CN102738774A - Overvoltage protection capacitor device - Google Patents
Overvoltage protection capacitor device Download PDFInfo
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- CN102738774A CN102738774A CN2012101833526A CN201210183352A CN102738774A CN 102738774 A CN102738774 A CN 102738774A CN 2012101833526 A CN2012101833526 A CN 2012101833526A CN 201210183352 A CN201210183352 A CN 201210183352A CN 102738774 A CN102738774 A CN 102738774A
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- overvoltage protection
- reactor
- capacitor
- lightning arrester
- overvoltage
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Abstract
The invention provides an overvoltage protection capacitor device. The overvoltage protection capacitor device comprises a reactor, a capacitor bank, an arrester and an overvoltage protection device, wherein one end of the capacitor bank serves as a power end, and the other end of the capacitor bank is connected with one end of the reactor; one end of the arrester is connected with one end of the capacitor bank, and the other end of the arrester is grounded; and the overvoltage protection device is formed by connecting a resistor, a discharge gap and a discharge counter in series and is connected in parallel at two ends of the reactor. The overvoltage protection capacitor device has the advantages of effectively reducing the overvoltage, along with scientific design, high practicality and reliable operation.
Description
Technical field
The present invention relates to a kind of shunt capacitance device of power transmission system capacitive power compensation, specifically, related to a kind of overvoltage protection capacitor device.
Background technology
At present, it is unavoidable producing overvoltage during capacitor group switching, in order to reduce the overvoltage amplitude, protects the safety of loop equipment, so the lightning arrester that suppresses switching overvoltage is installed, this is the main means of limiting capacitance device group switching overvoltage.Install lightning arrester additional, select the special-purpose zero-clearance zinc oxide lightning arrester of capacitor group usually for use, because the gapless metal-oxide lighting arrester function admirable, this lightning arrester has at home and abroad obtained to use widely in the overvoltage protection of each step voltage.But; These lightning arrester can not capacitor for voltage protection electrode insulation; And because multiple factor, lightning arrester is in operation and repeatedly has an accident; Particularly the voltage across poles to capacitor does not have ripe safeguard measure, so the protection of the switching overvoltage of capacitor is to press at present to deal with problems.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The objective of the invention is the deficiency to prior art, thereby a kind of design science, practical, reliable and effectively reduce superpotential overvoltage protection capacitor device is provided.
To achieve these goals; The technical scheme that the present invention adopted is: a kind of overvoltage protection capacitor device comprises reactor, capacitor group, lightning arrester and overvoltage protection, wherein; One end of said capacitor group is as power end; The other end of said capacitor group is connected with said reactor, and an end of said lightning arrester is connected with an end of said capacitor group, the other end ground connection of said lightning arrester; Said overvoltage protection is composed in series by resistance and discharging gap, and said overvoltage protection is connected in parallel on the two ends of said reactor.
Based on above-mentioned, said lightning arrester is a zinc oxide arrester.
Based on above-mentioned, said overvoltage protection also is in series with discharge counter, and the distance of said overvoltage protection and said reactor is 200-1000mm.
The relative prior art of the present invention has outstanding substantive distinguishing features and marked improvement; Specifically; The present invention includes reactor and capacitor group, lightning arrester and overvoltage protection, between capacitor group and ground, insert lightning arrester, simultaneously with reactor that the capacitor group is connected on the shunt voltage protective device; Capacitor device is formed effective dual operation overvoltage protection, and it has design science, practical, reliable and effectively reduce superpotential advantage.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Through embodiment, technical scheme of the present invention is done further detailed description below.
As shown in Figure 1; A kind of overvoltage protection capacitor device comprises reactor 2, capacitor group 1, lightning arrester 3 and overvoltage protection 4, wherein; One end of said capacitor group 1 is as power end; The other end of said capacitor group 1 is connected with said reactor 2, and an end of said lightning arrester 3 is connected with an end of said capacitor group, the other end ground connection of said lightning arrester 3; Said overvoltage protection is made up of resistance 42, discharging gap 41 and discharge counter 5, and said overvoltage protection 4 is connected in parallel on the two ends of said reactor 2.
Based on above-mentioned, said lightning arrester 3 is zinc oxide arresters, and said zinc oxide arrester is a zero-clearance zinc oxide lightning arrester, and its function admirable is widely used, overvoltage that can limiting capacitance device group 2.
Based on above-mentioned, said lightning arrester 3 makes this device insulation against ground form effective overvoltage protection.
When connecting or excising above-mentioned capacitor group 1; The overvoltage that acts on the above-mentioned reactor 2 can make its parallelly connected discharging gap 41 disruptive discharges of crossing overvoltage protection 4; The resistance 42 access loops that to connect with discharging gap 41, this resistance 42 consumes the electromagnetic viscosimeter energy; In the transient process of discharging gap 41 disruptive discharges, overvoltage and overcurrent that the loop that this overvoltage protection 4 constitutes can suppression capacitor group 1; When transient process finished, reactor 2 recovered steady state voltages, and discharging gap 41 reliable arc extinguishings break capacitor group 1 from the loop, avoid unnecessary loss.
Based on above-mentioned; Said overvoltage protection 4 can suppress the switching overvoltage amplitude; Reduce the operation wave steepness; And can shorten the operation wave process, simultaneously, said overvoltage protection 4 can effectively form the electrode insulation protection to capital equipments such as the circuit breaker in this device loop, reactor, capacitor, discharge coils.
Based on above-mentioned, whether the said discharge counter 5 of connecting restrikes with monitoring breaker, in time find and the circuit breaker that will frequently restrike in time out of service, to avoid serious accident.
Based on above-mentioned, the distance of said overvoltage protection and said reactor is 200-1000mm, guarantees the insulation between reactor 2 and the overvoltage protection 4 with this.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (3)
1. overvoltage protection capacitor device; Comprise reactor and capacitor group, it is characterized in that: it also comprises lightning arrester and overvoltage protection, wherein; One end of said capacitor group is as power end; The other end of said capacitor group is connected with said reactor, and an end of said lightning arrester is connected with an end of said capacitor group, the other end ground connection of said lightning arrester; Said overvoltage protection is composed in series by resistance and discharging gap, and said overvoltage protection is connected in parallel on the two ends of said reactor.
2. overvoltage protection capacitor device according to claim 1 is characterized in that: said lightning arrester is a zinc oxide arrester.
3. overvoltage protection capacitor device according to claim 1 is characterized in that: said overvoltage protection also is in series with discharge counter, and the distance of said overvoltage protection and said reactor is 200-1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101833526A CN102738774A (en) | 2012-06-06 | 2012-06-06 | Overvoltage protection capacitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101833526A CN102738774A (en) | 2012-06-06 | 2012-06-06 | Overvoltage protection capacitor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102738774A true CN102738774A (en) | 2012-10-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101833526A Pending CN102738774A (en) | 2012-06-06 | 2012-06-06 | Overvoltage protection capacitor device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102738774A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532123A (en) * | 2013-10-29 | 2014-01-22 | 国家电网公司 | Protective circuit for switching over-voltage protection of dry air reactor |
| CN104167723A (en) * | 2014-08-06 | 2014-11-26 | 齐进 | Main transformer neutral point overvoltage protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667651Y (en) * | 2003-11-04 | 2004-12-29 | 弋东方 | Compound overvoltage protector |
| CN201001033Y (en) * | 2006-06-23 | 2008-01-02 | 西安盟创电器有限公司 | Overvoltage protector |
| CN201066763Y (en) * | 2007-06-13 | 2008-05-28 | 肖鹏 | Combined arrester for compound resistance capacitance |
| CN201199632Y (en) * | 2008-05-07 | 2009-02-25 | 桂林电力电容器有限责任公司 | Parallel capacitor apparatus with dual over-voltage protection |
| CN202678942U (en) * | 2012-06-06 | 2013-01-16 | 河南省电力公司信阳供电公司 | Overvoltage protection capacitor apparatus |
-
2012
- 2012-06-06 CN CN2012101833526A patent/CN102738774A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2667651Y (en) * | 2003-11-04 | 2004-12-29 | 弋东方 | Compound overvoltage protector |
| CN201001033Y (en) * | 2006-06-23 | 2008-01-02 | 西安盟创电器有限公司 | Overvoltage protector |
| CN201066763Y (en) * | 2007-06-13 | 2008-05-28 | 肖鹏 | Combined arrester for compound resistance capacitance |
| CN201199632Y (en) * | 2008-05-07 | 2009-02-25 | 桂林电力电容器有限责任公司 | Parallel capacitor apparatus with dual over-voltage protection |
| CN202678942U (en) * | 2012-06-06 | 2013-01-16 | 河南省电力公司信阳供电公司 | Overvoltage protection capacitor apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532123A (en) * | 2013-10-29 | 2014-01-22 | 国家电网公司 | Protective circuit for switching over-voltage protection of dry air reactor |
| CN103532123B (en) * | 2013-10-29 | 2016-02-10 | 国家电网公司 | A kind of protective circuit for dry-type air-core reactor switching overvoltage protection |
| CN104167723A (en) * | 2014-08-06 | 2014-11-26 | 齐进 | Main transformer neutral point overvoltage protection device |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121017 |