CN201797308U - Microcomputer arc light protection device - Google Patents
Microcomputer arc light protection device Download PDFInfo
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- CN201797308U CN201797308U CN2010205320234U CN201020532023U CN201797308U CN 201797308 U CN201797308 U CN 201797308U CN 2010205320234 U CN2010205320234 U CN 2010205320234U CN 201020532023 U CN201020532023 U CN 201020532023U CN 201797308 U CN201797308 U CN 201797308U
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- relays
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Abstract
The utility model relates to a microcomputer arc light protection device and belongs to the field of relay protection. The protection device mainly comprises an ultraviolet sensor, a voltage converter, a conditioning circuit, a sampling hold circuit, an A/D converter, a double digital signal microprocessor, two tripping relays, two signal relays and an LCD liquid display screen, wherein the output ends of the ultraviolet sensor and the voltage converter are connected with the conditioning circuit; the double digital signal microprocessor is connected with the tripping relays and the signal relays; and the two tripping relays are connected with an incoming line breaker and an outgoing line breaker respectively. In the utility model, a short-circuit fault is determined by detecting the voltage of a bus and the ultraviolet emitted by a faulted arc, the internal short-circuit fault of a switch cabinet can be cleared quickly and selectively, wrong operation or giving an alarm signal by mistake is avoided, a structure of a master computer and a slave computer is not adopted, and the structure of the protection device is simpler.
Description
Technical field
The utility model relates to a kind of microcomputer arc protection device, belongs to the relaying protection field.
Background technology
At present, the arc protection device generally includes optical sensor, power pack, A/D conversion, digital signal microprocessor (DSP), tripping relay etc. by main frame and slave machine.This protective device is installed in the switch cubicle, and visible light that sends by detection failure electric arc and inlet wire short circuit current are determined the short trouble in the switch cubicle, send trip signal.This protective device under the influence of sunlight, light and camera flash, if without current interlock, then may malfunction; If the employing current interlock then may influence responsiveness, and still might send out alarm signal by mistake.And owing to will detect the inlet wire short circuit current, need usually to adopt complicated main frame and slave structure, require traffic rate height between main frame and the slave, reliable communications.
Summary of the invention
In order to overcome the deficiency of existing arc protection device, the utility model provides a kind of new short trouble detection hardware structure, can excise the switch cubicle internal short circuit fault fast selectively, prevents malfunction.
The technical scheme that the utility model adopted is: microcomputer arc protection device mainly comprises UV sensor, voltage changer, modulate circuit, sampling hold circuit, A/D converter, even numbers word signal microprocessor, two tripping relaies, two signal relays and LCD LCDs; The output of UV sensor and voltage changer is connected with modulate circuit, modulate circuit is connected with A/D converter with sampling hold circuit, A/D converter is connected with even numbers word signal microprocessor, even numbers word signal microprocessor is connected with signal relay with tripping relay by parallel delivery outlet, and two tripping relaies are connected with the outlet circuit breaker with lead-in circuit breaker respectively.
Wherein, voltage changer preferably adopts 3, is used for detecting busbar voltage; UV sensor preferably adopts 4, and wherein two transducers are installed in the bus-bar room in the switch cubicle, and the cable vault that two other is installed in the switch cubicle is used for the ultraviolet ray that detection failure electric arc sends and determines short trouble.
Because UV sensor only reflects the power of various light middle-ultraviolet lamps, so the software and hardware in the energy simplification device.Fault electric arc sends stronger ultraviolet ray, and comprises more weak ultraviolet ray in other light such as sunlight, light and camera flash, so can be easy to determine in the switch cubicle whether short trouble to have taken place according to the power of light middle-ultraviolet lamp.Detect busbar voltage with voltage changer, further prevent malfunction with the low-voltage startup.Owing on the switch cubicle WV is arranged; single microcomputer arc protection device is as long as detect this switch cubicle interior ultraviolet intensity and busbar voltage; the signal that does not need other device just can determine whether short trouble has taken place in the switch cubicle, therefore needn't adopt main frame and slave structure.
The beneficial effects of the utility model are: adopt voltage changer and UV sensor to detect and can excise the switch cubicle internal short circuit fault fast selectively, can malfunction or mistake send out an alarm signal; Adopt two tripping relaies to control lead-in circuit breaker and outlet circuit breaker trip respectively, energy safety action selectivity; Single microcomputer arc protection device just can determine whether switch cubicle inside short trouble and action have selectively taken place, and needn't adopt main frame and slave structure, make the protective device structure simpler.
Description of drawings
Fig. 1 is the structure chart of the utility model arc protection device.
Fig. 2 is the allocation plan of the utility model arc protection device in switch cubicle.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Among Fig. 1, microcomputer arc protection device mainly is made up of 4 UV sensor, 3 voltage changers, modulate circuit, sampling hold circuit, 16 A/D converters, two DSP, two solid-state trip relays, two signal relays, communication interface, power supply, keyboard and LCD LCDs etc.The uitraviolet intensity of 4 interior diverse locations of UV sensor sense switch cabinet, 3 voltage changers are used to detect busbar voltage, the output of UV sensor and voltage changer is nursed one's health through modulate circuit, keep and after A/D converter was converted to digital quantity, a DSP calculated and logical process by sampling.The contact of a tripping relay is connected the breaking coil of lead-in circuit breaker, and the contact of another tripping relay connects the breaking coil of outlet circuit breaker.If busbar voltage is lower than the voltage definite value, and uitraviolet intensity surpasses ultraviolet definite value, and then a trip signal is sent out in the tripping relay action, and trouble signal is sent out in the trouble signal actuating of relay, and the LCD LCDs shows accident report.If uitraviolet intensity surpasses ultraviolet definite value, but busbar voltage is higher than the voltage definite value, then anticipating signal is sent out in the anticipating signal actuating of relay, LCD LCDs display alarm information.Incidents such as another DSP processing keyboard, LCD shows and communicate by letter.This protective device is not subjected to the influence of short circuit current size, can send trip signal within the 2ms after short circuit occurring, and effectively the fault restriction arcing time, assurance equipment and personal safety have improved operational reliability.
Fig. 2 is to be the allocation plan that example is described Fig. 1 protective device with middle extrusion wiretap cabinet.Two UV sensor are installed in bus-bar room, and two UV sensor are installed in the cable vault, detect the ultraviolet ray of bus-bar room and cable vault respectively.3 voltage changers are used to detect busbar voltage.If busbar voltage is lower than the voltage definite value, and the bus-bar room uitraviolet intensity surpasses ultraviolet definite value, and then trip signal is sent out in first tripping relay action, makes lead-in circuit breaker QF1 tripping operation, excision busbar short-circuit fault.If busbar voltage is lower than the voltage definite value, and cable vault's uitraviolet intensity surpasses ultraviolet definite value, and then a trip signal is sent out in second tripping relay action, makes outlet circuit breaker Q F2 tripping operation, and excision cable vault short trouble guarantees action selectively.
Claims (3)
1. microcomputer arc protection device is characterized in that described protective device mainly comprises UV sensor, voltage changer, modulate circuit, sampling hold circuit, A/D converter, even numbers word signal microprocessor, two tripping relaies, two signal relays and LCD LCDs; The output of described UV sensor and voltage changer is connected with modulate circuit, described modulate circuit is connected with A/D converter with sampling hold circuit, described A/D converter is connected with even numbers word signal microprocessor, described even numbers word signal microprocessor is connected with signal relay with tripping relay by parallel delivery outlet, and described two tripping relaies are connected with the outlet circuit breaker with lead-in circuit breaker respectively.
2. microcomputer arc protection device according to claim 1 is characterized in that: described voltage changer adopts 3.
3. microcomputer arc protection device according to claim 1 and 2 is characterized in that: described UV sensor adopts 4, and wherein two transducers are installed in the bus-bar room in the switch cubicle, and two other is installed in the cable vault in the switch cubicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205320234U CN201797308U (en) | 2010-09-17 | 2010-09-17 | Microcomputer arc light protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205320234U CN201797308U (en) | 2010-09-17 | 2010-09-17 | Microcomputer arc light protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201797308U true CN201797308U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205320234U Expired - Lifetime CN201797308U (en) | 2010-09-17 | 2010-09-17 | Microcomputer arc light protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201797308U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694372A (en) * | 2012-06-01 | 2012-09-26 | 南京师范大学 | Monitoring and arc protecting system for switch cabinet |
| CN103022987A (en) * | 2012-12-25 | 2013-04-03 | 成都星宇节能技术股份有限公司 | Photoelectric arc light protection device |
| CN103248016A (en) * | 2013-04-24 | 2013-08-14 | 南自晋能自动化有限公司 | Short-wave ultraviolet light bus protection device |
| CN103346525A (en) * | 2013-07-16 | 2013-10-09 | 南京益瑞电气有限公司 | Arc light protecting device based on UVC sensors |
| CN104993461A (en) * | 2015-06-23 | 2015-10-21 | 江苏金智科技股份有限公司 | Relay protection device providing electric arc light protection function |
| CN106410739A (en) * | 2016-11-02 | 2017-02-15 | 云南电力试验研究院(集团)有限公司 | Arc protection device and fault diagnosis method thereof |
-
2010
- 2010-09-17 CN CN2010205320234U patent/CN201797308U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694372A (en) * | 2012-06-01 | 2012-09-26 | 南京师范大学 | Monitoring and arc protecting system for switch cabinet |
| CN103022987A (en) * | 2012-12-25 | 2013-04-03 | 成都星宇节能技术股份有限公司 | Photoelectric arc light protection device |
| CN103248016A (en) * | 2013-04-24 | 2013-08-14 | 南自晋能自动化有限公司 | Short-wave ultraviolet light bus protection device |
| CN103346525A (en) * | 2013-07-16 | 2013-10-09 | 南京益瑞电气有限公司 | Arc light protecting device based on UVC sensors |
| CN104993461A (en) * | 2015-06-23 | 2015-10-21 | 江苏金智科技股份有限公司 | Relay protection device providing electric arc light protection function |
| CN104993461B (en) * | 2015-06-23 | 2017-11-28 | 江苏金智科技股份有限公司 | A kind of protective relaying device that electric arc protection function is provided |
| CN106410739A (en) * | 2016-11-02 | 2017-02-15 | 云南电力试验研究院(集团)有限公司 | Arc protection device and fault diagnosis method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |
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| CX01 | Expiry of patent term |