Emergency time service and time synchronization interface verification method and system

Abstract

The invention discloses an emergency time service and time synchronization interface verification method and system, and relates to the field of power system clock synchronization, and the method comprises the steps: selecting equipment suitable for different time service modes, and carrying out the configuration according to the specific demands of secondary equipment in a power system; based on the configured equipment, manufacturing an equipment shell and installing an interface; internal modules including a time synchronization module, a signal transmission module, a B code module and a central control module are arranged, and function testing is carried out; the method can be widely applied to places with relatively high requirements on time precision, such as time synchronization of secondary equipment of a transformer substation and time synchronization of a dispatching communication clock source; according to the method, the time synchronization abnormity of the secondary equipment in the transformer substation is detected and diagnosed, accurate off-line rapid time service is carried out on the secondary equipment, the method can be widely applied to the maintenance operation and maintenance work of the secondary equipment supporting B codes, the maintenance capacity for the problems is greatly improved, and the phenomenon of data abnormity of the secondary equipment caused by the time problem is avoided.

Description

Technical Field

[0001] The invention relates to the field of power system clock synchronization, and in particular to an emergency time service and time synchronization interface verification method and system. Background Art

[0002] In the power system, secondary equipment such as relay protection devices and measurement and control units in substations require accurate clock synchronization to ensure the safety and stable operation of the system. However, there are often time inconsistencies between these devices and the synchronization clock source, which may cause problems in data transmission between devices and even affect the normal operation of the power system.

[0003] There is a lack of targeted third-party tools on the market to accurately detect the root cause of the problem, and temporary clock synchronization failures may cause the equipment to be unable to be accurately timed. Although there are some clock synchronization devices in the prior art, they mainly focus on online synchronization and synchronization at the infrastructure level, and pay less attention to the specific needs of secondary equipment in substations. Some existing synchronization methods, such as the Network Time Protocol (NTP), although they can provide clock synchronization to a certain extent, rely on stable network connections and accurate time sources. In addition, clock drift and network delay problems in distributed systems remain challenges facing the industry. In actual applications, secondary equipment in substations are often distributed in different locations, and signal transmission between them and the main timer may be interfered, resulting in reduced time synchronization accuracy. Existing devices and systems often lack specialized solutions for these specific problems, especially when dealing with temporary network failures and small time differences between devices, and perform poorly. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: how to quickly and accurately perform time synchronization on secondary devices to solve the problem caused by abnormal time synchronization.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides an emergency timing and timing interface verification method, including:

[0008] Select equipment that adapts to different timing modes and configures it according to the specific needs of secondary equipment in the power system;

[0009] Based on the configured equipment, make the equipment shell and install the interface;

[0010] Set up internal modules including time synchronization module, signal transmission module, B code module and central control module, and perform functional tests.

[0011] As a preferred solution for the emergency timing and timing interface verification method, the following is a solution:

[0012] The selecting of devices adapted to different timing modes and configuring according to specific requirements of secondary devices in the power system includes:

[0013] The selection mode can adapt to different types and needs of secondary equipment;

[0014] Perform interface configuration;

[0015] Check the technical specifications of the equipment, including timing accuracy, supported synchronization protocols, and scalability;

[0016] Set the frequency of time synchronization as needed;

[0017] Configure multiple input and output channels to ensure that the system can still maintain time synchronization when a link fails;

[0018] Select the primary clock source and the backup clock source.

[0019] As a preferred solution for the emergency timing and timing interface verification method, the following is a solution:

[0020] The time synchronization module is responsible for receiving and distributing time signals, which are used to coordinate the operations of other internal modules and ensure the time accuracy of all operations. The time signals received by the time synchronization interface are distributed to all related modules through a low-latency digital bus to achieve accurate time marking and synchronization.

[0021] The signal transmission module is responsible for processing the sending and receiving of wireless signals; it is directly connected to the central control unit of the device to ensure that after receiving the external CDMA signal, it can be quickly decoded and transmitted to the data processing module.

[0022] As a preferred solution for the emergency timing and timing interface verification method, the following is a solution:

[0023] The function of the B code module is to process the baseband signal accessed from the outside; after the signal enters, after a series of filtering and amplification operations, the B code module transmits the signal to the digital signal processing module for further modulation, demodulation and data analysis.

[0024] As a preferred solution for the emergency timing and timing interface verification method, the following is a solution:

[0025] The central control module is responsible for the coordination and data interaction between the modules; the central control module receives data from the signal transmission module and the B code module, and schedules and processes the data according to the timing signal provided by the time synchronization module.

[0026] As a preferred solution for the emergency timing and timing interface verification method, the following is a solution:

[0027] The functional test comprises:

[0028] After the overall assembly of the equipment is completed, test the connection and signal transmission performance of each interface to ensure that the CDMA signal, time synchronization signal and B code can be accurately and stably transmitted through the corresponding interface; perform an appearance inspection on the assembled equipment to ensure that there are no scratches or defects.

[0029] As a preferred solution for the emergency timing and timing interface verification method, the following is a solution:

[0030] The manufacturing of the device housing and the installation of the interface include:

[0031] Choose metal materials to make the equipment housing;

[0032] The installation of the interface includes:

[0033] CDMA interface: install a BNC connector;

[0034] TOD interface: The 9-pin D-type connector in the middle is used for the input and output of time synchronization signals. During the production process, the shell is opened by CNC equipment to ensure the installation accuracy of the interface.

[0035] B-code interface: Use BNC connector; the production process needs to ensure that the interface hole position is accurate to ensure the stability of the interface connection and the quality of signal transmission;

[0036] Laser printing technology is used to clearly mark each interface on the surface of the device casing.

[0037] In a second aspect, an embodiment of the present invention provides an emergency timing and timing interface verification system, including:

[0038] Configuration module, used to select devices adapted to different timing modes and configure them according to the specific needs of secondary devices in the power system;

[0039] External installation module, used to make device housing and install interfaces based on the configured device;

[0040] The test module is used to set up internal modules including the time synchronization module, the signal transmission module, the B code module and the central control module, and perform functional tests.

[0041] In a third aspect, an embodiment of the present invention provides a computing device, including:

[0042] Memory and processor;

[0043] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the one or more programs are executed by the one or more processors, the one or more processors implement the emergency timing and timing interface verification method as described in any embodiment of the present invention.

[0044] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the emergency timing and timing interface verification method.

[0045] The beneficial effects of the present invention are as follows: the present invention can be widely used in places where the time accuracy requirements are relatively high, such as substation secondary equipment synchronization and dispatch communication clock source synchronization; the present invention detects and diagnoses the time synchronization anomaly of the secondary equipment in the substation, and performs accurate offline fast time synchronization on the secondary equipment, which can be widely used in the maintenance and operation of secondary equipment supporting B code, greatly improving the maintenance capability for such problems and avoiding the phenomenon of data anomalies caused by time problems of secondary equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use 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 ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0047] Figure 1 It is an overall flow chart of the emergency timing and timing interface verification method described in the first embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0051] Example 1

[0052] Reference Figure 1 , which is the first embodiment of the present invention, provides an emergency timing and timing interface verification method, including:

[0053] S1: Select devices that adapt to different timing modes and configure them according to the specific needs of secondary devices in the power system;

[0054] S2: Based on the configured equipment, make the equipment housing and install the interface;

[0055] S3: Set up internal modules including a time synchronization module, a signal transmission module, a B code module and a central control module, and perform functional tests.

[0056] In the embodiment of the present application, selecting devices adapted to different timing modes in the above step S1 and configuring them according to the specific requirements of the secondary devices in the power system includes:

[0057] The selection mode can adapt to different types and needs of secondary equipment;

[0058] In the embodiments of the present application, devices supporting B code and CDMA modes are selected, and these modes can adapt to secondary devices of different types and requirements.

[0059] Interface configuration:

[0060] B-code interface: Ensure that the device has a B-code interface for receiving traditional clock synchronization signals.

[0061] CDMA interface: Configure the CDMA interface to passively receive accurate clock sources, ensuring accurate time even without a network connection.

[0062] TOD interface: Configure the time output interface (TOD) to distribute time synchronization signals to other devices.

[0063] In another possible implementation, a PTP (Precision Time Protocol) device may also be selected;

[0064] PTP (Precision Time Protocol) is a protocol used to synchronize clocks within a local area network. It is particularly suitable for scenarios that require high-precision time synchronization, such as power automation systems, industrial control systems, etc.

[0065] It can usually provide microsecond or even nanosecond time synchronization accuracy; it has low-latency time synchronization capabilities and is suitable for time-sensitive applications; it supports multi-path synchronization to ensure that it can quickly switch to the backup path when one path fails.

[0066] Interface configuration:

[0067] PTP interface: Configure the PTP interface to receive and distribute high-precision time synchronization signals.

[0068] G.8275.1 interface: supports the G.8275.1 standard interface to ensure consistency in a multi-vendor environment.

[0069] In another possible implementation, a GPS / Beidou timing device may also be selected;

[0070] Using GPS (Global Positioning System) or BeiDou system as the timing source has the advantages of high precision and global coverage.

[0071] No matter where you are, as long as there is satellite signal coverage, you can obtain high-precision time; it has a redundant design and can switch to the backup clock source when the GPS or Beidou signal is lost; it supports multiple timing modes, such as 1PPS (pulse per second) signal, IRIG-B code, etc.

[0072] Interface configuration:

[0073] GPS / Beidou interface: Configure the GPS or Beidou interface to receive satellite signals.

[0074] 1PPS interface: Configure the 1PPS interface for high-precision time synchronization.

[0075] IRIG-B interface: Configure the IRIG-B interface to receive traditional clock synchronization signals.

[0076] In another possible implementation, an IEEE 1588 device may also be selected;

[0077] IEEE 1588 is a time synchronization protocol used in industrial and power systems. It can achieve high-precision synchronization in harsh environments. It is suitable for industrial environments and has high reliability and anti-interference capabilities. It can adapt to changes in the network environment to ensure long-term stable time synchronization. It supports a variety of network topologies and device configurations to adapt to different application scenarios.

[0078] Interface configuration:

[0079] IEEE 1588 interface: Configure the IEEE 1588 interface to receive and distribute time synchronization signals;

[0080] NTP interface: Supports NTP protocol to ensure compatibility with traditional network devices.

[0081] Check the technical specifications of the equipment, including timing accuracy, supported synchronization protocols, and scalability;

[0082] Set the frequency of time synchronization as needed;

[0083] Configure multiple input and output channels to ensure that the system can still maintain time synchronization when a link fails;

[0084] Select the primary clock source and the backup clock source.

[0085] In the embodiment of the present application, the manufacturing of the device housing and the installation of the interface in the above step S2 include:

[0086] Choose metal materials to make the equipment housing;

[0087] It should be noted that high-quality metal materials are selected to make the equipment shell to ensure that it is strong and durable and can effectively prevent electromagnetic interference. The shell is painted to give it good corrosion resistance and wear resistance, and a neat and elegant appearance.

[0088] In another possible implementation, a modular housing may be used, which allows for rapid replacement or expansion of different functional modules according to actual needs, such as adding more interface types or enhancing electromagnetic shielding performance.

[0089] The installation of the interface includes:

[0090] CDMA interface: install a BNC connector;

[0091] It should be noted that this interface is widely used in signal transmission and has the advantages of fast connection and disconnection, small signal loss, etc. The holes at the interface position are completed by precision drilling equipment to ensure the stability and tightness of the installation.

[0092] TOD interface: The 9-pin D-type connector in the middle is used for the input and output of time synchronization signals; during the production process, the shell is opened by CNC equipment to ensure the installation accuracy of the interface. After installation, it is firmly fixed to prevent loosening.

[0093] B-code interface: Use BNC connector; the production process also needs to ensure that the interface hole position is accurate to ensure the stability of the interface connection and the quality of signal transmission.

[0094] On the surface of the device shell, laser printing technology is used to clearly mark each interface;

[0095] It should be noted that laser printing has the characteristics of high precision and wear resistance, ensuring that the markings remain clearly visible during long-term use of the equipment.

[0096] In another possible implementation, the installation of the interface may also consider adopting hot-swap technology so as to replace or upgrade the interface without interrupting the operation of the system.

[0097] In an embodiment of the present application, the time synchronization module in the above step S3 is responsible for receiving and distributing time signals, which is used to coordinate the operations of other internal modules and ensure the time accuracy of all operations; the time signal received by the time synchronization interface is distributed to all related modules through a low-latency digital bus to achieve accurate time marking and synchronization.

[0098] It should be noted that internally, through the FPGA logic control circuit, the time synchronization signal will be quickly processed and distributed to other control modules to ensure that there is an accurate time reference at every moment of the equipment operation. In the time synchronization system of the secondary equipment of the power system, the FPGA (Field-Programmable Gate Array) logic control circuit plays a vital role. FPGA is a highly flexible integrated circuit that can be programmed to implement specific digital logic functions.

[0099] In the embodiment of the present application, the signal transmission module in the above step S3 is responsible for processing the sending and receiving of wireless signals; it is directly connected to the central control unit of the device to ensure that after receiving the external CDMA signal, it can be quickly decoded and transmitted to the data processing module;

[0100] It should be noted that the data transmission between internal modules adopts differential signal transmission to ensure the stability and anti-interference ability of the signal in complex electromagnetic environments. At the same time, the signal transmission module effectively filters out noise through the built-in filtering circuit to ensure high fidelity of the data.

[0101] In the embodiment of the present application, the function of the B code module in the above step S3 is to process the baseband signal accessed from the outside; after the signal enters, after a series of filtering and amplification operations, the B code module transmits the signal to the digital signal processing module for further modulation, demodulation and data analysis.

[0102] The B-code module interacts closely with the time synchronization module to ensure that the processing of the baseband signal is strictly synchronized with the time reference to achieve accurate signal acquisition and control. The timing information of the baseband signal is also shared with other modules through the time synchronization bus to ensure the coordinated operation of the signal within the device.

[0103] In an embodiment of the present application, the central control module in the above step S3 is the core of the entire device, responsible for the coordination and data interaction between the modules; the central control module receives data from the signal transmission module and the B code module, and schedules and processes these data according to the timing signal provided by the time synchronization module.

[0104] Furthermore, the central control module has a built-in high-speed processor and dedicated control logic circuit, which can quickly analyze signals from different sources and make real-time responses and adjustments. For example, when the signal strength of the signal transmission module changes, the central control module will adjust the power distribution of the device to maintain signal stability.

[0105] It should be noted that a high-speed serial communication bus (such as SPI or I2C) is used inside the device to realize data transmission between modules, ensuring that each module can exchange information at high speed and low latency.

[0106] The time synchronization module synchronizes the clocks of other modules through an independent signal line, so that the time bases of all modules are consistent. This independent clock line design avoids the accumulation of time errors between different modules and improves the overall stability of the system.

[0107] During the entire module interaction process, the device has a self-regulation and feedback mechanism. For example, when the baseband signal processing module detects an abnormality in the input signal, it will immediately send feedback to the central control module, which will further adjust the signal path or send an error alarm to ensure the accuracy of data processing and the security of the system.

[0108] Through the efficient interaction between these modules, the device can complete complex signal processing tasks in a highly synchronized manner, ensuring reliable and stable performance in various application scenarios. This modular design also makes the device flexible and adaptable in subsequent expansion and upgrades.

[0109] In another possible implementation, a redundant design can also be introduced. For example, a dual-backup time synchronization module or signal transmission module can be configured to ensure that when the main module fails, the backup module can immediately take over, thereby ensuring the continuity and reliability of the system. In terms of functional testing, it is possible to consider adding a switching test for the redundant module to verify the effectiveness of the backup mechanism.

[0110] In the embodiment of the present application, the functional test performed in the above step S3 includes:

[0111] After the overall assembly of the equipment is completed, test the connection and signal transmission performance of each interface to ensure that the CDMA signal, time synchronization signal and B code can be accurately and stably transmitted through the corresponding interface; perform an appearance inspection on the assembled equipment to ensure that there are no scratches or defects.

[0112] The above is a schematic scheme of the emergency timing and timing interface verification method of this embodiment. It should be noted that the technical scheme of the emergency timing and timing interface verification system and the technical scheme of the above emergency timing and timing interface verification method belong to the same concept. For details not described in detail in the technical scheme of the emergency timing and timing interface verification system in this embodiment, please refer to the description of the technical scheme of the above emergency timing and timing interface verification method.

[0113] The emergency timing and timing interface verification system in this embodiment includes:

[0114] Configuration module, used to select devices adapted to different timing modes and configure them according to the specific needs of secondary devices in the power system;

[0115] External installation module, used to make device housing and install interfaces based on the configured device;

[0116] The test module is used to set up internal modules including the time synchronization module, the signal transmission module, the B code module and the central control module, and perform functional tests.

[0117] This embodiment also provides a computing device, which is applicable to the case of the emergency timing and timing interface verification method, including:

[0118] Memory and processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement the emergency timing and timing interface verification method proposed in the above embodiment.

[0119] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, the emergency timing service and timing interface verification method proposed in the above embodiment is implemented.

[0120] The storage medium proposed in this embodiment and the emergency timing and timing interface verification method proposed in the above embodiment belong to the same inventive concept. The technical details not described in detail in this embodiment can be referred to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0121] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for verifying an emergency timing and timing interface, characterized in that: include: Select equipment that adapts to different timing modes and configures it according to the specific needs of secondary equipment in the power system; Based on the configured equipment, make the equipment shell and install the interface; Set up internal modules including time synchronization module, signal transmission module, B code module and central control module, and perform functional tests.

2. The method for verifying the emergency timing and timing interface according to claim 1, characterized in that: The selecting of devices adapted to different timing modes and configuring according to specific requirements of secondary devices in the power system includes: The selection mode can adapt to different types and needs of secondary equipment; Perform interface configuration; Check the technical specifications of the equipment, including timing accuracy, supported synchronization protocols, and scalability; Set the frequency of time synchronization as needed; Configure multiple input and output channels to ensure that the system can still maintain time synchronization when a link fails; Select the primary clock source and the backup clock source.

3. The method for verifying the emergency timing and timing interface according to claim 2, characterized in that: The time synchronization module is responsible for receiving and distributing time signals, which are used to coordinate the operations of other internal modules and ensure the time accuracy of all operations. The time signals received by the time synchronization interface are distributed to all related modules through a low-latency digital bus to achieve accurate time marking and synchronization. The signal transmission module is responsible for processing the sending and receiving of wireless signals; it is directly connected to the central control unit of the device to ensure that after receiving the external CDMA signal, it can be quickly decoded and transmitted to the data processing module.

4. The method for verifying the emergency timing and timing interface according to claim 3, characterized in that: The function of the B code module is to process the baseband signal accessed from the outside; after the signal enters, after a series of filtering and amplification operations, the B code module transmits the signal to the digital signal processing module for further modulation, demodulation and data analysis.

5. The method for verifying the emergency timing and timing interface according to claim 4, characterized in that: The central control module is responsible for the coordination and data interaction between the modules; the central control module receives data from the signal transmission module and the B code module, and schedules and processes the data according to the timing signal provided by the time synchronization module.

6. The method for verifying the emergency timing and timing interface according to claim 5, characterized in that: The functional test comprises: After the overall assembly of the equipment is completed, test the connection and signal transmission performance of each interface to ensure that the CDMA signal, time synchronization signal and B code can be accurately and stably transmitted through the corresponding interface; perform an appearance inspection on the assembled equipment to ensure that there are no scratches or defects.

7. The method for verifying the emergency timing and synchronization interface according to claim 6, characterized in that: The manufacturing of the device housing and the installation of the interface include: Choose metal materials to make the equipment housing; The installation of the interface includes: CDMA interface: install a BNC connector; TOD interface: The 9-pin D-type connector in the middle is used for the input and output of time synchronization signals. During the production process, the shell is opened by CNC equipment to ensure the installation accuracy of the interface. B-code interface: Use BNC connector; the production process needs to ensure that the interface hole position is accurate to ensure the stability of the interface connection and the quality of signal transmission; Laser printing technology is used to clearly mark each interface on the surface of the device casing.

8. A system using the emergency timing and timing interface verification method as claimed in any one of claims 1 to 7, characterized in that: include: Configuration module, used to select devices adapted to different timing modes and configure them according to the specific needs of secondary devices in the power system; External installation module, used to make device housing and install interfaces based on the configured device; The test module is used to set up internal modules including the time synchronization module, the signal transmission module, the B code module and the central control module, and perform functional tests.

9. A computing device comprising: Memory and processor; The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the emergency timing and timing interface verification method described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the emergency timing and timing interface verification method according to any one of claims 1 to 7.

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