CN2849925Y - Feed-through current transformer - Google Patents
Feed-through current transformer Download PDFInfo
- Publication number
- CN2849925Y CN2849925Y CN 200520106562 CN200520106562U CN2849925Y CN 2849925 Y CN2849925 Y CN 2849925Y CN 200520106562 CN200520106562 CN 200520106562 CN 200520106562 U CN200520106562 U CN 200520106562U CN 2849925 Y CN2849925 Y CN 2849925Y
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- CN
- China
- Prior art keywords
- secondary outlet
- main casing
- outlet box
- main shell
- secondary winding
- 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 - Lifetime
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Abstract
The utility model discloses a feed-through current transformer which comprises a main shell, a pair of main shell covers, a secondary outlet box cover, two secondary windings and a secondary outlet box, wherein the upper part of the main shell forms an upper shell which is symmetrically provided with annular containing chambers for the secondary windings in the front and the back, the center of the upper shell is provided with a feed-through hole, a pore canal which is penetrated by the outgoing line of the secondary winding is arranged between each containing chamber for the secondary windings and a chamber for the secondary outlet box, and the bottom of the main shell forms a machine base body which is internally provided with the chamber for the secondary outlet box, and is provided with secondary outlet hole at the side; the center of the pair of the main shell covers is provided with a feed-through hole which corresponds to the upper part of the main shell, and the pair of the main shell covers is fastened to the front and the back of the upper part of the main shell respectively. The secondary outlet box cover is fastened to the secondary outlet box of the lower part of the main shell; both of the two secondary windings are respectively arranged in the containing chambers of the front and the back secondary windings, and are made of an annular iron core and a secondary coil; tow pairs of secondary outlet terminals are arranged on the secondary outlet box, and are respectively and correspondingly connected with the outgoing line of both of two secondary windings. The main shell, the pair of the main shell covers and the secondary outlet box cover form an aluminium shielding outer shell.
Description
Technical field
The utility model relates to electrical equipment technical field, relates in particular to a kind of special equipment that is used on electric power system series compensation (comprising fixed series compensation and the controlled series compensation) platform.
Background technology
Series compensation is a series capacitor bank on the alternating current circuit of long distance, so as to the induction reactance of compensated line, realizes improving purposes such as the circuit transmission capacity and the raising stability of a system.
The series compensation Current Transformer is one of visual plant in the series compensation engineering.At present, Series Compensation has obtained extensive use abroad, at China's series compensation engineering many covers that also put into operation.And this several strings benefit engineerings all external each major company (as companies such as ABB, GE, Siemens) before 2004 of China accepts.Along with the very fast development of China's electric power system, Series Compensation will more and more be used in China, and therefore in order to reduce investment, power department has proposed string and mended the requirement that engineering domesticizes.Mend the needs of engineering production domesticization in order to adapt to string, comprise the special development of many series compensation equipment needs of series compensation Current Transformer.
Series compensation is with a wide range of applications in China's AC transmission system, the series compensation Current Transformer is the monitoring device that monitors each equipment work situation on the series compensation platform, belong to nonstandardized technique equipment, also there is not manufacturer production series compensation Current Transformer at home at present, and existing instrument transformer producer do not have suitable product to use, and therefore needs special development.
Summary of the invention
The purpose of this utility model provides a kind of straight-through current transformer, and its technical parameter satisfies the needs of series compensation engineering.
For achieving the above object, the utility model is taked following design: a kind of straight-through current transformer comprises:
One main casing, this main casing top is the front and back correspondence and is the secondary winding accommodation chamber of ring-type, the main casing central upper portion has the center hole that passes for bus, the bottom is secondary outlet box chamber, the duct of passing for the secondary winding outlet is arranged between each secondary winding accommodation chamber and secondary outlet box chamber, and secondary outlet box chamber side has the secondary wire hole;
A pair of main casing lid, the corresponding center hole that has with main casing top in center is respectively with the forward and backward fastening in the top of main casing;
Secondary outlet lid is with the secondary outlet box fastening of main casing bottom;
Two identical and place secondary winding in the forward and backward secondary winding accommodation chamber respectively, forms by annular core and secondary coil;
The secondary outlet box is provided with two pairs of secondary outlet terminals in it, two pairs of corresponding respectively outlets that connect two secondary winding of secondary outlet terminal.
Described main casing, a pair of main casing lid and secondary outlet lid have constituted the aluminium screening can.
The utility model has the advantages that:
1, good electromagnetic shielding is arranged, anti-electromagnetic interference capability is strong, can satisfy the needs of series compensation engineering;
2, it has the identical and secondary winding independently of two standby each other parameters of when operation, thereby has correspondingly reduced the quantity of equipment on the platform.
Description of drawings
Fig. 1 is the utility model structural representation (main looking)
Fig. 2 is the utility model structural representation (A-A analyses and observe)
Embodiment
As shown in Figure 1 and Figure 2, the utility model straight-through current transformer, its by main casing 3 and a pair of main casing lid 1, secondary outlet lid 6, place secondary winding 4 in the main casing and the secondary outlet terminal 7 in the secondary outlet box to constitute.
