CN103280792B - A kind of series compensation device porcelain overcoat voltage limiter - Google Patents
A kind of series compensation device porcelain overcoat voltage limiter Download PDFInfo
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- CN103280792B CN103280792B CN201310146398.5A CN201310146398A CN103280792B CN 103280792 B CN103280792 B CN 103280792B CN 201310146398 A CN201310146398 A CN 201310146398A CN 103280792 B CN103280792 B CN 103280792B
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- 239000012212 insulator Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 6
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Abstract
The present invention relates to a kind of series compensation device porcelain overcoat metal oxide pressure-limiting device (abbreviation voltage limiter).Series compensation device includes series compensation platform and the relevant device being arranged on series compensation platform, and voltage limiter is the main protecting equipment of series capacitor bank.Voltage limiter is composed in parallel by two groups of voltage limiter unit；Voltage limiter unit include seal, explosion-protection equipment, core body and with explosion-protection equipment with the use of two groups of arc guide rods, seal and explosion-protection equipment constitute sealing cavity, described core body is arranged in airtight cavity, the two ends being respectively arranged at described core body that two groups of arc guide rod directions are consistent；At the top of core body, spring is installed.The string benefit porcelain overcoat voltage limiter rated voltage related to reaches 210kV, uses single-unit insulator structure, and two ends use aluminium alloy cast flange, and core body uses four post non-linear resistors in parallel, and without forcing current-sharing measure in the middle of core body.The series compensation device that the voltage limiter developed is applicable to Capacitor banks rated voltage 120kV, level of protection is 2.3 times of Capacitor banks rated voltages.
Description
Technical field
The present invention relates to electrical equipment technical field, be specifically related to a kind of series compensation device porcelain overcoat voltage limiter.
Background technology
In recent years, in 220kV～the 550kV supertension series compensation device put into operation, some engineering is to be held by offshore company
Connecing, voltage limiter equipment therein is also provided by external several companies.In the world, the most several companies can provide string to mend
Device metal oxide pressure-limiting device product, the voltage limiter basic functional principle that each producer provides is identical, but structure is different.
Voltage limiter series compensation at home and abroad by DianKeYuan high pressure institute of China independent development has been used widely.2011,
The first series compensation of China, is also that first extra-high voltage series compensation engineering successfully puts into operation in the world.Wherein extra-high voltage series compensation voltage limiter
Supplied by China Electric Power Research Institute's independent research.At present, other producers are not the most also had to research and develop this equipment.
Metal oxide pressure-limiting device has that energy consumption is big, rated voltage is low, use the features such as multiple unit parallel forms, in order to prevent
Cause voltage limiter unit to damage because the shunting of each resistor disc intercolumniation is uneven, need to carry out special sheet of joining, so that used in parallel
The electric current distribution of each columnar resistance sheet the most uniformly, plays the effect of each resistor disc in MOV to greatest extent.
Voltage limiter is structurally made up of insulating coating, core body, explosion-protection equipment etc. substantially, and its core parts are the non-linear electricity of ZnO
Resistance sheet, this is similar with power system spark gap structure.Voltage limiter is protection equipment, in use with by protection equipment (as string
Connection Capacitor banks) in parallel.Voltage limiter is the protection for power-frequency overvoltage, and these are different from spark gap, and spark gap is mainly used in
In transformer station or transmission line of electricity switching overvoltage or the protection of lightning surge, the energy of absorption is the most little.Voltage limiter is as one
Planting protection equipment, it is sometimes desirable to sacrifice oneself and protect other equipment, first it is ensured that the safety of self, i.e. there is event at self in it
Other equipment can not be affected during barrier.And at present in engineering actual motion, have voltage limiter to occur quick-fried because of certain reason the most once in a while
Explode and cause the thing generation of other device damage around, the most from safety considerations, it is desirable to MOV should have very well
Ground pressure releasability.The rated voltage of 500kV series compensation device voltage limiter is generally not more than 150kV at present, and product height is not
The lowest higher than the rated voltage of 1.6m, 220kV series compensation device voltage limiter and product height.Compound inslation it is cased with outside voltage limiter
Overcoat and two kinds of porcelain overcoat.Composite sheath voltage limiter is limited due to the problem such as aging by organic composite material, and operating experience
It not the most the abundantest, so for voltage limiter, there is no advantage clearly.The operating experience of surge arresters with porcelain housings is enriched,
There is not the problems such as material aging, so being still widely used at present.For porcelain overcoat voltage limiter, one must solve
Key issue be the Explosion-Proof of porcelain overcoat voltage limiter, because if the consequence that insulator blast causes can be the most serious.The outer noose of porcelain
The voltage limiter of structure or the big current stresses releasability of spark gap are generally 50kA, in order to improve pressure release capabilities, and a lot of producers
Often it is provided with arc cylinder at inwall.The method is suitable for for spark gap, but can affect during voltage limiter internal employing arc cylinder
Voltage limiter radiating rate after absorbing energy, thus affect the making time again of voltage limiter and series compensation device, the whole series string is mended by this
The utilization rate of device is disadvantageous.
It addition, voltage limiter uses the resistor disc connection in series-parallel of a lot of nonlinear wind vibration, owing to the volt-ampere of these resistor discs is special
Property can not be consistent, so needing to carry out special combo so that shunting effect is the most consistent.Realizing voltage limiter multicolumn also
CURRENT DISTRIBUTION between connection resistor disc post is tried one's best in uniform method, and the method that different voltage limiter producers take also differs, and reaches
Effect the most different.On international and domestic standard or during Bidding Invition to the requirement of MOV current stabilizing factor the most not at present
More than 1.1.
From calendar year 2001, my unit starts independent research transmission line of alternation current series compensation complete set of equipments, and current all devices is real
Now domesticizing, and have independent intellectual property right, wherein metal oxide pressure-limiting device occupies critical role in string mends complete set of equipments.
2004, the string benefit metal oxide pressure-limiting device of independent development first overlapping at home put into fortune in domestic 220kV series compensation device
OK, 2006, the string benefit metal oxide pressure-limiting device of development first overlapping in domestic 500kV series compensation device at home was put into operation.
Along with the fast development of China's UHV transmission technology, China's DianKeYuan starts independent research extra-high voltage series compensation main equipment, wherein
Extra-high voltage series compensation voltage limiter is one of them.
At the beginning of 2009, China's AC extra high voltage Test and pilot project puts into operation, and in order to its conveying capacity is greatly improved, makes this engineering
Single time UHV transmission line reaches the ability of stable conveying 5,000,000 kilowatts, it is necessary to use extra-high voltage series compensation technology.Therefore from 2009
The second half year in year, China Electric Power Research Institute has carried out key technology research and the equipment development of extra-high voltage series compensation device.Make
For the main protecting equipment in series compensation device, extra-high voltage series compensation voltage limiter is one of important research contents.2011, China's electricity
The independent research of institute of section has gone out extra-high voltage series compensation voltage limiter, and puts into engineering operation the end of the year 2011, and this is that first set is extra-high in the world
Pressure string benefit voltage limiter.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of series compensation device porcelain overcoat voltage limiter, development of the present invention
Extra-high voltage series compensation voltage limiter rated voltage reach 210kV, use single-unit insulator structure, two ends use aluminium alloy cast flange,
Core body uses four post non-linear resistors in parallel, and does not force current-sharing measure in the middle of core body, and diverting coefficient is not more than 1.03, greatly
Current stresses releasability reaches 63kA/0.2s.The voltage limiter developed is applicable to Capacitor banks rated voltage 120kV, level of protection
It it is the series compensation device of 2.3 times of Capacitor banks rated voltages.
It is an object of the invention to use following technical proposals to realize:
A kind of series compensation device voltage limiter, described pressure limiting device 9 is arranged on series compensation platform 8, and described voltage limiter 9 is by two groups of limits
Depressor unit composes in parallel；It thes improvement is that, described voltage limiter unit includes seal 3, explosion-protection equipment 5, core body 1
And with explosion-protection equipment 5 with the use of two groups of arc guide rods 2, described seal 3 and explosion-protection equipment 5 consist of close sealing ring
Envelope cavity, described core body 1 is arranged in annular seal space body, and what described two groups of arc guide rod 2 directions were consistent is respectively arranged at described core body
The two ends of 1；At the top of described core body 1, spring is installed.
Wherein, described voltage limiter unit bottom is provided with metal mounting base 10, metal mounting base 10 and series compensation platform 8 it
Between insulation column 11 is installed；The binding post 6 at described voltage limiter top is connected together by busbar and is followed by series compensation platform 8
High voltage bus 12；Two groups of voltage limiter unit are connected to the low-voltage bus bar 13 of series compensation platform 8 after being connected in parallel；Described two groups of limits
Depressor unit is all equiped with current transformer.
Wherein, the mode of connection of described voltage limiter unit is " Z " font, and i.e. the angle of high voltage bus 12 and low-voltage bus bar 13 is not
Less than 135 degree.
Wherein, described explosion-protection equipment 5 quantity is 2, is respectively arranged at the two ends of seal 3；Described explosion-protection equipment 5 uses
Rupture pressure disc, with the Liang Zudaohu road set up separately on the upper and lower electrode of core body 1 with the use of；
Described Dao Hu road is the circular Dao Hu road that plural arch starting rod 2 phase pad closes, or is plural straight or curved
Shape arc guide rod mutually encloses polygon Dao Hu road；Wherein one end is fixed on electrode and electrical communication, is filled by insulation at the other end
Put 3 to be fixed on electrode.
Wherein, Ge Daohu road is enclosed by 3～4 arch starting rods 2 and forms.
Wherein, described seal 3 uses insulating coating, described insulating coating to be single-unit insulator structure.
Wherein, described metal oxide pressure-limiting device includes flange 4, the two ends of described insulating coating respectively with described flange 4 mucilage binding
Together；Described flange 4 is the metal flange with arc spraying mouth.
Wherein, described metal flange is that flange poured into a mould by aluminium alloy.
Wherein, described binding post 6 is arranged on top flange 4 upper surface.
Wherein, described core body 1 is composed in parallel by four post non-linear resistors, and every columnar resistance sheet is provided with 3～4 epoxy spike pullings,
Constitute the upper electrode of core body 1 after the top parallel connection of resistor disc post, after the parallel connection of bottom, constitute the bottom electrode of core body 1.
Wherein, four post non-linear resistors only have two ends to be connected in parallel, middle without forcing current-sharing measure；Dividing of described voltage limiter
Stream coefficient is not higher than 1.03.
Wherein, the rated voltage >=210kV of described voltage limiter, highly >=2.2m, for Capacitor banks rated voltage 120kV,
Level of protection is the series compensation device of 2.3 times of Capacitor banks rated voltages.
Compared with the prior art, the present invention reaches to provide the benefit that:
1, voltage limiter core body two ends are designed with and lead arc device, abundant with the use of the safety that can be greatly improved insulating coating with rupture pressure disc
Degree so that voltage limiter has the highest pressure release capabilities, reaches 63kA/0.2s.
2, arc cylinder is the most additionally installed inside insulating coating, when metal oxide pressure-limiting device MOV is at properly functioning middle absorption energy
After amount can heat radiation faster, improve the operational reliability of metal oxide pressure-limiting device MOV and the utilization rate of equipment.
3, the current-sharing performance between the resistor disc post that string benefit porcelain overcoat voltage limiter multicolumn is in parallel is good.Through special join sheet after, grind
The diverting coefficient of the string benefit voltage limiter of system is not higher than 1.03, far below the 1.1 of present common demands.
4, the string benefit porcelain overcoat voltage limiter rated voltage developed reaches 210kV, uses single-unit insulator structure, and two ends use aluminum to close
Gold cast flange, core body uses four post non-linear resistors in parallel, and does not force current-sharing measure in the middle of core body.The pressure limiting developed
The series compensation device that device is applicable to Capacitor banks rated voltage 120kV, level of protection is 2.3 times of Capacitor banks rated voltages.
5,2011, China's DianKeYuan independent research went out extra-high voltage series compensation metal oxide pressure-limiting device MOV, and in 2011
Putting into extra-high voltage grid the end of the year to run, this is that head overlaps extra-high voltage series compensation metal oxide pressure-limiting device MOV, safety and stability in the world
Run so far.
Accompanying drawing explanation
Fig. 1 is the string benefit metal-oxide porcelain overcoat voltage limiter MOV structural representation that the present invention provides；
Fig. 2 is the structure top view of the string benefit metal-oxide porcelain overcoat voltage limiter MOV that the present invention provides；
Fig. 3 is the series compensation device wiring schematic diagram that the present invention provides；
Fig. 4 is the series compensation device wiring top view that the present invention provides.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
The series compensation device porcelain overcoat voltage limiter that the present invention provides, metal oxide pressure-limiting device therein (is called for short voltage limiter, MOV)
Being the main protecting equipment in AC electric power systems compensator with series capaci tance, effect is to utilize the non-linear volt that it is good when necessary
Peace characteristic limits the overvoltage at series capacitor bank two ends, reaches to protect the purpose of series capacitor bank.
The present invention provide series compensation device wiring schematic diagram as it is shown on figure 3, voltage limiter 9 is arranged on series compensation platform 8, voltage limiter
9 are composed in parallel by two groups of voltage limiter unit；Voltage limiter unit include seal 3, explosion-protection equipment 5, core body 1 and with explosion-proof dress
Put 5 with the use of two groups of arc guide rods 2, described seal 3 and explosion-protection equipment 5 constitute and seal cavity, and described core body 1 sets
It is placed in airtight cavity, the two ends being respectively arranged at described core body 1 that described two groups of arc guide rod 2 directions are consistent；At described core body
The top of 1 is provided with spring.String benefit is with metal-oxide porcelain overcoat voltage limiter MOV structural representation as shown in Figure 1.
Explosion-protection equipment 5 quantity is 2, is respectively arranged at the two ends of seal 3；Described explosion-protection equipment 5 uses rupture pressure disc, with
Set up separately Liang Zudaohu road on the upper and lower electrode of core body 1 with the use of；Dao Hu road is that plural arch starting rod 2 phase is protected
The circular Dao Hu road enclosed, or mutually enclose polygon Dao Hu road for plural straight or bending arc guide rod；Wherein one end is fixed
On electrode and electrical communication, at the other end by seal 3 fixing with on electrode.Arc is led by 3～4 arcs in Ge Daohu road
Rod 2 encloses and forms.Seal 3 uses insulating coating, and insulating coating is single-unit insulator structure.
The insulating coating two ends of voltage limiter are respectively with together with leading metal flange 4 mucilage binding of nock, and insulating coating two ends are designed
There are rupture pressure disc, rupture pressure disc to constitute one with insulating coating by sealing ring and seal cavity.Seal inside cavity equipped with voltage limiter core body
1, core body 1 is to be formed in parallel by multicolumn non-linear resistor, and there have 3～4 epoxy spike pullings to support around every columnar resistance sheet to be solid
Fixed, they play the effect strengthening core body 1 structural strength, and core body 1 two ends are designed with arc guide rod 2.In order to by core body 1 in chamber
Internal fixing well, core body 1 top is provided with spring, makes core body 1 bear precompression always.The string that the present invention provides is mended and is used
The structure top view of metal oxide pressure-limiting device MOV is as shown in Figure 2.
The direction of voltage limiter upper/lower terminal arc guide rod 2 is consistent, to realize when voltage limiter produces electric arc because of certain reason in inside,
The electric power that electric arc self can be utilized to produce makes electric arc rotate, so that electric arc relatively evenly adds thermally insulating envelope, it is to avoid electric arc
Only certain of insulating coating is carried out calcination；While electric arc burns in insulating coating, in voltage limiter cavity can be made
Gas pressure increases rapidly, owing to the intensity of the rupture pressure disc design at voltage limiter two ends itself is much smaller than the intensity of insulating coating, so
When internal pressure is sufficiently large, explosion after rupture pressure disc stress so that the spray that the high temperature and high pressure gas within voltage limiter is preset from two ends
Nock sprays, and this makes voltage limiter MOV internal pressure diminish rapidly, ensures that insulating coating itself will not damage, no
Surrounding devices can be damaged.Arc guide rod within voltage limiter and rupture pressure disc are with the use of being greatly improved insulating coating at voltage limiter
By margin of safety during electric arc calcination inside MOV so that voltage limiter has the highest pressure release capabilities.Simultaneously as absolutely
Edge jacket internal the most additionally installs arc cylinder, so when MOV can dispel the heat after properly functioning middle absorption energy more quickly,
The operational reliability of MOV and the utilization rate of equipment are greatly improved.The voltage limiter big current stresses releasability of the present invention reaches
63kA/0.2s。
In order to reduce MOV fault rate when properly functioning to greatest extent, in addition to ensuring that outside the sealing effectiveness of MOV,
An important link is to improve the current-sharing effect between the non-linear resistor that multicolumn is in parallel.When MOV runs, multicolumn resistor disc
Being connected in parallel, bear identical voltage, the resistor disc used due to MOV is the resistor disc with nonlinear wind vibration,
If between resistor disc post shunting inequality, flow through the bigger resistor disc post of electric current it may happen that thermal runaway and make MOV unit damage
Bad, Operation of Electric Systems will be caused serious consequence.Therefore MOV needs to take measures, and makes each electricity run that is connected in parallel
CURRENT DISTRIBUTION nonuniformity coefficient (diverting coefficient) between resistance sheet post is the least.The product of the present invention, when joining sheet, is first surveyed
Try the residual voltage of each resistor disc, then according to certain rule carries out joining sheet, generate the resistor disc post needed, if the residual voltage of each post
Difference beyond allowed band, then need to join sheet further, from two posts that pressure reduction is maximum, respectively select one group of valve according to certain rule
Sheet is exchanged, and makes pressure reduction be gradually lowered, and finally makes the residual voltage difference of each post in parallel in allowed band.Sheet is joined through special
After, the diverting coefficient of the string benefit porcelain overcoat voltage limiter of development is not higher than 1.03, far below 1.1 be generally given now.
The string benefit porcelain overcoat voltage limiter rated voltage developed reaches 210kV, and product height reaches 2.2m, uses single-unit insulator knot
Structure, two ends use aluminium alloy flange, and core body uses four post non-linear resistors in parallel, and do not set pressure current-sharing measure in the middle of core body.
The voltage limiter developed is applicable to Capacitor banks rated voltage 120kV, level of protection is the series compensation device of about 2.3.
During engineer applied, after the rated voltage of series capacitor compensation group determines, need to calculate requirement of engineering by system emulation
The rated voltage of voltage limiter unit and quantity in parallel, be typically connected in parallel use by ten several even tens MOV unit,
Realize the huge energy absorbability of MOV.Mend monitoring and the protection of MOV to realize string, MOV unit is at series compensation platform
When being arranged on 8, it is arranged to two groups), Current Transmit is installed in low-voltage bus bar 13 side of each group of MOV, logical
The electric current crossing two groups of MOV unit of measurement determines whether that MOV unit breaks down.When MOV parallel connection quantity is more, by
In being limited by platform area, MOV can be divided into two parts in parallel, every part still can be arranged to two groups.
As shown in Figure 4, all MOV being connected in parallel are arranged on string filling-in to the series compensation device wiring top view that the present invention provides
On platform 8, every MOV unit bottom has a special metal mounting base 10, and MOV metal mounting base 10 and string filling-in
Being provided with insulation column 9 between platform 8, insulation column is insulator JYZ, and insulator JYZ here plays and insulate simultaneously and prop up
The effect of support.Binding post 6 is arranged on the upper surface of top flange 4.Each MOV unit top binding post 6 passes through busbar
Connecting together the high voltage bus 12 being followed by series compensation platform, the bottom of two groups of MOV unit is connected in parallel, the most respectively
It is connected to the low-voltage bus bar 13 of series compensation platform 8, and two MOV branch roads are separately installed with Current Transmit, be used for measuring often
The electric current of individual MOV branch road.Can also be that a CT measures one of them branch current, another CT measures two branch roads
Total current, then by subtracting each other the electric current obtaining another one branch road.
It can be seen from figure 4 that for often organizing MOV unit, its mode of connection is similar to " Z " font, high and low
The angle of pressure bus not less than 135 degree, such a benefit be when MOV is internal produce electric arc time, electric arc by outside height,
The electric power basic neutralisation that in low compression bonded line, electric current produces, can ignore.This is relative to being similar to the mode of connection of "U" shaped,
The i.e. angle of high and low pressure bus is not more than the mode of connection of 90 degree, more favourable to the safety of MOV insulating coating.Because at " U "
Under the shape mode of connection, when MOV internal generation electric arc, the electric power that electric arc is produced by electric current in outside high and low pressure wiring
Meeting superposition, makes electric arc certain deviation to MOV, causes the calcination insulating coating that electric arc is more concentrated, make insulating coating more hold
Fragile.
Voltage limiter of the present invention is applicable not only to the overvoltage protection of series capacitor compensation group, applies also for straight-flow system neutral bus electric capacity
The overvoltage protections such as device group, Large Copacity filter capacitor group.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit, although reference
The present invention has been described in detail by above-described embodiment, those of ordinary skill in the field it is understood that still can to this
Invention detailed description of the invention modify or equivalent, and without departing from spirit and scope of the invention any amendment or etc.
With replacing, it all should be contained in the middle of scope of the presently claimed invention.
Claims (2)
1. a series compensation device porcelain overcoat voltage limiter, described voltage limiter (9) is arranged on series compensation platform (8), described pressure limiting
Device (9) is composed in parallel by two groups of voltage limiter unit；It is characterized in that, described voltage limiter unit includes seal (3), explosion-proof
Device (5), core body (1) and with explosion-protection equipment (5) with the use of two groups of arc guide rods (2), described seal (3) and
Explosion-protection equipment (5) constitutes sealing cavity by sealing ring, and described core body (1) is arranged in annular seal space body, leads arc for described two groups
The two ends being respectively arranged at described core body (1) that rod (2) direction is consistent；At the top of described core body (1), spring is installed；
Described voltage limiter unit bottom is provided with metal mounting base (10), at metal mounting base (10) and series compensation platform (8)
Between insulation column (11) is installed；The binding post (6) at described voltage limiter top is connected together by busbar and is followed by string
The high voltage bus (12) of filling-in platform (8)；Two groups of voltage limiter unit are connected to series compensation platform (8) low pressure after being connected in parallel is female
Line (13)；Described two groups of voltage limiter unit are all equiped with current transformer；
The mode of connection of described voltage limiter unit is " Z " font, and i.e. the angle of high voltage bus (12) and low-voltage bus bar (13) is not
Less than 135 degree；
Described explosion-protection equipment (5) quantity is 2, is respectively arranged at the two ends of seal (3)；Described explosion-protection equipment (5) is adopted
With rupture pressure disc, with set up separately respectively set on upper and lower two electrodes of core body (1) a Zu Daohu road with the use of；
Described Dao Hu road is the circular Dao Hu road that plural arch starting rod (2) phase pad closes, or be plural directly or
Bending arc guide rod mutually encloses polygon Dao Hu road；Setting up each Zu Daohu road on upper and lower two electrodes separately, one of which leads arc
One end, road is fixed on electrode and electrical communication, and the other end is fixed on upper electrode by seal；Another Zu Daohu road one
End is fixed on bottom electrode and electrical communication, and the other end is fixed on bottom electrode by seal；
Described seal (3) uses insulating coating, and described insulating coating is single-unit insulator structure；
Described metal oxide pressure-limiting device includes flange (4), and the two ends of described insulating coating exist with described flange (4) mucilage binding respectively
Together；Described flange (4) is the metal flange with arc spraying mouth；
Described metal flange is that flange poured into a mould by aluminium alloy；
Described binding post (6) is arranged on top flange (4) upper surface；
Described core body (1) is composed in parallel by four post non-linear resistors, and every columnar resistance sheet is provided with 3～4 epoxy spike pullings and fixes,
Constitute the upper electrode of core body (1) after the top parallel connection of resistor disc post, after the parallel connection of bottom, constitute the bottom electrode of core body (1)；
Four post non-linear resistor two ends are connected in parallel, middle without forcing current-sharing measure；The diverting coefficient of described voltage limiter is the highest
In 1.03；
Rated voltage >=the 210kV of described voltage limiter, highly >=2.2m, for Capacitor banks rated voltage 120kV, protection water
Putting down is the series compensation device of 2.3 times of Capacitor banks rated voltages.
2. series compensation device porcelain overcoat voltage limiter as claimed in claim 1, it is characterised in that Ge Daohu road is by 3～4 arcs
Arc guide rod (2) encloses and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146398.5A CN103280792B (en) | 2013-04-24 | 2013-04-24 | A kind of series compensation device porcelain overcoat voltage limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146398.5A CN103280792B (en) | 2013-04-24 | 2013-04-24 | A kind of series compensation device porcelain overcoat voltage limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103280792A CN103280792A (en) | 2013-09-04 |
| CN103280792B true CN103280792B (en) | 2016-09-21 |
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| CN201310146398.5A Active CN103280792B (en) | 2013-04-24 | 2013-04-24 | A kind of series compensation device porcelain overcoat voltage limiter |
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| CN104392815A (en) * | 2014-11-21 | 2015-03-04 | 国家电网公司 | Method for selecting and assembling valve plates of zinc oxide voltage dependent resistor |
| CN111508674B (en) * | 2020-05-24 | 2022-02-01 | 厦门中高智能电器科学研究院有限公司 | Zinc oxide resistance card homoenergetic matching method |
| CN111781452B (en) * | 2020-06-30 | 2022-04-15 | 国网宁夏电力有限公司电力科学研究院 | Method, device and medium for allocating groups of multi-column parallel lightning arrester groups |
| CN113096899A (en) * | 2021-03-29 | 2021-07-09 | 湖南防灾科技有限公司 | Lightning protection insulator with multi-column cake-shaped resistor discs connected in parallel |
| CN113316337B (en) * | 2021-04-30 | 2024-03-08 | 中国电力科学研究院有限公司 | End cover for series compensation pressure limiter and series compensation pressure limiter |
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| CN2824252Y (en) * | 2005-08-31 | 2006-10-04 | 北京伏安电气公司 | Explosion prevention device for high capacity metal oxide voltage limiter |
| CN201113419Y (en) * | 2007-09-14 | 2008-09-10 | 西安电力机械制造公司 | Ultra-high voltage porcelain bushing type lightning arrestor |
| CN202651779U (en) * | 2012-06-18 | 2013-01-02 | 南阳金冠电气有限公司 | Voltage limiter for protection of high voltage AC series-connection compensation capacitor group |
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| US5510942A (en) * | 1994-12-19 | 1996-04-23 | General Electric Company | Series-capacitor compensation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2824252Y (en) * | 2005-08-31 | 2006-10-04 | 北京伏安电气公司 | Explosion prevention device for high capacity metal oxide voltage limiter |
| CN201113419Y (en) * | 2007-09-14 | 2008-09-10 | 西安电力机械制造公司 | Ultra-high voltage porcelain bushing type lightning arrestor |
| CN202651779U (en) * | 2012-06-18 | 2013-01-02 | 南阳金冠电气有限公司 | Voltage limiter for protection of high voltage AC series-connection compensation capacitor group |
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