CN2136475Y - High- and low-voltage power metering box - Google Patents
High- and low-voltage power metering box Download PDFInfo
- Publication number
- CN2136475Y CN2136475Y CN 92206425 CN92206425U CN2136475Y CN 2136475 Y CN2136475 Y CN 2136475Y CN 92206425 CN92206425 CN 92206425 CN 92206425 U CN92206425 U CN 92206425U CN 2136475 Y CN2136475 Y CN 2136475Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- low
- power transformer
- watt
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a high and low voltage power metering box, which is an auxiliary electric energy metering device and is used by matching with a universal electric energy metering device. The utility model can judge users' electricity stealing behaviors and measure the quantity of stealing electricity. The utility model uses a current mutual inductor to measure the current on high voltage side of a power transformer; the voltage taken out from the low voltage output end of the power transformer, and a 0.4KV universal watt-hour meter form the utility model.
Description
The utility model relates to a kind of auxiliary electric power metering device, and this device and the general supporting use of electric power meter can be judged user's electricity filching behavior, and can measure stealing quantity.
General electric energy gauging method is at present: low-pressure side Current Transformer and watt-hour meter at power transformer measure, and this method makes electricity filching person that many opportunities be arranged, and makes stealing become one of social effects of pollution.On the market some anti-electricity-theft products are arranged now,, owing to, can not carry out the quantity monitoring,, thereby be difficult for large-scale popularization and use for electric administrative department is made troubles to what of stealing though have certain effect.The method of electric energy metrical is carried out in employing in the power transformer high-pressure side, can solve the problem of stealing, but because cost is too high, is difficult to promote the use of, and this method will make a large amount of metering outfits of present use replace and causes huge waste.
The purpose of this utility model provides a kind of cheap and the supporting use of existing electric power meter, the electric power meter that stealing is carried out the quantity monitoring.
The primary coil that the purpose of this utility model is achieved in that the current transformer that three parameters are identical respectively with three high voltage transmission lines polyphones of power transformer, the secondary coil of mutual inductor is received respectively in the corresponding loop of 0.4KV three-phase four-wire system watt-hour meter, takes out three-phase 0.4KV voltage in the low-pressure side of power transformer and receives respectively on the connection terminal of corresponding phase of watt-hour meter.
Owing to adopt such scheme, the utility model with the present general method difference of carrying out electric energy metrical in the power transformer high-pressure side is: saved voltage transformer (VT), thereby cost is reduced greatly, because the utility model is to measure the on high-tension side electric energy of power transformer in essence, thereby the electricity consumption of low-pressure side is gone on record entirely.
Below in conjunction with accompanying drawing the utility model is further specified:
Figure one is an electrical schematic diagram of the present utility model.
Tp is a power transformer among the figure, and A, B, C are its high voltage input terminal, and a, b, c are its 0.4KV low-voltage outputs.L
1, L
2, L
3Be three current transformers that parameter is identical, N is general 0.4KV three-phase four-wire system watt-hour meter.By L
1, L
2, L
3, the high-low pressure electric metering box that provides of N and the supporting composition the utility model of power transformer Tp.M is general user's watt-hour meter among the figure.Electric administrative department is mainly collected the electricity charge according to the reading of M to the user, if the reading of N table and M table is basic identical, illustrates that the user does not have stealing; Otherwise,, illustrate that then the user has electricity filching behavior if the reading of N table substantially exceeds the reading of M table.Its power-steeling quantity is the electric energy difference that two tables are measured, and its precision is in 10%.Under the normal condition, the reading of N table is larger than the reading of M table, and this mainly is because the N table also measures the consume of transformer interior.
The utility model only is applicable to Y/Y
0The power transformer of structure, the following power transformer of the 750KVA of present domestic use all is Y/Y basically
0The type structure.
Because high voltage side current is little, can adopt 5:5,10:5 or 20:5 so high-tension current inductor is elementary with the secondary current ratio.
Claims (1)
- The high-low pressure electric metering box is a kind of auxiliary electric power metering device, it is characterized in that: the primary coil of the current transformer that three parameters are identical respectively with three high voltage transmission lines polyphones of power transformer, the secondary coil of mutual inductor is received respectively in the corresponding loop of 0.4KV three-phase four-wire system watt-hour meter, takes out three-phase 0.4KV voltage in the low-pressure side of power transformer and receives respectively on the connection terminal of corresponding phase of watt-hour meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92206425 CN2136475Y (en) | 1992-04-07 | 1992-04-07 | High- and low-voltage power metering box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92206425 CN2136475Y (en) | 1992-04-07 | 1992-04-07 | High- and low-voltage power metering box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2136475Y true CN2136475Y (en) | 1993-06-16 |
Family
ID=33761986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92206425 Expired - Fee Related CN2136475Y (en) | 1992-04-07 | 1992-04-07 | High- and low-voltage power metering box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2136475Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376897C (en) * | 2005-12-21 | 2008-03-26 | 淄博计保互感器研究所 | High voltage signal sampling method capable of adapting metering measuring or protection requirement |
| CN101968504A (en) * | 2010-09-16 | 2011-02-09 | 浙江永昌仪表有限公司 | Electricity stealing detecting comparison meter, power supply network capable of detecting electricity stealing and electricity stealing detection method |
| CN105652053A (en) * | 2016-03-11 | 2016-06-08 | 国网山东省电力公司商河县供电公司 | Portable electric energy metering and electric shock preventing device |
| CN105914876A (en) * | 2016-04-25 | 2016-08-31 | 邹平县供电公司 | Electricity utilization inspection management system having electricity-stealing prevention function and management method thereof |
| CN108776252A (en) * | 2018-04-12 | 2018-11-09 | 山东钢铁股份有限公司 | The metering secondary current circuit of main transformer |
-
1992
- 1992-04-07 CN CN 92206425 patent/CN2136475Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376897C (en) * | 2005-12-21 | 2008-03-26 | 淄博计保互感器研究所 | High voltage signal sampling method capable of adapting metering measuring or protection requirement |
| CN101968504A (en) * | 2010-09-16 | 2011-02-09 | 浙江永昌仪表有限公司 | Electricity stealing detecting comparison meter, power supply network capable of detecting electricity stealing and electricity stealing detection method |
| CN105652053A (en) * | 2016-03-11 | 2016-06-08 | 国网山东省电力公司商河县供电公司 | Portable electric energy metering and electric shock preventing device |
| CN105652053B (en) * | 2016-03-11 | 2018-09-28 | 国网山东省电力公司商河县供电公司 | Portable electric energy metering, anti-electric shock apparatus |
| CN105914876A (en) * | 2016-04-25 | 2016-08-31 | 邹平县供电公司 | Electricity utilization inspection management system having electricity-stealing prevention function and management method thereof |
| CN108776252A (en) * | 2018-04-12 | 2018-11-09 | 山东钢铁股份有限公司 | The metering secondary current circuit of main transformer |
| CN108776252B (en) * | 2018-04-12 | 2024-05-28 | 山东钢铁股份有限公司 | Metering secondary current loop of main transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101271129B (en) | Sensor type high tension electricity energy gauging method | |
| CN101487859B (en) | High-voltage direct measurement apparatus | |
| CN110865252B (en) | Output electric characteristic simulation device of proton exchange membrane fuel cell and control method thereof | |
| CN2136475Y (en) | High- and low-voltage power metering box | |
| CN2775931Y (en) | Digital circuit working power working at high voltage level | |
| CN101626162B (en) | Electricity management terminal with power factor compensation function | |
| CN201126979Y (en) | UPS system for transformer substation below 220kV voltage class | |
| CN108490248B (en) | Voltage monitoring and protecting device | |
| CN201311452Y (en) | High-voltage direct measurer | |
| CN2786855Y (en) | Three phases power measuring control terminal based on GSM network | |
| CN203204097U (en) | Inverter test platform based on photovoltaic array IV simulator | |
| CN213689810U (en) | Low-voltage testing tool for capacitor inductance plate | |
| CN202002980U (en) | Energy-saving capacitor test table arranged on three-phase electric motor | |
| CN201750047U (en) | Control circuit of 24KV box-type transformer substation | |
| CN211698005U (en) | Output electrical characteristic simulator of proton exchange membrane fuel cell | |
| CN201570797U (en) | High-voltage power supply and low-voltage measuring combined switch cabinet | |
| CN201430446Y (en) | Electricity utilization management terminal with function of power factor compensation | |
| CN201016997Y (en) | Sensor type high-voltage electrical energy meter | |
| CN111443323A (en) | 30000A current transformer field mobile calibration system | |
| CN201004076Y (en) | Power grid voltage detection circuit | |
| CN212543371U (en) | Hybrid electric energy quality optimization device for residential public transformer | |
| CN201307833Y (en) | V/P voltage source device | |
| CN103033662A (en) | Reactive compensation quantization recorder and quantization method thereof | |
| CN201893513U (en) | Miniature high-voltage metering power distribution unit for American box type substation | |
| CN214900206U (en) | Distributed dynamic reactive power compensation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |