CN106772207B - Voltage and current synchronous keying dynamic power signal generating device - Google Patents

Voltage and current synchronous keying dynamic power signal generating device Download PDF

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CN106772207B
CN106772207B CN201611250605.1A CN201611250605A CN106772207B CN 106772207 B CN106772207 B CN 106772207B CN 201611250605 A CN201611250605 A CN 201611250605A CN 106772207 B CN106772207 B CN 106772207B
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CN106772207A (en
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王学伟
李久辉
王琳
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Beijing University of Chemical Technology
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
    • G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"

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Abstract

The invention provides a voltage and current synchronous keying dynamic power signal generation device, which comprises a three-phase voltage UNInput terminal, three-phase current INThe device comprises an input terminal, a dynamic voltage control unit, a dynamic current control unit, a control terminal and a three-phase voltage and current output terminal. The dynamic voltage control unit adopts a mode that a three-phase voltage transformer and two voltage control silicon controlled rectifier groups are respectively connected in series, and the control signals CON1 and CON2 drive the silicon controlled rectifier groups to be alternately conducted to generate dynamic voltage; the dynamic current control unit adopts a mode that a three-phase current transformer and two current control silicon controlled rectifier groups are respectively connected in series, and the control signals CON3 and CON4 drive the silicon controlled rectifier groups to be alternately conducted to generate dynamic current. According to the invention, through the synchronization of the control signals CON3 and CON1, and CON4 and CON2, the synchronous output of dynamic voltage and dynamic current is realized, the problem that the dynamic characteristic test of the electric energy meter can only be carried out under the condition of dynamic current at present is solved, and the method has wide application in the field of the dynamic characteristic test of the electric energy meter.

