CN206602358U - A kind of APB is complete mutually from disengaging protection device - Google Patents
A kind of APB is complete mutually from disengaging protection device Download PDFInfo
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- CN206602358U CN206602358U CN201720020612.6U CN201720020612U CN206602358U CN 206602358 U CN206602358 U CN 206602358U CN 201720020612 U CN201720020612 U CN 201720020612U CN 206602358 U CN206602358 U CN 206602358U
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- Prior art keywords
- apb
- overvoltage
- protection device
- resistor
- complete mutually
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- 238000004880 explosion Methods 0.000 claims abstract description 13
- 241000272165 Charadriidae Species 0.000 claims abstract description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 36
- 239000011787 zinc oxide Substances 0.000 abstract description 18
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000001629 suppression Effects 0.000 abstract description 3
- 230000001012 protector Effects 0.000 description 17
- 238000010276 construction Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 6
- 230000004044 response Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000001413 cellular effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 208000035126 Facies Diseases 0.000 description 2
- 206010067482 No adverse event Diseases 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
It is complete mutually from protection device, including connection midium voltage cable or the soft AGG cables of built on stilts inlet wire high pressure is departed from the utility model discloses a kind of APB, it is installed on heat explosion type automatic disengager TLQ1, TLQ2, TLQ3 on high-tension cable；One group of star-like bind mode combined arrester 2AFR1,2AFR2,2AFR3, one group of triangular form knot mode combined arrester 1AFR1,1AFR2,1AFR3.APB of the present utility model is complete mutually from disengaging protection device; compared with prior art can be whether to have overvoltage in automatic detection circuit; and pass through zinc oxide nonlinear characteristic; to prevent overvoltage from damaging the electrical equipment in system; the security of system is ensure that, the requirement of suppression system overvoltage is realized.
Description
Technical field
The utility model is related to overvoltage protection, and in particular to a kind of APB of overvoltage protection is complete mutually from disengaging protection dress
Put.
Background technology
At present, power system normally run and operating process in produced by various overvoltage, be divided into lightning surge, behaviour
Make overvoltage and normal overvoltage, harm of the overvoltage to electrical equipment is it is well known that causing the insulation of electrical equipment to add
Fast aging and puncture, expand fault harm, cause to have a power failure, or even the serious accident such as fire, while cutting off reactor, a motor
Or during transformer with inductive load, can reactor, motor or transformer alternate generation very high overvoltage, without phase
Between when protecting, overvoltage may exceed the alternate withstanding voltage of reactor, motor or transformer.Vacuum circuit breaker operating process
The middle overvoltage caused by damming, restriking, bounce, may occur at alternate, and the phase insulation of electrical equipment is threatened, because
This also requires that alternate overvoltage is protected except conventional relatively protection.
Use metal oxide arrester（MOA）Alternate overvoltage is protected, generally using 6 MOA connection schemes or 4 compositions
" four is star-like " connection scheme；
Foreign recommended and use 6 MOA connection schemes, it is domestic then largely used " four stars " attachment structure.By
In the support without actual motion, the consequence that this kind of " four stars " scheme is widely applied over nearly 30 years is that the excellent rate of accident is too high, right
The safe operation of custom system, which is brought, greatly to be threatened and hidden danger.
The work that other combined protectors have is not sufficiently stable, and some through-current capacities are small, some poor sealing performances, when have blast
Phenomenon occurs, or even leads to compared with major break down.
The content of the invention
The utility model is in view of the above-mentioned problems, provide a kind of full phases of APB from disengaging protection device, including be coupled midium voltage cable
Or the built on stilts soft AGG cables of inlet wire high pressure, it is installed on heat explosion type automatic disengager TLQ1, TLQ2, TLQ3 on high-tension cable；One group
Star-like bind mode combined arrester 2AFR1,2AFR2,2AFR3, one group of triangular form knot mode combined arrester 1AFR1,
1AFR2、1AFR3。
Further, it has been arranged in parallel respectively on described automatic disengager TLQ1, TLQ2, TLQ3 and has used conductive silicon rubber
Resistor JR1, JR2, the JR3 being made.
Further, the resistor is made ring-type, the upper and lower electrode of discharging gap be respectively placed in resistor it is upper,
Lower surface, constitutes through-flow electrical impedance at the axis of annular resistor, and automatic disengager is arranged in the bottom electrode of through-flow impedance.
Advantage of the present utility model：
A kind of APB of the present utility model is complete mutually from protection device is departed from, compared with prior art can be with automatic detection circuit
In whether have an overvoltage, and by zinc oxide nonlinear characteristic, to prevent overvoltage from damaging the electrical equipment in system,
The security of system is ensure that, the requirement of suppression system overvoltage is realized.
Without the design of the rod structure of neutral point six：
Current three-phase and four-pole combination overvoltage protector is by four zinc oxide valve plate units（Protection location）Composition
" four stars " connection, valve block unit combination of two has obtained very big reduction into phase-phase, phase-ground protection, cost, but this
" four stars " combination overvoltage protector artificially produce a neutral point, when singlephase earth fault occurs for system, due to
Voltage is asymmetrically formed " partial pressure effects ", and thermal runaway easily occurs in ungrounded facies unit, as well as this " four stars "
Connection is that two units share working voltage, can be led when a unit is damaged and mutually cause other units to damage rapidly, this chain
Reaction eventually results in phase fault so that fault spread.
APB complete is mutually six cellular constructions of MOA connection schemes six from protection device is departed from, alternate and be mutually independent complete
Whole zinc oxide valve plate unit block, all zinc oxide valve plate unit independent operatings are not in the chain effect in four-column type
Should, and presence of six cellular constructions without neutral point, it is to avoid the protector that " four stars " connection during single-phase earthing occurs for system holds
Easily occurs the hidden danger of thermal runaway.
Run on 35KV and following metal oxide arrester, its continuous running voltage, which is originally pressed, is higher than line voltage
Design is connected across phase-three groups of alternate zinc oxide valve plate units and can run steadily in the long term completely.
Gapless structure is designed：
Because thermal runaway easily occurs in zinc oxide valve plate unit caused by " four stars " structure, this kind of product must not be added without
Spark gap is protected to zinc oxide valve plate unit, the addition of spark gap, on the one hand reduces the protective value of product, separately
On the one hand cause manufacturing process complicated, the stability of product cannot be guaranteed, dispersiveness is big, and effective online prison can not be realized
Each off-line check is surveyed, actual motion fault rate is higher, and easily causes fault spread.
Using gapless structure, with following outstanding advantages：
Steep wave response characteristic is good, no wave chopping, and protection equipment is had no adverse effects.
Fast response time, discharge off time delay, response speed not nanosecond order, physical characteristic.
Having stable behavior, without the inherent shortcoming in gap, the problem of being influenceed in the absence of gap discharge voltage by internal and external environment,
Resistance to filth, and can be widely used for High aititude, high humility area.
Simple in construction, reliable, good manufacturability, it is easy to accomplish on-line monitoring and preventive trial ensure the operation safety of product
Property and reliability.
In addition to objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
Fig. 1 is that the APB of the utility model embodiment is complete mutually from disengaging protection device electrical block diagram.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit the utility model.
With reference to Fig. 1, a kind of APB as shown in Figure 1 is complete mutually from departing from protection device, including be coupled midium voltage cable or make somebody a mere figurehead into
The soft AGG cables of line high pressure, are installed on heat explosion type automatic disengager TLQ1, TLQ2, TLQ3 on high-tension cable；One group of star-like connection
Mode combined arrester 2AFR1,2AFR2,2AFR3, one group of triangular form knot mode combined arrester 1AFR1,1AFR2,
1AFR3。
The electricity being made of conductive silicon rubber is arranged in parallel on described automatic disengager TLQ1, TLQ2, TLQ3 respectively
Hinder device JR1, JR2, JR3.
Ring-type is made in the resistor, and the upper and lower electrode of discharging gap is respectively placed in the upper and lower end face of resistor, in ring
Through-flow electrical impedance is constituted at the axis of shape resistor, automatic disengager is arranged in the bottom electrode of through-flow impedance.
The utility model is by three heat-explosion type disconnectors（TLQ1~TLQ3）Overvoltage protection devices are constituted with six units, its
Elementary diagram is as shown in Figure 1.
Its structure is to eliminate ground protection cell gap with gap difference, while increased heat-explosion type disconnector,
The ground unit cancelled simultaneously, non-stop layer point is relatively small by extraneous factors such as parasitic capacitance and stray capacitances.During phase phase overvoltage
Completed by alternate protection location.It can make phase phase, phase ground power-frequency sparkover voltage by the adjustment of alternate protection location the same.
In the application of ZnO valve plate, it is intended merely to block power-frequency voltage using the purpose of series connection heat-explosion type disconnector, solves
Chargeability problem, so as to improve the performance of product.Therefore in the ground protection unit without power-frequency voltage, can all by
ZnO valve plate is constituted.If ground unit series spark gap, due to the influence in gap, the pole that will become the stability of product
Difference.Therefore in the design of gapless star connection combination overvoltage protector, alternate protection location ties mode using " △ "
Combined type.On the one hand it simplify technique, structure is become more succinct；It can also meet simultaneously and block power-frequency voltage to ZnO valves
The requirement of piece aging；On the other hand influence of the distribution capacity to gap is turn avoid, greatly improves the electricity of overvoltage protection
Gas performance：Under power frequency state, the heat-explosion type disconnector actually minimum electric capacity of only one of which capacity is at this moment only micro- in circuit
Small capacity current passes through, without current in resistance property, that is to say, that A phase, B phase, C phase supply voltage is by three heat-explosion type disconnectors
Lower end over the ground between be made up of pure MOR, under power frequency state have identical current potential.The potential difference at heat-explosion type disconnector two ends
Determined, do not influenceed by other extraneous factors by the actual power frequency state of power network completely.So, the excellent property of protector
Can and stability is just ensured that security is also greatly improved therewith, be test data more accurately and reliably, it is live
Installation is not also influenceed by position and clamp material etc..At this moment circuit structure becomes a pure broken single heat between relatively
The middle structure type of quick-fried formula disconnector, is not only simple in structure, and also provides pole for one high performance heat-explosion type disconnector of manufacture
Big convenience.
The power-frequency voltage that the alternate protection location of complete combined formula overvoltage protection device is born, is originally differed
, if simply artificially equally treated them, protection and security performance are all extremely difficult to ideal effect.Star connection and
Power-frequency voltage alternate, mutually exactly is separated to calculate, is allowed to more by delta connection combination overvoltage protector in design
Plus gear to actual circumstances, so that the protective value of whole product is greatly improved, protect multiple to reduce 20% with making phase left
The right side, alternate protection multiple reduces 50% or so, the particularly protector safety of itself and has obtained reliable guarantee.
Various overvoltage produced by the normal operation of power system and operating process, are divided into lightning surge, operated
Voltage and normal overvoltage, harm of the overvoltage to electrical equipment are it is well known that causing the insulation accelerated old of electrical equipment
Change and puncture, expand fault harm, cause the serious accidents such as power failure, or even fire, while one reactor of excision, motor or band
When having the transformer of inductive load, can reactor, motor or transformer alternate generation very high overvoltage, protected without alternate
During shield, overvoltage may exceed the alternate withstanding voltage of reactor, motor or transformer.During vacuum circuit breaker operating because
Dam, restrike, bounce caused by overvoltage, may occur at alternate, the phase insulation of electrical equipment threatened, therefore removes
Conventional relatively protection, also wants alternate overvoltage to be protected, APB is complete, and phase self-separating overvoltage protector can be done completely
Arrive.Simultaneously using heat explosion type from release unit, heat-explosion type disconnector is supporting as the full phase self-separating overvoltage protectors of APB,
It is used in series with the full phase self-separating overvoltage protectors of APB, it is active when the full phase self-separating overvoltage protector failures of APB are damaged
Work departs from, the full phase self-separating overvoltage protectors of the APB that failure is damaged in time with isolation of system and providing clear sign so that
Ensure the normal operation of system, and facilitate the lookup of trouble point and the maintenance of the full phase self-separating overvoltage protectors of APB to change.
A kind of APB of the present utility model is complete mutually from protection device is departed from, compared with prior art can be with automatic detection circuit
In whether have an overvoltage, and by zinc oxide nonlinear characteristic, to prevent overvoltage from damaging the electrical equipment in system,
The security of system is ensure that, the requirement of suppression system overvoltage is realized.
Without the design of the rod structure of neutral point six：
Current three-phase and four-pole combination overvoltage protector is by four zinc oxide valve plate units（Protection location）Composition
" four stars " connection, valve block unit combination of two has obtained very big reduction into phase-phase, phase-ground protection, cost, but this
" four stars " combination overvoltage protector artificially produce a neutral point, when singlephase earth fault occurs for system, due to
Voltage is asymmetrically formed " partial pressure effects ", and thermal runaway easily occurs in ungrounded facies unit, as well as this " four stars "
Connection is that two units share working voltage, can be led when a unit is damaged and mutually cause other units to damage rapidly, this chain
Reaction eventually results in phase fault so that fault spread.
APB complete is mutually six cellular constructions of MOA connection schemes six from protection device is departed from, alternate and be mutually independent complete
Whole zinc oxide valve plate unit block, all zinc oxide valve plate unit independent operatings are not in the chain effect in four-column type
Should, and presence of six cellular constructions without neutral point, it is to avoid the protector that " four stars " connection during single-phase earthing occurs for system holds
Easily occurs the hidden danger of thermal runaway.
Run on 35KV and following metal oxide arrester, its continuous running voltage, which is originally pressed, is higher than line voltage
Design is connected across phase-three groups of alternate zinc oxide valve plate units and can run steadily in the long term completely.
Gapless structure is designed：
Because thermal runaway easily occurs in zinc oxide valve plate unit caused by " four stars " structure, this kind of product must not be added without
Spark gap is protected to zinc oxide valve plate unit, the addition of spark gap, on the one hand reduces the protective value of product, separately
On the one hand cause manufacturing process complicated, the stability of product cannot be guaranteed, dispersiveness is big, and effective online prison can not be realized
Each off-line check is surveyed, actual motion fault rate is higher, and easily causes fault spread.
Using gapless structure, with following outstanding advantages：
Steep wave response characteristic is good, no wave chopping, and protection equipment is had no adverse effects.
Fast response time, discharge off time delay, response speed not nanosecond order, physical characteristic.
Having stable behavior, without the inherent shortcoming in gap, the problem of being influenceed in the absence of gap discharge voltage by internal and external environment,
Resistance to filth, and can be widely used for High aititude, high humility area.
Simple in construction, reliable, good manufacturability, it is easy to accomplish on-line monitoring and preventive trial ensure the operation safety of product
Property and reliability.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (3)
1. a kind of APB is complete mutually from disengaging protection device, it is characterised in that soft including being coupled midium voltage cable or built on stilts inlet wire high pressure
AGG cables, are installed on heat explosion type automatic disengager TLQ1, TLQ2, TLQ3 on high-tension cable；One group of star-like bind mode combination
Formula arrester 2AFR1,2AFR2,2AFR3, one group of triangular form knot mode combined arrester 1AFR1,1AFR2,1AFR3.
2. APB according to claim 1 is complete mutually from disengaging protection device, it is characterised in that described automatic disengager
Resistor JR1, JR2, the JR3 being made of conductive silicon rubber are arranged in parallel on TLQ1, TLQ2, TLQ3 respectively.
3. APB according to claim 2 is complete mutually from disengaging protection device, it is characterised in that ring-type is made in the resistor,
The upper and lower electrode of discharging gap is respectively placed in the upper and lower end face of resistor, and through-flow resistance is constituted at the axis of annular resistor
Anti-, automatic disengager is arranged in the bottom electrode of through-flow impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720020612.6U CN206602358U (en) | 2017-01-09 | 2017-01-09 | A kind of APB is complete mutually from disengaging protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720020612.6U CN206602358U (en) | 2017-01-09 | 2017-01-09 | A kind of APB is complete mutually from disengaging protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206602358U true CN206602358U (en) | 2017-10-31 |
Family
ID=60148706
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720020612.6U Expired - Fee Related CN206602358U (en) | 2017-01-09 | 2017-01-09 | A kind of APB is complete mutually from disengaging protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206602358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879641A (en) * | 2018-08-16 | 2018-11-23 | 安徽新在线科技股份有限公司 | A kind of full phase self-separating overvoltage protector of APB |
-
2017
- 2017-01-09 CN CN201720020612.6U patent/CN206602358U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108879641A (en) * | 2018-08-16 | 2018-11-23 | 安徽新在线科技股份有限公司 | A kind of full phase self-separating overvoltage protector of APB |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |