CN201993462U - Three-phase intelligent electric energy meter checking device - Google Patents

Three-phase intelligent electric energy meter checking device Download PDF

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Publication number
CN201993462U
CN201993462U CN2011200338749U CN201120033874U CN201993462U CN 201993462 U CN201993462 U CN 201993462U CN 2011200338749 U CN2011200338749 U CN 2011200338749U CN 201120033874 U CN201120033874 U CN 201120033874U CN 201993462 U CN201993462 U CN 201993462U
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CN
China
Prior art keywords
electric energy
energy meter
phase
test
power consumption
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CN2011200338749U
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Chinese (zh)
Inventor
姜雪明
王炜
张燕
黄金娟
王祥
冷学道
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浙江省电力公司
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Priority to CN2011200338749U priority Critical patent/CN201993462U/en
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Publication of CN201993462U publication Critical patent/CN201993462U/en

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Abstract

The utility model discloses a three-phase intelligent electric energy meter checking device and relates to an electric energy meter checking device. The common electric energy meter checking device has long checking time; in the process of checking power consumption of an electric energy meter, additional instruments need to be used; only one electric energy meter can be checked each time, so that the efficiency is low; and the common electric energy meter checking device is helpless to a cost control trip test of an intelligent electric energy meter. The three-phase intelligent electric energy meter checking device comprises a computer, a standard clock instrument, a three-phase program control source, a standard electric energy meter, error calculators, power consumption testers and a communication module and is characterized in that the checking device also comprises trip monitoring units; the checking device is provided with a plurality of testing stations; each testing station is provided with one power consumption tester, one trip monitoring unit and one error calculator; each error calculator is provided with a plurality of calculating modules; and the standard electric energy meter is provided with a metering output module. The three-phase intelligent electric energy meter checking device is rapid to check the electric energy meter and can also be used for checking the power consumption and the cost control trip.

Description

The three-phase intelligent calibrator for watt-hour meter

Technical field

The utility model relates to a kind of calibrator for watt-hour meter.

Background technology

In intelligent grid, intelligent electric energy meter has been endowed a lot of new functions, has important effect at present.According to the technical manual of three-phase intelligent electric energy meter, need test to its active energy error in dipping, reactive energy error in dipping, clocking error, and will examine, but also will test expense control function to the power consumption of himself.

Common calibrator for watt-hour meter is that serial is carried out for the meritorious error-tested of electric energy meter, idle error-tested, clock accuracy check, and proving time is long; For the check of electric energy meter power consumption, need to use extra instrument, can only check an electric energy meter, inefficiency at every turn; For intelligent electric energy meter to take the control trip test powerless.

The utility model content

The technical assignment of the technical problems to be solved in the utility model and proposition is that the prior art scheme is improved and improved, and a kind of three-phase intelligent calibrator for watt-hour meter is provided, and is quick to reach test of kilo watthour meter, can check the purpose of power consumption and expense control tripping operation simultaneously.For this reason, the utility model is taked following technical scheme.

The three-phase intelligent calibrator for watt-hour meter comprises computing machine, is used for installing check software with control test equipment and handle testing result; The standard time clock instrument is used to take place the time clock of constant frequency; The program control source of three-phase is for standard electric energy meter and tested electric energy meter provide three-phase current and voltage; Standard electric energy meter, for tested electric energy meter with reference to electric energy meter; Error Calculator is used for calculating according to standard electric energy meter and standard time clock instrument the error of tested electric energy meter; The power consumption test instrument, the power consumption that is used to test tested table; Communication module is used to realize communicating to connect between computing machine and equipment, the tested electric energy meter, it is characterized in that: verifying attachment also comprises can monitor the trip signal and the tripping operation monitoring means of short circuit test station current return automatically; Verifying attachment is provided with a plurality of test station, and each test station is established a power consumption test instrument, a tripping operation monitoring means and an Error Calculator; Described Error Calculator is provided with the counting computing module that can count and calculate simultaneously three road high-frequency impulses, three road low-frequency pulses of input simultaneously; Described standard electric energy meter is provided with and can measures active energy and reactive energy simultaneously and export the metering output module of active energy pulse and reactive energy pulse simultaneously.Standard electric energy meter can be exported active energy pulse and reactive energy pulse simultaneously, and Error Calculator can be counted simultaneously to three group pulses of input, Error Calculation, improve detection speed, solve traditional calibrator for watt-hour meter for routine inspection projects such as the meritorious/reactive energy error in dipping of three-phase intelligent electric energy meter and clocking error can only check item by item, the problem of inefficiency.And solve a power consumption test difficult problem, and increase tripping operation monitoring check, improve inspection item, each test station is used to test an electric energy meter, establishes a plurality of test station and can check simultaneously a plurality of electric energy meters, saves proving time.