Description

Voltage and current synchronous keying dynamic power signal generating device
Technical Field
The invention belongs to the technical field of electric energy meter testing, relates to a voltage and current synchronous keying dynamic power signal generating device, and particularly relates to a voltage and current synchronous keying dynamic power signal generating device for electric energy meter dynamic characteristic testing.
Background
At present, with the construction and development of smart power grids in China, the number and power of dynamic loads in the power grids are continuously increased, and the nonlinearity, the impact and the uncertainty of the dynamic loads cause inaccurate metering of electric energy consumed by an electric energy meter for the dynamic loads, so that the fairness of electric energy charging is influenced. This problem tends to be severe with increasing dynamic loads, which has attracted attention from researchers in this field. At present, the dynamic characteristics of an intelligent electric energy meter and an electronic electric energy meter can only be tested under the conditions of steady-state voltage and dynamic current; how to generate dynamic test voltage and dynamic test current synchronous with the dynamic test voltage to realize dynamic characteristic test of the electric energy meter under the condition of synchronous change of the dynamic voltage and the dynamic current is urgent to be solved effectively. The invention relates to a keying dynamic power signal generating device with synchronous voltage and current, which provides an effective method for solving the problem.
Disclosure of Invention
The invention aims to solve the technical problems of how to generate dynamic voltage, realize the synchronization of the dynamic voltage and the dynamic current and test the dynamic characteristics of an electric energy meter under the condition of the synchronization of the dynamic voltage and the dynamic current, and provides a keying dynamic power signal generating device with the synchronization of the voltage and the current.
The technical scheme adopted by the invention for solving the technical problem is as follows: a voltage and current synchronized keyed dynamic power signal generating device, comprising: comprising a three-phase voltage UNInput terminal 1, three-phase current INAn input terminal 2, a dynamic voltage control unit 11, a dynamic current control unit 12, a control terminal 13 and a three-phase voltage current output terminal 14; three-phase voltage UNThe input terminal 1 is connected to the three-phase input of the dynamic voltage control unit 11, the three-phase current INThe input terminal 2 is connected to a three-phase input of the dynamic current control unit 12, inputs of the dynamic voltage control unit 11 and the dynamic current control unit 12 are connected to the control terminal 13, outputs thereof are connected to the three-phase voltage current output terminal 14, and control signals are input from the control terminal 13 to the dynamic voltage control unit 11 and the dynamic current control unit 12.
The dynamic voltage control unit 11 comprises a three-phase voltage conversion mutual inductor PT 3, a first voltage control silicon controlled rectifier set 5, a second voltage control silicon controlled rectifier set 6 and a voltage detection mutual inductor 9, and the dynamic current control unit 12 comprises a three-phase current conversion mutual inductor CT 4, a first current control silicon controlled rectifier set 7, a second current control silicon controlled rectifier set 8 and a current detection mutual inductor 10.
The invention discloses a dynamic voltage control unit 11 of a key-controlled dynamic power signal generating device, which is characterized in that: three-phase input and three-phase voltage U of three-phase voltage conversion mutual inductor PT 3NInput terminal 1 connection, 100% UNAnd 80% UNThe three-phase output is respectively connected with the three-phase input of the first voltage control silicon controlled rectifier group 5 and the three-phase input of the second voltage control silicon controlled rectifier group 6 in series, the three-phase output of the first voltage control silicon controlled rectifier group 5 and the three-phase output of the second voltage control silicon controlled rectifier group 6 are respectively connected in parallel, the three-phase outputs are connected to the three-phase voltage current output terminal 14 through the voltage detection mutual inductor 9, the first voltage control silicon controlled rectifier group 5 and the second voltage control silicon controlled rectifier group 6 are respectively driven to be switched on and off through control signals CON1 and CON2 of the controlAnd a voltage detection mutual inductor 9 detects three-phase dynamic test voltage and sends a detected dynamic test voltage signal to a control terminal 13.
The dynamic voltage control unit 11 inputs an effective value of UNThe first voltage controls the thyristor group 5 to be at (M)1+M2) The effective value of the conduction output in each power frequency period is 100 percent UNAt this time, the second voltage-controlled thyristor group 6 is turned off, and then the second voltage-controlled thyristor group 6 is at (M)1+M2) The effective value of conduction output in each power frequency period is 80 percent UNAt this time, the first voltage controls the thyristor group 5 to be turned off, so that the dynamic voltage control unit 11 outputs an effective value of 100% UNAnd 80% UNAlternating dynamic test voltages.
The invention discloses a dynamic current control unit 12 of a key-controlled dynamic power signal generating device, which is characterized in that: three-phase input and three-phase current I of three-phase current conversion mutual inductor CT 4NInput terminal 2 connection, 100% INAnd β INThe three-phase output is respectively connected with the three-phase input series of the first current control silicon controlled rectifier group 7 and the second voltage control silicon controlled rectifier group 8, the three-phase output of the first current control silicon controlled rectifier group 7 and the three-phase output of the second current control silicon controlled rectifier group 8 are respectively connected in parallel, the three-phase output is connected to the three-phase voltage current output terminal 14 through the current detection mutual inductor 10, the control signals CON3 and CON4 of the control terminal 13 respectively drive the first current control silicon controlled rectifier group 7 and the second current control silicon controlled rectifier group 8 to be switched on and off, dynamic test current is generated, the current detection mutual inductor 10 detects the three-phase dynamic test current, and the detected dynamic test current signal is sent to.
The dynamic current control unit 12 inputs effective value INThree-phase steady-state current of (1), the first current controlling the thyristor group 7 at M1The effective value of conduction output in a power frequency period is 100 percent INAt this time, the second current control thyristor group 8 is turned off, and then the second current control thyristor group 8 is at M2The effective value of conduction output in each power frequency period is β INAt this time, the first current controls the thyristor group 7 to be turned off, so that the dynamic electricity is generatedThe effective value of the output of the flow control unit 12 is 100% INAnd β INThe value of β is 5% -60% of the dynamic test current which changes alternately.
The invention discloses a key control dynamic power signal generating device, which is characterized in that: in the keying signals input by the control terminal 13, the waveforms of the CON1 and the CON2 are in opposite phases, the CON1 drives the first voltage control thyristor group 5, and the CON2 drives the second voltage control thyristor group 6; the waveform of the CON3 is opposite to that of the CON4, the CON3 drives the first current control controllable silicon group 7, and the CON4 drives the second current control controllable silicon group 8; CON3 and CON1 are synchronous, CON4 and CON2 are synchronous, and the period of the dynamic test voltage is 2 (M) of the period of the input power frequency signal1+M2) The period of the dynamic test current is equal to that of the input power frequency signal (M)1+M2) Multiple, M1And M2Are all integers.
Drawings
FIG. 1: the invention is a structural diagram of a keying dynamic power signal generating device with synchronous voltage and current; in the figure: 1-three phase voltage UNInput terminal, 2-three-phase current INThe system comprises an input terminal, a 3-three-phase voltage conversion transformer PT, a 4-three-phase current conversion transformer CT, a 5-first voltage control silicon controlled rectifier group, a 6-second voltage control silicon controlled rectifier group, a 7-first current control silicon controlled rectifier group, a 8-second current control silicon controlled rectifier group, a 9-voltage detection transformer, a 10-current detection transformer, a 11-dynamic voltage control unit, a 12-dynamic current control unit, a 13-control terminal and a 14-voltage current output terminal, wherein the input terminal is connected with the input terminal;
FIG. 2: the invention relates to a dynamic voltage and dynamic current oscillogram output by a voltage and current synchronous keying dynamic power signal generating device;
FIG. 3: the invention is a key signal waveform diagram when the key dynamic power signal generating device with synchronous voltage and current works.
Detailed Description
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic diagram of a thyristor-modulated dynamic power control apparatus according to the present invention, which is composed of a three-phase voltage UNInput terminal1. Three-phase current INThe dynamic voltage control unit 11 comprises a three-phase voltage conversion mutual inductor PT 3, a first voltage control silicon controlled rectifier set 5, a second voltage control silicon controlled rectifier set 6 and a voltage detection mutual inductor 9, and the dynamic current control unit 12 comprises a three-phase current conversion mutual inductor CT 4, a first current control silicon controlled rectifier set 7, a second current control silicon controlled rectifier set 8 and a current detection mutual inductor 10.
Three-phase input and three-phase voltage U of three-phase voltage conversion mutual inductor PT 3 in dynamic voltage control unit 11NInput terminal 1 connection, 100% UNAnd 80% UNThe three-phase output is respectively connected with the three-phase input series connection of the first voltage control silicon controlled rectifier set 5 and the second voltage control silicon controlled rectifier set 6, the three-phase output of the first voltage control silicon controlled rectifier set 5 and the three-phase output of the second voltage control silicon controlled rectifier set 6 are respectively connected in parallel, the three-phase output is connected to a three-phase voltage current output terminal 14 through a voltage detection mutual inductor 9, the first voltage control silicon controlled rectifier set 5 and the second voltage control silicon controlled rectifier set 6 are respectively driven to be switched on and switched off through a control terminal 13, and the voltage detection mutual inductor 9 detects three-phase dynamic voltage and sends detected dynamic voltage signals to the control terminal 13.
