CN110544980A - full-automatic uninterrupted power supply dual-power supply system - Google Patents
full-automatic uninterrupted power supply dual-power supply system Download PDFInfo
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- CN110544980A CN110544980A CN201910974838.3A CN201910974838A CN110544980A CN 110544980 A CN110544980 A CN 110544980A CN 201910974838 A CN201910974838 A CN 201910974838A CN 110544980 A CN110544980 A CN 110544980A
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- power supply
- time relay
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- generator
- supply system
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- 230000009977 dual effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
the invention relates to a full-automatic uninterrupted power supply dual-power supply system in the field of power supply systems. The technical scheme is as follows: an alternating current contactor KM1 and a coil loop are additionally arranged in a common commercial power supply system; an alternating current contactor KM2 and a coil loop are additionally arranged in a standby generator power supply system, and a dynamic break contact KM1-2 and a dynamic make contact KT5 are connected in series on the coil loop of the alternating current contactor KM 2; a UPS power supply is additionally arranged on a circuit which is connected with a load after a common commercial power supply system and a standby generator power supply system are connected with a dual-power automatic transfer switch. Has the advantages that: the system is provided with an alternating current contactor in each of the two loops, the alternating current contactor in the common power supply loop locks the alternating current contactor in the standby power supply loop, the dual-power switch is disconnected before being switched on when selecting a power supply, and two disconnection points are arranged in the non-working loop in any state, so that the commercial power is reliably isolated from the generator, the electric energy generated by the generator is prevented from entering a commercial power grid, and the power utilization safety is ensured.
Description
Technical Field
The invention relates to a full-automatic uninterrupted power supply dual-power supply system in the field of power supply systems.
Background
When the commercial power and the common power supply have power failure due to faults, the generator supplies power to the load, and the power supply is not available in the power generation process of the generator, so that places needing power supply, such as hospitals, machine rooms, monitoring rooms and the like, cannot normally operate.
Disclosure of Invention
Aiming at the defects in the prior art, the applicant develops a full-automatic uninterrupted power supply dual-power supply system based on a generator as a standby power supply.
The technical scheme is as follows: including commercial power supply system and reserve generator power supply system commonly used, characterized by: an alternating current contactor KM1 and a coil loop are additionally arranged in a common commercial power supply system; an alternating current contactor KM2 and a coil loop are additionally arranged in a standby generator power supply system, and a dynamic break contact KM1-2 and a dynamic make contact KT5 are connected in series on the coil loop of the alternating current contactor KM 2; a UPS power supply is additionally arranged on a circuit which is connected with a load after a common commercial power supply system and a standby generator power supply system are connected with a dual-power automatic transfer switch.
A control power supply circuit in the standby generator power supply system is characterized in that a movable contact KM1-1 of an alternating current contactor KM1 is connected with a time relay KT1 in series, a movable contact of the time relay KT1 is connected with a time relay KT2 in series and then connected with two ends of a time relay KT1 in parallel, a movable contact of the time relay KT2 is connected with a time relay KJ1 in series and then connected with two ends of a time relay KT2 in parallel, a movable contact of the time relay KT2 is connected with a time relay KT3 in series and then connected with two ends of a time relay KT2 in parallel, a movable contact of the time relay KT3 is connected with a time relay KJ2 in series and then connected with two ends of a time relay KT3 in parallel, a movable contact of the time relay KT3 is connected with two ends of a time relay KT3 in series and a movable contact of the time relay KT4 is connected with two ends of a time relay KT 6862 in series and then connected with two ends of a.
The generator shutdown control circuit in the standby generator power supply system is a closed contact series time relay KT6 of an alternating current contactor KM1, a closed contact series time relay KJ4 of the time relay KT6 is connected with the two ends of the time relay KT6 in parallel, and a closed contact series time relay KT7 of the time relay KT6 is connected with the two ends of the time relay KT6 in parallel.
A generator control panel circuit in the standby generator power supply system is characterized in that an open contact of a time relay KT7 is connected in series in a loop, a stop and reset button in the generator control panel is connected with a close contact of a time relay KJ1 and a close contact of a time relay KJ4 in parallel, a manual button is connected with a close contact of a time relay KJ2 in parallel, and a start button is connected with a close contact of a time relay KJ3 in parallel.
has the advantages that: in the aspect of safety, the system is provided with an alternating current contactor in each of the two loops, the alternating current contactor in the common power supply loop is locked off the alternating current contactor in the standby power supply loop, the dual-power switch is firstly disconnected and then switched on when selecting a power supply, and two disconnection points are arranged in the non-working loop in any state, so that the mains supply and the generator are reliably isolated, the electric energy generated by the generator is prevented from entering a mains supply power grid, and the power utilization safety is ensured.
Description of the drawings:
FIG. 1 is a schematic circuit diagram of a fully automatic uninterruptible power supply dual power supply system;
FIG. 2 is a schematic diagram of a generator start-up control circuit;
FIG. 3 is a schematic diagram of a generator shutdown control circuit;
Fig. 4 is a circuit schematic of the generator control panel.
The specific implementation mode is as follows:
referring to the attached drawings 1-4, the system comprises a common commercial power supply system and a standby generator power supply system, and is characterized in that: an alternating current contactor KM1 and a coil loop are additionally arranged in a common commercial power supply system; an alternating current contactor KM2 and a coil loop are additionally arranged in a standby generator power supply system, and a dynamic break contact KM1-2 and a dynamic make contact KT5 are connected in series on the coil loop of the alternating current contactor KM 2; a UPS power supply is additionally arranged on a circuit which is connected with a load after a common commercial power supply system and a standby generator power supply system are connected with a dual-power automatic transfer switch; a control power supply circuit in the standby generator power supply system is characterized in that a movable contact KM1-1 of an alternating current contactor KM1 is connected with a time relay KT1 in series, a movable contact of the time relay KT1 is connected with a time relay KT2 in series and then connected with two ends of a time relay KT1 in parallel, a movable contact of the time relay KT2 is connected with a time relay KJ1 in series and then connected with two ends of a time relay KT2 in parallel, a movable contact of the time relay KT2 is connected with a time relay KT3 in series and then connected with two ends of a time relay KT2 in parallel, a movable contact of the time relay KT3 is connected with a time relay KJ2 in series and then connected with two ends of a time relay KT3 in parallel, a movable contact of the time relay KT3 is connected with two ends of a time relay KT4 in series and then connected with two ends of a time relay KT 6862 in parallel, and a movable contact of an 4 is connected with two ends of; a generator stop control circuit in the standby generator power supply system is formed by connecting a movable contact of an alternating current contactor KM1 in series with a time relay KT6, connecting a movable contact of a time relay KT6 in series with the time relay KJ4 and then in parallel at two ends of the time relay KT6, and connecting a movable contact of a time relay KT6 in series with the time relay KT7 and then in parallel at two ends of the time relay KT 6; a generator control panel circuit in the standby generator power supply system is characterized in that an open contact of a time relay KT7 is connected in series in a loop, a stop and reset button in the generator control panel is connected with a close contact of a time relay KJ1 and a close contact of a time relay KJ4 in parallel, a manual button is connected with a close contact of a time relay KJ2 in parallel, and a start button is connected with a close contact of a time relay KJ3 in parallel.
the control principle is as follows:
The system adopts a four-cylinder gasoline generator as a power generation device, when the mains supply is interrupted due to faults or other reasons, a UPS power supply is started instantly to provide uninterrupted power to supply power to a load, an alternating current contactor KM1 in a common power supply loop is reset after power failure, a break contact KM1-1 and a break contact KM1-2 of the system are closed simultaneously to respectively switch on a break point 1 in an alternating current contactor coil loop in a starting control circuit power supply and a standby power supply loop, a break contact KM1 of the system is switched off to cut off the power supply of a generator shutdown control circuit, a time relay KT7 is reset, a break contact KT7 of the system is switched on to switch on the power supply of the; at the same time, a time relay KT1 of a starting control circuit enters work to start and delay, after 10 seconds (self-checking time of the generator), a make contact KT1 is closed to switch on a time relay KT2 of the control circuit and a power supply of a relay KJ1 of a make contact KT2 connected in series with the time relay KT2, the relay KJ1 is closed by the make contact KJ1, the make contact KJ1 of the relay KJ1 is connected in parallel with a 'stop/reset' key of the generator and is equivalent to pressing the 'stop/reset' key of the generator, the make contact KT2 of the time relay KT2 after 2 seconds is operated to switch off the power supply of the relay KJ1, the make contact KJ1 of the relay KJ1 is reset in a loss of electricity and is equivalent to lifting the 'stop/reset' key of the generator, and the time relay KT2 of the time relay KT2 is closed to switch on the time relay KT3 of the time relay KT and the power supply of the control circuit and the relay 2 connected in series with the time relay 3, by analogy, after a time relay KT4 of the control circuit and a relay KJ3 connected in series with a dynamic break contact KT4 of the time relay KT4 execute the action of pressing a starting key of the generator, a dynamic break contact KT4 of the time relay KT4 of the control circuit is closed to switch on a power supply of a time relay KT5 of the control circuit, the time relay KT5 starts to work and enters time delay, a dynamic break contact KT5 (a break point 2 in an alternating current contactor coil loop in a standby power supply loop) of the time relay KT5 is closed to switch on an alternating current contactor KM2 coil in the standby power supply loop after the set moment that the generator is adjusted to a stable state is reached, an alternating current contactor KM2 in the standby power supply loop acts, the electric energy of the generator is transmitted to a standby power supply end of a dual-power automatic change-over switch, the dual-power automatic change-over switch acts to switch on, the load is powered by the generator. When the commercial power returns to normal power supply, the main contact of the alternating current contactor KM1 in the common power supply loop is attracted, the electric energy is transmitted to the common power supply end of the dual-power automatic transfer switch, the dual-power automatic transfer switch acts to firstly disconnect the standby power supply (generator) to form a second disconnection point in the standby power supply loop and then switch on the commercial power and the load; meanwhile, the auxiliary contact of the alternating current contactor KM1 in the common power supply loop also acts, the break contact KM1-2 breaks off a break point 1 in a coil loop of the alternating current contactor KM2 in the standby power supply loop, a coil of the alternating current contactor KM2 in the standby power supply loop loses power, and a main contact of the alternating current contactor KM2 is broken, so that a first break point is formed in the standby power supply loop; the break contact KM1-1 disconnects the power supply of the control circuit, so that the control circuit is restored to a standby state; the power supply of a time relay KT6 of a switching-on control circuit is closed by a movable contact KM1 and a relay KJ4 of a switching-off contact of a time relay KT6 in series, the relay KJ4 is closed by an electric movable contact, the movable contact of a relay KJ4 is connected with a power generator 'stop/reset' key in parallel, the power generator 'stop/reset' key is pressed equivalently, the power generator obtains a stop instruction, the power supply of the relay KJ4 is switched off by the action of the movable contact of the time relay KT6 after 2 seconds, the movable contact KJ4 of the relay KJ4 is reset after power failure, the power generator 'stop/reset' key is lifted equivalently, the movable contact KT6 of the time relay KT6 is closed to switch on the power supply of the time relay KT7 of the control circuit, the time relay KT7 begins to delay, the movable contact of the time relay KT7 switches off the power supply of the power generator after the stop heat dissipation process (10 seconds) of the power generator is, in the process from the normal power supply recovery of the commercial power to the conversion of the dual-power automatic transfer switch into the commercial power supply, the UPS is started instantly to provide uninterrupted electric energy to supply power to the load, so that the uninterrupted operation of the load is ensured.
When the mains supply is interrupted due to faults or other reasons, the UPS is started instantly to supply power to the load, and meanwhile, the control circuit of the system sends a starting instruction to the generator. The method comprises the steps that a generator firstly carries out self-checking after obtaining a starting instruction, a fuel engine is normally started through the self-checking to drive a three-phase alternating-current generator to generate electricity, the generator adjusts the rotating speed of the engine according to the required frequency (50 Hz) after the electricity is generated, when the rotating speed is stably adjusted (3000 rpm), the generator outputs 380v and 50Hz three-phase alternating current, the input end of a standby power supply of a dual-power automatic transfer switch is electrified to be connected with a standby power supply loop, a UPS (uninterrupted power supply) stops working after detecting an external power supply, the generator supplies power to a load, and therefore the uninterrupted operation of the load is guaranteed; because the system adopts the PC-level isolation type dual-power automatic transfer switch as the power selection switch, the system has the priority function of the common power supply, the common power supply can be automatically transferred to supply power for the load, and the transfer process is also relayed by the UPS power supply to supply power; in the aspect of safety, the system is provided with an alternating current contactor in each of the two loops and is interlocked, the double-power switch is disconnected before being switched on when a power supply is selected, and the two disconnection points exist in the non-working loop in any state, so that the commercial power and the generator are reliably isolated, the electric energy generated by the generator is prevented from entering a commercial power grid, and the power utilization safety is ensured.
Claims (4)
1. Full-automatic uninterrupted power supply dual power supply device, including commercial power supply system and stand-by generator power supply system commonly used, characterized by: an alternating current contactor KM1 and a coil loop are additionally arranged in a common commercial power supply system; an alternating current contactor KM2 and a coil loop are additionally arranged in a standby generator power supply system, and a dynamic break contact KM1-2 and a dynamic make contact KT5 are connected in series on the coil loop of the alternating current contactor KM 2; a UPS power supply is additionally arranged on a circuit which is connected with a load after a common commercial power supply system and a standby generator power supply system are connected with a dual-power automatic transfer switch.
2. The full-automatic uninterruptible power supply dual-power supply device according to claim 1, characterized in that: a control power supply circuit in the standby generator power supply system is characterized in that a movable contact KM1-1 of an alternating current contactor KM1 is connected with a time relay KT1 in series, a movable contact of the time relay KT1 is connected with a time relay KT2 in series and then connected with two ends of a time relay KT1 in parallel, a movable contact of the time relay KT2 is connected with a time relay KJ1 in series and then connected with two ends of a time relay KT2 in parallel, a movable contact of the time relay KT2 is connected with a time relay KT3 in series and then connected with two ends of a time relay KT2 in parallel, a movable contact of the time relay KT3 is connected with a time relay KJ2 in series and then connected with two ends of a time relay KT3 in parallel, a movable contact of the time relay KT3 is connected with two ends of a time relay KT3 in series and a movable contact of the time relay KT4 is connected with two ends of a time relay KT 6862 in series and then connected with two ends of a.
3. the full-automatic uninterruptible power supply dual-power supply device according to claim 1, characterized in that: the generator shutdown control circuit in the standby generator power supply system is a closed contact series time relay KT6 of an alternating current contactor KM1, a closed contact series time relay KJ4 of the time relay KT6 is connected with the two ends of the time relay KT6 in parallel, and a closed contact series time relay KT7 of the time relay KT6 is connected with the two ends of the time relay KT6 in parallel.
4. The full-automatic uninterruptible power supply dual-power supply device according to claim 1, characterized in that: a generator control panel circuit in the standby generator power supply system is characterized in that an open contact of a time relay KT7 is connected in series in a loop, a stop and reset button in the generator control panel is connected with a close contact of a time relay KJ1 and a close contact of a time relay KJ4 in parallel, a manual button is connected with a close contact of a time relay KJ2 in parallel, and a start button is connected with a close contact of a time relay KJ3 in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974838.3A CN110544980A (en) | 2019-10-14 | 2019-10-14 | full-automatic uninterrupted power supply dual-power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974838.3A CN110544980A (en) | 2019-10-14 | 2019-10-14 | full-automatic uninterrupted power supply dual-power supply system |
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| CN110544980A true CN110544980A (en) | 2019-12-06 |
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| CN201910974838.3A Pending CN110544980A (en) | 2019-10-14 | 2019-10-14 | full-automatic uninterrupted power supply dual-power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111773601A (en) * | 2020-05-29 | 2020-10-16 | 安博物联网科技(深圳)有限公司 | Fire extinguishing apparatus linkage controller host |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312028A (en) * | 2013-06-29 | 2013-09-18 | 襄垣县树元电器有限公司 | Delayed automatic switching starting circuit for dual power supplies |
| CN204633459U (en) * | 2015-04-15 | 2015-09-09 | 杨昌达 | A kind of intelligent power supply system realizing generator and civil power seamless switching |
| CN207652128U (en) * | 2017-10-20 | 2018-07-24 | 陕西北元化工集团股份有限公司 | A kind of dual power supply uninterruptible power system |
| CN210536349U (en) * | 2019-10-14 | 2020-05-15 | 黄向梅 | Full-automatic uninterrupted power supply dual-power supply system |
-
2019
- 2019-10-14 CN CN201910974838.3A patent/CN110544980A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312028A (en) * | 2013-06-29 | 2013-09-18 | 襄垣县树元电器有限公司 | Delayed automatic switching starting circuit for dual power supplies |
| CN204633459U (en) * | 2015-04-15 | 2015-09-09 | 杨昌达 | A kind of intelligent power supply system realizing generator and civil power seamless switching |
| CN207652128U (en) * | 2017-10-20 | 2018-07-24 | 陕西北元化工集团股份有限公司 | A kind of dual power supply uninterruptible power system |
| CN210536349U (en) * | 2019-10-14 | 2020-05-15 | 黄向梅 | Full-automatic uninterrupted power supply dual-power supply system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111773601A (en) * | 2020-05-29 | 2020-10-16 | 安博物联网科技(深圳)有限公司 | Fire extinguishing apparatus linkage controller host |
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