CN2930085Y - Virtual load power source device for electric energy meter - Google Patents
Virtual load power source device for electric energy meter Download PDFInfo
- Publication number
- CN2930085Y CN2930085Y CN 200620111027 CN200620111027U CN2930085Y CN 2930085 Y CN2930085 Y CN 2930085Y CN 200620111027 CN200620111027 CN 200620111027 CN 200620111027 U CN200620111027 U CN 200620111027U CN 2930085 Y CN2930085 Y CN 2930085Y
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- Prior art keywords
- phase
- current
- adjuster
- voltage
- autocoupling type
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- Expired - Lifetime
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- 238000004804 winding Methods 0.000 claims abstract description 14
- 230000010363 phase shift Effects 0.000 claims description 14
- 238000007689 inspection Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Abstract
The utility model relates to a virtual load power supply device used for electric energy metering device which comprises a phase shifting device, a phase shifting switch, a voltage closed loop and a current closed loop. The voltage closed loop comprises a voltage adjusting device and a voltage increasing device. Each phase input end of the voltage adjusting device is connected with the output end of the phase shifting switch. Each phase adjustable end of the voltage adjusting device is correspondingly connected with each phase first level winding. The current closed loop comprises a current phase shifting adjusting device, a current adjusting device and a current increasing device. Each phase input end of the current phase shifting adjusting device is connected with each current control output end. The adjusting end of the current phase shifting adjusting device is connected with the rear end of the current adjusting device. The starting end of the current phase shifting adjusting device is connected with the starting end of each phase of the current adjusting device. The adjusting end of the current adjusting device is connected with one end of each phase first level winding of the current increasing device. The other end thereof is connected with the rear end of each phase of the current adjusting device. The output end of each phase of the phase shifting device is connected with the input end of each phase of the phase shifting switch. The input end of the phase shifting is connected with the commercial power supply network.
Description
One, technical field
The utility model relates to a kind of electrician and measuring supply unit, and especially a kind of electric power teaching, training are demonstrated, detection check, and the virtual load power device that is used for electric power meter of operating current is provided for current loading.
Two, background technology
Electric power meter works the special role of making scale in Utilities Electric Co.'s dealing electric energy, owing to ordering about of economic interests, stealing and transgression for using electricity phenomenon are on the rise.Therefore it is very necessary to carry out regular or irregular inspection for the various metering devices that moving.For strengthening ageing to electric power meter inspection personnel training, promote its technical ability of opposing electricity-stealing, just must in training process, carry out charged inspection to electric power meter.But because of no actual load, electric power meter can not rotate, thereby just can't carry out the real training of contents such as power utility check.
Be not used in the virtual power supply device of electric energy metrical at present, only be useful on the dummy load device of power supply debugging.Existing dummy load mostly is electronic type load or pure electrician's formula.Electronic load is control internal power MOSFET or transistorized conducting amount (duty ratio size), lean on the equipment of the dissipation power consumed power of power tube, it can accurately detect load voltage, accurately adjust load current, simultaneously can realize the fictitious load short circuit, fictitious load is perceptual, resistive and capacitive load, and the time that capacitive load currents rises, the debugging that it generally is used for Switching Power Supply detects.Though electronic load can the regulating load size, and the load (electrical appliance) in the simulation short circuit, overcurrent, dynamic dispatching true environment, it costs an arm and a leg, and overload capacity is poor.And pure electrician's formula since adopt be iron core, coil etc. as main material, thereby product heaviness is used inconvenient.
Three, summary of the invention
It is a kind of simple in structure, easy to use, cheap that the utility model is to provide, the virtual load power device that is used for electric power meter that the output services current range is big, consumed power is little, functional reliability is good.