Correspondence has ring-type secondary winding accommodation chamber before and after the described main casing top, and its center has center hole 9, and the duct of passing for the secondary winding outlet is arranged between the bottom of each secondary winding accommodation chamber and secondary outlet box chamber.The main casing bottom has secondary outlet box chamber, and side has secondary wire hole 8;
Described a pair of main casing lid, the corresponding center hole 10 that has in center with main casing top, respectively with the forward and backward fastening in the top of main casing (can together) by bolted, and between seal with sealing ring 2,5.
According to the characteristics of series compensation platform, requiring this current transformer is punching, so the center of main casing and main casing lid is all had center hole, passes for bus; The running environment of considering this current transformer is very complicated, and need good electromagnetic shielding, specially at this secondary winding in current transformer and secondary outlet terminal peripheral hardware cast aluminium shell as screen, this screening can transition is smooth naturally, has avoided the corona discharge under high potential on the series compensation platform.
Described secondary outlet lid 6 is with the secondary outlet box fastening of main casing bottom.
According to the requirement of series compensation control protection and the purpose that reduces the quantity of equipment on the platform as far as possible; this current transformer design has two independently secondary winding; the parameter of these two secondary winding should be identical; standby each other during operation; place respectively and (be cast in it better with screening can in the forward and backward secondary winding accommodation chamber with epoxy resin; epoxy resin has not only played good insulating effect; and have a good adhesive effect), secondary winding is formed by annular core and secondary coil.
Described secondary outlet box is provided with the corresponding respectively outlet that connects two secondary winding of 7, two pairs of secondary outlet terminals of two pairs of secondary outlet terminals in it.
The utility model straight-through current transformer is a current transformer special-purpose on the series compensation platform, and it is applicable to and is installed on the series compensation platform, is used for the magnitude of current of each equipment on the series compensation platform of monitoring with the working condition of each equipment on the monitoring platform.
Claims (2)
1, a kind of straight-through current transformer is characterized in that it comprises:
One main casing, this main casing top is the front and back correspondence and is the secondary winding accommodation chamber of ring-type, the main casing central upper portion has the center hole that passes for bus, the bottom is secondary outlet box chamber, the duct of passing for the secondary winding outlet is arranged between each secondary winding accommodation chamber and secondary outlet box chamber, and secondary outlet box chamber side has the secondary wire hole;
A pair of main casing lid, the corresponding center hole that has with main casing top in center is respectively with the forward and backward fastening in the top of main casing;
Secondary outlet lid is with the secondary outlet box fastening of main casing bottom;
Two identical and place secondary winding in the forward and backward secondary winding accommodation chamber respectively, forms by annular core and secondary coil;
The secondary outlet box is provided with two pairs of secondary outlet terminals in it, two pairs of corresponding respectively outlets that connect two secondary winding of secondary outlet terminal.
2, straight-through current transformer according to claim 1 is characterized in that: described main casing, main casing lid and following secondary outlet lid constitute the aluminium screening can, and this aluminium screening can transition is smooth naturally; Two secondary winding and screening can are with poured with epoxy resin integral structure together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106562 CN2849925Y (en) | 2005-08-31 | 2005-08-31 | Feed-through current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106562 CN2849925Y (en) | 2005-08-31 | 2005-08-31 | Feed-through current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849925Y true CN2849925Y (en) | 2006-12-20 |
Family
ID=37522406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520106562 Expired - Lifetime CN2849925Y (en) | 2005-08-31 | 2005-08-31 | Feed-through current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849925Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376969A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode inductor |
| CN105699731A (en) * | 2015-11-16 | 2016-06-22 | 王爱玲 | Electronic voltage transformer |
| CN105759099A (en) * | 2015-11-16 | 2016-07-13 | 彭冬青 | Intelligent electronic current transformer |
| CN105785094A (en) * | 2015-11-16 | 2016-07-20 | 彭冬青 | Self-inspection electronic voltage transformer |
| CN108369857A (en) * | 2015-12-11 | 2018-08-03 | 阿莫绿色技术有限公司 | Magnetic screen type current transformer |
-
2005
- 2005-08-31 CN CN 200520106562 patent/CN2849925Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376969A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode inductor |
| CN105699731A (en) * | 2015-11-16 | 2016-06-22 | 王爱玲 | Electronic voltage transformer |
| CN105759099A (en) * | 2015-11-16 | 2016-07-13 | 彭冬青 | Intelligent electronic current transformer |
| CN105785094A (en) * | 2015-11-16 | 2016-07-20 | 彭冬青 | Self-inspection electronic voltage transformer |
| CN108369857A (en) * | 2015-12-11 | 2018-08-03 | 阿莫绿色技术有限公司 | Magnetic screen type current transformer |
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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: CHINA ELECTRIC POWER RESEARCH INSTITUTE Free format text: FORMER OWNER: BEIJING FUAN ELECTRIC EQUIPMENT CO.,LTD. Effective date: 20091120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091120 Address after: Beijing City, Haidian District small business Qinghe Road No. 15 Chinese Electric Power Research Institute of the Ministry of science and technology, zip code: 100192 Patentee after: China Electric Power Research Institute Address before: No. 4, 1 Street, 3 floor, Beijing, Haidian District. Zip code: 100085 Patentee before: Beijing Fuan Electric Corp. |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150831 Granted publication date: 20061220 |
|
| EXPY | Termination of patent right or utility model |