CN103426629B - A kind of low voltage power capacitor - Google Patents
A kind of low voltage power capacitor Download PDFInfo
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- CN103426629B CN103426629B CN201310361476.3A CN201310361476A CN103426629B CN 103426629 B CN103426629 B CN 103426629B CN 201310361476 A CN201310361476 A CN 201310361476A CN 103426629 B CN103426629 B CN 103426629B
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- capacitor
- current
- temperature signal
- terminal module
- power capacitor
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- 239000003990 capacitor Substances 0.000 title claims abstract description 86
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000741 silica gel Substances 0.000 claims description 11
- 229910002027 silica gel Inorganic materials 0.000 claims description 11
- 239000004593 Epoxy Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 238000012856 packing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Power Conversion In General (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention proposes a kind of low voltage power capacitor, is connected including the current temperature signal integrated terminal module being connected on capacitor lamina tecti and with current temperature signal integrated terminal module and for detecting the current transformer of power capacitor internal current signal and temperature sensor for detecting power capacitor interior temperature signal；Detection control unit outside the current temperature signal integrated terminal module connection capacitor, realizes the control and protection to capacitor.Advantage：Operating current situation and the temperature conditionss inside power capacitor can be monitored, feedback signal is quickly collected, power capacitor is protected in time.
Description
Technical field
This reality invention be related to low-voltage power and capacitance technical field, particularly relate to one kind be easy to sensing capacitor internal current and
The power capacitor of temperature.
Background technology
In low-voltage distribution, power capacitor is requisite.On traditional power capacitor lamina tecti only comprising A,
B, C three phase mains binding post and zero line binding post.Therefore, power capacitor itself cannot provide capacitor internal electric current letter
Number and temperature signal.Capacitor working stream situation can not be reflected in real time, to the exception feelings such as the harmonic wave in power system, surge
Condition is fed back in real time；Also capacitor cannot be protected by controlling the switching state of capacitor.Also in capacitor
The temperature in portion can not be measured in real time, it is impossible to realize the monitor in real time to the change of capacitor own temperature, so as to reflect electricity
The operating temperature state of container, realizes the protection to capacitor.
The content of the invention
The present invention proposes a kind of low voltage power capacitor, can not reflect capacitor working stream feelings in solving prior art
The problem of condition and monitoring internal temperature.
The technical scheme is that what is be achieved in that：A kind of low voltage power capacitor, including being connected to capacitor top cover
Current temperature signal integrated terminal module on plate and it is connected and is used to detect electricity with current temperature signal integrated terminal module
The current transformer of power capacitor internal current signal and the temperature sensor for detecting power capacitor interior temperature signal；
Detection control unit outside current temperature signal integrated terminal module connection capacitor, realize the control to capacitor and
Protection.
Three phase mains terminal module is provided with the capacitor lamina tecti further preferably as of the invention, described three
Power supply terminal is respectively equipped with phase power supply terminal module and current temperature signal integrated terminal module.
As the present invention further preferably, the power supply terminal includes：Plastic contact module, which is arranged on capacitor
On lamina tecti；Binding post/stud, which passes through plastic contact module to be arranged on capacitor lamina tecti；Silica gel sealing ring, which is arranged on
On capacitor lamina tecti and seal；Current transformer, which is arranged on the lower section of silica gel sealing ring；Epoxy pad, its
It is arranged on the lower section of current transformer；Nut, which is arranged on the lower section of epoxy pad, for connecting Binding post/stud and fixed silica gel
Sealing ring, current transformer and epoxy pad.
As of the invention further preferred, it is respectively equipped with and Current Mutual Inductance in the current temperature signal integrated terminal module
The current signal binding post and the temperature signal binding post being connected with temperature sensor of device connection.
As the present invention further preferably, the capacitor internal is provided with capacitance core group, and the temperature sensor is arranged on
Between capacitance core group.
As it is of the invention further preferably, the current temperature signal integrated terminal module and three phase mains terminal module it
Between be provided with the burst disk being connected with three phase mains terminal module.
As the present invention further preferably, the current temperature signal integrated terminal module is provided with zero terminal.
As the present invention further preferably, the center of the capacitor lamina tecti is provided with grounding screw.
Beneficial effects of the present invention are as follows：
Compared with traditional power capacitor, the present invention is provided with the Current Mutual Inductance of detection power capacitor internal current signal
Device and the temperature sensor for detecting power capacitor interior temperature signal.The operating current of capacitor can be reflected in real time
Situation, while the abnormal conditions such as the harmonic wave in power system, surge are fed back in real time, by the switching for controlling capacitor
State is protected to capacitor.By measuring capacitor internal temperature in real time, realize becoming capacitor own temperature
Change is monitored in real time, and reflects the operating temperature state of capacitor, realizes the protection to capacitor.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is capacitor top cover plate structure schematic diagram of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 is the sectional view of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As Figure 1-3, a kind of low voltage power capacitor, including capacitor lamina tecti 1, current temperature signal integrated terminal
Module 2 is separately mounted to the right and left of 1 upper surface of capacitor lamina tecti with three phase mains terminal module 5.Capacitor lamina tecti 1
Center be provided with grounding screw 18, it is ensured that the reliable ground of power capacitor.Current temperature signal integrated terminal module 2 sets
There is zero terminal 15.By forceful electric power module as three phase mains terminal module 5 and current temperature signal integrated terminal module 2 so
Light current module separately design, be designed with originally burst disk 11 in the intercondenser of two modules, can effectively ensure electricity
Container safety and reliability in use.Three phase mains terminal module 5 includes power supply terminal A phases, B phases and C
Phase.It is connected with wire between burst disk 11 and three phase mains terminal module 5, by the A phases of three phase mains terminal module 5, C phases and anti-
Electric clearance between quick-fried is designed as 19.5mm, meets the requirement that voltage is the electric clearance between 690V～800V.
Each power supply terminal 14 includes plastic contact module 13, Binding post/stud 6, silica gel sealing packing ring 8, Current Mutual Inductance
Device 3, epoxy pad 9, nut 10.Plastic contact module 13 is arranged on capacitor lamina tecti 1, and Binding post/stud 6 passes through plastic end
Submodule 13, and be arranged on capacitor lamina tecti 1；Silica gel sealing packing ring 8 is placed in Binding post/stud 6 and capacitor lamina tecti 1
Between, using 8 retractility of silica gel sealing packing ring and ductility, Binding post/stud 6 and 1 gap of capacitor lamina tecti are eliminated, zero is reached
Gap, also acts preferable sealing function；For the capacitor of oily formula, the fluid of capacitor internal can be effectively prevented from end
Overflow in sub-aperture；Simultaneously using the elasticity of silica gel sealing packing ring 8, the effect of spring shim is served here, with preferable
The effect for preventing nut 10 from loosening.In wiring screw rod 6, current transformer 3, this kind of connection are installed after silica gel sealing packing ring 8
On the one hand mode can increase the electric clearance and creep age distance between 10 capacitor lamina tecti 1 of nut, on the other hand can be compared with
The current signal of each phase in capacitor is measured accurately.Epoxy pad 9 is installed after current transformer 3, can play every
The effect of heat, insulation, increase electric clearance and creep age distance, while can guarantee that held stationary after the fastening of whole Binding post/stud 6.Examine
Consider the actual operating conditions of capacitor, its maximum is born voltage and is likely to be breached 800V, therefore, for three phase mains terminal module
5, the electric clearance between each power supply terminal is designed as into 16mm（According to the design of GB/T15576-2008 standards）.
Temperature sensor 4 is arranged on the center of the capacitance core group 7 of capacitor internal, for real-time and precise measurement electric power electricity
Internal operating temperature after container input.Temperature signal binding post 16 is installed in current temperature signal integrated terminal module 2,
The signal lead of current transformer 3 and the signal lead of temperature sensor 4 are connected to the electric current of power capacitor lamina tecti 1
In temperature signal integrated terminal module 2.Detection control unit 12 outside current temperature signal integrated terminal module 2 and capacitor
Connection, realizes the functions such as the switching control to capacitor and related protection.
