Energy efficiency determination method, device, power supply system, electronic equipment and storage medium

Abstract

The present invention provides an energy efficiency determination method, device, power supply system, electronic device and storage medium. The method is applied to a power supply system, and the power supply system includes at least two power supply devices, including: selecting a target device from the at least two power supply devices, and determining a regulating variable corresponding to the target device; determining a variable interval corresponding to the regulating variable; setting multiple variable values ​​in the variable interval as the output of the target device in turn, and determining the power supply efficiency of the power supply system according to the power value of each power supply device each time the output of the target device is set; searching for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system. Through the present invention, the energy loss of the power supply system is effectively reduced, and high-efficiency control of the power supply system is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communication power supply, and in particular to an energy efficiency determination method, device, power supply system, electronic equipment and storage medium. Background Art

[0002] With the large-scale application of 5G communication technology, the number of micro-stations has increased sharply, the number of stations and energy consumption have increased, and the energy conservation of communication base stations has gradually been put on the agenda. In the context of "dual carbon", reducing carbon emissions and promoting carbon peak are the top priorities of energy construction. In the power supply system of communication base stations, reducing carbon emissions depends on the introduction of new energy sources, such as stacked photovoltaics and energy storage systems, and on the other hand, reducing energy consumption by improving the efficiency of the power supply system.

[0003] In a traditional power supply system, each subsystem in the power supply system is controlled individually. Limited by the certain system input voltage, output voltage and power, the efficiency adjustment of the system is often only adjusted within the system to make each subsystem work in the most efficient state. However, in this case, the power supply efficiency of the entire power supply system is often not optimal. Summary of the invention

[0004] The present invention provides an energy efficiency determination method, device, power supply system, electronic equipment and storage medium, so as to at least solve the technical problem of low power supply efficiency of traditional power supply systems.

[0005] According to a first aspect of the present invention, there is provided an energy efficiency determination method, which is applied to a power supply system, wherein the power supply system comprises at least two power supply devices, and the method comprises:

[0006] Selecting a target device from the at least two power supply devices, and determining a regulation variable corresponding to the target device;

[0007] Determining a variable interval corresponding to the adjustment variable;

[0008] Setting multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determining the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set;

[0009] The maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum are found according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system.

[0010] According to a second aspect of the present invention, there is provided an energy efficiency determination device, which is applied to a power supply system, wherein the power supply system includes at least two power supply devices, and the device includes:

[0011] A first determination module, configured to select a target device from the at least two power supply devices and determine a regulation variable corresponding to the target device;

[0012] A second determination module is used to determine the variable interval corresponding to the adjustment variable;

[0013] A third determination module is used to set multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determine the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set;

[0014] A search module is used to search for a maximum power supply efficiency of the power supply system and a minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system.

[0015] According to a third aspect of the present invention, a power supply system is provided, the power supply system comprising at least two power supply devices, the at least two power supply devices comprising a first power supply, a second power supply and an energy storage device, the first power supply is a primary power supply, the second power supply is a power supply device of a different type from the first power supply, and the power supply system is used to supply power to an electrical device; wherein,

[0016] The first power supply is used to select a target device from the at least two power supply devices and determine a regulating variable corresponding to the target device; determine a variable interval corresponding to the regulating variable; set multiple variable values ​​in the variable interval in turn as outputs of the target device, and determine the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set; and search for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system.

[0017] According to a fourth aspect of the present invention, another power supply system is provided, the power supply system comprising at least two power supply devices and a centralized control unit, the at least two power supply devices comprising a first power supply, a second power supply and an energy storage device, the first power supply is a primary power supply, the second power supply is a power supply device of a different type from the first power supply, and the power supply system is used to supply power to an electrical device; wherein,

[0018] The centralized control unit is used to select a target device from the at least two power supply devices and determine a regulating variable corresponding to the target device; determine a variable interval corresponding to the regulating variable; set multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determine the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set; and search for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system.

[0019] According to a fifth aspect of the present invention, there is provided an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.

[0020] According to a sixth aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of the above method when executed by a processor.

[0021] The above technical solution provided by the embodiment of the present invention has the following advantages compared with the related art:

[0022] Through the energy efficiency determination method provided by the present invention, the output of the target device in the power supply system can be set multiple times, the power value of each power supply device in the power supply system is obtained each time, and the power supply efficiency of the power supply system is calculated, and then the maximum value of the power supply efficiency of the power supply system is found, so as to facilitate the control of the power supply system to supply power when the power supply efficiency is maximum, effectively reduce the energy loss of the power supply system, and realize high-efficiency management and control of the power supply system, so as to at least solve the technical problem of low power supply efficiency of traditional power supply systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments of the present invention are briefly introduced below.

[0024] Figure 1 A communication base station power supply and backup system using a centralized control unit for regulation is provided according to an embodiment of the present invention;

[0025] Figure 2 is a system block diagram using active regulation of a power supply system 1 according to an embodiment of the present invention;

[0026] Figure 3 It is a flow chart for realizing the optimal power supply efficiency of the system according to the implementation of the present invention;

[0027] Figure 4 is a flow chart of an energy efficiency determination method according to an embodiment of the present invention;

[0028] Figure 5 It is a flow chart of an optimal control method for realizing energy efficiency of a power supply system of a communication base station provided in accordance with an embodiment of the present invention;

[0029] Figure 6 This is a process block 1 for achieving optimal system power supply efficiency according to the implementation of the present invention;

[0030] Figure 7 It is a power flow block diagram of a communication base station backup power supply system proposed according to an embodiment of the present invention;

[0031] Figure 8 This is a process block 2 for achieving optimal system power supply efficiency according to the implementation of the present invention;

[0032] Fig. 9 is a structural block diagram of an energy efficiency determination device provided according to an embodiment of the present invention;

[0033] Fig.10 It is a structural schematic diagram of an electronic device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such usage is interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to".

[0036] In order to solve the technical problems existing in the related art, an energy efficiency determination method is provided in this embodiment. The technical scheme of the present invention and how the technical scheme of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0037] This embodiment provides an energy efficiency determination method, which is applied to a power supply system. Preferably, the power supply system in this embodiment includes at least two power supply devices.

[0038] Optionally, at least two power supply devices include a first power supply, a second power supply and an energy storage device, wherein the first power supply is a primary power supply, and the second power supply is a power supply device of a different type from the first power supply, for example, the primary power supply is a power grid power supply, and the second power supply is a photovoltaic system; the power supply system realizes the purpose of supplying power to electrical equipment.

[0039] In an optional embodiment, taking the communication base station backup power supply system as an example, the base station backup power supply system is composed of a power supply system 1 (i.e. the first power supply mentioned above) for converting the municipal power, a power supply system 2 for re-converting the output of the power supply system 1, other power supply systems (i.e. the second power supply mentioned above), and an energy storage system for storing electric energy and backup power (i.e. the energy storage device mentioned above).

[0040] It should be noted that other power supply systems include but are not limited to photovoltaic cells, wind power generation devices and other new energy power generation and power supply systems.

[0041] In order to achieve overall control of the energy efficiency of the communication base station power supply and backup system, it is necessary to realize data transmission between different systems, including but not limited to wireless local area network transmission (Wireless Local Area Network, referred to as WLAN), Bluetooth transmission (Bluetooth), RS485 transmission, controller area network transmission (Controller Area Network, referred to as CAN); the overall energy efficiency control of the system can be achieved by centralized regulation or active regulation of the power supply system 1.

[0042] In an optional embodiment of the present case, the power supply system also includes a centralized control unit. When the embodiment of the present invention is applied to the centralized control unit, the centralized control unit receives the third power value of each power supply device; the centralized control unit calculates the power supply efficiency of the power supply system based on the third power value.

[0043] Furthermore, the output of the target device is adjusted by the centralized control unit to be the minimum output value of the target device, and the centralized control unit sends a second control signal to each power supply device to adjust the power supply system to supply power to the power-consuming device when the power supply efficiency is at the maximum value, wherein the second control signal carries the target value of each power supply device. It should be noted that when the target device is a primary power supply, the target value is the voltage value of each power supply device; when the target device is an energy storage device, the target value is the power value of each power supply device.

[0044] For example, when the centralized control unit is in control, the block diagram of the centralized control system is as follows: Figure 1 As shown, Figure 1It is a communication base station power supply and backup system provided by an embodiment of the present invention and regulated by a centralized control unit. The centralized control means that other power supply systems, power supply system 1, energy storage system and secondary power supply system all transmit system information (not limited to one or more of voltage, current, input power, output power, efficiency and other information) to the centralized control unit for centralized processing. The centralized control unit processes the system information and sends control signals to each subsystem according to the processing results to adjust the overall energy efficiency to the optimal level.

[0045] In an optional embodiment of the present case, applied to a first power supply, the first power supply uses the input of the target device to determine the first power value of the first power supply, and receives the second power value of the power supply device other than the first power supply in the power supply system; the first power supply calculates the power supply efficiency of the power supply system based on the first power value and the second power value.

[0046] Optionally, when the primary power supply (i.e., the first power supply mentioned above) is actively adjusted, the primary power supply adjusts the output of the target device to the minimum output value of the target device; the primary power supply sends a first control signal to the power supply device other than the primary power supply among at least two power supply devices to adjust the power supply system to supply power to the power-consuming device at the maximum power supply efficiency, wherein the first control signal carries the target value of the power supply device other than the primary power supply among at least two power supply devices. It should be noted that when the target device is a primary power supply, the target value is the voltage value of each power supply device; when the target device is an energy storage device, the target value is the power value of each power supply device.

[0047] The system block diagram using active regulation of power system 1 is as follows Figure 2 As shown, Figure 2 It is a system block diagram using active regulation of the power supply system 1 provided according to an embodiment of the present invention. The primary power supply active regulation system, namely the power supply system 1, is responsible for adjusting the overall energy efficiency of the system. In the primary power supply active regulation system, the secondary power supply system transmits system information (not limited to one or more of the information such as voltage, current, input power, output power, efficiency, etc.) to the power supply system 1 through data transmission; at the same time, other power supply systems and energy storage systems also transmit system information to the power supply system 1. The power supply system 1 serves as the entire processing center and performs unified deployment according to the current status of each system to control the overall energy efficiency of the primary power output regulation system to be optimal.

[0048] In an optional embodiment of the present case, when the system is running, the second power supply is preferentially set to supply power to the electrical equipment, wherein the current second input power of the second power supply is the maximum power supply power of the second power supply; when the second input power is less than the total power consumption of the electrical equipment, the first power supply is used to supply power to the electrical equipment; when the second input power is greater than the total power consumption of the electrical equipment, the energy storage device is in a charging state.

[0049] It can be understood that the primary power supply or centralized control unit gives priority to setting other power supply systems to supply power to the electrical equipment; when the maximum power supply power of other power supply systems is greater than the total power consumption of the electrical equipment, the energy storage system enters the charging state, and only other power supply systems supply power to the system, and the energy storage system and the electrical equipment are all outputs of the system.

[0050] Furthermore, when the power of the energy storage system (i.e. the above-mentioned energy storage device) reaches the discharge threshold, the energy storage system and other power supply systems can be set to power the system; the energy storage system and the primary power supply can also be set to power the system.

[0051] In addition, when the maximum power supply power of other power supply systems is less than the total power consumption of the power-consuming equipment, the primary power supply is used to power the power-consuming equipment.

[0052] Further, determine whether the first input power of the first power supply is greater than a first preset value, wherein the first preset value represents the power difference between the second input power and the total power consumption of the electrical equipment; when the first input power is less than the first preset value, set the first power supply to supplement power and set the energy storage device to a discharging state to supply power to the electrical equipment.

[0053] In this embodiment, when the input power of the primary power supply is less than the difference between the power consumption of other power supplies and the power-consuming equipment, other power supply systems, primary power supplies and energy storage systems are set to power the system; when the input power of the primary power supply is greater than the difference between the power consumption of other power supply systems and the power-consuming equipment, other power supply systems and primary power supplies are set to power the system.

[0054] Figure 3 This is a flow chart for achieving optimal system power supply efficiency according to the implementation of the present invention, such as Figure 3 As shown, when the system is operating normally, if the overall energy efficiency control of the system adopts centralized regulation, the centralized control unit sends a control signal to the second power supply (i.e., the other power supply system mentioned above, such as the photovoltaic system), and the second power supply is preferably used to power the system; if the system adopts power supply system 1 (i.e., the first power supply mentioned above) to actively adjust, the power supply system 1 sends a control signal to the second power supply, and the second power supply is preferably used to power the system. If other power supply systems are selected, power supply is given priority. If the power supply of other power supply systems is insufficient, the power grid will be given priority to supplement. The energy storage system has both system backup power and energy storage functions for the remaining energy of other power supply systems. On the one hand, the energy storage system needs to reserve enough electric energy to prevent power loss of electrical equipment after a power outage in the power grid; on the other hand, the energy storage system needs to reserve some energy storage space to store the remaining power generation of other power supply systems, which means that when the power of the energy storage system is higher than the discharge threshold C1, the energy storage system can actively release part of the electric energy as a supplement to the system power supply.

[0055] It should be noted that the discharge threshold C1 is generally maintained at around 80%, and 20% is generally used to store the remaining energy of photovoltaic power generation; the discharge threshold is the upper limit of the photovoltaic energy storage threshold set by the energy storage system itself.

[0056] The power supply / backup system of a traditional communication base station often includes the following components: a primary power supply system (AC-DC) that converts AC power into direct current power, and a secondary power supply system (DC-DC) that converts the DC output of the primary power supply system into high and low voltage. The power supply system in this embodiment can jointly adjust the working states of different subsystems (i.e., the above-mentioned power supplies and energy storage devices) to make the entire power supply system operate in the optimal energy efficiency state.

[0057] Figure 4 is a flow chart of an energy efficiency determination method according to an embodiment of the present invention. Figure 4 As shown, the process includes the following steps:

[0058] Step S402: Select a target device from at least two power supply devices, and determine a regulation variable corresponding to the target device.

[0059] The execution subject of this embodiment may be a primary power supply, or a centralized control unit may be provided in the power supply system, that is, the primary power supply or the centralized control unit executes the optimal energy efficiency program of the power supply system.

[0060] Preferably, the target device in this embodiment may be the above-mentioned primary power supply or the above-mentioned energy storage device.

[0061] In a specific implementation, when the target device is a first power supply, the regulated variable is the output voltage of the first power supply; when the target device is an energy storage device, the regulated variable is the output power of the energy storage device.

[0062] Step S404: determine the variable interval corresponding to the adjustment variable.

[0063] Step S406, setting multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determining the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set.

[0064] When the primary power supply is actively adjusted, the above step S406 specifically includes: the first power supply in the power supply system uses the input of the target device to determine the first power value of the first power supply, and receives the second power value of the power supply device other than the first power supply in the power supply system; the first power supply calculates the power supply efficiency of the power supply system based on the first power value and the second power value.

[0065] In the case of centralized control, the above step S406 specifically includes: the centralized control unit receives the third power value of each power supply device; and the centralized control unit calculates the power supply efficiency of the power supply system according to the third power value.

[0066] For example, the variable interval of the output voltage of the primary power supply can be set, that is, [lower limit voltage value, upper limit voltage value], such as the voltage scanning interval [48V, 58V], and then the step size is adjusted, for example, △V = 1V, then the voltage interval sequence can be [48V, 49V, 50V, 51V, 52V, 53V, 64V, 55V, 56V, 57V, 58V].

[0067] In an example of this embodiment, when the power supply system is running, for example, the power supply system includes a first power supply, a second power supply, an energy storage device and a third power supply, and the first power supply adjusts the output voltage to the efficiency scan lower limit voltage Vmin (i.e., the above-mentioned lower limit voltage value), at this time, the input power of the first power supply is P1. At the same time, each other subsystem in the power supply system feeds back its own data to the primary power supply or the centralized control unit, that is, the second power supply, the energy storage device, etc. feed back the input power, and the third power supply is the output power, and then the primary power supply or the centralized control unit calculates the power supply efficiency of the power supply system.

[0068] Step S408 , searching for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system.

[0069] For example, Figure 5 is a flow chart of an optimal control method for realizing energy efficiency of a communication base station power supply system provided by an embodiment of the present invention, such as Figure 5 As shown, the control variable is set to the lower limit of the scanning area (i.e., the lower limit voltage value or the output power of the energy storage device mentioned above) to start the optimal efficiency scanning process; then the control variable reaches the upper limit of the scanning interval, and the minimum value of the output voltage of the primary power supply or the output power of the energy storage device when the efficiency point is the highest, as well as the corresponding maximum power supply efficiency value, are selected, and then the system is set to operate at the optimal efficiency point.

[0070] In a switching power supply system, efficiency is affected by multiple factors such as input voltage, output voltage, and output power, and in the entire communication base station power supply and backup system, the overall efficiency of the system is also affected by factors such as cable loss, which will be different under different voltage and power conditions. Therefore, a communication base station power supply and backup system proposed in an embodiment of the present invention can be used to control the control variables (i.e., the above-mentioned adjustment variables) for optimal system energy efficiency, including the output voltage of the first power supply and the output power of the energy storage system.

[0071] Through the energy efficiency determination method provided by the present invention, the output of the target device in the power supply system can be set multiple times, the power value of each power supply device in the power supply system is obtained each time, and the power supply efficiency of the power supply system is calculated, and then the maximum value of the power supply efficiency of the power supply system is found, so as to facilitate the control of the power supply system to supply power when the power supply efficiency is maximum, effectively reduce the energy loss of the power supply system, and realize high-efficiency management and control of the power supply system, so as to at least solve the technical problem of low power supply efficiency of traditional power supply systems.

[0072] When the lower limit value of the variable interval is set to the first output of the target device, the current power supply efficiency value of the power supply system is recorded as the maximum power supply efficiency of the power supply system and the lower limit value is the minimum output value of the target device;

[0073] When the variable value obtained by each increment of the lower limit value is set as the output of the target device, the current power supply efficiency of the power supply system is compared with the maximum power supply efficiency determined last time;

[0074] If the current power supply efficiency is greater than the maximum power supply efficiency determined last time, the current power supply efficiency is updated to the maximum power supply efficiency of the power supply system, and the current output of the target device is updated to the minimum output value of the target device;

[0075] Until the output of the target device reaches the upper limit of the variable interval and the comparison of the maximum power supply efficiency of the upper limit of the variable interval is completed, the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply system is at the maximum power supply efficiency are obtained.

[0076] Furthermore, taking the primary power active regulation system as an example, when the target device is the primary power, the regulation variable is the output voltage of the primary power, and the system optimal energy efficiency program is executed, including the following steps:

[0077] When the lower limit voltage value of the variable interval is set to the first output of the primary power supply, the current power supply efficiency value of the power supply system is recorded as the maximum power supply efficiency of the power supply system and the lower limit voltage value is the minimum output voltage value of the primary power supply;

[0078] When the voltage value obtained by each incremental increase of the lower limit voltage value is set as the output of the primary power supply, the current power supply efficiency of the power supply system is compared with the maximum power supply efficiency determined last time;

[0079] If the current power supply efficiency is greater than the maximum power supply efficiency determined last time, the current power supply efficiency is updated to the maximum power supply efficiency of the power supply system, and the current output of the primary power supply is updated to the minimum output value of the primary power supply;

[0080] Until the output of the primary power supply reaches the upper limit voltage value of the variable interval and the comparison of the maximum power supply efficiency of the upper limit voltage value of the variable interval is completed, the maximum power supply efficiency of the power supply system and the minimum output voltage of the primary power supply when the power supply system is at the maximum power supply efficiency are obtained.

[0081] Figure 6 This is a flow chart 1 for achieving optimal system power supply efficiency according to the implementation of the present invention. The regulation process with the output voltage of the power supply system 1 (i.e., the first power supply mentioned above) as the control quantity is as follows:

[0082] Step 1: At time 1 of system operation, power system 1 adjusts the output voltage to the efficiency scan lower limit voltage Vmin. At this time, the input power of power system 1 is P1. At the same time, each subsystem sends data to the primary energy system. After receiving the data, power system 1 processes and obtains the input power P2 of other power supply systems, the input power P3 of the energy storage system, and the output power P4 of the secondary power system at the current moment. The overall efficiency of the current system is calculated to be η1, and the current system output voltage V1 and efficiency η1 are recorded as the maximum efficiency point, marked as Vm and η max .

[0083] Step 2: Power system 1 actively regulates the output voltage to V s =V1+ΔV. After the system runs stably, each subsystem sends the current system data to the power system 1 again, and records the input power of the primary power supply as P1. After receiving the data, the power system 1 processes the input power P2 of other power supply systems, the input power P3 of the energy storage system, and the output power P4 of the secondary power supply system at the current moment, and calculates the overall efficiency of the current system as η2.

[0084] Step 3: Compare efficiency η2 with efficiency η max , if η2>η max , record η max =η2,V m =V s Then execute step 4. If η2≤η max , then go directly to step 4.

[0085] Step 4: Determine whether the current output voltage of the power supply system 1 has reached the upper limit Vmax of the voltage scanning range. If so, execute step 5; if not, mark the current system voltage Vs as V1, that is, V1 = V s Then return to step 2.

[0086] Step 5: Set the output voltage of power supply system 1 to the system voltage Vm corresponding to the maximum efficiency point recorded during the scanning process, and send the voltage value Vm to other subsystems (other power supply systems, energy storage systems) through communication so that the entire system operates in an equivalent optimal state.

[0087] According to the above embodiment, Figure 7 FIG. 1 is a power flow diagram of a communication base station backup power supply system proposed in an embodiment of the present invention. Figure 7 As shown, the AC power and other power supply devices in the system have fixed output power terminals, and the energy storage equipment has both energy storage and discharge functions, which are divided into discharge state and energy storage state according to actual working conditions.

[0088] In an example, when the power supply system provides power to the primary power supply, other power supply systems and the energy storage system, and the energy storage system is in a discharging state, the power supply efficiency calculation expression of the system is:

[0089]

[0090] In another example, when the power supply system provides system power supply to other power supply systems and a primary power source, if the energy storage device enters a charging state, the energy storage device receives electric energy from the system. At this time, the power supply efficiency expression of the entire conversion unit is:

[0091]

[0092] In an example of this implementation, when the energy storage system reaches the discharge threshold C1, the energy storage system can participate in the system energy efficiency regulation by controlling the discharge power. The implementation method is that the power supply system 1 or the centralized control unit receives that the energy storage system has reached the discharge threshold C1, and the power supply system 1 or the centralized control unit starts to send a discharge power reference value to the energy storage system, and scans the system efficiency under different energy storage system discharge powers within the energy storage system discharge power range to determine the energy storage system discharge power with the best system efficiency.

[0093] Furthermore, the primary power supply active regulation system, when the target device is an energy storage device, the regulation variable is the output power of the energy storage device, and the system optimal energy efficiency program is executed, including the following steps:

[0094] When the lower limit power value of the variable interval is set to the first output of the energy storage device, the current power supply efficiency value of the power supply system is recorded as the maximum power supply efficiency of the power supply system and the lower limit power value is the minimum output power value of the energy storage device;

[0095] When the power value obtained by each incremental increase of the lower limit power value is set as the output of the energy storage device, the current power supply efficiency of the power supply system is compared with the maximum power supply efficiency determined last time;

[0096] If the current power supply efficiency is greater than the maximum power supply efficiency determined last time, the current power supply efficiency is updated to the maximum power supply efficiency of the power supply system, and the current output power of the energy storage device is updated to the minimum output power of the energy storage device;

[0097] Until the output of the target device reaches the upper limit of the variable interval, and the comparison of the maximum power supply efficiency of the upper limit of the variable interval is completed, the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply system is at the maximum power supply efficiency are obtained. Figure 8 As shown, Figure 8 This is the second process block for achieving optimal system power supply efficiency according to the implementation of the present invention.

[0098] The present invention is further described below in conjunction with a specific embodiment: Specific embodiment 1

[0100] In a system using active regulation of power supply system 1, in this system, power supply system 1 is the primary power supply system, power supply system 2 is the secondary power supply system, and other power supply devices are photovoltaic cells. The total power consumption of the base station electrical equipment is P4, and the maximum power generated by the photovoltaic cell is P2 (P2 <P4);

[0101] In this system, other power supply devices are set up first to supply power to the system. When the input power of other power supply devices is less than the total power consumption of the power-consuming equipment, and the power supply of the primary power supply is greater than the difference between the power supply of other power supply devices and the total power consumption of the power-consuming equipment, the primary power supply is supplemented, where the mains power supplements the power supply P1, and the energy storage system does not charge or discharge, that is, P3 = 0. The calculation formula for the total system efficiency is:

[0102]

[0103] Assuming that the current output voltage of the primary power supply system is 53V, the total power consumption of the base station electrical equipment (output power of the secondary power supply system) is P4=5kW, the AC input power is P1=2.5kW, and the photovoltaic power generation power is P2=3kW. Calculation shows that the overall system efficiency is 90.9% at this time.

[0104] The system presets a power system output voltage scanning interval of [48V, 58V], and the adjustment step length △V = 1V.

[0105] At time 1, the system starts energy efficiency adjustment, and the primary power system adjusts the output voltage to the minimum scan voltage value Vmin = 48V. The input power P1 = 2.7kW of the primary power system is recorded. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall efficiency of the system is calculated to be 87.72%. Record Vm = 48V, η max =87.72%.

[0106] At time 2, the primary power system adjusts the output power to 49V, and records the input power of the primary power system at this time P1 = 2.65kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 88.50%, which is greater than the η recorded at time 1. max , record Vm = 49V, η max =88.50%.

[0107] At time 3, the primary power system adjusts the output power to 50V, and records the input power of the primary power system at this time P1 = 2.6kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 89.29%, which is greater than the η recorded at time 2. max , record Vm = 50V, η max =89.29%.

[0108] At time 4, the primary power system adjusts the output power to 51V, and records the input power of the primary power system at this time P1 = 2.57kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 89.77%, which is greater than the η recorded at time 3. max , record Vm = 51V, η max =89.77%.

[0109] At time 5, the primary power system adjusts the output power to 52V, and records the input power of the primary power system at this time P1 = 2.53kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 90.42%, which is greater than the η recorded at time 4. max , record Vm = 52V, η max =90.42%.

[0110] At time 6, the primary power system adjusts the output power to 53V, and records the input power of the primary power system at this time, P1 = 2.5kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 90.91%, which is greater than the η recorded at time 5. max, record Vm = 53V, η max =90.91%.

[0111] At time 7, the primary power system adjusts the output power to 54V, and records the input power of the primary power system at this time P1 = 2.47kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 91.41%, which is greater than the η recorded at time 6. max , record Vm = 54V, η max =91.41%.

[0112] At time 8, the primary power system adjusts the output power to 55V, and records the input power of the primary power system at this time P1 = 2.45kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 91.74%, which is greater than the η recorded at time 7. max , record Vm = 55V, η max =91.74%.

[0113] At time 9, the primary power system adjusts the output power to 56V, and records the input power of the primary power system at this time P1 = 2.46kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 91.58%, which is less than the η recorded at time 8. max , record Vm = 55V, η max =91.74%.

[0114] At time 10, the primary power system adjusts the output power to 57V, and records the input power P1 of the primary power system at this time = 2.5kW. At the same time, according to the data sent by each subsystem, the primary power system processes the photovoltaic subsystem input power P2 = 3kW, the energy storage system P3 = 0, and the secondary power system output power P4 = 5kW. The overall system efficiency at this time is calculated to be 90.91%, which is less than the η recorded at time 8. max , record Vm = 55V, η max =91.74%.

[0115] At time 11, the primary power supply system adjusts the output power supply to 58V. Record the input power P1 = 2.53kW of the primary power supply system at this time. At the same time, according to the data sent by each subsystem, the primary power supply system processes and obtains the input power P2 = 3kW of the photovoltaic subsystem, P3 = 0 of the energy storage system, and the output power P4 = 5kW of the secondary power supply system. Calculate that the overall system efficiency at this time is 90.42%, which is less than η recorded at time 8 max , record Vm = 55V, η max = 91.74%.

[0116] By time 11, the output voltage of the primary power supply system has reached the upper limit voltage value Vmax = 58V of the scan. End the scan. Query the recorded maximum efficiency as η max = 91.74%, corresponding to the output voltage value of the primary power supply system being 55V. Adjust the output voltage of the primary power supply system to 55V.

[0117] The overall system efficiency before adjustment is 90.9%, and the overall system efficiency after adjustment is 91.74%, with an increase of 0.84%.

[0118] The data during the scan is shown in the following table:

[0119] Table 1 Scan process data:

[0120] Moment 1 Moment 2 Moment 3 Moment 4 Moment 5 Moment 6 Moment 7 Time 8 Time 9 Time 10 Time 11 V1(V) 48 49 50 51 52 53 54 55 56 57 58 P1(kW) 2.7 2.65 2.6 2.57 2.53 2.5 2.47 2.45 2.46 2.5 2.53 P2(kW) 3 3 3 3 3 3 3 3 3 3 3 P3(kW) 0 0 0 0 0 0 0 0 0 0 0 P4(kW) 5 5 5 5 5 5 5 5 5 5 5 η 87.72％ 88.50％ 89.29％ 89.77％ 90.42％ 90.91％ 91.41％ 91.74％ 91.58％ 90.91％ 90.42％ Vm(V) 48 49 50 51 52 53 54 55 55 55 55 ηmax 87.72％ 88.50％ 89.29％ 89.77％ 90.42％ 90.91％ 91.41％ 91.74％ 91.74％ 91.74％ 91.74％ Specific Embodiment 2

[0122] In a system using a centralized control unit, in this system, power supply system 1 is the primary power supply system, power supply system 2 is the secondary power supply system, and other power supply devices are photovoltaic cells.

[0123] In this system, the system is powered by the primary power supply, other power supply devices, and energy storage equipment together. Among them, the total power consumption of the base station electrical equipment is P4, the maximum power generation of the photovoltaic cell is P2 (P2 < P4), the power supply supplemented by the commercial power is P1, and the discharge power of the energy storage system is P3. The calculation formula for the overall system efficiency is:

[0124]

[0125] Assume that the current output voltage of the primary power supply system is 53V. At this time, the total power consumption of the base station electrical equipment (output power of the secondary power supply system) is P4 = 5.2kW, the maximum input power of the commercial power is P1 = 0.5kW, the photovoltaic power generation is P2 = 3kW, and the energy storage system supplies 2kW. It can be calculated that the overall system efficiency at this time is 87.27%.

[0126] The preset output voltage scan range of the primary power supply system is [48V, 58V], and the adjustment step size △V = 1V.

[0127] At time 1, the system starts energy efficiency adjustment. The centralized control unit sends a control signal to the primary power system. After receiving the signal, the primary power system adjusts the output voltage to the minimum scan voltage value Vmin=48V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1=0.5kW, the input power of the photovoltaic subsystem P2=3kW, the energy storage system P3=2.2kW, and the output power of the secondary power system P4=4.8kW. The overall efficiency of the system is calculated to be 84.21%. Record Vm=48V, η max =84.21%.

[0128] At time 2, the centralized control unit sends data to adjust the output voltage of the primary power system to 49V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1 = 0.5kW, the input power of the photovoltaic subsystem P2 = 3kW, the energy storage system P3 = 2.15kW, and the output power of the secondary power system P4 = 4.8kW. The overall efficiency of the system is calculated to be 84.96%. Record Vm = 49V, η max =84.96%.

[0129] At time 3, the centralized control unit sends data to adjust the output voltage of the primary power system to 50V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1 = 0.5kW, the input power of the photovoltaic subsystem P2 = 3kW, the energy storage system P3 = 2.13kW, and the output power of the secondary power system P4 = 4.8kW. The overall efficiency of the system is calculated to be 85.26%. Record Vm = 50V, η max =85.26%.

[0130] At time 4, the centralized control unit sends data to adjust the output voltage of the primary power system to 51V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1 = 0.5kW, the input power of the photovoltaic subsystem P2 = 3kW, the energy storage system P3 = 2.1kW, and the output power of the secondary power system P4 = 4.8kW. The overall efficiency of the system is calculated to be 85.71%. Record Vm = 51V, η max =85.71%.

[0131] At time 5, the centralized control unit sends data to adjust the output voltage of the primary power system to 52V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1 = 0.5kW, the input power of the photovoltaic subsystem P2 = 3kW, the energy storage system P3 = 2.05kW, and the output power of the secondary power system P4 = 4.8kW. The overall efficiency of the system is calculated to be 86.49%. Record Vm = 52V, η max =86.49%.

[0132] At time 6, the centralized control unit sends data to adjust the output voltage of the primary power system to 53V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes and obtains the input power P1=0.5kW of the primary power system, the input power P2=3kW of the photovoltaic subsystem, the energy storage system P3=2kW, and the output power P4=4.8kW of the secondary power system. The overall efficiency of the system is calculated to be 87.27%. Record Vm=53V, η max =87.27%.

[0133] At time 7, the centralized control unit sends data to adjust the output voltage of the primary power system to 54V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes and obtains the input power P1=0.5kW of the primary power system, the input power P2=3kW of the photovoltaic subsystem, the energy storage system P3=1.9kW, and the output power P4=4.8kW of the secondary power system. The overall efficiency of the system is calculated to be 88.89%. Record Vm=54V, η max =88.89%.

[0134] At time 8, the centralized control unit sends data to adjust the output voltage of the primary power system to 55V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes and obtains the input power P1=0.5kW of the primary power system, the input power P2=3kW of the photovoltaic subsystem, the energy storage system P3=1.8kW, and the output power P4=4.8kW of the secondary power system. The overall efficiency of the system is calculated to be 90.57%. Record Vm=55V, η max =90.57%.

[0135] At time 9, the centralized control unit sends data to adjust the output voltage of the primary power system to 56V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1 = 0.5kW, the input power of the photovoltaic subsystem P2 = 3kW, the energy storage system P3 = 1.9kW, and the output power of the secondary power system P4 = 4.8kW. The overall efficiency of the system is calculated to be 88.89%. Record Vm = 55V, η max =90.57%.

[0136] At time 10, the centralized control unit sends data to adjust the output voltage of the primary power system to 57V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1 = 0.5kW, the input power of the photovoltaic subsystem P2 = 3kW, the energy storage system P3 = 2kW, and the output power of the secondary power system P4 = 4.8kW. The overall efficiency of the system is calculated to be 87.27%. Record Vm = 55V, η max =90.57%.

[0137] At time 11, the centralized control unit sends data to adjust the output voltage of the primary power system to 58V. After the adjustment is completed, each subsystem sends system data to the centralized control unit. According to the data sent by each subsystem, the centralized control unit processes the input power of the primary power system P1 = 0.5kW, the input power of the photovoltaic subsystem P2 = 3kW, the energy storage system P3 = 2.1kW, and the output power of the secondary power system P4 = 4.8kW. The overall efficiency of the system is calculated to be 85.71%. Record Vm = 55V, η max =90.57%.

[0138] At time 11, the output voltage of the primary power system has reached the scan upper limit voltage value Vmax = 58V, and the scan ends. The maximum efficiency recorded is η max =90.57%, corresponding to the primary power system output voltage value of 55V. Adjust the primary power system output voltage to 55V.

[0139] The overall efficiency of the system was 87.27% before adjustment, and 90.57% after adjustment, an increase of 3.3%.

[0140] The data during the scanning process is shown in the following table:

[0141] Table 2 Scanning process data

[0142] Moment 1 Moment 2 Moment 3 Moment 4 Moment 5 Moment 6 Moment 7 Time 8 Time 9 Time 10 Time 11 V1(V) 48 49 50 51 52 53 54 55 56 57 58 P1(kW) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 P2(kW) 3 3 3 3 3 3 3 3 3 3 3 P3(kW) 2.2 2.15 2.13 2.1 2.05 2 1.9 1.8 1.9 2 2.1 P4(kW) 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 η 84.21％ 84.96％ 85.26％ 85.71％ 86.49％ 87.27％ 88.89％ 90.57％ 88.89％ 87.27％ 85.71％ Vm(V) 48 49 50 51 52 53 54 55 55 55 55 ηmax 84.21％ 84.96％ 85.26％ 85.71％ 86.49％ 87.27％ 88.89％ 90.57％ 90.57％ 90.57％ 90.57％

[0143] Through the above-mentioned embodiments of the present invention, the embodiments of the present invention propose a communication base station power supply and backup system. When other power supply systems and energy storage systems are added, the output voltage of the power supply system 1 or the output power of the energy storage system is adjusted to change the working state of each subsystem, so that the entire system works in the optimal energy efficiency state. A communication base station power supply and backup system proposed in the embodiments of the present invention covers multiple inputs such as photovoltaic systems, energy storage systems, and city electricity, and can adjust the overall energy efficiency of the system to reach the optimal efficiency point, improve the system power supply efficiency, and reduce losses.

[0144] Based on the energy efficiency determination methods provided in the above embodiments, based on the same inventive concept, an energy efficiency determination device is also provided in this embodiment, which is used to implement the above embodiments and preferred implementation modes, and will not be repeated hereafter. As used below, the term "module" may be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0145] Fig. 9 1 is a structural block diagram of an energy efficiency determination device provided according to an embodiment of the present invention. The device is applied to a power supply system, the power supply system includes at least two power supply devices, and the device includes:

[0146] A first determination module 90, configured to select a target device from at least two power supply devices and determine a regulation variable corresponding to the target device;

[0147] A second determination module 92, connected to the first determination module 90, for determining a variable interval corresponding to the adjustment variable;

[0148] A third determination module 94, connected to the second determination module 92, is used to set multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determine the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set;

[0149] The search module 96 is connected to the third determination module 96 and is used to search for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to multiple variable values ​​and multiple power supply efficiencies corresponding to the power supply system.

[0150] Optionally, at least two power supply devices include a first power supply, a second power supply and an energy storage device, the first power supply is a primary power supply, the second power supply is a power supply device of a different type from the first power supply, and the power supply system is used to supply power to the power-consuming device, wherein:

[0151] Before the first determining module 90 selects a target device from at least two power supply devices and determines a regulation variable corresponding to the target device, the apparatus further includes:

[0152] A first setting module is used to set the second power supply to supply power to the power-consuming device, wherein the current second input power of the second power supply is the maximum power supply power of the second power supply;

[0153] The fourth determination module is used to use the first power supply to power the electric device when the second input power is less than the total power consumption of the electric device; when the second input power is greater than the total power consumption of the electric device, the energy storage device is in a charging state.

[0154] Optionally, after the energy storage device is in a charging state, the apparatus further comprises:

[0155] The second setting module is used to set the energy storage device to enter a discharge state to supply power to the power-consuming device when it is detected that the current power of the energy storage device is greater than a discharge threshold.

[0156] Optionally, the fourth determination module includes: a determination unit, configured to determine whether the first input power of the first power supply is greater than a first preset value, wherein the first preset value represents a power difference between the second input power and the total power consumption of the electrical device;

[0157] The setting unit is used to set the first power supply to supplement power and set the energy storage device to a discharging state to supply power to the power-consuming device when the first input power is less than a first preset value.

[0158] Optionally, the multiple variable values ​​are obtained by increasing the lower limit of the variable interval according to a preset step size, and the search module 96 is used to perform the following steps:

[0159] When the lower limit value of the variable interval is set to the first output of the target device, the current power supply efficiency value of the power supply system is recorded as the maximum power supply efficiency of the power supply system and the lower limit value is the minimum output value of the target device;

[0160] When the variable value obtained by each increment of the lower limit value is set as the output of the target device, the current power supply efficiency of the power supply system is compared with the maximum power supply efficiency determined last time;

[0161] If the current power supply efficiency is greater than the maximum power supply efficiency determined last time, the current power supply efficiency is updated to the maximum power supply efficiency of the power supply system, and the current output of the target device is updated to the minimum output value of the target device;

[0162] Until the output of the target device reaches the upper limit of the variable interval and the comparison of the maximum power supply efficiency of the upper limit of the variable interval is completed, the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply system is at the maximum power supply efficiency are obtained.

[0163] Optionally, it further includes one of the following: when the target device is a first power supply, the regulated variable is the output voltage of the first power supply; when the target device is an energy storage device, the regulated variable is the output power of the energy storage device.

[0164] Optionally, applied to the first power source, the third determining module 94 includes:

[0165] A first receiving unit, configured to determine a first power value of a first power source by using an input of a target device, and to receive a second power value of a power supply device other than the first power source in the power supply system;

[0166] The first calculation unit is used to calculate the power supply efficiency of the power supply system according to the first power value and the second power value.

[0167] Optionally, after the search module 96 searches for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system, the method further includes:

[0168] A first adjustment unit, used for adjusting the output of the target device to a minimum output value of the target device;

[0169] A first sending unit is used to send a first control signal to a power supply device other than the first power supply among at least two power supply devices, so as to adjust the power supply system to power the power-consuming device when the power supply efficiency is at a maximum value, wherein the first control signal carries a target value of the power supply device other than the first power supply among the at least two power supply devices.

[0170] Optionally, the power supply system further includes a centralized control unit, which is applied to the centralized control unit, and the third determining module 94 includes:

[0171] A second receiving unit, used to receive a third power value of each power supply device;

[0172] The second calculation unit is used to calculate the power supply efficiency of the power supply system according to the multiple third power values.

[0173] Optionally, after the search module 96 searches for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system, the apparatus further includes:

[0174] The second adjusting unit is used to adjust the output of the target device to the minimum output value of the target device, and the second sending unit is used to send a second control signal to each power supply device to adjust the power supply system to power the power consuming device when the power supply efficiency is maximum, wherein the second control signal carries the target value of each power supply device.

[0175] Optionally, the above-mentioned device also includes one of the following: when the target device is a first power supply, the parameter type of the target value carried by the first control signal or the second control signal is voltage; when the target device is an energy storage device, the parameter type of the target value carried by the first control signal or the second control signal is power.

[0176] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are respectively located in multiple processors.

[0177] An embodiment of the present invention further provides a storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0178] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0179] S1, selecting a target device from the at least two power supply devices, and determining a regulation variable corresponding to the target device;

[0180] S2, determining the variable interval corresponding to the adjustment variable;

[0181] S3, setting multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determining the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set;

[0182] S4, searching for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum value according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system.

[0183] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0184] Based on the above Figure 1 The method shown and Fig. 9 In order to achieve the above-mentioned purpose, the embodiment of the present invention also provides an electronic device, such as Fig.10 As shown, the system includes a memory 52 and a processor 51, wherein the memory 52 and the processor 51 are both arranged on a bus 53. The memory 52 stores a computer program, and the processor 51 executes the computer program to realize Figure 1 Energy efficiency determination method shown.

[0185] Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a memory (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling an electronic device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various implementation scenarios of the present invention.

[0186] Optionally, the device may also be connected to a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a Bluetooth interface, a WI-FI interface), etc.

[0187] Those skilled in the art will appreciate that the structure of an electronic device provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different component arrangements.

[0188] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0189] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0190] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for determining energy efficiency, characterized in that: Applied to a power supply system, the power supply system includes at least two power supply devices, and the method includes: Selecting a target device from the at least two power supply devices, and determining a regulation variable corresponding to the target device; Determining a variable interval corresponding to the adjustment variable; Setting multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determining the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set; According to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system, searching for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum; The at least two power supply devices include at least a first power supply, a second power supply and an energy storage device, the first power supply is a primary power supply and the first power supply and the second power supply are power supply devices of different types, and when the target device is an energy storage device, the adjustment variable is the output power of the energy storage device.

2. The method according to claim 1, characterized in that The power supply system is used to supply power to electrical equipment, wherein: Before selecting a target device from the at least two power supply devices and determining a regulation variable corresponding to the target device, the method further includes: Setting the second power supply to supply power to the power-consuming device, wherein the current second input power of the second power supply is the maximum power supply power of the second power supply; When the second input power is less than the total power consumption of the electric device, the first power supply is used to power the electric device; when the second input power is greater than the total power consumption of the electric device, the energy storage device is in a charging state.

3. The method according to claim 2, characterized in that After the energy storage device is in a charging state, the method further includes: When it is detected that the current power of the energy storage device is greater than a discharge threshold, the energy storage device is set to enter a discharge state to supply power to the power-consuming device.

4. The method according to claim 2, characterized in that: The using the first power supply to supply power to the power-consuming device comprises: Determine whether a first input power of the first power supply is greater than a first preset value, wherein the first preset value represents a power difference between the second input power and a total power consumption of the power-consuming device; When the first input power is less than a first preset value, the first power supply is set to perform power supplementation and the energy storage device is set to be in a discharging state to supply power to the electrical device.

5. The method according to claim 2, characterized in that: The multiple variable values ​​are obtained by increasing the lower limit value of the variable interval according to a preset step size, wherein the searching for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum value according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system includes: When the lower limit value of the variable interval is set to the first output of the target device, the current power supply efficiency value of the power supply system is recorded as the maximum power supply efficiency of the power supply system and the lower limit value is the minimum output value of the target device; When the variable value obtained by each increment of the lower limit value is set as the output of the target device, comparing the current power supply efficiency of the power supply system with the maximum power supply efficiency determined last time; If the current power supply efficiency is greater than the maximum power supply efficiency determined last time, updating the current power supply efficiency to the maximum power supply efficiency of the power supply system, and updating the current output of the target device to the minimum output value of the target device; Until the output of the target device reaches the upper limit of the variable interval and the comparison of the maximum power supply efficiency of the upper limit of the variable interval is completed, the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply system is at the maximum power supply efficiency are obtained.

6. The method according to claim 2, characterized in that The method further comprises: When the target device is the first power supply, the regulation variable is the output voltage of the first power supply.

7. The method according to any one of claims 2 to 6, characterized in that: Applied to the first power supply, the determining the power supply efficiency of the power supply system according to the power value of each power supply device includes: Determine a first power value of the first power source using an input of the target device, and receive a second power value of a power supply device other than the first power source in the power supply system; The power supply efficiency of the power supply system is calculated according to the first power value and the second power value.

8. The method according to claim 7, characterized in that After searching for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system, the method further includes: Adjusting the output of the target device to be the minimum output value of the target device when the power supply system has the maximum power supply efficiency; A first control signal is sent to a power supply device other than the first power supply among the at least two power supply devices to adjust the power supply system to power the power-consuming device when the power supply efficiency is at a maximum value, wherein the first control signal carries a target value for the power supply device other than the first power supply among the at least two power supply devices.

9. The method according to any one of claims 2 to 6, characterized in that: The power supply system further includes a centralized control unit, which is applied to the centralized control unit, wherein determining the power supply efficiency of the power supply system according to the power value of each power supply device includes: receiving a third power value of each power supply device; The power supply efficiency of the power supply system is calculated according to the plurality of third power values.

10. The method according to claim 9, characterized in that After searching for the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system, the method further includes: Adjusting the output of the target device to a minimum output value of the target device when the power supply system has the maximum power supply efficiency; A second control signal is sent to each power supply device to adjust the power supply system to supply power to the power-consuming device when the power supply efficiency is at a maximum value, wherein the second control signal carries a target value of each power supply device.

11. The method according to claim 8 or 10, characterized in that: The method further comprises one of the following: When the target device is the first power supply, the parameter type of the target value carried by the first control signal or the second control signal is voltage; When the target device is the energy storage device, the parameter type of the target value carried by the first control signal or the second control signal is power.

12. An energy efficiency determination device, characterized in that: Applied to a power supply system, the power supply system includes at least two power supply devices, and the device includes: A first determination module, configured to select a target device from the at least two power supply devices and determine a regulation variable corresponding to the target device; A second determination module is used to determine the variable interval corresponding to the adjustment variable; A third determination module is used to set multiple variable values ​​in the variable interval as outputs of the target device in sequence, and determine the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set; A search module, used for searching the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system; The at least two power supply devices include at least a first power supply, a second power supply and an energy storage device, the first power supply is a primary power supply and the first power supply and the second power supply are power supply devices of different types, and when the target device is an energy storage device, the adjustment variable is the output power of the energy storage device.

13. A power supply system, characterized in that: The power supply system includes at least two power supply devices, the at least two power supply devices include a first power supply, a second power supply and an energy storage device, the first power supply is a primary power supply, the second power supply is a power supply device of a different type from the first power supply, and the power supply system is used to supply power to the power-consuming device; wherein, The first power supply is used to select a target device from the at least two power supply devices, and determine a regulating variable corresponding to the target device; determine a variable interval corresponding to the regulating variable; set multiple variable values ​​in the variable interval in sequence as outputs of the target device, and determine the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set; find the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system; When the target device is an energy storage device, the adjustment variable is the output power of the energy storage device.

14. A power supply system, characterized in that: The power supply system includes at least two power supply devices and a centralized control unit, wherein the at least two power supply devices include a first power supply, a second power supply and an energy storage device, wherein the first power supply is a primary power supply, and the second power supply is a power supply device of a different type from the first power supply, and the power supply system is used to supply power to the power-consuming device; wherein, The centralized control unit is used to select a target device from the at least two power supply devices, and determine a regulating variable corresponding to the target device; determine a variable interval corresponding to the regulating variable; set multiple variable values ​​in the variable interval in sequence as outputs of the target device, and determine the power supply efficiency of the power supply system according to the power values ​​of each power supply device each time the output of the target device is set; and find the maximum power supply efficiency of the power supply system and the minimum output value of the target device when the power supply efficiency is the maximum according to the multiple variable values ​​and the multiple power supply efficiencies corresponding to the power supply system; When the target device is an energy storage device, the adjustment variable is the output power of the energy storage device.

15. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 11 are implemented.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 1 to 11 are implemented.

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