CN104332961A - Burning proof protection device for switch opening and closing coil - Google Patents
Burning proof protection device for switch opening and closing coil Download PDFInfo
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- CN104332961A CN104332961A CN201410612357.5A CN201410612357A CN104332961A CN 104332961 A CN104332961 A CN 104332961A CN 201410612357 A CN201410612357 A CN 201410612357A CN 104332961 A CN104332961 A CN 104332961A
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- switch
- divide
- shut brake
- protection
- loop
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Abstract
The invention discloses a burning proof protection device for a switch opening and closing coil. The burning proof protection device for the switch opening and closing coil comprises a protection switch, a current sampling element, a current distinguish circuit, a delay unit, a fault judgment circuit and a switch driving element which are sequentially in series connection and form into a protection loop; an input end of the protection switch and an output end of the current sampling unit are respectively connected with the opening and closing coil requiring burning proof protection to enable the protection loop to be in tandem connection with an opening and closing coil loop. The burning proof protection device for the switch opening and closing coil also comprises a working power supply which supplies power for the protection loop and a state indication which is used for warning; the state warning comprises a power supply indicating lamp and a fault indicating lamp; the current sampling element adopts a hall sensor; the protection switch adopts an electronic power switch. The burning proof protection device for the switch opening and closing coil is compact in structure, small in size, convenient to assemble, enables a circuit to be reliably and thoroughly cut, avoids the opening and closing coil from being burnt, has a protection function and an effective monitoring function on the opening and closing coil loop, has corresponding warning indication when a protection action acts and is convenient for a maintainer to check and maintain.
Description
Technical field
The present invention relates to a kind of electric system protection device, particularly relate to a kind of switch divide-shut brake coil burn-out-proof protective device, belong to field of relay protection in power, specifically to the secondary circuit protective device that high-voltage circuit breaker, closing coil are protected.
Background technology
Primary cut-out point, often to occur in closing operation process point, the accident of Burnout of Closing Coil.As everyone knows, point, closing coil all according to the short time energising design, it can not be energized for a long time.Point, the burning mainly due to faults such as circuit breaker auxiliary contact, circuit breaker electric magnetic mechanisms of closing coil, and circuit breaker is divided, the electric current in closing coil loop can not obtain that normal cutoff causes in time.
Although the circuit breaker that current domestic electrical system uses deciliter, lock wire loop have some protections and the measures monitored, these measures or simple and incomplete supervision can only be provided, but do not possess defencive function; Although there is protection function for monitoring, because design is too complicated, cause inconvenience is installed and reliability not high.
Summary of the invention
Main purpose of the present invention is, overcomes deficiency of the prior art, provides a kind of switch divide-shut brake coil burn-out-proof protective device of new structure, is specially adapted to carry out burn-out-proof protection to high-voltage circuit-breaker switching on-off coil.
Technical problem to be solved by this invention is to provide compact conformation, compact, installs convenience, dependable performance, cost of manufacture switch divide-shut brake coil burn-out-proof protective device low, applied widely additional, not only circuit cuts off thoroughly reliable, divide-shut brake coil scaling loss can be avoided to damage, possess defencive function; And possess effective function for monitoring is carried out to divide-shut brake wire loop, protection act has corresponding alarm to indicate, and facilitates maintainer's maintenance and inspection, thus ensures the normal operation of electrical power distribution electric system; Has the value in industry.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of switch divide-shut brake coil burn-out-proof protective device, comprises and connects successively and form the protection switch of protective loop, current sampling element, current judgement circuit, delay unit, fault judging circuit and switch drive element.
Wherein, the input of described protection switch is connected with the divide-shut brake coil needing burn-out-proof to protect respectively with the output of current sampling unit, realizes protective loop serial connection to divide-shut brake wire loop; Described current sampling element adopts Hall element; Described protection switch adopts electronic power switch.
Meanwhile, also comprise the working power of powering for protective loop and indicate for the state of alarm, described state instruction comprises power supply indicator, malfunction indicator lamp.
The present invention is set to further: described protection switch is connected to for the protection of being loss protecting element that divide-shut brake coil provides burn-out-proof to protect during the dead electricity of loop.
The present invention is further set to: described loss protecting element is one group of mechanical protection switch, and when described mechanical protection switch breaks down for the protection of loop working power used, operating personnel carry out normal breaking-closing operating.
The present invention is further set to: described mechanical protection switch comprises two groups of circuit-closing contacts, and wherein one group of circuit-closing contacts is used for being connected with divide-shut brake coil, and another group circuit-closing contacts is used for indicating with state being connected.
The present invention is further set to: when described state instruction also comprises protection switch cut-out divide-shut brake wire loop, can be driven the alarm window lighted and the remote signalling input circuit driven by telemechanical apparatus.
The present invention is further set to: described power supply indicator is the green indicating lamp that display power supply normally runs.
The present invention is further set to: described malfunction indicator lamp is the red led that display protection switch cuts off divide-shut brake wire loop.
Operation principle of the present invention is: when the divide-shut brake wire loop of the switches such as primary cut-out breaks down and can not cut off breaking-closing operating electric current in time time, protective device is not through current sampling, current judgement, after the delay time adjusted arrives, electric current still disappears, namely confirm that divide-shut brake wire loop breaks down, just driving electronic power switch to cut off the electric current of divide-shut brake wire loop by driving element immediately, guaranteeing that divide-shut brake coil can not burn because being energized for a long time; Send signal designation while cutting off, the malfunction indicator lamp cutting off divide-shut brake wire loop for showing protection switch is lit.
Protective device of the present invention additionally provides the divide-shut brake coil protect measure of protective device self dead electricity situation; specific requirement does not affect the normal breaking-closing operating of switch when situations such as protective device generation power failures, by connecing one group of mechanical protection switch and realize on the electronic power switch of protective device.When protective device normally works, mechanical protection switch disconnects and does not affect the normal defencive function of protective device; When there is the situation of the cisco unity malfunctions such as power failure when protective device; mechanical protection switch then closes; wherein mechanical protection switch comprises two groups of circuit-closing contacts; it is normal that one group circuit-closing contacts makes the loop of switch divide-shut brake coil connect; do not affect the normal separating brake of operating personnel and closing operation, another group circuit-closing contacts is then lighted alarm window or is driven the states such as the remote signalling input circuit of telemechanical apparatus to indicate demand.
Compared with prior art, beneficial effect of the present invention has:
1, protective device and divide-shut brake wire loop series connection structure, install additional conveniently, Installation and Debugging are easy, are also conducive to changing; More importantly failure of current is reliably thorough, divide-shut brake coil scaling loss can be avoided to damage, possess defencive function.
2, use the high voltage direct current operating current of Hall element to divide-shut brake wire loop to sample, guarantee that sampling is reliable, greatly expand the adaptation occasion of protective device simultaneously.
3, use electronic power switch device as the protection switch of disengagement failure divide-shut brake wire loop DC operation electric current, volume, the implementation structure that not only can reduce protective device are compact, and improve protective device reliability, increase the service life.
4, possess effective function for monitoring is carried out to divide-shut brake wire loop; protection act has corresponding alarm to indicate; facilitate maintainer's maintenance and inspection; save manpower required when fixing a breakdown in a large number and the time of handling failure; simultaneous faults can ensure accurate trip protection when occurring; avoid failure propagation, greatly shorten interruption duration, create excellent Social benefit and economic benefit.
5, possess loss protecting function, make divide-shut brake coil obtain more fully reliably protecting; And adopt the optional measure of delay time to meet the requirement of different switch divide-shut brake coil, expand the scope of application.
Foregoing is only the general introduction of technical solution of the present invention, and in order to clearer understanding technological means of the present invention, below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of switch divide-shut brake coil burn-out-proof protective device of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, a kind of switch divide-shut brake coil burn-out-proof protective device, comprises and connects successively and form the protection switch of protective loop, current sampling element, current judgement circuit, delay unit, fault judging circuit and switch drive element.
Wherein, the input of described protection switch is connected with the divide-shut brake coil needing burn-out-proof to protect respectively with the output of current sampling unit, realizes protective loop serial connection to divide-shut brake wire loop; Described current sampling element adopts Hall element; Described protection switch adopts electronic power switch.
Meanwhile, also comprise the working power of powering for protective loop and indicate for the state of alarm, described state instruction comprises power supply indicator, malfunction indicator lamp; Described power supply indicator is the green indicating lamp that display power supply normally runs; Described malfunction indicator lamp is the red led that display protection switch cuts off divide-shut brake wire loop.When described state instruction also comprises protection switch cut-out divide-shut brake wire loop, the alarm window lighted and the remote signalling input circuit driven by telemechanical apparatus can be driven.
When switch divide-shut brake wire loop due to reasons such as mechanical breakdowns can not in time cut-off loop operating current time, protective device is after current sampling, differentiation, time delay, fault distinguishing, as, electric current rear in the delay time arrival of adjusting still do not disappear, namely confirm that divide-shut brake wire loop breaks down, just electronic power switch is driven to cut off the electric current of divide-shut brake wire loop by driving element immediately, make divide-shut brake coil be unlikely to long-time energising and burn, thus protect divide-shut brake coil; While the electronic power switch cut-out divide-shut brake wire loop operating current of protective device; light the red led for showing dissengaged positions be installed on protective device panel; and drive relay to light alarm window or drive the remote signalling input circuit of telemechanical apparatus; to represent that fault has appearred in certain switch switching winding or closing coil loop, be convenient to field personnel and search in time and fix a breakdown.
In order to ensure not affect the normal breaking-closing operating of switch when situations such as protective device generation power failures, described protection switch is connected to for the protection of being loss protecting element that divide-shut brake coil provides burn-out-proof to protect during the dead electricity of loop; Described loss protecting element is one group of mechanical protection switch.
When protective device normally works, mechanical protection switch disconnects and does not affect the normal defencive function of protective device; When there is the situation of the cisco unity malfunctions such as power failure when protective device, mechanical protection switch then closes.Described mechanical protection switch comprises two groups of circuit-closing contacts; wherein one group of circuit-closing contacts makes the loop of switch divide-shut brake coil connect normally; do not affect the normal separating brake of operating personnel and closing operation, another group circuit-closing contacts is then lighted alarm window or is driven the states such as the remote signalling input circuit of telemechanical apparatus to indicate demand.
In relay protection of power system and automatic control system, the collection of electric parameter samples the link that is absolutely necessary, and is also the important step affecting protective device overall performance simultaneously.Protective device of the present invention adopts the operating current of Hall element to divide-shut brake wire loop to sample; solve isolating problem during direct current parameter sampling and measuring on the one hand; on the other hand due to advantages such as Hall element volume are little, the linearity is good, the range of linearity is wide, accommodation and the applicable situation of protective device are greatly expanded.
The switch of the various signal of traditional cut-out all adopts the method for mechanical relay, although use, mechanical relay cost is lower, drive circuit is simple, but the contact rating of relay and relay volume are conflicts when cutoff high direct current, general volume more greatly, not easily site installation test, and be easy to stick together in the moment of cut-off loop and cannot cut off due to the effect relay tip of arcing.Protective device of the present invention adopts high-tension electricity electronic switch to carry out the DC operation electric current of disengagement failure wire loop.Electronic power switch is utilized not have mechanical contact; phenomenon of arc discharge is not had when cutoff high signal; therefore; just hundreds of and even upper kilowatt direct current power can be cut off reliably with the electronic power switch of very little volume; what not only make the volume of protective device do is very little; the reliability of protective device is largely increased, has also greatly expanded the accommodation of protective device.
The accessible technical indicator of protective device of the present invention: power supply input range test can meet rated voltage ± 20% area requirement; Device withstand voltage properties test for 2000V, 1 minute; The maximum current born is not less than 5A; The pressure drop of maximum current timer is not more than 1.5V; The time of time delay and precision be respectively 0.1 second-0.5 second 5 grades of optional, precision be better than ± 5%; Interference free performance test shows as controlled wire loop applying interference small area analysis, device is reliably failure to actuate.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (7)
1. a switch divide-shut brake coil burn-out-proof protective device, is characterized in that: comprise and connect successively and form the protection switch of protective loop, current sampling element, current judgement circuit, delay unit, fault judging circuit and switch drive element;
The input of described protection switch is connected with the divide-shut brake coil needing burn-out-proof to protect respectively with the output of current sampling unit, realizes protective loop serial connection to divide-shut brake wire loop;
Also comprise the working power of powering for protective loop and indicate for the state of alarm, described state instruction comprises power supply indicator, malfunction indicator lamp;
Described current sampling element adopts Hall element; Described protection switch adopts electronic power switch.
2. switch divide-shut brake coil burn-out-proof protective device according to claim 1, is characterized in that: described protection switch is connected to for the protection of being loss protecting element that divide-shut brake coil provides burn-out-proof to protect during the dead electricity of loop.
3. switch divide-shut brake coil burn-out-proof protective device according to claim 2; it is characterized in that: described loss protecting element is one group of mechanical protection switch, and when described mechanical protection switch breaks down for the protection of loop working power used, operating personnel carry out normal breaking-closing operating.
4. switch divide-shut brake coil burn-out-proof protective device according to claim 3; it is characterized in that: described mechanical protection switch comprises two groups of circuit-closing contacts; wherein one group of circuit-closing contacts is used for being connected with divide-shut brake coil, and another group circuit-closing contacts is used for indicating with state being connected.
5. switch divide-shut brake coil burn-out-proof protective device according to claim 1; it is characterized in that: when described state instruction also comprises protection switch cut-out divide-shut brake wire loop, can the alarm window lighted and the remote signalling input circuit driven by telemechanical apparatus be driven.
6. switch divide-shut brake coil burn-out-proof protective device according to claim 1, is characterized in that: described power supply indicator is the green indicating lamp that display power supply normally runs.
7. switch divide-shut brake coil burn-out-proof protective device according to claim 1, is characterized in that: described malfunction indicator lamp is the red led that display protection switch cuts off divide-shut brake wire loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612357.5A CN104332961A (en) | 2014-11-04 | 2014-11-04 | Burning proof protection device for switch opening and closing coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612357.5A CN104332961A (en) | 2014-11-04 | 2014-11-04 | Burning proof protection device for switch opening and closing coil |
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| Publication Number | Publication Date |
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| CN104332961A true CN104332961A (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410612357.5A Pending CN104332961A (en) | 2014-11-04 | 2014-11-04 | Burning proof protection device for switch opening and closing coil |
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| CN (1) | CN104332961A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098735A (en) * | 2015-08-25 | 2015-11-25 | 国家电网公司 | Breaking-closing coil protection device |
| CN105978422A (en) * | 2016-06-07 | 2016-09-28 | 中国南方航空工业(集团)有限公司 | Control device for helicopter AC power supply system |
| CN106483423A (en) * | 2016-12-05 | 2017-03-08 | 山东钢铁股份有限公司 | A kind of trouble shoot method and device of breaker open operation electric loop |
| CN106531569A (en) * | 2016-11-16 | 2017-03-22 | 国网上海市电力公司 | Anti-burning device for opening-closing coil |
| CN108599112A (en) * | 2018-06-01 | 2018-09-28 | 国网安徽省电力有限公司阜阳供电公司 | A kind of tripping coil driving circuit protective relaying device |
| CN113130266A (en) * | 2021-04-20 | 2021-07-16 | 广东电网有限责任公司 | Protection system and circuit breaker of circuit breaker divide-shut brake coil |
| CN113746067A (en) * | 2021-08-27 | 2021-12-03 | 南方电网科学研究院有限责任公司 | Protection device of GIS opening and closing coil |
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| CN2290136Y (en) * | 1997-03-17 | 1998-09-02 | 罗昌林 | On-off coil protector for circuit braker |
| CN201138748Y (en) * | 2007-12-15 | 2008-10-22 | 东营供电公司 | Protecting equipment for electric power secondary circuit tripping and closing coil |
| CN202930926U (en) * | 2012-12-13 | 2013-05-08 | 浙江省电力公司台州电业局 | Switch coil protector |
| CN103336474A (en) * | 2013-06-28 | 2013-10-02 | 沈阳工业大学 | Control device and method for vacuum circuit breaker permanent magnetic mechanism based on double signal tracking |
| CN104037727A (en) * | 2014-06-20 | 2014-09-10 | 北方重工集团有限公司 | Control protection method for high-voltage electric equipment in outage |
| CN204243738U (en) * | 2014-11-04 | 2015-04-01 | 国家电网公司 | Switch divide-shut brake coil burn-out-proof protective device |
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2014
- 2014-11-04 CN CN201410612357.5A patent/CN104332961A/en active Pending
Patent Citations (6)
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| CN2290136Y (en) * | 1997-03-17 | 1998-09-02 | 罗昌林 | On-off coil protector for circuit braker |
| CN201138748Y (en) * | 2007-12-15 | 2008-10-22 | 东营供电公司 | Protecting equipment for electric power secondary circuit tripping and closing coil |
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| CN103336474A (en) * | 2013-06-28 | 2013-10-02 | 沈阳工业大学 | Control device and method for vacuum circuit breaker permanent magnetic mechanism based on double signal tracking |
| CN104037727A (en) * | 2014-06-20 | 2014-09-10 | 北方重工集团有限公司 | Control protection method for high-voltage electric equipment in outage |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098735A (en) * | 2015-08-25 | 2015-11-25 | 国家电网公司 | Breaking-closing coil protection device |
| CN105978422A (en) * | 2016-06-07 | 2016-09-28 | 中国南方航空工业(集团)有限公司 | Control device for helicopter AC power supply system |
| CN105978422B (en) * | 2016-06-07 | 2019-01-25 | 中国南方航空工业(集团)有限公司 | Helicopter AC power-supply system control device |
| CN106531569A (en) * | 2016-11-16 | 2017-03-22 | 国网上海市电力公司 | Anti-burning device for opening-closing coil |
| CN106483423A (en) * | 2016-12-05 | 2017-03-08 | 山东钢铁股份有限公司 | A kind of trouble shoot method and device of breaker open operation electric loop |
| CN106483423B (en) * | 2016-12-05 | 2023-06-30 | 山东钢铁股份有限公司 | Fault searching method and device for breaker opening electric loop |
| CN108599112A (en) * | 2018-06-01 | 2018-09-28 | 国网安徽省电力有限公司阜阳供电公司 | A kind of tripping coil driving circuit protective relaying device |
| CN113130266A (en) * | 2021-04-20 | 2021-07-16 | 广东电网有限责任公司 | Protection system and circuit breaker of circuit breaker divide-shut brake coil |
| CN113746067A (en) * | 2021-08-27 | 2021-12-03 | 南方电网科学研究院有限责任公司 | Protection device of GIS opening and closing coil |
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Application publication date: 20150204 |