CN102882135A - Locking device for high current ring main unit - Google Patents
Locking device for high current ring main unit Download PDFInfo
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- CN102882135A CN102882135A CN2012103896341A CN201210389634A CN102882135A CN 102882135 A CN102882135 A CN 102882135A CN 2012103896341 A CN2012103896341 A CN 2012103896341A CN 201210389634 A CN201210389634 A CN 201210389634A CN 102882135 A CN102882135 A CN 102882135A
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Abstract
The invention discloses a locking device for a high current ring main unit. The device comprises a 10KV ring main unit which is connected between an upper port power supply and a lower port power supply, and fusers, a vacuum load switch, a first voltage mutual inductor and a second voltage mutual inductor which are arranged in the 10KV ring main unit, wherein the vacuum load switch comprises a circuit breaker QL and a locking switch; two ends of the circuit breaker are connected with six fusers; the six fusers are connected with three phases of circuits of the upper port power supply and the lower port power supply respectively; a primary side of the first voltage mutual inductor is connected between any two phases of circuits among the three phases of the upper port power supply; a primary side of the second voltage mutual inductor is connected between any two phases of circuits among the three phases of the upper port power supply; and secondary sides of the first voltage mutual inductor and the second voltage mutual inductor are connected with the locking switch of the vacuum load switch respectively. By the locking device for the high current ring main unit, the locking function of the high current ring main unit is realized, and the electrical safety and reliable operation of the high current ring main unit are ensured.
Description
Technical field
The present invention relates to a kind of large electric current ring main unit, specifically a kind of locking device of large electric current ring main unit.
Background technology
The danger of electricity is that it cannot see, particularly after high voltage alive equipment breaks down, because the uncertainty that whether charged it is and equipment do not have obvious warning way, be easy to cause the operations such as operating personnel's false touch electrified body or mistake splice grafting ground switch, cause loss of life or personal injury, device damage or power grid accident.Although the caution system of some charged demonstrations is arranged at present, be that 201020665821.4 Chinese patent discloses and a kind ofly sends the warning tape electricity detecting system with blinking light such as the patent No., but it just sends caution by the single mode of flash of light, can not send remote signal and automatically lock door of switch cabinet or grounding switch.This defective might cause the operating personnel in the situation of charged warning lamp flicker, and false release is opened charged door of switch cabinet or the grounding switch that closes, and causes loss of life or personal injury or device damage accident.
Although it is supporting that 10KV vacuum-load ring main unit generally is used for the following transformer of 10KV, 1000KVA; can realize the protection of electric separating brake, combined floodgate and transformer; but; when supporting for the above transformer of 1000KVA; only have after the outage of higher level's circuit breaker and can operate vacuum load switch; therefore, need to install locking device additional to 10KV vacuum-load ring main unit and guarantee the electrical safety reliability service.
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of locking device of large electric current ring main unit, it not only can avoid hot line job, and can guarantee electrical safety and reliability service.
The technical solution adopted for the present invention to solve the technical problems is: the locking device of large electric current ring main unit, comprise and be connected to the 10KV ring main unit between power supply suitable for reading and the end opening power supply and be arranged on 10KV ring main unit interior fuse and vacuum load switch, it is characterized in that, also comprise the first voltage transformer and second voltage instrument transformer, described vacuum load switch comprises circuit breaker Q L and latch switch, the two ends of described circuit breaker are connected with six fuses, described six fuses are connected three-phase line with power supply suitable for reading respectively and are connected with the end opening power supply, the primary side of described the first voltage transformer is connected between arbitrary two-phase circuit in the power supply three-phase suitable for reading, the primary side of described second voltage instrument transformer is connected between arbitrary two-phase circuit in the power supply three-phase suitable for reading, and described the first voltage transformer is connected secondary side and is connected with the latch switch of vacuum load switch respectively with the second voltage instrument transformer.
Further, described locking device also comprises the electrification display that is arranged on the 10KV ring main unit, described electrification display comprises power supply electrification display suitable for reading and end opening power supply display, three current sensors of described power supply electrification display suitable for reading are separately positioned in the three-phase line of power supply suitable for reading, and three current sensors of described end opening power supply electrification display are separately positioned in the three-phase line of end opening power supply.
Preferably, the primary side two ends of described the first voltage transformer TV1 are connected between the arbitrary two-phase line fuse and circuit breaker in the power supply three-phase suitable for reading, and the secondary side two ends are connected with the latch switch of vacuum load switch by fuse respectively.
Preferably, the primary side two ends of described second voltage instrument transformer TV2 are connected between the arbitrary two-phase line fuse and circuit breaker in the end opening power supply three-phase, and the secondary side two ends are connected with the latch switch of vacuum load switch by fuse respectively.
The present invention has following outstanding beneficial effect: after adopting said structure, the present invention has realized the blocking function of large electric current ring main unit, reach the 10KV mains side when charged vacuum load switch must not close a floodgate, separating brake, vacuum load switch be can operate after only having the outage of higher level's circuit breaker, thereby electrical safety and the reliability service of large electric current ring main unit guaranteed.In addition, show the charged situation of power supply suitable for reading and end opening power supply by electrification display is set, avoided charged misoperation.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the connecting circuit figure of the first voltage transformer TV1 of the present invention;
Fig. 3 is the connecting circuit figure of second voltage instrument transformer TV2 of the present invention.
Embodiment
As shown in Figure 1, the locking device of a kind of large electric current ring main unit of the present invention, comprise being connected to the 10KV ring main unit between power supply suitable for reading and the end opening power supply and being arranged on 10KV ring main unit interior fuse, vacuum load switch, the first voltage transformer TV1 and second voltage instrument transformer TV2, and be arranged on the electrification display on the ring main unit.Described vacuum load switch comprises circuit breaker Q L and latch switch, the two ends of described circuit breaker Q L are connected with respectively FU11, FU12, FU13, FU21, six fuses of FU22 and FU23, wherein, FU11, FU12 and FU13 respectively with the A1 of power supply suitable for reading mutually, B1 phase and C1 be connection mutually, FU21, FU22 and FU23 respectively with the A2 of end opening power supply mutually, B2 phase and C2 be connection mutually, the primary side of described the first voltage transformer TV1 is connected between the A1 phase and C1 phase two-phase circuit of power supply suitable for reading, the primary side of described second voltage instrument transformer TV2 is connected between the A2 phase and C2 phase two-phase circuit of end opening power supply, and described the first voltage transformer TV1 is connected secondary side and is connected with the latch switch of vacuum load switch respectively with second voltage instrument transformer TV2.Described electrification display comprises power supply electrification display suitable for reading and end opening power supply display, three current sensor TA11, TA12 and the TA13 of described power supply electrification display suitable for reading are separately positioned among A1, the B1 and C1 three-phase line of power supply suitable for reading, three current sensor TA21, TA22 and the TA23 of described end opening power supply electrification display are separately positioned among A2, the B2 and C3 three-phase line of end opening power supply, in order to show respectively the charged situation of power supply suitable for reading and end opening power supply.
As shown in Figure 2, the primary side two ends of described the first voltage transformer TV1 are connected between the A1 phase line fuse FU11 and C1 phase line fuse FU13 and circuit breaker of power supply suitable for reading, and the secondary side two ends are connected with the latch switch coil SQ1 of vacuum load switch with FU32 by fuse FU31 respectively.
As shown in Figure 3, the primary side two ends of described second voltage instrument transformer TV2 are connected between the A2 phase line fuse FU21 and C2 phase line fuse FU23 and circuit breaker of end opening power supply, and the secondary side two ends are connected with the latch switch coil SQ2 of vacuum load switch with FU34 by fuse FU33 respectively.