As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature.

Described tripping operation detecting unit is established the automatic short circuit functional module that is used to detect built-in relay tripping operation measuring ability module, the external relay tripping operation measuring ability module of current open and is used for current open is carried out short circuit.When detecting, the test side of built-in relay tripping operation measuring ability module and the three-phase current incoming line of tested electric energy meter are connected in parallel, and the test side of external relay tripping operation measuring ability module is connected with the tripping operation control signal output ends of tested electric energy meter.

The applied power that described power consumption test unit is provided with the active power test module and the reactive power test module that are used to detect tested electric energy meter every phase voltage input circuit active power and reactive power, be used to detect the applied power consumption of the every phase current input circuit of tested electric energy meter consumes test module and is used to calculate the total active power of tested electrical energy meter electricity hydraulic circuit and applied power consumption, the total applied power power consumed test computing module of current return.

Described communication module comprises devices communicating bus and electric energy meter communication bus, computing machine links to each other by the program control source of devices communicating bus and three-phase, standard electric energy meter, Error Calculator, power consumption test unit, tripping operation detecting unit and makes computing machine communicate control and test result is passed to computing machine checkout equipment by the devices communicating bus, and computing machine links to each other with tested electric energy meter by the electric energy meter communication bus.

The program control source of three-phase is provided with communication interface and is connected three-phase voltage and angle between the amplitude of three-phase current, any phase voltage and the electric current and the angle between the three-phase voltage that the program control source output of computer control three-phase is set with the computing machine communication.

The beneficial effects of the utility model are: can measure active energy error, the reactive energy sum of errors clocking error of three-phase intelligent electric energy meter simultaneously, improve the checkability of intelligent electric energy meter; The three-phase voltage loop active power that can measure intelligent electric energy meter consumes and applied power consumption, can measure the applied power consumption of three-phase current loop, solves a power consumption test difficult problem; But loading current carries out the trip test of built-in relay intelligent electric energy meter, can carry out the trip test of external relay intelligent electric energy meter, external tripping operation control signal can be pulse, level signal or alternating current 220V, solve built-in/external relay intelligent electric energy meter trip test problem simultaneously, solved the detection problem of the dissimilar tripping operation control signals of external relay intelligent electric energy meter especially.

Description of drawings

Fig. 1 is a theory diagram of the present utility model.

Embodiment

Below in conjunction with Figure of description the technical solution of the utility model is described in further detail.

The utility model comprises computing machine, is used for installing check software with control test equipment and handle testing result; The standard time clock instrument is used to take place the time clock of constant frequency; The program control source of three-phase is for standard electric energy meter and tested electric energy meter provide three-phase current and voltage; Standard electric energy meter, for tested electric energy meter with reference to electric energy meter; Error Calculator is used for calculating according to standard electric energy meter and standard time clock instrument the error of tested electric energy meter; The power consumption test instrument, the power consumption that is used to test tested table; Communication module is used to realize communicating to connect between computing machine and equipment, the tested electric energy meter; The tripping operation monitoring means is used to monitor trip signal and automatic short circuit test station current return; Verifying attachment is provided with a plurality of test station, and each test station is established a power consumption test instrument, a tripping operation monitoring means and an Error Calculator; The Error Calculator of described Error Calculator for counting and calculate simultaneously three road high-frequency impulses, three road low-frequency pulses of input simultaneously; Described standard electric energy meter is for measuring active energy and reactive energy simultaneously and exporting the standard electric energy meter of active energy pulse and reactive energy pulse simultaneously.The tripping operation detecting unit is established the automatic short circuit functional module that is used to detect built-in relay tripping operation measuring ability module, the external relay tripping operation measuring ability module of current open and is used for current open is carried out short circuit.The applied power that the power consumption test unit is provided with the active power test module and the reactive power test module that are used to detect tested electric energy meter every phase voltage input circuit active power and reactive power, be used to detect the applied power consumption of the every phase current input circuit of tested electric energy meter consumes test module and is used to calculate the total active power of tested electrical energy meter electricity hydraulic circuit and applied power consumption, the total applied power power consumed test computing module of current return.Communication module comprises devices communicating bus and electric energy meter communication bus, computing machine links to each other by the program control source of devices communicating bus and three-phase, standard electric energy meter, Error Calculator, power consumption test unit, tripping operation detecting unit and makes computing machine communicate control and test result is passed to computing machine checkout equipment by the devices communicating bus, and computing machine links to each other with tested electric energy meter by the electric energy meter communication bus.The program control source of three-phase is provided with communication interface and is connected three-phase voltage and angle between the amplitude of three-phase current, any phase voltage and the electric current and the angle between the three-phase voltage that the program control source output of computer control three-phase is set with the computing machine communication.

Three-phase intelligent test of kilo watthour meter method may further comprise the steps:

1) checkout equipment and tested electric energy meter Connection Step, prepare the program control source of three-phase 1 cover, 1 of standard time clock has active energy pulse/reactive energy pulse 1 of the standard electric energy meter of output function simultaneously, and having three road high frequencies/three road low frequencies, to import the Error Calculator N(N of computing function simultaneously be the test station number, it can be any positive integer, as 16,24 etc.) individual, power consumption test unit N, N of tripping operation detecting unit, 2 groups of RS485 communication buss, one in the computing machine of installation and measuring software.The program control source output of three-phase three-phase voltage, three-phase current insert standard electric energy meter and many tested electric energy meters, Voltage Series, current parallel.The Error Calculator of corresponding test station is received in the active energy pulse output of tested electric energy meter, reactive energy pulse output and time clock output simultaneously.The meritorious pulse input end of the standard of Error Calculator links to each other with the meritorious pulse output end of standard scale, and the idle pulse input end of standard links to each other with the idle pulse output end of standard scale, and the standard time clock pulse input end links to each other with the output terminal of standard time clock.The power consumption test instrument links to each other Voltage Series, current parallel with voltage, the current terminal of the tested electric energy meter of corresponding test station.The built-in relay tripping operation test side of tripping operation detecting unit and the three-phase current incoming line of tested electric energy meter are connected in parallel, and external relay tripping operation test side is connected to the tripping operation control signal output ends of tested electric energy meter; Control computer is connected to the PORT COM of the program control source of three-phase, standard electric energy meter, Error Calculator, power consumption test unit, tripping operation detecting unit by the devices communicating bus; Control computer is connected to each tested electric energy meter by the ammeter communication bus.

2) electric energy meter error testing procedure, computing machine sends the instruction that contains three-phase voltage, electric current, phase value by the devices communicating bus to program control source, the specific voltage and current of program control source output, standard electric energy meter measures and exports simultaneously active energy pulse, reactive energy pulse simultaneously to active energy, reactive energy, the pulse of tested electric energy meter output active energy, reactive energy pulse, time clock, standard time clock sends the standard time clock pulse signal; Computing machine sends the instruction that contains the presetting pulse number by the devices communicating bus to Error Calculator, Error Calculator begins three road high-frequency impulses and three road low-frequency pulses of input are simultaneously counted the also error of calculation simultaneously after receiving instruction, and result of calculation comprises meritorious electric energy error value, reactive energy error amount, clocking error value; Counter control software reads the error result data by the devices communicating bus from Error Calculator.

3) electric energy meter power consumption test step, computing machine sends the instruction that starts test by the devices communicating bus to the power consumption test unit; The active power and the applied power consumption of the every phase voltage input circuit of the tested electric energy meter of electric energy meter power consumption test unit testing, total active power of tested electrical energy meter electricity hydraulic circuit and applied power consumption, the total applied power consumption of current return are calculated in the applied power consumption of the every phase current input circuit of tested electric energy meter; Computing machine reads the power consumption test value by the devices communicating bus from the power consumption test unit.

4) electric energy meter takes control tripping operation testing procedure, before electric energy meter expense control tripping operation testing procedure, need the built-in relay tripping operation test side of tripping operation detecting unit and the three-phase current incoming line of tested electric energy meter are connected in parallel, or external relay tripping operation test side is connected to the tripping operation control signal output ends of tested electric energy meter; When electric energy meter took control tripping operation test, computing machine sent instruction by the devices communicating bus to the tripping operation detecting unit; The tripping operation detecting unit switches to the relevant detection passage according to the instruction of computing machine, begins tripping operation and detects; If tested electric energy meter is long-range expense control intelligent electric energy meter, computing machine sends trip command by the ammeter communication bus to it, the tripping operation of order electric energy meter; If tested electric energy meter is local expense control electric energy meter, the program control source of computer control keeps power output always, presets the electricity charge in tested electric energy meter exhausts table, trips; When the tripping operation detecting unit detects the tripping operation of built-in relay, the current return of the corresponding test station of short circuit at once; Computing machine reads the tripping operation testing result by the devices communicating bus from the tripping operation detecting unit; Computing machine sends to tested electric energy meter by the ammeter communication bus and supplements instruction with money, perhaps supplements with money by artificial plug-in card, and compounding practice personnel's operation makes tested electric energy meter generation feed motion; Computing machine reads the combined floodgate testing result by the devices communicating bus from the tripping operation detecting unit.

In order to match with various electric energy meters, the tripping operation control signal that external relay tripping operation inserts when detecting is 220V interchange, pulse or level.

For improving accuracy of detection, pulse of high frequency active energy and reactive energy pulsed frequency that the three-phase standard electric energy meter is exported simultaneously are not less than 1000Hz; The clock frequency of standard time clock instrument generation constant frequency is not less than 1MHz.Error Calculator is calculated three group pulse signal errorss, and wherein the error amount resolution that calculates of two group pulses is not less than 0.0001%, and the error amount resolution that another group pulse calculates is not less than 0.00005%.

Claims (5)

