets up and uses CPLD control to produce dynamic load test and excitation signal, realizes the dynamic characteristic measuring of electric energy meter; Use the device of development and Design, build experiment porch, electric energy meter is carried out to dynamic error test, disclosed the performance of the dynamic error of electronic electric energy meter under various dynamic load patterns.

In the utility model, applied specific embodiment principle of the present utility model and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.

Claims (6)

1. an electronic electric energy meter dynamic characteristic test device, it is characterized in that, described proving installation comprises single-chip microcomputer, programmable logic controller (PLC) part, voltage current transformer, signal sample circuit, silicon controlled control circuit, pulse shaping circuit, pulse-scaling circuit and liquid crystal display circuit; Wherein,
Described voltage current transformer connects described signal sample circuit, described signal sample circuit connects described programmable logic controller (PLC) part, described programmable logic controller (PLC) part connects described silicon controlled control circuit, described pulse shaping circuit connects described pulse-scaling circuit, and described programmable logic controller (PLC) part, pulse-scaling circuit and liquid crystal display circuit all connect described single-chip microcomputer;
The three-phase voltage current signal of outside input, after described voltage current transformer and signal sample circuit, generates the control signal with described three-phase steady state voltage same frequency;
Described programmable logic controller (PLC) part receives described control signal, controls described silicon controlled control circuit;
Described silicon controlled control circuit produces dynamic power and exports to outside tested electric energy meter;
The tested electric energy meter in described outside measures energy value according to described dynamic power, and exports electrical energy pulse, after described pulse shaping circuit carries out shaping filter, is transferred to described pulse-scaling circuit;
Described pulse-scaling circuit sends described single-chip microcomputer to after the electrical energy pulse of the tested electric energy meter output in described outside is counted;
Described single-chip microcomputer gathers the output pulse of standard electric energy meter, calculates the dynamic error of described tested electric energy meter;
Described liquid crystal display circuit is used for showing described dynamic error.
2. electronic electric energy meter dynamic characteristic test device according to claim 1, is characterized in that, described signal sample circuit is for being transformed to the digital signal for control procedure by simulating signal.
3. electronic electric energy meter dynamic characteristic test device according to claim 1, is characterized in that, described programmable logic controller (PLC) part is CPLD XC9536.
4. electronic electric energy meter dynamic characteristic test device according to claim 1, is characterized in that, described single-chip microcomputer is SST89E516RD2 chip.
5. electronic electric energy meter dynamic characteristic test device according to claim 1, is characterized in that, described proving installation also comprises power module, is connected in described programmable logic controller (PLC) part and single-chip microcomputer, for power supply is provided.
6. electronic electric energy meter dynamic characteristic test device according to claim 1, is characterized in that, described proving installation also comprises watchdog circuit, is connected in described single-chip microcomputer, for the reset of described single-chip microcomputer.
CN201320803089.6U 2013-12-09 2013-12-09 Electronic electric energy meter dynamic characteristic testing device CN203572959U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103630871A (en) * 2013-12-09 2014-03-12 国家电网公司 Testing device for dynamic characteristics of electronic energy meter
CN104133187A (en) * 2014-05-26 2014-11-05 国家电网公司 System for detecting intelligent electric energy meter and method thereof
CN105911509A (en) * 2016-05-27 2016-08-31 国网天津市电力公司 Rapid batch watt-hour meter starting test device pulse alignment control module
CN106054109A (en) * 2016-05-27 2016-10-26 国网天津市电力公司 Fast and batched electric energy meter start-up test method
CN106054107A (en) * 2016-05-27 2016-10-26 国网天津市电力公司 Fast batch electric energy meter false actuation test device pulse alignment control module
CN106093828A (en) * 2016-05-27 2016-11-09 国网天津市电力公司 Rapid batch Basic Error of Energy Meter test calibration method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103630871A (en) * 2013-12-09 2014-03-12 国家电网公司 Testing device for dynamic characteristics of electronic energy meter
WO2015085830A1 (en) * 2013-12-09 2015-06-18 国家电网公司 Apparatus for testing dynamic characteristics of electronic energy meter
CN103630871B (en) * 2013-12-09 2016-08-17 国家电网公司 Electronic electric energy meter dynamic characteristic test device
CN104133187A (en) * 2014-05-26 2014-11-05 国家电网公司 System for detecting intelligent electric energy meter and method thereof
CN104133187B (en) * 2014-05-26 2016-01-20 国家电网公司 A kind of system and method thereof detecting intelligent electric energy meter
CN105911509A (en) * 2016-05-27 2016-08-31 国网天津市电力公司 Rapid batch watt-hour meter starting test device pulse alignment control module
CN106054109A (en) * 2016-05-27 2016-10-26 国网天津市电力公司 Fast and batched electric energy meter start-up test method
CN106054107A (en) * 2016-05-27 2016-10-26 国网天津市电力公司 Fast batch electric energy meter false actuation test device pulse alignment control module
CN106093828A (en) * 2016-05-27 2016-11-09 国网天津市电力公司 Rapid batch Basic Error of Energy Meter test calibration method

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