Converging device and data processing method of converging device

Abstract

The application discloses a current collecting device and a data processing method of the current collecting device, and belongs to the technical field of voltage sampling. The current collecting device comprises a plurality of terminals, at least part of which is used for being connected with a three-phase power supply system; the plurality of terminals comprise a terminal connected with a phase line and a terminal connected with a neutral line; wherein one end of a line is connected with a target interface of the three-phase power supply system, the other end of the line is connected with the terminal connected with the neutral line, and the target interface is determined based on a wiring mode of the three-phase power supply system; wherein the wiring mode comprises leading out a neutral line or not leading out the neutral line. The current collecting device disclosed by the application reduces the system deployment and maintenance cost, and improves the universality and flexibility of the device.

Description

Technical Field

[0001] This application belongs to the field of voltage sampling technology, and in particular relates to a busbar device and a data processing method for the busbar device. Background Technology

[0002] In related technologies, the circuit board of a busbar device typically has four voltage sampling terminals: L1, L2, L3, and N. It is connected to a three-phase four-wire system by default, and its control logic is calculated based on the phase voltage. However, some power distribution scenarios use a three-phase three-wire system without a neutral line, making it difficult to directly adapt the busbar device with the above structure. Therefore, it is often necessary to design and configure different specifications of busbar device circuit boards for different wiring methods, thereby increasing the hardware design, production, and application costs. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a combiner device and a data processing method for the combiner device, which reduces system deployment and maintenance costs and improves the versatility and flexibility of the device.

[0004] In a first aspect, this application provides a combiner device, which includes: Multiple terminals, at least some of which are used for connection to a three-phase power supply system; the multiple terminals include terminals connected to phase lines and terminals connected to neutral lines; in, One end of the line is connected to the target interface of the three-phase power supply system, and the other end of the line is connected to the terminal connected to the neutral line. The target interface is determined based on the wiring method of the three-phase power supply system. The wiring method includes: leading out the neutral line or not leading out the neutral line.

[0005] According to the combiner device of this application, by setting a selectively adjustable sampling connection method on the single board of the combiner device, the combiner device can be compatible with both three-phase four-wire and three-phase three-wire connection methods of the power supply system by adjusting the connection method of the sampling line without changing the hardware interface of the combiner device. This reduces the configuration complexity, lowers the system deployment and maintenance costs, and improves the versatility and flexibility of the device.

[0006] According to one embodiment of this application, the target interface is determined based on the wiring method of the three-phase power supply system, including: When the wiring method is to lead out the neutral line, the target interface is the neutral point output port of the three-phase power supply system.

[0007] According to one embodiment of this application, the target interface is determined based on the wiring method of the three-phase power supply system, including: When the wiring method is such that the neutral line is not brought out, the target interface is the phase line terminal output port of the three-phase power supply system.

[0008] According to one embodiment of this application, a portion of the remaining terminals among the plurality of terminals are used for connection to a load. The wiring method of the remaining terminals and the load is determined based on the load phase type, which includes at least one of single-phase load or three-phase load.

[0009] According to one embodiment of this application, when the load phase type is a three-phase load, the remaining terminals are connected to the corresponding terminals of the three-phase load; When the load phase type is a single-phase load, at least two of the remaining terminals are connected to the terminals of the single-phase load.

[0010] According to one embodiment of this application, the at least some terminals are used for connection to a three-phase power supply system, including: When the wiring method is to lead out the neutral line, the first phase line, the second phase line, the third phase line and the neutral line of the three-phase power supply system are respectively connected to the first phase line access terminal, the second phase line access terminal, the third phase line access terminal and the neutral line access terminal of the plurality of terminals; When the wiring method is that the neutral line is not brought out, any one of the first phase line, the second phase line, and the third phase line of the three-phase power supply system is connected to the neutral line access terminal among the plurality of terminals, and the remaining phase lines are respectively connected to the access terminals among the plurality of terminals.

[0011] Secondly, this application provides a data processing method for a combiner device, the method comprising: Acquire the voltage signal collected by the combiner device; Based on the voltage signal, the voltage reference signal of the three-phase power supply system is obtained.

[0012] According to the data processing method of the combiner device in this application, by setting a selectively adjustable sampling connection method on the single board of the combiner device, the combiner device can be compatible with both three-phase four-wire and three-phase three-wire connection methods of the power supply system by adjusting the connection method of the sampling line without changing the hardware interface of the combiner device. This reduces the configuration complexity, lowers the system deployment and maintenance costs, and improves the versatility and flexibility of the device.

[0013] According to one embodiment of this application, obtaining the voltage reference signal of the three-phase power supply system based on the voltage signal includes: When the wiring method is to lead out the neutral line, the voltage signal is the phase voltage of each phase line; Based on the phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

[0014] According to one embodiment of this application, obtaining the voltage reference signal of the three-phase power supply system based on the voltage signal includes: When the wiring method is such that the neutral line is not brought out, the virtual phase voltage of each phase line is determined based on the line voltage of each phase line; Based on the virtual phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

[0015] According to one embodiment of this application, determining the virtual phase voltage of each phase line based on the line voltage of each phase line includes: Based on the line voltage of each phase line collected by the combiner device, a virtual neutral point is constructed and the reference potential corresponding to the virtual neutral point is determined; Based on the line voltage and the reference potential, the virtual phase voltage corresponding to each phase line is obtained.

[0016] Thirdly, this application provides a data processing apparatus for a busbar device, the apparatus comprising: The first module is used to acquire the voltage signal collected by the combiner device; The second module is used to obtain the voltage reference signal of the three-phase power supply system based on the voltage signal.

[0017] According to the data processing device of the combiner device of this application, by setting a selectively adjustable sampling connection method on the single board of the combiner device, the combiner device can be compatible with both three-phase four-wire and three-phase three-wire connection methods of the power supply system by adjusting the connection method of the sampling line without changing the hardware interface of the combiner device. This reduces the configuration complexity, lowers the system deployment and maintenance costs, and improves the versatility and flexibility of the device.

[0018] Fourthly, this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the data processing method of the bus device as described in the second aspect above.

[0019] Fifthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the data processing method of the busbar device as described in the second aspect above.

[0020] In a sixth aspect, this application provides a computer program product, including a computer program that, when executed by a processor, implements the data processing method of the combiner device as described in the second aspect above.

[0021] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects: By setting an adjustable sampling connection method on the single board of the combiner device, the combiner device can be compatible with both three-phase four-wire and three-phase three-wire connection methods of the power supply system without changing the hardware interface of the combiner device. This reduces configuration complexity, lowers system deployment and maintenance costs, and improves the versatility and flexibility of the device.

[0022] Furthermore, with the hardware terminal configuration of the combiner device remaining unchanged, the neutral line terminals can be connected to the corresponding target interfaces based on whether the neutral line is brought out in the three-phase power supply system. This allows for voltage signal acquisition and processing regardless of whether the neutral line is brought out or not. Simultaneously, the combiner device can determine the terminal connection method with the load side based on the number of load phases, ensuring compatibility with different power supply wiring methods and load access forms. This reduces system configuration complexity, lowers system deployment and maintenance costs, and improves the device's versatility and application flexibility.

[0023] Furthermore, by using corresponding voltage values ​​as inputs under different wiring methods, and introducing a virtual neutral point reference when the neutral line is not led out, the conversion from line voltage to equivalent phase voltage is realized. This enables the generation of a unified voltage reference signal under both operating conditions with and without a neutral line. The voltage reference signal is used for subsequent voltage sampling processing and reference quantity output, allowing subsequent processing steps to reuse the same input aperture and parameter configuration under different wiring methods, thereby improving the versatility and flexibility of the equipment.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the connection between the combiner device and the three-phase four-wire power supply system provided in the embodiments of this application; Figure 2 This is one of the connection diagrams of the combiner device and the three-phase three-wire power supply system provided in the embodiments of this application; Figure 3This is the second schematic diagram of the connection between the combiner device and the three-phase three-wire power supply system provided in the embodiments of this application; Figure 4 This is the third schematic diagram of the connection between the combiner device and the three-phase three-wire power supply system provided in the embodiments of this application; Figure 5 This is the third schematic diagram of the connection between the combiner device and the three-phase three-wire power supply system provided in the embodiments of this application; Figure 6 This is a schematic flowchart of the data processing method for the combiner device provided in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the data processing device of the combiner equipment provided in the embodiments of this application; Figure 8 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0027] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] The following description, in conjunction with the accompanying drawings, details the merging device, data processing method of the merging device, data processing apparatus, electronic device, and readable storage medium provided in the embodiments of this application through specific implementations and application scenarios.

[0029] The data processing method of the merging device can be applied to the terminal, and can be executed by the hardware or software in the terminal.

[0030] The terminal includes portable communication devices such as mobile phones or tablets. It should also be understood that, in some embodiments, the terminal may not be a portable communication device, but rather a desktop computer.

[0031] The following embodiments describe a terminal. However, it should be understood that a terminal may include one or more other physical user interface devices such as a physical keyboard, mouse, and joystick.

[0032] The data processing method for a combiner device provided in this application embodiment can be executed by the combiner device itself or by a functional module or entity within the combiner device that can implement the data processing method. The data processing method for a combiner device provided in this application embodiment will be described below using the combiner device as the executing entity as an example.

[0033] During the research and development process, the inventors discovered that in related technologies, the circuit board of a combiner device typically has four voltage sampling terminals: L1, L2, L3, and N. It is connected to a three-phase four-wire system by default, and its control logic is calculated based on the phase voltage. However, some power distribution scenarios use a three-phase three-wire system without a neutral line, making it difficult to directly adapt the above-mentioned combiner device structure. Therefore, it is often necessary to design and configure different specifications of combiner device circuit boards for different wiring methods, thereby increasing the hardware design, production, and application costs.

[0034] In order to make the combiner device compatible with different wiring methods of the inverter, this application provides a combiner device.

[0035] like Figure 1 As shown, the combiner device includes multiple terminals, at least some of which are used for connection to a three-phase power supply system.

[0036] One end of the line is connected to the target interface of the three-phase power supply system, and the other end of the line is connected to the terminal connected to the neutral line.

[0037] In this embodiment, the plurality of terminals include terminals connected to the phase line and terminals connected to the neutral line.

[0038] The target interface is the phase line endpoint output port or neutral point output port of the three-phase power supply system, which is determined based on the wiring method of the three-phase power supply system.

[0039] The line is a line on the three-phase power supply system side, used to connect the phase line terminal output port or neutral point output port of the three-phase power supply system to the phase line terminal and / or neutral line terminal of the combiner device.

[0040] In some embodiments, the line further includes: inverter-side line for connecting the AC output terminal of the inverter to the phase terminal and / or neutral terminal of the combiner device.

[0041] In actual implementation, refer to Figure 1The combiner device is located between the three-phase power supply system and the inverter (INV). The combiner device includes a control board and four terminals located on the control board. The four terminals are used for the three-phase power supply system and the inverter; the four terminals are the first phase terminal L1, the second phase terminal L2, the third phase terminal L3, and the neutral terminal N (hereinafter referred to as terminals L1, L2, L3, and N).

[0042] Continue to refer to Figure 1 The three-phase power supply system is connected to terminals L1, L2, L3, and N of the combiner device via the three-phase power supply system side voltage sampling line (GridVoltSample), including: the first phase line GRID_L1, the second phase line GRID_L2, the third phase line GRID_L3, and the neutral line GRID_N. Terminals L1, L2, L3, and N of the combiner device are connected to the AC output terminals of the inverter via the inverter side line (InvVoltSample), including: the inverter side first phase line line INV_L1, the inverter side second phase line line INV_L2, the inverter side third phase line line INV_L3, and the inverter side neutral line line INV_N.

[0043] According to the embodiments of this application, by setting a selectively adjustable sampling connection method on the single board of the combiner device, the combiner device can be compatible with both three-phase four-wire and three-phase three-wire connection methods of the power supply system by adjusting the connection method of the sampling line without changing the hardware interface of the combiner device. This reduces the configuration complexity, lowers the system deployment and maintenance costs, and improves the versatility and flexibility of the device.

[0044] In some embodiments, the target interface is determined based on the wiring method of the three-phase power supply system.

[0045] In this embodiment, the wiring method includes: leading out a neutral wire or not leading out a neutral wire.

[0046] In some embodiments, the target interface is determined based on the wiring method of the three-phase power supply system, including: When the wiring method is to lead out the neutral line, the target interface is the neutral point output port of the three-phase power supply system.

[0047] In this embodiment, the three-phase power supply system is a three-phase power supply system with a neutral line leading out. That is, in addition to the first phase line, the second phase line and the third phase line, the three-phase power supply system also has a neutral line and forms a neutral point output port.

[0048] The busbar device is equipped with a first phase line terminal, a second phase line terminal, a third phase line terminal, and a neutral line terminal.

[0049] When adapting the wiring method for leading out the neutral line, the first phase line terminal output port, the second phase line terminal output port, the third phase line terminal output port, and the neutral point output port of the three-phase power supply system are respectively connected to the first phase line terminal, the second phase line terminal, the third phase line terminal, and the neutral line terminal of the combiner device.

[0050] In some embodiments, at least some terminals are used for connection to a three-phase power supply system, including: When the wiring method is to lead out the neutral line, the first phase line, second phase line, third phase line and neutral line of the three-phase power supply system are respectively connected to the first phase line access terminal, second phase line access terminal, third phase line access terminal and neutral line access terminal of multiple terminals.

[0051] The following explanation uses a three-phase power supply system with a neutral line as an example.

[0052] In actual implementation, refer to Figure 1 The three-phase power supply system is a three-phase four-wire system with a neutral line. A, B, and C represent the three phase lines, and N represents the neutral point (the point from which the neutral line originates). The lines connecting A, B, and C to N in the diagram represent the electrical connection between the three phase lines and the neutral point. The neutral line originates from the neutral point N. It includes the first phase line A, the second phase line B, the third phase line C, and the neutral line N, which corresponds to the neutral point output port of the three-phase power supply system.

[0053] This combiner device is installed between the three-phase power supply system and the inverter. The combiner device includes a control board and four terminals on the control board: a first phase terminal L1, a second phase terminal L2, a third phase terminal L3, and a neutral terminal N (hereinafter referred to as terminals L1, L2, L3, and N). Each phase and neutral line is connected via its corresponding terminal, and a voltage sampling signal is led out from the terminal.

[0054] Continue to refer to Figure 1 The three-phase power supply system has four power supply line segments: GRID_L1, GRID_L2, GRID_L3, and GRID_N. GRID_L1 is connected to phase A, GRID_L2 to phase B, GRID_L3 to phase C, and GRID_N to the neutral point N (neutral line). GRID_L1, GRID_L2, GRID_L3, and GRID_N are connected to terminals L1, L2, L3, and N of the combiner unit, respectively.

[0055] Continue to refer to Figure 1The combiner unit has four inverter-side lines, labeled as inverter-side first phase line line INV_L1, inverter-side second phase line line INV_L2, inverter-side third phase line line INV_L3, and inverter-side neutral line line INV_N. INV_L1, INV_L2, INV_L3, and INV_N are led out from terminals L1, L2, L3, and N, respectively, and connected to the AC output terminals of the inverter.

[0056] In some embodiments, the target interface is determined based on the wiring method of the three-phase power supply system, including: When the wiring method is such that the neutral line is not brought out, the target interface is the output port of the phase line end of the three-phase power supply system.

[0057] In this embodiment, the three-phase power supply system is a three-phase power supply system without a neutral line.

[0058] The busbar junction device is equipped with a first phase line terminal, a second phase line terminal, a third phase line terminal, and a neutral line terminal. When adapting to a wiring method where the neutral line is not brought out, one phase line terminal is selected from the busbar junction device as a floating terminal. The floating terminal is an open-circuit terminal; in this wiring method, the floating terminal is not electrically connected to any external conductor.

[0059] The output port of the phase line end corresponding to the floating terminal is reconnected to the neutral line terminal, so that the neutral line terminal can be used as a reference terminal to be connected to the output port of any phase line end of the three-phase power supply system under this wiring method.

[0060] It is understood that the suspended terminal can be any one of the first phase line terminal, the second phase line terminal, or the third phase line terminal, and correspondingly, the phase line terminal output port corresponding to the suspended terminal is connected to the neutral line terminal.

[0061] In some embodiments, at least some terminals are used for connection to a three-phase power supply system, including: When the wiring method is that the neutral line is not brought out, any one of the first, second, and third phase lines of the three-phase power supply system is connected to the neutral line access terminal among multiple terminals, and the remaining phase lines are respectively connected to the corresponding access terminals among multiple terminals.

[0062] The following explanation uses a three-phase three-wire power supply system without a neutral wire as an example.

