CN205193269U - A voltage drop test appearance for smart electric meter - Google Patents
A voltage drop test appearance for smart electric meter Download PDFInfo
- Publication number
- CN205193269U CN205193269U CN201521042839.8U CN201521042839U CN205193269U CN 205193269 U CN205193269 U CN 205193269U CN 201521042839 U CN201521042839 U CN 201521042839U CN 205193269 U CN205193269 U CN 205193269U
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- voltage
- bipolar transistor
- pressure regulator
- insulated gate
- gate bipolar
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Abstract
The utility model provides a voltage drop test appearance for smart electric meter, the tester includes electrical unit, first voltage regulator, second voltage regulator, first insulation bars bipolar transistor, second insulated gate bipolar transistor, the control unit and wave form detecting element. The utility model discloses can be according to the requirement that specification and voltage fall, micro -interruptions is experimental by test article, arbitrary set for fall before with fall after voltage amplitude voltage inception phase place when falling, simple structure, characteristics such as with low costs, and the amplitude and the phase place of voltage when coming testing through wave form monitor cell, the measurement personnel of being convenient for carries out observiation and analysis to experimental wave form.
Description
Technical field
The utility model relates to a kind of Voltage Drop tester for intelligent electric meter, belongs to electric measuring instrument technical field.
Background technology
As the intelligent electric meter of intelligent grid important component part, carry the vital task of measuring accurately and reliably of electricity consumption user institute power consumption.But, due to produce once in a while in high pressure, middle pressure and low voltage electric network short circuit, earth fault, or there is suddenly large change in load, the voltage of intelligent electric meter can be caused to fall, and reaches the 220V magnitude of voltage that this equipment normally runs.The factory specification regulation that State Grid Corporation of China's intelligent electric meter is relevant, when the working voltage of ammeter is reduced to less than 60% of normal operating voltage, ammeter detects power loss event, and active reporting is to power information acquisition system, when voltage resume is to more than 60%, the data in ammeter should not be lost and can normally be run.
For protection and the data of storage list inside; intelligent electric meter all has outage detection unit; but the detection of power loss unit of some ammeter falls to make react fast voltage; cause before detection of power loss unit provides signal; the output voltage of direct supply has been reduced to below minimum operation voltage, now loss of data.When supply voltage recovers, ammeter is cisco unity malfunction still.Therefore, Voltage Drop test need be carried out to intelligent electric meter, two kinds are mainly contained at present for the equipment detected, a kind of testing tool adopting pressure regulator and thyristor or bidirectional thyristor composition, due to conducting when thyristor has a voltage zero-cross, the feature disconnected during current over-zero, its shortcoming to simulate the situation that initial drop-off voltage phase place is 0 ° and 180 °; The another kind of testing tool adopting waveform generator and power amplifier composition, although this quasi-instrument have waveform distortion little and fall time voltage initial phase arbitrary advantage, its complex structure and cost is relatively expensive.
Summary of the invention
The purpose of this utility model is, according to the deficiency of intelligent electric meter being carried out to the existence of Voltage Drop testing apparatus, the utility model proposes a kind of Voltage Drop tester for intelligent electric meter.
The technical solution of the utility model is, a kind of Voltage Drop tester for intelligent electric meter comprises power supply unit, the first pressure regulator, the second pressure regulator, the first insulated gate bipolar transistor (IGBT1), the second insulated gate bipolar transistor (IGBT2), control module and waveform detecting unit.
First pressure regulator is connected power supply unit with the input end of the second pressure regulator; The pressure regulation contact end of the first pressure regulator connects the drain electrode of the first insulated gate bipolar transistor, and the pressure regulation contact end of the second pressure regulator connects the drain electrode of the second insulated gate bipolar transistor; The signal grid control end connection control unit respectively of the first insulated gate bipolar transistor and the second insulated gate bipolar transistor; Common port after first insulated gate bipolar transistor is connected with the source electrode of the second insulated gate bipolar transistor connects waveform detecting unit and test specimen unit respectively; First pressure regulator is connected waveform detecting unit and test specimen unit respectively with the common port of the second pressure regulator.
Input two end of the first pressure regulator is connected with the phase line of power supply unit and zero line, to obtain the primary side voltage of 220V respectively; The pressure regulation contact end of the first pressure regulator is connected with one end of IGBT1, by regulating the pressure regulation contact of the first pressure regulator, to obtain the voltage magnitude before falling; Input two end of the second pressure regulator is connected with the phase line of power supply unit and zero line, to obtain the primary side voltage of 220V respectively; The pressure regulation contact end of the second pressure regulator is connected with one end of IGBT2, by regulating the pressure regulation contact of the second pressure regulator, to obtain the voltage magnitude after falling; The other end of IGBT1 with IGBT2 is then connected, and is connected with one end of waveform monitoring means; The other end of waveform monitoring means is connected with the zero line of power supply unit; When waveform monitoring means is used for detection experiment, the amplitude of voltage and phase place, be convenient to carry out observation analysis testing staff to test waveform; The signal control end of IGBT1 with IGBT2 is connected with control module, by the conducting Trigger Angle of control module control IGBT1 and IGBT2, by controlling its turn-on and turn-off, and then voltage initial phase when control voltage is fallen.
The beneficial effects of the utility model are: the present invention can according to the requirement of the specification of product to be tested and Voltage Drop, short interruptions test, arbitrarily setting fall before with fall after voltage magnitude and voltage initial phase when falling, structure is simple, the features such as cost is low; And the amplitude of voltage and phase place, be convenient to testing staff and carry out observation analysis to test waveform when carrying out detection experiment by waveform monitoring means.
Accompanying drawing explanation
Fig. 1 is the utility model tester structural representation.
Embodiment
Embodiment of the present utility model as shown in Figure 1.
A kind of Voltage Drop tester for intelligent electric meter of the present embodiment comprises power supply unit, the first pressure regulator, the second pressure regulator, the first insulated gate bipolar transistor (IGBT1), the second insulated gate bipolar transistor (IGBT2), control module and waveform detecting unit.First pressure regulator is connected power supply unit with the input end of the second pressure regulator; The pressure regulation contact end of the first pressure regulator connects the drain electrode of the first insulated gate bipolar transistor, and the pressure regulation contact end of the second pressure regulator connects the drain electrode of the second insulated gate bipolar transistor; The signal grid control end connection control unit respectively of the first insulated gate bipolar transistor and the second insulated gate bipolar transistor; Common port after first insulated gate bipolar transistor is connected with the source electrode of the second insulated gate bipolar transistor connects waveform detecting unit and test specimen unit respectively; First pressure regulator is connected waveform detecting unit and test specimen unit respectively with the common port of the second pressure regulator.
In the present embodiment, for meeting the requirement of GB/T17215.301-2007 " multifunctional electric energy meter particular/special requirement " and GB/T17215.211-2006 " alternating current measuring equipment-General Requirement, test and test condition the 11st part: measuring equipment ", the voltage dip of voltage dip and short interruptions test needs 50%, the time of falling is 1min temporarily, falls number of times temporarily 1 time.
The power supply unit access of the present embodiment be the 220V alternating current of power distribution network, input two end of the first pressure regulator is connected with the phase line of power supply unit and zero line, to obtain the primary side voltage of 220V respectively; The pressure regulation contact end of the first pressure regulator is connected with one end of IGBT1, by regulating the pressure regulation contact of the first pressure regulator, can set arbitrarily, and can arrange the voltage magnitude before falling is 100V; Input two end of the second pressure regulator is connected with the phase line of power supply unit and zero line, to obtain the primary side voltage of 220V respectively; The pressure regulation contact end of the second pressure regulator is connected with one end of IGBT2, by regulating the pressure regulation contact of the second pressure regulator, can set arbitrarily, fall the voltage dip with short interruptions test needs 50% temporarily according to testing requirements, can arrange the voltage magnitude after falling is 50V; The other end of IGBT1 with IGBT2 is then connected, and is connected with one end of waveform monitoring means respectively; The signal control end of IGBT1 with IGBT2 is connected with control module, and by the conducting Trigger Angle of control module control IGBT1 and IGBT2, voltage initial phase when control voltage is fallen, can simulate the situation of voltage transient at any angle.
The implementation case simulation initial sum drop-off voltage is 30 °, by control module controls IGBT1 and IGBT2 turn-on and turn-off time and number of times, sets and falls time 1min temporarily, fall number of times temporarily 1 time; Before falling, control module control IGBT1 conducting, IGBT2 disconnects, and the voltage of test specimen unit is 100V; After falling, control module control IGBT2 conducting, IGBT1 disconnects, and the voltage of test specimen unit is 50V, and when falling, voltage-phase is 30 °, and the time of falling temporarily maintains 1min; Fall recovery temporarily after 1min, now control module is when voltage phase angle is 30 °, control IGBT1 conducting, and IGBT2 disconnects, and the voltage resume of test specimen unit is 100V.
When waveform monitoring means is used for detection experiment, the amplitude of voltage and phase place, be convenient to carry out observation analysis testing staff to test waveform.
It should be noted that, the pressure regulator in circuit can manually adjust, and also can be designed to motor and automatically adjust; When continuous adjustment by Motor Control, can also analog voltage gradual change phenomenon, just due to the inertia of motor and pressure regulator adjustment portion, it is too fast that the adjustment process of gradual change can not be done.
The undeclared part related in the utility model is same as the prior art or adopt prior art to be realized.
Claims (1)
1. the Voltage Drop tester for intelligent electric meter, it is characterized in that, described tester comprises power supply unit, the first pressure regulator, the second pressure regulator, the first insulated gate bipolar transistor, the second insulated gate bipolar transistor, control module and waveform detecting unit;
Described first pressure regulator is connected power supply unit with the input end of the second pressure regulator; The pressure regulation contact end of described first pressure regulator connects the drain electrode of the first insulated gate bipolar transistor, and the pressure regulation contact end of the second pressure regulator connects the drain electrode of the second insulated gate bipolar transistor; The signal grid control end connection control unit respectively of described first insulated gate bipolar transistor and the second insulated gate bipolar transistor; Common port after described first insulated gate bipolar transistor is connected with the source electrode of the second insulated gate bipolar transistor connects waveform detecting unit and test specimen unit respectively; Described first pressure regulator is connected waveform detecting unit and test specimen unit respectively with the common port of the second pressure regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042839.8U CN205193269U (en) | 2015-12-15 | 2015-12-15 | A voltage drop test appearance for smart electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042839.8U CN205193269U (en) | 2015-12-15 | 2015-12-15 | A voltage drop test appearance for smart electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205193269U true CN205193269U (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521042839.8U Expired - Fee Related CN205193269U (en) | 2015-12-15 | 2015-12-15 | A voltage drop test appearance for smart electric meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205193269U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107396515A (en) * | 2017-07-27 | 2017-11-24 | 北京小米移动软件有限公司 | Means of illumination, apparatus and system |
| CN113311223A (en) * | 2021-06-03 | 2021-08-27 | 上海市计量测试技术研究院 | Voltage drop detector and detection method |
| CN113776766A (en) * | 2021-01-12 | 2021-12-10 | 青岛鼎信通讯股份有限公司 | Voltage drop test device and method for IR46 electric meter calibrating device |
-
2015
- 2015-12-15 CN CN201521042839.8U patent/CN205193269U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107396515A (en) * | 2017-07-27 | 2017-11-24 | 北京小米移动软件有限公司 | Means of illumination, apparatus and system |
| CN107396515B (en) * | 2017-07-27 | 2019-11-08 | 北京小米移动软件有限公司 | Means of illumination, apparatus and system |
| CN113776766A (en) * | 2021-01-12 | 2021-12-10 | 青岛鼎信通讯股份有限公司 | Voltage drop test device and method for IR46 electric meter calibrating device |
| CN113311223A (en) * | 2021-06-03 | 2021-08-27 | 上海市计量测试技术研究院 | Voltage drop detector and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20161215 |