CN103414238A - Downhole duplex feeding circuit preventing surges from power grid - Google Patents
Downhole duplex feeding circuit preventing surges from power grid Download PDFInfo
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- CN103414238A CN103414238A CN2013103665888A CN201310366588A CN103414238A CN 103414238 A CN103414238 A CN 103414238A CN 2013103665888 A CN2013103665888 A CN 2013103665888A CN 201310366588 A CN201310366588 A CN 201310366588A CN 103414238 A CN103414238 A CN 103414238A
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- circuit breaker
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- closed contact
- electrically connected
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Abstract
The invention discloses a downhole duplex feeding circuit preventing surges from a power grid, and the technical problem that an existing downhole dual-power-supply circuit easily surges the power grid is resolved. The downhole duplex feeding circuit is characterized in that a network interconnecting circuit breaker main contact is connected between the output end of a first circuit breaker main contact and the output end of a second circuit breaker main contact; transformers are arranged on two power supply buses, a first normally-closed contact of a network interconnecting circuit breaker is connected with a first normally-closed contact of a second circuit breaker in parallel and then is connected with a first circuit breaker switching knob and a first circuit breaker closing coil in series to form a control loop, a second normally-closed contact of the network interconnecting circuit breaker is connected with a first normally-closed contact of a first circuit breaker in parallel and then is connected with a second circuit breaker switching knob and a second circuit breaker closing coil in series, and a second normally-closed contact of the first circuit breaker is connected with a second normally-closed contact of the second circuit breaker in parallel and then is connected with a network interconnecting circuit breaker switching knob and a network interconnecting circuit breaker closing coil in series. The downhole duplex feeding circuit is especially suitable for being used underground.
Description
Technical field
The present invention relates to a kind of two-way power-supplying circuit, particularly a kind of double loop power supply power supply circuits of underground mine use.
Background technology
At present, under coal mine, all use the circuit bringing onto load that supplies power with double circuit, each bus is respectively its load supplying, when wherein a road bus has a power failure, for the load that makes its band can work, generally, in total power distribution equipment of two sections bussed supplies, interconnection switch is set, the load of the bus of power failure is connected on another road bus, when the power supply power transmission that has a power failure, the two-way power supply easily occurs and is simultaneously same load supplying in the sort circuit structure, and line voltage is impacted, and makes network system unreliable, affect whole electric power system, also can cause damage to power distribution equipment.
Summary of the invention
The invention provides a kind of avoiding and, to the down-hole that electrical network produce the to impact circuit that supplies power with double circuit, solved the technical problem that existing down-hole two-supply circuit easily impacts electrical network.
The present invention solves above technical problem by the following technical programs:
A kind of avoiding the down-hole that electrical network produce the to impact circuit that supplies power with double circuit, comprise the first power supply buses, the second power supply buses, the first load and the second load, the input of the first circuit breaker main contact is electrically connected to the first power supply buses, on the output of the first circuit breaker main contact, be connected with the first load, the input of the second circuit breaker main contact is electrically connected to the second power supply buses, on the output of the second circuit breaker main contact, be connected with the second load, between the output of the output of the first circuit breaker main contact and the second circuit breaker main contact, be connected with the network interconnecting circuit main contact, on the first power supply buses, be provided with the first transformer, an output of the first transformer is electrically connected to an end of the first breaker closing button, an end after the first normally-closed contact parallel connection of the first normally-closed contact of network interconnecting circuit and the second circuit breaker is electrically connected to the other end of the first breaker closing button, the other end after the first normally-closed contact parallel connection of the first normally-closed contact of network interconnecting circuit and the second circuit breaker is electrically connected to an end of the first breaker closing coil, and the other end of the first breaker closing coil is electrically connected to another output of the first transformer, on the second power supply buses, be provided with the second transformer, an output of the second transformer is electrically connected to an end of the second breaker closing button, an end after the first normally-closed contact parallel connection of the second normally-closed contact of network interconnecting circuit and the first circuit breaker is electrically connected to the other end of the second breaker closing button, the other end after the first normally-closed contact parallel connection of the second normally-closed contact of network interconnecting circuit and the first circuit breaker is electrically connected to an end of the second breaker closing coil, and the other end of the second breaker closing coil is electrically connected to another output of the second transformer, the input of system interconnection transformer is connected in parallel on the first power supply buses and the second power supply buses, an output of system interconnection transformer is electrically connected to an end of network interconnecting circuit switch knob, an end after the second normally-closed contact parallel connection of the second normally-closed contact of the first circuit breaker and the second circuit breaker is electrically connected to the other end of network interconnecting circuit switch knob, the other end after the second normally-closed contact parallel connection of the second normally-closed contact of the first circuit breaker and the second circuit breaker is electrically connected to an end of network interconnecting circuit closing coil, the other end of network interconnecting circuit closing coil is electrically connected to another output of system interconnection transformer.
The present invention has good stability, characteristics that reliability is high, has guaranteed the power supply safety under the coal mine.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
A kind of avoiding the down-hole that bus produce the to impact circuit that supplies power with double circuit, comprise the first power supply buses 16, the second power supply buses 20, the first load 21 and the second load 22, the input of the first circuit breaker main contact 17 is electrically connected to the first power supply buses 16, on the output of the first circuit breaker main contact 17, be connected with the first load 21, the input of the second circuit breaker main contact 19 is electrically connected to the second power supply buses 20, on the output of the second circuit breaker main contact 19, be connected with the second load 22, between the output of the output of the first circuit breaker main contact 17 and the second circuit breaker main contact 19, be connected with network interconnecting circuit main contact 18, on the first power supply buses 16, be provided with the first transformer 5, an output of the first transformer 5 is electrically connected to an end of the first breaker closing button 1, an end after the first normally-closed contact 3 parallel connections of the first normally-closed contact 2 of network interconnecting circuit and the second circuit breaker is electrically connected to the other end of the first breaker closing button 1, the other end after the first normally-closed contact 3 parallel connections of the first normally-closed contact 2 of network interconnecting circuit and the second circuit breaker is electrically connected to an end of the first breaker closing coil 4, the other end of the first breaker closing coil 4 is electrically connected to another output of the first transformer 5, on the second power supply buses 20, be provided with the second transformer 15, an output of the second transformer 15 is electrically connected to an end of the second breaker closing button 11, an end after the first normally-closed contact 13 parallel connections of the second normally-closed contact 12 of network interconnecting circuit and the first circuit breaker is electrically connected to the other end of the second breaker closing button 11, the other end after the first normally-closed contact 13 parallel connections of the second normally-closed contact 12 of network interconnecting circuit and the first circuit breaker is electrically connected to an end of the second breaker closing coil 14, the other end of the second breaker closing coil 14 is electrically connected to another output of the second transformer 15, the input of system interconnection transformer 10 is connected in parallel on the first power supply buses 16 and the second power supply buses 20, an output of system interconnection transformer 10 is electrically connected to an end of network interconnecting circuit switch knob 6, an end after the second normally-closed contact 8 parallel connections of the second normally-closed contact 7 of the first circuit breaker and the second circuit breaker is electrically connected to the other end of network interconnecting circuit switch knob 6, the other end after the second normally-closed contact 8 parallel connections of the second normally-closed contact 7 of the first circuit breaker and the second circuit breaker is electrically connected to an end of network interconnecting circuit closing coil 9, the other end of network interconnecting circuit closing coil 9 is electrically connected to another output of system interconnection transformer 10.
When the first power supply buses 16 and the second power supply buses 20 normal power supplies, and when network interconnecting circuit switch knob 6 is in off-state, the first breaker closing button 1 and the second breaker closing button 11 are on-state, because being in off-state, network interconnecting circuit switch knob 6 make the first normally-closed contact 2 of network interconnecting circuit and the second normally-closed contact 12 of network interconnecting circuit all be in normally off, the first power supply buses 16 and the second power supply buses 20 normal power supplies also make the first transformer 5 and the second transformer 15 be in electricity condition, the first breaker closing coil 4 and the second breaker closing coil 14 obtain electric, make the first circuit breaker main contact 17 and the second circuit breaker main contact 19 all be in attracting state, at this moment first circuit breaker the second normally-closed contact 7 and second circuit breaker the second normally-closed contact 8 are to be in open mode, although system interconnection transformer 10 is in, electricity condition is arranged, even press by force network interconnecting circuit switch knob 6, network interconnecting circuit closing coil 9 still can not obtain electric, reach the first power supply buses 16 and the second power supply buses 20 and can not be simultaneously same load supplying, and cause the impact of two-way power supply.
When the first power supply buses 16 or the second power supply buses 20 power failure, making has one to be in attracting state in first circuit breaker the second normally-closed contact 7 and second circuit breaker the second normally-closed contact 8, owing to needing only the first power supply buses 16 or the second power supply buses 20You mono-tunnel, electricity is arranged, system interconnection transformer 10 all is in electricity condition, as long as press network interconnecting circuit switch knob 6, just can make network interconnecting circuit closing coil 9 that electricity is arranged, cause network interconnecting circuit main contact 18 closures, the load had a power failure is in by the state of another road Power supply.
At the first power supply buses 16 normal power supplies, and under the second power supply buses 20 power down modes, at this moment the first normally-closed contact 13 of the first circuit breaker is opened, the second normally-closed contact 12 of network interconnecting circuit is also opened, if when the second power supply buses 20 was sent a telegram here suddenly, the second transformer 15 is in electricity condition, even press by force the second breaker closing button 11, can not cause the second breaker closing coil 14 to obtain electric yet, make the second circuit breaker main contact 19 adhesives.Otherwise, at the first power supply buses 16, have a power failure, and under the second power supply buses 20 normal power supply states, at this moment the first normally-closed contact 3 of the second circuit breaker is opened, and the first normally-closed contact 2 of network interconnecting circuit is also opened, if when the first power supply buses 16 is sent a telegram here suddenly, the first transformer 5 is in electricity condition is arranged, even press by force the first breaker closing button 1, can not cause the first breaker closing coil 4 to obtain electric yet, make the first circuit breaker main contact 17 adhesives.The present invention has guaranteed that from structure same load can not allow the two-way power supply power simultaneously, causes the impact of two-way power supply.
Claims (1)
1. avoid the down-hole that electrical network produce the to impact circuit that supplies power with double circuit for one kind, comprise the first power supply buses (16), the second power supply buses (20), the first load (21) and the second load (22), the input of the first circuit breaker main contact (17) is electrically connected to the first power supply buses (16), on the output of the first circuit breaker main contact (17), be connected with the first load (21), the input of the second circuit breaker main contact (19) is electrically connected to the second power supply buses (20), on the output of the second circuit breaker main contact (19), be connected with the second load (22), it is characterized in that, between the output of the output of the first circuit breaker main contact (17) and the second circuit breaker main contact (19), be connected with network interconnecting circuit main contact (18), on the first power supply buses (16), be provided with the first transformer (5), an output of the first transformer (5) is electrically connected to an end of the first breaker closing button (1), an end after the first normally-closed contact (3) parallel connection of first normally-closed contact (2) of network interconnecting circuit and the second circuit breaker is electrically connected to the other end of the first breaker closing button (1), the other end after the first normally-closed contact (3) parallel connection of first normally-closed contact (2) of network interconnecting circuit and the second circuit breaker is electrically connected to an end of the first breaker closing coil (4), the other end of the first breaker closing coil (4) is electrically connected to another output of the first transformer (5), on the second power supply buses (20), be provided with the second transformer (15), an output of the second transformer (15) is electrically connected to an end of the second breaker closing button (11), an end after the first normally-closed contact (13) parallel connection of second normally-closed contact (12) of network interconnecting circuit and the first circuit breaker is electrically connected to the other end of the second breaker closing button (11), the other end after the first normally-closed contact (13) parallel connection of second normally-closed contact (12) of network interconnecting circuit and the first circuit breaker is electrically connected to an end of the second breaker closing coil (14), the other end of the second breaker closing coil (14) is electrically connected to another output of the second transformer (15), the input of system interconnection transformer (10) is connected in parallel on the first power supply buses (16) and the second power supply buses (20), an output of system interconnection transformer (10) is electrically connected to an end of network interconnecting circuit switch knob (6), an end after the second normally-closed contact (8) parallel connection of second normally-closed contact (7) of the first circuit breaker and the second circuit breaker is electrically connected to the other end of network interconnecting circuit switch knob (6), the other end after the second normally-closed contact (8) parallel connection of second normally-closed contact (7) of the first circuit breaker and the second circuit breaker is electrically connected to an end of network interconnecting circuit closing coil (9), the other end of network interconnecting circuit closing coil (9) is electrically connected to another output of system interconnection transformer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366588.8A CN103414238B (en) | 2013-08-21 | 2013-08-21 | Downhole duplex feeding circuit preventing surges from power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310366588.8A CN103414238B (en) | 2013-08-21 | 2013-08-21 | Downhole duplex feeding circuit preventing surges from power grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103414238A true CN103414238A (en) | 2013-11-27 |
| CN103414238B CN103414238B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310366588.8A Active CN103414238B (en) | 2013-08-21 | 2013-08-21 | Downhole duplex feeding circuit preventing surges from power grid |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0533175A2 (en) * | 1991-09-17 | 1993-03-24 | Hitachi, Ltd. | A controller for electric power distribution apparatus |
| CN2694588Y (en) * | 2004-03-26 | 2005-04-20 | 佛山市创电电源设备有限公司 | Uninterruption power source two-way input automatic switching equipment |
| CN201174621Y (en) * | 2008-03-28 | 2008-12-31 | 宁波天安（集团）股份有限公司 | Automatic switching control apparatus of double power supply |
| CN101425685A (en) * | 2008-08-15 | 2009-05-06 | 国电南瑞科技股份有限公司 | Internal bridge connecting and protection implementing method for linkage standby electricity supply mode |
| CN203504274U (en) * | 2013-08-21 | 2014-03-26 | 山西汾西机电有限公司 | Downhole dual-circuit power-supply circuit preventing impact on power grid |
-
2013
- 2013-08-21 CN CN201310366588.8A patent/CN103414238B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0533175A2 (en) * | 1991-09-17 | 1993-03-24 | Hitachi, Ltd. | A controller for electric power distribution apparatus |
| CN2694588Y (en) * | 2004-03-26 | 2005-04-20 | 佛山市创电电源设备有限公司 | Uninterruption power source two-way input automatic switching equipment |
| CN201174621Y (en) * | 2008-03-28 | 2008-12-31 | 宁波天安（集团）股份有限公司 | Automatic switching control apparatus of double power supply |
| CN101425685A (en) * | 2008-08-15 | 2009-05-06 | 国电南瑞科技股份有限公司 | Internal bridge connecting and protection implementing method for linkage standby electricity supply mode |
| CN203504274U (en) * | 2013-08-21 | 2014-03-26 | 山西汾西机电有限公司 | Downhole dual-circuit power-supply circuit preventing impact on power grid |
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| Publication number | Publication date |
|---|---|
| CN103414238B (en) | 2015-06-10 |
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