The utility model adopts such technical scheme: a kind of virtual load power device that is used for electric power meter, it is characterized in that including phase shifter, phase switcher, voltage circuit and current circuit, voltage circuit is made up of autocoupling type three-phase voltage adjuster and three-phase voltage increasing device, each phase input of autocoupling type three-phase voltage adjuster connection triangular in shape is connected with the output of phase switcher, each corresponding connection of mutually elementary winding of each phase scalable end of autocoupling type three-phase voltage adjuster and three-phase voltage increasing device, the output secondary winding of three-phase voltage increasing device is Y-connection output, current circuit is by autocoupling type three-phase current phase shift adjuster, autocoupling type three-phase current adjuster and three-phase current lifting device are formed, each corresponding Current Control output mutually of each phase input and phase shifter of autocoupling type three-phase current phase shift adjuster connects, the scalable end of autocoupling type three-phase current phase shift adjuster is connected with the end of autocoupling type three-phase current adjuster, the top of autocoupling type three-phase current phase shift adjuster connects altogether with the corresponding top mutually of autocoupling type three-phase current adjuster, the scalable end of autocoupling type three-phase current adjuster connects with an end of each corresponding elementary winding mutually of three-phase current lifting device, each corresponding end mutually of the other end and autocoupling type three-phase current adjuster of each mutually elementary winding of three-phase current lifting device connects altogether, each phase voltage output of phase shifter connects with the corresponding input mutually of each of phase switcher, and the input of phase shifter is connected with the mains-supplied net.
The virtual load power device that is used for electric power meter by the utility model provides by autocoupling type three-phase current adjuster, can make the electric current occurrence scope carry out linear regulation at 0-30A; By autocoupling type three-phase current phase shift adjuster, but the fictitious load characteristic: capacitive load, resistive load, pure inductive load, and continuous scalable.Use phase shifter, realize the conversion of fictitious load characteristic; Voltage circuit has been realized the adjustability of output voltage and different voltage output values with autocoupling type three-phase voltage adjuster and three-phase voltage increasing device; Current circuit has been realized the amplitude adjusting of operating current with autocoupling type three-phase current adjuster and three-phase current lifting device; By different wiring compound modes, two kinds of output services voltage systems of phase three-wire three and three-phase and four-line are arranged, can realize the output of high voltage low current or low voltage and high current, reduce the power consumption energy savings.The mode that this device has adopted the electrician to combine with electronics produces adjustable power frequency operating current, offers equipment such as the electric energy meter that needs current drives, D.C mutual-inductor, AC sampling device, relay, electrical instrument.The utility model is simple in structure, easy to use, cheap, and the output services current range is big, consumed power is little, functional reliability good.This device can directly act on current transformer with bigger virtual current, by changing the load character of phase place analog subscriber between electric current, the voltage, by changing high, the base pressure metering device of electric pressure simulation, allows electric energy meter rotate.In the real training of teaching or training, can carry out the training of following associative skills: detect electric power meter with the watt-second method to the student; Appraising and deciding current transformer changes; By fault is set, wiring faults such as simulation broken string, short circuit, phase sequence are not corresponding, and allow the student search; The field-checking electric energy meter; The charged for replacement electric energy meter.
Four, description of drawings
Accompanying drawing is circuit theory diagrams of the present utility model.
Among the figure: 1-phase shifter 2-phase switcher 3-autocoupling type three-phase voltage adjuster 4-three-phase voltage increasing device 5-autocoupling type three-phase current phase shift adjuster I1, I2, I3-autocoupling type three-phase current adjuster Ia, Ib, Ic-three-phase current lifting device
Five, embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings, as shown in the figure, a kind of virtual load power device that is used for electric power meter, include phase shifter 1, phase switcher 2, voltage circuit and current circuit, voltage circuit is made up of autocoupling type three-phase voltage adjuster 3 and three-phase voltage increasing device 4,3 connections triangular in shape of autocoupling type three-phase voltage adjuster, each phase input of autocoupling type three-phase voltage adjuster 3 is connected with the output of phase switcher 2, each corresponding connection of mutually elementary winding of each phase scalable end of autocoupling type three-phase voltage adjuster 3 and three-phase voltage increasing device 4, the output secondary winding of three-phase voltage increasing device 4 is Y-connection output, current circuit is by autocoupling type three-phase current phase shift adjuster 5, autocoupling type three-phase current adjuster I1, I2, I3 and three-phase current lifting device Ia, Ib, Ic forms, each phase input of autocoupling type three-phase current phase shift adjuster 5 connects with phase shifter 1 each corresponding Current Control output mutually, the scalable end of autocoupling type three-phase current phase shift adjuster 5 and autocoupling type three-phase current adjuster I1, I2, the end of I3 connects, the top of autocoupling type three-phase current phase shift adjuster 5 and autocoupling type three-phase current adjuster I1, I2, the top of the corresponding phase of I3 connects altogether, autocoupling type three-phase current adjuster I1, I2, the scalable end of I3 and three-phase current lifting device Ia, Ib, one end of the elementary winding of each corresponding phase of Ic connects, the other end and the autocoupling type three-phase current adjuster I1 of each mutually elementary winding of three-phase current lifting device, I2, the end of each corresponding phase of I3 connects altogether, each phase voltage output of phase shifter 1 connects with the corresponding input mutually of each of phase switcher 2, and the input of phase shifter is connected with the mains-supplied net.
