Alternating-current voltage regulation method, device and equipment for low-voltage direct-current transmission and medium
Through the AC voltage regulation method of low-voltage DC transmission, the voltage problems of traditional distribution networks under load diversity and complexity are solved, the safety and efficiency of the power grid are improved, and the needs of new power systems are adapted.
Patent Information
- Application Number
- CN202411415883.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2024-12-27
AI Technical Summary
The three-phase imbalance, voltage drop, fluctuation, flickering and other problems caused by load diversity and complexity of traditional low-voltage AC distribution networks are difficult to ensure the safe operation of the power grid, and cannot adapt to the needs of multi-energy access for new power systems in real time. , resulting in interference in the power supply quality.
The AC voltage regulation method of low-voltage DC transmission is adopted. By obtaining the terminal voltage data and current transmission data, the voltage is detected and adjusted in real time, the line leakage current is monitored, the voltage regulation command and the stop command are triggered, and the bypass switch is used in combination with series and parallel modes. Self-test function to improve grid safety and response speed.
Real-time adjustment of terminal voltage and line monitoring protection are achieved, the safety performance of the power grid is improved, cost-saving, and rapid response to voltage changes, improving the safety and efficiency of power grid operation.
Smart Images
Figure CN119209556A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of voltage regulation, and in particular to an AC voltage regulation method, device, equipment and medium for low-voltage direct current transmission. Background Art
[0002] At present, the traditional low-voltage AC distribution network technology, due to the diversity and complexity of loads, causes many problems during operation, such as three-phase imbalance, voltage sag, voltage fluctuation, flicker, harmonics, etc., which seriously endanger the safe operation of the distribution network, and the power safety cannot be effectively guaranteed. At the same time, it cannot well adapt to the requirements of multi-energy access in the new power system.
[0003] The existing physical characteristics of the traditional AC power distribution system determine that it is difficult for substations and substations to solve many problems from the source side. At the same time, from the perspective of electric energy flow, the access of new energy (such as photovoltaics, energy storage, etc.) cannot adapt to source-load matching and flexible supply demand in real time, that is, it is difficult to coordinate the supply and demand order and supply and demand balance, resulting in serious interference in power supply quality, voltage fluctuations, and frequent accidents. Summary of the invention
[0004] In order to adapt to the needs of new power systems and improve the problems existing in low-voltage distribution networks, the present application provides an AC voltage regulation method, device, equipment and medium for low-voltage direct current transmission.
[0005] The above-mentioned invention objective of the present application is achieved through the following technical solutions: A method for regulating AC voltage of low-voltage direct current power transmission, the method comprising: Acquire terminal voltage data, acquire a target to be adjusted according to the terminal voltage data, and acquire current transmission data and a current transmission direction according to the target to be adjusted; Acquire the working mode of the transmission line, and trigger the corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the working mode of the transmission line; Acquire voltage regulation feedback corresponding to the voltage regulation instruction, and detect line leakage current data in real time according to the voltage regulation feedback; When the leakage current data exceeds a preset value, the corresponding duration is counted, and when the duration exceeds a set value, a stop instruction is triggered.
[0006] By adopting the above technical solution, in the process of electricity use, the voltage data of the end user can be detected in real time, so that the voltage of the end user can be adjusted in time according to the terminal voltage data. In the process of adjusting the voltage, the line leakage current data is obtained in real time, so that the insulated line can be monitored and protected, thereby improving the safety performance of the power grid.
[0007] In a preferred example, the present application may be further configured as follows: the transmission line working mode includes a series mode, and the obtaining of the transmission line working mode triggers a corresponding voltage adjustment instruction according to the current transmission data, the current transmission direction and the transmission line working mode, specifically including: When the transmission line working mode is a series mode, obtaining a voltage regulation amount according to the current transmission direction and the transmission line working mode; A bypass switch on-off instruction is triggered according to the voltage regulation amount, and the voltage regulation instruction is triggered after the switch on-off feedback corresponding to the bypass switch on-off instruction is obtained.
[0008] By adopting the above technical solution, in the series mode, the current cables or transmission circuits can be used, thereby saving costs. At the same time, a bypass switch is set to exit operation when a fault occurs, thereby improving safety.
[0009] In a preferred example, the present application may be further configured as follows: the transmission line working mode includes a parallel mode, and the obtaining of the transmission line working mode triggers a corresponding voltage adjustment instruction according to the current transmission data, the current transmission direction and the transmission line working mode, specifically including: When the transmission line working mode is a parallel mode, obtaining a voltage regulation amount according to the current transmission direction and the transmission line working mode; The voltage adjustment instruction is triggered according to the voltage adjustment amount.
[0010] By adopting the above technical solution, in parallel mode, a group of DC transmission lines can be added, and a mixed mode of AC and DC transmission can be adopted, so that voltage regulation can be responded quickly, and the direction of terminal voltage and current can be adjusted.
[0011] In a preferred example, the present application may be further configured as follows: before obtaining the voltage regulation feedback corresponding to the voltage regulation instruction and detecting the line leakage current data in real time according to the voltage regulation feedback, the AC voltage regulation method for low voltage direct current transmission further includes: Obtaining an electronic device identification, triggering a corresponding device self-test instruction according to the electronic device identification, and obtaining the corresponding device operating status in real time; According to the electronic device identification, the operating state of the device is detected, and if abnormal operation of the device is detected, a device stop instruction is triggered; When the abnormality elimination information is obtained, the device work recovery instruction is triggered.
[0012] By adopting the above technical solution, when the power grid is running, each electronic device can perform self-checking, so that when the electronic device detects an abnormality, the operation can be stopped in time, thereby improving the safety of the power grid operation.
[0013] In a preferred example, the present application can be further configured as follows: after the abnormality elimination information is obtained, the device work recovery instruction is triggered, specifically including: Obtaining a device repair message, and obtaining the device operation state triggered by the device self-check instruction as the operation state to be detected; If the operating state to be detected is that the device operates normally, the abnormality elimination information is triggered.
[0014] By adopting the above technical solution, during the process of repairing the device, that is, after completing the repair of the abnormal device, the device automatically determines the abnormality elimination situation through its self-check function, and automatically resumes operation after the abnormality is eliminated, thereby improving the efficiency and intelligence of the power grid operation.
[0015] The second object of the invention is achieved by the following technical solutions: An AC voltage regulating device for low-voltage direct current power transmission, characterized in that the AC voltage regulating device for low-voltage direct current power transmission comprises: A target acquisition module to be adjusted is used to acquire terminal voltage data, acquire the target to be adjusted according to the terminal voltage data, and acquire current transmission data and current transmission direction according to the target to be adjusted; A voltage regulation module, used for obtaining a transmission line working mode, and triggering a corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the transmission line working mode; A detection module is run to obtain voltage regulation feedback corresponding to the voltage regulation instruction, and detect line leakage current data in real time according to the voltage regulation feedback; The exception handling module is used to count the corresponding duration when the leakage current data exceeds a preset value, and to trigger a device stop instruction when the duration exceeds a set value.
[0016] By adopting the above technical solution, in the process of electricity use, the voltage data of the end user can be detected in real time, so that the voltage of the end user can be adjusted in time according to the terminal voltage data. In the process of adjusting the voltage, the line leakage current data is obtained in real time, so that the insulated line can be monitored and protected, thereby improving the safety performance of the power grid.
[0017] The third objective of the present application is achieved through the following technical solutions: A computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned method for regulating AC voltage of low-voltage direct current transmission when executing the computer program.
[0018] The fourth objective of the present application is achieved through the following technical solutions: A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for regulating AC voltage of low-voltage direct current power transmission.
