CN204464972U - A kind of arc light protective device - Google Patents
A kind of arc light protective device Download PDFInfo
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- CN204464972U CN204464972U CN201520048817.6U CN201520048817U CN204464972U CN 204464972 U CN204464972 U CN 204464972U CN 201520048817 U CN201520048817 U CN 201520048817U CN 204464972 U CN204464972 U CN 204464972U
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- arc light
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Abstract
The utility model discloses a kind of arc light protective device, it comprises main control module, at least one arc probe, current sensor, Fibre Optical Sensor, first arc light detecting supplementary module and the second arc light detecting supplementary module, this arc probe is placed in the measured point of switch cubicle, current sensor is installed on the cable of corresponding measured point, this Fibre Optical Sensor is distributed in inside switch cabinet surrounding, this arc probe connects this main control module through this first arc light detecting supplementary module, this current sensor connects this main control module, this Fibre Optical Sensor connects this main control module through this second arc light detecting supplementary module, this main control module is by receive and the current signal analyzed on measured point cable that the arc optical signal of the measured point that this arc probe and/or Fibre Optical Sensor are sent to and current sensor be sent to carrys out the arclight short trouble in identification switch cabinet.Its tool has the following advantages: Cleaning Principle is simple, action executing speed is fast, testing result is accurate.
Description
Technical field
The utility model relates to a kind of arc light protective device.
Background technology
In electric power system, the middle voltage bus bar of below 35KV electric pressure, goes out regardless of it that number of lines is how many, complexity, does not generally install special bus protection.But, outlet on middle voltage bus bar is many, frequent operation, three-phase conductor wire spacing and the close together of the earth, be easy to the destruction being subject to toy, add that equipment quality is poorer than high-tension apparatus, easily there is ageing of insulation and mechanical wear in equipment, and because service conditions is severe, the reasons such as artificial and operating mistake, make the probability of failure of middle voltage bus bar much higher than high pressure, superhigh pressure bus.
And in transformation and distribution system, transformer backup overcurrent protection cannot meet the requirement of excision middle voltage bus bar fault fast the operate time of this protection for being greater than 1000ms operate time; Feeder line overcurrent protection locking transformer overcurrent protection operate time is 300-400ms, does not also reach the requirement being less than 100ms; High impedance protection typical action time 35-60ms, but protection range limits by CT installation site, and expensive, conscientiously can not protect the Frequent Troubles ground such as cable joint place of cable vault, therefore also be not suitable for the application of middle voltage bus bar protection.
Following defect is had: protection is installed on the spot, if can not excise fault rapidly, fault electric arc can destroy CT, circuit breaker, protection, secondary cable for traditional protection; Make trip protection scheme malfunctioning; Expand fault coverage; Air resistor random-access is strong, and the overcurrent definite value calculated based on short-circuit resistance exists failure risk etc.
Utility model content
The utility model provides a kind of arc light protective device, which overcomes the deficiencies in the prior art described in background technology.
The utility model solves the technical scheme that its technical problem adopts:
A kind of arc light protective device, it comprises main control module, at least one arc probe, current sensor, Fibre Optical Sensor, first arc light detecting supplementary module and the second arc light detecting supplementary module, this arc probe is placed in the measured point of switch cubicle, this current sensor is installed on the cable of corresponding measured point, this Fibre Optical Sensor is distributed in inside switch cabinet surrounding, this arc probe connects this main control module through this first arc light detecting supplementary module, this current sensor connects this main control module, this Fibre Optical Sensor connects this main control module through this second arc light detecting supplementary module, this main control module is by receive and the current signal analyzed on measured point cable that the arc optical signal of the measured point that this arc probe and/or Fibre Optical Sensor are sent to and current sensor be sent to carrys out the arclight short trouble in identification switch cabinet, this the first arc light detecting module to this main control module, sends to this main control module after the arc optical signal that this second arc light detecting supplementary module is used for being obtained by this Fibre Optical Sensor carries out opto-electronic conversion for the arc light detecting signal that forwards this arc probe and send.
Among one embodiment: this main control module has sample port, this current sensor is connected to the sample port of this main control module.
Among one embodiment: be provided with arc light decision circuitry in this arc probe, this arc light decision circuitry by exporting high level, low level and unsettled three status signals to main control module with comparing of arc light set point, this high level, low level and unsettled signal respectively to arc light should be had, without arc light and probe cable fault three kinds of situations.
Among one embodiment: also comprise toggle switch, this toggle switch connects the arc light decision circuitry of this arc probe, for regulating the size of this arc light set point.
Among one embodiment: this main control module has self-test signal output port.
Among one embodiment: this main control module has relay signal output port.
Among one embodiment: this main control module has overcurrent alarm signal output ends mouth and arc light alarm signal output ends mouth.
Among one embodiment: also comprise breaker fail protection module, it connects this main control module.
The technical program is compared with background technology, and its tool has the following advantages:
1, the utility model measures arc light and current signal simultaneously, and by judging whether the combination of arc light and current signal arclight short trouble occurs, Cleaning Principle is simple, action executing speed is fast, testing result is accurate.
2, the utility model adopts arc probe and Fibre Optical Sensor measuring arc light; have this arc probe respective advantage waited by force with Fibre Optical Sensor antijamming capability easy for installation concurrently; testing result is more accurate; user can select installing arc probe to carry out arc light according to actual conditions to measure and/or Fibre Optical Sensor carries out arc light and measures; make the use of this arc light protecting device more convenient, the switch cubicle adaptability for different structure structure is stronger.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 depicts the structural representation of a kind of arc light protective device described in the utility model.
Fig. 2 depicts the workflow diagram of a kind of arc light protective device described in the utility model.
Embodiment
Please refer to Fig. 1, a kind of arc light protective device, it comprises main control module 10, at least one arc probe 20, current sensor 30, Fibre Optical Sensor 40, first arc light detecting supplementary module 50, second arc light detecting supplementary module 60, breaker fail protection module 70, this arc probe 20 is placed in the measured point of switch cubicle, current sensor 30 is installed on the cable (bus) of corresponding measured point, this Fibre Optical Sensor 40 is distributed in inside switch cabinet surrounding, this arc probe 20 connects this main control module 10 through this first arc light detecting supplementary module 50, this current sensor 30 connects this main control module 10, this Fibre Optical Sensor 40 connects this main control module 10 through this second arc light detecting supplementary module, this breaker fail protection module 70 connects this main control module 10.This main control module 10 is an intelligent chip containing CPU, and in the present embodiment, this Fibre Optical Sensor 40 is optical fibre ring transducer.Preferably, can also comprise an expanding element 80, it connects this main control module 10, and this expanding element 80 is one by the unit of CPU independent operating, makes not share this main control module 10 with other functions, can realize independently electric arc protection.
This main control module 10 has sample port 11, this current sensor 30 is connected to the sample port 11 of this main control module 10, and this main control module 10 also has self-test signal output port 12, relay signal output port 13, arc light alarm signal output ends mouth 14, overcurrent alarm signal output ends mouth 15.
Arc light decision circuitry is provided with in this arc probe 20, this arc light decision circuitry by exporting high level, low level and unsettled three status signals (i.e. arc light detecting signal) to main control module with comparing of arc light set point, this high level, low level and unsettled signal respectively to arc light should be had, without arc light and probe cable fault three kinds of situations.This arc light protective device also comprises toggle switch 70, and this toggle switch 70 connects the arc light decision circuitry of this arc probe 20, for regulating the size of this arc light set point.
The concrete operation principle of arc light protective device described in the utility model is: this arc probe 20 measures the arc optical signal of measured point in switch cubicle in real time and compares with arc light set point after current arc optical signal being carried out opto-electronic conversion by the arc light decision circuitry in this arc probe 20; export corresponding high level or low level or unsettled signal (i.e. arc light detecting signal) to the first arc light detecting supplementary module 50, then be sent to main control module 10 by the first arc light detecting supplementary module 50.This arc probe 20 can be multiple and be arranged in different measured point place in switch cubicle, this the first arc light detecting supplementary module 50 can as the set of signals repeating center of the plurality of arc probe node, and the arc light detecting signal that the plurality of arc probe 20 sends all sends to this main control module 10 through this first arc light detecting supplementary module 50; Simultaneously, this Fibre Optical Sensor 40 also can measure the arc optical signal in switch cubicle in real time and be sent to main control module 10 after arc optical signal is carried out opto-electronic conversion by this second arc light detecting supplementary module 60, and this is obtained by Fibre Optical Sensor by main control module and the arc light set point of arc light detecting signal after opto-electronic conversion and its inner setting compares and judges whether to there is arc light; Meanwhile, this current sensor 30 measures the cable current signal at corresponding measured point place in real time, and is sent to main control module 10 in real time; The arc light detecting signal that main control module 10 sends according to this first arc light detecting supplementary module 50 and/or the second arc light detecting supplementary module 60 and current signal judge whether to need to export arc light alarm signal or over-current signal or relay output signal with cutoff circuit.
Please refer to Fig. 2, the workflow of this arc light protective device is:
(1) after powering on, the software systems of main control module are carried out to the initialization of register of initialization, particularly timer and A/D conversion, sample frequency and sampling period are set, sample frequency, much larger than power frequency, turns (2) step after initialization completes.
(2) main control module gathers arc optical signal and current signal according to sample frequency, after having gathered at every turn, has carried out definite value and compares.If detect, the first arc light detecting supplementary module sends the arc light detecting signal having arc light detecting signal or the second arc light detecting supplementary module to send and is greater than arc light set point, and current detection current effective value is greater than overcurrent set point, turns (4) step.The arc light detecting signal not having the first arc light detecting supplementary module to send if current and the arc light detecting signal sent by the second arc light detecting supplementary module be less than arc light set point (if user only adopt arc probe or light sensor one of them to obtain arc optical signal time, then only need judge corresponding arc light detecting signal), or current detection current effective value is when being less than overcurrent set point, turn (3) step.
(3) if current detection current effective value is greater than overcurrent set point, then main control module sends overcurrent alarm signal, and if continue more than 6s this over-current signal detected, then main control module cut off current sensor loop; If current detection is to there being arc optical signal, then main control module sends arc light alarm signal, and if continue more than 6s and arc optical signal detected, then main control module cuts off arc photosensor and/or Fibre Optical Sensor; Once this arc photosensor and/light sensor, current sensor is again after involution, turns (2) step.
(4) main control module sends relay signal to disconnect this fault loop.
The above, be only the utility model preferred embodiment, therefore the scope that the utility model implements can not be limited according to this, the equivalence namely done according to the utility model the scope of the claims and description change with modify, all should still belong in scope that the utility model contains.
Claims (8)
1. an arc light protective device, it is characterized in that: comprise main control module, at least one arc probe, current sensor, Fibre Optical Sensor, first arc light detecting supplementary module and the second arc light detecting supplementary module, this arc probe is placed in the measured point of switch cubicle, this current sensor is installed on the cable of corresponding measured point, this Fibre Optical Sensor is distributed in inside switch cabinet surrounding, this arc probe connects this main control module through this first arc light detecting supplementary module, this current sensor connects this main control module, this Fibre Optical Sensor connects this main control module through this second arc light detecting supplementary module, this main control module is by receive and the current signal analyzed on measured point cable that the arc optical signal of the measured point that this arc probe and/or Fibre Optical Sensor are sent to and current sensor be sent to carrys out the arclight short trouble in identification switch cabinet, this the first arc light detecting module to this main control module, sends to this main control module after the arc optical signal that this second arc light detecting supplementary module is used for being obtained by this Fibre Optical Sensor carries out opto-electronic conversion for the arc light detecting signal that forwards this arc probe and send.
2. a kind of arc light protective device according to claim 1, it is characterized in that: this main control module has sample port, this current sensor is connected to the sample port of this main control module.
3. a kind of arc light protective device according to claim 1; it is characterized in that: in this arc probe, be provided with arc light decision circuitry; this arc light decision circuitry by exporting high level, low level and unsettled three status signals to main control module with comparing of arc light set point, this high level, low level and unsettled signal respectively to arc light should be had, without arc light and probe cable fault three kinds of situations.
4. a kind of arc light protective device according to claim 3, is characterized in that: also comprise toggle switch, and this toggle switch connects the arc light decision circuitry of this arc probe, for regulating the size of this arc light set point.
5. a kind of arc light protective device according to claim 1, is characterized in that: this main control module has self-test signal output port.
6. a kind of arc light protective device according to claim 1, is characterized in that: this main control module has relay signal output port.
7. a kind of arc light protective device according to claim 1, is characterized in that: this main control module has overcurrent alarm signal output ends mouth and arc light alarm signal output ends mouth.
8. a kind of arc light protective device according to claim 1, it is characterized in that: also comprise breaker fail protection module, it connects this main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520048817.6U CN204464972U (en) | 2015-01-23 | 2015-01-23 | A kind of arc light protective device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520048817.6U CN204464972U (en) | 2015-01-23 | 2015-01-23 | A kind of arc light protective device |
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| CN204464972U true CN204464972U (en) | 2015-07-08 |
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| CN201520048817.6U Active CN204464972U (en) | 2015-01-23 | 2015-01-23 | A kind of arc light protective device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199294A (en) * | 2016-08-31 | 2016-12-07 | 中铁工程设计咨询集团有限公司 | A kind of arc light protecting device |
| CN106646309A (en) * | 2016-11-14 | 2017-05-10 | 国网江苏省电力公司淮安供电公司 | Precision detection device of arc light detector |
| CN106786402A (en) * | 2016-11-14 | 2017-05-31 | 国网山东省电力公司东阿县供电公司 | Middle-low voltage switch cabinet arc light protecting device |
| CN106849026A (en) * | 2017-03-30 | 2017-06-13 | 安徽徽电科技股份有限公司 | A kind of arc light protecting device and its guard method based on fast vacuum switch |
| CN106887827A (en) * | 2017-04-07 | 2017-06-23 | 宁波华创锐科智能科技有限公司 | A kind of main control unit for arc protection |
| CN107425509A (en) * | 2017-08-04 | 2017-12-01 | 昆山帝森克罗德光电技术有限公司 | A kind of arc light protecting device |
| CN108270205A (en) * | 2018-01-25 | 2018-07-10 | 北京海智元科技有限公司 | Arc light monitoring protection system based on pressure protection |
| CN113687116A (en) * | 2021-08-11 | 2021-11-23 | 苏州汇川控制技术有限公司 | Arc discharge fault detection device, system and method |
-
2015
- 2015-01-23 CN CN201520048817.6U patent/CN204464972U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199294A (en) * | 2016-08-31 | 2016-12-07 | 中铁工程设计咨询集团有限公司 | A kind of arc light protecting device |
| CN106646309A (en) * | 2016-11-14 | 2017-05-10 | 国网江苏省电力公司淮安供电公司 | Precision detection device of arc light detector |
| CN106786402A (en) * | 2016-11-14 | 2017-05-31 | 国网山东省电力公司东阿县供电公司 | Middle-low voltage switch cabinet arc light protecting device |
| CN106849026A (en) * | 2017-03-30 | 2017-06-13 | 安徽徽电科技股份有限公司 | A kind of arc light protecting device and its guard method based on fast vacuum switch |
| CN106887827A (en) * | 2017-04-07 | 2017-06-23 | 宁波华创锐科智能科技有限公司 | A kind of main control unit for arc protection |
| CN107425509A (en) * | 2017-08-04 | 2017-12-01 | 昆山帝森克罗德光电技术有限公司 | A kind of arc light protecting device |
| CN108270205A (en) * | 2018-01-25 | 2018-07-10 | 北京海智元科技有限公司 | Arc light monitoring protection system based on pressure protection |
| CN113687116A (en) * | 2021-08-11 | 2021-11-23 | 苏州汇川控制技术有限公司 | Arc discharge fault detection device, system and method |
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| C14 | Grant of patent or utility model | ||
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