CN218071017U - Modularized mobile micro-power supply system - Google Patents
Modularized mobile micro-power supply system Download PDFInfo
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- CN218071017U CN218071017U CN202221671388.4U CN202221671388U CN218071017U CN 218071017 U CN218071017 U CN 218071017U CN 202221671388 U CN202221671388 U CN 202221671388U CN 218071017 U CN218071017 U CN 218071017U
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Abstract
The utility model provides a mobile little electric power supply system of modularization, include: the system comprises an energy storage guarantee module, a direct current energy storage module and a load power supply module; the energy storage guarantee module comprises a photovoltaic unit, an alternating current charging unit and a high-frequency switching power supply module, and the high-frequency switching power supply module is used for converting alternating current into direct current; the direct current energy storage module comprises an energy storage battery; the load power supply module comprises an inverter power supply unit and a load, wherein the inverter power supply unit is used for converting direct current into alternating current; the alternating current charging unit is electrically connected with the direct current energy storage module through the high-frequency switching power supply module, the alternating current charging unit is electrically connected with the load, the photovoltaic unit is electrically connected with the load through the alternating current power supply module, the photovoltaic unit is electrically connected with the direct current energy storage module, and the direct current energy storage module is electrically connected with the load through the inverter power supply unit.
Description
Technical Field
The utility model relates to a power supply technical field especially relates to a flexible little power supply system of modularization.
Background
In recent years, renewable energy sources such as wind energy and solar energy have been developed greatly. Meanwhile, micro-grids have attracted much attention as a comprehensive integration technology including distributed power supplies such as renewable energy. The microgrid has flexible operation characteristics and can be operated in a grid-connected mode or a grid-disconnected mode. In order to ensure efficient and stable operation of the microgrid, the microgrid needs a stable and reliable modularized motorized microgrid power supply system.
However, the power supply source of the existing modularized mobile micro-power supply system cannot guarantee to provide a stable power supply for the micro-grid, and the power failure condition is easy to occur, so that the operation of the micro-grid is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a mobile little electric power supply system of modularization for solve the defect that appears the outage among the prior art easily, realize providing reliable and stable power supply for little electric wire netting.
The utility model provides a mobile little electric power supply system of modularization, include: the energy storage and protection module, the direct current energy storage module and the load power supply module;
the energy storage guarantee module comprises a photovoltaic unit, an alternating current charging unit and a high-frequency switching power supply module, and the high-frequency switching power supply module is used for converting alternating current into direct current;
the direct current energy storage module comprises an energy storage battery;
the load power supply module comprises an inverter power supply unit and a load, wherein the inverter power supply unit is used for converting direct current into alternating current;
the alternating current charging unit is electrically connected with the direct current energy storage module through the high-frequency switching power supply module, the alternating current charging unit is electrically connected with the load, the photovoltaic unit is electrically connected with the load through the inverter power supply unit, the photovoltaic unit is electrically connected with the direct current energy storage module, and the direct current energy storage module is electrically connected with the load through the inverter power supply unit.
According to the utility model provides a pair of flexible little electric power supply system of modularization, the unit that charges with alternating current includes commercial power system and/or alternator.
According to the utility model provides a pair of mobile little electric power supply system of modularization, alternator is diesel generator.
According to the utility model provides a pair of mobile little electric power supply system of modularization, the utility model provides a commercial power system with be provided with the interlock switch between the alternator.
According to the utility model provides a pair of mobile little power supply system of modularization, the invertion power supply unit includes many invertion power supply unit, many invertion power supply unit group, each group's invertion power supply unit group includes 2 invertion power supply unit, and each group's invertion power supply unit group becomes 1 looks, 1 looks maximum output 20kVA,3 looks maximum output 60kVA, three-phase maximum transient output 60kVA.
According to the utility model provides a pair of mobile little electric power supply system of modularization, direct current energy storage module with be provided with static change over switch between the load.
According to the utility model provides a pair of mobile little electric power supply system of modularization, high frequency switching power supply module includes many high frequency switching power supply rectifier equipment, include an at least reserve high frequency switching power supply rectifier equipment among many high frequency switching power supply rectifier equipment.
According to the utility model provides a pair of mobile little electric power supply system of modularization, energy storage battery comprises lithium iron phosphate storage battery.
According to the utility model provides a pair of flexible little electric power supply system of modularization, photovoltaic unit's rated capacity is 8kWp, photovoltaic unit's rated output DC240V.
According to the utility model provides a pair of flexible little electric power supply system of modularization, the flexible little electric power supply system of modularization still includes:
a monitoring module;
the monitoring module is electrically connected with the energy storage guarantee module, the direct current energy storage module and the load power supply module.
The utility model provides a mobile little electric power supply system of modularization through photovoltaic unit and the alternating current charging unit and the direct current energy storage module in the energy storage guarantee module, all can supply power for load power module, guarantees to have other sufficient and stable power supply to continue the power supply under the unable power supply's in arbitrary power supply source the condition, realizes providing reliable and stable power supply for little electric wire netting.
Drawings
In order to illustrate the technical solutions of the present invention or the prior art more clearly, the drawings used in the following embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is one of the schematic diagrams of a modular motorized micro-electrical power supply system provided by the present invention;
fig. 2 is a second schematic diagram of the modular motorized micro-power supply system provided by the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The modular motorized micro-power supply system of the present invention is described below with reference to fig. 1-2.
Fig. 1 is one of the schematic diagrams of the modular motorized micro-power supply system provided by the present invention, and as shown in fig. 1, the modular motorized micro-power supply system includes: the energy storage and protection module, the direct current energy storage module and the load power supply module;
the energy storage guarantee module comprises a photovoltaic unit, an alternating current charging unit and a high-frequency switching power supply module, and the high-frequency switching power supply module is used for converting alternating current into direct current;
the direct current energy storage module comprises an energy storage battery;
the load power supply module comprises an inverter power supply unit and a load, wherein the inverter power supply unit is used for converting direct current into alternating current;
the alternating current charging unit is electrically connected with the direct current energy storage module through the high-frequency switching power supply module, the alternating current charging unit is electrically connected with the load, the photovoltaic unit is electrically connected with the load through the inverter power supply unit, the photovoltaic unit is electrically connected with the direct current energy storage module, and the direct current energy storage module is electrically connected with the load through the inverter power supply unit.
Optionally, the ac charging unit comprises a utility system and/or an alternator.
Fig. 2 is a second schematic diagram of the modular motorized micro-power supply system provided by the present invention, as shown in fig. 2, the ac charging unit includes a commercial power system and/or an ac generator;
specifically, under the condition that the mains supply system supplies power normally, the mains supply system can be preferentially adopted to supply power to the microgrid (a load on the alternating current side), and the alternating current is converted into direct current through the high-frequency switching power supply module to charge the direct current energy storage module;
optionally, under the condition of abnormal power supply of the mains supply system, the photovoltaic unit can provide supplementary charging for the direct-current energy storage module in the daytime, and the inverter power supply unit is used for completing power supply of a load on the alternating-current side;
optionally, the alternator is a diesel generator.
Alternatively, the diesel generator may be a 8kW (8 kW) rated diesel generator, the rated power may be 8kW, the rated frequency may be 50Hz (50 Hz), the rated output voltage may be AC380V (380V AC), and the generator set (diesel) may operate continuously for 12h (12 hours) (which may include 10% overload operation for 1 hour) under the normal operating condition of the rated output power.
Optionally, in the case that the power supply of the utility power system is abnormal and the power supply of the photovoltaic unit is abnormal, the ac generator and/or the dc energy storage module may be used to supply power to the load on the ac side, wherein whether the ac generator or the dc energy storage module is specifically used may be determined based on the usage environment;
for example, under the condition of sufficient diesel oil in the use environment, the diesel generator can be preferentially adopted to complete the charging of the direct current energy storage module and the direct power supply to the load on the alternating current side through the bypass switch by passing through the high-frequency switching power supply module;
for example, in the case that no diesel oil is provided in the use environment, the dc energy storage module may be preferentially adopted to supply power to the load on the ac side through the inverter power supply unit;
for example, when the remaining capacity of the dc energy storage module is less than thirty percent, the diesel generator is preferably used to charge the dc energy storage module and directly supply power to the load on the ac side through the bypass switch via the high-frequency switching power supply module.
Optionally, an interlock switch is provided between the utility power system and the alternator.
Optionally, a Static Transfer Switch (STS) is disposed between the dc energy storage module and the load.
Optionally, an interlock switch is arranged between a charging interface of the mains supply system and a charging interface of the diesel generator, and under the condition that the AC380V mains supply is available, the AC380V AC can be rectified into dc by preferentially using the mains supply through the high-frequency switch power supply module, so that the charging of the dc energy storage unit is completed. When the actual operation environment has no commercial power supply condition, and the direct current energy storage module and the photovoltaic unit can be put into a diesel generator under the condition that the direct current energy storage module and the photovoltaic unit have no power to supply energy for the alternating current load, the direct current energy storage module is charged through the high-frequency switch power supply module, the alternating current load is directly supplied with power through the bypass switch, and meanwhile, the direct current energy storage module is cut off to supply power to the load through the STS.
Optionally, the inverter power supply unit includes a plurality of inverter power supply devices, the plurality of inverter power supply devices form an inverter power supply device group, each inverter power supply device group includes 2 inverter power supply devices, each inverter power supply device group forms 1 phase, the maximum output of the 1 phase may be 20kVA (20 kilovolt ampere), the maximum output of the 3 phase may be 60kVA (60 kilovolt ampere), and the maximum transient output of the three phases may be 60kVA.
Optionally, the inverter power supply unit may be composed of 6 inverter power supply devices with rated capacity of 10 kVA;
alternatively, the inverter power supply unit may have a rated power of 10kVA, a rated input may be DC220V (DC 220V, wherein "DC" represents DC) (may be between 195V and 264V, wherein "V" represents voltage unit "V"), a rated output may be AC220V (AC 220V, wherein "AC" represents AC), 50Hz (50 Hz), an operating temperature may be between-10 ℃ and 50 ℃, a frequency accuracy may be less than 0.1%, a voltage transient range may be less than 3%, a response recovery time may be less than or equal to 60ms (60 msec), and an overload may be less than or equal to 105% continuously operable;
optionally, each inverter outputs 220V AC, each 2 inverter constitutes 1 phase, the parallel operation output of 6 inverters may be 380V AC, the maximum output of single phase may be 20kVA, the maximum output of 3 phases may be 60kVA, and the maximum transient output of three phases may be 60kVA.
Optionally, the high-frequency switching power supply module includes a plurality of high-frequency switching power supply rectifying devices, and the plurality of high-frequency switching power supply rectifying devices includes at least one standby high-frequency switching power supply rectifying device.
Alternatively, the rated output current of the high-frequency switching power supply rectifying device may be DC20A (direct current 20A, where "a" represents current unit ampere), the rated output voltage may be DC200V to 750V, the rated input current may be less than or equal to AC32A, and the rated input voltage may be AC380V (305V to 530V), and may normally operate in an environment of-40 ℃ to 55 ℃.
Alternatively, the high-frequency switching power supply module may be composed of 3 high-frequency switching power supply rectifying devices rated at 20A, two of which are main devices and one of which is a standby device.
Optionally, the energy storage battery is composed of a lithium iron phosphate battery pack.
Alternatively, the dc energy storage module may be composed of a 33.6kWh (33.6 kWh) lithium iron phosphate battery pack;
alternatively, the technical parameters of the energy storage battery may be as shown in tables 1 to 2 below, where tables 1 to 2 are only examples of the energy storage battery and are not limited to the energy storage battery;
TABLE 1
TABLE 2
Optionally, the operating voltage range of the lithium iron phosphate storage battery pack can be DC175V to 255V, and the rated voltage can be DC240V. In the normal working process of the whole power supply system, the lithium iron phosphate storage battery can provide electric energy for the load through the inverter power supply unit.
Optionally, the rated capacity of the photovoltaic unit is 8kWp (8 Kilowatt-Peak, 8kw Peak), and the rated output of the photovoltaic unit is DC240V.
Optionally, the modular motorized micro-electrical power supply system further comprises:
a monitoring module;
the monitoring module is electrically connected with the energy storage guarantee module, the direct current energy storage module and the load power supply module.
Optionally, as shown in fig. 2, the modular motorized micro-power supply system further includes a monitoring module, which is electrically connected to the energy storage guarantee module, the dc energy storage module, and the load power supply module, and is configured to collect ac and dc bus voltages and feeder currents of the whole power supply system, collect operating states of the switches, receive operating states of the devices through an RS485 communication interface, determine operating states of the devices in the whole power supply system according to the collected information, coordinate the whole system to operate in an optimal state as much as possible, and timely alarm, locate a fault point and isolate a fault in terms of an abnormal operating state.
The RS485 communication interface may be an interface using the RS485 standard, which is a standard for defining electrical characteristics of a driver and a receiver in a balanced digital multipoint system.
Alternatively, the modular motorized microelectronic power supply system can include devices as shown in table 3, table 3 being merely an example of a device list of the modular motorized microelectronic power supply system and not a limitation of the devices of the modular motorized microelectronic power supply system:
TABLE 3
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A modular motorized micro-power supply system, comprising: the energy storage and protection module, the direct current energy storage module and the load power supply module;
the energy storage guarantee module comprises a photovoltaic unit, an alternating current charging unit and a high-frequency switching power supply module, and the high-frequency switching power supply module is used for converting alternating current into direct current;
the direct current energy storage module comprises an energy storage battery;
the load power supply module comprises an inverter power supply unit and a load, wherein the inverter power supply unit is used for converting direct current into alternating current;
the alternating current charging unit is electrically connected with the direct current energy storage module through the high-frequency switching power supply module, the alternating current charging unit is electrically connected with the load, the photovoltaic unit is electrically connected with the load through the inverter power supply unit, the photovoltaic unit is electrically connected with the direct current energy storage module, and the direct current energy storage module is electrically connected with the load through the inverter power supply unit.
2. The modular motorized microelectric power supply system according to claim 1, wherein the ac charging unit comprises a utility system and/or an alternator.
3. The modular motorized microelectric power supply system according to claim 2, wherein the alternator is a diesel generator.
4. The modular motorized microelectric power supply system according to claim 2, wherein an interlock switch is provided between the utility system and the alternator.
5. The modular motorized microelectronic power supply system according to claim 1, wherein the inverter power supply unit comprises a plurality of inverter power supply devices, the plurality of inverter power supply devices form inverter power supply device groups, each inverter power supply device group comprises 2 inverter power supply devices, each inverter power supply device group forms 1-phase inverter power supply device, 1-phase inverter power supply device has a maximum output of 20kVA, 3-phase inverter power supply device has a maximum output of 60kVA, and three-phase inverter power supply device has a maximum transient output of 60kVA.
6. The modular motorized microelectric power supply system according to claim 1, wherein a static transfer switch is disposed between the dc energy storage module and the load.
7. The modular motorized microelectric power supply system according to claim 1, wherein the high frequency switching power module comprises a plurality of high frequency switching power rectifying devices, including at least one backup high frequency switching power rectifying device.
8. The modular motorized microelectric power supply system according to claim 1, wherein the energy storage cell is comprised of a lithium iron phosphate battery pack.
9. The modular motorized microelectric power supply system according to claim 1, wherein the rated capacity of the photovoltaic unit is 8kWp and the rated output of the photovoltaic unit is DC240V.
10. A modular motorized microelectronic power supply system according to any one of claims 1-5, further comprising:
a monitoring module;
the monitoring module is electrically connected with the energy storage guarantee module, the direct current energy storage module and the load power supply module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221671388.4U CN218071017U (en) | 2022-06-29 | 2022-06-29 | Modularized mobile micro-power supply system |
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| CN202221671388.4U CN218071017U (en) | 2022-06-29 | 2022-06-29 | Modularized mobile micro-power supply system |
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