[0063] In actual implementation, refer to Figure 2The combiner device includes four terminals: the first phase terminal L1, the second phase terminal L2, the third phase terminal L3, and the neutral terminal N. The three-phase power supply system is a three-phase three-wire system without a neutral line, consisting only of the first, second, and third phase lines, corresponding to the output ports marked A, B, and C in the diagram. The three-phase power supply system does not have a physical neutral line or a neutral point output port; each phase line forms a corresponding line voltage sampling point relationship.

[0064] Continue to refer to Figure 2 When adapting to the wiring method where the neutral line is not brought out, one phase line terminal of the busbar is selected as a floating terminal. The floating terminal remains open under this wiring method and is not electrically connected to any phase line terminal output port of the three-phase power supply system. At the same time, the phase line terminal output port corresponding to the floating terminal is connected to the neutral line terminal N, so that the neutral line terminal can be connected to any phase line terminal output port of the three-phase power supply system under this wiring method, and serves as a sampling reference connection point.

[0065] When the second phase line terminal L2 is used as a floating terminal, the output port of the second phase line of the three-phase power supply system is no longer connected to the L2 terminal, but to the neutral line terminal N, and is marked as N(L2) in the figure; the output port of the first phase line terminal is connected to the L1 terminal, the output port of the third phase line terminal is connected to the L3 terminal, and the L2 terminal remains open.

[0066] It should be noted that the floating terminal can be any one of L1, L2 or L3; correspondingly, the phase line terminal output port corresponding to the floating terminal is connected to the neutral line terminal. In this wiring configuration, the grid-side sampling circuit no longer acquires the three-phase voltage signals (L1-N, L2-N, L3-N) with the neutral terminal as a reference, but instead acquires the line voltage signals between the phase lines.

[0067] Continue to refer to Figure 2 The grid-side sampling circuit is configured with L2 terminal open and N terminal connected to L2 phase line terminal N (L2). The sampling circuit obtains the line voltage signal of L1-L2 between the first phase line terminal and the neutral line terminal, and obtains the line voltage signal of L3-L2 between the third phase line terminal and the neutral line terminal. The sampling channel corresponding to the open terminal does not introduce an effective voltage signal and is equivalent to zero. The above line voltage signal serves as the input data for subsequent virtual phase voltage calculation.

[0068] In some embodiments, a portion of the remaining terminals among the plurality of terminals are used for connection to a load.

[0069] In this embodiment, the wiring method of some remaining terminals and the load is determined based on the load phase type.

[0070] The load phase type includes at least one of single-phase load or three-phase load.

[0071] In some embodiments, when the load phase type is three-phase load, some of the remaining terminals are connected to the corresponding terminals of the three-phase load.

[0072] In this embodiment, the three-phase load has a first phase line terminal, a second phase line terminal, and a third phase line terminal. Some of the remaining terminals include a first phase line output terminal, a second phase line output terminal, and a third phase line output terminal. The first phase line output terminal, the second phase line output terminal, and the third phase line output terminal are respectively connected to the first phase line terminal, the second phase line terminal, and the third phase line terminal of the three-phase load.

[0073] The following explanation uses a three-phase power supply system without a neutral wire and a load type of three-phase load as an example.

[0074] In actual implementation, refer to Figure 3 The load is a three-phase load (LOAD), where LOAD represents the electrical equipment connected to the output side of the combiner device. The three-phase load has a first phase line terminal, a second phase line terminal, and a third phase line terminal.

[0075] In a three-phase power supply system without a neutral line, the remaining terminals of the combiner device include a first phase line output terminal, a second phase line output terminal, and a third phase line output terminal. The first phase line output terminal, the second phase line output terminal, and the third phase line output terminal are respectively connected to the first phase line terminal, the second phase line terminal, and the third phase line terminal of the three-phase load, so that the three-phase load is connected to the three phase lines L1, L2, and L3 respectively to obtain the line voltage power supply between the phase lines.

[0076] In some embodiments, when the load phase type is a single-phase load, at least two of the remaining terminals are connected to the terminals of the single-phase load.

[0077] In this embodiment, the single-phase load has a pair of load terminals, and at least two of the remaining terminals are respectively connected to the pair of load terminals so that the single-phase load is connected to the line voltage between any two phase lines.

[0078] The following explanation uses a three-phase power supply system without a neutral wire and a load type of single-phase load as an example.

[0079] In actual implementation, refer to Figure 4 The load is a single-phase load (LOAD); a single-phase load has a pair of load terminals (e.g., a first load terminal and a second load terminal).

[0080] In a three-phase power supply system without a neutral line, at least two phase line output terminals from the remaining terminals of the combiner device are selected and connected to a pair of load terminals of a single-phase load, so that the single-phase load is connected to the line voltage between any two phase lines.

[0081] For example, such as Figure 4 As shown, a pair of load terminals of a single-phase load are connected to the first phase line output terminal L1 and the second phase line output terminal L2 respectively, so that the single-phase load is connected to the line voltage of L1-L2; Alternatively, a pair of load terminals can be connected to L2 and L3 or L1 and L3 respectively to access the line voltage between the corresponding phase lines.

[0082] In some embodiments, when the load phase type is single-phase load, a transformer can be connected.

[0083] In actual implementation, refer to Figure 5 The input side of the transformer is connected to the first phase line output terminal L1 and the second phase line output terminal L2 respectively, and the neutral point N is led out from the output side of the transformer. In the pair of load terminals of the single-phase load (LOAD), one end is connected to the neutral point N, and the other end is connected to the first phase line output terminal L1 or the second phase line output terminal L2, so that the single-phase load is connected to the power supply circuit of L1-N or L2-N respectively.

[0084] Continue to refer to Figure 5 The dashed line L2 indicates that when a single-phase load is connected to L1-N, the single-phase load is not connected to the L2 terminal (or when a single-phase load is connected to L2-N, the single-phase load is not connected to the L1 terminal).

[0085] According to the embodiments of this application, the busbar device, with its hardware terminal configuration remaining unchanged, connects the neutral line terminals to the corresponding target interfaces based on whether the neutral line is led out in the three-phase power supply system. This allows for voltage signal acquisition and processing regardless of whether the neutral line is led out or not. Furthermore, the busbar device can determine the terminal connection method with the load side based on the load phase type, ensuring compatibility with different power supply wiring methods and load access forms. This reduces system configuration complexity, lowers system deployment and maintenance costs, and improves the device's versatility and application flexibility.

[0086] This application also provides a data processing method for a combiner device.

[0087] like Figure 6 As shown, the data processing method of the combiner device includes steps 610 and 620.

[0088] Step 610: Acquire the voltage signal collected by the combiner device; In this step, the voltage signal includes phase voltage signal and / or line voltage signal, and the type of voltage signal is determined based on the wiring method of the three-phase power supply system.

[0089] When the wiring method is to lead out the neutral line, the voltage signal is the phase voltage signal, which includes the voltage signal between the phase line terminal and the neutral line terminal.

[0090] When the wiring method is such that the neutral line is not brought out, the voltage signal is the line voltage signal, which includes the voltage signal between the phase line terminals.

[0091] Step 620: Based on the voltage signal, obtain the voltage reference signal of the three-phase power supply system.

[0092] In this step, the voltage reference signal is a reference parameter calculated based on the voltage signal, used to characterize the voltage state of the three-phase power supply system; the voltage reference signal includes at least one of phase angle and / or frequency.

[0093] In actual operation, the voltage reference signal is used for protection criterion calculation and protection action determination, such as for overvoltage or undervoltage criterion calculation; the voltage reference signal is also used for electrical parameter calculation and data transmission, such as for the calculation and transmission of three-phase apparent power, active power and reactive power.

[0094] According to the data processing method of the combiner device provided in the embodiments of this application, by setting a selectively adjustable sampling connection method on the single board of the combiner device, the combiner device can be compatible with both three-phase four-wire and three-phase three-wire connection methods of the power supply system by adjusting the connection method of the sampling line without changing the hardware interface of the combiner device. This reduces the configuration complexity, lowers the system deployment and maintenance costs, and improves the versatility and flexibility of the device.

[0095] In some embodiments, step 620 includes: When the wiring method is to lead out the neutral line, the voltage signal is the phase voltage of each phase line; Based on the phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

[0096] In this embodiment, reference parameters for characterizing the voltage state of a three-phase power supply system can be obtained by synchronously sampling and phase analysis of the phase voltages of each phase line.

[0097] In some embodiments, obtaining a voltage reference signal for a three-phase power supply system based on a voltage signal includes: When the wiring method is that the neutral line is not brought out, the virtual phase voltage of each phase line is determined based on the line voltage of each phase line; Based on the virtual phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

[0098] In this embodiment, the virtual phase voltage is the equivalent phase voltage calculated based on the line voltage, used to characterize the voltage state of each phase line without a neutral line.

[0099] In some embodiments, determining the virtual phase voltage of each phase line based on the line voltage of each phase line includes: Based on the line voltage of each phase line collected by the combiner device, a virtual neutral point is constructed and the reference potential corresponding to the virtual neutral point is determined; Based on the line voltage and reference potential, the virtual phase voltage corresponding to each phase line is obtained.

[0100] In this embodiment, the virtual phase voltage is obtained based on the equivalent conversion of line voltage.

[0101] In actual implementation, refer to Figure 2 , Figure 3 , Figure 4 or Figure 5 In a three-phase power supply system without a neutral line, the second phase terminal L2 is used as a reference terminal for explanation.

[0102] The voltage signal acquired by the combiner device is the line voltage between the phase lines. When the L2 phase line of the three-phase power supply system is used as the reference point, the line voltage acquired by the combiner device includes the line voltage between the first and second phase lines. and the line voltage between the third phase line and the second phase line. .

[0103] Under this reference relationship, the voltage of each phase line relative to the reference point can be expressed as:

[0104] In a three-phase symmetrical system, the phase voltages of each phase line relative to the neutral point satisfy the constraint that the phasor sum is zero, that is: .

[0105] Since no physical neutral point is set in this wiring configuration, the busbar device constructs a virtual neutral point based on the aforementioned line voltage relationships and determines the reference potential corresponding to the virtual neutral point. Let the virtual neutral point be N, and the virtual phase voltages of each phase line relative to the virtual neutral point be as follows: Then the line voltage and the virtual phase voltage satisfy the following relationship: Meanwhile, under the condition of a symmetrical three-phase system, the virtual phase voltage satisfies: .

[0106] Combining the above formulas, we can see that: .

[0107] Based on the above relationship, the reference potential corresponding to the virtual neutral point can be determined. And further obtain the virtual phase voltage corresponding to each phase line, i.e. .

[0108] in addition This can be expressed by the formula:

[0109] According to the data processing method of the busbar device provided in the embodiments of this application, by using the corresponding voltage quantity as input under different wiring methods, and introducing a virtual neutral point reference when no neutral line is led out, the conversion from line voltage to equivalent phase voltage is realized. In this way, a unified voltage reference signal can be generated under both the condition of leading out a neutral line and the condition of not leading out a neutral line. The voltage reference signal is used for subsequent voltage sampling processing and reference quantity output, so that the same input diameter and parameter configuration can be reused in subsequent processing links under different wiring methods, thereby improving the versatility and flexibility of the device.

[0110] The data processing method for a combiner device provided in this application can be executed by a data processing apparatus for the combiner device. This application uses the example of a data processing apparatus for the combiner device executing the data processing method to illustrate the data processing apparatus for the combiner device provided in this application.

[0111] This application also provides a data processing apparatus for a busbar device.

[0112] like Figure 7 As shown, the data processing device of the combiner includes: a first processing module 710 and a second processing module 720.

[0113] The first processing module 710 is used to acquire the voltage signal collected by the combiner device; The second processing module 720 is used to obtain the voltage reference signal of the three-phase power supply system based on the voltage signal.

[0114] According to the data processing device of the combiner device provided in the embodiments of this application, by setting a selectively adjustable sampling connection method on the single board of the combiner device, the combiner device can be compatible with the three-phase four-wire and three-phase three-wire connection methods of the power supply system by adjusting the connection method of the sampling line without changing the hardware interface of the combiner device. This reduces the configuration complexity, lowers the system deployment and maintenance costs, and improves the versatility and flexibility of the device.

[0115] In some embodiments, the second processing module 720 may also be used for: When the wiring method is to lead out the neutral line, the voltage signal is the phase voltage of each phase line; Based on the phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

[0116] In some embodiments, the second processing module 720 may also be used for: When the wiring method is that the neutral line is not brought out, the virtual phase voltage of each phase line is determined based on the line voltage of each phase line; Based on the virtual phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

[0117] In some embodiments, the second processing module 720 may also be used for: Based on the line voltage of each phase line collected by the combiner device, a virtual neutral point is constructed and the reference potential corresponding to the virtual neutral point is determined; Based on the line voltage and reference potential, the virtual phase voltage corresponding to each phase line is obtained.

[0118] The data processing device of the convergence device in this application embodiment can be an electronic device or a component of an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, handheld computer, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM or self-service machine, etc. The embodiments of this application do not specifically limit it.

[0119] The data processing device of the combiner device in this application embodiment can be a device with an operating system. The operating system can be Android, iOS, or other possible operating systems, and this application embodiment does not specifically limit it.

[0120] The data processing device for the merging equipment provided in this application embodiment can achieve... Figures 1 to 6 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0121] In some embodiments, such as Figure 7 As shown, this application embodiment also provides an electronic device 700, including a processor 701, a memory 702, and a computer program stored in the memory 702 and executable on the processor 701. When the program is executed by the processor 701, it implements the various processes of the above-described data processing method embodiment of the convergence device and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0122] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0123] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described data processing method embodiments of the convergence device and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0124] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0125] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the data processing method of the above-described busbar device.

[0126] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0127] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described data processing method embodiment of the combiner device, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0128] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0129] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0130] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0131] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0132] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0133] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A combiner device, characterized in that, include: Multiple terminals, at least some of which are used for connection to a three-phase power supply system; the multiple terminals include terminals connected to phase lines and terminals connected to neutral lines; in, One end of the line is connected to the target interface of the three-phase power supply system, and the other end of the line is connected to the terminal connected to the neutral line. The target interface is determined based on the wiring method of the three-phase power supply system. The wiring method includes: leading out the neutral line or not leading out the neutral line.

2. The combiner device according to claim 1, characterized in that, The target interface is determined based on the wiring method of the three-phase power supply system, including: When the wiring method is to lead out the neutral line, the target interface is the neutral point output port of the three-phase power supply system.

3. The combiner device according to claim 1, characterized in that, The target interface is determined based on the wiring method of the three-phase power supply system, including: When the wiring method is such that the neutral line is not brought out, the target interface is the phase line terminal output port of the three-phase power supply system.

4. The combiner device according to any one of claims 1-3, characterized in that, Some of the remaining terminals among the plurality of terminals are used to connect to the load. The wiring method of the remaining terminals and the load is determined based on the load phase type, which includes at least one of single-phase load or three-phase load.

5. The combiner device according to claim 4, characterized in that, When the load phase type is a three-phase load, the remaining terminals are connected to the corresponding terminals of the three-phase load. When the load phase type is a single-phase load, at least two of the remaining terminals are connected to the terminals of the single-phase load.

6. The combiner device according to any one of claims 1-3, characterized in that, The at least some terminals are used for connection to a three-phase power supply system, including: When the wiring method is to lead out the neutral line, the first phase line, the second phase line, the third phase line and the neutral line of the three-phase power supply system are respectively connected to the first phase line access terminal, the second phase line access terminal, the third phase line access terminal and the neutral line access terminal of the plurality of terminals; When the wiring method is that the neutral line is not brought out, any one of the first phase line, the second phase line, and the third phase line of the three-phase power supply system is connected to the neutral line access terminal among the plurality of terminals, and the remaining phase lines are respectively connected to the access terminals among the plurality of terminals.

7. A data processing method based on a combiner device as described in any one of claims 1-6, characterized in that, include: Acquire the voltage signal collected by the combiner device; Based on the voltage signal, the voltage reference signal of the three-phase power supply system is obtained.

8. The data processing method for the combiner device according to claim 7, characterized in that, The step of obtaining the voltage reference signal of the three-phase power supply system based on the voltage signal includes: When the wiring method is to lead out the neutral line, the voltage signal is the phase voltage of each phase line; Based on the phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

9. The data processing method for the combiner device according to claim 7, characterized in that, The step of obtaining the voltage reference signal of the three-phase power supply system based on the voltage signal includes: When the wiring method is such that the neutral line is not brought out, the virtual phase voltage of each phase line is determined based on the line voltage of each phase line; Based on the virtual phase voltage of each phase line, the voltage reference signal of the three-phase power supply system is obtained.

10. The data processing method for the combiner device according to claim 9, characterized in that, The determination of the virtual phase voltage of each phase line based on the line voltage of each phase line includes: Based on the line voltage of each phase line collected by the combiner device, a virtual neutral point is constructed and the reference potential corresponding to the virtual neutral point is determined; Based on the line voltage and the reference potential, the virtual phase voltage corresponding to each phase line is obtained.

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