The common apotype of power capacitor point and a point apotype.The power capacitor of apotype, needs two current transformers 3, A phases altogether
Current transformer 3 and C phase current mutual inductors 3, have IA1, IA2, IC1, IC2 totally 4 leads, will wherein two Same Name of Ends leads
IA2 and IC2 link together, and are connected in the current signal binding post 17 in current temperature signal integrated terminal module 2
On property line binding post IN, both threads in addition are connected respectively on IA and IC current signals binding post 17.Divide the electricity of apotype
Power capacitor, needs three current transformers 3, and A phase current mutual inductors 3, B phase current mutual inductors 3, C phase current mutual inductors 3 are common
6 leads of meter, wherein 3 Same Name of Ends lead IA2, IB2, IC2 link together, and are connected to current temperature signal integrated terminal
On the neutral line terminal IN of the current signal binding post 17 in module 2, in addition 3 draw root line IA1, IB1, IC1 connect respectively IA,
On IB, IC current signal binding post 17.Temperature sensor 4 has two leads, is connected to current temperature signal integration module 2
On two temperature signal binding posts 16 at upper middle part.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (6)
1. a kind of low voltage power capacitor, it is characterised in that including the current temperature signal being connected on capacitor lamina tecti (1)
Integrated terminal module (2), and it is connected with current temperature signal integrated terminal module (2) and for detecting inside power capacitor
The current transformer (3) of current signal and the temperature sensor (4) for detecting power capacitor interior temperature signal；The electricity
Detection control unit (12) outside stream temperature signal integrated terminal module (2) connection capacitor, realizes the control to capacitor
And protection；
Three phase mains terminal module (5) is provided with the capacitor lamina tecti (1), on the three phase mains terminal module (5)
It is provided with power supply terminal (14)；
The power supply terminal (14) includes：Plastic contact module (13), which is arranged on capacitor lamina tecti (1)；Wiring
Stud (6), which passes through plastic contact module (13) on capacitor lamina tecti (1)；Silica gel sealing ring (8), which is arranged on
On capacitor lamina tecti (1) and seal；Current transformer (3), which is arranged on the lower section of silica gel sealing ring (8)；Ring
Oxygen pad (9), which is arranged on the lower section of current transformer (3)；Nut (10), which is arranged on the lower section of epoxy pad (9), is used for
Connection Binding post/stud (6) and fixed silica gel sealing ring (8), current transformer (3) and epoxy pad (9).
2. a kind of low voltage power capacitor according to claim 1, it is characterised in that the integrated end of the current temperature signal
Be respectively equipped with submodule (2) the current signal binding post (17) that is connected with current transformer (3) and with temperature sensor (4)
The temperature signal binding post (16) of connection.
3. a kind of low voltage power capacitor according to claim 1 and 2, it is characterised in that the capacitor internal is provided with
Capacitance core group (7), the temperature sensor (4) are arranged between capacitance core group (7).
4. a kind of low voltage power capacitor according to claim 1, it is characterised in that the integrated end of the current temperature signal
The burst disk (11) being connected with three phase mains terminal module (5) is provided between submodule (2) and three phase mains terminal module (5).
5. a kind of low voltage power capacitor according to claim 2, it is characterised in that the integrated end of the current temperature signal
Submodule (2) is provided with zero terminal (15).
6. a kind of low voltage power capacitor according to claim 1, it is characterised in that on the capacitor lamina tecti (1)
Being provided with to make the Binding post/stud (18) of power capacitor reliable ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361476.3A CN103426629B (en) | 2013-08-19 | 2013-08-19 | A kind of low voltage power capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361476.3A CN103426629B (en) | 2013-08-19 | 2013-08-19 | A kind of low voltage power capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN103426629A CN103426629A (en) | 2013-12-04 |
| CN103426629B true CN103426629B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310361476.3A Active CN103426629B (en) | 2013-08-19 | 2013-08-19 | A kind of low voltage power capacitor |
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| Country | Link |
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| CN (1) | CN103426629B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280364A (en) * | 2015-06-24 | 2016-01-27 | 浙江海得新能源有限公司 | Installation structure of transformer |
| CN107633947A (en) * | 2017-08-31 | 2018-01-26 | 池州市容大电气有限公司 | A kind of intelligently realizing explosion-proof capacitor from explosion lid |
| CN113012935B (en) * | 2021-04-06 | 2024-12-31 | 柯贝尔电能质量技术（上海）有限公司 | Varistor for medium voltage capacitors |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234648Y (en) * | 1995-12-05 | 1996-09-04 | 胡庆胜 | Power capacitor with display function |
| EP0734032A3 (en) * | 1995-03-20 | 1996-11-13 | ROEDERSTEIN SPEZIALFABRIKEN FÜR BAUELEMENTE DER ELEKTRONIK UND KONDENSATOREN DER STARKSTROMTECHNIK GmbH | Power capacitor |
| CN2779575Y (en) * | 2005-03-21 | 2006-05-10 | 南通现代电力科技有限公司 | Low-voltage power capacitor with built-in temperature sensor |
| CN201117437Y (en) * | 2007-10-15 | 2008-09-17 | 田锡公 | Capacitor bank with temperature sensing |
| CN201466734U (en) * | 2009-07-02 | 2010-05-12 | 上海继铁电力自动化科技有限公司 | Intelligent phase control type low-voltage power capacitor |
| CN201570379U (en) * | 2009-11-12 | 2010-09-01 | 恒一电气有限公司 | Capacitor |
| CN201860119U (en) * | 2010-11-17 | 2011-06-08 | 杭州西子集团有限公司 | Integrated multi-loop low-voltage parallel-connection power capacitor |
| CN203103122U (en) * | 2013-01-09 | 2013-07-31 | 安徽精新能源科技股份有限公司 | Capacitor lead-out cover plate |
| CN203444980U (en) * | 2013-08-19 | 2014-02-19 | 浙江南德电气有限公司 | Low voltage power capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5320960B2 (en) * | 2007-10-10 | 2013-10-23 | パナソニック株式会社 | Case mold type capacitor |
-
2013
- 2013-08-19 CN CN201310361476.3A patent/CN103426629B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0734032A3 (en) * | 1995-03-20 | 1996-11-13 | ROEDERSTEIN SPEZIALFABRIKEN FÜR BAUELEMENTE DER ELEKTRONIK UND KONDENSATOREN DER STARKSTROMTECHNIK GmbH | Power capacitor |
| CN2234648Y (en) * | 1995-12-05 | 1996-09-04 | 胡庆胜 | Power capacitor with display function |
| CN2779575Y (en) * | 2005-03-21 | 2006-05-10 | 南通现代电力科技有限公司 | Low-voltage power capacitor with built-in temperature sensor |
| CN201117437Y (en) * | 2007-10-15 | 2008-09-17 | 田锡公 | Capacitor bank with temperature sensing |
| CN201466734U (en) * | 2009-07-02 | 2010-05-12 | 上海继铁电力自动化科技有限公司 | Intelligent phase control type low-voltage power capacitor |
| CN201570379U (en) * | 2009-11-12 | 2010-09-01 | 恒一电气有限公司 | Capacitor |
| CN201860119U (en) * | 2010-11-17 | 2011-06-08 | 杭州西子集团有限公司 | Integrated multi-loop low-voltage parallel-connection power capacitor |
| CN203103122U (en) * | 2013-01-09 | 2013-07-31 | 安徽精新能源科技股份有限公司 | Capacitor lead-out cover plate |
| CN203444980U (en) * | 2013-08-19 | 2014-02-19 | 浙江南德电气有限公司 | Low voltage power capacitor |
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| Publication number | Publication date |
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| CN103426629A (en) | 2013-12-04 |
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Address after: Room 1103-1, 11th Floor, Building 1, Aoqiang Building, No. 6 Xiyuan Fifth Road, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province, 310030 Patentee after: Zhejiang Nande Electric Group Co.,Ltd. Address before: Room 501, Building 3, No. 8 Xiyuan Road, Xihu District, Hangzhou City, Zhejiang Province, 310000 Patentee before: ZHEJIANG NANDA ELECTRICAL Co.,Ltd. |
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