CN118017816A - Airport ground power supply system - Google Patents
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Abstract
The invention provides an airport ground power supply system which is provided with a direct current bus, a multi-source input module, a multi-output electric energy conversion module and a control module, wherein the multi-source input module is used for converging various connected power supplies to the direct current bus, the multi-output electric energy conversion module is used for taking electricity from the direct current bus and converting the electricity into various power supply outputs meeting the electricity consumption requirements of various loads, and the control module can be used for preferentially taking electricity from the power supplies with high priority and preferentially supplying the power to the loads with high priority according to the power supply power of the connected power supplies, the power supply power of the connected loads, the power supply priority of each power supply and the working priority of the negative loads. The airport ground power supply system can realize comprehensive power supply and distribution management of multiple power supply functions and multiple load power consumption, can obtain the working priority of the load according to the importance of the multiple loads, and can automatically cut off the load with low importance when the total power supply power of an accessed power supply is insufficient, thereby guaranteeing ground detection power supply of the important load and guaranteeing navigation safety.
Description
Technical Field
The invention relates to the technical field of power supply systems, in particular to an airport ground power supply system.
Background
The ground power supply of the aircraft is mainly used for continuously and reliably supplying power to the aircraft stopped on the ground, is used for checking electric equipment or starting an aeroengine before the aircraft takes off, reduces the consumption of the aircraft stopped on the ground to own oil-electricity resources, ensures the sufficient energy supply after the aircraft takes off, and ensures the flight performance, namely the ground power supply of the aircraft is an indispensable component of an airport power supply system.
At present, the existing aircraft ground power supply mostly adopts a power supply vehicle or a static change power supply mode, is applied to civil aviation airports, adopts ground mains supply or a diesel generator set as an energy source, has single power supply and lower power supply, has insufficient actual power supply capacity for the detection of various electrical equipment before the aircraft takes off and the comprehensive power supply requirement for the starting of an aeroengine, reduces the detection of various electrical equipment before the aircraft takes off and the working efficiency of the starting of the aeroengine, and reduces the management efficiency of the airports.
Disclosure of Invention
Based on the above, the invention aims to provide an airport ground power supply system, so as to improve the power distribution capacity of a ground power supply to the comprehensive power supply requirement before the take-off of an airplane, improve the detection of various electrical equipment before the take-off of the airplane and the working efficiency of the starting of an aeroengine, and improve the management efficiency of the airport.
One aspect of the present invention provides an airport ground power system comprising: the device comprises a direct current bus, a multi-source input module, a multi-output electric energy conversion module and a control module, wherein,
Each output end of the multi-source input module is connected to the direct current bus respectively, and each input end of the multi-output electric energy conversion module is connected to the direct current bus respectively;
The control module is connected with each load access end of the multi-output electric energy conversion module, used for obtaining the required power of each accessed load, and connected with each output end of the multi-source input module, used for obtaining the power supply power of each accessed power supply;
The control module regulates and controls the working mode of each power supply and the power supply strategy of each load according to the comparison of the required power of each accessed load and the power supply power of each accessed power supply, the preset power supply priority of each power supply and the working priority of each load;
When the total required power of each accessed load is smaller than the total required power of each accessed power supply, the control module distributes power step by step according to the power supply priority of each accessed power supply, so that the output total power supply of each accessed power supply is consistent with the total required power of each accessed load;
When the total required power of each accessed load is larger than the total power supply power of each accessed power supply, the control module unloads the load with low priority level step by step according to the working priority of each accessed load, so that the actual accessed total required power of each accessed load is consistent with the total power supply power of each accessed power supply.
Optionally, the control module cuts off the load with electricity after the electricity consumption of the load with high priority is completed, and continuously regulates and controls the power supply strategy of each load according to the total required power of the rest load until the power supply of all loads is completed.
Optionally, when the total required power of each accessed load is smaller than the total power supply power of each accessed power supply, the step of step-by-step power distribution according to the power supply priority of each accessed power supply includes:
And accumulating the power supply powers of the connected power supplies step by step according to the order of sequentially decreasing the power supply priority, taking the accumulated power supplies as actual connected power supplies when the accumulated total power supply power is larger than the total required power of the connected loads for the first time, controlling the full power output of the connected power supplies with high priority, and controlling the connected power supplies with the lowest priority to supply the power of the residual required power.
Optionally, the access power supply of the multi-source input module comprises a photovoltaic power distribution power supply, a commercial power and generator power distribution power supply and an energy storage power distribution power supply, wherein the power supply priority of the photovoltaic power distribution power supply, the commercial power and generator power distribution power supply and the energy storage power distribution power supply are sequentially reduced.
Optionally, the control module is further configured to detect a state of an energy storage battery of the energy storage power distribution power supply, and determine whether the energy storage power distribution power supply meets a charging condition according to the state of the energy storage battery;
When the energy storage power distribution power supply and other power supplies are simultaneously connected, the control module is used for charging the energy storage power distribution power supply according to the additional power supply power of the other power supplies when the total power supply power of the other power supplies is larger than the total required power of each connected load and the energy storage power distribution power supply meets the charging condition, wherein the additional power supply power is part of the total power supply power exceeding the total required power of each connected load in the total power supply power of the other power supply power supplies.
Optionally, the control module includes an STM32 control board and a main controller, wherein,
The STM32 control board is connected with each load access end of the multi-output electric energy conversion module and each output end of the multi-source input module, is used for sampling electric signals of each access load and each access power supply, and transmits acquired data information to the main controller;
And the main controller is used for processing and judging according to the data information, and regulating and controlling the working modes of all power supplies and the power supply strategies of all loads.
Optionally, the control module further includes a power supply and distribution control unit, where the STM32 control board is further configured to provide a corresponding driving signal to the power supply and distribution control unit according to a processing result of the main controller, and the power supply and distribution control unit is configured to control connection of the multi-source input module and the multi-output electric energy conversion module to the dc bus according to the driving signal.
Optionally, the control module is further provided with a man-machine interaction unit, and the man-machine interaction unit is used for displaying working parameters of each power supply and each load which are connected in real time.
Optionally, the man-machine interaction unit is further configured to adjust a power supply priority of each power supply and a work priority of each load according to the interaction information.
Optionally, the control module adjusts the working priority of each load according to the accessed target working period of each load.
The airport ground power supply system provided by the invention comprises a direct current bus, a multi-source input module, a multi-path output electric energy conversion module and a control module, wherein the multi-source input module is used for providing multi-power input for the direct current bus, so that the power supply is improved, and the detection of various electric equipment before the aircraft takes off and the working efficiency and reliability of the starting of an aeroengine can be effectively improved; the multi-specification output which is matched with the power supply requirements of various loads is provided through the multi-output power conversion module, and the working requirements of the loads are guaranteed, wherein the control module can regulate and control the working modes of the power supplies and the power supply strategies for the loads according to the comparison of the power required by the accessed loads and the power supply power of the accessed power supplies, the preset power supply priority of the power supplies and the preset working priority of the power supplies, match the input power and the output power, coordinate the output power of the accessed power supplies when the power supply power is sufficient, and save energy consumption; when the power supply is insufficient, the power supply is preferentially supplied to the load with high priority, so that the reliability of the aircraft core performance is ensured; and the multi-source input module and the multi-path output electric energy conversion module are communicated through the direct current bus, so that the flexible expansion of the quantity of input power sources and output loads is facilitated. The airport ground power supply system provided by the invention can comprehensively regulate and control the input power and the output power according to the required power of each accessed load and the power supply power of each accessed power supply, balance the system power consumption and ensure the reliability of power supply for the aircraft core performance, improve the comprehensive reliability of the airport ground power supply system and improve the management efficiency of an airport.
Drawings
FIG. 1 is a schematic diagram of the main structure of an airport ground power system in an embodiment of the invention;
The invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
At present, a power supply vehicle or a static power supply guarantee mode is adopted for the ground power supply of the aircraft, the power supply vehicle supplies power according to oil by a generator, the static power supply uses commercial power as a power supply, the power supply source is single, and a single device can only guarantee a single type of machine type, so that the ground power supply has excessive types and varieties, and extremely high configuration waste and extremely high maintenance cost are formed, and the general guarantee requirement for the aircraft in service is difficult to maintain.
Meanwhile, the power supply power of the single power supply is lower, the actual power supply capacity is insufficient for the detection of various electrical equipment before the aircraft takes off and the comprehensive power supply requirement of the starting of the aeroengine, the detection of the various electrical equipment before the aircraft takes off and the working efficiency of the starting of the aeroengine are reduced, the time for the aircraft to stay on the ground is prolonged, and the taking-off and landing management and the throughput expansion of the airport are not facilitated.
If the utility power grid is damaged or the oil guarantee of the generator set is cut off, the energy source of the utility power or the standard generator set cannot be ensured, and the whole airport is paralyzed.
Based on the problems in the prior art, the invention provides an airport ground power supply system, as shown in fig. 1, which is provided with a direct current bus 10, a multi-source input module, a multi-output power conversion module and a control module, wherein each output end of the multi-source input module is respectively connected to the direct current bus, and each access port is used for accessing various power supplies; each input end of the multi-output electric energy conversion module is respectively connected to the direct current bus, and each output port (namely a load access end) is used for accessing each electric load; the power supply of the multiple power supplies connected by the multi-source input module is summarized and coupled through the direct-current bus, the power supply capacity of the system power supply can be effectively improved, the electric energy on the direct-current bus is converted through the multi-output electric energy conversion module, the power supply output of various specifications is provided, corresponding power supply is provided for the detection of various electric equipment of an airplane and various power utilization requirements such as the starting of an aeroengine, a group of complete power supply and electric energy conversion equipment are not required to be provided for each power utilization requirement, the number of hardware equipment of a power supply system can be effectively reduced, and the implementation cost and maintenance cost of the system are saved. And the voltage stability on the direct current bus 10 can be improved by multi-source input, and the output stability of the multi-output electric energy conversion module can be improved.
In this embodiment, the control module is connected to each load access end of the multiple output electric energy conversion module, and is configured to obtain a required power of each load that is connected to the multiple input module, and is connected to each output end of the multiple input module, and is configured to obtain a power supply power of each power supply that is connected to the multiple input module, so as to regulate and control a working mode of each power supply and a power supply strategy for each load according to a comparison between the required power of each load that is connected to the multiple input module and the power supply power of each power supply that is connected to the multiple input module, and a preset power supply priority of each power supply and a preset working priority of each load.
When the total required power of each accessed load is smaller than the total power supply power of each accessed power supply, the control module distributes power step by step according to the power supply priority of each accessed power supply, so that the output total power supply power of each accessed power supply is consistent with the total required power of each accessed load, and the waste of power supply energy sources can be reduced.
When the total required power of each accessed load is larger than the total power supply power of each accessed power supply, the control module unloads the load with low priority level step by step according to the working priority of each accessed load, so that the actual accessed total required power of each accessed load is consistent with the total power supply power of each accessed power supply. When the power supply power is insufficient, the system can supply power to important loads with high priority preferentially, so that the working reliability of the important loads is guaranteed, and the ground guaranteeing capability of the aircraft core performance is improved.
The airport ground power supply system provided by the invention introduces the power supply priority of the power supply and the working priority of the load, and simultaneously detects the power supply power of the power supply and the required power of the load, so that the power distribution of the power supply and the working power distribution of the load can be flexibly managed according to the power supply priority and the working priority of the load, the power supply guarantee capability of important loads of an airplane is improved, the risks of error in detection of electrical equipment and starting of an aeroengine caused by insufficient power supply can be reduced, the reliability of detection of various electrical equipment and starting of the aeroengine before taking off of the airplane is ensured, and the safety of the airplane is improved. And the power source resource scheduling is more accurate, thereby being capable of providing convenience for the management of airport ground power sources and improving the airport management performance.
In this embodiment, the control module further disconnects the load after the high-priority load is powered up, and continuously regulates the power supply strategy for each load according to the total required power of the remaining loads until the power supply for all loads is completed.
In this embodiment, the multi-output power conversion module mainly includes a three-way converter, the first converter 31 is a dc-dc converter, which performs buck conversion according to a dc bus voltage of 600V to provide a 28V dc voltage output, and can be used for ground inspection power supply of lights, electronic devices, navigation systems and communication systems on an aircraft; the second converter 32 is a DC-to-AC converter which performs inversion and buck conversion according to 600V DC bus voltage, provides 115/200V, 400Hz AC voltage output, and can be used for ground inspection power supply of auxiliary power devices on an aircraft; the third converter 33 is a dc-dc converter which down-converts based on a dc bus voltage of 600V to provide a 270V dc voltage output that can be used for ground check power supply for the flight control system on board the aircraft.
The loads with the highest priority level comprise engine operation control, airplane control, fire prevention, navigation, communication, landing gear retraction and the like, and in a 4-redundancy power supply mode adopted by the load, two sets of mutually independent main power supplies, one set of standby power supply and one set of emergency power supply are configured, the working voltage is generally 28V, and the load power supply is connected to the load access end of the first converter 31 of the ground power supply system.
The secondary priority load comprises cabin temperature control, deicing equipment and the like, and adopts 3-redundancy power supply, and comprises two independent main power supplies and a standby power supply, wherein the work distribution of the standby power supply is 115/200V and 400Hz alternating current, and the load power supply end of the standby power supply is connected to the load access end of the second converter 32 of the ground power supply system.
The working priority of other general loads is lowest, such as loads which are unnecessary for airplane protection, passenger life protection and the like, such as kitchen electric equipment and the like.
In a specific example, when the total power supply of the ground power supply is insufficient to supply the load with the highest priority and the load with the secondary priority simultaneously to generate all power requirements, the first converter 31 is started preferentially, after the ground inspection of the load with the highest priority is completed, the first converter 31 is stopped, the second converter 32 is started, and the ground inspection of the load with the secondary priority is performed, so that the first converter 31 and the second converter 32 can be prevented from working in an unreliable state simultaneously when the total power supply of the ground power supply is insufficient, and the ground inspection of the load with the highest priority and the load with the secondary priority is caused to generate false inspection, thereby effectively improving the navigation safety of an aircraft.
In this embodiment, when the total required power of each accessed load is smaller than the total power supply power of each accessed power supply, the step of step-by-step power distribution according to the power supply priority of each accessed power supply includes:
And accumulating the power supply powers of the connected power supplies step by step according to the order of sequentially decreasing the power supply priority, taking the accumulated power supplies as actual connected power supplies when the accumulated total power supply power is larger than the total required power of the connected loads for the first time, controlling the full power output of the connected power supplies with high priority, and controlling the connected power supplies with the lowest priority to supply the power of the residual required power.
In this embodiment, the access power source of the multi-source input module includes a photovoltaic power distribution power source, a commercial power and generator power distribution power source and an energy storage power distribution power source with sequentially reduced power supply priority.
Specifically, the photovoltaic power distribution power supply is composed of photovoltaic power generation units 211, an MPPT controller 212 (Maximum Power Point Tracking ) and a combiner box 213, and the photovoltaic power generation units 211 and the MPPT controller 212 are all provided with a plurality of photovoltaic power generation units and are in one-to-one correspondence to track the maximum power point of each photovoltaic power generation unit 211, so that each photovoltaic power generation unit 211 can work under the maximum power, the photovoltaic power generation efficiency is guaranteed, the power supply power of the photovoltaic power distribution power supply is guaranteed, and the power supply efficiency of the system is improved. And the priority of the photovoltaic power distribution power supply is highest, the photovoltaic is renewable energy, the power supply efficiency is improved, the requirements of the system on other non-renewable energy sources can be reduced, the proportion of the green power supply is improved, and the system contributes to environmental protection.
The utility power and generator distribution power supply is provided with a double-power Automatic TRANSFER SWITCHING equivalent (ATS) and a fourth converter 222, and the power supply of the utility power and the diesel generator is selected by the double-power Automatic switching 221, and is converted from ac to dc to 600V dc by the fourth converter 222. In this embodiment, the priority of the utility power is higher than that of the diesel generator, and since the diesel generator generally works when the utility power grid is damaged, in practical application, only one of the utility power and the diesel generator is generally accessed at the same time, the fourth converter 222 can be shared by the dual-power automatic transfer switch 221, and the cost and the occupied space of the dual-power automatic transfer switch are smaller than those of the inverter, so that the number cost of the inverters can be saved.
The energy storage distribution power supply is provided with an energy storage battery 231 and an energy storage converter 232, and the energy storage converter 232 is connected with the energy storage battery 231 and the direct current bus 10 to control the charging and discharging of the energy storage battery 231.
In this embodiment, the control module is further configured to detect a state of the energy storage battery 231 of the energy storage power distribution power supply, and determine whether the energy storage power distribution power supply meets a charging condition according to the state of the energy storage battery 231, so that when the energy storage power distribution power supply is connected with other power supplies simultaneously, the control module is further configured to charge the energy storage power distribution power supply according to additional power supply power of the other power supplies when the total power supply power of the other power supplies is greater than the total required power of each connected load and the energy storage power distribution power supply meets the charging condition, where the additional power supply power is a part of the total power supply power exceeding the total required power of each connected load.
The system further monitors battery power (SOC) of the energy storage battery 231, when the SOC of the energy storage battery 231 is less than 5%, discharging of the energy storage battery 231 is prohibited, when the SOC of the energy storage battery 231 is greater than 95%, charging of the energy storage battery 231 is prohibited, health condition of the energy storage battery 231 is guaranteed, service life of the energy storage battery 231 is prolonged, and energy efficiency of the system is improved.
Specifically, for example, the total power of other power supplies is 2KW, the total required power of the connected load is 1.5KW, the additional power supply is 500W, if the battery power of the energy storage battery 231 at this time is 50%, and the charging condition is satisfied, the energy storage converter 232 is controlled to take power from the dc bus with the charging power of 500W, so as to charge the energy storage battery 231.
When the energy storage power distribution source is connected with other power distribution sources at the same time and is connected without load, the energy storage battery 231 is charged through other power distribution sources when meeting the charging condition, so that the available electric quantity of the energy storage power distribution source can be ensured to be as sufficient as possible, and the configuration reliability of the energy storage power distribution source is improved.
In this embodiment, the control module includes an STM32 control board 42 and a main controller 41, where the STM32 control board 42 is connected to each load access end of the multi-output power conversion module and each output end of the multi-source input module, and is used for sampling electrical signals of each access load and each access power supply, and transmitting acquired data information to the main controller 41, and the main controller 41 is used for performing processing and judging according to the data information, and regulating and controlling a working mode of each power supply and a power supply strategy for each load.
Specifically, the main controller 41 may control the switching power of each power source and the switching output power of each converter by providing corresponding control signals to the combiner box 213, the dual-power automatic transfer switch 221, the fourth converter 222, the energy storage converter 232, the first converter 31, the second converter 32, and the third converter 33. The level of the digital signal output by the main controller 41 may not necessarily directly drive the controlled elements, and the output thereof may also be converted into driving signals with other levels by the STM32 control board 42, so as to drive each controlled element to perform a corresponding action, and the specific driving implementation may be specifically selected according to the actual situation.
The STM32 control board 42 samples the electrical signals of each access load and each access power supply, and can convert the electrical signals into digital signals, and the main controller 41 can directly process the accessed digital signals, so that the reliability of sampling and data processing can be respectively ensured, and the control precision is improved.
In this embodiment, the control module further includes a power supply and distribution control unit 43, where the STM32 control board 42 is further configured to provide a corresponding driving signal to the power supply and distribution control unit 43 according to a processing result of the main controller 41, and the power supply and distribution control unit 43 is configured to control connection of the multi-source input module and the multi-output power conversion module to the dc bus 10 according to the driving signal.
The power supply and distribution control unit 43 includes, for example, a relay, a circuit breaker, a contactor, a bus bar, and other components, the driving signals of which are analog signals, and the digital signals provided by the main controller 41 are converted into analog signals by the STM32 control board 42, so as to drive the relay, the circuit breaker, the contactor, the bus bar, and other components to operate, and control the on and off of the corresponding power transmission paths.
In this embodiment, the control module is further provided with a man-machine interaction unit (not shown in the figure), which is configured to display, in real time, working parameters of each power source and each load connected thereto through the man-machine interaction unit, so as to facilitate visual display of states of each power source and each load, and also perform early warning through the man-machine interaction unit when an abnormality occurs.
The man-machine interaction unit is mainly in communication connection with the main controller 41, and can display the real-time state of each power supply and load, and also display the historical state of each power supply and load according to the processing capability of the main controller 41. In practical applications, the interaction configuration may be selected according to specific requirements, for example, may be only communicatively connected to the STM32 control board 42, and only exhibit a simple real-time state.
In a specific implementation, the man-machine interaction unit is further used for adjusting the power supply priority of each power supply and the work priority of each load according to interaction information, and the man-machine interaction unit can respond to emergency power distribution requirements of emergency events.
In this embodiment, the control module further adjusts the working priority of each load according to the target working period of each load connected thereto, for example, after landing and stopping of the aircraft, before preparing to take off, the starting working period of the aero-engine can adjust the priority of the aero-engine to be the highest when preparing to take off, in case of emergency, when the aircraft needs to take off in an emergency after landing, the emergency take-off requirement is ensured; or in a low-temperature environment, after the aircraft falls down and stops for a long time, after the load with the highest priority finishes ground inspection, the priorities of the loads such as temperature control and deicing equipment of the cabin with the secondary priority can be adjusted to the highest priority.
When the work priority of each load is properly adjusted and an error occurs in the state identification judgment of the load which has completed the ground inspection, can cut off or suspend the ground power supply, the misoperation caused by the rebound of the power supply and distribution can be prevented.
In practical application, when the system is started, the control module is initialized, self-checking of the system regulation function is further performed, when the system regulation function is abnormal, fault processing and early warning prompt are performed, and when no abnormality exists, the power supply and distribution function of the system is completely started.
In the airport ground power system of this embodiment, the multi-source input module and the multi-output power conversion module take three power inputs and three outputs as examples, in practical application, the number of input power and output conversions can be flexibly configured according to specific requirements, and the multi-source input module and the multi-output power conversion module are uniformly communicated through the direct current bus 10, so that one-to-one adaptation of input power and output specifications is not needed, the input power and the output converter are conveniently designed into a modularized structure, the number of connected modules is flexibly selected according to specific requirements, the situation that a large number of devices are idle under a low-demand scene is avoided, and the waste of hardware resources and the maintenance cost of idle devices can be reduced.
The basic parameters of different loads of different power supplies can be preset and stored in the control module, when the system is started, preset parameters are provided for users to select, so that the system can accurately identify the specific types of the accessed power supplies and loads, an active input function can be provided for users to actively input related parameters according to the specific types of the actually provided power supplies and the supplied loads, and the compatibility of the system to various actual airport configurations is improved.
In this embodiment, when a system fails, the corresponding failure state is processed according to the emergency degree of the failure state, and some specific failure processes are as follows.
When the input source fails, for example, no power is input, or the input power is suddenly lost, all loads are immediately disconnected, all power sources and all switches are turned off, and the control method can be realized by controlling to turn off all physical switches in the power supply and distribution control unit.
When the input power is detected to be reduced, whether the commercial power is lost or not is firstly judged, if yes, whether a diesel generator is provided or not is judged, if the system is provided with the diesel generator, a command can be sent by the main controller 41 to control the dual-power automatic change-over switch 221 to act, and the diesel generator is started. And then, re-judging the output strategy of the power supply, and selecting a corresponding working mode to continue carrying.
If the system is not powered off by the commercial power or the commercial power is not supplied to the diesel generator, i.e. the power supply of the commercial power and the diesel generator cannot be continuously supplied, the output strategy of the power supply is directly judged again, and the corresponding working mode is selected to continue carrying.
When the system judges that the power module has output faults (for example, the power distribution power supply has power input, but no electric energy is output to a direct current bus, or the output voltage is insufficient, and the like), the module is immediately shut down, if a parallel operation condition exists, the parallel operation is cut off, and corresponding loads are cut off.
When the voltage drop of the direct current bus is detected to be out of the preset bus voltage range, the power supply power of the system is smaller than the power supply power of the actually connected load, if an energy storage power distribution power supply is configured in the system, whether the energy storage meets the discharge condition or not is judged, if the discharge condition is met, the energy storage discharge is started, and the direct current bus voltage is improved. If no energy storage power distribution power supply exists in the system, regulating and controlling the load power supply configuration again, and cutting off the corresponding load.
The airport ground power supply system provided by the invention is provided with the direct current bus, the multi-source input module, the multi-output electric energy conversion module and the control module, can realize comprehensive power supply and distribution management of multi-power supply functions and multi-load power consumption, can effectively solve the problem of insufficient power supply redundancy of a single power supply, can obtain the working priority of loads according to the importance of the multi-load, can automatically cut off the load with low importance when the total power supply power of an accessed power supply is insufficient, can ensure ground detection power supply of important loads, can ensure navigation safety, can supply power to the loads according to the priority order, can ensure ground detection power supply of each load, can be efficiently executed according to the order, can effectively improve the completion efficiency and reliability of completing ground detection of all loads, can improve airport management efficiency, and can further ensure navigation safety.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few specific embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. An airport ground power system, comprising: the device comprises a direct current bus, a multi-source input module, a multi-output electric energy conversion module and a control module, wherein,
Each output end of the multi-source input module is connected to the direct current bus respectively, and each input end of the multi-output electric energy conversion module is connected to the direct current bus respectively;
The control module is connected with each load access end of the multi-output electric energy conversion module, used for obtaining the required power of each accessed load, and connected with each output end of the multi-source input module, used for obtaining the power supply power of each accessed power supply;
The control module regulates and controls the working mode of each power supply and the power supply strategy of each load according to the comparison of the required power of each accessed load and the power supply power of each accessed power supply, the preset power supply priority of each power supply and the working priority of each load;
When the total required power of each accessed load is smaller than the total required power of each accessed power supply, the control module distributes power step by step according to the power supply priority of each accessed power supply, so that the output total power supply of each accessed power supply is consistent with the total required power of each accessed load;
When the total required power of each accessed load is larger than the total power supply power of each accessed power supply, the control module unloads the load with low priority level step by step according to the working priority of each accessed load, so that the actual accessed total required power of each accessed load is consistent with the total power supply power of each accessed power supply.
2. The airport surface power system of claim 1, wherein said control module further disconnects the load after the high priority load is powered up, while continuously regulating the power supply strategy to each load according to the total required power of the remaining loads until power to all loads is complete.
3. The airport surface power system of claim 1, wherein the step of progressively distributing power according to the power priority of each of the connected power sources when the total required power of each of the connected loads is less than the total power of each of the connected power sources comprises:
And accumulating the power supply powers of the connected power supplies step by step according to the order of sequentially decreasing the power supply priority, taking the accumulated power supplies as actual connected power supplies when the accumulated total power supply power is larger than the total required power of the connected loads for the first time, controlling the full power output of the connected power supplies with high priority, and controlling the connected power supplies with the lowest priority to supply the power of the residual required power.
4. The airport surface power system of claim 1, wherein the access power source of the multi-source input module comprises a photovoltaic power distribution source, a utility power and generator power distribution source, and an energy storage power distribution source with sequentially decreasing power supply priorities.
5. The airport surface power system of claim 4, wherein said power system comprises,
The control module is also used for detecting the state of an energy storage battery of the energy storage power distribution power supply and judging whether the energy storage power distribution power supply meets the charging condition according to the state of the energy storage battery;
When the energy storage power distribution power supply and other power supplies are simultaneously connected, the control module is used for charging the energy storage power distribution power supply according to the additional power supply power of the other power supplies when the total power supply power of the other power supplies is larger than the total required power of each connected load and the energy storage power distribution power supply meets the charging condition, wherein the additional power supply power is part of the total power supply power exceeding the total required power of each connected load in the total power supply power of the other power supply power supplies.
6. The airport surface power system of claim 1, wherein said control module comprises an STM32 control board and a main controller, wherein,
The STM32 control board is connected with each load access end of the multi-output electric energy conversion module and each output end of the multi-source input module, is used for sampling electric signals of each access load and each access power supply, and transmits acquired data information to the main controller;
And the main controller is used for processing and judging according to the data information, and regulating and controlling the working modes of all power supplies and the power supply strategies of all loads.
7. The airport surface power system of claim 6, wherein said control module further comprises a power supply and distribution control unit, wherein said STM32 control board is further configured to provide corresponding drive signals to said power supply and distribution control unit according to a processing result of said main controller, said power supply and distribution control unit being configured to control connection of said multi-source input module and said multi-output power conversion module to said dc bus according to said drive signals.
8. The airport surface power system of claim 1, wherein the control module is further provided with a man-machine interaction unit for displaying the operating parameters of each power source and each load connected thereto in real time through the man-machine interaction unit.
9. The airport surface power system of claim 8, wherein said human-machine interaction unit is further configured to adjust the power supply priority of each power source and the work priority of each load based on the interaction information.
10. The airport surface power system of claim 1, wherein said control module further adjusts the operational priority of each load based on the target operational period of each load accessed.
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| CN202410051005.0A CN118017816A (en) | 2024-01-12 | 2024-01-12 | Airport ground power supply system |
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