CN204694796U - Surge arrester failure indicating device - Google Patents
Surge arrester failure indicating device Download PDFInfo
- Publication number
- CN204694796U CN204694796U CN201520403570.5U CN201520403570U CN204694796U CN 204694796 U CN204694796 U CN 204694796U CN 201520403570 U CN201520403570 U CN 201520403570U CN 204694796 U CN204694796 U CN 204694796U
- Authority
- CN
- China
- Prior art keywords
- inductor
- lightning arrester
- indicator
- indicating device
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims abstract description 6
- 230000000994 depressogenic effect Effects 0.000 claims abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Surge arrester failure indicating device.Provide one and realize visualizing management, production cost is low, improves the surge arrester failure indicating device of electric power safety, reliability.Comprise inductor, support and indicator, described support is fixedly connected on the rear end cap of lightning arrester, described inductor is located on described support and the induction contact of described inductor is depressed on the outer wall of described lightning arrester in advance, described inductor connects described indicator, described indicator is connected on the voltage sensor of epoxy bushing by connection line, described support is L shape, is provided with fixed orifice and some adjustment holes, and described inductor adopts travel switch.When the utility model uses, after lightning arrester is breakdown, disconnector departs from, and drive rear end cap to come off, final TouchSensor, make the railway superstructures loop of LED4, LED4 lamp is bright, realizes the visual of fault, and energy isolated fault in time, improves circuit reliability.
Description
Technical field
The utility model relates to field of electrical equipment, particularly relates to a kind of surge arrester failure indicating device.
Background technology
The ring main unit that the electric power system distribution of urban adopts is generally with the 10kV outdoor common box type ring main unit of SF6 on-load switch composition, for a deciliter load current, cut-offfing short-circuit current and no-load transformer electric current, is the important switchgear that ring network power supply and terminal are powered.10kV outdoor box ring main unit, also known as ring network power supplying units (abbreviation ring main unit), each ring main unit is total to case by 3 to 6 way switch and forms, and the mode of connection is versatile and flexible, can meet the demand of different distribution network node.Switchgear and hard bus are enclosed in same stainless steel metal shell, adopt SF6 as arc-extinguishing medium and insulating medium, and switch adopts on-load switch or the isolating switch of three-phase ganged, and its rated current is 630A, and KA Rms can reach 20kA/3S.
Due to this special arrangement architecture, ring main unit is connected with cable and adopts shielded cable terminal plug to install with ring main unit coupling box the form be connected.Usually in the incoming line cabinet side of ring main unit, install one be assembled in shield type after the lightning arrester of plug-in cable terminating plug inside make it encroach on from superpotential for the protection of the SF6 on-load switch of ring main unit and power cable.
The controller switching equipments such as lightning arrester can discharge thunder and lightning or switching overvoltage energy, protection ring main unit endanger from instantaneous overvoltage, can block again afterflow, the unlikely protective device causing system short-circuit, earth fault to occur.The lightning arrester installed in ring main unit is usually connected to live wire and protected equipment closely cooperates.When overvoltage value reaches the operation voltage of regulation, lightning arrester is action immediately, flows through electric charge, over-voltage amplitude, and proterctive equipment insulate; After magnitude of voltage is normal, lightning arrester restores to the original state rapidly again, to ensure system normal power supply.
Metal oxide arrester (MOA) is widely used in distribution net equipment because of its superior overvoltage protection characteristic; but the fault of MOA may cause it to explode; and involve the 10kV outdoor ring main unit coordinated with it, jeopardize and affect power distribution system secure operation.Therefore lightning arrester is provided with disconnector.Disconnector is as lightning arrester ancillary attachment, connect with lightning arrester and use, its objective is when abnormal breaking down appears in lightning arrester, utilize power frequency short-circuit current by disconnector action, disconnector earth terminal is thrown off automatically, lightning arrester Accident prevention out of service expands further, and departs from mark to the lightning arrester that is out of order with observability, is convenient to maintainer's Timeliness coverage trouble spot and carries out safeguarding and changing.And when lightning arrester is in normal operating conditions; disconnector is failure to actuate and is Low ESR (compared with lightning arrester); the not protection feature of the former duty of influential system and lightning arrester, ensures uninterrupted power supply, makes lightning arrester really reach " non-maintaining " request for utilization.
Current distribution co-box type looped net cabinet only or cable branch box, cable vault adopts full-closed structure for preventing internal fault from injuring staff, in cable vault, the action situation of disconnector cannot intuitively be seen, therefore after disconnector comes off, be difficult to intuitively, timely find fault, affect Electrical Safety.And in prior art, though there is on-line monitoring technique, its cost of investment is high, the shortcomings such as maintenance cost is high.Owing to being high-tension electricity in distribution, monitor the operation conditions of lightning arrester according to display or signalling means (this is 220V voltage), how power taking is also technological difficulties.
Utility model content
The utility model is for above problem, and provide one and realize visualizing management, production cost is low, improves the surge arrester failure indicating device of electric power safety, reliability.
The technical solution of the utility model is: comprise inductor, support and indicator, described support is fixedly connected on the rear end cap of lightning arrester, described inductor is located on described support and the induction contact of described inductor is depressed on the outer wall of described lightning arrester in advance, and described inductor connects described indicator;
Described indicator is connected on the voltage sensor of epoxy bushing by connection line.
Described support is L shape, is provided with fixed orifice and some adjustment holes.
Described inductor adopts travel switch.
Described voltage sensor connects A phase, B phase and C circuitry phase respectively, described connection line comprises current-limiting resistance R10, LED 4 and signal location contact S1, the two ends of LED 4 connect current-limiting resistance R10 and signal location contact S1 respectively, the other end ground connection of signal location contact S1, the other end of current-limiting resistance R10 is connected with A phase, B phase and C circuitry phase respectively, forms discharge loop one, discharge loop two and discharge loop three.
When the utility model uses, after lightning arrester is breakdown, disconnector departs from, and drive rear end cap to come off, final TouchSensor, make the railway superstructures loop of LED4, LED4 lamp is bright, realizes the visual of fault, and energy isolated fault in time, improves circuit reliability.Indicator is connected on power taking on voltage sensor simultaneously, forms three loops, any one when having electricity mutually, the duty of the disconnector of lightning arrester is all monitored by LED4, judge whether lightning arrester exists fault, improve reliability of the present utility model, guarantee the security of electric system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model,
Fig. 2 is the structural representation of Fig. 1 medium-height trestle,
Fig. 3 is circuit diagram of the present utility model,
Fig. 4 is the circuit diagram under the utility model using state,
Fig. 5 is that the utility model uses reference diagram;
In figure, 1 is inductor, and 11 is induction contact, and 2 is supports, 21 is fixed orifices, and 22 is adjustment holes, and 3 is indicators, 4 is lightning arresters, and 41 is rear end caps, and 42 is disconnectors, 5 is ring main unit gas storehouse housings, 6 is discharge loops one, and 7 is discharge loops two, and 8 is discharge loops three, 9 is epoxy bushings, and 91 is voltage sensors.
Embodiment
The utility model as Figure 1-5, comprise inductor 1, support 2 and indicator 3, described support 2 is fixedly connected on the rear end cap 41 of lightning arrester 4, described inductor 1 is located on described support 2 and the induction contact 11 of described inductor 1 is depressed on the outer wall of described lightning arrester 4 in advance, and described inductor 1 connects described indicator 3;
Described indicator 3 is connected on the voltage sensor 91 of epoxy bushing 9 by connection line.
Described support 2 is L shape, is provided with fixed orifice 21 and some adjustment holes 22, is applicable to the lightning arrester of different inductors and outer wall difformity and gradient, guarantees that the induction contact of described inductor compresses described lightning arrester outer wall by described adjustment hole 22.
Described inductor 1 adopts travel switch, when ensureing induced signal fiduciary level, reduces production cost.
Described voltage sensor 91 connects A phase, B phase and C circuitry phase respectively, described connection line comprises current-limiting resistance R10, LED 4 and signal location contact S1, the two ends of LED 4 connect current-limiting resistance R10 and signal location contact S1 respectively, the other end ground connection of signal location contact S1, the other end of current-limiting resistance R10 is connected with A phase, B phase and C circuitry phase respectively, forms discharge loop 1, discharge loop 27 and discharge loop 38.
Principle of work of the present utility model is: epoxy bushing 9 is arranged on ring main unit gas storehouse housing 5, voltage sensor 91 is located in epoxy bushing 9, the circuit of indicator 3 turns on voltage sensor 91, after lightning arrester is breakdown, as shown in Figure 5, the disconnector of lightning arrester afterbody comes off, thus drive the rear end cap of lightning arrester to come off, resulting belt is moved the relative lightning arrester of inductor and is found to come off or offset phenomena, i.e. signal location contact S1 closed (as shown in Figure 4), thus signal transmission is to indicator, make the lamp on indicator bright.
The power source of the indicator in the utility model is then be connected with capacitive voltage sensor by indicator, connection as shown in Figure 3, for A phase: when circuit high voltage capacitive battery pressure sensor in epoxy resin bushing, secondary voltage is provided, charge to electric capacity C4 through half-wave rectification, when reaching discharge tube ZM1 release voltage value, hold the fault offset gathered to LED 1 electric capacity C4, thus lamp is bright, electric discharge terminates back light and extinguishes, discharge tube ZM1 recovers threshold, waits for and discharging next time.Principle of work and the A of B phase and C phase are similar, do not repeat to repeat at this.The hard contact that common extraction section energy is provided by inductor in the discharge loop of A phase or B phase or C phase forms loop, any one when having electricity mutually, the duty of the disconnector of lightning arrester is all monitored by LED4, judge whether lightning arrester exists fault, when namely breaking down, LED4 lights, otherwise LED4 does not work.
Claims (4)
1. surge arrester failure indicating device, it is characterized in that, comprise inductor, support and indicator, described support is fixedly connected on the rear end cap of lightning arrester, described inductor is located on described support and the induction contact of described inductor is depressed on the outer wall of described lightning arrester in advance, and described inductor connects described indicator;
Described indicator is connected on the voltage sensor of epoxy bushing by connection line.
2. surge arrester failure indicating device according to claim 1, is characterized in that, described support is L shape, is provided with fixed orifice and some adjustment holes.
3. surge arrester failure indicating device according to claim 1, is characterized in that, described inductor adopts travel switch.
4. surge arrester failure indicating device according to claim 1, it is characterized in that, described voltage sensor connects A phase, B phase and C circuitry phase respectively, described connection line comprises current-limiting resistance R10, LED 4 and signal location contact S1, the two ends of LED 4 connect current-limiting resistance R10 and signal location contact S1 respectively, the other end ground connection of signal location contact S1, the other end of current-limiting resistance R10 is connected with A phase, B phase and C circuitry phase respectively, forms discharge loop one, discharge loop two and discharge loop three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520403570.5U CN204694796U (en) | 2015-06-11 | 2015-06-11 | Surge arrester failure indicating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520403570.5U CN204694796U (en) | 2015-06-11 | 2015-06-11 | Surge arrester failure indicating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204694796U true CN204694796U (en) | 2015-10-07 |
Family
ID=54235072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520403570.5U Active CN204694796U (en) | 2015-06-11 | 2015-06-11 | Surge arrester failure indicating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204694796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727977A (en) * | 2017-11-18 | 2018-02-23 | 广东电网有限责任公司清远供电局 | The overvoltage protection device wireless monitoring device that a kind of band logical severed finger shows |
-
2015
- 2015-06-11 CN CN201520403570.5U patent/CN204694796U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727977A (en) * | 2017-11-18 | 2018-02-23 | 广东电网有限责任公司清远供电局 | The overvoltage protection device wireless monitoring device that a kind of band logical severed finger shows |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101505053A (en) | User demarcation circuit breaker set apparatus and protection method | |
| EP4046249A1 (en) | High voltage overhead electric transmission line equipped with switchgear unit | |
| CN2884641Y (en) | Overvoltage limit and small current earthing selective integrator of power transfer and distribution system | |
| CN205620504U (en) | 10 passive warning monitoring arrangement of kilovolt arrester insulation breakdown | |
| CN102290805A (en) | Electric arc grounding overvoltage limiting device applied to medium-voltage distribution system | |
| CN208401544U (en) | A kind of over-voltage protector of energy-absorbing cumulative | |
| CN204694796U (en) | Surge arrester failure indicating device | |
| CN201877234U (en) | Detachable lightning arrester | |
| CN203086121U (en) | Falling type lightning arrester structure | |
| CN202513569U (en) | Transformer neutral point overvoltage protector | |
| CN202535046U (en) | Microcomputer monitoring and protection device for mine-used high-voltage switch | |
| CN204694795U (en) | Surge arrester failure indicating circuit | |
| CN212543182U (en) | Compact transformer substation | |
| CN201887444U (en) | Electric grounding comprehensive protector for TXHPT | |
| CN210693223U (en) | Voltage transformer isolation combination device applied to uninterrupted operation | |
| CN203595776U (en) | Lightning stroke fault protection and monitoring system | |
| CN203193273U (en) | Intelligent turn-adjustment arc-extinguishing voltage-limiting device | |
| CN2559153Y (en) | Arc-extinguishing and overvoltage protection device | |
| CN201388042Y (en) | Central high-voltage switch equal-height cabinet | |
| CN204651113U (en) | Lightning arrester | |
| CN204464778U (en) | Be applicable to the high-voltage electric device of ring network power supply system | |
| CN205070286U (en) | Distribution looped netowrk PT cabinet | |
| CN201387999Y (en) | Central high-low cabinet type intelligent arc extinction, harmonic elimination and route selection device | |
| CN203135434U (en) | Neutral point virtual grounding device | |
| CN208337124U (en) | A kind of over-voltage protector remove-insurance state device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |