CN203849403U - Electric energy meter calibrating device for anechoic chamber - Google Patents
Electric energy meter calibrating device for anechoic chamber Download PDFInfo
- Publication number
- CN203849403U CN203849403U CN201420277524.0U CN201420277524U CN203849403U CN 203849403 U CN203849403 U CN 203849403U CN 201420277524 U CN201420277524 U CN 201420277524U CN 203849403 U CN203849403 U CN 203849403U
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- anechoic chamber
- active filter
- meter calibrating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000463 material Substances 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 19
- 238000001914 filtration Methods 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000008676 import Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Abstract
The utility model discloses an electric energy meter calibrating device for an anechoic chamber. The electric energy meter calibrating device comprises an electric energy meter calibrating device body. The electric energy meter calibrating device body comprises a standard source and is characterized in that the output end of the standard source is connected in parallel with a reactor and is connected with a first active filter; the first active filter is connected with a second active filter; the second active filter is connected with an electric energy meter to be detected; and the first active filter and the second active filter are all arranged in the anechoic chamber. In an anechoic chamber experiment of the electric energy meter, matching compensation is performed on voltage boosting phenomena, caused by a series power active filter installed at the power inlet of the anechoic chamber, at various load inlets. Further, matching compensation of commonly-used electric energy meters is facilitated.
Description
Technical field
The utility model relates to a kind of electric energy meter calibrating apparatus for anechoic chamber.
Background technology
At intelligent grid construction field, propelling along with intelligent power network, intelligent meter just progressively replaces traditional table meter, if the Electro Magnetic Compatibility of intelligent meter is poor, will bring the serious consequences such as malfunction, tripping, metering be inaccurate, directly threaten the safety and reliability of Operation of Electric Systems.For this reason, introduced the electromagnetic compatibility laboratory that the Electro Magnetic Compatibility of intelligent meter is detected.
Wherein, anechoic chamber,, for simulating the test condition of open area, electromagnetic interference (EMI) and the electromagnetic susceptibility characteristic of test intelligent meter, is the basic configuration in the electromagnetic compatibility laboratory of intelligent meter.In anechoic chamber,, in order to reduce the impact of supply harmonic on all kinds of loads (as testing apparatus, equipment under test, utility appliance etc.), improve test accuracy, generally at the power import place of anechoic chamber,, Series Active Power Filter is installed.But in experimentation, find, use Series Active Power Filter, can cause that the voltage of all kinds of loads porch raises, cause measuring error larger, the poor reliability of measurement result.
Utility model content
For the problems referred to above, the utility model provides a kind of electric energy meter calibrating apparatus for anechoic chamber,, in the anechoic chamber, laboratory of electric energy meter, the voltage rising phenomenon of the caused all kinds of loads of the Series Active Power Filter porch that the power import place at anechoic chamber, is installed is mated compensation, further, conveniently conventional electric energy meter is mated to compensation.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of electric energy meter calibrating apparatus for anechoic chamber,, comprise electric energy meter calibrating apparatus body, described electric energy meter calibrating apparatus body comprises standard source, it is characterized in that, the output terminal of described standard source is parallel with a reactor, and the output terminal of described standard source is connected with the first active filter, and described the first active filter is connected with the second active filter, described the second active filter is connected with electric energy meter to be measured, and described the first active filter and the second active filter are all positioned at anechoic chamber.
Be connected in parallel on the reactor of standard source output terminal for the change in voltage of secondary series type Active Power Filter-APF is compensated, adjust the output source of whole device, guarantee that final output is applied in the scope of the can be controlled in ± 0.3V of voltage on electric energy meter to be measured, the voltage rising phenomenon of the caused all kinds of loads of the Series Active Power Filter porch that the power import place at anechoic chamber, is installed is mated compensation, meets test request.Standard source output terminal is connected to the input end of two-stage active filter, and device filtering accesses powering up on test loop of electric energy meter to be measured after processing after filtering, for test.
Wherein, preferably reactor is reactor with T-shaped core, in addition, its corresponding reactor numerical value of the electric energy meter of different size is not identical yet, the test voltage of conventional electric energy meter is respectively: 57.7V, 100 V, 220V and 380V, therefore can on reactor with T-shaped core, be provided with at least two different exits, each exit is connected with the output terminal of standard source by relay, conveniently conventional electric energy meter is mated to compensation.
The beneficial effects of the utility model are: in the anechoic chamber, laboratory of electric energy meter, the voltage rising phenomenon of the caused all kinds of loads of the Series Active Power Filter porch that the power import place at anechoic chamber, is installed is mated compensation, further, conveniently conventional electric energy meter is mated to compensation.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of electric energy meter calibrating apparatus for anechoic chamber, of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical solutions of the utility model are described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, a kind of electric energy meter calibrating apparatus for anechoic chamber,, in figure shown in dotted portion, comprise electric energy meter calibrating apparatus body, it should be noted that, succinct for picture, in Fig. 1, only show and the closely-related parts of the utility model, be positioned at the standard source of electric energy meter calibrating apparatus body interior, the miscellaneous part of electric energy meter calibrating apparatus body is also not shown, this belongs to prior art, does not repeat them here.
The output terminal of described standard source is parallel with a reactor, during energising, will produce magnetic field in its occupied certain space scope, preferably reactor is reactor with T-shaped core, its material is silicon steel material, can be used for suppressing 10KHz and above high frequency interference, can not affect the filtering performance of series connection type active electric power filter, it is the important support equipment of power system reactive power compensation device, can effectively suppress higher hamonic wave, restriction inrush phenomenon and switching overvoltage, the voltage waveform of improvement system, improve power factor, the safe operation of power capacitor and other power equipments is played to larger effect.
The output terminal of described standard source is connected with the first active filter, described the first active filter is connected with the second active filter, for test environment is not subject to extraneous interference, guarantee the clean of environment, at electric energy meter energising test loop to be measured, add active filter, harmonic wave is suppressed, employing be the active filter of two-stage series connection.During test, the first active filter and the second active filter are placed in anechoic chamber,, then electric energy meter to be measured are connected on the second active filter.Be connected in parallel on the reactor of standard source output terminal for the change in voltage of secondary series type Active Power Filter-APF is compensated, adjust the output source of whole device, guarantee that final output is applied in the scope of the can be controlled in ± 0.3V of change in voltage scope on electric energy meter to be measured, the voltage rising phenomenon of the caused all kinds of loads of the Series Active Power Filter porch that the power import place at anechoic chamber, is installed is mated compensation, meets test request.Standard source output terminal US is connected to the input end of two-stage active filter, and device filtering accesses powering up on test loop of electric energy meter to be measured after processing after filtering, for test.
The two-stage active filter of serial connection can cause voltage rising phenomenon, has increased reactive loss simultaneously, causes electric energy meter test error large.At standard source output terminal reactor with T-shaped core in parallel, the voltage rising phenomenon that harmonic suppression circuit is caused compensates.Because reactor with T-shaped core itself has advantages of, reactor with T-shaped core in parallel can guarantee the safe operation of miscellaneous equipment in anechoic chamber, laboratory, compensate the change in voltage of all kinds of loads porch, improve power factor, guarantee reliability and accuracy that EMC detects.
In addition, its corresponding reactor numerical value of the electric energy meter of different size is not identical yet, therefore preferably on reactor with T-shaped core, is provided with at least two different exits, and each exit is connected with the output terminal of standard source by relay.
The test voltage of conventional electric energy meter is respectively: 57.7V, 100 V, 220V and 380V, can be for the parameter of the secondary series type active filter of anechoic chamber, internal configurations, when being 57.7V, 100 V, 220V and 380V, tests voltage respectively, according to the Data Matching of test, go out the reactor parameter of different electric pressures, calculating need be parallel to the parameter value of the reactor with T-shaped core of standard source output point, and the reactor with T-shaped core with relevant parameter value is parallel on standard source output terminal.As shown in Figure 1, be provided with four different exits on reactor with T-shaped core, four exits are corresponding four voltage specification: 57.7V, 100 V, 220V and the 380V of electric energy meter to be measured respectively.Each exit is connected with standard source output terminal with J4 by relay J 1, J2, J3 respectively.By relay J 1, J2, J3 or J4, adjust the parameter of reactor with T-shaped core, automatically switch adjustment.
Further, the stem stem of preferred dry iron core reactor is evenly provided with several air gaps, between adjacent air gap, is provided with laminated epoxy glass-cloth board.The magnetic hysteresis that can effectively suppress siliconized plate is flexible, effectively reduces noise, and Reliable guarantee reactor air gap does not change in operational process, and after long-time running, inductance can not be offset.In addition, the folder of reactor with T-shaped core, securing member etc. preferably adopt nonmagnetic substance, and do dead ground and insulation processing, can effectively reduce the added losses of leakage field, eddy current generation, the first-harmonic quality factor of reactor are not less than 100, have guaranteed good filtering characteristic and electromagnetic property.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (6)
1. the electric energy meter calibrating apparatus for anechoic chamber,, comprise electric energy meter calibrating apparatus body, described electric energy meter calibrating apparatus body comprises standard source, it is characterized in that, the output terminal of described standard source is parallel with a reactor, the output terminal of described standard source is connected with the first active filter, described the first active filter is connected with the second active filter, described the second active filter is connected with electric energy meter to be measured, and described the first active filter and the second active filter are all positioned at anechoic chamber.
2. a kind of electric energy meter calibrating apparatus for anechoic chamber, according to claim 1, is characterized in that, described reactor is reactor with T-shaped core.
3. a kind of electric energy meter calibrating apparatus for anechoic chamber, according to claim 2, is characterized in that, is provided with at least two different exits on described reactor with T-shaped core, and each exit is connected with the output terminal of standard source by relay.
4. a kind of electric energy meter calibrating apparatus for anechoic chamber, according to claim 3, it is characterized in that, on described reactor with T-shaped core, be provided with four different exits, four exits are corresponding four voltage specification: 57.7V, 100 V, 220V and the 380V of electric energy meter to be measured respectively.
5. a kind of electric energy meter calibrating apparatus for anechoic chamber, according to claim 2, is characterized in that, described reactor with T-shaped core is silicon steel material.
6. a kind of electric energy meter calibrating apparatus for anechoic chamber, according to claim 5, is characterized in that, the stem stem of described reactor with T-shaped core is evenly provided with several air gaps, between adjacent air gap, is provided with laminated epoxy glass-cloth board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277524.0U CN203849403U (en) | 2014-05-28 | 2014-05-28 | Electric energy meter calibrating device for anechoic chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277524.0U CN203849403U (en) | 2014-05-28 | 2014-05-28 | Electric energy meter calibrating device for anechoic chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849403U true CN203849403U (en) | 2014-09-24 |
Family
ID=51562403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420277524.0U Active CN203849403U (en) | 2014-05-28 | 2014-05-28 | Electric energy meter calibrating device for anechoic chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203849403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995247A (en) * | 2014-05-28 | 2014-08-20 | 国家电网公司 | Electric energy meter calibrating apparatus for anechoic chamber |
| CN114002643A (en) * | 2021-11-25 | 2022-02-01 | 国网北京市电力公司 | Electric energy meter detection method and device, electronic equipment and computer readable storage medium |
-
2014
- 2014-05-28 CN CN201420277524.0U patent/CN203849403U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995247A (en) * | 2014-05-28 | 2014-08-20 | 国家电网公司 | Electric energy meter calibrating apparatus for anechoic chamber |
| CN114002643A (en) * | 2021-11-25 | 2022-02-01 | 国网北京市电力公司 | Electric energy meter detection method and device, electronic equipment and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103487780B (en) | A kind of GIS electronic transformer test macro and method thereof | |
| CN103487679B (en) | A kind of AIS electric mutual inductor test macro and method thereof | |
| CN105182126B (en) | Improved distribution transformer energy efficiency metering detection method | |
| CN102269787A (en) | Detection method of harmonic characteristic of electronic voltage transformer and detection device thereof | |
| Schöttke et al. | Transfer characteristic of a MV/LV transformer in the frequency range between 2 kHz and 150 kHz | |
| CN102788902B (en) | High-voltage transmission line power frequency parameter actual measuring device capable of resisting against high-induced voltage interference | |
| CN203849403U (en) | Electric energy meter calibrating device for anechoic chamber | |
| CN109444528A (en) | A kind of Transformer Condition Monitoring System and method based on iron core grounding current | |
| CN104198843A (en) | Power grid impedance frequency property testing method and device | |
| CN204214972U (en) | A kind of magnet controlled reactor on-line monitoring system | |
| CN203502582U (en) | GIS electronic transformer test system based on disconnecting switch switching-on and switching-off capacitive small current | |
| CN105277913B (en) | A kind of test method of capacitance type potential transformer | |
| CN203502581U (en) | AIS electronic transformer test system based on disconnecting switch switching-on and switching-off capacitive small current | |
| CN205176195U (en) | Insulating status monitoring device of cable jacket | |
| CN203025253U (en) | Capacitive equipment dielectric loss energized testing device | |
| CN103995247A (en) | Electric energy meter calibrating apparatus for anechoic chamber | |
| CN203368032U (en) | Harmonic suppression circuit in electromagnetic compatibility laboratory | |
| CN202351421U (en) | Error detection device for current transformer | |
| CN204044261U (en) | A kind of electrical network resistance characteristic test device frequently | |
| CN103401244B (en) | Harmonic suppression circuit for electromagnetic compatibility laboratory and compensation method thereof | |
| CN202119847U (en) | Detection device of harmonic characteristic of electronic voltage transformer | |
| CN203811755U (en) | A testing apparatus used for a triple-frequency withstand voltage test for a voltage transformer | |
| CN204188724U (en) | A kind of on-line measurement device of electric power system surge protector insulation resistance | |
| CN203950029U (en) | The integrated calibration equipment of a kind of novel single three-phase electric energy meter | |
| CN207851122U (en) | A kind of active electric magnetic screen generating means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |