CN102384996A - Power transformer with high-voltage side power collecting signals - Google Patents
Power transformer with high-voltage side power collecting signals Download PDFInfo
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- CN102384996A CN102384996A CN2011103087751A CN201110308775A CN102384996A CN 102384996 A CN102384996 A CN 102384996A CN 2011103087751 A CN2011103087751 A CN 2011103087751A CN 201110308775 A CN201110308775 A CN 201110308775A CN 102384996 A CN102384996 A CN 102384996A
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Abstract
The invention relates to a power transformer with high-voltage side power collecting signals. The power transformer comprises a three-phase input high-voltage sensors and a current measurement sensor; three high-voltage voltage dividers are respectively connected to the high-voltage input end of the power transformer; three current sensors are respectively accessed to a high-voltage input loop; output signals of the three voltage dividers and output signals of the three current sensors are accessed to an outlet terminal; and the output signals of the three bleeders and the output signals of the three current sensors are connected with voltage and current wiring ends of a three-phase energy meter. Therefore, the electric energy at a high-voltage side is metered.
Description
Technical field:
The present invention relates to have the power transformer of high-pressure side power measurement function, belong to field of electrical equipment, particularly have the power transformer of high-pressure side electric energy acquisition signal.
Background technology:
User's electric energy metrical is divided into a high-pressure side metering and low-pressure side metering dual mode: the metering of existing high-pressure side is to be measured by electric energy meter through primary side voltage and current mutual inductor; The loss of its power transformer counts electric energy meter, can according to the facts collect the loss of power transformer; The low-pressure side metering is that the low pressure output of power transformer supplies the user via electric energy meter metering back, and the loss of power transformer can not count electric energy meter, and power department is then collected the loss of power transformer according to certain ratio.
The energy-saving power transformer has reduced the loss of power transformer, and is great to the electrical network energy-saving significance; If still the power consumer more than 90% is adopted the low-pressure side metering, these users can not get energy-saving power The Energy Conservation of Transformer income, and the enthusiasm of promoting the energy-saving power transformer is had certain influence.
Summary of the invention:
The present invention proposes to have the power transformer of high-pressure side electric energy acquisition signal, and the electric energy acquisition signal of its output is connected with three-phase electric energy meter, can realize the high-pressure side electric energy metrical one time.
Implementation method of the present invention is: this power transformer apparatus has three-phase input high pressure sensor and current metering sensor, and its high pressure sensor is a condenser divider, and current sensor is a current transformer; Three high-voltage bleeders are received the high voltage input terminal of power transformer respectively, and three current sensors insert respectively in the high pressure input circuit, the output signal leading-out wire terminal of the output signal of three road voltage dividers and No. three current sensors; The output signal of three road voltage dividers and the output signal of No. three current sensors are connected with the voltage and current terminals of three-phase electric energy meter, realize the high-pressure side electric energy metrical.
The three-phase high-voltage insulator of the oil-immersed power transformer structure among the present invention is respectively the insulator of built-in voltage divider and current sensor composite structure; The high-voltage arm of built-in voltage divider is the multilayer ganged condenser, and the extension line of the capacitor of its innermost layer is the junction pole of high-tension insulator; Its current transformer is an electromagnetic current transducer, and it is enclosed within the bottom of high-tension insulator.
The three-phase high-voltage outlet supporting insulator of the dry-type power transformer structure among the present invention; Supporting insulator for the built-in capacitance voltage divider arrangement; Its voltage divider is the voltage divider of many capacitances in series structures; The high-pressure side of its capacitive divider is connected with high-voltage connection, and the cold end of its capacitive divider is connected with the upper clamping piece of dry-type power transformer, and its upper clamping piece is connected with the earth potential of power transformer.
Advantage of the present invention: adopt the high-pressure side metering of method realization easily electric energy, can let the user obtain energy-saving power The Energy Conservation of Transformer income, positive effect is arranged to promoting the energy-saving power transformer.
Description of drawings
Fig. 1 is a principle schematic of the present invention;
Fig. 2 is the high-tension insulator diagrammatic cross-section of oil immersed power transformer of the present invention;
Fig. 3 is the supporting insulator diagrammatic cross-section of dry-type power transformer of the present invention;
Fig. 4 is an oil immersed power transformer synoptic diagram of the present invention;
Fig. 5 is a dry-type power transformer synoptic diagram of the present invention;
Among the figure in 1 A, B and C be high voltage input terminal of power transformer three-phase; A, b and c are power transformer three-phase low-voltage outputs; VA, VB and VC are power transformer three-phase high-voltage voltage divider output signals, the 0th, and the ground wire of voltage divider output signal; IA, IB and IC are power transformer threephase current transformer output signals; Voltage output and current output signal connect electric energy meter, just can realize high-voltage electric energy measurement one time.
1 is the insulator junction pole among Fig. 2; The 2nd, the insulation course of coaxial capacitance is represented with fine rule among the figure; The 3rd, the metal level of coaxial capacitance is represented with thick line among the figure; 4, be the metal outer of coaxial capacitance, connect voltage divider lead-out terminal and low-voltage arm electric capacity, the ground of an other termination transformer of low-voltage arm electric capacity; The 5th, the voltage divider lead-out terminal; 6, be current output terminal; 7, be the external insulation of insulator; 8, be low-voltage arm electric capacity; The 9th, current transformer.
10 is busbar fixed screw holes of supports insulative among Fig. 3; The 11st, the external insulation of insulator; The 12nd, voltage divider high-voltage arm electric capacity; 13, be the output signal of voltage divider; 14, be low-voltage arm electric capacity; The 15th, the fixed screw holes of supporting insulator and upper clamping piece.
Embodiment
Accompanying drawing discloses basic structure of the present invention without limitation, and Fig. 4 and Fig. 5 are to be the explanation of example with the triangle transformer device structure, use shown in it, are equally applicable to laminated core transformer and amorphous transformer type.
Fig. 4 is the application examples of the present invention on oil immersed power transformer; It does not change the agent structure of oil immersed power transformer; Only changed existing insulator into the built-in voltage divider among the present invention and the insulator of current sensor, shown among the figure 16,17 is that the section of this insulator is illustrated; Fig. 5 is the application examples of the present invention on dry-type power transformer, and it has changed original supporting insulator among the present invention supporting insulator of built-in voltage divider, and shown among the figure 18,19 is the section signal of this supporting insulator among the figure; 20 is current transformer among the figure, and 21 are the signal of current transformer sectional view.
Claims (3)
1. power transformer with high-pressure side electric energy acquisition signal; Its technical characterictic is: this power transformer apparatus has three-phase input high pressure sensor and current metering sensor; Its high pressure sensor is a condenser divider, and current sensor is a current transformer; Three high-voltage bleeders are received the high voltage input terminal of power transformer respectively; Three current sensors insert respectively in the high pressure input circuit; The output signal leading-out wire terminal of the output signal of three road voltage dividers and No. three current sensors, the output signal of three road voltage dividers is connected with the voltage and current terminals of outside three-phase electric energy meter with the output signal of No. three current sensors.
2. power transformer as claimed in claim 1, its technical characterictic is: the three-phase high-voltage insulator of its oil-immersed power transformer structure is respectively the insulator of built-in voltage divider and current sensor composite structure; The high-voltage arm of built-in voltage divider is the multilayer ganged condenser, and the extension line of the capacitor of its innermost layer is the junction pole of high-tension insulator; Its current transformer is an electromagnetic current transducer, and it is enclosed within the bottom of high-tension insulator.
3. power transformer as claimed in claim 1; Its technical characterictic is: the three-phase high-voltage outlet supporting insulator of its dry-type power transformer structure; Be the supporting insulator of built-in capacitance voltage divider arrangement, its voltage divider is the voltage divider of many capacitances in series structures, and the high-pressure side of its capacitive divider is connected with high-voltage connection; The cold end of its capacitive divider is connected with the upper clamping piece of dry-type power transformer, and its upper clamping piece is connected with the earth potential of power transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103087751A CN102384996A (en) | 2011-10-13 | 2011-10-13 | Power transformer with high-voltage side power collecting signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103087751A CN102384996A (en) | 2011-10-13 | 2011-10-13 | Power transformer with high-voltage side power collecting signals |
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| Publication Number | Publication Date |
|---|---|
| CN102384996A true CN102384996A (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011103087751A Pending CN102384996A (en) | 2011-10-13 | 2011-10-13 | Power transformer with high-voltage side power collecting signals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969499A (en) * | 2013-01-31 | 2014-08-06 | 山东电力集团公司物资供应公司 | Three-phase capacitor voltage division measuring device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6351010A (en) * | 1986-08-20 | 1988-03-04 | 中部電力株式会社 | Insulator for current detection |
| CN2081138U (en) * | 1990-04-04 | 1991-07-17 | 刘福太 | Mini-power transformer with metering mechanism for avoiding fraudulent use of electricity |
| JPH06138150A (en) * | 1992-10-29 | 1994-05-20 | Toshiba Corp | Watt-hour meter equipped with transmitting device |
| JPH0668511B2 (en) * | 1986-08-20 | 1994-08-31 | 中部電力株式会社 | Insulator for voltage detection |
| CN2453521Y (en) * | 2000-12-07 | 2001-10-10 | 南京供电局 | Sleeve insulator with current mutual inductor used for distribution transformer |
| CN2495019Y (en) * | 2001-09-21 | 2002-06-12 | 高玉美 | Transformer against fraudulent use |
| CN101424713A (en) * | 2008-12-05 | 2009-05-06 | 深圳市星龙科技有限公司 | Three-phase four-wire high voltage energy measuring method and device |
| CN202421272U (en) * | 2011-10-13 | 2012-09-05 | 南京苏特电气股份有限公司 | Power transformer with high-voltage side electric energy acquisition signal |
-
2011
- 2011-10-13 CN CN2011103087751A patent/CN102384996A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6351010A (en) * | 1986-08-20 | 1988-03-04 | 中部電力株式会社 | Insulator for current detection |
| JPH0668511B2 (en) * | 1986-08-20 | 1994-08-31 | 中部電力株式会社 | Insulator for voltage detection |
| CN2081138U (en) * | 1990-04-04 | 1991-07-17 | 刘福太 | Mini-power transformer with metering mechanism for avoiding fraudulent use of electricity |
| JPH06138150A (en) * | 1992-10-29 | 1994-05-20 | Toshiba Corp | Watt-hour meter equipped with transmitting device |
| CN2453521Y (en) * | 2000-12-07 | 2001-10-10 | 南京供电局 | Sleeve insulator with current mutual inductor used for distribution transformer |
| CN2495019Y (en) * | 2001-09-21 | 2002-06-12 | 高玉美 | Transformer against fraudulent use |
| CN101424713A (en) * | 2008-12-05 | 2009-05-06 | 深圳市星龙科技有限公司 | Three-phase four-wire high voltage energy measuring method and device |
| CN202421272U (en) * | 2011-10-13 | 2012-09-05 | 南京苏特电气股份有限公司 | Power transformer with high-voltage side electric energy acquisition signal |
Non-Patent Citations (1)
| Title |
|---|
| 余岳辉等: "《脉冲功率器件及其应用》", 30 June 2010, article "电容分压器" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969499A (en) * | 2013-01-31 | 2014-08-06 | 山东电力集团公司物资供应公司 | Three-phase capacitor voltage division measuring device and method |
| CN103969499B (en) * | 2013-01-31 | 2016-08-10 | 山东电力集团公司物资供应公司 | A kind of three phase capacitance partial pressure measuring apparatus and measuring method |
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Application publication date: 20120321 |