PT signal conversion method, system and equipment for realizing compatibility of new and old controllers of pole-mounted automatic switch and medium

Abstract

The invention discloses a PT signal conversion method, system, equipment and medium for realizing compatibility of a new controller and an old controller of a pole-mounted automatic switch, and belongs to the technical field of power distribution network automation, and the method comprises the steps: obtaining a second signal definition set of a pole-mounted switch PT interface of a first technical specification and a second technical specification; establishing an electrical signal mapping relation between the controller interface and the PT interface based on the first signal definition set and the second signal definition set; constructing a conversion cable according to the mapping relation; the controller and the pole-mounted switch are connected through the conversion cable, and PT signal compatible communication between the controller and the pole-mounted switch is completed according to the electrical signal mapping relation. By establishing the electrical mapping relation based on signal function analysis, the problem that new and old equipment is incompatible due to the difference between the number of interface cores and signal definition is solved, and interconnection and intercommunication of different versions of equipment are achieved. By reliably connecting the shielding ground pin with the connector shell, effective single-point grounding is formed, and the anti-interference capability of signals in a complex electromagnetic environment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power distribution network automation, and in particular to a PT signal conversion method, system, device and medium for realizing compatibility of new and old controllers of pole-mounted automation switches. BACKGROUND

[0002] With the continuous improvement of the automation level of the power distribution network, as a key device, the technical specifications of the 10kV pole-mounted automation switch are also continuously iterated and updated. At present, a large number of pole-mounted switches and controllers in the power grid comply with the early technical specifications (such as the 2018 version), and the devices comply with the new standards (such as the 2021 version). There are significant differences between the new and old technical specifications in the physical structure (such as the 5-core and 10-core interfaces) and the electrical signal definition of the PT interface, which leads to the fact that the pole-mounted switch complying with the new specification cannot be directly compatible with the existing old controller.

[0003] This compatibility fault has caused serious problems in actual operation and maintenance: when the new switch is replaced in the field, the original old controller cannot be used due to the mismatch of the interface and the protocol, resulting in waste of idle equipment and increased operation and maintenance costs. If the controller or switch is reformed on a large scale to solve the compatibility, it will be technically complex, costly and long in implementation period. Therefore, there is an urgent need for a simple, efficient and low-cost solution to realize seamless connection between new and old devices, activate existing assets and improve operation and maintenance efficiency. SUMMARY

[0004] In view of the above problems, the present application is proposed.

[0005] Therefore, the technical problem solved by the present application is: how to overcome the mismatch of the physical structure and the electrical signal definition of the PT interface caused by the iteration of the new and old technical specifications of the pole-mounted automation switch, so as to provide a low-cost, high-reliability and easy-to-implement solution to realize seamless compatibility and interconnection between the existing old controller and the new specification pole-mounted switch.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a PT signal conversion method for realizing compatibility of new and old controllers of pole-mounted automation switches, comprising, respectively acquiring a first signal definition set based on a controller interface of a first technical specification, and a second signal definition set based on a PT interface of a pole-mounted switch of a second technical specification; based on the first signal definition set and the second signal definition set, establishing an electrical signal mapping relationship between the controller interface and the PT interface; according to the electrical signal mapping relationship, a conversion cable is constructed; one end of the conversion cable is configured with a first connector matched with the controller interface, and the other end is configured with a second connector matched with the PT interface; By converting the cable connection controller and the pole switch, the PT signal compatible communication between the two is completed according to the electrical signal mapping relationship.

[0007] As a preferred scheme of the PT signal conversion method for realizing the compatibility of the new and old controllers of the pole automatic switch, wherein: the first signal definition set based on the controller interface of the first technical specification and the second signal definition set based on the PT interface of the pole switch of the second technical specification include, By analyzing the first technical specification, the voltage signals and ground signals defined by each pin in the controller interface are obtained; By analyzing the second technical specification, the voltage signals, ground signals and shield layer ground signals defined by each pin in the PT interface of the pole switch are obtained; Based on the principle of functional consistency, all signals corresponding to each other in electrical function in the two signal definition sets are identified.

[0008] As a preferred scheme of the PT signal conversion method for realizing the compatibility of the new and old controllers of the pole automatic switch, wherein: the electrical signal mapping relationship between the controller interface and the PT interface is established based on the first signal definition set and the second signal definition set, including, The voltage and ground signal pins defined in the controller interface are matched and connected with the voltage and ground signal pins corresponding in function in the PT interface; For the shield layer ground signal unique to the PT interface, the metal shell of the corresponding connector is electrically connected inside the conversion cable; According to the corresponding relationship, a complete and clear electrical signal connection table is formed.

[0009] The present application not only realizes the precise functional connection of the core voltage and ground signal, but also solves the anti-interference of signal transmission by connecting the shield ground of the new interface inside the cable with the shell, so that the quality of the converted signal is not affected by the complex electromagnetic environment on site, and the accuracy of the controller acquisition and the stability of the system operation are ensured.

[0010] As a preferred scheme of the PT signal conversion method for realizing the compatibility of the new and old controllers of the pole automatic switch, wherein: a conversion cable is constructed according to the electrical signal mapping relationship, including, A first industrial-grade connector physically matched with the controller interface and a second industrial-grade connector physically matched with the PT interface of the pole switch are selected; According to the electrical signal connection table, the corresponding functional pins of the two connectors are correctly welded or crimped using a shielded cable; The cable defined as shielded and grounded is electrically connected to the metal shell of the corresponding connector to complete the assembly of the entire conversion cable.

[0011] As a preferred embodiment of the PT signal conversion method for achieving compatibility between old and new controllers of pole-mounted automatic switches as described in this invention, the conversion cable includes: One end of the conversion cable is equipped with a first connector that matches the controller interface, and the other end is equipped with a second connector that matches the PT interface; The conversion cable length is not less than the set parameters, and the internal conductors include a shielding layer.

[0012] This invention adds pre- and post-power-on testing steps. Through a pilot-before-power-on verification process, it ensures accurate and successful on-the-spot connection every time. This eliminates equipment malfunctions or damage caused by poor contact or incorrect wiring, improving the reliability and safety of on-site operations and enabling plug-and-play functionality.

[0013] As a preferred embodiment of the PT signal conversion method for achieving compatibility between old and new controllers of pole-mounted automatic switches according to the present invention, the step of connecting the controller and the pole-mounted switch via a conversion cable and completing PT signal compatibility communication between the two based on the electrical signal mapping relationship includes: When the equipment is energized, the voltage signal of the pole-mounted switch PT interface is transmitted to the controller interface through the conversion cable according to the electrical signal connection lookup table; The controller successfully received and correctly interpreted the phase voltage and zero-sequence voltage signals from the pole-mounted switch; Based on the accurately acquired PT signals, the controller can perform line monitoring, protection, and automated control functions normally.

[0014] As a preferred embodiment of the PT signal conversion method for achieving compatibility between old and new controllers of pole-mounted automatic switches according to the present invention, the step of connecting the controller and the pole-mounted switch via a conversion cable and completing PT signal compatibility communication between the two based on the electrical signal mapping relationship further includes: Test the communication link established through the conversion cable to verify whether it meets the preset PT signal transmission requirements; Verify that all pins connected based on mapping relationships have good conductivity; With the controller and pole-mounted switch powered on, verify that the controller can correctly acquire the PT voltage signal of the pole-mounted switch.

[0015] This invention provides a PT signal conversion system that enables compatibility between new and old controllers for pole-mounted automatic switches.

[0016] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a PT signal conversion system that enables compatibility between new and old controllers of pole-mounted automatic switches, comprising: a signal collection module, a mapping relationship construction module, a cable construction module, and a connection module; The signal collection module acquires a first signal definition set based on the controller interface of the first technical specification and a second signal definition set based on the pole-mounted switch PT interface of the second technical specification, respectively. The mapping relationship construction module establishes an electrical signal mapping relationship between the controller interface and the PT interface based on the first signal definition set and the second signal definition set. The cable construction module is constructed based on the electrical signal mapping relationship to create a conversion cable. One end of the conversion cable is equipped with a first connector that matches the controller interface, and the other end is equipped with a second connector that matches the PT interface. The connection module connects the controller and the pole-mounted switch via a conversion cable, and completes PT signal compatible communication between the two based on the electrical signal mapping relationship.

[0017] The present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, characterized in that the processor executes the computer program to implement the steps of a method for converting PT signals to be compatible with old and new controllers of pole-mounted automatic switches.

[0018] The present invention provides a computer-readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed by a processor, it implements the steps of a method for converting PT signals to be compatible with old and new controllers of pole-mounted automatic switches.

[0019] The beneficial effects of this invention are as follows: By establishing an electrical mapping relationship based on signal function analysis, this invention solves the incompatibility problem caused by differences in the number of interface pins and signal definitions between new and old devices, achieving true interconnection between different versions of devices. By reliably connecting the shielded ground pin to the connector housing, an effective single-point grounding is formed, improving the signal's anti-interference capability in complex electromagnetic environments and ensuring signal transmission quality.

[0020] The developed conversion cable has a simple and reliable structure, enabling plug-and-play operation on-site and improving maintenance efficiency. This low-cost solution avoids the high costs associated with large-scale replacement of existing equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart illustrating a method for PT signal conversion that enables compatibility between old and new controllers of pole-mounted automatic switches, as provided in one embodiment of the present invention. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] Example 1, referring to Figure 1 This is one embodiment of the present invention, which provides a PT signal conversion method to achieve compatibility between old and new controllers for pole-mounted automatic switches, including: In existing technologies, when using existing controllers conforming to the 2018 technical specifications (using a 5-pin interface) with pole-mounted switches conforming to the 2021 new specifications (using a 10-pin interface), the fundamental challenge lies in the fact that the old and new interfaces not only differ in the number of physical pins, but also in their electrical signal definitions. Traditional solutions either involve replacing the entire old controller with the new version, which is costly and wasteful of assets; or attempting manual jumpers, but because an accurate signal function mapping relationship is not established, it is prone to wiring errors, signal interference, and even equipment damage, making reliable communication impossible.

[0025] Therefore, this embodiment systematically solves this technical problem through the following steps: S1. Obtain the first signal definition set of the controller interface based on the first technical specification and the second signal definition set of the pole-mounted switch PT interface based on the second technical specification respectively; S2. Based on the first signal definition set and the second signal definition set, establish the electrical signal mapping relationship between the controller interface and the PT interface; S3. Construct a conversion cable based on the electrical signal mapping relationship; S4. One end of the conversion cable is equipped with a first connector that matches the controller interface, and the other end is equipped with a second connector that matches the PT interface; S5. Connect the controller and the pole-mounted switch via a conversion cable to achieve PT signal compatibility communication between the two based on the electrical signal mapping relationship.

[0026] Example 2, an embodiment of the present invention, provides a PT signal conversion method for achieving compatibility between old and new controllers of pole-mounted automatic switches based on the previous embodiment, including: Step S1, obtaining the first signal definition set of the controller interface based on the first technical specification and the second signal definition set of the pole-mounted switch PT interface based on the second technical specification, includes the following steps A1~A3: A1. By parsing the first technical specification, obtain the voltage signals and ground signals defined for each pin in the controller interface.

[0027] The first technical specification is the 2018 edition of the Technical Specification for 10kV Pole-Mounted Vacuum Circuit Breaker Automation Complete Equipment.

[0028] We conducted an in-depth study and analysis of the "Technical Specification for Automated Complete Sets of 10kV Pole-Mounted Vacuum Circuit Breakers (2018 Edition V2.0)" (hereinafter referred to as the "Old Specification") to obtain the complete electrical signal definition of the 5-pin interface on the controller side in the Old Specification.

[0029] A2. By analyzing the second technical specification, obtain the voltage signal, ground signal, and shielding ground signal defined for each pin in the PT interface of the pole-mounted switch.

[0030] The second technical specification is the 2021 edition of the Technical Specification for 10kV Pole-Mounted Vacuum Circuit Breaker Automation Complete Equipment.

[0031] We conducted an in-depth study and analysis of the "Technical Specification for Automated Complete Sets of 10kV Pole-Mounted Vacuum Circuit Breakers (2021 Edition V1.0)" (hereinafter referred to as the "New Specification") to obtain the complete electrical signal definition of the 10-core interface on the PT side of the pole-mounted switch in the New Specification.

[0032] A3. Based on the principle of functional consistency, identify all signals in the two signal definition sets that correspond to each other in electrical function.

[0033] In this embodiment, the first technical specification of S1 is the general interface technical specification for industrial automation controllers. This specification clearly defines the standard signal definitions for each pin in the controller interface, including: Analog voltage input signal: Defines the pin assignment and range of the voltage sampling signal for each phase.

[0034] Digital input signal: Defines the pin definitions for the status detection signal.

[0035] Power signal: Defines the input pins for the DC operating power supply.

[0036] Grounding signal: This includes the specific definitions of signal grounding and protective grounding.

[0037] In one alternative implementation, the first technical specification of S1 is: Intelligent Distribution Controller Communication Interface Specification, which defines the standard interface requirements between the controller and the distribution automation system.

[0038] In another alternative implementation, the first technical specification of S1 is: the technical specification for the interface of the relay protection device, which specifies the interface signal definition and electrical parameter requirements of the protection device.

[0039] In this embodiment, the second technical specification of S1 is the pole-mounted switch voltage transformer interface technical specification, which defines in detail the various technical requirements of the PT interface, including: Voltage signal interface: Defines the interface parameters for primary and secondary voltage signals.

[0040] Grounding system: Define the technical requirements for various grounding signals.

[0041] Shielding requirements: Specify the specific implementation method for grounding the shielding layer.

[0042] Interface protection: Defines the protection requirements for interfaces against lightning strikes, overvoltages, etc.

[0043] In one alternative implementation, the second technical specification of S1 is: the distribution network measurement and control unit interface specification, which provides the interface standard for distribution network measurement and control equipment.

[0044] In another alternative implementation, the second technical specification of S1 is: the power system smart terminal interface specification, which defines the interface technical requirements for smart terminal devices.

[0045] The A3 functional consistency principle in this implementation is based on a strict matching principle of electrical functional attributes. It establishes an accurate signal mapping relationship by identifying and comparing signals with the same electrical characteristics and functional roles in two signal definition sets. Specifically, it includes the following three levels of matching rules: Voltage signal matching identifies the correspondence between voltage signals in the first signal definition set and voltage signals in the second signal definition set that have the same voltage level and the same phase characteristics. Grounding signal matching identifies the correspondence between two signals that perform the same grounding function in the signal definition set, including different types of grounding signals such as protective grounding and functional grounding; Special function signal matching identifies the correspondence between the shielding ground signal in the second signal definition set and the signal in the first signal definition set that performs a similar electromagnetic shielding function, ensuring equivalent substitution in electrical function.

[0046] In one optional implementation, the A3 functional consistency principle is: based on the matching principle of signal timing characteristics, by analyzing the timing characteristics, activation conditions and duration of each signal in the two signal definition sets during system operation, signals with the same timing behavior pattern are identified, and a functional consistency judgment based on dynamic characteristics is established.

[0047] In another optional implementation, the A3 functional consistency principle is: based on the matching principle of physical connection characteristics, by analyzing the physical connector structure, pin arrangement pattern and mechanical characteristics of the two interfaces, signals with corresponding relationships at the physical connection level are identified to ensure that signal mapping meets the compatibility requirements of physical connection.

[0048] This invention effectively solves the technical challenge of compatibility between old and new controllers by implementing the PT signal conversion method provided in this embodiment. This method systematically analyzes the signal definitions of different versions of technical specifications and establishes a signal mapping mechanism based on functional consistency, achieving seamless interface integration between the 2018 and 2021 versions of pole-mounted switch controllers. Specifically, through precise matching of voltage signals, grounding signals, and special function signals, it ensures the consistency of electrical characteristics and functional integrity during the signal conversion process. This retains the core functions of the original controller while also meeting the shielding and protection requirements of the new generation of equipment, significantly improving the efficiency and reliability of equipment upgrades and providing a practical technical guarantee for the iterative upgrade of power distribution automation equipment.

[0049] Step S2, based on the first signal definition set and the second signal definition set, establishes the electrical signal mapping relationship between the controller interface and the PT interface, including the following steps B1~B3: B1. Match and connect each phase voltage and ground signal pin defined in the controller interface with the voltage and ground signal pins in the PT interface that have the same function.

[0050] B2. For the shielded grounding signal unique to the PT interface, an electrical connection is made inside the conversion cable to the metal shell of the corresponding connector.

[0051] B3. Based on the correspondence, form a complete and clear electrical signal connection comparison table.

[0052] Based on the two acquired signal definition sets, functional matching is performed to establish a precise electrical signal mapping relationship. The mapping relationship is shown in Table 1.

[0053] Table 1 Mapping Relationship Table

[0054] This invention is not a simple wire sequence connection, but rather an intelligent matching based on signal function. For example, the "common ground" of the old standard and the "signal ground" of the new standard are functionally equivalent, so they are connected. In particular, this invention does not discard the "shielded ground (pin 10)" unique to the 10-pin interface of the new standard, but reliably connects it to the connector shell inside the conversion cable, achieving single-point effective grounding of the shielding layer. This design improves the anti-interference capability and transmission stability of the signal in complex electromagnetic environments, and avoids circulating current interference that may be caused by the shielding layer being suspended or grounded at both ends. This is a technical difficulty that is easily overlooked by those skilled in the art in simple conversions.

[0055] Step S3: Based on the electrical signal mapping relationship, construct a conversion cable, including the following steps C1~C3: C1. Select a first industrial-grade connector that is physically compatible with the controller interface and a second industrial-grade connector that is physically compatible with the pole-mounted switch (PT) interface.

[0056] C2. According to the electrical signal connection reference table, use shielded cable to correctly solder or crimp the corresponding functional pins of the connectors at both ends; C3. Electrically connect the cable defined as shielded and grounded to the metal shell of the corresponding connector to complete the assembly of the entire conversion cable.

[0057] In this embodiment, the first industrial-grade connector and the second industrial-grade connector C1 are selected as follows: the first industrial-grade connector physically matches the controller interface defined in the 2018 version of the technical specification, and the second industrial-grade connector physically matches the pole-mounted switch (PT) interface defined in the 2021 version of the technical specification. The first industrial-grade connector must fully comply with the definitions of the mechanical structure, pin number, and arrangement of the controller interface in the 2018 version of the technical specification; the second industrial-grade connector must fully comply with the definitions of the mechanical structure, pin number, and arrangement of the PT interface in the 2021 version of the technical specification.

[0058] In one alternative embodiment, the first and second industrial-grade connectors of C1 are industrial connectors with an IP67 protection rating. The first industrial-grade connector adopts an aviation plug structure compatible with the 2018 technical specification to ensure reliable electrical connection in harsh outdoor environments. The second industrial-grade connector adopts a waterproof PT interface connector that matches the 2021 technical specification. Its contacts are gold-plated to improve corrosion resistance, and its mechanical structure design meets the requirements of frequent plugging and unplugging.

[0059] In another alternative implementation, the first and second industrial-grade connectors of C1 are modular and scalable industrial connector systems. The first industrial-grade connector uses a multi-core aviation plug compatible with the 2018 technical specification, supporting mixed transmission of signals and power. The second industrial-grade connector uses a shielded PT interface connector that matches the 2021 technical specification. Its internal structure design meets the 360-degree circumferential shielding requirement, and the outer shell is made of aluminum alloy to provide good electromagnetic shielding.

[0060] The PT signal conversion method provided by this invention effectively solves the compatibility problem of pole-mounted switch controllers based on the 2018 and 2021 technical specifications. This method systematically analyzes the signal definitions of the two versions of the technical specifications, establishes an accurate functional mapping relationship, and constructs a dedicated conversion cable accordingly, thus achieving electrical characteristic matching and physical connection compatibility between the old and new controller interfaces.

[0061] This invention ensures the accuracy and integrity of signal transmission and meets electromagnetic compatibility protection requirements by selecting industrial-grade connectors that are fully compatible with the two version interfaces, using shielded cables for precise wiring according to the mapping relationship, and strictly implementing grounding of the shielding layer. It provides a plug-and-play solution for field equipment modification, improves equipment upgrade efficiency, and reduces modification costs.

[0062] Step S4 involves having a first connector at one end of the conversion cable that matches the controller interface and a second connector at the other end that matches the PT interface, including the following steps D1~D2: D1. One end of the conversion cable is equipped with a first connector that matches the controller interface, and the other end is equipped with a second connector that matches the PT interface.

[0063] Based on the established mapping relationship, a conversion cable is constructed. One end uses a 5-pin industrial-grade aviation plug that matches the old controller, and the other end uses a 10-pin industrial-grade aviation plug that matches the new switch PT interface. The aviation plug has the advantages of preventing mis-insertion, waterproofing (IP65 and above), and vibration resistance, making it suitable for outdoor pole-mounted operation environments.

[0064] D2. The length of the conversion cable shall not be less than the set parameters, and the internal conductors shall include a shielding layer.

[0065] Select multi-core shielded cables with a length of not less than 50cm. Use different colored wires inside the cable, and weld or crimp them strictly according to the mapping relationship.

[0066] Make a reliable electrical connection between the shielded ground wire at the 10-pin end (corresponding to pin 10) and the metal shell of the 10-pin aviation connector. Both ends of the cable must be properly stress-relieved to prevent internal cable breakage due to pulling during operation.

[0067] Step S5: Connect the controller and the pole-mounted switch via a conversion cable, and complete the PT signal compatible communication between the two based on the electrical signal mapping relationship, including the following steps E1~E6: E1. When the equipment is energized, the voltage signal of the pole-mounted switch PT interface is transmitted to the controller interface through the conversion cable according to the electrical signal connection table.

[0068] During on-site maintenance, insert the 5-core end of the fabricated conversion cable into the old controller and the 10-core end into the PT interface of the new pole-mounted switch. At this point, the old and new equipment are electrically connected through the conversion cable described in this invention.

[0069] E2. The controller successfully received and correctly interpreted the phase voltage and zero-sequence voltage signals from the pole-mounted switch.

[0070] E3. Based on the accurately acquired PT signals, the controller normally performs line monitoring, protection, and automated control functions.

[0071] The voltage signals (Ua, Ub, Uc, Uo) on the PT side will be transmitted to the controller side without loss according to the preset mapping relationship, so that the controller can collect the line voltage information normally and thus realize the monitoring and protection functions of the new switch.

[0072] E4. Test the communication link established through the conversion cable to verify whether it meets the preset PT signal transmission requirements.

[0073] To ensure the conversion is 100% reliable, testing and verification are conducted.

[0074] E5. Verify that all pins connected based on the mapping relationship have good conductivity.

[0075] Using a multimeter in resistance mode, check the continuity of each pin according to the mapping table to ensure that the connection is correct and there are no short circuits or open circuits.

[0076] E6. With the controller and pole-mounted switch powered on, verify that the controller can correctly acquire the PT voltage signal of the pole-mounted switch.

[0077] With the equipment powered on, use a multimeter in AC voltage mode to measure the voltage of each phase at the 5-pin interface on the controller side to confirm that the voltage value is normal and matches the actual voltage of the line.

[0078] Operate the old controller to perform remote opening and closing tests to verify that the control commands can be correctly delivered and executed through the conversion cable.

[0079] Observe the background monitoring system to confirm that the data sent by the pole-mounted switch (such as voltage, switch status, etc.) is complete and accurate.

[0080] Example 3 is an embodiment of the present invention. This embodiment provides a PT signal conversion system that enables compatibility between new and old controllers for pole-mounted automatic switches, including a signal collection module, a mapping relationship construction module, a cable construction module, and a connection module. The signal collection module acquires a first signal definition set based on the controller interface of the first technical specification and a second signal definition set based on the pole-mounted switch PT interface of the second technical specification, respectively. The mapping relationship construction module establishes an electrical signal mapping relationship between the controller interface and the PT interface based on the first signal definition set and the second signal definition set. The cable construction module is constructed based on the electrical signal mapping relationship to create a conversion cable. One end of the conversion cable is equipped with a first connector that matches the controller interface, and the other end is equipped with a second connector that matches the PT interface. The connection module connects the controller and the pole-mounted switch via a conversion cable, and completes PT signal compatible communication between the two based on the electrical signal mapping relationship.

[0081] This embodiment also provides an electronic device applicable to a method for converting PT signals to be compatible with both old and new controllers of a pole-mounted automatic switch, comprising: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the method for converting PT signals to be compatible with both old and new controllers of a pole-mounted automatic switch as proposed in the above embodiment.

[0082] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements a PT signal conversion method for achieving compatibility between old and new controllers of pole-mounted automatic switches, as proposed in the above embodiment.

[0083] The storage medium proposed in this embodiment and the PT signal conversion method for achieving compatibility between old and new controllers of pole-mounted automatic switches proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0084] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0085] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for PT signal conversion that enables compatibility between old and new controllers for pole-mounted automatic switches, characterized in that: The application relates to a PT signal conversion cable for connecting a controller and a pole-mounted switch. The application comprises the following steps: respectively acquiring a first signal definition set of a controller interface based on a first technical specification and a second signal definition set of a pole-mounted switch PT interface based on a second technical specification; establishing an electrical signal mapping relationship between the controller interface and the PT interface based on the first signal definition set and the second signal definition set; constructing a conversion cable according to the electrical signal mapping relationship; one end of the conversion cable is provided with a first connector matched with the controller interface, and the other end is provided with a second connector matched with the PT interface; 2. The PT signal conversion method for realizing the compatibility of new and old controllers of the on-pole automation switch according to claim 1, characterized in that: the PT signal compatible communication between the controller and the pole-mounted switch is completed according to the electrical signal mapping relationship through the conversion cable. The application comprises the following steps: by analyzing the first technical specification, voltage signals and ground signals defined by each pin in the controller interface are acquired; by analyzing the second technical specification, voltage signals, ground signals and shield layer ground signals defined by each pin in the pole-mounted switch PT interface are acquired; 3. The PT signal conversion method for implementing the compatibility of new and old controllers of the on-pole automation switch according to claim 2, characterized in that: based on the functional consistency principle, all signals corresponding to each other in electrical functions in the two signal definition sets are identified. The application comprises the following steps: the voltage and ground signal pins defined in the controller interface are matched and connected with the voltage and ground signal pins in the PT interface which are completely corresponding in function; for the shield layer ground signal unique to the PT interface, the shield layer ground signal is electrically connected with the metal shell of the corresponding connector inside the conversion cable; 4. The PT signal conversion method for implementing the compatibility of new and old controllers of the on-pole automation switch according to claim 3, characterized in that: according to the corresponding relationship, a complete and clear electrical signal connection table is formed. The application comprises the following steps: a first industrial-grade connector physically matched with the controller interface and a second industrial-grade connector physically matched with the pole-mounted switch PT interface are selected; according to the electrical signal connection table, the corresponding function pins of the two end connectors are correctly welded or crimped by using a shielded cable; 5. The PT signal conversion method for implementing the compatibility of new and old controllers of the on-pole automation switch according to claim 4, characterized in that: the cable defined as the shield ground is electrically connected with the metal shell of the corresponding connector, and the assembly of the whole conversion cable is completed. The application comprises the following steps: one end of the conversion cable is provided with a first connector matched with the controller interface, and the other end is provided with a second connector matched with the PT interface; 6. The PT signal conversion method for implementing the compatibility of new and old controllers of the on-pole automation switch according to claim 5, characterized in that: the length of the conversion cable is not less than a set parameter, and the internal wires contain a shield layer. The application comprises the following steps: under the live state of the equipment, the voltage signals of the pole-mounted switch PT interface are transmitted to the controller interface according to the electrical signal connection table through the conversion cable; the controller successfully receives and correctly analyzes the phase voltage and zero sequence voltage signals from the pole-mounted switch; 7. The PT signal conversion method for implementing the compatibility of new and old controllers of the on-pole automation switch according to claim 6, characterized in that: based on the accurate acquisition of the PT signals, the controller normally executes the line monitoring, protection and automation control functions. The application comprises the following steps: Test the communication link established by the conversion cable to verify whether it meets the preset PT signal transmission requirements; Verify that all pins connected based on the mapping relationship are good in pin conductivity; Verify that the controller can correctly collect the PT voltage signal of the pole-mounted switch in the controller and pole-mounted switch power-on state.

8. A PT signal conversion system for realizing the compatibility of new and old controllers of pole-mounted automatic switches, which applies the PT signal conversion method for realizing the compatibility of new and old controllers of pole-mounted automatic switches according to any one of claims 1-7, characterized in that, Comprise: a signal collection module, a mapping relationship construction module, a cable construction module, and a connection module; the signal collection module is to respectively acquire a first signal definition set based on the controller interface of the first technical specification and a second signal definition set based on the PT interface of the pole-mounted switch based on the second technical specification; the mapping relationship construction module is to establish an electrical signal mapping relationship between the controller interface and the PT interface based on the first signal definition set and the second signal definition set; the cable construction module is to construct a conversion cable according to the electrical signal mapping relationship, one end of the conversion cable is configured with a first connector matched with the controller interface, and the other end is configured with a second connector matched with the PT interface; the connection module is to connect the controller and the pole-mounted switch through the conversion cable and complete the PT signal compatible communication between the two according to the electrical signal mapping relationship. 9.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is configured to perform the method according to any one of claims 1-8 when the computer program is executed by the processor. The processor executes the computer program to realize the steps of the PT signal conversion method for realizing the compatibility of the new and old controllers of the pole-mounted automatic switch according to any one of claims 1 to 7.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to realize the steps of the PT signal conversion method for realizing the compatibility of the new and old controllers of the pole-mounted automatic switch according to any one of claims 1 to 7.

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