Claims (1)
1, a kind of virtual load power device that is used for electric power meter, it is characterized in that including phase shifter (1), phase switcher (2), voltage circuit and current circuit, voltage circuit is made up of autocoupling type three-phase voltage adjuster (3) and three-phase voltage increasing device (4), autocoupling type three-phase voltage adjuster (3) connection triangular in shape, each phase input of autocoupling type three-phase voltage adjuster (3) is connected with the output of phase switcher (2), each corresponding connection of mutually elementary winding of each phase scalable end of autocoupling type three-phase voltage adjuster (3) and three-phase voltage increasing device (4), the output secondary winding of three-phase voltage increasing device (4) is Y-connection output, current circuit is by autocoupling type three-phase current phase shift adjuster (5), autocoupling type three-phase current adjuster (I1, I2, I3) and three-phase current lifting device (Ia, Ib, Ic) form, each corresponding Current Control output mutually of each phase input of autocoupling type three-phase current phase shift adjuster (5) and phase shifter (1) connects, the scalable end of autocoupling type three-phase current phase shift adjuster (5) and autocoupling type three-phase current adjuster (I1, I2, I3) end connects, the top of autocoupling type three-phase current phase shift adjuster (5) and autocoupling type three-phase current adjuster (I1, I2, I3) top of corresponding phase connects altogether, autocoupling type three-phase current adjuster (I1, I2, I3) scalable end and three-phase current lifting device (Ia, Ib, Ic) end of the elementary winding of each corresponding phase connects, the other end and the autocoupling type three-phase current adjuster (I1 of each mutually elementary winding of three-phase current lifting device, I2, I3) end of each corresponding phase connects altogether, each phase voltage output of phase shifter (1) connects with the corresponding input mutually of each of phase switcher (2), and the input of phase shifter is connected with the mains-supplied net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620111027 CN2930085Y (en) | 2006-07-28 | 2006-07-28 | Virtual load power source device for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620111027 CN2930085Y (en) | 2006-07-28 | 2006-07-28 | Virtual load power source device for electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2930085Y true CN2930085Y (en) | 2007-08-01 |
Family
ID=38308455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620111027 Expired - Lifetime CN2930085Y (en) | 2006-07-28 | 2006-07-28 | Virtual load power source device for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2930085Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515322A (en) * | 2017-10-25 | 2017-12-26 | 国网四川省电力公司电力科学研究院 | A kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error |
| CN110133567A (en) * | 2019-05-10 | 2019-08-16 | 广州供电局有限公司 | Small-power working condition of metering simulator |
| CN112103951A (en) * | 2020-09-07 | 2020-12-18 | 青岛鼎信通讯股份有限公司 | Simulation low-voltage transformer area field power utilization system based on current booster multistage current control |
-
2006
- 2006-07-28 CN CN 200620111027 patent/CN2930085Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515322A (en) * | 2017-10-25 | 2017-12-26 | 国网四川省电力公司电力科学研究院 | A kind of experiment power supply suitable for trichotomy Site Detection power distribution network transformer error |
| CN110133567A (en) * | 2019-05-10 | 2019-08-16 | 广州供电局有限公司 | Small-power working condition of metering simulator |
| CN110133567B (en) * | 2019-05-10 | 2021-08-10 | 广东电网有限责任公司广州供电局 | Low-power metering working condition simulation device |
| CN112103951A (en) * | 2020-09-07 | 2020-12-18 | 青岛鼎信通讯股份有限公司 | Simulation low-voltage transformer area field power utilization system based on current booster multistage current control |
| CN112103951B (en) * | 2020-09-07 | 2024-03-19 | 青岛鼎信通讯股份有限公司 | On-site power utilization system for simulating low-voltage transformer area based on multistage current control of current booster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20130204 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130204 Address after: Jiulongpo Huangjueping Chongqing 400053 Patentee after: Chongqing Power Education & Training Center Patentee after: State Grid Corporation of China Address before: Jiulongpo Huangjueping Chongqing 400053 Patentee before: Chongqing Power Education & Training Center |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070801 |
|
| EXPY | Termination of patent right or utility model |