CN101571553B - Minitype high-voltage electric energy meter directly arranged in 10KV power supply circuit - Google Patents
Minitype high-voltage electric energy meter directly arranged in 10KV power supply circuit Download PDFInfo
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- CN101571553B CN101571553B CN2009100159676A CN200910015967A CN101571553B CN 101571553 B CN101571553 B CN 101571553B CN 2009100159676 A CN2009100159676 A CN 2009100159676A CN 200910015967 A CN200910015967 A CN 200910015967A CN 101571553 B CN101571553 B CN 101571553B
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Abstract
The invention discloses a minitype high-voltage electric energy meter directly arranged in a 10KV power supply circuit. The electric energy meter comprises a silicon rubber dry-type composite bushing (1), a box body (2), an electric energy metering unit (3), a high-voltage post head (4), an amorphous material current mutual inductor (5) and an isolation transformation circuit board (6), and is characterized in that the high-voltage post head (4) is inserted into the inside of the top end of the silicon rubber dry-type composite bushing (1); the amorphous material current mutual inductor (5) isarranged on the inner top of a cavity of the silicon rubber dry-type composite bushing (1), while the isolation transformation circuit board (6) and a capacitor voltage-reduction power supply circuitboard (8) are arranged from the middle part to the lower part inside the cavity of the composite bushing (1); and the isolation transformation circuit board (6) and the capacitor voltage-reduction power supply circuit board (8) are respectively connected with the inner end of the high-voltage post head (4) through corresponding conducting wires (9). The high-voltage electric energy meter has simple and compact structure, convenient installation and high efficiency, and can improve metering precision.
Description
Technical field
The present invention relates to a kind of high pressure electricity consumption measuring apparatus, particularly a kind of minitype high-voltage electric energy meter of directly being satisfied with in the 10KV supply line is applicable to 10KV and following high voltage supply circuit thereof.
Background technology
Along with electric system develops and national energy-saving and cost-reducing requirement towards high voltage, jumbo direction, it is particularly important that the problem of electricity consumption accurate measurement seems, have only by accurate electricity consumption continuous data as foundation, just might strengthen the management of consumer, reach energy saving purposes.High-voltage electric energy meter is the important component part of power distribution network on-line monitoring and metering, and it can carry out accurate measurement and on-line monitoring to separate unit or many transformers of each branch road user in the power distribution network.At present, the employed metering method in electricity consumption metering aspect for 10kV and following high voltage supply circuit and consumer all is common high-voltage metering cubicle mode, its structure comprises the metering cabinet housing, voltage transformer (VT), current transformer, silicon rubber dry type composite bushing and high-voltage electric energy meter etc. are partly formed, voltage transformer (VT) wherein is except that being the high-voltage electric energy meter input voltage sampled signal, also supply with low-tension supply for consumer, because voltage transformer (VT) comprises transformer, realize step-down by transformer, and volume of transformer is big, so caused the entire equipment volume big, the equipment heaviness.Simultaneously, on the overall precision grade, also be subjected to certain influence.In order to change above shortcoming, the applicant had once succeeded in developing " 6/10KV direct press type energy-saving and high-pressure batch meter ", and applied for patent on Dec 14th, 2007, the patent No. is 200720158542.7, its structure comprises silicon rubber dry type composite bushing, casing, transformer, Switching Power Supply, the electric energy metrical unit, the amorphous material current transformer, isolating the conversion line plate constitutes, inside at silicon rubber dry type composite bushing penetrates high tension terminal vertically, the center pit of amorphous material current transformer is enclosed within on the inner high tension terminal of silicon rubber dry type composite bushing, the signal that mutual inductance goes out is passed on the electric energy metrical unit, in casing, install and isolate the conversion line plate, isolating the conversion line plate is connected with high tension terminal by the voltage signal transmission line, high voltage signal becomes weak signal by isolation conversion line plate and is connected on the electric energy metrical unit, and the power devices power supply adopts a mutual inductor to obtain from hi-line.Advantage that should " 6/10KV direct press type energy-saving and high-pressure batch meter " is: owing to adopted the less amorphous material current transformer of volume, so that overall volume has obtained certain reducing, simplify the structure, can easily on high-tension line, install; Simultaneously,, no longer adopt voltage transformer (VT), reduced certain device weight because the resistance-type linear unit is adopted in the sampling of voltage signal.But still there is certain deficiency in " 6/10KV direct press type energy-saving and high-pressure batch meter ", main deficiency is: owing to still adopted voltage transformer (VT) in its structure is power devices, caused the volume of entire equipment still bigger, and, because the existence of voltage transformer (VT) causes its measuring voltage can not accomplish wide-voltage range.Owing to still have a conventional secondary voltage, so also be subjected to certain restriction on its theftproof performance.
Summary of the invention
The object of the present invention is to provide a kind of conventional current transformer of amorphous material current transformer cancellation that not only adopts, cancelled conventional voltage transformer (VT), the power supply of equipment also no longer relies on voltage transformer (VT) simultaneously, make that its structure is simple more, volume is littler, weight is lighter, easier for installation, integrated degree more increases, and is specially adapted to a kind of minitype high-voltage electric energy meter of directly being satisfied with in the 10KV supply line of 10kV and following high-tension line and consumer electricity consumption monitoring, metering.
For reaching above purpose, the technical solution adopted in the present invention is: this a kind of minitype high-voltage electric energy meter of directly being satisfied with in the 10KV supply line, comprise silicon rubber dry type composite bushing, casing, the electric energy metrical unit, high tension terminal, amorphous material current transformer and isolation conversion line plate constitute, silicon rubber dry type composite bushing is fixed on the upper wall of casing, the electric energy metrical unit is fixedly mounted in the casing, it is characterized in that high tension terminal is installed in the top ends of silicon rubber dry type composite bushing, and insert upper end in the chamber of silicon rubber dry type composite bushing along the axis of silicon rubber dry type composite bushing, the amorphous material current transformer is installed in the top in the silicon rubber dry type composite bushing chamber, and the seat that is enclosed within high tension terminal is held, on the top sidewall of silicon rubber dry type composite bushing, be provided with the side joint terminal, the triple-phase line of hi-line is inlet wire from the high tension terminal at three silicon rubber dry type composite bushing tops respectively, outlet from the side joint terminal, convenient whole table apparatus is connected in series into circuit, isolation conversion line plate is installed in a side of middle part to the bottom in the silicon rubber dry type composite bushing chamber, isolate the conversion line plate and be connected with the electric energy metrical unit, the signal that converts is received on the electric energy metrical unit by lead; The opposite side of middle part to the bottom in silicon rubber dry type composite bushing chamber is installed the capacitor step-down power supply circuit board, as the power supply of equipment, isolate the conversion line plate and be connected with the inner of high tension terminal by corresponding lead respectively with the capacitor step-down power supply circuit board.
The present invention also implements by following measure: be provided with insulcrete between isolation conversion line plate and capacitor step-down power supply circuit board and amorphous material current transformer, be provided with the through hole of lead on insulcrete.
Described amorphous material current transformer comprises coil, formation unshakable in one's determination, and iron core is made for iron cobalt amorphous material, and its linearity is high, the big current signal of circuit can be converted to the weak current signal of mA level.
The circuit component of described isolation conversion line plate, comprise that divider resistance and precision current mutual inductor connect and compose, adopt light, electromagnetic isolation technology high voltage signal to be converted to the low current signal of measuring required mA level, sample via the synchronous A/D sample circuit in the electric energy metrical unit, sampled data is passed to the host CPU in the electric energy metrical unit, after the host CPU Treatment Analysis in the electric energy metrical unit, obtain real-time circuit operational factor and accumulative total electric flux, obtain voltage signal simultaneously.
The circuit component of described capacitor step-down power supply circuit board, comprise higfh-tension ceramics column electric capacity, voltage dependent resistor (VDR), isolating transformer and power panel constitute, higfh-tension ceramics column electric capacity is connected to the voltage dependent resistor (VDR) of series connection and the primary coil of isolating transformer when connecing hi-line, the secondary coil of isolating transformer connects power panel respectively, also be provided with safety protective circuit on the power panel, the power supply stabilizing circuit, the power ascension circuit, the high-tension electricity of 10000V is by higfh-tension ceramics column capacitance decompression, after electrical quantity matches, the voltage that is added on the isolating transformer primary coil is 1000V, through the safety protective circuit on isolating transformer and the power panel, the power supply stabilizing circuit, the power ascension circuit obtains the consumer working power; Described isolation conversion line plate is converted to high voltage the weak electric signal that can discern the electric energy metrical unit required argument as electric energy metrical.
Described amorphous material current transformer, isolation conversion line plate and capacitor step-down power supply circuit board are established three groups respectively, in the chamber that every group is installed in a silicon rubber dry type composite bushing, make it simple in structure, compact, insulating resin in the equal can in the chamber of three silicon rubber dry type composite bushings and in the chamber of casing, casing is provided with display window, can clearly observe the data presentation of electric energy metrical unit, as open in the chamber of three silicon rubber dry type composite bushings, complete machine is damaged, have anti-theft feature.
Holder is established in bottom at casing, establishes bolt hole on holder, during use, with set bolt pass bolt hole be installed on the electric pole or the cross-arm of electric pole on.
This working power of directly being satisfied with the minitype high-voltage electric energy meter in the 10KV supply line is directly obtained by high-tension line, by measures such as the capacitance decompression on the capacitor step-down power supply circuit board and insulation, isolated variables, obtains the working power of consumer.
Beneficial effect of the present invention is: compare with the high-voltage electric energy meter of present use: 1, owing to both adopted the less amorphous material current transformer of volume, also adopted volume smaller capacitive buck power supply circuit board, and be installed in the chamber of silicon rubber dry type composite bushing, the institute so that overall volume obtained farthest reducing, simplify the structure, install and use convenient.2, because inside becomes an integral body with the related part of primary side with the high-strength insulating material can, do not have the secondary circuit on the conventional meaning, can prevent the inner stealing of slave unit fully.3, owing to adopt the design of no-voltage mutual inductor, the resistance-type linear unit is adopted in the sampling of voltage signal, its measuring voltage wide ranges can satisfy accuracy requirement in 1kV～10kV voltage range, be tolerance (wide voltage, wide electric current) measuring apparatus truly.4, obtaining of power supply by the capacitance decompression mode, volume is little, and the efficient height is independent of each other with metering signal, can improve measuring accuracy.
Description of drawings
Fig. 1 is a structure front-view schematic diagram of the present invention.
Fig. 2 is a structure schematic side view of the present invention.
Fig. 3 analyses and observe enlarged diagram for the present invention along Fig. 2 A-A.
Fig. 4 overlooks enlarged diagram for the present invention isolates conversion line plate circuit.
Fig. 5 is a capacitor step-down power supply circuit board circuit theory enlarged diagram of the present invention.
Fig. 6 is electric energy metrical of the present invention unit, capacitor step-down power supply circuit board connection principle synoptic diagram.
