CN101087072A - Dual power switching control device - Google Patents
Dual power switching control device Download PDFInfo
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- CN101087072A CN101087072A CN 200710015545 CN200710015545A CN101087072A CN 101087072 A CN101087072 A CN 101087072A CN 200710015545 CN200710015545 CN 200710015545 CN 200710015545 A CN200710015545 A CN 200710015545A CN 101087072 A CN101087072 A CN 101087072A
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Abstract
A kind of double-power switch and control device is used to provide double loop power for automation control system such as electric power plant, it includes: A path and B path control system, the two are the same. In A path, coil in of power is connected with a middle relay and loops of two power relay via power protecting switch, then connected with several power output protection switches via power filter, one path of normal close junction of power relay is connected with A path power-fail alarming output terminal, the another path of normal close junction is cascaded with power relay of B path and connected with power-fail alarming output terminal of integral power switching box; A path and B path are connected by terminal. When any path of the invention is shorted or grounded, the protecting switch is cut off, normal working of the power switch can not be affected, and other four paths of current supply can not be affected too. When equipment in A path or B path is destroyed, middle connection can be cut off, control box of destroyed equipment can be removed for maintenance.
Description
Technical field
The present invention relates to a kind of switching control (a-b box) of double-cricuit supply being provided for GPA (microcomputer) control system, relate in particular to a kind of dual power switching control device that has improved.
Background technology
The dual power supply switching box of XDPS system of Shanghai Xinhua company, its circuit theory diagrams as shown in Figure 3, its inner capital equipment is: there are a mains switch SW1, auxiliary relay RL1, two power relay RL3 and RL5, two maintenance socket J1 and J2, power supply filter LB1, input and output terminal in the A road.The B road is the same with the A road, and a mains switch SW2, auxiliary relay RL2, two power relay RL4 and RL6, two maintenance socket J3 and J4, power supply filter LB2, input and output terminal are arranged.
Its operation principle: A road power supply meets uninterrupted power supply UPS, and B road power supply connects security personnel's section.Each road electric power incoming line inserts the coil of an auxiliary relay and two power relays.A road, this road power supply inserts the normal opened contact of this road auxiliary relay RL1 and the normally closed contact of B road, another road auxiliary relay RL2, the same connection in another road simultaneously.Power relay RL3, RL4 respectively have one road normally closed contact to report this road power supply dead electricity to report to the police, and respectively have the whole power supply a-b box dead electricity of one road normally closed contact series connection back newspaper to report to the police in addition.Under the normal condition, A, B two-way are powered simultaneously, start this road auxiliary relay and two power relays respectively, make their normal opened contact closures, and normally closed contact disconnects.A road power supply is delivered to lead-out terminal by the normal opened contact of this road auxiliary relay closure respectively, delivers to the normally closed contact of B road, another road auxiliary relay RL2 disconnection simultaneously and does standby switching usefulness.When A road power supply dead electricity, A road auxiliary relay RL1 dead electricity, normal opened contact disconnects, the normally closed contact closure, B road power supply gives for A road output by the normally closed contact of A road auxiliary relay RL1 closure.Normally closed junction closure during A road, this road alarm relay dead electricity sends A road, this road power supply dead electricity alarm signal.B road power work course of action is with the A road.
Former dual power supply switching box weak point: (1) five tunnel output (comprising socket) no short circuit or ground protection.One short out road is arranged in output loop in the A road, normal opened contact by auxiliary relay RL1 closure, cause the service entrance switch tripping operation of A road, auxiliary relay RL1 dead electricity, it is closed that normally closed contact recovers, short-circuit loop is the normally closed contact by auxiliary relay RL1 again, causes the service entrance switch tripping operation of B road, thereby causes the double loop dead electricity that all trips simultaneously.When one short out road was arranged in the output loop of B road, course of action was the same.(2) need overhaul when changing when a certain output institute carrying device, be inconvenient to cut off the power supply.(3) the two-way switching device is at same cabinet, and one tunnel fault is unfavorable for maintenance.
Summary of the invention
The purpose of this invention is to provide can not trip the simultaneously dual power switching control device of dead electricity of a kind of double loop.
For achieving the above object, the technical solution used in the present invention is:
A kind of dual power switching control device, it is characterized in that: comprising: A road control circuit and B road control circuit, A road control circuit comprises: power supply input protection switch SW 1, a plurality of power supply output protection switch SW 3, SW4, SW5, SW6, a power supply dead electricity warning lead-out terminal TM1, auxiliary relay RL1, two power relay RL3 and RL5, a power supply filter LB1; B road control circuit comprises: power supply input protection switch SW 2, a plurality of power supply output protection switch SW 7, SW8, SW9, SW10, a warning lead-out terminal TM2, auxiliary relay RL2, two power relay RL4 and RL6, a power supply filter LB2; In the control circuit of A road, electric power incoming line inserts the coil of an auxiliary relay RL1 and two power relay RL3 and RL5 by power supply input protection switch SW 1, meet a plurality of power supply output protection switch SW 3, SW4, SW5, SW6 respectively through power supply filter LB1 then, power relay RL3 has one road normally closed contact to meet A road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL4 in the control circuit of B road connects; In the control circuit of B road; electric power incoming line inserts the coil of an auxiliary relay RL2 and two power relay RL4 and RL6 by power supply input protection switch SW 2; meet a plurality of power supply output protection switch SW 7, SW8, SW9, SW10 respectively through power supply filter LB2 then; power relay RL4 has one road normally closed contact to meet B road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL3 in the control circuit of A road connects.
According to described dual power switching control device, it is characterized in that: connect by terminal TM or plug between described A road control circuit and the B road control circuit.
According to described dual power switching control device, it is characterized in that: be connected with maintenance socket J1, J2, J3, J4 in described A road control circuit and the B road control circuit respectively.
Beneficial effect of the present invention: when any one short out road or ground connection, this road protection switch or other fuses disconnect, and can not influence the operate as normal of mains switch SW1, SW2, also can not influence other power supplies of four tunnel in (1) output.(2) when the device damage in A road or the B road, connect in the middle of can disconnecting, pull down the control cabinet maintenance at device damage place.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is another kind of embodiment circuit theory diagrams of the present invention;
Fig. 3 is the circuit theory diagrams of the dual power supply switching box in the background technology of the present invention.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
The present invention improves to form on the basis of the circuit theory diagrams of dual power supply switching box shown in Figure 3.
(1) changes former output loop four road lead-out terminals into protection switch (comprising other fuses), or on the basis that keeps lead-out terminal, before or after it, increase a protection switch (comprising other fuses).
(2) A, B two-way control appliance are divided into two control cabinets, install respectively, connect by terminal or plug between A road control circuit and the B road control circuit.
The present invention as shown in Figure 1, comprise: A road control circuit and B road control circuit, A road control circuit comprises: power supply input protection switch SW 1, a plurality of power supply output protection switch SW 3, SW4, SW5, SW6, a power supply dead electricity warning lead-out terminal TM1, auxiliary relay RL1, two power relay RL3 and RL5, a power supply filter LB1; B road control circuit comprises: power supply input protection switch SW 2, a plurality of power supply output protection switch SW 7, SW8, SW9, SW10, a warning lead-out terminal TM2, auxiliary relay RL2, two power relay RL4 and RL6, a power supply filter LB2; In the control circuit of A road, electric power incoming line inserts the coil of an auxiliary relay RL1 and two power relay RL3 and RL5 by power supply input protection switch SW 1, meet a plurality of power supply output protection switch SW 3, SW4, SW5, SW6 respectively through power supply filter LB1 then, power relay RL3 has one road normally closed contact to meet A road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL4 in the control circuit of B road connects; In the control circuit of B road; electric power incoming line inserts the coil of an auxiliary relay RL2 and two power relay RL4 and RL6 by power supply input protection switch SW 2; meet a plurality of power supply output protection switch SW 7, SW8, SW9, SW10 respectively through power supply filter LB2 then; power relay RL4 has one road normally closed contact to meet B road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL3 in the control circuit of A road connects.
Connect by terminal TM or plug between described A road control circuit and the B road control circuit.
Be connected with maintenance socket J1, J2, J3, J4 in described A road control circuit and the B road control circuit respectively.
Its operation principle: A road power supply meets uninterrupted power supply UPS, and B road power supply connects security personnel's section.Each road electric power incoming line inserts the coil of an auxiliary relay and two power relays.A road, this road power supply inserts the normal opened contact of this road auxiliary relay RL1 and the normally closed contact of B road, another road auxiliary relay RL2, the same connection in another road simultaneously.Power relay RL3, RL4 respectively have one road normally closed contact to report this road power supply dead electricity to report to the police, and respectively have the whole power supply a-b box dead electricity of one road normally closed contact series connection back newspaper to report to the police in addition.Under the normal condition, A, B two-way are powered simultaneously, start this road auxiliary relay and two power relays respectively, make their normal opened contact closures, and normally closed contact disconnects.A road power supply is delivered to the output protection switch by the normal opened contact of this road auxiliary relay closure respectively, delivers to the normally closed contact of B road, another road auxiliary relay RL2 disconnection simultaneously and does standby switching usefulness.When A road power supply dead electricity, A road auxiliary relay RL1 dead electricity, normal opened contact disconnects, the normally closed contact closure, B road power supply gives for A road output by the normally closed contact of A road auxiliary relay RL1 closure.Normally closed junction closure during A road, this road alarm relay dead electricity sends A road, this road power supply dead electricity alarm signal.B road power work course of action is with the A road.
Claims (3)
1, a kind of dual power switching control device, it is characterized in that: comprising: A road control circuit and B road control circuit, A road control circuit comprises: power supply input protection switch SW 1, a plurality of power supply output protection switch SW 3, SW4, SW5, SW6, a power supply dead electricity warning lead-out terminal TM1, auxiliary relay RL1, two power relay RL3 and RL5, a power supply filter LB1; B road control circuit comprises: power supply input protection switch SW 2, a plurality of power supply output protection switch SW 7, SW8, SW9, SW10, a warning lead-out terminal TM2, auxiliary relay RL2, two power relay RL4 and RL6, a power supply filter LB2; In the control circuit of A road, electric power incoming line inserts the coil of an auxiliary relay RL1 and two power relay RL3 and RL5 by power supply input protection switch SW 1, meet a plurality of power supply output protection switch SW 3, SW4, SW5, SW6 respectively through power supply filter LB1 then, power relay RL3 has one road normally closed contact to meet A road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL4 in the control circuit of B road connects; In the control circuit of B road; electric power incoming line inserts the coil of an auxiliary relay RL2 and two power relay RL4 and RL6 by power supply input protection switch SW 2; meet a plurality of power supply output protection switch SW 7, SW8, SW9, SW10 respectively through power supply filter LB2 then; power relay RL4 has one road normally closed contact to meet B road power supply dead electricity warning lead-out terminal TM1, other one road normally closed contact with meet whole power supply a-b box dead electricity warning lead-out terminal TM1, TM2 respectively after power relay RL3 in the control circuit of A road connects.
2, dual power switching control device according to claim 1 is characterized in that: connect by terminal TM or plug between described A road control circuit and the B road control circuit.
3, dual power switching control device according to claim 1 and 2 is characterized in that: be connected with maintenance socket J1, J2, J3, J4 in described A road control circuit and the B road control circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015545 CN101087072A (en) | 2007-05-18 | 2007-05-18 | Dual power switching control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710015545 CN101087072A (en) | 2007-05-18 | 2007-05-18 | Dual power switching control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101087072A true CN101087072A (en) | 2007-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710015545 Pending CN101087072A (en) | 2007-05-18 | 2007-05-18 | Dual power switching control device |
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| CN (1) | CN101087072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368632A (en) * | 2011-11-13 | 2012-03-07 | 广州高澜节能技术股份有限公司 | Dual-power switching system |
| CN102842949A (en) * | 2011-06-22 | 2012-12-26 | 北京市电力公司 | System and method for selected tripping control of loop closing protection |
-
2007
- 2007-05-18 CN CN 200710015545 patent/CN101087072A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842949A (en) * | 2011-06-22 | 2012-12-26 | 北京市电力公司 | System and method for selected tripping control of loop closing protection |
| CN102842949B (en) * | 2011-06-22 | 2015-06-10 | 国家电网公司 | System and method for selected tripping control of loop closing protection |
| CN102368632A (en) * | 2011-11-13 | 2012-03-07 | 广州高澜节能技术股份有限公司 | Dual-power switching system |
| CN102368632B (en) * | 2011-11-13 | 2014-03-12 | 广州高澜节能技术股份有限公司 | Dual-power switching system |
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