CN201846069U - Arc light protector - Google Patents
Arc light protector Download PDFInfo
- Publication number
- CN201846069U CN201846069U CN2010205753989U CN201020575398U CN201846069U CN 201846069 U CN201846069 U CN 201846069U CN 2010205753989 U CN2010205753989 U CN 2010205753989U CN 201020575398 U CN201020575398 U CN 201020575398U CN 201846069 U CN201846069 U CN 201846069U
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- Prior art keywords
- arclight
- arc light
- signal
- protective device
- bus
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- Expired - Fee Related
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Abstract
The utility model discloses an arc light protector which comprises an overcurrent detecting unit used for sending an overcurrent comparison signal after comparing the detected output current of a current transformer connected to an incoming line positioned connected between a power supply and a bus or a feed line positioned between the bus and a switching device with a setting current, an arc light sensor used for detecting the arc light in a switch cabinet and sending the arc light detection signal, an arc light detection auxiliary unit used for collecting and sending the arc light detection signal, a main unit used for sending a tripping signal as per the received overcurrent comparison signal sent by the overcurrent detecting unit and the arc light detection signal sent by the arc light detection auxiliary unit, and a circuit breaker used for disconnecting the electrical connection between the switching device and the bus as per the received tripping signal. The arc light protector provided by the utility model has simple principle, acts quickly and reliably, and ensures the safety of the working personnel and distributing equipment; and the failure can be ablated quickly.
Description
Technical field
The utility model relates to arclight protection field, relates in particular to a kind of arclight protective device that is used for switch cubicle.
Background technology
As everyone knows, the inner arc light short trouble of switch cubicle is a kind of very serious fault in the distribution system, and its destructive power is quite big.The arc burning that occurs in switch cubicle inside discharges huge energy, makes the electric arc temperature inside may reach several thousand degrees centigrade, thereby seriously burns expensive switchgear.And the short-circuit current rush that produces when arc burning can damage main transformer, causes long-time power failure.The more serious human casualty accident that also can cause near staff.
At present, as long as mesolow switch cubicle in actual motion and busbar fault protection scheme have following three kinds:
(1) transformer reserve overcurrent protection scheme.This is the at present domestic most widely used middle bus protection scheme of pressing.Because the operation time limit of main transformer backup protection must cooperate so that selectivity to be provided by the ladder principle with the overcurrent protection of outlet and block switch; thereby adopt mute time of busbar fault of this protection scheme long; protection is generally adjusted and to be 1.5-2.0 second the trip time, have in addition reach 2.0-2.6 second.Obviously it far can not satisfy the requirement of pressing busbar fault in 100 milliseconds in the quick excision.
(2) feeder line overcurrent protection locking transformer overcurrent protection scheme.This is that the responsiveness of this protection scheme improves along with the extensive use of microcomputer overcurrent protection in recent years at middle pressure feeder line, reaches the 300-400 millisecond, but it still can not satisfy the requirement of 100 milliseconds of excision middle voltage bus bar faults.
(3) the high impedance bus protection scheme of employing circulation principle.This is the bus protection scheme of pressing in a kind of special-purpose current differential, adopts sometimes in some big event abroad.The typical action time of this protection is 35 milliseconds-60 milliseconds, and this is faster than above-mentioned two kinds of schemes, and total fault clearance time about about 100 milliseconds, is satisfied the requirement of action rapidity greatly basically.But the protection range of this protection scheme is restricted owing to the restriction that is subjected to the current transformer installation site makes protection range, can not protect the cable joint part of cable vault, and this place is the higher place of fault probability.Reasons such as in addition, this protection scheme is because the wiring complexity, and the requirement height to current transformer can not provide fault location, and is installed on the bus of 6-35 kilovolt a lot of difficulties are arranged, and is also very uneconomical, thereby also be not suitable for the middle voltage bus bar protection and use.
Therefore, be necessary to provide a kind of arclight protective device to overcome above-mentioned defective.
The utility model content
The purpose of this utility model be to provide a kind of principle simple, be swift in motion reliable and can excise fault fast, guarantee the arclight protective device of the safety of staff and controller switching equipment.
To achieve these goals, the utility model provides a kind of arclight protective device, the switchgear that is used for the protection switch cabinet, comprise: over-current detection unit is used for detected being connected after the output current of the current transformer on inlet wire between power supply and the bus or the feeder line between described bus and described switchgear compares with the setting electric current sent the overcurrent comparison signal; Arc photosensor is used for detecting the arclight of described switch cubicle, and sends the arclight detection signal; Arc light detects auxiliary unit, is used for gathering and sending described arclight detection signal; Master unit, the described overcurrent comparison signal and the described arc light that are used for sending according to the described over-current detection unit that receives detect the described arclight detection signal transmission trip signal that auxiliary unit sends; Circuit breaker is used for according to the described trip signal that receives, cuts off being electrically connected between described switchgear and the described bus.
Preferably, described arclight protective device also comprises toggle switch, and the described arclight detection signal that is used for sending according to the described arc photosensor that receives detects auxiliary unit by described arc light and sends code signal to described master unit.Understandably, the geocoding of described arc photosensor can be set by described toggle switch, and detect auxiliary unit by described arc light described geocoding is sent to described master unit, like this, described master unit can identify the position that arc fault takes place, thereby helps in time overhauling and fixing a breakdown.
Preferably; described arclight protective device also comprises temperature sensor; be used for detecting the temperature of described switch cubicle and detect auxiliary unit transmission temperature detection signal to described master unit by described arc light, described temperature detection signal that described master unit will receive and preferred temperature send alarm signal after relatively.Understandably, by the real-time temperature that detects in the described switch cubicle of described temperature sensor is set in described switch cubicle, and send alarm signal after carrying out in real time relatively by described master unit to described temperature, reaching the effect that gives warning in advance, thereby avoid unnecessary loss.
Preferably; described arclight protective device also comprises the breaker fail protection unit; be used for tripping signal with detected described circuit breaker; be used for the tripping signal that detected described circuit breaker sends is sent to described master unit, described master unit sends trip command according to the described tripping signal that receives and gives in the upstream circuit breaker of described circuit breaker upper level the cut-out that is electrically connected between all the described switchgears on the described bus and the power supply.Understandably; by be provided with described breaker fail protection unit can detect in real time described circuit breaker whether according to trip signal with failure removal; all switchgears on the bus are not excised to the lead-in circuit breaker that is connected on the same bus if in time failure removal is then in time notified described master unit to send described trip signal, be not damaged to protect other switchgear.
Compared with prior art; because the variation of arclight is obvious and change very fast; thereby the arclight that takes place when breaking down of the utility model by sense switch cabinet inside; can judge whether fast to break down; thereby can be, and then the switchgear in the switch cubicle be effectively protected fast with failure removal.In addition, because the utility model adopts arclight to detect simultaneously and over-current detection is come the generation of failure judgement, thereby can judge accurately whether switch cubicle inside breaks down, thereby guarantee the stable operation of switchgear.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model arclight protective device.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.
As Fig. 1, the electric light arc protective device of present embodiment comprises: over-current detection unit 10 is used for detected being connected after the output current of the current transformer (not shown) on inlet wire between power supply and the bus (not shown) or the feeder line (not shown) between described bus and described switchgear compares with the setting electric current sent the overcurrent comparison signal; Arc photosensor 20 is used for detecting the arclight of described switch cubicle, and sends the arclight detection signal; Arc light detects auxiliary unit 30, is used for gathering and sending described arclight detection signal; Master unit 40, the described overcurrent comparison signal and the described arc light that are used for sending according to the described over-current detection unit 10 that receives detect the described arclight detection signal transmission trip signal that auxiliary unit 30 sends; Circuit breaker 50 is used for according to the described trip signal that receives, cuts off being electrically connected between described switchgear (not shown) and the described bus.
Preferably, described arclight protective device also comprises toggle switch 60, is used for the described arclight detection signal according to described arc photosensor 20 transmissions that receive, and detects auxiliary unit 30 by described arc light and sends code signals to described master unit 40.Understandably, the geocoding of described arc photosensor 20 can be set by described toggle switch 60, and detect auxiliary unit 30 by described arc light described geocoding is sent to described master unit 40, like this, described master unit 40 can identify the position that arc fault takes place, thereby helps in time overhauling and fixing a breakdown.
Preferably; described arclight protective device also comprises temperature sensor 70; be used for detecting the temperature of described switch cubicle and detect auxiliary unit 30 transmission temperature detection signals to described master unit 40 by described arc light, described temperature detection signal that described master unit 40 will receive and preferred temperature send alarm signal after relatively.Understandably, detect in real time by the temperature that in described switch cubicle, is provided with in 70 pairs of described switch cubicles of described temperature sensor, and send alarm signal after being undertaken in real time relatively by 40 pairs of described temperature of described master unit, thus reach the effect that gives warning in advance, to avoid unnecessary loss.
Preferably; described arclight protective device also comprises breaker fail protection unit 80; be used for the tripping signal that detected described circuit breaker 50 sends is sent to described master unit 40, described master unit 40 sends trip command according to the described tripping signal that receives and gives in the upstream circuit breaker 90 of described circuit breaker 50 upper levels the cut-out that is electrically connected between all the described switchgears on the described bus and the power supply.Understandably; by be provided with described breaker fail protection unit 80 can detect in real time described circuit breaker 50 whether according to trip signal with failure removal; if in time failure removal is not then in time notified described master unit 40 to send described trip signal to the upstream circuit breaker 90 that is positioned at described circuit breaker 50 upper levels; the cut-out that is electrically connected with between all switchgears on the whole bus and the power supply is not damaged to protect other switchgear.
Understandably, each described arc light detects auxiliary unit can insert 5-10 described arc photosensor 20, and each described master unit can insert 10 described arc lights and detect auxiliary unit 30.
Below in conjunction with Fig. 1 the operation principle of the utility model arclight protective device being done one explains: at first; by being arranged on the described temperature sensor 70 real-time temperature that detect in the described switch cubicle in the described switch cubicle; and send alarm signal after being undertaken in real time relatively by 40 pairs of described temperature of described master unit, whether fault takes place to give warning in advance.Then, on the one hand, described over-current detection unit 10 compares electric current on the detected current transformer that is connected on inlet wire or the feeder line and setting electric current, to judge whether the electric current on the described current transformer transfinites, then send an overcurrent comparison signal sends trip signal as described master unit 40 to described master unit 40 a logical signal if transfinite.On the other hand, described lonely optical sensor 20 detects the arclight that produces in the described switch cubicle in real time, then detect auxiliary unit 30 transmission arclight detection signals send trip signals as described master unit 40 to described master unit 40 another logical signal if detect arclight by described arc light, meanwhile, described arc photosensor 20 can also send the arclight detection signal to described toggle switch 60, encode by 60 pairs of described arc photosensors 20 of described toggle switch, and described code signal is sent to described master unit 40 so that the position that described master unit 40 identification faults take place by described arc light detection auxiliary unit 30.Receive the two-way logical signal of described over-current detection unit 10 and 30 transmissions of described arc light detection auxiliary unit when described master unit 40 after, described master unit 40 sends trip signal and gives described circuit breaker 50, with disengagement failure.And simultaneously; described breaker fail protection unit 80 can detect described circuit breaker 50 break-make situations in real time; to judge the success of whether tripping of described circuit breaker 50; if described circuit breaker 50 does not trip successfully; described breaker fail protection unit 80 sends to described master unit 40 with the tripping signal of described circuit breaker 50; described master unit 40 sends described trip command to the upstream circuit breaker 90 that is positioned at described circuit breaker 50 upper levels according to the tripping signal of the described circuit breaker that receives; the cut-out that is electrically connected with between all switchgears on the whole bus and the power supply is not damaged to protect other switchgear.
As mentioned above; because the variation of arclight obviously and change very soon, thereby the arclight that takes place when breaking down by sense switch cabinet inside of the utility model can judge whether to break down fast; thereby can be, and then the switchgear in the switch cubicle be effectively protected fast with failure removal.In addition, because the utility model adopts arclight to detect simultaneously and over-current detection is come the generation of failure judgement, thereby can judge accurately whether switch cubicle inside breaks down, thereby guarantee the stable operation of switchgear.
Abovely the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to essence of the present utility model in conjunction with most preferred embodiment.
Claims (4)
1. arclight protective device is used for the switchgear of protection switch cabinet, it is characterized in that described arclight protective device comprises:
Over-current detection unit is used for detected being connected after the output current of the current transformer on inlet wire between power supply and the bus or the feeder line between described bus and described switchgear compares with the setting electric current sent the overcurrent comparison signal;
Arc photosensor is used for detecting the arclight of described switch cubicle, and sends the arclight detection signal;
Arc light detects auxiliary unit, is used for gathering and sending described arclight detection signal;
Master unit, the described overcurrent comparison signal and the described arc light that are used for sending according to the described over-current detection unit that receives detect the described arclight detection signal transmission trip signal that auxiliary unit sends;
Circuit breaker is used for according to the described trip signal that receives, cuts off being electrically connected between described switchgear and the described bus.
2. arclight protective device as claimed in claim 1; it is characterized in that; described arclight protective device also comprises toggle switch, and the described arclight detection signal that is used for sending according to the described arc photosensor that receives detects auxiliary unit by described arc light and sends code signal to described master unit.
3. arclight protective device as claimed in claim 1 or 2; it is characterized in that; described arclight protective device also comprises temperature sensor; be used for detecting the temperature of described switch cubicle and detect auxiliary unit transmission temperature detection signal to described master unit by described arc light, described temperature detection signal that described master unit will receive and preferred temperature send alarm signal after relatively.
4. arclight protective device as claimed in claim 1; it is characterized in that; described arclight protective device also comprises the breaker fail protection unit; be used for the tripping signal that detected described circuit breaker sends is sent to described master unit, described master unit sends trip command according to the described tripping signal that receives and gives in the upstream circuit breaker of described circuit breaker upper level the cut-out that is electrically connected between all the described switchgears on the described bus and the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205753989U CN201846069U (en) | 2010-10-22 | 2010-10-22 | Arc light protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205753989U CN201846069U (en) | 2010-10-22 | 2010-10-22 | Arc light protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201846069U true CN201846069U (en) | 2011-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205753989U Expired - Fee Related CN201846069U (en) | 2010-10-22 | 2010-10-22 | Arc light protector |
Country Status (1)
| Country | Link |
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| CN (1) | CN201846069U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623967A (en) * | 2012-04-07 | 2012-08-01 | 山东电力研究院 | Medium-low voltage bus electrical arc light protection method and system |
| CN102842882A (en) * | 2011-06-20 | 2012-12-26 | 伊顿公司 | Arc flash system for power circuit |
| CN103579945A (en) * | 2013-11-12 | 2014-02-12 | 长城电器集团乐山宁格朗电气有限责任公司 | 10kV high-voltage switch cabinet |
| CN103580005A (en) * | 2013-10-31 | 2014-02-12 | 云南电力试验研究院（集团）有限公司电力研究院 | Novel arc light protection method |
| CN103618284A (en) * | 2013-11-22 | 2014-03-05 | 安徽昌南电气科技有限公司 | Low-voltage arc-light quick-acting switching-off control device |
| CN103762515A (en) * | 2012-08-07 | 2014-04-30 | 伊顿公司 | Switchgear including a circuit breaker having a trip unit with an interface |
| CN104319637A (en) * | 2014-11-14 | 2015-01-28 | 成都华瑞祥电器成套设备有限公司 | High-voltage switch cabinet |
| CN104332833A (en) * | 2014-11-14 | 2015-02-04 | 成都华瑞祥电器成套设备有限公司 | Electrical control high-tension switch cabinet |
| CN104377664A (en) * | 2014-11-07 | 2015-02-25 | 成龙建设集团有限公司 | Medium-voltage and low-voltage arc light busbar protection device set |
| CN104466927A (en) * | 2014-12-31 | 2015-03-25 | 重庆布鲁杰科技有限公司 | Safety protection control device of cable head and control method of safety protection control device |
| CN104466702A (en) * | 2014-12-01 | 2015-03-25 | 广西电网有限责任公司玉林供电局 | 10kV switch cabinet rapid arc-control device |
| CN109672155A (en) * | 2019-01-21 | 2019-04-23 | 安徽升隆电气有限公司 | A kind of fault electric arc acquisition breaker |
| CN110867819A (en) * | 2018-08-28 | 2020-03-06 | 飞秒光电科技(西安)有限公司 | Arc light detection method and device |
-
2010
- 2010-10-22 CN CN2010205753989U patent/CN201846069U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842882A (en) * | 2011-06-20 | 2012-12-26 | 伊顿公司 | Arc flash system for power circuit |
| CN102842882B (en) * | 2011-06-20 | 2016-12-21 | 伊顿公司 | Arc flash system for power circuit |
| CN102623967B (en) * | 2012-04-07 | 2015-10-28 | 山东电力研究院 | Middle voltage bus bar electric arc light protection method and system |
| CN102623967A (en) * | 2012-04-07 | 2012-08-01 | 山东电力研究院 | Medium-low voltage bus electrical arc light protection method and system |
| CN103762515A (en) * | 2012-08-07 | 2014-04-30 | 伊顿公司 | Switchgear including a circuit breaker having a trip unit with an interface |
| CN103580005A (en) * | 2013-10-31 | 2014-02-12 | 云南电力试验研究院（集团）有限公司电力研究院 | Novel arc light protection method |
| CN103580005B (en) * | 2013-10-31 | 2017-03-08 | 云南电力试验研究院（集团）有限公司电力研究院 | A kind of arc light protection method |
| CN103579945A (en) * | 2013-11-12 | 2014-02-12 | 长城电器集团乐山宁格朗电气有限责任公司 | 10kV high-voltage switch cabinet |
| CN103618284A (en) * | 2013-11-22 | 2014-03-05 | 安徽昌南电气科技有限公司 | Low-voltage arc-light quick-acting switching-off control device |
| CN104377664A (en) * | 2014-11-07 | 2015-02-25 | 成龙建设集团有限公司 | Medium-voltage and low-voltage arc light busbar protection device set |
| CN104377664B (en) * | 2014-11-07 | 2017-10-20 | 成龙建设集团有限公司 | Mesolow arc light busbar protective device group |
| CN104332833A (en) * | 2014-11-14 | 2015-02-04 | 成都华瑞祥电器成套设备有限公司 | Electrical control high-tension switch cabinet |
| CN104319637A (en) * | 2014-11-14 | 2015-01-28 | 成都华瑞祥电器成套设备有限公司 | High-voltage switch cabinet |
| CN104466702A (en) * | 2014-12-01 | 2015-03-25 | 广西电网有限责任公司玉林供电局 | 10kV switch cabinet rapid arc-control device |
| CN104466927A (en) * | 2014-12-31 | 2015-03-25 | 重庆布鲁杰科技有限公司 | Safety protection control device of cable head and control method of safety protection control device |
| CN104466927B (en) * | 2014-12-31 | 2017-03-08 | 重庆布鲁杰科技有限公司 | End security protection and control device and its control method |
| CN110867819A (en) * | 2018-08-28 | 2020-03-06 | 飞秒光电科技(西安)有限公司 | Arc light detection method and device |
| CN109672155A (en) * | 2019-01-21 | 2019-04-23 | 安徽升隆电气有限公司 | A kind of fault electric arc acquisition breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN GUANGGU ENVIRONMENTAL PROTECTION TECHNOLOGY Free format text: FORMER OWNER: WUHAN DONGHU GAOXIN GROUP CORP., LTD. Effective date: 20120201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120201 Address after: 430074 No. 1, Jiayuan Road, East Lake Development Zone, Hubei, Wuhan Patentee after: Wuhan Guanggu Environmental Protection Technology Co.,Ltd. Address before: 430074, No. 1, Jiayuan Road, East Lake New Technology Development Zone, Wuhan, Hubei Patentee before: Wuhan Donghu Gaoxin Group Corp., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |