Switching logic generation method of low-frequency on-load tap-changer

Abstract

The invention discloses a switching logic generation method of a low-frequency on-load tap-changer. The method relates to the technical field of power equipment, and comprises the following steps: constructing a basic joint debugging logic scheme library of the low-frequency on-load tap-changer; calling candidate switching logic of the low-frequency on-load tap-changer from the basic joint debugging logic scheme library based on a target starting condition of the low-frequency on-load tap-changer; checking whether the candidate switching logic meets performance requirements or not; and in response to detecting that the switching logic meets the performance requirement, determining that the candidate switching logic is target switching logic of the low-frequency on-load tap-changer. According to the invention, the technical problem of high complexity of generating the switching logic of the low-frequency on-load tap-changer in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a method for generating switching logic of a low-frequency on-load tap changer. Background Art

[0002] Flexible low-frequency (20Hz and below) transmission technology is a high-efficiency AC transmission technology based on power electronics technology. It can effectively improve the transmission capacity, transmission distance and transmission efficiency of transmission lines. It has technical and economic advantages in scenarios such as offshore wind power transmission, and its development prospects are very broad. However, the generation of switching logic for low-frequency on-load tap changers currently requires consideration of the electrical performance, mechanical design requirements, control system design, and safety performance of low-frequency on-load switches, which leads to a high degree of complexity in the generation of switching logic for low-frequency on-load switches.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiment of the present invention provides a method for generating switching logic of a low-frequency on-load tap changer, so as to at least solve the technical problem of high complexity in generating switching logic of a low-frequency on-load tap changer in the related art.

[0005] According to one aspect of an embodiment of the present invention, a method for generating switching logic of a low-frequency on-load tap changer is provided, comprising: constructing a basic joint debugging logic solution library of the low-frequency on-load tap changer, wherein the basic joint debugging logic solution library comprises a first module for carrying control of a transfer switch in the low-frequency on-load tap changer, a second module for carrying control of a tap selector in the low-frequency on-load tap changer, a first switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and a second switching logic of the second module under different starting conditions; based on a target starting condition of the low-frequency on-load tap changer, calling a candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library, wherein the target starting condition is used to control the safe starting of the low-frequency on-load tap changer, and the candidate switching logic comprises: a first switching logic under the target starting condition and a second switching logic under the target starting condition; checking whether the candidate switching logic meets performance requirements, wherein the performance requirements are used to characterize that the first module drives the transfer switch to complete the switching action within a preset time, and the second module drives the tap selector to complete the switching action within a preset time; in response to detecting that the switching logic meets the performance requirements, determining the candidate switching logic as the target switching logic of the low-frequency on-load tap changer.

[0006] Optionally, checking whether the candidate switching logic meets the performance requirements includes: controlling the start signal synchronization of the transfer switch and the tap selector; based on the test conditions, controlling the operation times of the low-frequency on-load tap changer to be a preset test times; in response to the operation times of the low-frequency on-load tap changer reaching the preset test times, determining whether the odd-even contact switching of the transfer switch can be turned on, whether the contact switching of the tap selector can be turned on, whether the arc-off time of the low-frequency on-load tap changer is greater than or equal to a first preset time, whether the switching time of a single switching of the transfer switch is greater than or equal to a second preset time, and detecting the program of the transfer switch, wherein the first preset time is less than the second preset time. In response to the switching of the odd and even number contacts of the switching switch being able to conduct, the switching of the contacts of the tap selector being able to conduct, the arc-off time of the low-frequency on-load tap changer being greater than or equal to the first preset time, the switching time of a single switching of the switching switch being greater than or equal to the second preset time, and the program of the switching switch being normal, it is determined that the switching logic meets the performance requirements; in response to the switching of the odd and even number contacts of the switching switch being unable to conduct, the switching of the contacts of the tap selector being unable to conduct, the arc-off time of the low-frequency on-load tap changer being less than the first preset time, the switching time of a single switching of the switching switch being less than the second preset time, or the program of the switching switch being abnormal, it is determined that the switching logic does not meet the performance requirements.

[0007] Optionally, controlling the start signals of the switching switch and the tap selector to be synchronized includes: controlling the electric mechanism of the tap selector to switch to a first start gear position, wherein the electric mechanism has a plurality of continuous start gear positions; and controlling the initial position of the switching switch to be at a second start gear position corresponding to the first start gear position through the head motor.

[0008] Optionally, the method further includes: in response to the first starting gear position of the tap selector not corresponding to the second starting gear position of the switching switch, controlling the electric mechanism of the tap selector to be in a stopped state; based on the gear adjustment signal, controlling the second starting gear position of the switching switch through the head motor to correspond to the first starting gear position of the tap selector.

[0009] Optionally, the method further includes: in response to the end of operation of the electric mechanism, judging whether the first module can drive the switching switch to complete the switching action within a preset time, and whether the second module can complete the switching action of the tap selector within a preset time, wherein the first module at least includes a head motor and the second module at least includes a electric mechanism; in response to judging that the first module cannot drive the switching switch to complete the switching action within the preset time, or the second module cannot drive the tap selector to complete the switching action within the preset time, determining that the switching logic does not meet the performance requirements; in response to judging that the first module can drive the switching switch to complete the switching action within the preset time, and the second module can drive the tap selector to complete the switching action within the preset time, determining that the switching logic meets the performance requirements.

[0010] Optionally, in response to the candidate switching logic not satisfying the performance requirement, the first module or the second module is reselected.

[0011] Optionally, the method further includes: in response to detecting that the candidate switching logic does not meet the performance requirements, repeatedly executing the steps of calling the candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library based on the target start-up conditions of the low-frequency on-load tap changer, and checking whether the candidate switching logic meets the performance requirements, until the re-selected switching logic meets the performance requirements.

[0012] Optionally, the method also includes: constructing a first control logic of the first module, wherein the first control logic at least includes: the arc extinction time of the low-frequency on-load tap changer is greater than or equal to a third preset time, the switching time of a single switching of the switching switch is greater than or equal to a second preset time, the driving motor can drive a groove wheel mechanism matching the low-frequency on-load switch, and the driving motor cannot be powered off after operation, and the third preset time is greater than the second preset time; constructing a second control logic of the second module, wherein the second control logic at least includes: according to the working principle of the low-frequency on-load tap changer, time control is realized through signal acquisition, and it cooperates with the switching switch, and the working principle is switching first and then selecting.

[0013] According to another aspect of an embodiment of the present invention, a low-frequency on-load tap changer is provided, comprising: a first module, wherein the first module comprises: a switching timing unit, a switching drive unit, a switching transmission unit and a switching signal feedback unit; a second module, which is communicatively connected to the first module, wherein the second module comprises a tap timing unit, a tap drive unit, a tap transmission unit and a tap signal feedback unit.

[0014] Optionally, the tap drive unit is an electric mechanism; the tap transmission unit includes a plurality of transmission rods, a bevel gear box and a worm gear box; and the tap signal feedback unit is a gear position indicator plate.

[0015] Optionally, the switching drive unit is a head motor, wherein the switching drive unit is used to convert the received electrical signal into angular displacement or angular velocity on the motor shaft, and output the angular displacement or angular velocity; the switching transmission unit includes a transmission rod and a reduction box for transmission steering.

[0016] According to another aspect of an embodiment of the present invention, a switching logic generating device for a low-frequency on-load tap changer is provided, comprising: a building module, used to build a basic joint debugging logic solution library of the low-frequency on-load tap changer, wherein the basic joint debugging logic solution library comprises a first module for carrying and controlling a switching switch in the low-frequency on-load tap changer, a second module for carrying and controlling a tap selector in the low-frequency on-load tap changer, a first switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and a second switching logic of the second module under different starting conditions; a calling module, used to call the basic joint debugging logic solution library based on the target starting condition of the low-frequency on-load tap changer from the basic joint debugging logic solution library The solution library calls the candidate switching logic of the low-frequency on-load tap changer, wherein the target start condition is used to control the safe start of the low-frequency on-load tap changer, and the candidate switching logic includes: a first switching logic under the target start condition and a second switching logic under the target start condition; a verification module is used to verify whether the candidate switching logic meets the performance requirements, wherein the performance requirements are used to characterize that the first module drives the switch to complete the switching action within a preset time, and the second module drives the tap selector to complete the switching action within a preset time; a determination module is used to determine that the candidate switching logic is the target switching logic of the low-frequency on-load tap changer in response to detecting that the switching logic meets the performance requirements.

[0017] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0018] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0019] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0020] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0021] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0022] In an embodiment of the present invention, a basic joint debugging logic scheme library of a low-frequency on-load tap changer is constructed, wherein the basic joint debugging logic scheme library includes a first module for carrying control of a transfer switch in the low-frequency on-load tap changer, a second module for carrying control of a tap selector in the low-frequency on-load tap changer, a first switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and a second switching logic of the second module under different starting conditions; based on a target starting condition of the low-frequency on-load tap changer, a candidate switching logic of the low-frequency on-load tap changer is called from the basic joint debugging logic scheme library, wherein the target starting condition is used to control the safe starting of the low-frequency on-load tap changer, and the candidate switching logic includes: a first switching logic under the target starting condition and a second switching logic under the target starting condition; checking whether the candidate switching logic meets performance requirements, wherein the performance requirements are used to characterize that the first module drives the transfer switch to complete the switching action within a preset time, and the second module drives the tap selector to complete the switching action within a preset time; in response to detecting that the switching logic meets the performance requirements, determining the candidate switching logic as the target switching logic of the low-frequency on-load tap changer. It is easy to notice that, by constructing the first module and the second module, the purpose of being able to more simply perform split control of the low-frequency on-load tap changer is achieved. Furthermore, by respectively constructing corresponding switching logic for the first module and the second module, the generation of complex switching logic for the low-frequency on-load tap changer as a whole is avoided, thereby achieving the purpose of reducing the complexity of generating the switching logic of the low-frequency on-load tap changer, thereby achieving the technical effect of being able to simply generate the switching logic of the low-frequency on-load tap changer, and further solving the technical problem of high complexity in generating the switching logic of the low-frequency on-load tap changer in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 is a flow chart of a method for generating switching logic of a low-frequency on-load tap changer according to an embodiment of the present invention;

[0025] Figure 2 is a structural schematic diagram of a switching logic of an optional low-frequency on-load tap changer according to an embodiment of the present invention;

[0026] Figure 3 is a structural schematic diagram of a switching logic of an optional low-frequency on-load tap changer according to an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of a low-frequency on-load tap changer according to an embodiment of the present invention;

[0028] Figure 5 Schematic diagram of a switching logic generating device for a low-frequency on-load tap changer according to an embodiment of the present invention.

[0029] Figure numerals: 1. switching switch; 2. tap selector; 31. switching drive unit; 32. switching transmission unit; 41. tap drive unit; 42. tap transmission unit; 5. selector groove wheel mechanism; 6. flat gear box; 7. bevel gear box; 8. worm gear box; 9. transmission rod. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] According to an embodiment of the present invention, an embodiment of a method for generating switching logic of a low-frequency on-load tap changer is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0033] Figure 1 is a flow chart of a method for generating switching logic of a low-frequency on-load tap changer according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0034] Step S102, constructing a basic joint debugging logic solution library of the low-frequency on-load tap changer, wherein the basic joint debugging logic solution library includes a first module for carrying and controlling a switching switch in the low-frequency on-load tap changer, a second module for carrying and controlling a tap selector in the low-frequency on-load tap changer, a first switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and a second switching logic of the second module under different starting conditions.

[0035] The above-mentioned basic joint debugging logic solution library can be set in advance by the technicians, and is used to control the low-frequency on-load tap changer more quickly, accurately and simply, wherein the basic joint debugging logic solution library includes: a first module, a second module, a first switching logic and a second switching logic. Among them, the first module is used to control the transfer switch in the low-frequency on-load tap changer, and the second module is used to control the tap selector in the low-frequency on-load tap changer. The first switching logic is the switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and the second switching logic is the switching logic of the second module under the starting condition. Among them, the first switching logic is used to control the transfer switch in the low-frequency on-load tap changer to switch, and the second switching logic is used to control the tap selector in the low-frequency on-load tap changer to switch, so as to achieve the purpose of accurately controlling the low-frequency on-load tap changer. The above-mentioned different starting conditions can be multiple starting conditions set by the technicians based on the actual use requirements of the low-frequency on-load tap changer, wherein the starting conditions may include but are not limited to: starting signals of the transfer switch and the tap selector, voltage deviation, load change, system failure, and remote control instructions. Among them, the low-frequency on-load tap changer can be started when receiving the start signal of the switching switch and the tap selector, or when the output voltage of the transformer deviates from the voltage set by the system beyond the allowable range, or when the load of the transformer changes within a certain range, the operating efficiency and stability of the transformer can be optimized by adjusting the tap ratio, or when a system fault occurs, such as voltage fluctuation or short circuit, the low-frequency on-load tap changer may be started to reduce the impact of the fault on the transformer and the system, or the technician may send instructions through the remote control system to manually start the low-frequency on-load tap changer for adjustment.

[0036] In an optional embodiment, the current technical solution for generating the switching logic of the low-frequency on-load tap changer is to generate the low-frequency on-load tap changer as a whole to achieve the purpose of controlling the switch as a whole. However, the low-frequency on-load tap changer contains multiple complex devices. In order to achieve overall control, the switching logic generation complexity is inevitably high. In order to solve the technical problem of high generation complexity of the switching logic of the low-frequency on-load tap changer in the prior art, this embodiment will first construct a basic joint adjustment logic solution library of the low-frequency on-load tap changer, which is used to change the control mode of the low-frequency on-load tap changer from overall control to split control. The generation complexity of the switching logic under split control is inevitably less than the generation complexity of the switching logic under overall control. For example, this embodiment can first construct a first module, a second module, a first control logic of the first module and a second control logic of the second module. Due to the switching characteristics of the low-frequency on-load tap changer, "long arc extinguishing time, long total switching time, and long transition resistance heating time", the overall switching logic of the low-frequency on-load tap changer adopts the method of split control of the switch and the tap selector. It should be noted that the first module includes a switching timing unit, a switching drive unit, a switching transmission unit and a switching signal feedback unit. The second module includes a tapping timing unit, a tapping drive unit, a tapping transmission unit and a tapping signal feedback unit.

[0037] Among them, building a basic joint adjustment logic solution library for low-frequency on-load tap changers specifically includes the following steps: building the first control logic of the first module, that is, building the control logic of the switching switch of the low-frequency on-load tap changer. For example, the first switching logic can be: the arc extinguishing time of the switching switch is at least 30ms, and the switching time must not be less than 200ms. The drive motor must be able to drive the groove wheel mechanism specially equipped for the low-frequency on-load switch, and the power cannot be cut off in the middle after the action. When the first module controls the switching switch, it should be noted that the arcing time and the inter-gear circulation time during the switching process of the on-load tap changer of 20Hz and below are longer (about 2.5 times longer), and the arc extinguishing time is long, resulting in a long total switching time. The existing quick release mechanism cannot meet the requirements. The transition resistor has a long heating time, and the performance of the driving switching switch element must meet its requirements. Building the second control logic of the second module, that is, building the tap selector control logic of the low-frequency on-load tap changer. For example, the second switching logic can be: the second module controls the tap selector action, and according to the principle of the on-load tap changer "selector contact first action principle", the time control is accurate through signal acquisition, and it cooperates with the switching switch. In terms of performance requirements, the first module and the second module follow the principle of first actuating the tap selector and then actuating the switch to generate a control logic scheme.

[0038] Step S104: based on the target start condition of the low-frequency on-load tap changer, calling the candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library, wherein the target start condition is used to control the safe start of the low-frequency on-load tap changer, and the candidate switching logic includes: a first switching logic under the target start condition and a second switching logic under the target start condition.

[0039] The above target start condition at least includes: the gear position signals of the switching switch and the tap selector read by the first module. The switching gear of the switching switch includes an even-numbered switching gear and an odd-numbered switching gear. The tap selector includes a plurality of continuous switching gears, for example, including but not limited to: 1st gear, 2nd gear, 3rd gear, 4th gear, 5th gear, 6th gear and other continuous switching gears.

[0040] In an optional embodiment, when the target start-up condition of the low-frequency on-load split switch is determined, the switching logic of the low-frequency on-load tap changer can be called from the basic joint debugging logic solution library based on the target start-up condition. For example, when the start-up condition at least includes the start-up signal of the switch and the tap selector, the corresponding candidate switching logic can be determined based on the switching gear corresponding to the start-up signal, so that the switch and the tap selector can be controlled to switch to the corresponding gear based on the candidate switching logic. The candidate switching logic includes: a first switching logic under the target start-up condition and a second switching logic under the target start-up condition.

[0041] It should be noted that in the process of calling the candidate switching logic, it will also be detected whether the called candidate switching logic is correct. If it is determined that the candidate switching logic is not selected correctly, the locking logic can be executed on the switching switch and the tap selector to prohibit the switching switch and the tap selector from starting. If it is determined that the candidate switching logic is selected correctly, proceed to the next step.

[0042] Step S106 , checking whether the candidate switching logic meets the performance requirement, wherein the performance requirement is used to indicate that the first module drives the switch to complete the switching action within a preset time, and the second module drives the tap selector to complete the switching action within a preset time.

[0043] The above-mentioned preset time can be set in advance by the user. The specific time is not limited in this embodiment, and the technicians can set it according to actual needs.

[0044] In an optional embodiment, when the candidate switching logic is called, first, it can be checked whether the candidate switching logic meets the performance requirements. For example, first, an experimental condition can be constructed, wherein the experimental condition is used to control the synchronization of the start signals of the transfer switch and the tap selector. Secondly, based on the experimental condition, the low-frequency on-load tap changer can be controlled to operate to a preset number of experimental times. When the number of operations of the low-frequency on-load tap changer reaches the preset number of experimental times, it can be determined whether the odd and even contact switching of the transfer switch can be turned on, whether the contact switching of the tap selector can be turned on, whether the arc-off time of the low-frequency on-load tap changer is greater than or equal to the first preset time, and whether the switching time of a single switching of the transfer switch is greater than or equal to the second preset time, and the program of the transfer switch is detected to determine whether the switching logic meets the performance requirements. Among them, the first preset time is less than the second preset time, and the specific time value is not limited in this embodiment, and the technician can set it according to actual needs.

[0045] Step S108 , in response to detecting that the switching logic meets the performance requirement, determining the candidate switching logic as the target switching logic of the low-frequency on-load tap changer.

[0046] In an optional embodiment, in response to the switching of odd and even contacts of the switching switch being able to be turned on, the switching of contacts of the tap selector being able to be turned on, the arcing time of the low-frequency on-load tap changer being greater than or equal to the first preset time, and the switching time of a single switching of the switching switch being greater than or equal to the second preset time, and the program detection of the switching switch being normal, it can be determined that the switching logic meets the performance requirements. When it is detected that the switching logic meets the performance requirements, the switching logic can be determined to be the target switching logic of the low-frequency on-load tap changer.

[0047] In an embodiment of the present invention, a basic joint debugging logic scheme library of a low-frequency on-load tap changer is constructed, wherein the basic joint debugging logic scheme library includes a first module for carrying control of a transfer switch in the low-frequency on-load tap changer, a second module for carrying control of a tap selector in the low-frequency on-load tap changer, a first switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and a second switching logic of the second module under different starting conditions; based on a target starting condition of the low-frequency on-load tap changer, a candidate switching logic of the low-frequency on-load tap changer is called from the basic joint debugging logic scheme library, wherein the target starting condition is used to control the safe starting of the low-frequency on-load tap changer, and the candidate switching logic includes: a first switching logic under the target starting condition and a second switching logic under the target starting condition; checking whether the candidate switching logic meets performance requirements, wherein the performance requirements are used to characterize that the first module drives the transfer switch to complete the switching action within a preset time, and the second module drives the tap selector to complete the switching action within a preset time; in response to detecting that the switching logic meets the performance requirements, determining the candidate switching logic as the target switching logic of the low-frequency on-load tap changer. It is easy to notice that, by constructing the first module and the second module, the purpose of being able to more simply perform split control of the low-frequency on-load tap changer is achieved. Furthermore, by respectively constructing corresponding switching logic for the first module and the second module, the generation of complex switching logic for the low-frequency on-load tap changer as a whole is avoided, thereby achieving the purpose of reducing the complexity of generating the switching logic of the low-frequency on-load tap changer, thereby achieving the technical effect of being able to simply generate the switching logic of the low-frequency on-load tap changer, and further solving the technical problem of high complexity in generating the switching logic of the low-frequency on-load tap changer in the related art.

[0048] Optionally, checking whether the switching logic meets the performance requirements includes: controlling the start signal synchronization of the transfer switch and the tap selector; based on the test conditions, controlling the operation times of the low-frequency on-load tap changer to be a preset test times; in response to the operation times of the low-frequency on-load tap changer reaching the preset test times, determining whether the odd-even contact switching of the transfer switch can be turned on, whether the contact switching of the tap selector can be turned on, whether the arc extinction time of the low-frequency on-load tap changer is greater than or equal to a first preset time, whether the switching time of a single switching of the transfer switch is greater than or equal to a second preset time, and detecting the program of the transfer switch, wherein the first preset time is less than the second preset time ; In response to the switching of the odd and even contacts of the switching switch being able to conduct, the switching of the contacts of the tap selector being able to conduct, the arc-off time of the low-frequency on-load tap changer being greater than or equal to the first preset time, the switching time of a single switching of the switching switch being greater than or equal to the second preset time, and there being no abnormality in the program of the switching switch, it is determined that the switching logic meets the performance requirements; in response to the switching of the odd and even contacts of the switching switch being unable to conduct, or the switching of the contacts of the tap selector being unable to conduct, or the arc-off time of the low-frequency on-load tap changer being less than the first preset time, or the switching time of a single switching of the switching switch being less than the second preset time, or there being an abnormality in the program of the switching switch, it is determined that the switching logic does not meet the performance requirements.

[0049] The above-mentioned preset number of experiments can be set in advance by a technician. The specific value is not limited in this embodiment, and the technician can set the specific value according to actual experimental requirements.

[0050] In an optional embodiment, the start signals of the switching switch and the tap selector can be controlled to be synchronized first, that is, the experimental conditions can be constructed first. For example, synchronous joint debugging can be carried out first, that is, during construction, input control is performed at two locations at the same time, that is, the first module and the second module are used at the same time, and the switching timing unit and the tap timing unit are linked to each other. Secondly, based on the experimental conditions, the switching timing unit and the tap timing unit in the low-frequency on-load tap changer can be controlled to mechanically operate to a preset number of experiments (for example, it can be 2000 times, but not limited to this). When the switching timing unit and the tap timing unit in the low-frequency on-load tap changer mechanically operate to the preset number of experiments, it can be determined whether the odd and even contact switching of the switching switch can be turned on, whether the contact switching of the tap selector can be turned on, whether the arc extinction time of the low-frequency on-load tap changer is greater than or equal to the first preset time, and whether the switching time of a single switching of the switching switch is greater than or equal to the second preset time, and the program of the switching switch is detected. After determining the switching switch When the odd-even contact switching can be turned on, the contact switching of the tap selector can be turned on, the arc-off time of the low-frequency on-load tap changer is greater than or equal to the first preset time, and the switching time of a single switching of the switch is greater than or equal to the second preset time, and there is no abnormality in the program of the switch, it can be determined that the switching logic meets the performance requirements; when the odd-even contact switching of the switch cannot be turned on, or the contact switching of the tap selector cannot be turned on, or the arc-off time of the low-frequency on-load tap changer is less than the first preset time, or the switching time of a single switching of the switch is less than the second preset time, or the program of the switch is abnormal, it can be determined that the switching logic does not meet the performance requirements. Among them, the arc-off time is at least 30ms (i.e., the first preset time), and the switching time shall not be less than 200ms (i.e., the second preset time).

[0051] Optionally, controlling the start signals of the switching switch and the tap selector to be synchronized includes: controlling the electric mechanism of the tap selector to switch to a first start gear position, wherein the electric mechanism has a plurality of continuous start gear positions; and controlling the initial position of the switching switch to be at a second start gear position corresponding to the first start gear position through the head motor.

[0052] Among them, the first starting gear switching switch has an odd starting gear and an even starting gear. In response to the first starting gear being an odd starting gear, the second starting gear is determined to be an odd starting gear. In response to the first starting gear being the even starting gear, the second starting gear is determined to be the even starting gear.

[0053] In an optional embodiment, the electric mechanism of the tap selector can be first controlled to switch to the first starting gear, and secondly, the initial position of the switch can be controlled by the head motor to be in the second starting gear corresponding to the first starting gear. For example, when the first starting gear of the electric mechanism is gear 1, the initial position of the switch can be controlled to be in the odd starting gear corresponding to the first starting gear, and when the first starting gear of the electric mechanism is gear 6, the initial position of the switch can be controlled to be in the even starting gear corresponding to the first starting gear.

[0054] Optionally, the method further includes: in response to the first starting gear position of the tap selector not corresponding to the second starting gear position of the switching switch, controlling the electric mechanism of the tap selector to be in a stopped state; based on the gear adjustment signal, controlling the second starting gear position of the switching switch through the head motor to correspond to the first starting gear position of the tap selector.

[0055] In an optional embodiment, when it is determined that the first starting gear of the tap selector does not correspond to the second starting gear of the switch, the electric mechanism of the tap selector can be controlled to be in a stopped state first, and secondly, based on the received gear adjustment signal, the second starting gear of the switch can be controlled by the head motor to correspond to the first starting gear of the tap selector. For example, when it is determined that the switching gear of the electric mechanism is gear 1 and the gear position of the switch is an even-numbered starting gear, the electric mechanism of the tap selector can be controlled to be in a stopped state, and secondly, based on the received gear adjustment signal, the second starting gear of the switch can be controlled by the head motor to switch from an even-numbered starting gear to an odd-numbered starting gear, and at this time, the second starting gear of the switch corresponds to the first starting gear of the tap selector.

[0056] Optionally, the method further includes: in response to the end of operation of the electric mechanism, judging whether the first module can drive the switching switch to complete the switching action within a preset time, and whether the second module can complete the switching action of the tap selector within a preset time, wherein the first module at least includes a head motor and the second module at least includes a electric mechanism; in response to judging that the first module cannot drive the switching switch to complete the switching action within the preset time, or the second module cannot drive the tap selector to complete the switching action within the preset time, determining that the switching logic does not meet the performance requirements; in response to judging that the first module can drive the switching switch to complete the switching action within the preset time, and the second module can drive the tap selector to complete the switching action within the preset time, determining that the switching logic meets the performance requirements.

[0057] In an optional embodiment, when the operation of the electric mechanism ends, it can be determined whether the first module can drive the transfer switch to complete the switching action within the preset time, and whether the second module can drive the tap selector to complete the switching action within the preset time, that is, it can be determined whether the first module and the second module meet the performance requirements. When it is determined that the first module cannot drive the transfer switch to complete the switching action within the preset time, or the second module cannot drive the tap selector to complete the switching action within the preset time, it can be determined that the switching logic does not meet the performance requirements. When it is determined that the first module can drive the transfer switch to complete the switching action within the preset time, and the second module can drive the tap selector to complete the switching action within the preset time, it can be determined that the switching logic meets the performance requirements.

[0058] Optionally, the candidate switching logic does not meet the performance requirement, and the first module or the second module is reselected.

[0059] In an optional embodiment, when it is determined that the candidate switching logic does not meet the performance requirements, the first module or the second module can be reselected so that the first switching logic corresponding to the reselected first module or the second switching logic corresponding to the second module can be called to ensure accurate and rapid control of the low-frequency on-load tap changer.

[0060] Optionally, the method further includes: in response to detecting that the candidate switching logic does not meet the performance requirements, repeatedly executing the steps of calling the candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library based on the target start-up conditions of the low-frequency on-load tap changer, and checking whether the candidate switching logic meets the performance requirements, until the re-selected switching logic meets the performance requirements.

[0061] In an optional embodiment, when it is detected that the switching logic does not meet the performance requirements, the steps of calling the candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library based on the target start-up condition of the low-frequency on-load tap changer, and checking whether the candidate switching logic meets the performance requirements can be repeatedly performed until the re-selected switching logic meets the performance requirements.

[0062] Optionally, the method also includes: constructing a first control logic of the first module, wherein the first control logic at least includes: the arc extinction time of the low-frequency on-load tap changer is greater than or equal to a third preset time, the switching time of a single switching of the switching switch is greater than or equal to a second preset time, the driving motor can drive a groove wheel mechanism matching the low-frequency on-load switch, and the driving motor cannot be powered off after operation, and the third preset time is greater than the second preset time; constructing a second control logic of the second module, wherein the second control logic at least includes: according to the working principle of the low-frequency on-load tap changer, time control is realized through signal acquisition, and it cooperates with the switching switch, and the working principle is switching first and then selecting.

[0063] The third preset time mentioned above can be set in advance by a technician, and the specific value is not limited in this embodiment.

[0064] In an optional embodiment, firstly, a first control logic of a first module may be constructed, wherein the first control logic at least includes: the arc extinction time of a low-frequency on-load tap changer is greater than or equal to a third preset time, the switching time of a single switching of the switching switch is greater than or equal to a second preset time, the driving motor is able to drive a groove wheel mechanism matching the low-frequency on-load switch, and the driving motor cannot be powered off after being actuated, the driving motor must be able to drive a groove wheel mechanism matching the low-frequency on-load switch, and the driving motor cannot be powered off after being actuated, and the third preset time is greater than the second preset time; a second control logic of a second module may be constructed, wherein the second control logic at least includes: according to the working principle of the low-frequency on-load tap changer, time control is realized through signal acquisition, and the switching switch is coordinated and linked, and the working principle is switching first and then selecting.

[0065] Figure 2 is a structural schematic diagram of a switching logic of an optional low-frequency on-load tap changer according to an embodiment of the present invention, such as Figure 2 As shown, the switching drive unit 31 is a head motor, and the switching signal feedback unit ( Figure 3 (not shown) is a micro switch installed in the transfer switch 1, without a switching transmission unit. The head motor is directly installed on the top cover of the transfer switch 1 to drive the switching groove wheel mechanism in the head structure of the transfer switch; the micro switch is installed on the switching groove wheel mechanism, and the micro switch is triggered by the action of the switching groove wheel mechanism to determine the odd and even signals. The second module is selected to carry the control tap selector 2.

