CN219477661U - Uninterrupted power supply system based on intelligent start-stop of generator - Google Patents
Uninterrupted power supply system based on intelligent start-stop of generator Download PDFInfo
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- CN219477661U CN219477661U CN202320260264.5U CN202320260264U CN219477661U CN 219477661 U CN219477661 U CN 219477661U CN 202320260264 U CN202320260264 U CN 202320260264U CN 219477661 U CN219477661 U CN 219477661U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses an uninterruptible power supply system based on intelligent start and stop of a generator, which comprises a mains supply unit; the commercial power unit is connected with an alternating current contactor KM, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the commercial power and then transmits the commercial power to the UPS; the UPS power supply supplies power for airport electric equipment; the commercial power sampling module is connected with the singlechip; the singlechip realizes on-off control of the two indicator lamps and the plurality of relays by controlling the switching triodes Q1 and Q2. The alternating current contactor KM is respectively connected with the mains supply and the generator, and is connected with the mains supply when the mains supply is connected; when the commercial power is interrupted, the alternating current contactor KM is connected with the generator, the navigation equipment is automatically switched to the inversion power supply of the UPS power supply storage battery pack, the generator enters a time-delay starting countdown state according to the duration preset time of the UPS power supply, the starting and stopping of the generator are automatically controlled by the singlechip, and the uninterrupted power supply of the whole power supply system is ensured.
Description
Technical Field
The utility model relates to the technical field of alternating current and direct current power supply devices, in particular to an uninterrupted power supply system based on intelligent start and stop of a generator.
Background
Airport stationary navigation stations require very stable uninterruptible power supply systems. In the prior art, the power supply guarantee mainly uses commercial power, and a UPS power supply and a generator are used as standby power supplies. When the commercial power is interrupted, because the duration of the UPS is shorter, a worker is required to manually start the generator, and the generator is switched to supply power; when the commercial power is recovered, the power generator is required to be manually turned off by a worker, and the commercial power is switched back to supply power.
Because the generator is started to normal power output and needs a certain time, the commercial power interruption can cause the equipment to be suddenly powered off, the equipment is extremely damaged, and even the flight safety is threatened. Therefore, the actual situation of the power supply equipment of the fixed navigation platform of the airport is combined, and on the premise of not changing the existing power supply system, the generator is automatically started or stopped when the commercial power is interrupted and recovered, so that uninterrupted continuous power supply of the navigation equipment is ensured.
Meanwhile, although the UPS in the prior art can supply power briefly, the starting and stopping of the generator and the switching between the mains supply and the main and standby power supplies of the generator are mostly completed manually. In addition, the generator generally needs to be preheated before being started, so that the normal operation of the generator can be ensured.
When the commercial power is interrupted in the existing power supply mode, the navigation equipment can be automatically switched into the storage battery inversion power supply of the UPS power supply: and if the mains supply is recovered in time, automatically recovering the mains supply. If the commercial power cannot be recovered in time and the endurance time of the UPS power supply storage battery pack cannot meet the power supply requirement, the commercial power needs to be manually disconnected, the power generator is started for power supply, and after the commercial power is recovered, the power generator is manually turned off, and the commercial power is turned on for power supply. This way of operation is cumbersome and necessarily has a certain period of vacuum during which the power supply system is actually in a powered-off state.
Disclosure of Invention
The utility model aims to provide an uninterruptible power supply system based on intelligent start-stop of a generator.
To achieve the above object, in one embodiment of the present utility model, there is provided an uninterruptible power supply system based on intelligent start-stop of a generator, including:
a utility unit; the commercial power unit is connected with an alternating current contactor KM, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the commercial power and then transmits the commercial power to the UPS;
the first output end of the UPS power supply supplies power to airport electric equipment, and the second output end of the UPS power supply forms second low-voltage direct current through a second buck conversion module;
the output end A of the second buck conversion module is sequentially connected with the preheating indicator lamp L1 and the collector electrode of the switching triode Q1, and the collector electrode of the switching triode Q1 is also connected with the relay J1; the relay J1 is used for controlling the on-off state of a preheating storage battery of the generator, and the generator starts to be preheated when the relay J1 is sucked;
the output end B of the second buck conversion module is connected with the starting indicator lamp L2 and the collector electrode of the switching triode Q2, and the collector electrode of the switching triode Q2 is connected with the relay J2; the relay J2 is used for controlling the starting state of the generator, and the generator is started when the relay J2 is sucked; the output end of the generator is connected with an alternating current contactor KM;
the output end C of the second buck conversion module is processed by the singlechip power supply module to form low voltage for supplying power to the singlechip;
a mains supply sampling module; the system is used for processing the commercial power of the commercial power unit to form a sampling signal, and the sampling signal is connected with the singlechip;
the output signal foot of singlechip is connected with the base of switch triode Q1 and switch triode Q2 respectively, and the singlechip realizes controlling preheating pilot lamp L1 and relay J1's break-make state through the state of control switch triode Q1, and the singlechip realizes controlling the break-make state of start-up pilot lamp L2 and relay J2 through the state of control switch triode Q2.
In an optimized embodiment of the utility model, the airport electric equipment comprises a navigator and a beacon.
In an optimized embodiment of the utility model, the second buck conversion module comprises a transformer, a rectifier and a filter, and the second buck conversion module performs buck rectification and filtration on voltage and current output by the UPS to form a second low-voltage direct current, and the second low-voltage direct current is DC12V.
In the optimized embodiment of the utility model, the charging end of the preheating storage battery is provided with the preheating storage battery charger and the preheating time control switch, the UPS power supply charges the preheating storage battery through the preheating storage battery charger, and the preheating time control switch controls the charging time of the UPS power supply; the charging time is not less than 2h per month.
In an optimized embodiment of the utility model, the singlechip power supply module comprises a voltage reducer, a voltage stabilizer and a filter, and the second low-voltage direct current is subjected to voltage reduction, voltage stabilization and filtering to form DC5V and then is transmitted to the singlechip to supply power for the singlechip.
In the optimized embodiment of the utility model, the commercial power sampling module comprises a resistance-capacitance voltage reducer, a rectifier, a voltage stabilizer, a filter and a photoelectric isolator, and commercial power forms sampling signals through resistance-capacitance voltage reduction, rectification, voltage stabilization, filtering and photoelectric isolation; the sampling signal is low when the mains supply is on, and high when the mains supply is off.
In an optimized embodiment of the utility model, the UPS power supply comprises an input filter, a rectifier, an inverter, a charger, a built-in storage battery, a static switch and an output filter; the input filter is connected with the commercial power module, and the output filter is connected with an output terminal of the UPS.
The utility model also discloses a power supply method of the uninterrupted power supply system based on the intelligent start and stop of the generator, wherein the uninterrupted power supply system comprises the following components:
a utility unit; the commercial power unit is connected with an alternating current contactor KM, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the commercial power and then transmits the commercial power to the UPS;
the first output end of the UPS power supply supplies power to airport electric equipment, and the second output end of the UPS power supply forms second low-voltage direct current through a second buck conversion module;
the output end A of the second buck conversion module is sequentially connected with the preheating indicator lamp L1 and the collector electrode of the switching triode Q1, and the collector electrode of the switching triode Q1 is also connected with the relay J1; the relay J1 is used for controlling the on-off state of a preheating storage battery of the generator, and the generator starts to be preheated when the relay J1 is sucked;
the output end B of the second buck conversion module is connected with the starting indicator lamp L2 and the collector electrode of the switching triode Q2, and the collector electrode of the switching triode Q2 is connected with the relay J2; the relay J2 is used for controlling the starting state of the generator, and the generator is started when the relay J2 is sucked; the output end of the generator is connected with an alternating current contactor KM;
the output end C of the second buck conversion module is processed by the singlechip power supply module to form low voltage for supplying power to the singlechip;
a mains supply sampling module; the system is used for processing the commercial power of the commercial power unit to form a sampling signal, and the sampling signal is connected with the singlechip;
the output signal pin of the singlechip is respectively connected with the bases of the switching triode Q1 and the switching triode Q2, the singlechip controls the on-off state of the preheating indicator lamp L1 and the relay J1 by controlling the state of the switching triode Q1, and the singlechip controls the on-off state of the starting indicator lamp L2 and the relay J2 by controlling the state of the switching triode Q2;
the power supply method of the uninterruptible power supply system comprises the following steps:
the utility power unit is connected with the alternating current contactor KM and detects the state of the utility power unit;
(1) When detecting that the mains supply unit is in a power-on state:
the utility power unit is connected with a normally open contact of the alternating current contactor KM, the alternating current contactor KM is attracted when the utility power is normal, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the utility power and then transmits the stabilized power to the UPS; one path of the UPS power supply supplies power to airport electric equipment, and one path of the UPS power supply supplies power to the singlechip after being subjected to voltage reduction; the commercial power sampling module sends the detection signal to the singlechip, and the singlechip receives a low-level signal at the moment;
(2) When detecting the interrupt state of the commercial power unit processing:
the commercial power unit is disconnected from the alternating current contactor KM after the commercial power unit is disconnected, a built-in storage battery of the UPS provides power, and at the moment, after the commercial power sampling module detects that the commercial power unit is disconnected, the single chip microcomputer receives a high-level signal;
after the singlechip judges that the received signal is a high-level signal, the singlechip records the receiving time of the high-level signal, and when the receiving time exceeds a threshold value, the singlechip sends a signal to the switching triode Q1, so that the switching triode Q1 is conducted, after the switching triode Q1 is conducted, the preheating indicator lamp L1 is lightened, and meanwhile, the relay J1 is turned on;
after the relay J1 is connected, a preheating storage battery power supply circuit of the generator is connected, the generator starts preheating, after the preheating is finished, the singlechip controls the switch triode Q2, the starting indicator lamp L2 and the relay J2 to be conducted, and after the relay J2 is conducted, the generator is automatically started to generate power; after the generator is started, the singlechip controls the switching triode Q2 to be cut off, and the starting indicator lamp L2 and the relay J2 are interrupted;
after the generator generates electricity, the generator is communicated with the alternating current contactor KM, and the generator provides an external input power supply for the UPS;
(3) When mains recovery is detected:
the singlechip judges that the received signal is a low-level signal, the mains supply unit supplies power and is communicated with an alternating current contactor KM, and the alternating current contactor KM is disconnected with the generator; the singlechip controls the switching triode Q1 to be cut off, the relay J1 is disconnected, the generator automatically stops working to generate electricity, and the preheating indicator lamp L1 is extinguished.
In the optimized embodiment of the utility model, the charging end of the preheating storage battery is provided with the preheating storage battery charger and the preheating time control switch, the UPS power supply charges the preheating storage battery through the preheating storage battery charger, and the preheating time control switch controls the charging time of the UPS power supply; the charging time is not less than 2h per month.
In the optimized embodiment of the utility model, the relay J2 is connected with the relay J3, the relay J2 controls the on-off state of the relay J3, and the relay J3 controls the starting state of the generator; the relay J2 is a relay of DC12V-30A, and the relay J3 is a relay of DC 12V-60A.
In summary, the utility model has the following advantages:
1. according to the utility model, the alternating current contactor KM is respectively connected with the mains supply and the generator, when the mains supply is connected, the alternating current contactor KM is connected with the mains supply, when the mains supply is interrupted, the alternating current contactor KM is connected with the generator, and after the countdown is finished, the generator supplies power, so that uninterrupted power supply guarantee can be realized.
2. The UPS power supply provided by the utility model is provided with the built-in storage battery, when the commercial power is interrupted, the singlechip acquires the commercial power state through the commercial power sampling module and receives the high-level signal, the singlechip starts timing after receiving the high-level signal, and starts preheating the generator after the UPS power supply works for a preset time, and starts the generator to generate electricity after the preheating is finished. The singlechip controls the combination of two triodes and a relay in a linkage way to realize the preheating and starting work; according to the utility model, the working states of the indicator lamp and the relay are realized through the detection of the high and low levels of the commercial power by the singlechip and the switching triode, so that the control of the singlechip on the generator is realized, the generator can be intelligently connected into the alternating current contactor KM, and the input power is further provided for the UPS.
3. The utility model forms high and low levels through the detection of the state of the commercial power, and further uses the singlechip to realize automatic intelligent control of the generator, thereby ensuring uninterrupted power supply of the whole power supply system.
When the commercial power is interrupted, the power supply is automatically switched to the built-in storage battery of the UPS for inversion power supply, meanwhile, the singlechip enters a time-delay starting countdown state of the generator according to the continuous preset time of the UPS, if the commercial power is recovered in time, the countdown of the singlechip is immediately stopped, and the system automatically recovers the power supply of the commercial power. If the mains supply is not recovered after the countdown is finished, the singlechip controls the generator to automatically start to supply power, and the generator outputs the power to the alternating-current stabilized voltage supply through the normally closed contact of the alternating-current contactor KM; when the mains supply is recovered, the single chip microcomputer automatically shuts down the generator, and the normally open contact of the alternating current contactor KM is attracted to recover the mains supply, so that uninterrupted power supply of the whole system is ensured.
Drawings
FIG. 1 is a schematic diagram of the connection between a mains unit and a UPS power source in one embodiment of the utility model;
FIG. 2 is a schematic diagram illustrating the output connection of a second buck converter module according to an embodiment of the present utility model;
fig. 3 is a circuit diagram of the power supply system according to the present utility model in one embodiment of the present utility model.
Detailed Description
The utility model provides an uninterruptible power supply system based on intelligent start-stop of a generator, which comprises:
a utility unit; the utility power unit is connected with an alternating current contactor KM, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the utility power and then transmits the stabilized power to the UPS. The mains supply unit is directly connected with 220V mains supply and can output 220V alternating current mains supply. The alternating current contactor KM can be selected from normally open and normally closed alternating current contactors KM with the model of LC1D258M7C, and the coil voltage AC220V, ith is as follows: 40A, ui:690V, uimp:6KV. The UPS power supply can store and output electric energy, the output voltage of the UPS power supply is AC220V and 50Hz, and the specification of a built-in storage battery of the UPS power supply is 12V/24Ah 16.
The UPS power supply is provided with a plurality of output ends and can provide electric energy for a plurality of electric equipment. The first output end of the UPS power supply supplies power to airport electric equipment, and the airport electric equipment comprises a navigation machine and a beacon machine. The second output end forms a second low-voltage direct current through a second buck conversion module. The second buck conversion module comprises a transformer, a rectifier and a filter, and the second buck conversion module is used for rectifying and filtering the voltage and the current output by the UPS power supply to form second low-voltage direct current, and the second low-voltage direct current is DC12V. The second low-voltage direct current can provide electric signals for connection of the switch triode and the indicator lamp, and can also provide electric energy for the singlechip after voltage reduction.
The output end A of the second buck conversion module is sequentially connected with the preheating indicator lamp L1 and the collector electrode of the switching triode Q1, and the collector electrode of the switching triode Q1 is further connected with the relay J1. The relay J1 is used for controlling the on-off state of the preheating storage battery of the generator, and the generator starts to be preheated when the relay J1 is sucked.
The output end B of the second buck conversion module is connected with the starting indicator lamp L2 and the collector electrode of the switching triode Q2, and the collector electrode of the switching triode Q2 is connected with the relay J2. The relay J2 is used for controlling the starting state of the generator, and the generator is started when the relay J2 is sucked; the output end of the generator is connected with an alternating current contactor KM. The collector of the switching triode is connected with the DC12V, and when the base of the switching triode is controlled by the singlechip to input an electric signal, the switching triode can be conducted, so that the indicator lamp and the relay are connected.
The output end C of the second buck conversion module is processed by the singlechip power supply module to form low voltage for supplying power to the singlechip; specifically, the singlechip power supply module comprises a voltage reducer, a voltage stabilizer and a filter, and the second low-voltage direct current is subjected to voltage reduction, voltage stabilization and filtering to form DC5V and then is transmitted to the singlechip to supply power for the singlechip.
The mains supply sampling module is used for processing the mains supply of the mains supply unit to form a sampling signal, and the sampling signal is connected with the singlechip. The utility power sampling module is in order to enable the singlechip to detect the on-off state of the utility power, for example, after the utility power is cut off or the utility power is recovered, the singlechip can detect the corresponding state through the utility power sampling module, the singlechip can form high and low level, and then the preheating starting state of the generator can be controlled according to the state of the utility power. The commercial power sampling module comprises a resistance-capacitance voltage reducer, a rectifier, a voltage stabilizer, a filter and a photoelectric isolator, and the commercial power is subjected to resistance-capacitance voltage reduction, rectification, voltage stabilization, filtering and photoelectric isolation to form a sampling signal; the sampling signal is low when the mains supply is on, and high when the mains supply is off.
The output signal foot of singlechip is connected with the base of switch triode Q1 and switch triode Q2 respectively, and the singlechip realizes controlling preheating pilot lamp L1 and relay J1's break-make state through the state of control switch triode Q1, and the singlechip realizes controlling the break-make state of start-up pilot lamp L2 and relay J2 through the state of control switch triode Q2.
In the utility model, in order to ensure that the preheating storage battery can be normally used, the condition of lack of electric energy during the next use is avoided, and the preheating storage battery needs to be charged at intervals; however, since the warm-up time is limited, the number of times of starting the generator is small, so that the charging time for warming up the storage battery can be small, for example, the charging time per month is more than 2 hours. The charging end of the preheating storage battery is provided with a preheating storage battery charger and a preheating time control switch, the UPS power supply charges the preheating storage battery through the preheating storage battery charger, the preheating time control switch controls the charging time of the UPS power supply, the preheating time control switch can record the time and the duration of each charging, the UPS power supply is automatically communicated to charge when the preset period is reached, the charging duration of each charging time is more than 2 hours, and if the charging duration is less than 2 hours due to other reasons, such as insufficient UPS power supply, the charging is continued for the next time.
The UPS power supply can select any one of the prior art to realize the UPS power supply required by the utility model; for example, the UPS power supply of the present utility model may include an input filter, a rectifier, an inverter, a charger, a built-in battery, a static switch, and an output filter; the input filter is connected with the commercial power module, and the output filter is connected with an output terminal of the UPS. When the commercial power is normal, after the commercial power unit AC220V alternating current is filtered, one path of the commercial power is output after rectification, static switching and secondary filtering, and the other path of the commercial power is sent to a charging module to charge the UPS power accumulator battery in a floating mode; and when the commercial power is interrupted, outputting the power after the UPS power supply and the storage battery inverter, the static switch and the secondary filtering.
The utility model also discloses a power supply method of the uninterrupted power supply system based on the intelligent start and stop of the generator, and the uninterrupted power supply system comprises the following steps:
a utility unit; the commercial power unit is connected with an alternating current contactor KM, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the commercial power and then transmits the commercial power to the UPS;
the first output end of the UPS power supply supplies power to airport electric equipment, and the second output end of the UPS power supply forms second low-voltage direct current through a second buck conversion module;
the output end A of the second buck conversion module is sequentially connected with the preheating indicator lamp L1 and the collector electrode of the switching triode Q1, and the collector electrode of the switching triode Q1 is also connected with the relay J1; the relay J1 is used for controlling the on-off state of a preheating storage battery of the generator, and the generator starts to be preheated when the relay J1 is sucked;
the output end B of the second buck conversion module is connected with the starting indicator lamp L2 and the collector electrode of the switching triode Q2, and the collector electrode of the switching triode Q2 is connected with the relay J2; the relay J2 is used for controlling the starting state of the generator, and the generator is started when the relay J2 is sucked; the output end of the generator is connected with an alternating current contactor KM; the output end C of the second buck conversion module is processed by the singlechip power supply module to form low voltage for supplying power to the singlechip;
a mains supply sampling module; the system is used for processing the commercial power of the commercial power unit to form a sampling signal, and the sampling signal is connected with the singlechip;
the output signal foot of singlechip is connected with the base of switch triode Q1 and switch triode Q2 respectively, and the singlechip realizes controlling preheating pilot lamp L1 and relay J1's break-make state through the state of control switch triode Q1, and the singlechip realizes controlling the break-make state of start-up pilot lamp L2 and relay J2 through the state of control switch triode Q2.
The power supply method of the uninterrupted power supply system comprises the following steps:
the utility power unit is connected with the alternating current contactor KM and detects the state of the utility power unit;
(1) When detecting that the mains supply unit is in a power-on state:
the utility power unit is connected with a normally open contact of the alternating current contactor KM, the alternating current contactor KM is attracted when the utility power is normal, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the utility power and then transmits the stabilized power to the UPS; one path of the UPS power supply supplies power to airport electric equipment, and one path of the UPS power supply supplies power to the singlechip after being subjected to voltage reduction; the commercial power sampling module sends the detection signal to the singlechip, and the singlechip receives a low-level signal at the moment;
(2) When detecting the interrupt state of the commercial power unit processing:
the commercial power unit is disconnected from the alternating current contactor KM after the commercial power unit is disconnected, a built-in storage battery of the UPS provides power, and at the moment, after the commercial power sampling module detects that the commercial power unit is disconnected, the single chip microcomputer receives a high-level signal;
after the singlechip judges that the received signal is a high-level signal, the singlechip records the receiving time of the high-level signal, and when the receiving time exceeds a threshold value, the singlechip sends a signal to the switching triode Q1, so that the switching triode Q1 is conducted, after the switching triode Q1 is conducted, the preheating indicator lamp L1 is lightened, and meanwhile, the relay J1 is turned on;
after the relay J1 is connected, a preheating storage battery power supply circuit of the generator is connected, the generator starts preheating, after the preheating is finished, the singlechip controls the switch triode Q2, the starting indicator lamp L2 and the relay J2 to be conducted, and after the relay J2 is conducted, the generator is automatically started to generate power; after the generator is started, the singlechip controls the switching triode Q2 to be cut off, and the starting indicator lamp L2 and the relay J2 are interrupted;
after the generator generates electricity, the generator is communicated with the alternating current contactor KM, and the generator provides an external input power supply for the UPS;
(3) When mains recovery is detected:
the singlechip judges that the received signal is a low-level signal, the mains supply unit supplies power and is communicated with an alternating current contactor KM, and the alternating current contactor KM is disconnected with the generator; the singlechip controls the switching triode Q1 to be cut off, the relay J1 is disconnected, the generator automatically stops working to generate electricity, and the preheating indicator lamp L1 is extinguished.
The utility model can control the starting state of the generator through the relay J2, but the starting state of the generator is controlled by considering that the voltage and the current of the starting output of the generator are higher, so that the formation of the combination of the relay J2 and the relay J3 can be adopted to form the on-off control, the current of the relay J2 is smaller than that of the relay J3, the relay J2 is connected with the relay J3, the relay J2 controls the on-off state of the relay J3, and the relay J3 controls the starting state of the generator, namely the relay J3 is directly connected with the generator to control the output on-off state of the generator. The relay J2 is a relay of DC12V-30A, and the relay J3 is a relay of DC 12V-60A.
Although specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (7)
1. Uninterrupted power source system based on generator intelligence opens and stops, its characterized in that includes:
a utility unit; the commercial power unit is connected with an alternating current contactor KM, the output end of the alternating current contactor KM is connected with an alternating current stabilized voltage supply, and the alternating current stabilized voltage supply stabilizes the commercial power and then transmits the commercial power to the UPS;
the first output end of the UPS power supply supplies power to airport electric equipment, and the second output end of the UPS power supply forms second low-voltage direct current through a second buck conversion module;
the output end A of the second buck conversion module is sequentially connected with the preheating indicator lamp L1 and the collector electrode of the switching triode Q1, and the collector electrode of the switching triode Q1 is also connected with the relay J1; the relay J1 is used for controlling the on-off state of a preheating storage battery of the generator, and the generator starts to be preheated when the relay J1 is sucked;
the output end B of the second buck conversion module is connected with the starting indicator lamp L2 and the collector electrode of the switching triode Q2, and the collector electrode of the switching triode Q2 is connected with the relay J2; the relay J2 is used for controlling the starting state of the generator, and the generator is started when the relay J2 is sucked; the output end of the generator is connected with an alternating current contactor KM;
the output end C of the second buck conversion module is processed by the singlechip power supply module to form low voltage for supplying power to the singlechip;
a mains supply sampling module; the system is used for processing the commercial power of the commercial power unit to form a sampling signal, and the sampling signal is connected with the singlechip;
the output signal foot of singlechip is connected with the base of switch triode Q1 and switch triode Q2 respectively, and the singlechip realizes controlling preheating pilot lamp L1 and relay J1's break-make state through the state of control switch triode Q1, and the singlechip realizes controlling the break-make state of start-up pilot lamp L2 and relay J2 through the state of control switch triode Q2.
2. The uninterruptible power supply system of claim 1, wherein: the airport electric equipment comprises a navigation machine and a beacon machine.
3. The uninterruptible power supply system of claim 1, wherein: the second buck conversion module comprises a transformer, a rectifier and a filter, and the second buck conversion module is used for rectifying and filtering the voltage and the current output by the UPS to form second low-voltage direct current, and the second low-voltage direct current is DC12V.
4. The uninterruptible power supply system of claim 1, wherein: the charging end of the preheating storage battery is provided with a preheating storage battery charger and a preheating time control switch, the UPS power supply charges the preheating storage battery through the preheating storage battery charger, and the preheating time control switch controls the charging time of the UPS power supply; the charging time is not less than 2h per month.
5. The uninterruptible power supply system of claim 1, wherein: the singlechip power supply module comprises a step-down device, a voltage stabilizer and a filter, and is used for carrying out step-down voltage stabilization filtering on the second low-voltage direct current to form DC5V and then transmitting the DC5V to the singlechip to supply power for the singlechip.
6. The uninterruptible power supply system of claim 1, wherein: the commercial power sampling module comprises a resistance-capacitance voltage reducer, a rectifier, a voltage stabilizer, a filter and a photoelectric isolator, and commercial power is subjected to resistance-capacitance voltage reduction, rectification, voltage stabilization, filtering and photoelectric isolation to form a sampling signal; the sampling signal is low when the mains supply is on, and high when the mains supply is off.
7. The uninterruptible power supply system of claim 1, wherein: the UPS power supply comprises an input filter, a rectifier, an inverter, a charger, a built-in storage battery, a static switch and an output filter; the input filter is connected with the commercial power module, and the output filter is connected with an output terminal of the UPS.
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