[0019] In summary, the present application includes at least one of the following beneficial technical effects: 1. In the process of using electricity, the voltage data of the end user can be detected in real time, so that the voltage of the end user can be adjusted in time according to the terminal voltage data. In the process of adjusting the voltage, the line leakage current data can be obtained in real time, so that the insulated line can be monitored and protected, thereby improving the safety performance of the power grid; 2. In parallel mode, a group of DC transmission lines can be added, and a mixed mode of AC and DC transmission can be adopted, so as to quickly respond to voltage regulation and adjust the direction of terminal voltage and current; 3. When the power grid is running, each electronic device will perform self-checking, so that when the electronic device detects an abnormality, it can stop running in time, thereby improving the safety of power grid operation. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart of an AC voltage regulation method for low voltage DC power transmission in one embodiment of the present application; Figure 2 This is a schematic diagram of the module composition in one embodiment of the present application; Figure 3 It is a flowchart for implementing step S20 of the method for regulating AC voltage of low voltage DC power transmission in one embodiment of the present application; Figure 4 This is a schematic diagram of the series mode structure in one embodiment of the present application; Figure 5It is a field implementation flow chart of step S20 of the method for regulating AC voltage of low voltage DC power transmission in one embodiment of the present application; Figure 6 This is a schematic diagram of the parallel mode structure in one embodiment of the present application; Figure 7 is another implementation flow chart of the method for regulating AC voltage in low voltage DC power transmission in one embodiment of the present application; Figure 8 It is a flow chart for implementing step S303 of the method for regulating AC voltage of low voltage DC power transmission in one embodiment of the present application; Fig. 9 It is a principle block diagram of an AC voltage regulation system for low voltage DC power transmission in one embodiment of the present application; Fig.10 It is a schematic diagram of a device in an embodiment of the present application. DETAILED DESCRIPTION
[0020] The present application is further described in detail below in conjunction with the accompanying drawings.
[0021] In one embodiment, if Figure 1 As shown, the present application discloses an AC voltage regulation method for low-voltage direct current transmission, which specifically includes the following steps: S10: Acquire terminal voltage data, acquire a target to be adjusted according to the terminal voltage data, and acquire current transmission data and current transmission direction according to the target to be adjusted.
[0022] In this embodiment, the terminal voltage data refers to the voltage data at the end user side in the power grid. The target to be adjusted refers to the user side that needs voltage adjustment.
[0023] Specifically, Figure 2 As shown, the power grid structure in this embodiment is composed of the following modules: AC voltage detection, bidirectional AC / DC module, bidirectional voltage control, phase-locked circuit, drive circuit, protection module, frequency detection, DSP control center, display module and human-machine interface, phase detection and communication module. The AC voltage detection module and the drive circuit act on the bidirectional AC / DC module, and the bidirectional AC / DC module interacts with the bidirectional voltage control module. The bidirectional AC / DC module, the protection module, the DSP control center and the phase-locked circuit act in sequence to form a loop. The frequency detection module and the phase detection module act on the DSP control center, and the communication module, the display module and the human-machine interface interact with the DSP control center respectively.
[0024] Therefore, the power consumption of end users is detected in real time through the voltage detection function. When the voltage of the end user is low or high, the user is taken as the target to be adjusted through the two-way voltage regulation function, and the current transmission data and current transmission direction of the user during the period are obtained.
[0025] S20: Acquire the transmission line working mode, and trigger the corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the transmission line working mode.
[0026] In this embodiment, the transmission line operation mode refers to a connection mode in the power grid line, including a series connection mode and a parallel connection mode.
[0027] Specifically, when constructing a power grid, a series mode or a parallel mode is adopted according to the specific electricity demand. Different working modes have different line connection methods, so the voltage regulation methods are also different. Therefore, the transmission line working mode corresponding to the target to be adjusted is obtained, and then the voltage regulation instruction is triggered according to the transmission line working mode and combined with the current transmission data and current transmission direction.
[0028] S30: Obtain voltage regulation feedback corresponding to the voltage regulation instruction, and detect line leakage current data in real time according to the voltage regulation feedback.
[0029] Specifically, when the voltage regulation feedback is obtained, that is, when the voltage regulation process begins, the leakage current of the line is detected in real time through the corresponding detection module as the line leakage current data.
[0030] S40: When the leakage current data exceeds a preset value, the corresponding duration is counted, and when the duration exceeds the set value, a stop instruction of the device is triggered.
[0031] Specifically, when the leakage current exceeds the leakage current setting value and the duration exceeds the time setting value, the device immediately stops outputting, the AC and DC are disconnected from the power grid, and an alarm indication is given.
[0032] In summary, using Figure 2 The modules are composed of the following core functions: 1) Concurrent testing It has dual designs of phase-locked circuit and synchronous circuit, and can operate synchronously with the power grid or in a self-constructed network.
[0033] 2) Bidirectional voltage regulation function Supports bidirectional voltage regulation function. When there is low voltage or high voltage at the end of the line, the device can automatically adjust the current transmission size and direction to ensure that the voltage of the target user is maintained within the normal range (settable).
[0034] 3) Self-check function The device has a power-on self-check function. When an external wiring error occurs or the device itself fails, the device should automatically protect and issue an alarm message. After the fault is eliminated, the device automatically resumes work.
[0035] (3.1) AC and DC wiring self-test The device has AC and DC wiring self-check and alarm functions. When the positive and negative wiring of the DC bus is wrong, the device can identify the DC wiring error, stop working, and give an alarm indication. When the AC output phase line and N line are wrongly connected, the device can identify the AC wiring error, stop working, and give an alarm indication.
[0036] (3.2) Self-test of key components The device has the function of self-checking the key components inside, and the self-checking should be carried out continuously. If there is an abnormality in the self-checking at any time, the device should stop working and issue an alarm message. After the abnormality is eliminated, the device automatically resumes working. The key components of the device include: AC and DC relays, power electronic components, lightning protection components, fans, etc.
[0037] 4) Odd and even harmonic absorption function 5) Protection function The device is equipped with AC and DC overcurrent protection, over- and under-frequency protection (applicable to AC), over- and under-voltage protection, over-temperature protection, phase loss protection, busbar insulation, branch insulation monitoring and protection, and lightning protection failure warning.
[0038] 6) Transmission line insulation protection The device can detect line leakage current. When the leakage current exceeds the set value and lasts longer than the set time, the device immediately stops outputting, disconnects the AC and DC from the grid, and gives an alarm. After the leakage current is eliminated, the device needs to automatically resume operation.
[0039] In one embodiment, if Figure 3 As shown, the transmission line working mode includes a series mode. In step S20, the transmission line working mode is obtained, and the corresponding voltage adjustment instruction is triggered according to the current transmission data, the current transmission direction and the transmission line working mode, which specifically includes: S211: When the transmission line working mode is the series mode, the voltage regulation amount is obtained according to the current transmission direction and the transmission line working mode.
[0040] Specifically, refer to Figure 4 When the transmission line is in series mode, the actual amount to be adjusted is obtained as the voltage adjustment amount according to the current transmission data and current transmission direction of the target to be adjusted.
[0041] S212: triggering a bypass switch on-off instruction according to the voltage regulation amount, and after obtaining switch on-off feedback corresponding to the bypass switch on-off instruction, triggering the voltage regulation instruction.
[0042] Specifically, in the series mode, the voltage regulating module and the boost module both include a bypass switch. Therefore, according to the actual adjustment requirements, the corresponding bypass switch on-off instruction is triggered to control the corresponding bypass switch to be turned on or off. After the switch on-off feedback is obtained, the corresponding bypass switch is turned on or off, and the voltage adjustment instruction is triggered according to the voltage adjustment amount.
[0043] In one embodiment, if Figure 5 As shown, the transmission line working mode includes a parallel mode. In step S20, the transmission line working mode is obtained, and the corresponding voltage adjustment instruction is triggered according to the current transmission data, the current transmission direction and the transmission line working mode, which specifically includes: S221: When the transmission line working mode is the parallel mode, the voltage regulation amount is obtained according to the current transmission direction and the transmission line working mode.
[0044] Specifically, refer to Figure 6 When the transmission line working mode is the parallel mode, the actual amount to be adjusted is obtained as the voltage adjustment amount according to the current transmission data and current transmission direction of the target to be adjusted.
[0045] S222: Triggering a voltage adjustment instruction according to the voltage adjustment amount.
[0046] Specifically, a voltage adjustment instruction is triggered directly according to the voltage adjustment amount to adjust the voltage condition at the end user side.
[0047] In one embodiment, if Figure 7 As shown, before step S30, the AC voltage regulation method for low voltage direct current power transmission further includes: S301: Acquire an electronic device identification, trigger a corresponding device self-test instruction according to the electronic device identification, and acquire a corresponding device operating status in real time.
[0048] In this embodiment, the electronic component identification refers to the identification of key components inside the power grid device.
[0049] Specifically, during the process of assembling the power grid, the technicians pre-screen the key electronic devices according to the actual functions of the power grid, and record each key electronic device with a unique identifier to obtain the electronic device identifier. Furthermore, when the power grid line starts to operate, a device self-test instruction is sent to the detection module of each key electronic device according to the electronic device identifier to obtain the real-time device operation status.
[0050] S302: Detect the operating status of the device according to the electronic device identification, and if abnormal operation of the device is detected, trigger a device stop instruction.
[0051] Specifically, after obtaining the real-time device operating status, the device operating status is detected. When an abnormal operation is detected, a device stop instruction is triggered to control the corresponding line to stop operating, which is convenient for subsequent maintenance.
[0052] S303: After the abnormality elimination information is obtained, the device work recovery instruction is triggered.
[0053] Specifically, after the electronic device is inspected and repaired and it is confirmed that the abnormal problem is repaired, the abnormality elimination information is triggered, and then the device work recovery instruction is triggered to control the automatic recovery work.
[0054] In one embodiment, if Figure 8 As shown, in step S303, that is, after the abnormality elimination information is obtained, the device work recovery instruction is triggered, which specifically includes: S3031: Obtain device repair information, and obtain the device operation state triggered by the device self-test instruction as the operation state to be detected.
[0055] Specifically, after the abnormal device is repaired, the device repair message is triggered and the line operation test is started. During the test, the electronic device is continuously self-checked and the device operation status is obtained as the operation status to be detected to determine whether the device repair is completed.
[0056] S3032: If the operating status to be detected is that the device is operating normally, triggering abnormality elimination information.
[0057] Specifically, if the running state to be detected is that the device is running normally, it means that the abnormality repair has been completed, and the abnormality elimination message is triggered.
[0058] In summary, this embodiment has the following effects: 1. Suitable for the transformation of traditional power grids to new power grids, and can solve technical problems in four stages: transformation, iteration, construction, and adaptation; 2. It can solve many problems caused by the diversity and complexity of loads, such as three-phase imbalance, voltage sag, voltage fluctuation, flicker, harmonics, etc.
[0059] 3. In series mode, the existing cables or transmission circuits can be used to save costs; 4. In parallel mode, add a group of DC transmission lines and adopt a mixed mode of AC and DC transmission; 1) Synchronous operation, mutual backup, and improved power supply reliability; 2) The terminal voltage and current direction can be adjusted in real time; 3) The device has a built-in bypass switch, which can be shut down in case of failure or maintenance.
[0060] 2) External insulation requirements are improved.
[0061] 4. The safety performance of power grid operation is greatly improved The device can detect line leakage current. When the leakage current exceeds the set value and lasts longer than the set time, the device immediately stops outputting, disconnects the AC and DC from the grid, and gives an alarm. After the leakage current is eliminated, the device needs to automatically resume operation.
[0062] 5. Fast response speed and greatly improved voltage stability When the output capacity suddenly increases / decreases between 0% and 100% of the rated capacity, the time taken for the voltage to reach 90% of the set target value shall not exceed 500ms.
[0063] 6. Accurate fault diagnosis and high maintenance efficiency Each wave sampling is no less than 128 points and the recording length is no less than 120ms. When a line fault occurs, the waveform at the time of the fault can be automatically stored and the fault recording data can be uploaded, providing a reliable basis for fault analysis and processing.
[0064] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0065] In one embodiment, an AC voltage regulating device for low-voltage direct current power transmission is provided, and the AC voltage regulating device for low-voltage direct current power transmission corresponds one-to-one to the AC voltage regulating method for low-voltage direct current power transmission in the above-mentioned embodiment. Fig. 9 As shown, the AC voltage regulation device for low voltage direct current transmission includes a target acquisition module to be regulated, a voltage regulation module, an operation detection module and an abnormality processing module. The functional modules are described in detail as follows: The target acquisition module to be adjusted is used to obtain the terminal voltage data, obtain the target to be adjusted according to the terminal voltage data, and obtain the current transmission data and the current transmission direction according to the target to be adjusted; A voltage regulation module is used to obtain the working mode of the transmission line and trigger the corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the working mode of the transmission line; The operation detection module is used to obtain voltage regulation feedback corresponding to the voltage regulation instruction, and detect the line leakage current data in real time according to the voltage regulation feedback; The exception handling module is used to count the corresponding duration when the leakage current data exceeds the preset value, and trigger the device to stop the instruction when the duration exceeds the set value.
[0066] Optionally, the transmission line operation mode includes a series connection mode, and the voltage regulation module includes: A first voltage quantity acquisition submodule is used to acquire a voltage regulation quantity according to a current transmission direction and a transmission line working mode when the transmission line working mode is a series mode; The first voltage regulation submodule is used to trigger the bypass switch on-off instruction according to the voltage regulation amount, and trigger the voltage regulation instruction after obtaining the switch on-off feedback corresponding to the bypass switch on-off instruction.
[0067] Optionally, the transmission line operation mode includes a parallel mode, and the voltage regulation module includes: A second voltage quantity acquisition submodule is used to acquire a voltage regulation quantity according to a current transmission direction and a transmission line working mode when the transmission line working mode is a parallel mode; The second voltage regulation submodule is used to trigger a voltage regulation instruction according to the voltage regulation amount.
[0068] Optionally, the AC voltage regulating device for low voltage DC power transmission further comprises: The device self-test module is used to obtain the electronic device identification, trigger the corresponding device self-test instruction according to the electronic device identification, and obtain the corresponding device operation status in real time; The abnormality troubleshooting module is used to detect the operation status of the device according to the electronic device identification, and if the device operation is abnormal, the device stop instruction is triggered; The automatic recovery module is used to trigger the device work recovery instruction after obtaining the abnormality elimination information.
[0069] Optional, automatic recovery modules include: The repair detection submodule is used to obtain the device repair message and obtain the device operation state triggered by the device self-test instruction as the operation state to be detected; The automatic recovery submodule is used to trigger abnormality elimination information if the operating state to be detected is that the device is operating normally.
[0070] The specific definition of the AC voltage regulating device for low-voltage direct current transmission can be found in the above definition of the AC voltage regulating method for low-voltage direct current transmission, which will not be repeated here. Each module in the above-mentioned AC voltage regulating device for low-voltage direct current transmission can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
[0071] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Fig.10As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an AC voltage regulation method for low-voltage direct current transmission is implemented.
[0072] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program: Acquire terminal voltage data, acquire the target to be adjusted according to the terminal voltage data, and acquire current transmission data and current transmission direction according to the target to be adjusted; Acquire the working mode of the transmission line, and trigger the corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the working mode of the transmission line; Obtaining voltage regulation feedback corresponding to the voltage regulation instruction, and detecting line leakage current data in real time according to the voltage regulation feedback; When the leakage current data exceeds the preset value, the corresponding duration is counted, and when the duration exceeds the set value, the device is triggered to stop the command.
[0073] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: Acquire terminal voltage data, acquire the target to be adjusted according to the terminal voltage data, and acquire current transmission data and current transmission direction according to the target to be adjusted; Acquire the working mode of the transmission line, and trigger the corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the working mode of the transmission line; Obtaining voltage regulation feedback corresponding to the voltage regulation instruction, and detecting line leakage current data in real time according to the voltage regulation feedback; When the leakage current data exceeds the preset value, the corresponding duration is counted, and when the duration exceeds the set value, the device is triggered to stop the command.
[0074] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.
[0075] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.
[0076] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A method for regulating AC voltage in low voltage DC power transmission, characterized in that: The AC voltage regulation method for low voltage direct current power transmission comprises: Acquire terminal voltage data, acquire a target to be adjusted according to the terminal voltage data, and acquire current transmission data and current transmission direction according to the target to be adjusted; Acquire a transmission line operation mode, and trigger a corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the transmission line operation mode; Acquire voltage regulation feedback corresponding to the voltage regulation instruction, and detect line leakage current data in real time according to the voltage regulation feedback; When the leakage current data exceeds a preset value, the corresponding duration is counted, and when the duration exceeds a set value, a stop instruction is triggered.
2. The AC voltage regulation method for low voltage direct current transmission according to claim 1, characterized in that: The transmission line operation mode includes a series mode, and the obtaining of the transmission line operation mode triggers a corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the transmission line operation mode, specifically including: When the transmission line working mode is a series mode, obtaining a voltage regulation amount according to the current transmission direction and the transmission line working mode; A bypass switch on-off instruction is triggered according to the voltage regulation amount, and the voltage regulation instruction is triggered after the switch on-off feedback corresponding to the bypass switch on-off instruction is obtained.
3. The AC voltage regulation method for low voltage direct current transmission according to claim 1, characterized in that: The transmission line operation mode includes a parallel mode, and the acquisition of the transmission line operation mode triggers a corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the transmission line operation mode, specifically including: When the transmission line working mode is a parallel mode, obtaining a voltage regulation amount according to the current transmission direction and the transmission line working mode; The voltage adjustment instruction is triggered according to the voltage adjustment amount.
4. The AC voltage regulation method for low voltage direct current transmission according to claim 1, characterized in that: Before obtaining the voltage regulation feedback corresponding to the voltage regulation instruction and detecting the line leakage current data in real time according to the voltage regulation feedback, the AC voltage regulation method for low voltage direct current power transmission further includes: Obtaining an electronic device identification, triggering a corresponding device self-test instruction according to the electronic device identification, and obtaining the corresponding device operating status in real time; According to the electronic device identification, the operating state of the device is detected, and if abnormal operation of the device is detected, a device stop instruction is triggered; When the abnormality elimination information is obtained, the device work recovery instruction is triggered.
5. The AC voltage regulation method for low voltage direct current transmission according to claim 4, characterized in that: After the abnormality elimination information is obtained, the device work recovery instruction is triggered, which specifically includes: Obtaining a device repair message, and obtaining the device operation state triggered by the device self-check instruction as the operation state to be detected; If the operating state to be detected is that the device operates normally, the abnormality elimination information is triggered.
6. An AC voltage regulating device for low voltage DC power transmission, characterized in that: The AC voltage regulating device for low voltage direct current power transmission comprises: A target acquisition module to be adjusted is used to acquire terminal voltage data, acquire the target to be adjusted according to the terminal voltage data, and acquire current transmission data and current transmission direction according to the target to be adjusted; A voltage regulation module, used for obtaining a transmission line working mode, and triggering a corresponding voltage regulation instruction according to the current transmission data, the current transmission direction and the transmission line working mode; A running detection module is used to obtain voltage regulation feedback corresponding to the voltage regulation instruction, and detect line leakage current data in real time according to the voltage regulation feedback; The exception handling module is used to count the corresponding duration when the leakage current data exceeds a preset value, and to trigger a device stop instruction when the duration exceeds a set value.
7. The AC voltage regulating device for low voltage direct current transmission according to claim 6, characterized in that: The transmission line operation mode includes a series mode, and the voltage regulation module includes: A first voltage amount acquisition submodule, used for acquiring a voltage regulation amount according to the current transmission direction and the transmission line working mode when the transmission line working mode is a series mode; The first voltage regulation submodule is used to trigger the bypass switch on-off instruction according to the voltage regulation amount, and trigger the voltage regulation instruction after obtaining the switch on-off feedback corresponding to the bypass switch on-off instruction.
8. The AC voltage regulating device for low voltage direct current transmission according to claim 6, characterized in that: The transmission line operation mode includes a parallel mode, and the voltage regulation module includes: A second voltage quantity acquisition submodule is used to acquire a voltage regulation quantity according to the current transmission direction and the transmission line working mode when the transmission line working mode is a parallel mode; The second voltage regulation submodule is used to trigger the voltage regulation instruction according to the voltage regulation amount.
9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for regulating AC voltage of low-voltage direct current power transmission as claimed in any one of claims 1 to 5 are implemented.
10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for regulating AC voltage of low-voltage direct current power transmission as claimed in any one of claims 1 to 5 are implemented.