Three-phase input and three-phase current I of three-phase current conversion mutual inductor CT 4 in dynamic current control unit 12NInput terminal 2 connection, 100% INAnd β INThe three-phase output is respectively connected with the three-phase input series connection of the first current control silicon controlled rectifier 7 and the second voltage control silicon controlled rectifier 8, the three-phase output of the first current control silicon controlled rectifier 7 and the three-phase output of the second current control silicon controlled rectifier 8 are respectively connected in parallel, the three-phase output is connected to a three-phase voltage current output terminal 14 through a current detection mutual inductor 10, the control signal through a control terminal 13 respectively drives the first current control silicon controlled rectifier 7 and the second current control silicon controlled rectifier 8 to be switched on and off, and the current detection mutual inductor 10 detects three-phase dynamic current and sends the detected dynamic current signal to the control terminal 13.
When the invention is used, the three-phase voltage UNInput terminal 1, three-phase current INInput terminal2 respectively inputting a steady-state alternating voltage U provided by a three-phase standard power sourceNAnd steady-state alternating current IN. The three-phase voltage conversion mutual inductor PT 3 realizes the effective value conversion of the steady-state voltage, and the output effective value is 100 percent UNAnd 80% UNThe voltages are respectively sent to a first voltage control silicon controlled rectifier group 5 and a second voltage control silicon controlled rectifier group 6; the three-phase current conversion mutual inductor CT 4 realizes the effective value conversion of the steady-state current, and the output effective value is 100 percent INAnd β INThe current of the first current control thyristor group 7 and the second current control thyristor group 8 are respectively sent to the first current control thyristor group and the second current control thyristor group. Synchronous keying signals CON1, CON2, CON3 and CON4 are input from the control terminal 13, wherein the control signals CON1 and CON2 respectively drive the first voltage control thyristor group 5 and the second voltage control thyristor group 6, so that the dynamic voltage control unit 11 outputs an effective value of 100% UN、80％UNAn alternating voltage; the control signals CON3 and CON4 respectively drive the first current control thyristor group 7 and the second current control thyristor group 8, so that the effective value output by the dynamic current control unit 12 is 100% IN、βINAlternating current. The voltage detection transformer 9 detects three-phase dynamic test voltage and sends a detected dynamic test voltage signal to the control terminal 13, and the current detection transformer 10 detects three-phase dynamic test current and sends a detected dynamic test current signal to the control terminal 13. The three-phase voltage and current output terminal 14 transmits the dynamic test voltage and the dynamic test current to the electric energy meter to be tested to generate a keying dynamic power signal.
The dynamic voltage control unit 11 of the device adopts 100 percent U of a three-phase voltage conversion mutual inductor PT 3NAnd 80% UNThe three-phase output is respectively connected with the first voltage control silicon controlled rectifier group 5 and the second voltage control silicon controlled rectifier group 6 in series, and the dynamic current control unit 12 adopts 100% I of a three-phase current conversion mutual inductor CT 4NAnd β INThe three-phase output is connected in series with the first current controlled silicon controlled set 7 and the second current controlled silicon controlled set 8 respectively, fig. 3 shows the key control signal inputted from the control terminal 13, firstly the control signal CON1 drives the first voltage controlled silicon controlled set 5 to turn on, and CON2 drives the second voltage controlled silicon controlled set 6 to turn offThe effective value output by the dynamic voltage control unit 11 is 100% UNMeanwhile, the control signal CON3 drives the first current-controlled thyristor group 7 to be turned on, the CON4 drives the second current-controlled thyristor group 8 to be turned off, and the dynamic current control unit 12 outputs an effective value of 100% INThe current of (a); m1After each power frequency period, the control signal CON3 drives the first current control thyristor group 7 to turn off, and the CON4 drives the second current control thyristor group 8 to turn on, and the output effective value is β INThe current of (a); m2After each power frequency period, the control signal CON1 drives the first voltage controlled thyristor group 5 to turn off, and the CON2 drives the second voltage controlled thyristor group 6 to turn on, and the output effective value is 80% UNMeanwhile, the control signal CON3 drives the first current control thyristor group 7 to be turned on, and CON4 drives the second current control thyristor group 8 to be turned off, and the output effective value is 100% INThe current of (a); m1After each power frequency period, the control signal CON3 drives the first current control thyristor group 7 to turn off, and the CON4 drives the second current control thyristor group 8 to turn on, and the output effective value is β INAnd finally, the dynamic voltage control unit 11 outputs a period of 2 (M)1+M2) The dynamic current control unit 12 outputs a dynamic test voltage of (M) and a dynamic current control unit output period of (M)1+M2) The dynamic test current of (2). The waveforms of the output dynamic voltage and the dynamic current are shown in fig. 2.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is apparent that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (5)

1. A voltage and current synchronized keyed dynamic power signal generating device, comprising: comprising a three-phase voltage UNInput terminal (1), three-phase current INInput terminal (2), dynamic voltage control unit (11), dynamic current control unit (12), control terminal (13) and three-phase voltage electricityA current output terminal (14); three-phase voltage UNThe input terminal (1) is connected with the three-phase input of the dynamic voltage control unit (11), and the three-phase current INThe input terminal (2) is connected with the three-phase input of the dynamic current control unit (12), the inputs of the dynamic voltage control unit (11) and the dynamic current control unit (12) are respectively connected to the control terminal (13), the output of the dynamic voltage control unit is connected to the three-phase voltage current output terminal (14), and the control terminal (13) inputs control signals to the dynamic voltage control unit (11) and the dynamic current control unit (12);
the dynamic voltage control unit (11) comprises a three-phase voltage conversion mutual inductor PT (3), a first voltage control silicon controlled rectifier group (5), a second voltage control silicon controlled rectifier group (6) and a voltage detection mutual inductor (9), and the dynamic current control unit (12) comprises a three-phase current conversion mutual inductor CT (4), a first current control silicon controlled rectifier group (7), a second current control silicon controlled rectifier group (8) and a current detection mutual inductor (10); three-phase input and three-phase voltage U of three-phase voltage conversion mutual inductor PT (3)NInput terminal (1) connected, 100% UNAnd 80% UNThe three-phase output is respectively connected with the three-phase input series connection of the first voltage control silicon controlled rectifier group (5) and the second voltage control silicon controlled rectifier group (6), the three-phase output of the first voltage control silicon controlled rectifier group (5) and the three-phase output of the second voltage control silicon controlled rectifier group (6) are respectively connected in parallel, the three-phase output is connected to a three-phase voltage current output terminal (14) through a voltage detection mutual inductor (9), control signals CON1 and CON2 of a control terminal (13) respectively drive the first voltage control silicon controlled rectifier group (5) and the second voltage control silicon controlled rectifier group (6) to be switched on and off, dynamic test voltage is generated, the voltage detection mutual inductor (9) detects three-phase dynamic test voltage, and sends the detected dynamic test voltage signal to the control terminal (.
2. Voltage and current synchronized keyed dynamic power signal generation device according to claim 1, characterized by the dynamic voltage control unit (11) input with an effective value of UNThe first voltage controls the thyristor group (5) to be at (M)1+M2) The effective value of the conduction output in each power frequency period is 100 percent UNAt this time, the second voltage controls the thyristor group (6) to turn off, then the firstTwo voltage controlled silicon controlled rectifier (6) are in (M)1+M2) The effective value of conduction output in each power frequency period is 80 percent UNAt the moment, the first voltage controls the silicon controlled rectifier group (5) to be switched off, so that the effective value output by the dynamic voltage control unit (11) is 100 percent UNAnd 80% UNAlternating dynamic test voltages.
3. The voltage-and-current-synchronized keyed dynamic power signal generating device of claim 1, wherein: three-phase input and three-phase current I of three-phase current conversion mutual inductor CT (4)NInput terminal (2) connected, 100% INAnd β INThe three-phase output is respectively connected with the three-phase input series of the first current control controllable silicon group (7) and the second current control controllable silicon group (8), the three-phase output of the first current control controllable silicon group (7) and the second current control controllable silicon group (8) is respectively connected in parallel, the three-phase output is connected to a three-phase voltage current output terminal (14) through a current detection mutual inductor (10), control signals CON3 and CON4 of a control terminal (13) respectively drive the first current control controllable silicon group (7) and the second current control controllable silicon group (8) to be switched on and off, dynamic test current is generated, the current detection mutual inductor (10) detects three-phase dynamic test current, and the detected dynamic test current signal is sent to the control terminal (13).
4. The voltage-current synchronized keyed dynamic power signal generating device of claim 1 or 3, wherein: the dynamic current control unit (12) inputs the effective value of INThe first current controls the controllable silicon group (7) to be at M1The effective value of conduction output in a power frequency period is 100 percent INAt this time, the second current control thyristor group (8) is turned off, and then the second current control thyristor group (8) is at M2The effective value of conduction output in each power frequency period is β INAt the moment, the first current controls the silicon controlled rectifier group (7) to be switched off, so that the effective value output by the dynamic current control unit (12) is 100 percent INAnd β INThe value of β is 5% -60% of the dynamic test current which changes alternately.
5. The voltage-current synchronized keyed dynamic power signal generating device of claim 1 or 3, wherein: in the keying signals input by the control terminal (13), the waveforms of the CON1 and the CON2 are in opposite phases, the CON1 drives the first voltage control controllable silicon group (5), and the CON2 drives the second voltage control controllable silicon group (6); the CON3 and the CON4 have opposite wave forms, the CON3 drives the first current control controllable silicon group (7), and the CON4 drives the second current control controllable silicon group (8); CON3 and CON1 are synchronous, CON4 and CON2 are synchronous, and the period of dynamic test voltage is 2 (M) of the period of input power frequency signal1+M2) The period of the dynamic test current is equal to that of the input power frequency signal (M)1+M2) Multiple, M1And M2Are all integers.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103091659A (en) * 2013-01-22 2013-05-08 黑龙江省电力科学研究院 Electric energy meter dynamic measurement cycle power sequence proportional allocation calibration method
US8692561B2 (en) * 2011-08-11 2014-04-08 International Business Machines Corporation Implementing chip to chip calibration within a TSV stack
CN104345294A (en) * 2014-11-04 2015-02-11 国家电网公司 Electric energy meter dynamic performance test device
CN104502644A (en) * 2014-12-12 2015-04-08 国家电网公司 Ultrahigh-voltage direct-current voltage generator for pollution test

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8661285B2 (en) * 2008-06-06 2014-02-25 Uniquify, Incorporated Dynamically calibrated DDR memory controller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8692561B2 (en) * 2011-08-11 2014-04-08 International Business Machines Corporation Implementing chip to chip calibration within a TSV stack
CN103091659A (en) * 2013-01-22 2013-05-08 黑龙江省电力科学研究院 Electric energy meter dynamic measurement cycle power sequence proportional allocation calibration method
CN104345294A (en) * 2014-11-04 2015-02-11 国家电网公司 Electric energy meter dynamic performance test device
CN104502644A (en) * 2014-12-12 2015-04-08 国家电网公司 Ultrahigh-voltage direct-current voltage generator for pollution test

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
电功率采样测量技术及其发展概况;王学伟 等;《电测与仪表》;20020131;第39卷(第433期);第5-9、39页 *

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