Embodiment
Embodiment
Make the present invention with reference to accompanying drawing 1,2,3,4,5,6.This a kind of minitype high-voltage electric energy meter of directly being satisfied with in the 10KV supply line, comprise silicon rubber dry type composite bushing 1, casing 2, electric energy metrical unit 3, high tension terminal 4, amorphous material current transformer 5 and isolation conversion line plate 6 constitute, silicon rubber dry type composite bushing 1 is fixed on the upper wall of casing 2, electric energy metrical unit 3 is fixedly mounted in the casing 2, it is characterized in that high tension terminal 4 is installed in the top ends of silicon rubber dry type composite bushing 1, and insert upper end in the chamber of silicon rubber dry type composite bushing 1 along the axis of silicon rubber dry type composite bushing 1, amorphous material current transformer 5 is installed in the top in silicon rubber dry type composite bushing 1 chamber, and the seat that is enclosed within high tension terminal 4 is held, on the top sidewall of silicon rubber dry type composite bushing 1, be provided with side joint terminal 7, the triple-phase line of hi-line is inlet wire from the high tension terminal 4 at three silicon rubber dry type composite bushing 1 tops respectively, outlet from the side joint terminal 7, can conveniently put in order table apparatus is connected in series into circuit, isolation conversion line plate 6 is installed in a side of middle part to the bottom in silicon rubber dry type composite bushing 1 chamber, isolate conversion line plate 6 and be connected with electric energy metrical unit 3, the signal that converts is received on the electric energy metrical unit 3 by lead; The opposite side of middle part to the bottom in silicon rubber dry type composite bushing 1 chamber is installed capacitor step-down power supply circuit board 8, as the power supply of equipment, isolate conversion line plate 6 and be connected with the inner of high tension terminal 4 by corresponding lead 9 respectively with capacitor step-down power supply circuit board 8.
Between isolation conversion line plate 6 and capacitor step-down power supply circuit board 8 and amorphous material current transformer 5, be provided with insulcrete 10, on insulcrete 10, be provided with the through hole of lead 9.
Described amorphous material current transformer 5 comprises that coil, iron core constitute, and iron core is that iron Cobalt base amorphous material is made, and its linearity is high, the big current signal of circuit can be converted to the weak current signal of mA level.
Described isolation conversion line plate 6, comprise that divider resistance 6a summation current transformer 6b connects and composes, adopt light, electromagnetic isolation technology high voltage signal to be converted to the low current signal of measuring required mA level, sample via the synchronous A/D sample circuit in the electric energy metrical unit 3, sampled data is passed to the host CPU in the electric energy metrical unit 3, after the host CPU Treatment Analysis in the electric energy metrical unit 3, obtains real-time circuit operational factor and accumulative total electric flux, obtain voltage signal simultaneously
The circuit component of described capacitor step-down power supply circuit board 8, comprise higfh-tension ceramics column capacitor C 1, C2, C3, voltage dependent resistor (VDR) R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, isolating transformer T1, T2, T3 and power panel 13 constitute, and higfh-tension ceramics column capacitor C 1 is connected to the primary coil of voltage dependent resistor (VDR) R4, R5, R6, R7 and the isolating transformer T1 of series connection when connecing hi-line A phase line; Higfh-tension ceramics column capacitor C 2 is connected to the primary coil of voltage dependent resistor (VDR) R8, R9, R10, R11 and the isolating transformer T2 of series connection when connecing hi-line B phase line; Higfh-tension ceramics column capacitor C 3 is connected to the primary coil of voltage dependent resistor (VDR) R12, R13, R14, R15 and the isolating transformer T3 of series connection when connecing hi-line C phase line; Isolating transformer T1, T2, the secondary coil of T3 connects power panel 13 respectively, voltage dependent resistor (VDR) R4, R5, R6, the R7 series connection, voltage dependent resistor (VDR) R8, R9, R10, the R11 series connection, voltage dependent resistor (VDR) R12, R13, R14, the R15 series connection, three groups of series connection backs are in parallel, also be provided with safety protective circuit on the power panel 13, the power supply stabilizing circuit, the power ascension circuit, the high-tension electricity of 10000V is by higfh-tension ceramics column capacitor C 1, C2, the C3 step-down, after circuit parameter matches, be added in isolating transformer T1, T2, voltage on the T3 primary coil is 1000V, through isolating transformer T1, T2, safety protective circuit on T3 and the power panel 13, the power supply stabilizing circuit, the power ascension circuit obtains the consumer working power; Described isolation conversion line plate 6 is converted to the weak electric signal that electric energy metrical unit 3 can be discerned with high voltage, as the essential parameter of electric energy metrical.
Described amorphous material current transformer 5, isolation conversion line plate 6 and capacitor step-down power supply circuit board 8 are established three groups respectively, in the chamber that every group is installed in a silicon rubber dry type composite bushing 1, insulating resin in the equal can in the chamber of three silicon rubber dry type composite bushings 1 and in the chamber of casing 2, casing 2 is provided with display window, can clearly observe the data presentation of electric energy metrical unit 3, as open in the chamber of three silicon rubber dry type composite bushings 1, complete machine is damaged, have anti-theft feature.
This working power of directly being satisfied with the minitype high-voltage electric energy meter in the 10KV supply line is directly obtained by high-tension line, and measure such as capacitance decompression by capacitor step-down power supply circuit board 8 and insulation, isolated variable obtains the working power of consumer.
Claims (3)
1. minitype high-voltage electric energy meter of directly being satisfied with in the 10KV supply line, comprise silicon rubber dry type composite bushing (1), casing (2), electric energy metrical unit (3), high tension terminal (4), amorphous material current transformer (5) and isolation conversion line plate (6) constitute, silicon rubber dry type composite bushing (1) is fixed on the upper wall of casing (2), electric energy metrical unit (3) is fixedly mounted in the casing (2), it is characterized in that high tension terminal (4) is installed in the top ends of silicon rubber dry type composite bushing (1), and insert in the chamber of silicon rubber dry type composite bushing (1) along the axis of silicon rubber dry type composite bushing (1) on, amorphous material current transformer (5) is installed in the top in silicon rubber dry type composite bushing (1) chamber, and the seat that is enclosed within high tension terminal (4) is held, on the top sidewall of silicon rubber dry type composite bushing (1), be provided with side joint terminal (7), isolation conversion line plate (6) is installed in a side of middle part to the bottom in silicon rubber dry type composite bushing (1) chamber, isolates conversion line plate (6) and is connected with electric energy metrical unit (3) by lead; The opposite side of middle part to the bottom in silicon rubber dry type composite bushing (1) chamber is installed capacitor step-down power supply circuit board (8), isolates conversion line plate (6) and is connected by corresponding lead (9) the inner with high tension terminal (4) respectively with capacitor step-down power supply circuit board (8);
Between isolation conversion line plate (6) and capacitor step-down power supply circuit board (8) and amorphous material current transformer (5), be provided with insulcrete (10), on insulcrete (10), be provided with the through hole of lead (9);
The circuit component of described capacitor step-down power supply circuit board (8), comprise higfh-tension ceramics column capacitor C 1, C2, C3, voltage dependent resistor (VDR) R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, isolating transformer T1, T2, T3 and power panel (13) constitute, and higfh-tension ceramics column capacitor C 1 is connected to the primary coil of voltage dependent resistor (VDR) R4, R5, R6, R7 and the isolating transformer T1 of series connection when connecing hi-line A phase line; Higfh-tension ceramics column capacitor C 2 is connected to the primary coil of voltage dependent resistor (VDR) R8, R9, R10, R11 and the isolating transformer T2 of series connection when connecing hi-line B phase line; Higfh-tension ceramics column capacitor C 3 is connected to the primary coil of voltage dependent resistor (VDR) R12, R13, R14, R15 and the isolating transformer T3 of series connection when connecing hi-line C phase line; The secondary coil of isolating transformer T1, T2, T3 connects power panel (13) respectively, voltage dependent resistor (VDR) R4, R5, R6, R7 series connection, and voltage dependent resistor (VDR) R8, R9, R10, R11 series connection, voltage dependent resistor (VDR) R12, R13, R14, R15 series connection, three groups of series connection backs are in parallel.
2. the minitype high-voltage electric energy meter of directly being satisfied with in the 10KV supply line according to claim 1, it is characterized in that described amorphous material current transformer (5), isolate conversion line plate (6) and capacitor step-down power supply circuit board (8) is established three groups respectively, in the chamber that every group is installed in a silicon rubber dry type composite bushing (1).
3. the minitype high-voltage electric energy meter of directly being satisfied with in the 10KV supply line according to claim 1 is characterized in that establishing holder (11) in the bottom of casing (2), establishes bolt hole (12) on holder (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100159676A CN101571553B (en) | 2009-06-09 | 2009-06-09 | Minitype high-voltage electric energy meter directly arranged in 10KV power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100159676A CN101571553B (en) | 2009-06-09 | 2009-06-09 | Minitype high-voltage electric energy meter directly arranged in 10KV power supply circuit |
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| Publication Number | Publication Date |
|---|---|
| CN101571553A CN101571553A (en) | 2009-11-04 |
| CN101571553B true CN101571553B (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100159676A Expired - Fee Related CN101571553B (en) | 2009-06-09 | 2009-06-09 | Minitype high-voltage electric energy meter directly arranged in 10KV power supply circuit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630725B (en) * | 2013-07-30 | 2016-03-23 | 南车青岛四方机车车辆股份有限公司 | Rail vehicle high-tension electricity mutual inductor and transformer circuit module powering methods |
| CN105004943A (en) * | 2015-06-04 | 2015-10-28 | 北京智罗盘智能电气有限公司 | Electric energy quality monitoring and electric energy metering device that can be mounted and dismounted in an electrified manner at a high-tension side |
| CN105067853B (en) * | 2015-09-24 | 2018-04-20 | 珠海安瑞通电子科技有限公司 | A kind of high-voltage electric energy meter of the powered installation of adjustable length |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5087875A (en) * | 1990-04-05 | 1992-02-11 | General Electric Company | Isolated high voltage transformer for electric power meter |
| CN2611910Y (en) * | 2003-04-22 | 2004-04-14 | 李学湖 | Three-phase, four-line active watt-hour meter for power administrative network |
| CN200944560Y (en) * | 2006-09-08 | 2007-09-05 | 深圳市和而泰电子科技有限公司 | Resistance-capacitance voltage-reducing power circuit |
| CN201126631Y (en) * | 2007-12-14 | 2008-10-01 | 山东力创科技有限公司 | 6/10kV vertical compression type energy-saving high-voltage measuring box |
| CN201421466Y (en) * | 2009-06-09 | 2010-03-10 | 山东力创科技有限公司 | Small high-voltage kilowatt-hour meter directly arranged on 10KV power supply line |
-
2009
- 2009-06-09 CN CN2009100159676A patent/CN101571553B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5087875A (en) * | 1990-04-05 | 1992-02-11 | General Electric Company | Isolated high voltage transformer for electric power meter |
| CN2611910Y (en) * | 2003-04-22 | 2004-04-14 | 李学湖 | Three-phase, four-line active watt-hour meter for power administrative network |
| CN200944560Y (en) * | 2006-09-08 | 2007-09-05 | 深圳市和而泰电子科技有限公司 | Resistance-capacitance voltage-reducing power circuit |
| CN201126631Y (en) * | 2007-12-14 | 2008-10-01 | 山东力创科技有限公司 | 6/10kV vertical compression type energy-saving high-voltage measuring box |
| CN201421466Y (en) * | 2009-06-09 | 2010-03-10 | 山东力创科技有限公司 | Small high-voltage kilowatt-hour meter directly arranged on 10KV power supply line |
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| CN101571553A (en) | 2009-11-04 |
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Address after: 271100, Shandong Laiwu hi tech Zone, Phoenix Road, Shandong 009 force Technology Co., Ltd. Patentee after: SHANDONG LICHUANG SCIENCE AND TECHNOLOGY CO., LTD. Address before: 271100, Shandong Laiwu hi tech Zone, Phoenix Road, Shandong 009 force Technology Co., Ltd. Patentee before: Shandong Lichuang Science and Technology Co., Ltd. Address after: 271100, Shandong Laiwu hi tech Zone, Phoenix Road, Shandong 009 force Technology Co., Ltd. Patentee after: SHANDONG LICHUANG SCIENCE AND TECHNOLOGY CO., LTD. Address before: 271100, Shandong Laiwu hi tech Zone, Phoenix Road, Shandong 009 force Technology Co., Ltd. Patentee before: Shandong Lichuang Science and Technology Co., Ltd. |
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Granted publication date: 20101103 Termination date: 20190609 |
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