CN109935460A - A kind of capacitance type potential transformer - Google Patents
A kind of capacitance type potential transformer Download PDFInfo
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- CN109935460A CN109935460A CN201711344852.2A CN201711344852A CN109935460A CN 109935460 A CN109935460 A CN 109935460A CN 201711344852 A CN201711344852 A CN 201711344852A CN 109935460 A CN109935460 A CN 109935460A
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- electrode
- insulator
- pedestal
- capacitive divider
- capacitor group
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Abstract
The present invention relates to field of electrical equipment, specifically a kind of capacitance type potential transformer, including insulator, pedestal, intermediate transformer and multiple capacitive divider core groups, intermediate transformer is set in the pedestal, insulator is installed on the pedestal, the multiple capacitive divider core group is arranged in series in the insulator, and the multiple capacitive divider core component is at main capacitor group C1With voltage-dividing capacitor group C2, by the main capacitor group C1With voltage-dividing capacitor group C2Between draw in compression bonded line be connected with the intermediate transformer；The capacitive divider core group includes interior electrode, external electrode and bucking electrode, and the interior electrode both ends are equipped with bucking electrode, and bucking electrode and interior electrode are in same current potential, and the external electrode will entire interior electrode package.Capacitive divider core group of the invention is mainly made of coaxial electrode, and capacitance is not influenced by stray capacitance, capacitance high stability.
Description
Technical field
The present invention relates to field of electrical equipment, specifically a kind of capacitance type potential transformer.
Background technique
Capacitance type potential transformer (CVT) is a kind of voltage transformer being made of capacitive divider and electromagnetic unit,
When working under regular service conditions, the secondary voltage of electromagnetic unit and the primary voltage being added on capacitive divider are substantially at just
Than, and phase difference has the function of earthed voltage transformer close to zero.If traditional capacitance divider is mainly by dry condenser member
Part composition, capacitor element make electrode by aluminium foil, and kraft capacitor paper and polypropylene film make energy-accumulating medium, and winding forms electricity after flattening
Container core group is then placed in varnished insulation oil in the porcelain insulating casing of sealing, and installation is troublesome and there is capacitance stability when running
The space further improved.
Summary of the invention
The purpose of the present invention is to provide a kind of capacitance type potential transformers, and capacitive divider core group is mainly by coaxial electrode
Composition, capacitance are not influenced by stray capacitance, capacitance high stability.
The purpose of the present invention is achieved through the following technical solutions:
A kind of capacitance type potential transformer, including insulator, pedestal, intermediate transformer and multiple capacitive divider core groups, in
Between transformer be set in the pedestal, insulator is installed on the pedestal, and the multiple capacitive divider core group is arranged in series
In the insulator, and the multiple capacitive divider core component is at main capacitor group C1With voltage-dividing capacitor group C2, by the master
Capacitor group C1With voltage-dividing capacitor group C2Between draw in compression bonded line be connected with the intermediate transformer；The capacitive divider
Core group includes interior electrode, external electrode and bucking electrode, and the interior electrode both ends are equipped with bucking electrode, and bucking electrode and interior electrode
In same current potential, the external electrode will entire interior electrode package.
Plenum space closed, filled with SF6 gas is formed in the insulator.
It is equipped with primary connection terminal in the insulator upper end, the pedestal side is equipped with secondary wiring terminals.
The insulator upper end is equipped with upper cover, is equipped with explosion rupture disk on the upside of the upper cover, the primary connection terminal is set to institute
State upper cover side.
End is equipped with medium-tension bushing on the base, by the main capacitor group C1With voltage-dividing capacitor group C2Between draw
Middle compression bonded line be connected with the intermediate transformer by medium pressure casing.
Side is equipped with installation chassis on the base, and insulator is installed on the installation chassis.
Advantages of the present invention and good effect are as follows:
1, capacitive divider core group of the invention is mainly made of coaxial electrode, and capacitance is not by the shadow of stray capacitance
It rings, capacitance high stability.
2, the energy-accumulating medium in insulator of the present invention uses SF6 gas, SF6 gas be it is a kind of it is colourless, odorless, non-ignitable, not quick-fried,
Nontoxic gas, due to containing the very strong fluorine atom of electronegativity in the gas, so having good insulation performance and arc-extinguishing
Energy.
3, capacitive divider core group is changed to assemble after coaxial electrode structure more convenient by the present invention, when reducing production
Between.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention,
Fig. 2 is the capacitive divider core group schematic diagram in Fig. 1.
Wherein, 1 is intermediate transformer, and 2 be low-tension bushing, and 3 be medium-tension bushing, and 4 be installation chassis, and 5 be insulator, and 6 be electricity
Hold divider core group, 61 be interior electrode, and 62 be external electrode, and 63 be bucking electrode, and 7 be plenum space, and 8 be upper cover, and 9 be once to connect
Line terminals, 10 be explosion rupture disk, and 11 be secondary wiring terminals, and 12 be middle compression bonded line, and 13 be pedestal.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
As shown in Figure 1, the present invention includes insulator 5, pedestal 13, intermediate transformer 1 and multiple capacitive divider core groups 6, in
Between transformer 1 be set in the pedestal 13, insulator 5 is installed on the pedestal 13, and the multiple capacitive divider core group 6 is gone here and there
Connection is set in the insulator 5, and the multiple capacitive divider core group 6 is divided into main capacitor group C1With voltage-dividing capacitor group C2,
By the main capacitor group C1The middle compression bonded line 12 drawn between voltage-dividing capacitor group C2 is connected with the intermediate transformer 1,
Plenum space 7 closed, filled with SF6 gas is formed in the insulator 5.
As shown in Fig. 1~2, the capacity cell of the capacitive divider core group 6 uses coaxial cylindrical electrode structure, and energy storage is situated between
Matter uses SF6 gas.The capacitive divider core group 6 includes interior electrode 61, external electrode 62 and bucking electrode 63, the interior electrode
61 both ends are equipped with bucking electrode 63, the gap very little between bucking electrode 63 and interior electrode 61, and bucking electrode 63 and interior electrode
61 are in same current potential, and entire interior electrode 61 is wrapped up by external electrode 62, thus its capacitance is not influenced by stray capacitance.
As shown in Figure 1, being equipped with primary connection terminal 9 in 5 upper end of insulator, 13 side of pedestal is equipped with secondary connection
Terminal 11, the main capacitor group C1Upper end lead is connected with the primary connection terminal 9, the voltage-dividing capacitor group C2Lower end
Lead is connected with the secondary wiring terminals 11.
As shown in Figure 1, being equipped with low-tension bushing 2 and medium-tension bushing 3 in 13 upper end of pedestal, the low-tension bushing 2 is in
Pressing sleeve pipe 3 is connected with intermediate transformer 1, by the main capacitor group C1With voltage-dividing capacitor group C2Between the middle crimping drawn
Line 12 is connected with medium pressure casing 3, and 2 lead of low-tension bushing is connected with the secondary wiring terminals 11
As shown in Figure 1, being equipped with installation chassis 4 on the upside of the pedestal 13, insulator 5 is installed on the installation chassis 4,
5 upper end of insulator is equipped with upper cover 8, and explosion rupture disk 10 is equipped on the upside of the upper cover 8, and the primary connection terminal 9 is set to described
8 side of upper cover.The explosion rupture disk 10 is techniques well known.
The operation principle of the present invention is that:
Capacitive divider core group 6 of the invention is mainly made of coaxial electrode, and between bucking electrode 63 and interior electrode 61
Gap very little, bucking electrode 63 and interior electrode 61 be in same current potential, it is entire in electrode 61 pass through external electrode 62 and wrap up, thus its
Capacitance is not influenced by stray capacitance, and energy-accumulating medium uses SF6 gas, therefore capacitance high stability of the present invention.
When product is run, primary voltage is accessed in primary connection terminal 9, by calculating, is extracted in concatenated capacitive divider core group
One medium voltage, and condenser type is realized on the intermediate transformer 1 of medium voltage access electromagnetic unit by medium-tension bushing 3
The function of voltage transformer.
Claims (6)
1. a kind of capacitance type potential transformer, it is characterised in that: including insulator (5), pedestal (13), intermediate transformer (1) and more
A capacitive divider core group (6), intermediate transformer (1) are set in the pedestal (13), and insulator (5) is installed in the pedestal
(13) on, the multiple capacitive divider core group (6) is arranged in series in the insulator (5), and the multiple capacitive divider
Core group (6) is divided into main capacitor group C1With voltage-dividing capacitor group C2, by the main capacitor group C1With voltage-dividing capacitor group C2Between
Compression bonded line (12) is connected with the intermediate transformer (1) in extraction；The capacitive divider core group (6) include interior electrode (61),
External electrode (62) and bucking electrode (63), interior electrode (61) both ends be equipped with bucking electrode (63), and bucking electrode (63) with
Interior electrode (61) is in same current potential, and the external electrode (62) will entire interior electrode (61) package.
2. capacitance type potential transformer according to claim 1, it is characterised in that: formed in the insulator (5) it is closed,
Plenum space (7) filled with SF6 gas.
3. capacitance type potential transformer according to claim 1, it is characterised in that: be equipped with one in the insulator (5) upper end
Secondary connecting terminal (9), pedestal (13) side are equipped with secondary wiring terminals (11).
4. capacitance type potential transformer according to claim 3, it is characterised in that: insulator (5) upper end is equipped with upper cover
(8), explosion rupture disk (10) are equipped on the upside of the upper cover (8), the primary connection terminal (9) is set to the upper cover (8) side.
5. capacitance type potential transformer according to claim 1, it is characterised in that: in the pedestal (13) upper end is equipped with
Pressing sleeve pipe (3), by the main capacitor group C1With voltage-dividing capacitor group C2Between the middle compression bonded line (12) drawn pass through medium pressure
Casing (3) is connected with the intermediate transformer (1).
6. capacitance type potential transformer according to claim 1, it is characterised in that: be equipped with peace on the upside of the pedestal (13)
Cartridge chassis (4), insulator (5) are installed on the installation chassis (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711344852.2A CN109935460A (en) | 2017-12-15 | 2017-12-15 | A kind of capacitance type potential transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711344852.2A CN109935460A (en) | 2017-12-15 | 2017-12-15 | A kind of capacitance type potential transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109935460A true CN109935460A (en) | 2019-06-25 |
Family
ID=66979324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711344852.2A Withdrawn CN109935460A (en) | 2017-12-15 | 2017-12-15 | A kind of capacitance type potential transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109935460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248594A1 (en) * | 2020-06-10 | 2021-12-16 | 苏州电器科学研究院股份有限公司 | Capacitance-type voltage transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021514A (en) * | 1983-07-15 | 1985-02-02 | Mitsubishi Electric Corp | Gas capacitor type transformer |
| CN2328015Y (en) * | 1998-05-08 | 1999-07-07 | 西安电力电容器厂 | Capacitor voltage mutual inductor with harmonic detection function |
| JP2003059738A (en) * | 2001-08-16 | 2003-02-28 | Toko Electric Corp | Voltage transformer |
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| CN102005289A (en) * | 2010-10-22 | 2011-04-06 | 北京浩霆光电技术有限责任公司 | Resistor-capacitor voltage division principle-based voltage transformer |
| CN106872752A (en) * | 2015-12-14 | 2017-06-20 | 全球能源互联网研究院 | A kind of capacitance type potential transformer |
-
2017
- 2017-12-15 CN CN201711344852.2A patent/CN109935460A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021514A (en) * | 1983-07-15 | 1985-02-02 | Mitsubishi Electric Corp | Gas capacitor type transformer |
| CN2328015Y (en) * | 1998-05-08 | 1999-07-07 | 西安电力电容器厂 | Capacitor voltage mutual inductor with harmonic detection function |
| JP2003059738A (en) * | 2001-08-16 | 2003-02-28 | Toko Electric Corp | Voltage transformer |
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| CN102005289A (en) * | 2010-10-22 | 2011-04-06 | 北京浩霆光电技术有限责任公司 | Resistor-capacitor voltage division principle-based voltage transformer |
| CN106872752A (en) * | 2015-12-14 | 2017-06-20 | 全球能源互联网研究院 | A kind of capacitance type potential transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021248594A1 (en) * | 2020-06-10 | 2021-12-16 | 苏州电器科学研究院股份有限公司 | Capacitance-type voltage transformer |
| US11894180B2 (en) | 2020-06-10 | 2024-02-06 | Suzhou Apparatus Science Academy Co., Ltd. | Capacitive voltage transformer |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190625 |
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| WW01 | Invention patent application withdrawn after publication |