Regulating device, method and electronic device for a carrier cable voltage regulating transformer

Abstract

The application discloses a kind of based on carrier cable's regulating device, method and electronic equipment of voltage regulating transformer, and the application belongs to the technical field of electric power equipment.It includes: remote control module, for receiving the control signal issued to voltage regulating transformer;First modulation and demodulation module, for modulating control signal into first transmission signal according to the preset frequency range of power line carrier;Second modulation and demodulation module, for receiving first transmission signal and demodulating into control signal;Receiving module, for receiving control signal;Execution module, for identifying the control content of control signal, and adjusting the output voltage of on-load voltage regulating transformer;Execution feedback module, for feeding back the output voltage regulation result of on-load voltage regulating transformer.The technical scheme can remotely realize manual adjustment function, improve the safety of staff.The output voltage of transformer can be obtained in real time, to adjust output voltage scheme in real time, improve the flexibility and regulation efficiency of regulated voltage.

Description

Technical Field

[0001] This application belongs to the field of power equipment technology, and specifically relates to a regulating device, method and electronic equipment for a voltage regulating transformer based on a carrier cable. Background Technology

[0002] With the development of urban construction and the improvement of living facilities in my country, transformers are widely used in industry, agriculture, transportation, and urban communities. Transformers are divided into two types: no-load tap-changing transformers and on-load tap-changing transformers. The difference is that no-load tap-changing switches do not have the ability to switch taps under load; tap changing requires de-energizing the transformer, and can only be done 1-2 times a year. On-load tap-changing transformers have dedicated tap changers, allowing voltage adjustment by changing the tap position without de-energizing (while under load). Their voltage adjustment range is larger, generally above 15% and even reaching 30%, and can be adjusted several times a day according to load changes, with automatic adjustment capabilities.

[0003] On-load tap-changing transformers can be adjusted automatically or manually. Before manual adjustment, the automatic control power supply must be disconnected, and then the tap is adjusted using the handle. The desired tap is adjusted according to the number of turns of the handle and the position indicated by the tap changer. Because the transformer is typically located high on the transformer frame, manual adjustment poses significant safety hazards, so this method is rarely used.

[0004] When an on-load tap-changing transformer is in automatic regulation mode, the load voltage characteristics allow the system to maintain stable operation at a lower voltage when there is a reactive power deficit. However, if the reactive power deficit is significant, the on-load tap-changing transformer will activate to maintain the voltage level, causing a temporary voltage rise and transferring the entire reactive power deficit to the main grid. This leads to a gradual decrease in the main grid voltage, potentially causing system voltage collapse in severe cases. Therefore, automatic regulation cannot be relied upon entirely, and manual regulation is necessary when required. However, manual regulation presents significant safety hazards and may result in reduced regulation efficiency due to the distance between the maintenance station and the target transformer line. Therefore, how to achieve real-time remote regulation of the on-load tap-changing transformer voltage, improve regulation efficiency, and reduce safety hazards is a pressing issue in this field. Summary of the Invention

[0005] This application provides a regulating device, method, and electronic device for a voltage-regulating transformer based on a carrier cable, aiming to solve the problem of manual regulation being rendered unusable due to significant safety hazards in existing technologies. By setting up a regulating device for a voltage-regulating transformer based on a carrier cable, the manual regulation function can be remotely realized, improving the safety of operators. Simultaneously, the transformer output voltage can be obtained in real time, allowing operators to adjust the output voltage scheme of the on-load tap-changing transformer in real time, improving the flexibility and efficiency of voltage regulation for on-load tap-changing transformers.

[0006] In a first aspect, embodiments of this application provide a regulating device for a voltage-regulating transformer based on a carrier cable, the device comprising:

[0007] The remote control module is used to receive control signals sent to the voltage regulating transformer;

[0008] The first modulation and demodulation module is used to modulate the control signal into a first transmission signal according to a preset frequency range of the power line carrier.

[0009] The second modulation and demodulation module is connected to the first modulation and demodulation module via a power line. It is used to receive the first transmitted signal and demodulate the first transmitted signal to obtain a control signal.

[0010] A receiving module, located in an on-load tap-changing transformer and connected to the second modulation and demodulation module, is used to receive the control signal;

[0011] An execution module, located in the on-load tap-changing transformer, is used to identify the control content of the control signal and adjust the output voltage of the on-load tap-changing transformer based on the control content.

[0012] The execution feedback module is used to provide feedback on the output voltage regulation results of the on-load tap-changing transformer.

[0013] Furthermore, the remote control module is also used to generate status viewing instructions for the on-load tap-changing transformer;

[0014] The first modulation and demodulation module is used to modulate the status viewing command into a second transmission signal according to the frequency range of the power line carrier.

[0015] The second modulation and demodulation module is used to receive the second transmitted signal and demodulate the second transmitted signal to obtain a status viewing instruction;

[0016] A receiving module, located in an on-load tap-changing transformer and connected to the second modulation and demodulation module, is used to receive the status viewing command.

[0017] An execution module, located in the on-load tap-changing transformer, is used to acquire the operating status of the on-load tap-changing transformer; wherein the operating status includes automatic adjustment status and manual adjustment status;

[0018] The execution feedback module is used to monitor the current operating status of the on-load tap-changing transformer.

[0019] The remote control module is used to receive the feedback status information and switch the working state of the on-load tap-changing transformer to manual adjustment state through the first modulation and demodulation module.

[0020] Furthermore, the execution module is configured to, after switching the operating state of the on-load tap-changing transformer to the manual adjustment state, if an automatic adjustment trigger event is detected, switch the operating state of the on-load tap-changing transformer to the automatic adjustment state, and feed back the switching information to the remote control module through the second modulation and demodulation module.

[0021] Furthermore, the first modulation and demodulation module is used to modulate the control signal into a first transmission signal according to a first frequency range of the power line carrier.

[0022] The second modulation and demodulation module is connected to the first modulation and demodulation module via a power line, and is used to receive the first transmitted signal and demodulate the first transmitted signal using a demodulation mechanism corresponding to the first frequency range to obtain a control signal; and to modulate the output voltage adjustment result into a first feedback signal according to the second frequency range of the power line carrier.

[0023] The first modulation and demodulation module is further configured to demodulate the first feedback signal using a demodulation mechanism corresponding to the second frequency range to obtain the output voltage regulation result.

[0024] Furthermore, the first frequency range is higher than the second frequency range, and the first frequency range and the second frequency range do not overlap.

[0025] Secondly, embodiments of this application provide a method for regulating a voltage-regulating transformer based on a carrier cable, the method comprising:

[0026] The remote control module receives control signals from the voltage regulating transformer.

[0027] The control signal is modulated into a first transmission signal according to a preset frequency range of the power line carrier by the first modulation and demodulation module.

[0028] The first transmitted signal is received by the second modulation and demodulation module, and the first transmitted signal is demodulated to obtain the control signal; wherein the second modulation and demodulation module is connected to the first modulation and demodulation module via a power line;

[0029] The control signal is received by a receiving module; wherein the receiving module is disposed in an on-load tap-changing transformer and is connected to the second modulation and demodulation module;

[0030] The execution module identifies the control content of the control signal and adjusts the output voltage of the on-load tap-changing transformer based on the control content; wherein, the execution module is disposed in the on-load tap-changing transformer;

[0031] The output voltage regulation result of the on-load tap-changing transformer is fed back through the feedback module.

[0032] Furthermore, before receiving the control signal from the voltage regulating transformer via the remote control module, the method further includes:

[0033] The remote control module generates a status viewing command for the on-load tap-changing transformer.

[0034] The status viewing command is modulated into a second transmission signal according to the frequency range of the power line carrier by the first modulation and demodulation module.

[0035] The second transmission signal is received by the second modulation and demodulation module, and the second transmission signal is demodulated to obtain the status viewing instruction;

[0036] The status viewing command is received through a receiving module; wherein, the receiving module is disposed in an on-load tap-changing transformer and connected to the second modulation and demodulation module;

[0037] The operating status of the on-load tap-changing transformer is obtained through an execution module; wherein, the operating status includes automatic adjustment status and manual adjustment status; the execution module is installed in the on-load tap-changing transformer;

[0038] The current operating status of the on-load tap-changing transformer is determined by the execution feedback module.

[0039] The remote control module receives the feedback status information and switches the operating state of the on-load tap-changing transformer to manual adjustment state through the first modulation and demodulation module.

[0040] Furthermore, after switching the operating state of the on-load tap-changing transformer to manual adjustment state, the method further includes:

[0041] If an automatic adjustment trigger event is detected, the operating state of the on-load tap-changing transformer is switched to the automatic adjustment state, and the switching information is fed back to the remote control module through the second modulation and demodulation module.

[0042] Furthermore, the control signal is modulated into a first transmission signal according to a preset frequency range of the power line carrier by the first modulation and demodulation module, including:

[0043] The first modulation and demodulation module modulates the control signal into a first transmission signal according to the first frequency range of the power line carrier.

[0044] The first transmitted signal is received by the second modulation and demodulation module, and the first transmitted signal is demodulated to obtain a control signal, including:

[0045] The first transmitted signal is received by the second modulation and demodulation module, and the first transmitted signal is demodulated by a demodulation mechanism corresponding to the first frequency range to obtain a control signal.

[0046] Accordingly, the method further includes:

[0047] The output voltage regulation result is modulated into a first feedback signal according to the second frequency range of the power line carrier by the second modulation and demodulation module.

[0048] The first modulation and demodulation module demodulates the first feedback signal using a demodulation mechanism corresponding to the second frequency range to obtain the output voltage regulation result.

[0049] Thirdly, embodiments of this application provide an electronic device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0050] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0051] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0052] In this embodiment, a remote control module is used to receive control signals sent to the on-load tap-changing transformer; a first modulation and demodulation module is used to modulate the control signals into a first transmission signal according to a preset frequency range of the power line carrier; a second modulation and demodulation module, connected to the first modulation and demodulation module via a power line, is used to receive the first transmission signal and demodulate the first transmission signal to obtain the control signal; a receiving module, disposed in the on-load tap-changing transformer and connected to the second modulation and demodulation module, is used to receive the control signal; an execution module, disposed in the on-load tap-changing transformer, is used to identify the control content of the control signal and adjust the output voltage of the on-load tap-changing transformer based on the control content; and an execution feedback module is used to provide feedback on the output voltage adjustment result of the on-load tap-changing transformer. Through the above-described adjustment device for the on-load tap-changing transformer based on a carrier cable, remote manual adjustment can be achieved, improving the safety of personnel. Simultaneously, the transformer output voltage can be obtained in real time, allowing personnel to adjust the output voltage scheme of the on-load tap-changing transformer in real time, improving the flexibility and efficiency of on-load tap-changing transformer voltage adjustment. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the regulating device of the voltage regulating transformer based on the carrier cable provided in Embodiment 1 of this application;

[0054] Figure 2 This is a schematic diagram of the regulating device of the voltage regulating transformer based on the carrier cable provided in Embodiment 2 of this application;

[0055] Figure 3 This is a schematic diagram of the regulating device of the voltage regulating transformer based on the carrier cable provided in Embodiment 3 of this application;

[0056] Figure 4 This is a schematic flowchart of the adjustment method of the voltage regulating transformer based on the carrier cable provided in Embodiment 4 of this application;

[0057] Figure 5 This is a schematic diagram of the structure of the electronic device provided in Embodiment 5 of this application. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. It should also be noted that, for ease of description, only the parts relevant to this application are shown in the drawings, not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0059] 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.

[0060] 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.

[0061] The adjustment device, method, and electronic equipment of the voltage regulating transformer based on carrier cable provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0062] Example 1

[0063] Figure 1 This is a schematic diagram of the regulating device for a voltage regulating transformer based on a carrier cable, provided in Embodiment 1 of this application. Figure 1 As shown, it specifically includes the following:

[0064] Remote control module 101 is used to receive control signals sent to the voltage regulating transformer;

[0065] The first modulation and demodulation module 102 is used to modulate the control signal into a first transmission signal according to a preset frequency range of the power line carrier.

[0066] The second modulation and demodulation module 103 is connected to the first modulation and demodulation module via a power line and is used to receive the first transmitted signal and demodulate the first transmitted signal to obtain a control signal.

[0067] The receiving module 104 is disposed in the on-load tap-changing transformer and connected to the second modulation and demodulation module for receiving the control signal;

[0068] An execution module 105 is disposed in the on-load tap-changing transformer and is used to identify the control content of the control signal and adjust the output voltage of the on-load tap-changing transformer based on the control content.

[0069] The execution feedback module 106 is used to provide feedback on the output voltage regulation result of the on-load tap-changing transformer.

[0070] Firstly, this solution can be implemented in scenarios where an on-load tap-changing transformer (OTCT) is used to regulate voltage. Specifically, the regulation of the OCT can be jointly executed by a control terminal and the transformer's regulating device. The control terminal can send control signals to the OCT, such as increasing or decreasing the voltage, and specifying the adjustment. The regulating device receives the control signals from the control terminal, modulates them, and sends them back to the OCT, essentially acting as a data transmission device between the control terminal and the OCT. The control terminal can be a smart device, such as a desktop computer, laptop, mobile phone, or tablet, or it can be an Internet of Things (IoT) system.

[0071] Based on the above usage scenarios, it is understood that the executing entity of this application can be a terminal device that integrates modulation signal function and data transmission function between control terminal and on-load tap-changing transformer, without further limitations here.

[0072] In this scheme, the tap-changing transformer can be a transformer capable of switching tap voltage during load operation, i.e., an on-load tap-changing transformer. Transformers have impedance, which will generate a voltage drop during power transmission, varying with changes in the user-side load. Fluctuations in system voltage combined with changes in user-side load will cause significant voltage variations. Under the premise of achieving local reactive power balance, when the voltage fluctuation exceeds a set value, the on-load tap-changing transformer will activate after a certain delay to adjust the voltage and maintain its stability.

[0073] The control signal can be a signal sent by the control terminal to adjust the output voltage of the on-load tap-changing transformer. It can include control content and signal type. Specifically, the signal type can include manual adjustment signals and automatic adjustment signals. When a manual adjustment signal is detected, only the result of manual adjustment can be received; signals sent by automatic adjustment are blocked, meaning that adjustment results sent via automatic adjustment are invalid. Conversely, when an automatic adjustment signal is detected, only the result of automatic adjustment can be received; signals sent by manual adjustment are blocked, meaning that adjustment results sent via manual adjustment are invalid. The control content can be the specific details of the voltage adjustment by the on-load tap-changing transformer, including the adjustment method and the specific adjustment value. This can be represented as: Adjustment Method: Target Value. For example, if the current output voltage of the transformer is 300V, and you want to increase the output voltage to 500V, the control terminal sends a signal to increase the output voltage along with the specific increase value. The sent data would be: Increase: 500V.

[0074] Receiving control signals from a voltage regulating transformer can be seen as the process by which the regulating device of the voltage regulating transformer receives control signals transmitted from the control terminal. Specifically, this can be achieved through a modulator. A modulator is a device that uses digital signal processing technology to modulate low-frequency digital signals (such as audio, video, and data) onto high-frequency digital signals for signal transmission.

[0075] Power line carrier (PLC) is a technology that uses existing power lines to transmit analog or digital signals at high speed via carrier waves. Its biggest advantage is that it eliminates the need for new network infrastructure; data transmission can be achieved as long as there are power lines. PLAC is a communication method unique to power systems and offers advantages over other wireless technologies, such as high transmission speeds and the elimination of the need for rewiring.

[0076] The preset frequency can be the frequency range used for transmitting control signals via power line carrier communication. Because the power line is equipped with filters, these filters can effectively filter out specific frequencies or frequencies outside of those frequencies in the power line, resulting in a power signal of a specific frequency, or eliminating a power signal of a specific frequency. If the frequency used for transmitting the control signal is the same as the operating frequency of the power line, the filter will filter out the signal at the same frequency, causing the control signal to fail to reach the transformer, thus preventing voltage regulation. For example, if the power line operates at a frequency of 50Hz-100Hz, the power line carrier frequency can be set to 400Hz-500Hz, allowing the control signal from the control terminal to be received by the transformer.

[0077] The first transmitted signal can be a signal whose frequency is modulated by a modulator to make the frequency of the control signal sent by the control terminal fall within a preset frequency range. After successful modulation, the first transmitted signal will be transmitted to the second modulation and demodulation module via the power line.

[0078] Modulation can be the process of changing the frequency of a control signal transmitted from the control terminal to a preset frequency of a power line carrier using a modulator. For example, if the frequency of the control signal transmitted from the control terminal is 60Hz, and the preset frequency of the power line carrier is 400Hz-500Hz, the modulator can change the frequency of this control signal to 420Hz. At this point, the frequency of the control signal is within the preset frequency range of the power line carrier, allowing it to be transmitted to the second modulation and demodulation module.

[0079] Power lines refer to conductors that transmit electrical energy and communication signals. When using power lines to transmit communication signals, they must be used in conjunction with filters, modulators, and demodulators. This is because power lines are not suitable for transmitting high-frequency signals. For high-frequency signals, ordinary conductors generate relatively large distributed capacitance, and parasitic capacitance can significantly alter and distort the signal. Using the original expressions for calculations in subsequent circuits will lead to errors. Power lines are typically fitted with filters to isolate useful signals from unwanted noise, separating a single frequency component from complex frequency components, thus improving the circuit's anti-interference capability and signal-to-noise ratio. Without a modulator, control signals may be filtered out, causing on-load tap changers to be unable to regulate voltage. Demodulators can then restore the signal modulated by the modulator for subsequent signal content identification.

[0080] Connecting the second modem module to the first modem module can be a process of connecting the first and second modem modules via power lines, that is, connecting the modulator and demodulator. After successfully connecting the modulator and demodulator, control signals can be transmitted.

[0081] Receiving the first transmitted signal can be the process by which the second modulation and demodulation module receives the control signal transmitted by the first modulation and demodulation module. Specifically, this can be achieved through a demodulator. A demodulator is a device that uses digital signal processing technology to restore the low-frequency digital signal modulated in a high-frequency digital signal, that is, a device that demodulates the first transmitted signal into a control signal.

[0082] Demodulation can be the process of recovering a message from a modulated signal carrying information. In various information transmission or processing systems, the transmitting end modulates a carrier wave with the message to be transmitted, generating a signal carrying this message. The receiving end must recover the transmitted message to utilize it. The demodulation process generally includes two main steps: first, shifting the spectrum carrying useful information near the carrier wave to the baseband; and then filtering out the baseband signal using appropriate filters to complete the demodulation task. In this scheme, demodulation can be the process of restoring the first transmitted signal modulated by the modulator to a control signal using sine wave demodulation or pulse wave demodulation.

[0083] Connecting the receiving module to the second modem module can be like connecting an on-load tap-changing transformer to a demodulator. After the demodulator restores the control signal, it transmits the control signal to the on-load tap-changing transformer so that the transformer can adjust the voltage accordingly. Receiving the control signal can be the process by which the on-load tap-changing transformer receives the restored control signal from the second modem module.

[0084] The output voltage can be the voltage value supplied by the on-load tap-changing transformer to external equipment. Generally, it is necessary to control the on-load tap-changing transformer to adjust the output voltage of the transformer to approximately equal to the rated voltage of the transformer secondary side.

[0085] Identifying control content can be the process of an execution module reading control content; specifically, it can be done through a chip. Since a control signal includes both the control signal type and the control content, the chip first identifies the control signal type and then reads the corresponding control content. For example, when manually adjusting the output voltage of an on-load tap-changing transformer, the control content is to increase the output voltage to 500V. The chip first reads the control signal type as a manual adjustment signal, and then reads the corresponding control content, which is "increase: 500V". It's important to note that control signals issued through automatic adjustment are considered invalid in this case.

[0086] Regulating the output voltage can be achieved by an on-load tap-changing transformer changing the turns ratio of its primary and secondary coils according to a control signal, thus increasing or decreasing the voltage. An on-load tap-changing transformer consists of a core, a primary coil, and a secondary coil. Current flows into the primary coil and out of the secondary coil. If the primary coil has more turns than the secondary coil, the voltage on the secondary coil decreases; this is the voltage reduction process. Conversely, if the primary coil has fewer turns than the secondary coil, the voltage on the secondary coil increases; this is the voltage increase process.

[0087] The output voltage regulation result can include the regulation status of the on-load tap-changing transformer and the regulated output voltage value. The regulation status can include success or failure, and the output voltage regulation result is expressed as: Regulation Status - Current Voltage. For example, if the on-load tap-changing transformer receives a command to regulate the output voltage to 500V and successfully regulates the voltage to 500V by changing the turns ratio of the secondary and primary coils, then the output voltage regulation result is success: 500V.

[0088] In this embodiment, a remote control module is used to receive control signals sent to a voltage regulating transformer; a first modulation and demodulation module is used to modulate the control signals into a first transmission signal according to a preset frequency range of a power line carrier; a second modulation and demodulation module is connected to the first modulation and demodulation module via a power line, and is used to receive the first transmission signal and demodulate the first transmission signal to obtain the control signal.

[0089] A receiving module, located within the on-load tap-changing transformer and connected to the second modulation / demodulation module, receives the control signal. An execution module, also located within the on-load tap-changing transformer, identifies the control content of the control signal and adjusts the output voltage of the on-load tap-changing transformer based on that content. An execution feedback module provides feedback on the output voltage adjustment result of the on-load tap-changing transformer. This carrier cable-based adjustment device for the tap-changing transformer enables remote manual adjustment, improving worker safety. Simultaneously, the transformer output voltage can be obtained in real-time, allowing workers to adjust the on-load tap-changing transformer's output voltage scheme in real time, thus improving the flexibility and efficiency of on-load tap-changing transformer voltage adjustment.

[0090] Example 2

[0091] Figure 2 This is a schematic diagram of the regulating device for a voltage regulating transformer based on a carrier cable, provided in Embodiment 2 of this application. Figure 2 As shown, it specifically includes the following:

[0092] The remote control module 101 is also used to generate status viewing instructions for the on-load tap-changing transformer;

[0093] The first modulation and demodulation module 102 is used to modulate the status viewing command into a second transmission signal according to the frequency range of the power line carrier.

[0094] The second modulation and demodulation module 103 is used to receive the second transmission signal and demodulate the second transmission signal to obtain a status viewing instruction;

[0095] The receiving module 104 is disposed in the on-load tap-changing transformer and connected to the second modem module, and is used to receive the status viewing command;

[0096] An execution module 105 is installed in the on-load tap-changing transformer and is used to acquire the operating status of the on-load tap-changing transformer; wherein the operating status includes an automatic adjustment status and a manual adjustment status;

[0097] The execution feedback module 106 is used to monitor the current operating status of the on-load tap-changing transformer;

[0098] The remote control module 101 is used to receive the feedback status information and switch the working state of the on-load tap-changing transformer to the manual adjustment state through the execution module.

[0099] In this solution, the status viewing command can be used to view the operating status of the on-load tap-changing transformer. The operating status of the on-load tap-changing transformer is divided into manual adjustment status and automatic adjustment status.

[0100] The generation process can be achieved by sending status monitoring commands from the control terminal. This allows the control terminal to flexibly adjust the operating status of the on-load tap-changing transformer in real time based on its output voltage and current operating status. In emergency situations, operators may need to switch to manual adjustment mode to control the output voltage of the on-load tap-changing transformer. Once the output voltage returns to its stable state after adjustment, it can switch back to automatic adjustment mode. Therefore, it is necessary to obtain the output voltage and operating status of the on-load tap-changing transformer in real time to determine the adjustment plan for its operating status.

[0101] The second transmission signal can be a signal whose frequency is modulated by a modulator so that the final frequency of the status check command is within a preset frequency range. After successful modulation, the first modulation and demodulation module will transmit the second transmission signal to the second modulation and demodulation module via the power line.

[0102] Modulation can be the process of changing the frequency of a status check command to a preset frequency of a power line carrier using a modulator.

[0103] Receiving the second transmitted signal can be the process of the demodulator receiving the second transmitted signal transmitted by the modulator. Demodulation can be the process of using the demodulator to restore the second transmitted signal modulated by the modulator to a status check command using sine wave demodulation or pulse wave demodulation. Receiving the status check command can be the process of the on-load tap-changing transformer receiving the status check command restored by the second modulation and demodulation module.

[0104] The automatic regulation state may refer to a state where the on-load voltage regulating transformer only accepts the next voltage regulation scheme automatically generated by the control terminal based on the current output voltage, and does not accept regulation schemes manually sent by staff via the control terminal. Specifically, a terminal voltage detection device can be arranged and connected to the control terminal. The terminal voltage monitoring device includes a wireless communication module, a processor and a voltage acquisition circuit; the voltage acquisition circuit is configured to acquire voltage data on the incoming line side of the metering instrument, the processor is configured to process the voltage data acquired by the voltage acquisition circuit, and the wireless communication module is configured to send the voltage to the control terminal. The maximum threshold and minimum threshold of voltage can be set in the control terminal in advance. When the voltage detected by the terminal voltage detection device received by the control terminal exceeds the maximum threshold or the minimum threshold, an instruction to reduce or increase the voltage can be automatically issued, so as to achieve the purpose of automatically regulating voltage.

[0105] The manual regulation state may refer to a state where the on-load voltage regulating transformer only accepts control signals manually sent by staff via the control terminal, and shields automatic regulation signals. The automatic regulation mode is suitable for regulation under conventional conditions. Under some complex conditions, staff need to judge the specific voltage regulation mode according to the situation, and at this time the on-load voltage regulating transformer needs to be switched to the manual regulation state.

[0106] Acquisition may refer to the process of identifying the working state of the on-load voltage regulating transformer, specifically, identification can be performed via a sensor. A sensor refers to a measuring device that can convert a measured non-electrical quantity into a corresponding output electrical quantity or electrical parameter that is easy to accurately process according to a certain rule. When the sensor receives a state viewing instruction issued by the control terminal, it performs an operation of querying the working state of the on-load voltage regulating transformer.

[0107] Feedback may refer to the process of transmitting the working state acquired by the sensor to the control terminal, specifically, transmission can be performed via an intelligent gateway. The intelligent gateway is a network device and is the key to the intellectualization of a local area network, through which functions such as information acquisition, information input, information output, remote control and linkage control for devices such as sensors can be realized. The intelligent gateway is connected with the sensor and the control terminal. After the sensor obtains the working state of the on-load voltage regulating transformer, it transmits this data to the intelligent gateway, and the intelligent gateway then forwards this data to the control terminal. This process is the feedback process.

[0108] Receiving may refer to the process in which the control terminal receives the working state of the on-load voltage regulating transformer acquired by the sensor and forwarded via the intelligent gateway.

[0109] Switching may refer to the process in which after the control terminal identifies the received working state of the on-load voltage regulating transformer, if it identifies that the working state is the automatic regulation state, it changes the working state of the on-load voltage regulating transformer to the manual regulation state.

[0110] The technical solution provided in this embodiment, by setting a status viewing command for the on-load tap-changing transformer and adjusting its operating state to manual adjustment, can obtain the real-time operating status of the on-load tap-changing transformer and remotely switch its operating state. This reduces the safety hazards previously required for personnel to operate on the transformer line frame and improves the flexibility and efficiency of adjustment.

[0111] Based on the above technical solution, optionally, the execution module 105 is used to switch the operating state of the on-load tap-changing transformer to the automatic adjustment state after switching the operating state of the on-load tap-changing transformer to the manual adjustment state, and if an automatic adjustment trigger event is detected, switch the operating state of the on-load tap-changing transformer to the automatic adjustment state, and feed back the switching information to the remote control module through the second modulation and demodulation module.

[0112] In this scheme, the automatic adjustment trigger event can be a rule set to determine whether the on-load tap-changing transformer can switch to automatic adjustment mode. Specifically, it can be that the voltage reaches a certain range or the on-load tap-changing transformer is in manual adjustment mode for a certain duration as the automatic adjustment trigger event. For example, if the output voltage of the on-load tap-changing transformer is defined as 300V-480V as the automatic adjustment range, when the voltage is adjusted to 400V using manual adjustment, it is considered that the rule for the automatic adjustment trigger event has been met, and the on-load tap-changing transformer's operating state is switched to automatic adjustment mode. Another rule can be that when the on-load tap-changing transformer is in manual operation mode for a preset duration, it is considered that the rule for the automatic adjustment trigger event has been met, and the on-load tap-changing transformer's operating state is switched to automatic adjustment mode. For example, the preset duration can be set to 40 minutes, meaning that when the on-load tap-changing transformer is in manual adjustment mode for 40 minutes, it is considered that the rule for the automatic adjustment trigger event has been met.

[0113] The switching information can include the operating status after the switch and the switching process, and can be represented as: operating status, switching process. For example, when an on-load tap-changing transformer switches to automatic adjustment mode, the switching information sent to the control terminal is: automatic adjustment status, manual adjustment status - automatic adjustment status.

[0114] Identification can be the process by which a sensor determines whether the conditions for an automatic trigger event have been met. Specifically, it could be the process by which a sensor determines whether the acquired output voltage is within the automatic adjustment range. Alternatively, it could be the process by which a sensor determines whether the duration for which an on-load tap-changing transformer has been in manual adjustment mode exceeds a preset duration.

[0115] The switching process can be as follows: when a sensor detects an automatically triggered event, the data is transmitted to the control terminal via a smart gateway. Upon receiving the data, the control terminal issues a command to switch to automatic regulation mode. The smart gateway then forwards the command to the on-load tap-changing transformer, which then switches to automatic regulation mode. Specifically, the issuance of the command by the control terminal and the execution of the command by the on-load tap-changing transformer can be accomplished by a processor.

[0116] Feedback can be the process by which the sensor transmits the switching information to the control module at the control end through the smart gateway after the on-load tap-changing transformer switches its operating state to automatic adjustment state.

[0117] This solution, by setting up automatic adjustment trigger events, allows on-load tap-changing transformers to flexibly adjust their operating status, saving operators time in adjusting the transformers and improving their voltage regulation efficiency. Without these automatic adjustment trigger events, operators might still need to monitor the voltage after manual adjustment, even though the voltage may have already reached a stable state, thus wasting considerable time.

[0118] Example 3

[0119] Figure 3 This is a schematic diagram of the regulating device for a voltage regulating transformer based on a carrier cable, provided in Embodiment 3 of this application. Figure 3 As shown, it specifically includes the following:

[0120] The first modulation and demodulation module 102 is used to modulate the control signal into a first transmission signal according to a first frequency range of the power line carrier.

[0121] The second modulation and demodulation module 103 is connected to the first modulation and demodulation module via a power line, and is used to receive the first transmitted signal and demodulate the first transmitted signal using a demodulation mechanism corresponding to the first frequency range to obtain a control signal; and to modulate the output voltage adjustment result into a first feedback signal according to the second frequency range of the power line carrier.

[0122] The first modulation and demodulation module 102 is further configured to demodulate the first feedback signal using a demodulation mechanism corresponding to the second frequency range to obtain the output voltage regulation result.

[0123] The first frequency range can be the frequency range used by the control terminal when transmitting control signals, that is, the preset frequency range of the power line carrier.

[0124] The demodulation mechanism corresponding to the first frequency range can be the method used by the demodulator to demodulate the first transmitted signal. Specifically, this method can be sinusoidal wave demodulation or pulse wave demodulation. Sinusoidal wave demodulation can be further divided into amplitude demodulation, frequency demodulation, and phase demodulation. Pulse wave demodulation can also be divided into pulse amplitude demodulation, pulse phase demodulation, pulse width demodulation, and pulse code demodulation, etc. In this scheme, sinusoidal wave amplitude demodulation can be used, which is the process of recovering the message from the amplitude-modulated signal carrying the message.

[0125] The second frequency range can be the frequency range used when the feedback module modulates the output voltage adjustment result. Specifically, it can also be the output voltage result modulated by a modulator. The second frequency range needs to be distinguished from the first frequency range and the operating frequency range of the power line. For example, if the operating frequency of the power line is 50Hz-100Hz and the first frequency range is 400Hz-500Hz, then the second frequency range can be set to 200Hz-300Hz.

[0126] The first feedback signal can be a signal obtained by modulating the output voltage result according to a second frequency range using a modulator. After successful modulation, the first feedback signal will be transmitted to the first modulation and demodulation module for demodulation. Specifically, the first feedback signal can be transmitted to the demodulator through the modulator.

[0127] The demodulation mechanism corresponding to the second frequency range can also be the method used by the demodulator when demodulating the first feedback signal. Specifically, it can also be a sine wave amplitude demodulation method, that is, the process of recovering the message from the amplitude-modulated signal carrying the message.

[0128] Modulating the output voltage regulation result can be a process of using a modulator to convert the output voltage regulation result into a first feedback signal according to a second frequency range. Correspondingly, demodulating the first feedback signal can be a process of using a demodulator to restore the first feedback signal and obtain the output voltage regulation result.

[0129] The technical solution provided in this embodiment, by setting a first frequency range and a second frequency range, distinguishes the frequency used for control signal transmission from the frequency used for output voltage regulation result transmission. This enables the reception of the second transmission signal while transmitting the first feedback signal, and achieves bidirectional communication through different frequency ranges, thereby improving the efficiency of signal transmission and feedback.

[0130] Based on the above technical solution, optionally, the first frequency range is higher than the second frequency range, and the first frequency range and the second frequency range do not overlap.

