CN204374393U - Detect the warning device that instantaneous ac scurries into straight-flow system - Google Patents
Detect the warning device that instantaneous ac scurries into straight-flow system Download PDFInfo
- Publication number
- CN204374393U CN204374393U CN201420844715.0U CN201420844715U CN204374393U CN 204374393 U CN204374393 U CN 204374393U CN 201420844715 U CN201420844715 U CN 201420844715U CN 204374393 U CN204374393 U CN 204374393U
- Authority
- CN
- China
- Prior art keywords
- way optocoupler
- warning device
- relay
- straight
- flow system
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Alarm Systems (AREA)
Abstract
The utility model relates to and a kind ofly detects the warning device that instantaneous ac scurries into straight-flow system, ground connection after the series connection of straight-flow system positive pole capacitance one, current-limiting resistance one and the first two-way optocoupler, current-limiting resistance one connects 1 pin of the first two-way optocoupler, 2 pin ground connection of the first two-way optocoupler, the coil of 3 pin contact relay one of the first two-way optocoupler, relay one switch connects warning device one and power supply, and 4 pin of the first two-way optocoupler connect power supply; Ground connection after the series connection of straight-flow system negative pole capacitance two, current-limiting resistance two and the second two-way optocoupler, current-limiting resistance two connects 2 pin of the second two-way optocoupler, 1 pin ground connection of the second two-way optocoupler, the coil of 3 pin contact relay two of the second two-way optocoupler, relay two switch connects warning device two and power supply, and 4 pin of the second two-way optocoupler connect power supply.The utility model structure is simple, Real-Time Monitoring straight-flow system whether instantaneous ac can occur scurries into fault, and can report to the police in time, remind staff to carry out fault handling.
Description
Technical field
The utility model relates to a kind of warning device, particularly a kind ofly detects the warning device that instantaneous ac scurries into straight-flow system.
Background technology
The safe and reliable operation of direct supply is most important for the safe and reliable operation of transformer station.But because DC power supply equipment is many, power cable is long, often occurs the faults such as DC earthing in actual motion.Although straight-flow system is run floatingly, the normal operation of single-point grounding not influential system, must be eliminated by looking up the fault as early as possible, otherwise when there is second point ground connection, will cause relay or protective device misoperation, lead to grave consequences.
At present, straight-flow system insulation and line selection apparatus is generally employed in transformer station, although serve good effect, but in actual motion, there is a kind of special earth fault to be to exchange and instantaneously scurry into DC Line Fault, when generation instantaneous ac is scurried into probably within a few tens of milliseconds by switch tripping, lead to significant blackouts accident.Although Partial DC system insulation and line selection apparatus have possessed to exchange scurry into direct current warning function, but can only judge that fault is scurried in long period (being at least level second) or the interchange slowly strengthened, fault is scurried into instantaneous ac and cannot realize monitoring, like this fault is scurried into interchange and there is check frequency.
Utility model content
According to above deficiency of the prior art, problem to be solved in the utility model is: provide a kind of structure simple, flexible and convenient to use, safe reliability is high, Real-Time Monitoring straight-flow system whether can there is instantaneous ac and scurry into fault, and can report to the police in time, the detection instantaneous ac avoiding power outage to occur scurries into the warning device of straight-flow system.
The utility model solves the technical scheme that its technical matters adopts:
Described detection instantaneous ac scurries into the warning device of straight-flow system, comprises capacitance one, the two-way optocoupler of current-limiting resistance one, first, relay one, warning device one, capacitance two, the two-way optocoupler of current-limiting resistance two, second, relay two, warning device two;
Straight-flow system positive pole is connected ground connection after capacitance one, current-limiting resistance one and the first two-way optocoupler successively, current-limiting resistance one connects 1 pin of the first two-way optocoupler, 2 pin ground connection of the first two-way optocoupler, the coil of 3 pin contact relay one of the first two-way optocoupler, relay one switch connects warning device one and power supply, and 4 pin of the first two-way optocoupler connect power supply;
Straight-flow system negative pole is connected ground connection after capacitance two, current-limiting resistance two and the second two-way optocoupler successively, current-limiting resistance two connects 2 pin of the second two-way optocoupler, 1 pin ground connection of the second two-way optocoupler, the coil of 3 pin contact relay two of the second two-way optocoupler, relay two switch connects warning device two and power supply, and 4 pin of the second two-way optocoupler connect power supply.
Whether the warning device that described detection instantaneous ac scurries into straight-flow system Real-Time Monitoring straight-flow system can there is instantaneous ac and scurries into fault, for the foundation that field personnel provides failure judgement to occur, ensure that staff carries out failture evacuation fast and effectively, avoid the generation of power outage, structure is simple, and safe reliability is high.
Preferred further, warning device one and warning device two adopt LED or emergency alarm bell.Easy to connect, draw materials conveniently, cost is low.
Preferred further, warning device one and warning device two adopt LED and emergency alarm bell, and LED and emergency alarm bell are arranged in parallel.When breaking down for one, another one can be done for subsequent use, improves safe reliability.
Described detection instantaneous ac scurries into the method for straight-flow system: whether have instantaneous ac electricity by capacitance one by detecting, current-limiting resistance one, first two-way optocoupler, capacitance two, current-limiting resistance two and the second two-way optocoupler, if there is instantaneous ac electricity to pass through, the then triode conducting of the first two-way optocoupler or the second two-way optocoupler, pilot relay one or relay two action, warning device one is controlled or warning device two is reported to the police by relay one or relay two, if do not have instantaneous ac electricity to pass through, the then triode not conducting of the first two-way optocoupler and the second two-way optocoupler, relay one and relay two are failure to actuate, warning device one and warning device two are not reported to the police.Described in specific as follows:
1) if scurry into straight-flow system without instantaneous ac, direct current can be isolated by the capacitance one be connected with straight-flow system negative pole with straight-flow system positive pole and capacitance two, current-limiting resistance one, the two-way optocoupler of current-limiting resistance two, first and the second two-way optocoupler all do not have electric current to pass through, the coil no power of relay one and relay two, relay one and relay two switch are all in off-state, and warning device one and warning device two are not all reported to the police;
2) if straight-flow system positive pole has instantaneous ac to scurry into straight-flow system, then capacitance one and current-limiting resistance one have alternating current to pass through, alternating current acts on the input end of the first two-way optocoupler, the output terminal triode ON of the first two-way optocoupler, the coil electricity of relay one, the make and break contact of relay one closes, warning device one is reported to the police, the capacitance two be connected with straight-flow system negative pole, current-limiting resistance two and the second two-way optocoupler all do not have electric current to pass through, the coil no power of relay two, relay two switch is in off-state, warning device two is not reported to the police,
3) if straight-flow system negative pole has instantaneous ac to scurry into straight-flow system, then capacitance two and current-limiting resistance two have alternating current to pass through, alternating current acts on the input end of the second two-way optocoupler, the output terminal triode ON of the second two-way optocoupler, the coil electricity of relay two, the make and break contact of relay two closes, warning device two is reported to the police, the capacitance one be connected with straight-flow system positive pole, current-limiting resistance one and the first two-way optocoupler all do not have electric current by the coil no power of relay one, relay one switch is in off-state, and warning device one is not reported to the police;
4) if straight-flow system positive pole and straight-flow system negative pole all have instantaneous ac to scurry into straight-flow system, then capacitance one, current-limiting resistance one, capacitance two and current-limiting resistance two have alternating current to pass through simultaneously, alternating current acts on the input end of the first two-way optocoupler and the second two-way optocoupler, the output terminal triode ON of the first two-way optocoupler and the second two-way optocoupler, the coil electricity of relay one and relay two, the make and break contact of relay one and relay two closes, and warning device one and warning device two are reported to the police simultaneously.
The beneficial effect that the utility model has is:
The warning device structure that described detection instantaneous ac scurries into straight-flow system is simple, flexible and convenient to use, the fault detect blind area existing for current monitoring alarm can be overcome, Real-Time Monitoring straight-flow system whether can there is instantaneous ac and scurry into fault, and can report to the police in time, be the foundation that field personnel provides failure judgement to occur, ensure that staff carries out failture evacuation fast and effectively, avoid the generation of power outage, improve the reliability of power supply.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model embodiment 1;
Fig. 3 is the structural representation of the utility model embodiment 2;
In figure, R1, current-limiting resistance one; R2, current-limiting resistance two; C1, capacitance one; C2, capacitance two; U1, the first two-way optocoupler; U2, the second two-way optocoupler; T1, relay one; T2, relay two; L1, warning device one; L2, warning device two.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Embodiment 1:
As Figure 1-Figure 2, detection instantaneous ac described in the utility model scurries into the warning device of straight-flow system, comprises capacitance one C1, current-limiting resistance one R1, the first two-way optocoupler U1, relay one T1, warning device one L1, capacitance two C2, current-limiting resistance two R2, the second two-way optocoupler U2, relay two T2, warning device two L2;
Straight-flow system positive pole is connected ground connection after capacitance one C1, current-limiting resistance one R1 and the first two-way optocoupler U1 successively, current-limiting resistance one R1 connects 1 pin of the first two-way optocoupler U1, the 2 pin ground connection of the first two-way optocoupler U1, the coil of 3 pin contact relay one T1 of the first two-way optocoupler U1, relay one T1 switch connects warning device one L1 and power supply, and 4 pin of the first two-way optocoupler U1 connect power supply;
Straight-flow system negative pole is connected ground connection after capacitance two C2, current-limiting resistance two R2 and the second two-way optocoupler U2 successively, current-limiting resistance two R2 connects 2 pin of the second two-way optocoupler U2, the 1 pin ground connection of the second two-way optocoupler U2, the coil of 3 pin contact relay two T2 of the second two-way optocoupler U2, relay two T2 switch connects warning device two L2 and power supply, and 4 pin of the second two-way optocoupler U2 connect power supply.
As shown in Figure 2, warning device one L1 and warning device two L2 adopts LED or emergency alarm bell.
Embodiment 2:
As shown in Figure 1, Figure 3, then on the basis of embodiment 1, LED two ends emergency alarm bell in parallel; Or emergency alarm bell two ends parallel connection LED lamp.
Detection instantaneous ac described in the utility model scurries into the method for straight-flow system:
Instantaneous ac electricity whether is had by capacitance one C1 by detecting, current-limiting resistance one R1, first two-way optocoupler U1, capacitance two C2, current-limiting resistance two R2 and the second two-way optocoupler U2, if there is instantaneous ac electricity to pass through, the then triode conducting of the first two-way optocoupler U1 or the second two-way optocoupler U2, pilot relay one T1 or relay two T2 action, control warning device one L1 or warning device two L2 by relay one T1 or relay two T2 to report to the police, if do not have instantaneous ac electricity to pass through, the then triode not conducting of the first two-way optocoupler U1 and the second two-way optocoupler U2, relay one T1 and relay two T2 is failure to actuate, warning device one L1 and warning device two L2 does not report to the police.Described in specific as follows:
1) if scurry into straight-flow system without instantaneous ac, direct current can be isolated by capacitance one C1 be connected with straight-flow system negative pole with straight-flow system positive pole and capacitance two C2, current-limiting resistance one R1, current-limiting resistance two R2, the first two-way optocoupler U1 and the second two-way optocoupler U2 all do not have electric current to pass through, the coil no power of relay one T1 and relay two T2, relay one T1 and relay two T2 switch are all in off-state, and warning device one L1 and warning device two L2 does not all report to the police;
2) if straight-flow system positive pole has instantaneous ac to scurry into straight-flow system, then capacitance one C1 and current-limiting resistance one R1 has alternating current to pass through, alternating current acts on the input end of the first two-way optocoupler U1, the output terminal triode ON of the first two-way optocoupler U1, the coil electricity of relay one T1, the make and break contact of relay one T1 closes, warning device one L1 reports to the police, capacitance two C2 be connected with straight-flow system negative pole, current-limiting resistance two R2 and the second two-way optocoupler U2 does not all have electric current to pass through, the coil no power of relay two T2, relay two T2 switch is in off-state, warning device two L2 does not report to the police,
3) if straight-flow system negative pole has instantaneous ac to scurry into straight-flow system, then capacitance two C2 and current-limiting resistance two R2 has alternating current to pass through, alternating current acts on the input end of the second two-way optocoupler U2, the output terminal triode ON of the second two-way optocoupler U2, the coil electricity of relay two T2, the make and break contact of relay two T2 closes, warning device two L2 reports to the police, capacitance one C1 be connected with straight-flow system positive pole, current-limiting resistance one R1 and the first two-way optocoupler U1 does not all have electric current by the coil no power of relay one T1, relay one T1 switch is in off-state, warning device one L1 does not report to the police,
4) if straight-flow system positive pole and straight-flow system negative pole all have instantaneous ac to scurry into straight-flow system, then capacitance one C1, current-limiting resistance one R1, capacitance two C2 and current-limiting resistance two R2 have alternating current to pass through simultaneously, alternating current acts on the input end of the first two-way optocoupler U1 and the second two-way optocoupler U2, the output terminal triode ON of the first two-way optocoupler U1 and the second two-way optocoupler U2, the coil electricity of relay one T1 and relay two T2, the make and break contact of relay one T1 and relay two T2 closes, and warning device one L1 and warning device two L2 reports to the police simultaneously.
The utility model structure is simple, flexible and convenient to use, and safe reliability is high, Real-Time Monitoring straight-flow system whether instantaneous ac can occur scurry into fault, and can report to the police in time, improves the reliability of power supply, has stronger practicality.
Claims (3)
1. detect the warning device that instantaneous ac scurries into straight-flow system, it is characterized in that: comprise capacitance one (C1), current-limiting resistance one (R1), the first two-way optocoupler (U1), relay one (T1), warning device one (L1), capacitance two (C2), current-limiting resistance two (R2), the second two-way optocoupler (U2), relay two (T2), warning device two (L2);
Straight-flow system positive pole is connected capacitance one (C1), current-limiting resistance one (R1) and the first two-way optocoupler (U1) ground connection afterwards successively, current-limiting resistance one (R1) connects 1 pin of the first two-way optocoupler (U1), 2 pin ground connection of the first two-way optocoupler (U1), the coil of 3 pin contact relay one (T1) of the first two-way optocoupler (U1), relay one (T1) switch connects warning device one (L1) and power supply, and 4 pin of the first two-way optocoupler (U1) connect power supply;
Straight-flow system negative pole is connected capacitance two (C2), current-limiting resistance two (R2) and the second two-way optocoupler (U2) ground connection afterwards successively, current-limiting resistance two (R2) connects 2 pin of the second two-way optocoupler (U2), 1 pin ground connection of the second two-way optocoupler (U2), the coil of 3 pin contact relay two (T2) of the second two-way optocoupler (U2), relay two (T2) switch connects warning device two (L2) and power supply, and 4 pin of the second two-way optocoupler (U2) connect power supply.
2. detection instantaneous ac according to claim 1 scurries into the warning device of straight-flow system, it is characterized in that: described warning device one (L1) and warning device two (L2) adopt LED or emergency alarm bell.
3. detection instantaneous ac according to claim 1 scurries into the warning device of straight-flow system, it is characterized in that: described warning device one (L1) and warning device two (L2) adopt LED and emergency alarm bell, and LED and emergency alarm bell are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844715.0U CN204374393U (en) | 2014-12-26 | 2014-12-26 | Detect the warning device that instantaneous ac scurries into straight-flow system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844715.0U CN204374393U (en) | 2014-12-26 | 2014-12-26 | Detect the warning device that instantaneous ac scurries into straight-flow system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204374393U true CN204374393U (en) | 2015-06-03 |
Family
ID=53330601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420844715.0U Withdrawn - After Issue CN204374393U (en) | 2014-12-26 | 2014-12-26 | Detect the warning device that instantaneous ac scurries into straight-flow system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204374393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483581A (en) * | 2014-12-26 | 2015-04-01 | 山东智洋电气股份有限公司 | Alarm device and method for detecting instantaneous alternating current fleeing into direct current system |
-
2014
- 2014-12-26 CN CN201420844715.0U patent/CN204374393U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483581A (en) * | 2014-12-26 | 2015-04-01 | 山东智洋电气股份有限公司 | Alarm device and method for detecting instantaneous alternating current fleeing into direct current system |
| CN104483581B (en) * | 2014-12-26 | 2017-10-27 | 山东智洋电气股份有限公司 | Detection instantaneous ac scurries into the warning device and method of straight-flow system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203759822U (en) | Residual electric current type electrical fire hazard monitoring detector | |
| CN205038281U (en) | Direct current system monitoring devices is scurried into in interchange | |
| CN203339659U (en) | Single-phase electric leakage protection and power supply automation recovery device | |
| CN205265232U (en) | Novel colliery low -voltage power supply network selective earth lea kage protection in pit device | |
| CN202473664U (en) | Intelligent air switch condition indicator | |
| CN105865532A (en) | Monitoring and alarming system for transformer substation secondary system TMOV lightning arrester main board | |
| CN104330607B (en) | Alternating current scurries into the detection of straight-flow system and compels to jump device | |
| CN204374393U (en) | Detect the warning device that instantaneous ac scurries into straight-flow system | |
| CN201955425U (en) | Insulation fault positioning device in hospital isolated power supply system | |
| CN204597453U (en) | Electric prospection switch | |
| CN204538264U (en) | A kind of high security earth electrode | |
| CN203942269U (en) | A kind of New Arc failure to trip device | |
| CN104483581A (en) | Alarm device and method for detecting instantaneous alternating current fleeing into direct current system | |
| CN206096281U (en) | Monitoring devices to 400V power supply system | |
| CN203911498U (en) | Distributed photovoltaic grid-connected protective equipment | |
| CN103065428A (en) | Alarming method of converting station monitoring system | |
| CN205656239U (en) | Secondary equipotential earth mat monitoring alarm device | |
| CN201937341U (en) | Non-voltage recovery device of remote monitoring type distribution room | |
| CN204925280U (en) | Power grid equipment fault detection alarm | |
| CN203502536U (en) | Switch cabinet protection circuit broken line monitoring device | |
| CN204302429U (en) | A kind of anti-misoperation device of ground lead | |
| CN203433048U (en) | High-voltage open-phase remote-monitoring alarm device for transformer | |
| CN205120854U (en) | Power simulation signal converter | |
| CN103399216A (en) | Remote monitoring and alarming device for high-voltage phase lack of transformer | |
| CN202025061U (en) | Intelligent fault judgment device for automatic blocking/power continuous lines of railway distribution network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150603 Effective date of abandoning: 20171027 |