阅读说明：本技术 一种变电站集中对时管理系统及方法 (Centralized time synchronization management system and method for transformer substation ) 是由 韩磊 周平 朱家立 段博涛 王勇 张介 于 2021-08-03 设计创作，主要内容包括：本发明公开了一种变电站集中对时管理系统及方法,包括定位授时模块、数据接收转换模块、集中处理模块、信息传输模块、计时检测模块和对时更新模块,以及变电站集中对时管理方法。本发明通过计时检测模块可以发出检测信号给信息传输模块；通过信息传输模块将采集的数据传输给集中处理模块；集中处理模块通过定位授时模块获取卫星定位授时数据；数据接收转换模块将将转换后的数据传输给集中处理模块；集中处理模块接收各模块的时刻数据,通过分析处理单元进行数据对比；当检测到变电站设备对时系统出现故障时,通过对时更新模块对变电站设备进行对时数据校准矫正,实现对对时系统各模块进行集中管理。(The invention discloses a centralized time synchronization management system and a centralized time synchronization management method for a transformer substation. The timing detection module can send a detection signal to the information transmission module; the collected data are transmitted to a centralized processing module through an information transmission module; the centralized processing module acquires satellite positioning time service data through the positioning time service module; the data receiving and converting module transmits the converted data to the centralized processing module; the centralized processing module receives the time data of each module and compares the data through the analysis processing unit; when the substation equipment time synchronization system is detected to have faults, time synchronization data of the substation equipment is calibrated and corrected through the time synchronization updating module, and centralized management of all modules of the time synchronization system is achieved.)

1. The utility model provides a centralized time synchronization management system of transformer substation, its characterized in that, including location time service module (1), data reception conversion module (2), centralized processing module (3), be used for carrying out time information interactive information transmission module (4), timing detection module (5) and time synchronization update module (6) with substation equipment, location time service module (1) with data reception conversion module (2) are connected, location time service module (1), data reception conversion module (2), information transmission module (4) and time synchronization update module (6) all with centralized processing module (3) are connected, timing detection module (5) with information transmission module (4) are connected.

2. A centralized substation time synchronization management system according to claim 1, wherein the timing detection module (5) comprises an automatic detection unit (10) and a manual detection unit (11), and both the automatic detection unit (10) and the manual detection unit (11) are connected to the information transmission module (4).

3. The centralized time synchronization management system for the transformer substation according to claim 1 or 2, wherein the centralized processing module (3) comprises an analysis processing unit (12), a time service data acquisition unit (13), a conversion data acquisition unit (14) and an in-station data acquisition unit (15), the analysis processing unit (12) is respectively connected with the time service data acquisition unit (13), the conversion data acquisition unit (14) and the in-station data acquisition unit (15), the time service data acquisition unit (13) is connected with the positioning time service module (1), the conversion data acquisition unit (14) is connected with the data receiving and converting module (2), and the in-station data acquisition unit (15) is connected with the information transmission module (4).

4. A centralized substation time setting management system according to claim 3, further comprising a data storage module (7) for storing time setting system management records, wherein the data storage module (7) is connected to the analysis processing unit (12).

5. A centralized substation time synchronization management system according to claim 1, further comprising a power supply module (8), wherein the power supply module (8) comprises an external power supply unit (16) and an internal energy storage unit (17), the external power supply unit (16) is connected to the centralized processing module (3), and the internal energy storage unit (17) is connected to the external power supply unit (16) and the centralized processing module (3), respectively.

6. A centralized substation time synchronization management system according to claim 1, 2 or 5, further comprising a display module (9), wherein the display module (9) is connected with the centralized processing module (3).

7. A method for centralized time synchronization management of a substation, which utilizes the system as claimed in any one of claims 1-6, and is characterized by comprising the following steps:

s1: the timing detection module (5) sends a detection signal to the information transmission module (4);

s2: the method comprises the steps that time data of the substation equipment are collected through an information transmission module (4), and the collected data are transmitted to a centralized processing module (3);

s3: the centralized processing module (3) acquires satellite positioning time service data through the positioning time service module (1);

s4: the data receiving and converting module (2) carries out data conversion on the data received by the positioning time service module (1) and transmits the converted data to the centralized processing module (3);

s5: the centralized processing module (3) receives the time data of each module, and the data comparison is carried out through the analysis processing unit (12);

s6: when the substation equipment time synchronization system is detected to have faults, time synchronization data calibration correction is carried out on the substation equipment through the time synchronization updating module (6).

Technical Field

The invention relates to the technical field of power systems, in particular to a centralized time synchronization management system and method for a transformer substation.

Background

The power grid system is a time-related system, the actions of a breaker and a protection device are required for the systematic analysis of the operation and the accident of the power grid, the time sequence of the occurrence of various events is required, and a substation providing the time sequence is essential for the time synchronization system. The substation time synchronization system is very important, and is used for synchronizing time of equipment such as a fault recorder, a relay protection device, a measurement and control device and a background monitoring system, so that the equipment operates based on a uniform time reference, and the requirements of fault recording, real-time data acquisition time consistency, time sequence recording (SOE) and the like are met, and the process and the reason of various events can be accurately analyzed. In an intelligent substation, the time setting precision required by the substation for the time setting system is less than 1us, and the importance of the time setting system is more and more prominent. When merging units are cascaded, each merging unit receives time tick signals of the same time synchronizer, and the abnormal time tick system causes the urgent defect of synchronous abnormal alarm of the merging units. For the line pilot differential protection and the bus differential protection, if a certain merging unit is abnormal in time pair, even protection malfunction may be caused. However, at present, due to the fact that modules of the time synchronization system of the transformer substation are distributed in a scattered mode, when the time synchronization system of the transformer substation fails, the problem that timely processing cannot be conducted exists.

For example, chinese patent CN105407317A, published 2016, 3, 16, discloses a video monitoring and time synchronization system based on an intelligent substation, which includes a video monitoring network server, a WEB browsing server, a GPS time synchronizer and a full digital IPC system. The all-digital IPC system is arranged at the intelligent substation end and carries out network NTP time synchronization through a high-speed communication data network; the intelligent substation is based on IEC61850 technical protocol, supports NTP (network time protocol) (SNTP), and directly clocks the video monitoring host computer of the intelligent substation through a network switch. The modules of the system are not managed in a centralized mode, when the time synchronization system of the transformer substation fails, devices need to be checked everywhere, processing cannot be carried out in time, and failure processing efficiency is affected.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the technical problem that modules of a time synchronization system of a transformer substation are distributed disorderly at present and cannot be processed in time when the time synchronization system of the transformer substation fails is solved. The system and the method for centralized time synchronization management of the transformer substation can be used for performing centralized management on all modules of the time synchronization system.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a centralized time synchronization management system for a transformer substation comprises a positioning time service module, a data receiving and converting module, a centralized processing module, an information transmission module, a timing detection module and a time synchronization updating module, wherein the information transmission module is used for carrying out time information interaction with transformer substation equipment, the positioning time service module is connected with the data receiving and converting module, the positioning time service module, the data receiving and converting module, the information transmission module and the time synchronization updating module are connected with the centralized processing module, and the timing detection module is connected with the information transmission module.

A time synchronization system of a transformer substation is characterized in that a timing detection module sends a detection signal to an information transmission module; the method comprises the steps that time data of substation equipment are collected through an information transmission module, and the collected data are transmitted to a centralized processing module; the centralized processing module acquires satellite positioning time service data through the positioning time service module; the data receiving and converting module carries out data conversion on the data received by the positioning time service module and transmits the converted data to the centralized processing module; the centralized processing module receives the time data of each module and compares the data through the analysis processing unit; when the substation equipment time synchronization system is detected to have faults, time synchronization data of the substation equipment is calibrated and corrected through the time synchronization updating module, and centralized management of all modules of the time synchronization system is achieved.

Preferably, the timing detection module comprises an automatic detection unit and a manual detection unit, and both the automatic detection unit and the manual detection unit are connected with the information transmission module. When the transformer substation is subjected to important operation, such as fault recovery or after maintenance is completed, active transformer substation equipment time setting management can be performed through the manual detection unit, waiting for the automatic detection unit is not needed, and the autonomy of the management system is enhanced.

Preferably, the centralized processing module comprises an analysis processing unit, a time service data acquisition unit, a conversion data acquisition unit and an in-station data acquisition unit, the analysis processing unit is respectively connected with the time service data acquisition unit, the conversion data acquisition unit and the in-station data acquisition unit, the time service data acquisition unit is connected with the positioning time service module, the conversion data acquisition unit is connected with the data receiving and converting module, and the in-station data acquisition unit is connected with the information transmission module. The time data of equipment in the station, the satellite time service data and the time service converted data are respectively acquired through the data acquisition unit, the time service data acquisition unit and the conversion data acquisition unit in the station, the data are mutually sampled and compared through integration of the analysis processing unit, and centralized processing is carried out when the equipment fails to work in time service or not.

Preferably, the system further comprises a data storage module for storing a system management record during time synchronization, and the data storage module is connected with the analysis processing unit. The data storage module stores the data of the time setting calibration records of the management system, so that the time setting fault reasons can be conveniently extracted and analyzed at the later stage, and the centralized management system is perfected.

Preferably, the system further comprises a power supply module, wherein the power supply module comprises an external power supply unit and an internal energy storage unit, the external power supply unit is connected with the centralized processing module, and the internal energy storage unit is respectively connected with the external power supply unit and the centralized processing module. The power is supplied by two power supply modes of the external power supply unit and the internal power supply unit, and the external power supply unit is powered by the internal power supply unit when the external power supply unit is powered off, so that the influence of external power off on the system is prevented. The internal energy storage unit can store energy by adopting a rechargeable lithium battery, and is connected with the external power supply unit to charge the lithium battery.

Preferably, the system further comprises a display module, and the display module is connected with the centralized processing module. The display module can adopt a liquid crystal display screen, and the display module is mainly used for displaying data at each moment collected by the centralized processing module, so that an operator can more intuitively check whether the centralized management system has error or fault.

A centralized time synchronization management method for a transformer substation utilizes the system and comprises the following steps:

s1: the timing detection module sends a detection signal to the information transmission module;

s2: the method comprises the steps that time data of substation equipment are collected through an information transmission module, and the collected data are transmitted to a centralized processing module;

s3: the centralized processing module acquires satellite positioning time service data through the positioning time service module;

s4: the data receiving and converting module carries out data conversion on the data received by the positioning time service module and transmits the converted data to the centralized processing module;

s5: the centralized processing module receives the time data of each module and compares the data through the analysis processing unit;

s6: when the substation equipment time synchronization system is detected to have faults, time synchronization data calibration correction is carried out on the substation equipment through the time synchronization updating module.

The centralized processing module detects the data of the positioning time service module and the data receiving and converting module through the time service data acquisition unit and the converting data acquisition unit, and when the data of the positioning time service module and the data receiving and converting module are consistent, the positioning time service module and the data receiving and converting module do not have faults. When the data of the positioning time service module and the data receiving conversion module are different from the time data of the substation equipment acquired by the information transmission module, the time synchronization system on the substation equipment is indicated to have a fault, the centralized processing module updates and corrects the equipment time when the substation equipment is idle through the time synchronization updating module, namely the time synchronization updating module transmits correct time to the substation equipment, the time of the substation equipment is updated, and the centralized management of the time fault of the substation equipment is realized.

The substantial effects of the invention are as follows: the timing detection module can send a detection signal to the information transmission module; the method comprises the steps that time data of substation equipment are collected through an information transmission module, and the collected data are transmitted to a centralized processing module; the centralized processing module acquires satellite positioning time service data through the positioning time service module; the data receiving and converting module carries out data conversion on the data received by the positioning time service module and transmits the converted data to the centralized processing module; the centralized processing module receives the time data of each module and compares the data through the analysis processing unit; when the substation equipment time synchronization system is detected to have faults, time synchronization data of the substation equipment is calibrated and corrected through the time synchronization updating module, and centralized management of all modules of the time synchronization system is achieved.

Drawings

FIG. 1 is a schematic composition diagram of the present embodiment;

FIG. 2 is a flowchart illustrating the steps performed in this embodiment.