[0131] The advantage of this scheme is that when the first feedback signal or the second transmission signal is transmitted through the power line, the transmission frequency is different, so it will not be interfered with by the other signal during the transmission process. That is, when the two signals are transmitted at the same time, the transmission speed and transmission quality will not be affected.

[0132] Example 4

[0133] Figure 4 This is a schematic flowchart of the adjustment method for a voltage-regulating transformer based on a carrier cable provided in Embodiment 4 of this application. Figure 4 As shown, the method includes:

[0134] S401 receives control signals from the voltage regulating transformer via a remote control module;

[0135] S402, the control signal is modulated into a first transmission signal according to a preset frequency range of the power line carrier by the first modulation and demodulation module;

[0136] S403, the first transmission signal is received through the second modulation and demodulation module, and the first transmission signal is demodulated to obtain a control signal; wherein, the second modulation and demodulation module is connected to the first modulation and demodulation module through a power line;

[0137] S404, the control signal is received through a receiving module; wherein, the receiving module is disposed in an on-load tap-changing transformer and is connected to the second modulation and demodulation module;

[0138] S405, the execution module identifies the control content of the control signal and adjusts the output voltage of the on-load tap-changing transformer based on the control content; wherein, the execution module is disposed in the on-load tap-changing transformer;

[0139] S406, the output voltage regulation result of the on-load tap-changing transformer is fed back through the feedback module.

[0140] Furthermore, before receiving the control signal from the voltage regulating transformer via the remote control module, the method further includes:

[0141] The remote control module generates a status viewing command for the on-load tap-changing transformer.

[0142] The status viewing command is modulated into a second transmission signal according to the frequency range of the power line carrier by the first modulation and demodulation module.

[0143] The second transmission signal is received by the second modulation and demodulation module, and the second transmission signal is demodulated to obtain the status viewing instruction;

[0144] The status viewing command is received through a receiving module; wherein, the receiving module is disposed in an on-load tap-changing transformer and connected to the second modulation and demodulation module;

[0145] The operating status of the on-load tap-changing transformer is obtained through an execution module; wherein, the operating status includes automatic adjustment status and manual adjustment status; the execution module is installed in the on-load tap-changing transformer;

[0146] The current operating status of the on-load tap-changing transformer is determined by the execution feedback module.

[0147] The remote control module receives the feedback status information and switches the operating state of the on-load tap-changing transformer to manual adjustment state through the first modulation and demodulation module.

[0148] Furthermore, after switching the operating state of the on-load tap-changing transformer to manual adjustment state, the method further includes:

[0149] If an automatic adjustment trigger event is detected, the operating state of the on-load tap-changing transformer is switched to the automatic adjustment state, and the switching information is fed back to the remote control module through the second modulation and demodulation module.

[0150] Furthermore, the control signal is modulated into a first transmission signal according to a preset frequency range of the power line carrier by the first modulation and demodulation module, including:

[0151] The first modulation and demodulation module modulates the control signal into a first transmission signal according to the first frequency range of the power line carrier.

[0152] The first transmitted signal is received by the second modulation and demodulation module, and the first transmitted signal is demodulated to obtain a control signal, including:

[0153] The first transmitted signal is received by the second modulation and demodulation module, and the first transmitted signal is demodulated by a demodulation mechanism corresponding to the first frequency range to obtain a control signal.

[0154] Accordingly, the method further includes:

[0155] The output voltage regulation result is modulated into a first feedback signal according to the second frequency range of the power line carrier by the second modulation and demodulation module.

[0156] The first modulation and demodulation module demodulates the first feedback signal using a demodulation mechanism corresponding to the second frequency range to obtain the output voltage regulation result.

[0157] In this embodiment, a remote control module receives a control signal sent to the on-load tap-changing transformer; a first modulation and demodulation module modulates the control signal into a first transmission signal according to a preset frequency range of a power line carrier; a second modulation and demodulation module receives the first transmission signal and demodulates it to obtain the control signal; wherein the second modulation and demodulation module is connected to the first modulation and demodulation module via a power line; a receiving module receives the control signal; wherein the receiving module is located in the on-load tap-changing transformer and connected to the second modulation and demodulation module; an execution module identifies the control content of the control signal and adjusts the output voltage of the on-load tap-changing transformer based on the control content; wherein the execution module is located in the on-load tap-changing transformer; and an execution feedback module provides feedback on the output voltage adjustment result of the on-load tap-changing transformer. This method of adjusting the on-load tap-changing transformer based on a carrier cable allows for remote manual adjustment, improving worker safety. Simultaneously, the transformer output voltage can be obtained in real time, allowing workers to adjust the on-load tap-changing transformer's output voltage scheme in real time, improving the flexibility and efficiency of on-load tap-changing transformer voltage adjustment.

[0158] The voltage regulation method of the carrier cable-based voltage regulating transformer provided in this embodiment corresponds to the device provided in the above embodiments and has a corresponding execution process and beneficial effects, which will not be repeated here.

[0159] Example 5

[0160] Figure 5 This is a schematic diagram of the structure of the electronic device provided in Embodiment 5 of this application. Figure 5 As shown, this application embodiment also provides an electronic device 500, including a processor 501, a memory 502, and a program or instructions stored in the memory 502 and executable on the processor 501. When the program or instructions are executed by the processor 501, they implement the various processes of the above-described embodiment of the regulating device for a voltage regulating transformer based on a carrier cable and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0161] 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.

[0162] Example 6

[0163] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described embodiment of the regulating device for a voltage regulating transformer based on a carrier cable, and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0164] 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.

[0165] Example 7

[0166] 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 embodiment of the regulating device for a voltage regulating transformer based on a carrier cable, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0167] 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.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] The above description is merely a preferred embodiment and the technical principles employed in this application. This application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that can be made by those skilled in the art will not depart from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the claims.

Claims

1. A regulating device for a voltage regulating transformer based on a carrier cable, characterized in that, The device includes: The remote control module is used to receive control signals sent to the voltage regulating transformer; The first modulation and demodulation module is used to modulate the control signal into a first transmission signal according to a preset frequency range of the power line carrier. The second modulation and demodulation module is connected to the first modulation and demodulation module via a power line. It is used to receive the first transmitted signal and demodulate the first transmitted signal to obtain a control signal. A receiving module, located in an on-load tap-changing transformer and connected to the second modulation and demodulation module, is used to receive the control signal; An execution module, located in the on-load tap-changing transformer, is used to identify the control content of the control signal and adjust the output voltage of the on-load tap-changing transformer based on the control content. The execution feedback module is used to provide feedback on the output voltage regulation result of the on-load tap-changing transformer; The remote control module is further configured to generate a status viewing command for the on-load tap-changing transformer; a first modulation and demodulation module is configured to modulate the status viewing command into a second transmission signal according to the frequency range of the power line carrier; a second modulation and demodulation module is configured to receive the second transmission signal and demodulate the second transmission signal to obtain the status viewing command; a receiving module is disposed in the on-load tap-changing transformer and connected to the second modulation and demodulation module, and is configured to receive the status viewing command; an execution module is disposed in the on-load tap-changing transformer and is configured to acquire the operating status of the on-load tap-changing transformer; wherein, the operating status includes an automatic adjustment status and a manual adjustment status; an execution feedback module is configured to monitor the current operating status of the on-load tap-changing transformer; and the remote control module is configured to receive the feedback status information and switch the operating status of the on-load tap-changing transformer to the manual adjustment status through the execution module. The execution module is used to switch the operating state of the on-load tap-changing transformer to the automatic adjustment state after switching the operating state of the on-load tap-changing transformer to the manual adjustment state, and if an automatic adjustment trigger event is detected, switch the operating state of the on-load tap-changing transformer to the automatic adjustment state, and feed back the switching information to the remote control module through the second modulation and demodulation module. The first modulation and demodulation module is configured to modulate the control signal into a first transmission signal according to a first frequency range of the power line carrier; the second modulation and demodulation module is connected to the first modulation and demodulation module via a power line, and is configured to receive the first transmission signal and demodulate the first transmission signal using a demodulation mechanism corresponding to the first frequency range to obtain the control signal; and to modulate the output voltage adjustment result into a first feedback signal according to a second frequency range of the power line carrier; the first modulation and demodulation module is further configured to demodulate the first feedback signal using a demodulation mechanism corresponding to the second frequency range to obtain the output voltage adjustment result.

2. The regulating device for a voltage regulating transformer based on a carrier cable according to claim 1, characterized in that: The first frequency range is higher than the second frequency range, and the first frequency range and the second frequency range do not overlap.

3. A method for regulating a voltage-regulating transformer based on a carrier cable, characterized in that, The method includes: The remote control module receives control signals from the voltage regulating transformer. The control signal is modulated into a first transmission signal according to a preset frequency range of the power line carrier by the first modulation and demodulation module. The first transmitted signal is received by the second modulation and demodulation module, and the first transmitted signal is demodulated to obtain the control signal; wherein the second modulation and demodulation module is connected to the first modulation and demodulation module via a power line; The control signal is received by a receiving module; wherein the receiving module is disposed in an on-load tap-changing transformer and is connected to the second modulation and demodulation module; The execution module identifies the control content of the control signal and adjusts the output voltage of the on-load tap-changing transformer based on the control content; wherein, the execution module is disposed in the on-load tap-changing transformer; The output voltage regulation result of the on-load tap-changing transformer is fed back through the feedback module. Before receiving the control signal sent to the voltage regulating transformer via the remote control module, the method further includes: generating a status viewing command for the on-load voltage regulating transformer via the remote control module; modulating the status viewing command into a second transmission signal according to the frequency range of the power line carrier via a first modulation and demodulation module; receiving the second transmission signal via a second modulation and demodulation module and demodulating the second transmission signal to obtain the status viewing command; and receiving the status viewing command via a receiving module; wherein the receiving module is disposed in the on-load voltage regulating transformer and connected to the second modulation and demodulation module; The operating status of the on-load tap-changing transformer is obtained through the execution module; wherein, the operating status includes automatic adjustment status and manual adjustment status; the execution module is set in the on-load tap-changing transformer; the current operating status of the on-load tap-changing transformer is monitored through the execution feedback module; the feedback status information is received through the remote control module, and the operating status of the on-load tap-changing transformer is switched to manual adjustment status through the first modulation and demodulation module; After switching the operating state of the on-load tap-changing transformer to the manual adjustment state, the method further includes: if an automatic adjustment trigger event is detected, switching the operating state of the on-load tap-changing transformer to the automatic adjustment state, and feeding back the switching information to the remote control module through the second modulation and demodulation module; The method includes: modulating the control signal into a first transmission signal according to a preset frequency range of the power line carrier using a first modulation and demodulation module; receiving the first transmission signal and demodulating it using a second modulation and demodulation module to obtain a control signal; and receiving the first transmission signal and demodulating it using a demodulation mechanism corresponding to the first frequency range to obtain a control signal. The method further includes: modulating the output voltage adjustment result into a first feedback signal according to a second frequency range of the power line carrier using a second modulation and demodulation module; and demodulating the first feedback signal using a demodulation mechanism corresponding to the second frequency range using a first modulation and demodulation module to obtain the output voltage adjustment result.

4. An electronic device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the adjustment method of the voltage regulating transformer based on the carrier cable as described in claim 3.

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