CN201084538Y - An electronic voltage mutual inductor with a fuse for mid-positioned cabinets - Google Patents
An electronic voltage mutual inductor with a fuse for mid-positioned cabinets Download PDFInfo
- Publication number
- CN201084538Y CN201084538Y CNU2007200455680U CN200720045568U CN201084538Y CN 201084538 Y CN201084538 Y CN 201084538Y CN U2007200455680 U CNU2007200455680 U CN U2007200455680U CN 200720045568 U CN200720045568 U CN 200720045568U CN 201084538 Y CN201084538 Y CN 201084538Y
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- China
- Prior art keywords
- arm resistance
- voltage arm
- low
- epoxy resin
- resin mixed
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- Expired - Lifetime
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Abstract
The utility model relates to an electronic voltage transformer for mid-placed switchgear with a fuse, comprising an equalizing electrode, a high voltage arm resistance, a low voltage arm resistance and an overvoltage protection device. The utility model is characterized in that the low voltage arm resistance is arranged in the center of the transformer; the overvoltage protection device is arranged on the right of the low voltage arm resistance; epoxy resin mixed glue is arranged above the low voltage arm resistance; the high voltage arm resistance is arranged above the epoxy resin mixed glue; the equalizing electrode is arranged on the left at the upper end of the high voltage arm resistance. Overcoming the defects of narrow frequency and slow response of the electromagnet current transformer in the prior art, the utility model has the advantages of convenient use, no need of maintenance for operation, light weight, high precision, good linearity, wide measurement range, high safety, avoidance of inflammable and explosive hazard caused by accumulated oil, low cost, rapid response, and ability to reform and improve the medium and low-voltage electrical equipments.
Description
Technical field: the utility model relates to a kind of Electronic formula potential transformer with fuse mid-set cupboard; it is applicable to the mid-cabinet of 35KV in the digital transformer substation complex automatic system; its output is the small voltage signal; can be directly and instrument, protective relaying device interface, thus realize metering, control, measure, the function of protection.
Technical background: along with the develop rapidly of electronic technology; microcomputer type relay protection and electronic electricity meter have progressively occupied leading position; in relaying protection and measuring, the energy stream and the separate from information flow of control section, thereby monitoring equipment no longer needs the instrument transformer of high power output.While, existing instrument transformer can not direct supporting use owing to the application of fast development, the integrated automation of transformation stations and the power distribution automation of power industry.Therefore it is extremely urgent to develop a kind of low energy consumption novel voltage mutual inductor with measurement, protection and ability to communicate.
Summary of the invention; The purpose of this utility model will provide a kind of Electronic formula potential transformer with fuse mid-set cupboard exactly, and it can solve the direct matching used problem of digital transformer substation complex automatic system intermediate switchgear cabinet well.The purpose of this utility model is to realize like this; a kind of Electronic formula potential transformer with fuse mid-set cupboard; be by the equal piezoelectricity utmost point; high-voltage arm resistance; epoxy resin mixed glue; low-voltage arm resistance; overvoltage protection; current transformer body is formed; it is characterized in that: the central low layer of current transformer body is provided with low-voltage arm resistance; the right of low-voltage arm resistance is provided with overvoltage protection; the top of low-voltage arm resistance is provided with epoxy resin mixed glue; the epoxy resin mixed glue top is provided with high-voltage arm resistance, and the left side, upper end of high-voltage arm resistance is provided with the equal piezoelectricity utmost point.
The utility model can also be made up of high-voltage terminal end, epoxy resin mixed glue, winding, secondary winding, iron core, a current transformer body, it is characterized in that: the central authorities of current transformer body are provided with iron core, be provided with secondary winding above the iron core, be provided with winding above the secondary winding one time, epoxy resin mixed glue is dashed and is being filled out current transformer body, and the left side, upper end of epoxy resin mixed glue is provided with the high-voltage terminal end one time.The utility model is easy to install, and operation does not need to safeguard.In light weight, precision is high, good linearity, measuring range are wide, shortcoming such as the frequency band that has overcome traditional electromagnetic potential transformer is narrow, low-response.Safe, the not danger such as inflammable, explosive that produces because of trapped fuel.Cost is low, instant effect, in existing, the transformation and the raising of low voltage electrical equipment have realistic meaning.And can directly be used in existing in, in the low pressure intermediate switchgear cabinet, all signals transmit by the multiple twin shielding conductor, help strengthening the ability of anti-electromagnetic interference.
Description of drawings: Fig. 1 is the structural representation that the utility model adopts resistance, capacitance-resistance dividing potential drop;
1. all the piezoelectricity utmost point, 2. high-voltage arm resistance, 3. epoxy resin mixed glue, 4. low-voltage arm resistance, 5. overvoltage protection, 6. current transformer body.
Fig. 2 is the structural representation that the utility model adopts the series inductance voltage divider;
11. high-voltage terminal end, 22. epoxy resin mixed glue, 33. windings, 44. secondary winding, 55. iron cores, 66. current transformer body.
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing; In Fig. 1; a kind of Electronic formula potential transformer with fuse mid-set cupboard of the utility model; be by the equal piezoelectricity utmost point 1; high-voltage arm resistance 2; epoxy resin mixed glue 3; low-voltage arm resistance 4; overvoltage protection 5; current transformer body 6 is formed; it is characterized in that: the central low layer of current transformer body 6 is provided with low-voltage arm resistance 4; the right of low-voltage arm resistance 4 is provided with overvoltage protection 5; the top of low-voltage arm resistance 4 is provided with epoxy resin mixed glue 3; epoxy resin mixed glue 3 tops are provided with high-voltage arm resistance 2, and the left side, upper end of high-voltage arm resistance 2 is provided with the equal piezoelectricity utmost point 1.
In Fig. 2, the utility model can also be made up of high-voltage terminal end 11, epoxy resin mixed glue 22, winding 33, secondary winding 44, unshakable in one's determination 55, current transformer body 66, it is characterized in that: the central authorities of current transformer body 66 are provided with unshakable in one's determination 55, be provided with secondary winding 44 above unshakable in one's determination 55, be provided with winding 33 above the secondary winding 44 one time, epoxy resin mixed glue 22 is dashed and is being filled out current transformer body 66, and the left side, upper end of epoxy resin mixed glue 22 is provided with high-voltage terminal end 11 one time.During concrete enforcement; in Fig. 1; adopt resistance, its output of capacitance-resistance dividing potential drop in whole measuring range, to be linear; convert a high voltage to low-voltage; export standard compliant secondary voltage after treatment; overvoltage protection is set, and is in order to prevent low-voltage arm resistance and to damage, and can limit the secondary voltage protection measuring system that raises.Owing to have stray capacitance between high-pressure side and voltage divider body and the ground, make voltage divider produce error, and the voltage skewness.Distribute, reduce the voltage divider error for improving voltage, add bucking electrode to compensate voltage divider stray capacitance over the ground at the voltage divider high-pressure side.Simultaneously, add bucking electrode, make voltage divider stray capacitance relative fixed over the ground at earth terminal.In Fig. 2, adopt the series inductance voltage divider to be in series with multistage non-saturable reactor, the little reactance of output voltage signal from be connected on circuit taken out, and as required, signal can take out at high-pressure side, also can take out at the voltage divider earth terminal.The series inductance voltage divider is that the effect of balance winding and coupling winding is the magnetic potential balance that guarantees each reactor unit of inductive voltage divider when different voltages, different loads, and makes each unit bear electric voltage equalization.The concrete numerical value of balance winding, coupling umber of turn must be adjusted by the method for measuring each element spread voltage again after Preliminary design.Adopt the design of resistance, capacitance-resistance dividing potential drop or series inductance voltage divider, secondary output meets the specified secondary output voltage of IEC60044-7:1999 and GB/T208407-2007 " electronic type voltage transformer " standard.Can be directly and instrument, protective relaying device interface, directly supporting with intermediate switchgear cabinet.Thereby realize the function of metering, control, measurement, protection.
Claims (2)
1. Electronic formula potential transformer with fuse mid-set cupboard is by the equal piezoelectricity utmost point (1); high-voltage arm resistance (2); epoxy resin mixed glue (3); low-voltage arm resistance (4); overvoltage protection (5); current transformer body (6) is formed; it is characterized in that: the central low layer of current transformer body (6) is provided with low-voltage arm resistance (4); the right of low-voltage arm resistance (4) is provided with overvoltage protection (5); the top of low-voltage arm resistance (4) is provided with epoxy resin mixed glue (3); epoxy resin mixed glue (3) top is provided with high-voltage arm resistance (2), and the left side, upper end of high-voltage arm resistance (2) is provided with the equal piezoelectricity utmost point (1).
2. Electronic formula potential transformer with fuse mid-set cupboard can also be by a high-voltage terminal end (11), epoxy resin mixed glue (22), a winding (33), secondary winding (44), (55) unshakable in one's determination, current transformer body (66) is formed, it is characterized in that: the central authorities of current transformer body (66) are provided with iron core (55), be provided with secondary winding (44) above (55) unshakable in one's determination, be provided with a winding (33) above the secondary winding (44), epoxy resin mixed glue (22) is dashed and is being filled out current transformer body (66), and the left side, upper end of epoxy resin mixed glue (22) is provided with a high-voltage terminal end (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200455680U CN201084538Y (en) | 2007-08-28 | 2007-08-28 | An electronic voltage mutual inductor with a fuse for mid-positioned cabinets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200455680U CN201084538Y (en) | 2007-08-28 | 2007-08-28 | An electronic voltage mutual inductor with a fuse for mid-positioned cabinets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201084538Y true CN201084538Y (en) | 2008-07-09 |
Family
ID=39627010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200455680U Expired - Lifetime CN201084538Y (en) | 2007-08-28 | 2007-08-28 | An electronic voltage mutual inductor with a fuse for mid-positioned cabinets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201084538Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867636A (en) * | 2012-09-17 | 2013-01-09 | 熊江咏 | Electronic voltage transformer matching with high-voltage GIS |
-
2007
- 2007-08-28 CN CNU2007200455680U patent/CN201084538Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867636A (en) * | 2012-09-17 | 2013-01-09 | 熊江咏 | Electronic voltage transformer matching with high-voltage GIS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Jingjiang Instrument Transformer Factory Co., Ltd. Assignor: Xiong Jiangyong Contract fulfillment period: 2008.11.10 to 2016.11.30 Contract record no.: 2008320001124 Denomination of utility model: An electronic voltage mutual inductor with a fuse for mid-positioned cabinets Granted publication date: 20080709 License type: Exclusive license Record date: 20081208 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.11.10 TO 2016.11.30; CHANGE OF CONTRACT Name of requester: JIANGSU JINGJIANG MUTUAL INDUCTOR CO., LTD., FACTO Effective date: 20081208 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160905 Address after: 214500 No. 23, Ping Road, west of Jiangsu, Jingjiang, Zhenjiang Patentee after: Jingjiang Jiangsu mutual inductor Limited by Share Ltd Address before: 214500 No. 23, Ping Road, west of Jiangsu, Jingjiang, Zhenjiang Patentee before: Xiong Jiangyong |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080709 |
|
| CX01 | Expiry of patent term |