The description that above-described embodiment carries out the present invention; it is not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (4)
1. the locking device of large electric current ring main unit, comprise and be connected to the 10KV ring main unit between power supply suitable for reading and the end opening power supply and be arranged on 10KV ring main unit interior fuse and vacuum load switch, it is characterized in that, also comprise the first voltage transformer TV1 and second voltage instrument transformer TV2, described vacuum load switch comprises circuit breaker Q L and latch switch, the two ends of described circuit breaker are connected with six fuses, described six fuses are connected three-phase line with power supply suitable for reading respectively and are connected with the end opening power supply, the primary side of described the first voltage transformer TV1 is connected between arbitrary two-phase circuit in the power supply three-phase suitable for reading, the primary side of described second voltage instrument transformer TV2 is connected between arbitrary two-phase circuit in the end opening power supply three-phase, and described the first voltage transformer TV1 is connected secondary side and is connected with the latch switch of vacuum load switch respectively with second voltage instrument transformer TV2.
2. the locking device of large electric current ring main unit according to claim 1, it is characterized in that, also comprise the electrification display that is arranged on the 10KV ring main unit, described electrification display comprises power supply electrification display suitable for reading and end opening power supply display, three current sensors of described power supply electrification display suitable for reading are separately positioned in the three-phase line of power supply suitable for reading, and three current sensors of described end opening power supply electrification display are separately positioned in the three-phase line of end opening power supply.
3. the locking device of large electric current ring main unit according to claim 1, it is characterized in that, the primary side two ends of described the first voltage transformer TV1 are connected between the arbitrary two-phase line fuse and circuit breaker in the power supply three-phase suitable for reading, and the secondary side two ends are connected with the latch switch of vacuum load switch by fuse respectively.
4. the locking device of large electric current ring main unit according to claim 1, it is characterized in that, the primary side two ends of described second voltage instrument transformer TV2 are connected between the arbitrary two-phase line fuse and circuit breaker in the end opening power supply three-phase, and the secondary side two ends are connected with the latch switch of vacuum load switch by fuse respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103896341A CN102882135A (en) | 2012-10-15 | 2012-10-15 | Locking device for high current ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103896341A CN102882135A (en) | 2012-10-15 | 2012-10-15 | Locking device for high current ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102882135A true CN102882135A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103896341A Pending CN102882135A (en) | 2012-10-15 | 2012-10-15 | Locking device for high current ring main unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN102882135A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2038275U (en) * | 1988-04-25 | 1989-05-24 | 国营梅岭化工厂 | Electromagnetic locking device with double electric power supply applicable to both inlet and outlet wire |
| US5151842A (en) * | 1991-04-19 | 1992-09-29 | General Electric Company | Switchboards and panelboards having interlock and load selection capabilities |
| CN2603553Y (en) * | 2003-02-14 | 2004-02-11 | 北京电研华源电力技术有限公司 | Circuit breaker type cable branching box |
| CN201289965Y (en) * | 2008-11-07 | 2009-08-12 | 安徽中安恒宇电气传动有限公司 | Looped network cabinet |
| CN202856168U (en) * | 2012-10-15 | 2013-04-03 | 济南济变志亨电力设备有限公司 | Locking device of heavy-current ring main unit |
-
2012
- 2012-10-15 CN CN2012103896341A patent/CN102882135A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2038275U (en) * | 1988-04-25 | 1989-05-24 | 国营梅岭化工厂 | Electromagnetic locking device with double electric power supply applicable to both inlet and outlet wire |
| US5151842A (en) * | 1991-04-19 | 1992-09-29 | General Electric Company | Switchboards and panelboards having interlock and load selection capabilities |
| CN2603553Y (en) * | 2003-02-14 | 2004-02-11 | 北京电研华源电力技术有限公司 | Circuit breaker type cable branching box |
| CN201289965Y (en) * | 2008-11-07 | 2009-08-12 | 安徽中安恒宇电气传动有限公司 | Looped network cabinet |
| CN202856168U (en) * | 2012-10-15 | 2013-04-03 | 济南济变志亨电力设备有限公司 | Locking device of heavy-current ring main unit |
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |