Energy management system based on energy storage type airplane ground static variable power supply

Abstract

The utility model provides an energy management system based on an energy storage type airplane ground static variable power supply, which comprises a box transformer substation intelligent electric meter, a micro-grid controller and a switch which are connected in sequence, and the switch is connected with one or more energy managers. Each energy manager is connected with a corresponding energy storage type aircraft ground power supply and a corresponding aircraft intelligent electric meter, the commercial power input of the energy storage type aircraft ground static variable power supply is connected with an aircraft distribution box, and the energy managers are in communication connection with the aircraft distribution box and the energy storage type aircraft ground static variable power supply. Through the system, the energy storage and feedback functions of the energy storage type aircraft ground power supply can be fully utilized under the peak, flat and valley power utilization conditions of an airport, the regional power grid energy scheduling is realized, the use efficiency of the regional power grid is optimized, and the peak and valley difference is reduced, so that the total capacity demand of the power grid is reduced.

Description

Technical Field

[0001] The utility model relates to the field of static variable power supplies, in particular to an energy management system based on an energy storage type aircraft ground static variable power supply. Background Art

[0002] The characteristics of airport electricity consumption are that there are many types of electrical equipment with high power, and the difference between peak and valley power is large. This leads to a very large power distribution power in the airport planning, and serious waste of grid capacity during the valley period. In addition, the airport electricity consumption is significantly affected by the peak and off-peak seasons of the aviation industry.

[0003] As an important transportation hub, the airport uses a wide variety of power equipment, including but not limited to lighting systems, air conditioning systems, security monitoring equipment, boarding bridges, baggage conveyor belts, etc. These devices are not only numerous, but also have huge power requirements, which places extremely high demands on the stability and reliability of the power system.

[0004] Secondly, the electricity demand of the airport shows significant peak-to-valley differences. During peak hours when flights take off and land frequently, in the morning and evening of the peak tourist season, the passenger flow increases, the flight density increases, and the airport's electricity demand will rise sharply. The peak electricity utilization rate is high, but the distribution system needs to have sufficient capacity to cope with this instantaneous high load. During low-peak hours when there are fewer flights, such as late at night or during the off-peak tourist season, the number of passengers and flights decreases, and the electricity demand will drop significantly. In most cases, there is a large waste of distribution surplus. This volatility poses a great challenge to the planning and management of the power system, making it difficult for the airport to fully optimize the allocation of power resources. It is often necessary to reserve a large distribution surplus to cope with peak demand, which to a certain extent leads to a waste of power resources. Utility Model Content

[0005] The utility model aims to provide an energy management system based on an energy storage aircraft ground static variable power supply, which can utilize the charging and feedback functions of the energy storage aircraft ground power supply, reasonably control the charging and feedback of the energy storage aircraft ground power supply through the collection and processing of regional power grid information, and complete the peak shaving and valley filling of the regional power grid through energy scheduling, thereby improving the utilization rate of the power grid and reducing the construction cost.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] An energy management system based on an energy storage aircraft ground static variable power supply includes a box-type transformer smart meter, a microgrid controller, and a switch connected in sequence, wherein the switch is connected to one or more energy managers;

[0008] The energy manager is used to collect, upload and store the collected electricity and equipment information of each aircraft stand. Each energy manager is connected to a corresponding energy storage aircraft ground power supply and an aircraft stand smart meter. The energy storage aircraft ground static variable power supply AC input is connected to the aircraft stand power distribution box. The energy manager has communication connection with the aircraft stand power distribution box and the energy storage aircraft ground static variable power supply.

[0009] The box-type transformer smart meter is installed in the box-type substation, and the machine-site smart meter is installed in the machine-site distribution box. Each machine-site distribution box is connected to the box-type substation.

[0010] Furthermore, the energy storage aircraft ground static variable power supply includes a charging feedback unit, an energy storage unit, an intermediate frequency inverter unit, a control unit, and a communication unit;

[0011] The charging feedback unit is respectively connected to the energy storage unit and the external aircraft stand distribution box, the energy storage unit is connected to the medium frequency inverter unit, and the medium frequency inverter unit is also connected to the external aircraft;

[0012] The control unit is connected with the charging feedback unit and the medium frequency inverter unit by signals, and the communication unit is connected with the control unit and an external energy manager.

[0013] Furthermore, the energy manager includes an information processing unit, an information storage unit, an RS485 communication unit, a system power supply unit, and a network communication unit. The information processing unit is connected to the information storage unit, the RS485 communication unit, the system power supply unit, and the network communication unit, respectively. The RS485 communication unit is also connected to an external energy storage aircraft ground power supply and an aircraft stand smart meter, and the network communication unit is also connected to an external switch.

[0014] Furthermore, the microgrid controller includes a main control unit, a network communication unit, a system power supply unit, an information storage unit, and a UPS unit. The main control unit is connected to the RS485 communication unit, the network communication unit, the system power supply unit, and the information storage unit. The system power supply unit is connected to the UPS unit. The RS485 communication unit is also connected to an external box-type smart meter, and the network communication unit is also connected to an external switch.

[0015] Furthermore, the power usage and equipment information collected by the energy manager includes:

[0016] Energy storage aircraft ground static variable power supply status information, energy storage aircraft ground static variable power supply usage information, energy storage aircraft ground static variable power supply fault information, and real-time power information of the smart meter at the aircraft stand;

[0017] The status information of the energy storage aircraft ground static variable power supply includes: aircraft position number, equipment name, communication status, current status, battery power. The current status includes five states: standby, running, charging, feedback, and alarm.

[0018] The usage information of the energy storage aircraft ground static variable power supply includes: usage type, start time, end time, usage duration, and power usage. The usage types include: aircraft power supply, battery charging, and battery feedback;

[0019] The fault information of the energy storage aircraft ground static variable power supply includes: fault name, fault code, and occurrence time.

[0020] The advantages of the utility model are:

[0021] In addition to the aircraft ground support power supply function of traditional aircraft ground power supplies, the system also utilizes the energy storage and feedback functions of energy storage aircraft ground power supplies to achieve regional power grid energy scheduling, optimize the utilization efficiency of regional power grids, reduce peak-to-valley differences, and thus reduce the total capacity requirements of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an energy management system based on an energy storage aircraft ground static variable power supply;

[0023] Figure 2 This is a schematic diagram of the structure of the ground static variable power supply for energy storage aircraft;

[0024] Figure 3 is a schematic diagram of the energy manager structure;

[0025] Figure 4 It is a schematic diagram of the microgrid controller structure;

[0026] Figure 5 It is the block diagram of regional power grid connection;

[0027] Figure 6 This is the energy flow diagram during peak time;

[0028] Figure 7 It is the electric energy flow diagram during the flat period;

[0029] Figure 8 This is the diagram of the flow of electric energy during valley time. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Example 1

[0032] This embodiment proposes an energy management system based on an energy storage aircraft ground static variable power supply, please refer to Figure 1 ,and Figure 5, applied to the power grid in a certain area of ​​the airport. All the electricity in this area comes from the box-type substation. The substation is equipped with a smart meter. The system includes a box-type smart meter, a microgrid controller, and a switch connected in sequence. The switch is connected to one or more energy managers. Each energy manager is connected to a corresponding energy storage aircraft ground power supply and an aircraft stand smart meter. The aircraft stand smart meter is set in the aircraft stand distribution box. The aircraft stand distribution box of each aircraft stand is connected to the box-type substation. The energy storage aircraft ground static transformer power supply AC input is connected to the aircraft stand distribution box, and the communication is connected to the energy manager.

[0033] Please refer to Figure 2 The energy storage aircraft ground static variable power supply includes a charging feedback unit, an energy storage unit, a medium frequency inverter unit, a control unit, and a communication unit;

[0034] The charging feedback unit is respectively connected to the energy storage unit and the external aircraft stand distribution box, the energy storage unit is connected to the medium frequency inverter unit, and the medium frequency inverter unit is also connected to the external aircraft;

[0035] The control unit is connected with the charging feedback unit and the medium frequency inverter unit by signals, and the communication unit is connected with the control unit and an external energy manager.

[0036] Please refer to Figure 3 The energy manager includes an information processing unit, an information storage unit, an RS485 communication unit, a system power supply unit, and a network communication unit. The information processing unit is connected to the information storage unit, the RS485 communication unit, the system power supply unit, and the network communication unit respectively. The RS485 communication unit is also connected to an external energy storage aircraft ground power supply and an aircraft stand smart meter. The network communication unit is also connected to an external switch.

[0037] Please refer to Figure 4 The microgrid controller includes a main control unit, a network communication unit, a system power supply unit, an information storage unit, and a UPS unit. The main control unit is connected to the RS485 communication unit, the network communication unit, the system power supply unit, and the information storage unit. The system power supply unit is connected to the UPS unit. The RS485 communication unit is also connected to the external box-type smart meter, and the network communication unit is also connected to the external switch.

[0038] The external 10kV high voltage enters the box-type substation and is stepped down by the substation to supply power to the area. The area contains 10 aircraft positions, equipped with 10 sets of energy storage aircraft ground power supplies, and 10 sets of other power-consuming equipment. In theory, the distribution capacity of each set of aircraft ground power supply should be 90kva, and the distribution capacity of each set of other power-consuming equipment should be 100kva, so the total power grid capacity in the area should be 1900kva. Because the area is equipped with an energy management system, the distribution capacity of each set of aircraft ground power supply can be adjusted to 60kva, and the total capacity demand can be reduced to 1600kva. Due to the energy scheduling function of the energy management system and the peak-shifting power consumption properties of the equipment, the total transformer capacity of the box-type substation can be reduced to 1000kva.

[0039] Example 2

[0040] Based on the energy management system based on the energy storage aircraft ground static variable power supply of Example 1, the energy manager can collect, upload and store the collected electricity and equipment information of each aircraft position. The information collected by the energy manager includes: the energy storage aircraft ground static variable power supply status information, the energy storage aircraft ground static variable power supply usage information, the energy storage aircraft ground static variable power supply fault information, and the real-time power information of the aircraft position smart meter.

[0041] The status information of the energy storage aircraft ground static variable power supply is updated every minute, including: aircraft position number, equipment name, communication status, current status, battery power. The current status includes five states: standby, operation, charging, feedback, and alarm.

[0042] The usage information of the energy storage aircraft ground static variable power supply includes: usage type, start time, end time, usage duration, and power usage. Usage types include: aircraft power supply, battery charging, and battery feedback. Each device generates a piece of usage information after a complete usage process.

[0043] The fault information of the energy storage aircraft ground static variable power supply includes: fault name, fault code, and occurrence time.

[0044] Example 3

[0045] Based on the energy management system based on the energy storage aircraft ground static variable power supply of Example 1, a control algorithm for the operation of a microgrid controller is proposed.

[0046] The operation control strategy of the microgrid controller is divided into three control strategies according to the peak, flat and valley periods.

[0047] Peak control strategy: Figure 6As shown, for energy storage aircraft ground static variable power sources with battery power lower than 30% and not in use, charging will be started first according to the lowest remaining power, and the charging will stop when it reaches 50%. If the total power of the regional power grid exceeds the upper limit of the power grid due to battery charging, the energy storage power sources with battery power higher than 80% and not in use in the region will start feedback according to the highest remaining power, and the feedback will stop when the remaining power reaches 60%. The number of participating feedback shall not exceed the number of charging, and the corresponding number of feedback will stop when charging stops during the period.

[0048] Flat segment control strategy: Figure 7 As shown, if the battery power of the energy storage aircraft ground static variable power supply is less than 50% and is not in use, the lowest remaining power will be charged first and the charging will stop when it reaches 80%. If the total power of the regional power grid exceeds the upper limit of the power grid due to battery charging, the charging quantity will be limited to keep the total power below the upper limit of the power grid. During normal periods, the energy storage aircraft ground static variable power supply will not start feedback.

[0049] Valley section control strategy: Figure 8 As shown, when the battery power of the energy storage aircraft ground static variable power supply is less than 80% and is not in use, the lowest remaining power is prioritized for charging, and the charge stops when it is fully charged. If the total power of the regional power grid exceeds the upper limit of the power grid due to battery charging, the charging quantity is limited to keep the total power below the upper limit of the power grid. During the valley period, the energy storage aircraft ground static variable power supply does not start feedback.

[0050] The microgrid controller allows users to adjust the control strategy parameters according to actual usage. The adjustments include: upper limit of grid power, upper limit of machine distribution capacity, lower limit of peak charging, lower limit of peak charging stop, lower limit of peak feedback, lower limit of peak feedback stop, lower limit of flat charging, lower limit of flat charging stop, lower limit of valley charging, and peak, flat and valley time period settings.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An energy management system based on an energy storage aircraft ground static variable power supply, characterized in that: It includes a box-type transformer smart meter, a microgrid controller, and a switch connected in sequence, and the switch is connected to one or more energy managers; The energy manager is used to collect, upload and store the collected electricity and equipment information of each aircraft position. Each energy manager is respectively connected to a corresponding energy storage aircraft ground power supply and an aircraft position smart meter. The energy storage aircraft ground static variable power supply mains input is connected to the aircraft position distribution box. The energy manager is in communication connection with the aircraft position distribution box and the energy storage aircraft ground static variable power supply. The box-type transformer intelligent electric meter is arranged in the box-type transformer substation, and the machine-position intelligent electric meter is arranged in the machine-position distribution box, and each machine-position distribution box is connected to the box-type transformer substation.

2. The energy management system based on the energy storage aircraft ground static variable power supply according to claim 1 is characterized in that: The energy storage aircraft ground static variable power supply comprises a charging feedback unit, an energy storage unit, an intermediate frequency inverter unit, a control unit, and a communication unit; The charging feedback unit is respectively connected to the energy storage unit and the external aircraft stand distribution box, the energy storage unit is connected to the medium frequency inverter unit, and the medium frequency inverter unit is also connected to the external aircraft; The control unit is signal-connected with the charging feedback unit and the medium frequency inverter unit, and the communication unit is connected with the control unit and an external energy manager.

3. The energy management system based on the energy storage aircraft ground static variable power supply according to claim 1 is characterized in that: The energy manager includes an information processing unit, an information storage unit, an RS485 communication unit, a system power supply unit, and a network communication unit. The information processing unit is connected to the information storage unit, the RS485 communication unit, the system power supply unit, and the network communication unit respectively. The RS485 communication unit is also connected to an external energy storage aircraft ground power supply and an aircraft stand smart meter, and the network communication unit is also connected to an external switch.

4. The energy management system based on the energy storage aircraft ground static variable power supply according to claim 1 is characterized in that: The microgrid controller includes a main control unit, a network communication unit, a system power supply unit, an information storage unit, and a UPS unit. The main control unit is connected to the RS485 communication unit, the network communication unit, the system power supply unit, and the information storage unit. The system power supply unit is connected to the UPS unit. The RS485 communication unit is also connected to an external box-type smart meter, and the network communication unit is also connected to an external switch.

5. The energy management system based on energy storage aircraft ground static variable power supply according to claim 1 is characterized in that: The power consumption and equipment information collected by the energy manager includes: Energy storage aircraft ground static variable power supply status information, energy storage aircraft ground static variable power supply usage information, energy storage aircraft ground static variable power supply fault information, and real-time power information of the smart meter at the aircraft stand; The status information of the energy storage aircraft ground static variable power supply includes: aircraft position number, equipment name, communication status, current status, battery power. The current status includes five states: standby, running, charging, feedback, and alarm. The usage information of the energy storage aircraft ground static variable power supply includes: usage type, start time, end time, usage duration, and power usage. The usage types include: aircraft power supply, battery charging, and battery feedback; The fault information of the energy storage aircraft ground static variable power supply includes: fault name, fault code, and occurrence time.

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