CN205283108U - Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation - Google Patents
Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation Download PDFInfo
- Publication number
- CN205283108U CN205283108U CN201521130454.7U CN201521130454U CN205283108U CN 205283108 U CN205283108 U CN 205283108U CN 201521130454 U CN201521130454 U CN 201521130454U CN 205283108 U CN205283108 U CN 205283108U
- Authority
- CN
- China
- Prior art keywords
- arc light
- acquisition module
- current
- voltage acquisition
- signal
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation. Because current arc light protection device only adopts overcurrent and arc light as the criterion, so reduced the selectivity of protection system to the tripping operation and the warning condition. The utility model provides a be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation, a serial communication port, include: arc light sensor, electric current voltage acquisition module, the arc light input port of being connected with arc light sensor, the electric current voltage acquisition module analog input mouth of being connected with electric current voltage acquisition module, a signal judges for receiving arc light input port and the input of electric current voltage acquisition module analog input mouth to output tripping operation instruction or alarm instruction's microprocessor, be connected tripping operation / warning export of accomplishing tripping operation action or actuation of an alarm with microprocessor. The utility model discloses simple structure, reasonable in design, it is reliable and stable.
Description
Technical field
The utility model relates to and a kind of is suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device, especially relates to a kind of photoelectric arc light protection device.
Background technology
Mostly adopting the direct ground connection operation scheme of neutral point in the above system of China 110kV, once there is fault, the action immediately of relaying device, makes switch trip, and eliminates fault.
Therefore, current known arc light protecting device principle adopted phase current and the two criterion of arc light more. When equipment generation arclight fault, namely protector detects that arc light and phase current send trip command signal when getting over limited signal immediately simultaneously; When arc light only being detected or phase current gets over limited signal, device is only sent out guard signal and is not sent out circuit breaker trip order.
But, it is isolated neutral or in the small current neutral grounding system of extinguishing arc coil ground connection in operation scheme, when there is single-phase earthing fault, because fault phase-to-ground voltage reduces, the phase voltage of non-faulting two-phase raises, but line voltage is still symmetrical, do not affect the continuous power supply to user, so system is still allowed to operation 1��2h.
Owing to existing arc light protecting device only adopts overcurrent and arc light as criterion, therefore decrease securing system to the selectivity of tripping operation and alarm condition. For small current neutral grounding system, it is easy to cause when there being arclight to occur, equipment sends trip command immediately thus causes system shutdown situation.
Practical novel content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, reliable and stable is suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device.
The technical scheme in the invention for solving the above technical problem is: this is suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device, it is characterised in that, comprising:
For gathering the arc photosensor of arc optical signal;
For gathering the current/voltage acquisition module of over-current signal, low voltage signal, zero sequence current signal and zero sequence voltage signal;
The arc light input aperture being connected with described arc photosensor;
The current/voltage acquisition module analog quantity input being connected with described current/voltage acquisition module;
For receive arc light input aperture and current/voltage acquisition module analog quantity input input signal and judge, thus exporting the microprocessor of trip command or alarm command, described arc light input aperture and current/voltage acquisition module analog quantity input are connected with microprocessor respectively;
It is connected with described microprocessor and completes the tripping operation of trip operation or warning action/warning outlet.
The utility model is retaining on original basis gathering phase current and arc light criterion; add zero sequence electric current and voltage two important criterions; can provide more to tripping operation and alarm condition to select; thus improve stability and the reliability of arc light protecting device, multiple operation scheme can be met simultaneously.
Fiber connection is passed through between arc photosensor described in the utility model and arc light input aperture.
Principle of work of the present utility model: arc light protecting device can send trip signal in 3 kinds of situations: (1) protector detects arc light and phase current more limited signal simultaneously; (2) protector detects arc light and low voltage signal simultaneously; (3) protector detects arc light and zero sequence electric current more limited signal simultaneously, and system runs 2h under single-phase earthing failure condition. In addition, arc light protecting device can send guard signal in 4 kinds of situations: (1) protector only detects arc light more limited signal; (2) protector only detects phase current/zero sequence electric current more limited signal; (3) protector only detects that phase voltage reduces signal; (4) protector detects arc light and zero sequence electric current more limited signal simultaneously, and system under single-phase earthing failure condition working time less than 2h. It thus is seen that the multi-selection of arc light protecting device tripping operation and warning can provide higher stability and reliability.
The utility model is compared with prior art; have the following advantages and effect: structure is simple; reasonable in design; retaining on original basis gathering phase current and arc light criterion; add zero sequence electric current and voltage two important criterions; can provide more to tripping operation and alarm condition to select, thus improve stability and the reliability of arc light protecting device, applicable in available for different connection modes.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation being suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device in the utility model embodiment.
Fig. 2 is the principle of work figure being suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
Embodiment 1.
See Fig. 1 to Fig. 2, being suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device and comprise of the present embodiment:
For gathering the arc photosensor 1 of arc optical signal;
For gathering the current/voltage acquisition module 2 of over-current signal, low voltage signal, zero sequence current signal and zero sequence voltage signal;
The arc light input aperture 3 being connected with arc photosensor 1;
The current/voltage acquisition module analog quantity input 4 being connected with current/voltage acquisition module 2;
For receive arc light input aperture 3 and current/voltage acquisition module analog quantity input 4 input signal and judge, thus exporting the microprocessor 5 of trip command or alarm command, arc light input aperture 3 and current/voltage acquisition module analog quantity input 4 are connected with microprocessor 5 respectively;
It is connected with microprocessor 5 and completes the tripping operation/warning outlet 6 of trip operation or warning action.
The present embodiment is retaining on original basis gathering phase current and arc light criterion; add zero sequence electric current and voltage two important criterions; can provide more to tripping operation and alarm condition to select, thus improve stability and the reliability of arc light protecting device, multiple operation scheme can be met simultaneously.
Arc photosensor 1 in the present embodiment and pass through Fiber connection between arc light input aperture 3.
Principle of work of the present utility model: arc light protecting device can send trip signal in 3 kinds of situations: (1) protector detects arc light and phase current more limited signal simultaneously; (2) protector detects arc light and low voltage signal simultaneously; (3) protector detects arc light and zero sequence electric current more limited signal simultaneously, and system runs 2h under single-phase earthing failure condition. In addition, arc light protecting device can send guard signal in 4 kinds of situations: (1) protector only detects arc light more limited signal; (2) protector only detects phase current/zero sequence electric current more limited signal; (3) protector only detects that phase voltage reduces signal; (4) protector detects arc light and zero sequence electric current more limited signal simultaneously, and system under single-phase earthing failure condition working time less than 2h. It thus is seen that the multi-selection of arc light protecting device tripping operation and warning can provide higher stability and reliability.
Above content described in this specification sheets is only to the utility model example explanation. Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by the utility model person of ordinary skill in the field; as long as not deviateing the content of the utility model specification sheets or surmounting this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (2)
1. one kind is suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device, it is characterised in that, comprising:
For gathering the arc photosensor of arc optical signal;
For gathering the current/voltage acquisition module of over-current signal, low voltage signal, zero sequence current signal and zero sequence voltage signal;
The arc light input aperture being connected with described arc photosensor;
The current/voltage acquisition module analog quantity input being connected with described current/voltage acquisition module;
For receive arc light input aperture and current/voltage acquisition module analog quantity input input signal and judge, thus exporting the microprocessor of trip command or alarm command, described arc light input aperture and current/voltage acquisition module analog quantity input are connected with microprocessor respectively;
It is connected with described microprocessor and completes the tripping operation of trip operation or warning action/warning outlet.
2. according to claim 1 it is suitable in the middle low-tension switch cabinet of multiple operation scheme bus main protection device, it is characterised in that: pass through Fiber connection between described arc photosensor and arc light input aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130454.7U CN205283108U (en) | 2015-12-30 | 2015-12-30 | Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130454.7U CN205283108U (en) | 2015-12-30 | 2015-12-30 | Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205283108U true CN205283108U (en) | 2016-06-01 |
Family
ID=56067645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521130454.7U Active CN205283108U (en) | 2015-12-30 | 2015-12-30 | Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205283108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058819A (en) * | 2016-06-06 | 2016-10-26 | 国家电网公司 | Voltage-blocking arc protection system and method |
-
2015
- 2015-12-30 CN CN201521130454.7U patent/CN205283108U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058819A (en) * | 2016-06-06 | 2016-10-26 | 国家电网公司 | Voltage-blocking arc protection system and method |
| CN106058819B (en) * | 2016-06-06 | 2018-12-07 | 国家电网公司 | Voltage blocking formula arc light protecting system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209119800U (en) | Bus main protection arc light protecting device in middle-low voltage switch cabinet | |
| CN105162088B (en) | A kind of power distribution station automatic fault detection system of 10kV cable system feeder line | |
| CN101944721A (en) | Valve fault detection treatment method of high-voltage direct-current transmission system | |
| CN101582581B (en) | Electricity leakage-prevention and overcurrent protection device | |
| CN202651781U (en) | Neutral point integrated grounding complete device | |
| CN204649899U (en) | Small current grounding failure wire selection system in a kind of dispatching of power netwoks | |
| CN202524078U (en) | Arc suppression and overvoltage protection device controller | |
| CN205283108U (en) | Be suitable for interior generating line main protection equipment of well low -voltage switchgear of multiple method of operation | |
| CN203932988U (en) | A kind of low current grounding tripping operation and self-healing system | |
| CN205693355U (en) | A kind of medium voltage power distribution cabinet main electrical scheme system | |
| CN209184242U (en) | It is a kind of to dispatch controllable power network neutral point earthing or grounding means | |
| CN201238190Y (en) | Earth leakage circuit breaker for zero wire break | |
| CN203166469U (en) | Phase sequence protective relay | |
| CN205791445U (en) | Ac leakage drives protector | |
| CN106257782B (en) | Ac leakage drives protector | |
| CN205160207U (en) | Double bus scheme intelligent substation's busbar voltage connection structure | |
| CN209860601U (en) | Low-voltage reactive compensation fee control device | |
| CN203504129U (en) | Component for determining breaker switching on/off signal generation | |
| CN203707761U (en) | 10kV distribution transformer neutral line breaking trip device | |
| CN206099289U (en) | Four -pole circuit breaker | |
| CN109004531A (en) | A kind of neutral resistance complexes | |
| CN205610202U (en) | Power leakage protector | |
| CN202535032U (en) | Novel intelligent electricity leakage comprehensive protector | |
| CN104465052A (en) | Transformer neutral point resistance type direct current suppression device | |
| CN202550496U (en) | Individual unit DC (Direct Current) stage differential device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |