CN109449879A - A kind of traffic lights earth leakage protective device and its method - Google Patents
A kind of traffic lights earth leakage protective device and its method Download PDFInfo
- Publication number
- CN109449879A CN109449879A CN201811544087.3A CN201811544087A CN109449879A CN 109449879 A CN109449879 A CN 109449879A CN 201811544087 A CN201811544087 A CN 201811544087A CN 109449879 A CN109449879 A CN 109449879A
- Authority
- CN
- China
- Prior art keywords
- port
- traffic lights
- alternating voltage
- current transducer
- earth leakage
- 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.)
- Pending
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 10
- 230000005611 electricity Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of traffic lights earth leakage protective device, including isolating transformer, Signalized control equipment and several loads, the output terminals A and output end B of the isolating transformer are connected to air switch；It further include alternating voltage current transducer, 1 one end of port of the alternating voltage current transducer is connected to air switch, other end ground line C；2 one end of port of the alternating voltage current transducer is connected to air switch, other end ground line C；The alternating voltage current transducer connects alarm controller.Circuit of the invention can effectively improve the operation stability of traffic lights, can also and alarm security risk that may be present, making the maintenance of traffic lights becomes planned maintenance, the confusion of repairing and emergency processing caused by effectively avoiding traffic lights from having a power failure suddenly.
Description
Technical field
The present invention relates to the protection apparatus field of traffic lights, specifically a kind of traffic lights earth leakage protective device and
Its method.
Background technique
City traffic signal lamp has two at present, first is that signal lamp can be frequent if installing earth leakage protective additional
Tripping suddenly influences traffic and causes the generation of electric shock accidents second is that there are security risks if withouyt leakage switch.It is practical
In operation, many places are short-circuit by earth leakage circuit-breaker, it is ensured that traffic lights power supply, such way danger close.
Summary of the invention
For the defect for solving the above-mentioned prior art, the present invention provides a kind of traffic lights earth leakage protective device and its side
Method, circuit of the invention can effectively improve the operation stability of traffic lights, moreover it is possible to and alarm safety that may be present is hidden
Suffer from, make traffic lights maintenance become planned maintenance, caused by effectively avoiding traffic lights from having a power failure suddenly repair and
The confusion of emergency processing.
To realize the above-mentioned technical purpose, the present invention adopts the following technical scheme: a kind of traffic lights earth leakage protective device,
Including isolating transformer, Signalized control equipment and several loads, the output terminals A and output end B of the isolating transformer be equal
It is connected to air switch；
It further include alternating voltage current transducer, 1 one end of port of the alternating voltage current transducer is connected to air
Switch, the other end are grounded C；2 one end of port of the alternating voltage current transducer is connected to air switch, other end ground connection
Line C；
The alternating voltage current transducer connects alarm controller.
Preferably, the output terminals A is connected to alternating voltage current transducer and alarm controller, institute by fuse one
It states output end B and alternating voltage current transducer and alarm controller is connected to by fuse two.
Preferably, the port 3 of the alternating voltage current transducer is connected with current transformer.
Preferably, the alarm controller is alarmed using GPRS remote collection.
A kind of traffic lights earth leakage protecting method, comprising the following steps:
The current value of port 3 is detected, while detecting the voltage value of port 1 and port 2, if detecting port 1 or end
2 either ends of mouth have voltage, alarm then alternating voltage current transducer send voltage signal to alarm controller.
If detecting that the current value of port 3 increases suddenly, illustrates output terminals A and output end B while ground connection event occur
Barrier；If detecting that there is voltage in port 1, illustrate that ground fault occurs in output end B；If detecting that there is voltage in port 2, say
There is ground fault in bright output terminals A.
In conclusion the present invention achieves following technical effect:
In circuit of the present invention when output terminals A and output end B are while connecting ground wire C because of fault ground simultaneously, circuit electricity
Stream can increase suddenly, cause air switch power-off protection, not will cause personnel's electric shock.When output terminals A because fault ground is and ground
When line C connection, then lamp stand and the earth and output terminals A are equipotentials, and personnel, which touch lamp stand, does not have potential difference, not will form electric current
Electric shock accidents occurs for circuit.When mono- fault ground of output end B is connect with ground wire C, then lamp stand is with output end B with the earth
Equipotential, personnel, which touch lamp stand, does not have potential difference, not will form current loop equally and electric shock accidents occurs.Circuit energy of the invention
Effectively improve the operation stability of traffic lights, moreover it is possible to and alarm security risk that may be present, make traffic lights
Maintenance becomes planned maintenance, the confusion of repairing and emergency processing caused by effectively avoiding traffic lights from having a power failure suddenly.
Detailed description of the invention
Fig. 1 is circuit diagram of the present invention；
In figure, 1, isolating transformer, 2, air switch, 3, fuse two, 4, fuse one, 5, current transformer, 6, friendship
Galvanic electricity piezoelectricity flow transmitter, 7, alarm controller, 8, Signalized control equipment, 9, load.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Embodiment:
As shown in Figure 1, a kind of traffic lights earth leakage protective device, including isolating transformer 1, Signalized control equipment 8
And several loads 9, the output terminals A and output end B of isolating transformer 1 are connected to air switch 2；
It further include alternating voltage current transducer 6,1 one end of port of alternating voltage current transducer 6 is connected to air and opens
It closes the 2, other end and is grounded C；2 one end of port of alternating voltage current transducer 6 is connected to air switch 2, other end ground line
C；
Alternating voltage current transducer 6 connects alarm controller 7.
Output terminals A is connected to alternating voltage current transducer 6 and alarm controller 7 by fuse 1, and output end B is logical
It crosses fuse 23 and is connected to alternating voltage current transducer 6 and alarm controller 7.
The port 3 of alternating voltage current transducer 6 is connected with current transformer 5.
Alarm controller 7 is alarmed using GPRS remote collection.
A kind of traffic lights earth leakage protecting method, comprising the following steps:
The current value of port 3 is detected, while detecting the voltage value of port 1 and port 2, if detecting port 1 or end
2 either ends of mouth have voltage, alarm then alternating voltage current transducer 6 send voltage signal to alarm controller 7.
If detecting that the current value of port 3 increases suddenly, illustrates output terminals A and output end B while ground connection event occur
Barrier；If detecting that there is voltage in port 1, illustrate that ground fault occurs in output end B；If detecting that there is voltage in port 2, say
There is ground fault in bright output terminals A.
Because traffic lights power is smaller, and in outdoor application, therefore passes through 220V through earth leakage protective after alternating current introducing and become
220V isolating transformer 1 provides power supply to traffic lights.Because the electrical isolation of isolation acts on, earth leakage protective is only to electric power incoming line
And isolating transformer 1 shields, it is not related with the load after being isolated, therefore a possibility that earth leakage protective tripping power-off, is big
It is big to reduce.
As shown in Figure 1, the traffic signals lamp load 9 of 1 secondary side of isolating transformer is likewise supplied with ground connection collection and PE line, at this time
220V voltage is sent through output terminals A, output end B to equipment, and when outlet ground fault, there are three types of states: (1) output terminals A, output
End B is grounded simultaneously to be connected with ground wire C；(2) output terminals A is connected with ground wire C；(3) output end B and ground wire C is connected.
(1) output terminals A, output end B are grounded are connected with ground wire C simultaneously, i.e. output terminals A, output end B simultaneous faults, then
Electric current can increase suddenly in route, cause air switch power-off protection, not will cause personnel's electric shock.
(2) output terminals A is connected with ground wire C, i.e. output terminals A failure, then lamp stand and the earth and output terminals A equipotential, i.e.,
Output terminals A and ground wire C equipotential, when human contact's lamp stand, do not have potential difference, not will form current loop, thing of getting an electric shock will not occur
Therefore.
(3) output end B and ground wire C is connected, i.e. output end B failure, then lamp stand and the earth and output end B equipotential, i.e.,
Output end B and ground wire C equipotential, when human contact's lamp stand, do not have potential difference, not will form current loop, thing of getting an electric shock will not occur
Therefore.
Under normal circumstances, the voltage value of the port 1 and port 2 of alternating voltage current transducer 6 be 0, if output terminals A with
Ground wire C is connected, and the voltage between the voltage, that is, output terminals A and ground wire C of port 1 is 0, at this point, the voltage of port 2, that is, output end B
It is 220V that voltage between ground wire C, which is equal to the voltage between output end B and output terminals A,.Similarly, if output end B and ground wire C
It is connected, the voltage of port 2 is 0, and 1 voltage of port is 220V.When detect port 1 and port 2 either one have voltage when, the voltage
Signal is sent through alternating voltage current transducer 6 to alarm controller 7, is read by APP software, is timely fed back to administrative staff,
Maintenance is arranged in time.
In circuit of the present invention when output terminals A and output end B are while connecting ground wire C because of fault ground simultaneously, circuit electricity
Stream can increase suddenly, cause 2 power-off protection of air switch, not will cause personnel's electric shock.When output terminals A because fault ground is and ground
When line C connection, then lamp stand and the earth and output terminals A are equipotentials, and personnel, which touch lamp stand, does not have potential difference, not will form electric current
Electric shock accidents occurs for circuit.When mono- fault ground of output end B is connect with ground wire C, then lamp stand is with output end B with the earth
Equipotential, personnel, which touch lamp stand, does not have potential difference, not will form current loop equally and electric shock accidents occurs.Circuit energy of the invention
Effectively improve the operation stability of traffic lights, moreover it is possible to and alarm security risk that may be present, make traffic lights
Maintenance becomes planned maintenance, the confusion of repairing and emergency processing caused by effectively avoiding traffic lights from having a power failure suddenly.
The above is only not to make limit in any form to the present invention to better embodiment of the invention
System, according to the technical essence of the invention any simple modification made to the above embodiment, equivalent variations and modification, belong to
In the range of technical solution of the present invention.
Claims (6)
1. a kind of traffic lights earth leakage protective device, including isolating transformer (1), Signalized control equipment (8) and several
It loads (9), it is characterised in that: the output terminals A and output end B of the isolating transformer (1) are connected to air switch (2)；
It further include alternating voltage current transducer (6), 1 one end of port of the alternating voltage current transducer (6) is connected to sky
Air cock (2), the other end are grounded C；2 one end of port of the alternating voltage current transducer (6) is connected to air switch
(2), the other end is grounded C；
The alternating voltage current transducer (6) connects alarm controller (7).
2. a kind of traffic lights earth leakage protective device according to claim 1, it is characterised in that: the output terminals A is logical
It crosses fuse one (4) and is connected to alternating voltage current transducer (6) and alarm controller (7), the output end B passes through fuse
Two (3) are connected to alternating voltage current transducer (6) and alarm controller (7).
3. a kind of traffic lights earth leakage protective device according to claim 1, it is characterised in that: the alternating current piezoelectricity
The port 3 of flow transmitter (6) is connected with current transformer (5).
4. a kind of traffic lights earth leakage protective device according to claim 1, it is characterised in that: the alarm controller
(7) it is alarmed using GPRS remote collection.
5. a kind of traffic lights earth leakage protecting method, it is characterised in that: the method is used such as any one of claim 1-4 institute
A kind of traffic lights earth leakage protective device stated, comprising the following steps:
The current value of port 3 is detected, while detecting the voltage value of port 1 and port 2, if detecting that port 1 or port 2 are appointed
There is voltage in one end, alarms then alternating voltage current transducer (6) send voltage signal to alarm controller (7).
6. a kind of traffic lights earth leakage protecting method according to claim 5, it is characterised in that: if detecting port
3 current value increases suddenly, then illustrates output terminals A and output end B while ground fault occur；If detecting that there is electricity in port 1
Pressure, then illustrate that ground fault occurs in output end B；If detecting that there is voltage in port 2, illustrate that ground fault occurs in output terminals A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544087.3A CN109449879A (en) | 2018-12-17 | 2018-12-17 | A kind of traffic lights earth leakage protective device and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811544087.3A CN109449879A (en) | 2018-12-17 | 2018-12-17 | A kind of traffic lights earth leakage protective device and its method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109449879A true CN109449879A (en) | 2019-03-08 |
Family
ID=65559016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811544087.3A Pending CN109449879A (en) | 2018-12-17 | 2018-12-17 | A kind of traffic lights earth leakage protective device and its method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109449879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113709956A (en) * | 2021-08-11 | 2021-11-26 | 国网河北省电力有限公司衡水供电分公司 | Light remote control system, transformer substation light remote control system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201274591Y (en) * | 2008-08-26 | 2009-07-15 | 张中强 | Safety control apparatus for road lamp |
| CN202939879U (en) * | 2012-11-08 | 2013-05-15 | 广东电网公司电力科学研究院 | Electrician training device grounded and additionally provided with leakage circuit breaker |
| CN206211509U (en) * | 2016-12-01 | 2017-05-31 | 西安科技大学 | A kind of detection and protection apparatus for leakage |
| CN206804804U (en) * | 2017-04-24 | 2017-12-26 | 绵阳莫仕科技有限公司 | A kind of laboratory power supply insulating monitoring electric safety system |
| CN209329674U (en) * | 2018-12-17 | 2019-08-30 | 陈军 | A kind of traffic lights earth leakage protective device |
-
2018
- 2018-12-17 CN CN201811544087.3A patent/CN109449879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201274591Y (en) * | 2008-08-26 | 2009-07-15 | 张中强 | Safety control apparatus for road lamp |
| CN202939879U (en) * | 2012-11-08 | 2013-05-15 | 广东电网公司电力科学研究院 | Electrician training device grounded and additionally provided with leakage circuit breaker |
| CN206211509U (en) * | 2016-12-01 | 2017-05-31 | 西安科技大学 | A kind of detection and protection apparatus for leakage |
| CN206804804U (en) * | 2017-04-24 | 2017-12-26 | 绵阳莫仕科技有限公司 | A kind of laboratory power supply insulating monitoring electric safety system |
| CN209329674U (en) * | 2018-12-17 | 2019-08-30 | 陈军 | A kind of traffic lights earth leakage protective device |
Non-Patent Citations (1)
| Title |
|---|
| 全国建筑电气设计技术协作及情报交流网: "《建筑电气设计技术新进展 2007年》", 四川科学技术出版社, pages: 201 - 208 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113709956A (en) * | 2021-08-11 | 2021-11-26 | 国网河北省电力有限公司衡水供电分公司 | Light remote control system, transformer substation light remote control system and method |
| CN113709956B (en) * | 2021-08-11 | 2023-10-31 | 国网河北省电力有限公司衡水供电分公司 | Light remote control system, transformer substation light remote control system and transformer substation light remote control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105765812B (en) | Method for the electric fault in detection circuit | |
| KR101442527B1 (en) | Earth leakage breaking device for electric shock prevention | |
| CN108183462A (en) | For the electric protective device and electrical equipment of electrical equipment | |
| CN108604494A (en) | Real-time detection/repair system when power distribution system source line fault and its construction method | |
| CN104007361B (en) | Ground fault detection circuit | |
| CN106443293A (en) | Direct current ground fault online detection and alarm device | |
| CN106849006A (en) | A kind of intelligence is with earth leakage protective electric water heater controller | |
| CN104466943B (en) | Safety equipment and method for electric facility | |
| CN104749484A (en) | Electric-leakage monitoring device | |
| CN103144651A (en) | Foreign invasion limiting monitoring system orienting to railway disaster prevention | |
| CN203444052U (en) | Medical isolation transformer with fault alarm and fault location functions | |
| CN103427394B (en) | A kind of mining explosion-isolating low-voltage selective earth leakage protection device | |
| CN214412259U (en) | IT power supply system earth leakage protection device | |
| CN105529681A (en) | Leakage protection circuit for low-voltage ungrounded system and realization method | |
| CN209329674U (en) | A kind of traffic lights earth leakage protective device | |
| CN109449879A (en) | A kind of traffic lights earth leakage protective device and its method | |
| CN103762557B (en) | The anti-open-circuit-protection method of current transformer | |
| CN206161764U (en) | Electric line earth leakage fault detection system based on signal trigger | |
| CN206002627U (en) | A kind of DC ground fault on-line checking and alarm device | |
| CN103311921B (en) | A kind of power supply entering line switch and bus connection switch interlock connection circuit | |
| CN103516053B (en) | A kind of outdoor lighting power distribution cabinet protection controller | |
| CN109283884A (en) | Gate equipotential intelligence conducting device | |
| CN105226634B (en) | A kind of (TT) distribution system | |
| CN204517394U (en) | There is the lightning protection device of self-checking function | |
| CN204216584U (en) | A kind of electric leakage indicating circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |