CN105207344A - Security power supply system and control method thereof - Google Patents
Security power supply system and control method thereof Download PDFInfo
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- CN105207344A CN105207344A CN201410250635.7A CN201410250635A CN105207344A CN 105207344 A CN105207344 A CN 105207344A CN 201410250635 A CN201410250635 A CN 201410250635A CN 105207344 A CN105207344 A CN 105207344A
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Abstract
The invention provides a security power supply system and a control method thereof. The security power supply is formed by a 1# power supply, a 2# power supply, and a diesel generator security power supply, switches ZK1, ZK2, and ZK3 are respectively arranged between a security bus and the 1# power supply, the 2# power supply, and a diesel generator, a loop of the ZK1 and ZK2 is provided with a voltage transformer, time delays are arranged at the ZK1 and the ZK2, and a diesel generator start-stop loop is additionally provided. When power is supplied to the security bus by the ZK1, the voltage transformer is detected to be powered off, a spare power automatic switching device turns off the ZK1 in a time delay manner and turns on the ZK2, and the power supply is recovered. When the 1# power supply and the 2# power supply are both turned off, the spare power automatic switching device fails to operate, the time delays trip out, the voltage transformer is turned off, an intermediate relay is turned on, the diesel generator starts to operate and turn on the ZK3 when boosted to the rated voltage, and the power supply of the security bus is completed. When the 1# power supply or the 2# power supply recovers power delivery, the power supply of the diesel generator is stopped via a hand-operated button. According to the security power supply system and the control method thereof, reliable power supply of the security power supply in various fault conditions can be guaranteed, the damage to equipment is avoided, normal operation of the equipment is guaranteed, and gas leakage is prevented.
Description
Technical field
The invention belongs to field of electrical control, particularly a kind of emergency power supply system and autocontrol method thereof guaranteeing power supply reliability.
Background technology
At present; emergency power supply system is equipped with in a lot of industrial enterprise; emergency power supply is as the most important power supply of gas turbine generator group; when power cut of whole factory; emergency power supply will be born the most important protective load of unit and power; once the emergency power supply system failure; the key equipments such as turning gear of unit motor, grease pump are stopped transport; unit rotor stall when hot will cause rotor bow; need after rotor bow to return factory and office's reason; not only need to spend huge maintenance cost, and unit will can not run for a long time, affects economic benefit.Therefore have a set of independence reliable emergency power supply system Shi Ge industrial enterprise and ensure the prerequisite that production is carried out smoothly and necessary condition.
Summary of the invention
The invention provides a kind of emergency power supply system and control method thereof; be intended to the reliability solving industrial enterprise's emergency power supply system power supply; guarantee unit safe shutdown in the state of accident, thus avoid device damage and personal safety accident, ensure carrying out smoothly of production.
For this reason, the solution that the present invention takes is:
A kind of emergency power supply system, its security personnel's bussed supply power supply is made up of 1# power supply and 2# power supply two-way normal power supply power supply and a road diesel engine generator emergency power supply, realizes for subsequent use each other of two-way power supply by standby power switching device and prepared auto restart; Be provided with switch 1ZK between 1# power supply and security personnel's bus, be provided with switch 2ZK, be provided with gate out switch 3ZK between security personnel's bus and diesel engine generator between 2# power supply and security personnel's bus, security personnel's bus is provided with voltage transformer pt; Be provided with the time relay KT1 of dead electricity delay tripping at switch 1ZK place, switch 2ZK place is provided with time relay KT2; Simultaneously; in diesel engine generator start and stop loop, increase generator start stopping locked loop; comprise switch QF, auxiliary relay KA, button PB and voltage transformer pt secondary relay dry contact QD; before and after auxiliary relay KA, connecting valve QF is connected voltage transformer pt secondary relay dry contact QD with button PB, the button PB other end respectively, realizes diesel engine generator and starts rear self-sustaining.
A control method for emergency power supply system, is characterized in that:
1, automatic control when 1# power supply and 2# power supply wherein have a road to have a power failure
When bus of ensuring public security is powered by 1# mains switch 1ZK, 1# power outage or 1ZK tripping operation, security personnel's bus-bar potential transformer PT detects dead electricity, starts prepared auto restart, by backup auto-activating device through time delay tripping 1ZK, closes 2# mains switch 2ZK, security personnel's bus power up.
When bus of ensuring public security is powered by 2# mains switch 2ZK, 2# power outage or 2ZK tripping operation, security personnel's bus-bar potential transformer PT dead electricity, starts prepared auto restart, by backup auto-activating device through time delay tripping 2ZK, closes 1# mains switch 1ZK, security personnel's bus power up.
2, automatic control when 1# power supply and 2# power supply all have a power failure
The prepared auto restart tripping when two-way service power full cut-off electricity, 1# mains switch 1ZK, 2# mains switch 2ZK will be tripped by the time relay KT1, KT2 respectively, now security personnel's bus-bar potential transformer PT dead electricity, its secondary relay dry contact QD closes, auxiliary relay KA obtains electric and self-sustaining, and diesel engine generator starts; Close a floodgate when diesel engine generator boosts to rated voltage its gate out switch 3ZK, completes security personnel's bus section, busbar section and power.