[0066] refer to Figure 2 The tap drive unit 41 is a conventional electric mechanism of an on-load tap changer; the tap transmission unit 42 includes a plurality of transmission rods 9, a bevel gear box 7 and a worm gear box 8. The worm gear box 8 is mounted on the flange at the top of the switch 1. The lower output end of the worm gear box 8 is directly connected to the selector groove wheel mechanism 5 between the switch 1 and the tap selector 2 through the transmission rod 9, thereby driving the tap selector 2; the tap signal feedback unit ( Figure 2 ) is a gear indicator plate, which is integrally arranged with the worm gear box 8.

[0067] Verify that the selected low-frequency on-load tap-changer switching logic meets the performance requirements.

[0068] First, synchronous joint adjustment: linkage control based on the switching timing unit and the tapping timing. Before the switching switch is actuated, the built-in program of the electric mechanism determines the starting conditions for the single-to-double switching of the head motor-driven switching switch (the same applies to double-to-single):

[0069] 1. The electric mechanism of the tap selector is switched into position.

[0070] 2. The electric mechanism of the tap selector is in an even-numbered position.

[0071] 3. The initial position of the switch is at the even side. When the electric mechanism and the switch are not in the even or odd position, the head is started directly after receiving the gear adjustment signal, and the electric mechanism does not move. The switch is now in the odd position.

[0072] 4. The operation of the electric mechanism ends (process 4.5s).

[0073] After the conditions are met, the program jumps to start the head motor, and it is difficult for the head motor to directly drive the switch body. After analysis, the head motor installed on the top of the switch is small in size and power. The torque of the head motor is too small, resulting in the groove wheel mechanism on the top of the switch being unable to drive the switch to operate. Figure 2 If the performance of the first module does not meet the standard, the switching logic of the low-frequency on-load tap changer can be re-selected from the basic joint debugging logic solution library of the low-frequency on-load tap changer, and the first module can be re-selected to carry out the control of the switching switch.

[0074] Figure 3 is a structural schematic diagram of a switching logic of an optional low-frequency on-load tap changer according to an embodiment of the present invention, such as Figure 3 As shown, the first module includes a switching transmission unit 32, which includes a transmission rod 9 and a flat gear box 6 for transmission steering. A high-power head motor is selected and the head motor is set outside. The flat gear box 6 is fixed on the top of the switching switch 1 and linked to the switching groove wheel mechanism ( Figure 3 The head motor drives the switch 1 to operate through the transmission rod 9 and the flat gear box (ie, the reduction box) 6. Check whether the reselected low-frequency on-load tap changer switching logic meets the performance requirements.

[0075] First, synchronous joint adjustment: before the switch is actuated, the built-in program of the electric mechanism determines the starting conditions for the single-to-double switching of the head motor drive switch (the same applies to double-to-single):

[0076] 1. The electric mechanism is in place.

[0077] 2. The electric mechanism is in an even-numbered gear position.

[0078] 3. The initial position of the switch is at the even side. When the electric mechanism and the switch are not in the even or odd position, the head is started directly after receiving the gear adjustment signal, and the electric mechanism does not move. The switch is now in the odd position.

[0079] 4. The operation of the electric mechanism ends (process 4.5s).

[0080] After the conditions are met, the program jumps to start the head motor, and after transmission through the flat gear box, the drive of the transfer switch body is normal. The groove wheel mechanism on the top of the transfer switch can drive the transfer switch to operate, and the switching time of the transfer switch is normal. Secondly, repeat the test: the machine runs 2000 times, the odd and even numbers of the transfer switch are switched to the right position, and the tap selector contacts are switched to the right position; the transfer switch program is tested, the arc extinguishing time is at least 30ms, and the switching time shall not be less than 200ms.

[0081] final, Figure 3 The switching logic performance of the low-frequency on-load tap changer meets the standard, and the final switching logic of the low-frequency on-load tap changer is obtained.

[0082] The present invention provides a switching logic generation method for a low-frequency on-load tap changer, which is simple, easy to evaluate, and highly efficient. It not only meets the long switching time characteristics of low-frequency on-load tap changers, but also achieves joint control of two locations, thus realizing independent design and innovation of switching logic in the manufacturing of low-frequency on-load tap changers.

[0083] According to another aspect of the embodiment of the present invention, a low-frequency on-load tap changer is provided. Figure 4 is a schematic diagram of a low-frequency on-load tap changer according to an embodiment of the present invention, such as Figure 4 As shown, the low-frequency on-load tap changer 40 includes: a first module 42 and a second module 44. Figure 4 As shown, the second module 44 is connected to the first module 42 in communication, such as Figure 4 As shown by the solid line in .

[0084] Among them, Figure 4 As shown, the first module 42 includes: a switching timing unit ( Figure 4 Not shown), switching drive unit ( Figure 4 Not shown), switching transmission unit ( Figure 4 ) and the switching signal feedback unit ( Figure 4 The second module 44 includes a tap timing unit ( Figure 4 Not shown), tap drive unit ( Figure 4 Not shown), tap transmission unit ( Figure 4 Not shown) and the tap signal feedback unit ( Figure 4 not shown).

[0085] Optionally, the tap drive unit is an electric mechanism; the tap transmission unit includes a plurality of transmission rods, a bevel gear box and a worm gear box; and the tap signal feedback unit is a gear position indicator plate.

[0086] In an optional embodiment, the tap drive unit is an electric mechanism; the tap transmission unit includes multiple transmission rods, a bevel gear box and a worm gear box, and the lower output end of the worm gear box is directly connected to the selector groove wheel mechanism between the switching switch and the tap selector through the transmission rod to drive the tap selector; the tap signal feedback unit is a gear indicator disk.

[0087] Optionally, the switching drive unit is a head motor, wherein the switching drive unit is used to convert the received electrical signal into angular displacement or angular velocity on the motor shaft, and output the angular displacement or angular velocity, and the rotation speed decreases uniformly with the increase of torque; the switching transmission unit includes a transmission rod and a flat gear box for transmission steering.

[0088] In an optional embodiment, the switching drive unit is a head motor without a switching transmission unit. The head motor is directly mounted on the top cover of the switching switch to drive the switching switch head; the switching transmission unit includes a transmission rod and a flat gear box for transmission steering, the flat gear box is fixed on the top of the switching switch, and is linked to the switching groove wheel mechanism on the top of the switching switch, and the head motor drives the switching switch to operate through the transmission rod and the flat gear box (i.e., the reduction box); the switching drive unit is used to convert the received electrical signal into an angular displacement or angular velocity on the motor shaft, and output the angular displacement or angular velocity, and the rotation speed decreases uniformly with the increase of torque.

[0089] According to an embodiment of the present invention, there is also provided an embodiment of a switching logic generating device for a low-frequency on-load tap changer. It should be noted that the device can be used to execute the above-mentioned switching logic generating method for a low-frequency on-load tap changer. Figure 5 is a schematic diagram of a switching logic generating device for a low-frequency on-load tap changer according to an embodiment of the present invention, such as Figure 5As shown, the device includes: a construction module 52, which is used to construct a basic joint debugging logic solution library of a low-frequency on-load tap changer, wherein the basic joint debugging logic solution library includes a first module for carrying control of a switching switch in the low-frequency on-load tap changer, a second module for carrying control of a tap selector in the low-frequency on-load tap changer, a first switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and a second switching logic of the second module under different starting conditions; a calling module 54, which is used to call a candidate starting condition of the low-frequency on-load tap changer from the basic joint debugging logic solution library based on the target starting condition of the low-frequency on-load tap changer The target start condition is used to control the safe start of the low-frequency on-load tap changer, and the candidate switching logic includes: a first switching logic under the target start condition and a second switching logic under the target start condition; a verification module 56 is used to verify whether the candidate switching logic meets the performance requirements, wherein the performance requirements are used to characterize that the first module drives the transfer switch to complete the switching action within a preset time, and the second module drives the tap selector to complete the switching action within a preset time; a determination module 58 is used to determine that the candidate switching logic is the target switching logic of the low-frequency on-load tap changer in response to detecting that the switching logic meets the performance requirements.

[0090] Optionally, the inspection module includes: a first control unit, used to control the synchronization of the start signals of the transfer switch and the tap selector; a second control unit, used to control the operation times of the low-frequency on-load tap changer to be a preset experimental number based on the test conditions; a first determination unit, used to determine whether the odd-even contact switching of the transfer switch can be turned on, whether the contact switching of the tap selector can be turned on, whether the arc-off time of the low-frequency on-load tap changer is greater than or equal to the first preset time, whether the switching time of a single switching of the transfer switch is greater than or equal to the second preset time in response to the operation times of the low-frequency on-load tap changer reaching the preset experimental number, and detect the program of the transfer switch, wherein the first preset time is less than the second preset time; The second determining unit is used to determine that the switching logic meets the performance requirements in response to the switching of the odd and even number contacts of the switching switch being able to conduct, the switching of the contacts of the tap selector being able to conduct, the arc-off time of the low-frequency on-load tap changer being greater than or equal to the first preset time, the switching time of a single switching of the switching switch being greater than or equal to the second preset time, and there is no abnormality in the program of the switching switch; the third determining unit is used to determine that the switching logic does not meet the performance requirements in response to the switching of the odd and even number contacts of the switching switch being unable to conduct, the switching of the contacts of the tap selector being unable to conduct, the arc-off time of the low-frequency on-load tap changer being less than the first preset time, the switching time of a single switching of the switching switch being less than the second preset time, or there is an abnormality in the program of the switching switch.

[0091] Optionally, the first control unit includes: a first control subunit, used to control the electric mechanism of the tap selector to switch to a first starting gear, wherein the electric mechanism has multiple continuous starting gears; a second control subunit, used to control the initial position of the switching switch to be in a second starting gear corresponding to the first starting gear through the head motor.

[0092] Optionally, the first control unit also includes: a third control subunit, used to control the electric mechanism of the tap selector to be in a stopped state in response to the first starting gear position of the tap selector not corresponding to the second starting gear position of the switching switch; and a fourth control subunit, used to control the second starting gear position of the switching switch to correspond to the first starting gear position of the tap selector through the head motor based on the gear adjustment signal.

[0093] Optionally, the inspection module also includes: a first judgment unit, used to judge whether the first module can drive the switching switch to complete the switching action within a preset time in response to the end of the operation of the electric mechanism, and whether the second module can complete the switching action of the tap selector within the preset time, wherein the first module at least includes a head motor and the second module at least includes a electric mechanism; a fourth determination unit, used to determine that the switching logic does not meet the performance requirements in response to judging that the first module cannot drive the switching switch to complete the switching action within the preset time, or the second module cannot drive the tap selector to complete the switching action within the preset time; a fifth determination unit, used to determine that the switching logic meets the performance requirements in response to judging that the first module can drive the switching switch to complete the switching action within the preset time, and the second module can drive the tap selector to complete the switching action within the preset time.

[0094] Optionally, in response to the candidate switching logic not satisfying the performance requirement, the first module or the second module is reselected.

[0095] Optionally, the device also includes: a repetition module, for, in response to detecting that the candidate switching logic does not meet the performance requirements, repeatedly executing the steps of calling the candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library based on the target start-up conditions of the low-frequency on-load tap changer, and checking whether the candidate switching logic meets the performance requirements, until the re-selected switching logic meets the performance requirements.

[0096] Optionally, the construction module includes: a first construction unit, used to construct a first control logic of the first module, wherein the first control logic at least includes: the arc extinction time of the low-frequency on-load tap changer is greater than or equal to a third preset time, the switching time of a single switching of the switching switch is greater than or equal to a second preset time, the driving motor can drive a groove wheel mechanism matching the low-frequency on-load switch, and the driving motor cannot be powered off after actuation, and the third preset time is greater than the second preset time; a second construction unit, used to construct a second control logic of the second module, wherein the second control logic at least includes: according to the working principle of the low-frequency on-load tap changer, time control is realized through signal acquisition, and it cooperates with the switching switch, and the working principle is switching first and then selecting.

[0097] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention when running.

[0098] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0099] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0100] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0101] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0102] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0103] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0104] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0105] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0106] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0107] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for generating switching logic of a low-frequency on-load tap changer, characterized in that: include: Constructing a basic joint debugging logic solution library of the low-frequency on-load tap changer, wherein the basic joint debugging logic solution library includes a first module for carrying control of a switching switch in the low-frequency on-load tap changer, a second module for carrying control of a tap selector in the low-frequency on-load tap changer, a first switching logic of the first module under different starting conditions of the low-frequency on-load tap changer, and a second switching logic of the second module under the different starting conditions; Based on the target start-up condition of the low-frequency on-load tap changer, calling the candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library, wherein the target start-up condition is used to control the safe start-up of the low-frequency on-load tap changer, and the candidate switching logic includes: a first switching logic under the target start-up condition and a second switching logic under the target start-up condition; Checking whether the candidate switching logic meets the performance requirement, wherein the performance requirement is used to indicate that the first module drives the switch to complete the switching action within a preset time, and the second module drives the tap selector to complete the switching action within the preset time; In response to detecting that the switching logic meets the performance requirement, the candidate switching logic is determined as the target switching logic of the low-frequency on-load tap changer.

2. The method according to claim 1, characterized in that Checking whether the switching logic meets the performance requirements includes: Controlling the synchronization of the start signals of the switch and the tap selector; Based on the test conditions, controlling the operation times of the low-frequency on-load tap changer to be a preset test times; In response to the operation number of the low-frequency on-load tap changer reaching the preset test number, determining whether the odd-even contact switching of the transfer switch can be turned on, whether the contact switching of the tap selector can be turned on, whether the arc-off time of the low-frequency on-load tap changer is greater than or equal to a first preset time, whether the switching time of a single switching of the transfer switch is greater than or equal to a second preset time, and detecting the program of the transfer switch, wherein the first preset time is less than the second preset time; In response to the switching of the odd and even contacts of the transfer switch being able to conduct, the switching of the contacts of the tap selector being able to conduct, the arc-off time of the low-frequency on-load tap changer being greater than or equal to a first preset time, the switching time of a single switching of the transfer switch being greater than or equal to a second preset time, and the program of the transfer switch being normal, determining that the switching logic meets the performance requirement; In response to the fact that the odd-even contacts of the transfer switch cannot be turned on, or the contacts of the tap selector cannot be turned on, or the arc extinction time of the low-frequency on-load tap changer is less than the first preset time, or the switching time of a single switching of the transfer switch is less than the second preset time, or an abnormality occurs in the program of the transfer switch, it is determined that the switching logic does not meet the performance requirement.

3. The method according to claim 2, characterized in that Controlling the synchronization of the start signals of the transfer switch and the tap selector, comprising: Controlling the electric mechanism of the tap selector to switch to a first starting gear position, wherein the electric mechanism has a plurality of continuous starting gear positions; The initial position of the switch is controlled by the head motor to be in a second starting gear position corresponding to the first starting gear position.

4. The method according to claim 3, characterized in that The method further comprises: In response to the first starting gear position of the tap selector not corresponding to the second starting gear position of the switch, controlling the electric mechanism of the tap selector to be in a stopped state; Based on the gear adjustment signal, the second starting gear position of the switching switch is controlled by the head motor, corresponding to the first starting gear position of the tap selector.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: In response to the end of the operation of the electric mechanism, judging whether the first module can drive the switch to complete the switching action within the preset time, and whether the second module can complete the switching action of the tap selector within the preset time, wherein the first module at least includes the head motor, and the second module at least includes the electric mechanism; In response to determining that the first module cannot drive the switch to complete the switching action within the preset time, or the second module cannot drive the tap selector to complete the switching action within the preset time, determining that the switching logic does not meet the performance requirement; In response to determining that the first module can drive the switch to complete the switching action within the preset time, and the second module can drive the tap selector to complete the switching action within the preset time, it is determined that the switching logic meets the performance requirement.

6. The method according to any one of claims 1 to 4, characterized in that: In response to the candidate switching logic not satisfying the performance requirement, reselecting the first module or the second module.

7. The method according to claim 1, characterized in that The method further comprises: In response to detecting that the candidate switching logic does not meet the performance requirement, the steps of calling the candidate switching logic of the low-frequency on-load tap changer from the basic joint debugging logic solution library based on the target startup condition of the low-frequency on-load tap changer, and checking whether the candidate switching logic meets the performance requirement are repeatedly executed until the re-selected switching logic meets the performance requirement.

8. The method according to claim 1, characterized in that The method further comprises: Constructing a first control logic of the first module, wherein the first control logic at least includes: the arc extinction time of the low-frequency on-load tap changer is greater than or equal to a third preset time, the switching time of a single switching of the switch is greater than or equal to a second preset time, the drive motor can drive a groove wheel mechanism matched with the low-frequency on-load switch, and the drive motor cannot be powered off midway after actuation, and the third preset time is greater than the second preset time; Construct a second control logic of the second module, wherein the second control logic at least includes: according to the working principle of the low-frequency on-load tap changer, time control is realized through signal acquisition, and linkage is coordinated with the switching switch, and the working principle is switching first and then selecting.

9. A low-frequency on-load tap changer, characterized in that: include: The first module includes: a switching timing unit, a switching driving unit, a switching transmission unit and a switching signal feedback unit; The second module is communicatively connected with the first module, wherein the second module comprises a tap timing unit, a tap driving unit, a tap transmission unit and a tap signal feedback unit.

10. The low-frequency on-load tap changer according to claim 9, characterized in that: The tap drive unit is an electric mechanism; The tap transmission unit includes a plurality of transmission rods, a bevel gear box and a reduction box; The tap signal feedback unit is a gear position indicator plate.

11. The low-frequency on-load tap changer according to claim 9, characterized in that: The switching drive unit is a head motor, wherein the switching drive unit is used to convert the received electrical signal into an angular displacement or angular velocity on the motor shaft; The switching transmission unit includes a transmission rod and a reduction box for transmission steering.

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