1. the three-phase intelligent calibrator for watt-hour meter comprises computing machine, is used for installing check software with control test equipment and handle testing result; The standard time clock instrument is used to take place the time clock of constant frequency; The program control source of three-phase is for standard electric energy meter and tested electric energy meter provide three-phase current and voltage; Standard electric energy meter, for tested electric energy meter with reference to electric energy meter; Error Calculator is used for calculating according to standard electric energy meter and standard time clock instrument the error of tested electric energy meter; The power consumption test instrument, the power consumption that is used to test tested table; Communication module is used to realize communicating to connect between computing machine and equipment, the tested electric energy meter, it is characterized in that: verifying attachment also comprises can monitor the trip signal and the tripping operation monitoring means of short circuit test station current return automatically; Verifying attachment is provided with a plurality of test station, and each test station is established a power consumption test instrument, a tripping operation monitoring means and an Error Calculator; Described Error Calculator is provided with the counting computing module that can count and calculate simultaneously three road high-frequency impulses, three road low-frequency pulses of input simultaneously; Described standard electric energy meter is provided with and can measures active energy and reactive energy simultaneously and export the metering output module of active energy pulse and reactive energy pulse simultaneously.
2. three-phase intelligent calibrator for watt-hour meter according to claim 1 is characterized in that: described tripping operation detecting unit is established the automatic short circuit functional module that is used to detect built-in relay tripping operation measuring ability module, the external relay tripping operation measuring ability module of current open and is used for current open is carried out short circuit.
3. three-phase intelligent calibrator for watt-hour meter according to claim 1 is characterized in that: the applied power that described power consumption test unit is provided with the active power test module and the reactive power test module that are used to detect tested electric energy meter every phase voltage input circuit active power and reactive power, be used to detect the applied power consumption of the every phase current input circuit of tested electric energy meter consumes test module and is used to calculate the total active power of tested electrical energy meter electricity hydraulic circuit and applied power consumption, the total applied power power consumed test computing module of current return.
4. according to claim 1 or 2 or 3 described three-phase intelligent calibrator for watt-hour meter, it is characterized in that: described communication module comprises devices communicating bus and electric energy meter communication bus, computing machine links to each other by the program control source of devices communicating bus and three-phase, standard electric energy meter, Error Calculator, power consumption test unit, tripping operation detecting unit and makes computing machine communicate control and test result is passed to computing machine checkout equipment by the devices communicating bus, and computing machine links to each other with tested electric energy meter by the electric energy meter communication bus.
5. three-phase intelligent calibrator for watt-hour meter according to claim 4 is characterized in that: the program control source of three-phase is provided with communication interface and is connected three-phase voltage and angle between the amplitude of three-phase current, any phase voltage and the electric current and the angle between the three-phase voltage that the program control source output of computer control three-phase is set with the computing machine communication.
CN2011200338749U 2011-01-31 2011-01-31 Three-phase intelligent electric energy meter checking device CN201993462U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102087352A (en) * 2011-01-31 2011-06-08 浙江省电力公司 Three-phase intelligent watt-hour meter inspection device and method
CN102565753A (en) * 2012-01-30 2012-07-11 江苏省计量科学研究院 Portable electromagnetic compatibility (EMC) test-level pulse timer for electric energy meter
CN102608560A (en) * 2012-04-01 2012-07-25 贵州电力试验研究院 Detection device for measuring accuracy of electric energy meter
CN102928805A (en) * 2012-10-19 2013-02-13 国电南京自动化股份有限公司 Multi-meter position instrument for calibrating digital energy meters
CN103018706A (en) * 2012-11-16 2013-04-03 浙江省电力公司电力科学研究院 Method and system for forecasting rotation cycle of intelligent electric meter
CN103163370A (en) * 2013-02-26 2013-06-19 河北省电力公司电力科学研究院 Testing method for intelligent electric energy meter clock frequency under high-temperature environment
CN106501764A (en) * 2017-01-12 2017-03-15 国网江苏省电力公司电力科学研究院 The real-time contrastive test system and method for the online electric energy error of intelligent substation electric energy meter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102087352A (en) * 2011-01-31 2011-06-08 浙江省电力公司 Three-phase intelligent watt-hour meter inspection device and method
CN102087352B (en) * 2011-01-31 2013-02-13 浙江省电力公司 Three-phase intelligent watt-hour meter inspection device and method
CN102565753A (en) * 2012-01-30 2012-07-11 江苏省计量科学研究院 Portable electromagnetic compatibility (EMC) test-level pulse timer for electric energy meter
CN102608560A (en) * 2012-04-01 2012-07-25 贵州电力试验研究院 Detection device for measuring accuracy of electric energy meter
CN102928805A (en) * 2012-10-19 2013-02-13 国电南京自动化股份有限公司 Multi-meter position instrument for calibrating digital energy meters
CN102928805B (en) * 2012-10-19 2015-11-18 国电南京自动化股份有限公司 Multi-epitope digitalized electrical energy meter tester
CN103018706A (en) * 2012-11-16 2013-04-03 浙江省电力公司电力科学研究院 Method and system for forecasting rotation cycle of intelligent electric meter
CN103018706B (en) * 2012-11-16 2014-10-22 浙江省电力公司电力科学研究院 Method and system for forecasting rotation cycle of intelligent electric meter
CN103163370A (en) * 2013-02-26 2013-06-19 河北省电力公司电力科学研究院 Testing method for intelligent electric energy meter clock frequency under high-temperature environment
CN103163370B (en) * 2013-02-26 2016-12-28 河北省电力公司电力科学研究院 A kind of method of testing of intelligent electric energy meter clock frequency under high-temperature environment
CN106501764A (en) * 2017-01-12 2017-03-15 国网江苏省电力公司电力科学研究院 The real-time contrastive test system and method for the online electric energy error of intelligent substation electric energy meter
CN106501764B (en) * 2017-01-12 2019-03-19 国网江苏省电力公司电力科学研究院 The real-time contrastive test method of the online electric energy error of intelligent substation electric energy meter

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