3, when after 1# power supply or 2# power up power transmission, hand push button PB stops diesel engine generator powering.
Beneficial effect of the present invention is:
The present invention can ensure emergency power supply reliable power supply under various fault ' conditions.Unit safe shutdown in the state of accident can not only be ensured, equipment is not damaged, can ensure that each coal gas system proterctive equipment normally runs simultaneously, prevent gas leak, guarantee the safety of the person.
The present invention has the advantage that control system is simple, cost of equipment is less, is applicable to the emergency power supply system of other industry completely.
Accompanying drawing explanation
Fig. 1 is emergency power supply system primary connection figure;
Fig. 2 is that diesel engine generator starts stopping locked loop figure;
Fig. 3 is diesel engine generator automatic control flow chart figure under full power-off condition.
Embodiment
As seen from Figure 1, security personnel's bussed supply power supply system of emergency power supply system of the present invention is made up of 1# power supply and 2# power supply two-way normal power supply power supply and a road diesel engine generator emergency power supply, realizes for subsequent use each other of two-way power supply by standby power switching device and prepared auto restart.Be provided with switch ZK1 between 1# power supply and security personnel's bus 1, be provided with switch ZK2, be provided with gate out switch ZK3 between security personnel's bus 1 and diesel engine generator 2 between 2# power supply and security personnel's bus 1, security personnel's bus is provided with voltage transformer pt; Be provided with the time relay KT1 of dead electricity delay tripping at switch ZK1 place, switch ZK2 place is provided with time relay KT2; Simultaneously; in diesel engine generator 2 start and stop loop, increase generator start stopping locked loop; comprise switch QF, auxiliary relay KA, button PB and voltage transformer pt secondary relay dry contact QD; before and after auxiliary relay KA, connecting valve QF is connected voltage transformer pt secondary relay dry contact QD with button PB, the button PB other end respectively, and (see Fig. 2) realizes diesel engine generator and start rear self-sustaining.
The control method of emergency power supply system of the present invention comprises the control method under three kinds of different situations:
Automatic control when the first situation and 1# power supply and 2# power supply wherein have a road to have a power failure
When bus 1 of ensuring public security is powered by 1# mains switch ZK1,1# power outage or ZK1 tripping operation, the voltage transformer pt of security personnel's bus 1 detects dead electricity, starts prepared auto restart, by backup auto-activating device through time delay tripping ZK1, closes 2# mains switch ZK2, security personnel's bus 1 power up.
When bus 1 of ensuring public security is powered by 2# mains switch ZK2,2# power outage or ZK2 tripping operation, the voltage transformer pt dead electricity of security personnel's bus 1, starts prepared auto restart, by backup auto-activating device through time delay tripping ZK2, closes 1# mains switch ZK1, security personnel's bus 1 power up.
Automatic control when the second situation and 1# power supply and 2# power supply all have a power failure
When 1# power supply and 2# power supply full cut-off electricity, prepared auto restart tripping, 1# mains switch ZK1,2# mains switch ZK2 will be tripped by the time relay KT1, KT2 respectively, the now voltage transformer pt dead electricity of security personnel's bus 1, its secondary relay dry contact QD closes, auxiliary relay KA obtains electric and self-sustaining, and diesel engine generator 2 starts; Close a floodgate when diesel engine generator 2 boosts to rated voltage its gate out switch ZK3, completes the power supply of security personnel's bus 1 section.
The third situation, namely when after 1# power supply or 2# power up power transmission, manual depression of button PB, stops diesel engine generator 2 to power.
Claims (2)
1. an emergency power supply system, is characterized in that, security personnel's bussed supply power supply is made up of 1# power supply and 2# power supply two-way normal power supply power supply and a road diesel engine generator emergency power supply, realizes for subsequent use each other of two-way power supply by standby power switching device and prepared auto restart; Be provided with switch ZK1 between 1# power supply and security personnel's bus, be provided with switch ZK2, be provided with gate out switch ZK3 between security personnel's bus and diesel engine generator between 2# power supply and security personnel's bus, security personnel's bus is provided with voltage transformer pt; Be provided with the time relay KT1 of dead electricity delay tripping at switch ZK1 place, switch ZK2 place is provided with time relay KT2; Simultaneously; in diesel engine generator start and stop loop, increase generator start stopping locked loop; comprise switch QF, auxiliary relay KA, button PB and voltage transformer pt secondary relay dry contact QD; before and after auxiliary relay KA, connecting valve QF is connected voltage transformer pt secondary relay dry contact QD with button PB, the button PB other end respectively, realizes diesel engine generator and starts rear self-sustaining.
2. a control method for emergency power supply system as claimed in claim 1, is characterized in that:
(1) automatic control when 1# power supply and 2# power supply wherein have a road to have a power failure
When bus of ensuring public security is powered by 1# mains switch ZK1,1# power outage or ZK1 tripping operation, security personnel's bus-bar potential transformer PT detects dead electricity, starts prepared auto restart, by backup auto-activating device through time delay tripping ZK1, closes 2# mains switch ZK2, security personnel's bus power up;
When bus of ensuring public security is powered by 2# mains switch ZK2,2# power outage or ZK2 tripping operation, security personnel's bus-bar potential transformer PT dead electricity, starts prepared auto restart, by backup auto-activating device through time delay tripping ZK2, closes 1# mains switch ZK1, security personnel's bus power up;
(2) automatic control when 1# power supply and 2# power supply all have a power failure
The prepared auto restart tripping when two-way service power full cut-off electricity, 1# mains switch ZK1,2# mains switch ZK2 will be tripped by the time relay KT1, KT2 respectively, now security personnel's bus-bar potential transformer PT dead electricity, its secondary relay dry contact QD closes, auxiliary relay KA obtains electric and self-sustaining, and diesel engine generator starts; Close a floodgate when diesel engine generator boosts to rated voltage its gate out switch ZK3, completes security personnel's bus section, busbar section and power;
(3), when after 1# power supply or 2# power up power transmission, hand push button PB stops diesel engine generator powering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410250635.7A CN105207344A (en) | 2014-06-09 | 2014-06-09 | Security power supply system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410250635.7A CN105207344A (en) | 2014-06-09 | 2014-06-09 | Security power supply system and control method thereof |
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| CN105207344A true CN105207344A (en) | 2015-12-30 |
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| CN201410250635.7A Pending CN105207344A (en) | 2014-06-09 | 2014-06-09 | Security power supply system and control method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655478A (en) * | 2017-01-25 | 2017-05-10 | 云南水务投资股份有限公司 | Low-voltage emergency safety power supply system of household garbage power plant and control method of system |
| CN107528241A (en) * | 2017-07-27 | 2017-12-29 | 杭州电力设备制造有限公司 | A kind of three pairs of cabinet spare powers and automatic switching method |
| CN108173338A (en) * | 2016-12-07 | 2018-06-15 | 南京南瑞继保电气有限公司 | A kind of rail traction in automatically switch busbar voltage device |
| CN109193912A (en) * | 2018-11-01 | 2019-01-11 | 西安热工研究院有限公司 | A kind of diesel-driven generator back-up system based on power plant energy storage auxiliary frequency modulation |
| CN113193563A (en) * | 2021-02-04 | 2021-07-30 | 西安热工研究院有限公司 | System and method for preventing power loss of security power supply of power plant caused by overload of diesel generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090212630A1 (en) * | 2007-05-09 | 2009-08-27 | Flegel Michael O | Apparatus And Method For Powering Load Center Circuits With An Auxiliary Power Source |
| CN102231563A (en) * | 2011-06-27 | 2011-11-02 | 内蒙古电力勘测设计院 | Spare power automatic switching control system for safety power supply of power station |
| CN203537057U (en) * | 2013-11-07 | 2014-04-09 | 大唐湘潭发电有限责任公司 | Thermal power plant power system with double-path emergency stand-by power supply |
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2014
- 2014-06-09 CN CN201410250635.7A patent/CN105207344A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090212630A1 (en) * | 2007-05-09 | 2009-08-27 | Flegel Michael O | Apparatus And Method For Powering Load Center Circuits With An Auxiliary Power Source |
| CN102231563A (en) * | 2011-06-27 | 2011-11-02 | 内蒙古电力勘测设计院 | Spare power automatic switching control system for safety power supply of power station |
| CN203537057U (en) * | 2013-11-07 | 2014-04-09 | 大唐湘潭发电有限责任公司 | Thermal power plant power system with double-path emergency stand-by power supply |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173338A (en) * | 2016-12-07 | 2018-06-15 | 南京南瑞继保电气有限公司 | A kind of rail traction in automatically switch busbar voltage device |
| CN106655478A (en) * | 2017-01-25 | 2017-05-10 | 云南水务投资股份有限公司 | Low-voltage emergency safety power supply system of household garbage power plant and control method of system |
| CN107528241A (en) * | 2017-07-27 | 2017-12-29 | 杭州电力设备制造有限公司 | A kind of three pairs of cabinet spare powers and automatic switching method |
| CN107528241B (en) * | 2017-07-27 | 2024-05-28 | 杭州电力设备制造有限公司 | Three-double-cabinet spare power switching device and automatic switching method |
| CN109193912A (en) * | 2018-11-01 | 2019-01-11 | 西安热工研究院有限公司 | A kind of diesel-driven generator back-up system based on power plant energy storage auxiliary frequency modulation |
| CN113193563A (en) * | 2021-02-04 | 2021-07-30 | 西安热工研究院有限公司 | System and method for preventing power loss of security power supply of power plant caused by overload of diesel generator |
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