Wherein: 1. the system comprises a positioning time service module, 2, a data receiving and converting module, 3, a centralized processing module, 4, an information transmission module, 5, a timing detection module, 6, a time service updating module, 7, a data storage module, 8, a power supply module, 9, a display module, 10, an automatic detection unit, 11, a manual detection unit, 12, an analysis processing unit, 13, a time service data acquisition unit, 14, a conversion data acquisition unit, 15, an in-station data acquisition unit, 16, an external power supply unit, 17 and an internal energy storage unit.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

A centralized time synchronization management system of a transformer substation is shown in figure 1 and comprises a positioning time service module 1, a data receiving and converting module 2, a centralized processing module 3, an information transmission module 4 used for carrying out time information interaction with transformer substation equipment, a timing detection module 5 and a time synchronization updating module 6, wherein the positioning time service module 1 is connected with the data receiving and converting module 2, and the timing detection module 5 is connected with the information transmission module 4. The timing detection module 5 comprises an automatic detection unit 10 and a manual detection unit 11, and both the automatic detection unit 10 and the manual detection unit 11 are connected with the information transmission module 4. When the transformer substation performs important operation, such as fault recovery or after completion of maintenance, active transformer substation equipment time setting management can be performed through the manual detection unit 11, waiting for the automatic detection unit 10 is not needed, and autonomy of the management system is enhanced.

The positioning time service module 1, the data receiving conversion module 2, the information transmission module 4 and the time synchronization updating module 6 are all connected with the centralized processing module 3, the positioning time service module 1 can be a medium ATGM332D satellite positioning time service module, the module can work at the temperature of minus 40-85 ℃, the receiving sensitivity is as high as minus 160dBm, the Beidou/GPS satellite positioning signals can be received only by placing a receiving antenna mushroom head outside a window, and the module is provided with an EEPROM and a battery and can store ephemeris data. The standard SMA antenna interface can be switched, the wiring is flexible, accurate and quick, the power consumption is low, and the working requirements of the transformer substation are met.

The data receiving and converting module 2 can receive Beidou/GPS dual-mode satellite signals as external reference signals through an internal B code receiving module, time frequency synchronization is carried out on the module by using external time frequency signals, an STM32F4 single chip microcomputer is adopted to finish the acquisition, demodulation and generation of the time signals, IRIG-B (DC) code signals and 1PPS (second signal) synchronization pulse signals are generated. And the photoelectric conversion modules (HFBR-2412 and HFBR-1414) and the SNTP module are integrated on the PCB. The module carries out photoelectric interconversion on the input IRIG-B code electric signal or optical signal, namely the IRIG-B electric signal is input to output an IRIG-B code optical signal, the IRIG-B optical signal is input to output an IRIG-B code electric signal, and the module has the advantages of high voltage isolation, electromagnetic interference resistance, lightning stroke resistance and the like.

The centralized processing module 3 comprises an analysis processing unit 12, a time service data acquisition unit 13, a conversion data acquisition unit 14 and an in-station data acquisition unit 15, wherein the analysis processing unit 12 is respectively connected with the time service data acquisition unit 13, the conversion data acquisition unit 14 and the in-station data acquisition unit 15, the time service data acquisition unit 13 is connected with the positioning time service module 1, the conversion data acquisition unit 14 is connected with the data receiving and converting module 2, and the in-station data acquisition unit 15 is connected with the information transmission module 4. The in-station data acquisition unit 15, the time service data acquisition unit 13 and the conversion data acquisition unit 14 are used for respectively acquiring in-station equipment time data, satellite time service data and time service converted data, the in-station equipment time data, the satellite time service data and the time service converted data are integrated through the analysis processing unit 12 to be sampled and compared with each other, and centralized processing is carried out when the equipment time service system fails.

The embodiment also comprises a data storage module 7 for storing the time tick system management record, a power supply module 8 and a display module 9, wherein the data storage module 7 is connected with the analysis processing unit 12. The data storage module 7 stores the data of the time setting calibration records of the management system, so that the time setting fault reasons can be conveniently extracted and analyzed at the later stage, and the centralized management system is perfected. The power supply module 8 comprises an external power supply unit 16 and an internal energy storage unit 17, the external power supply unit 16 is connected with the centralized processing module 3, and the internal energy storage unit 17 is respectively connected with the external power supply unit 16 and the centralized processing module 3. The power is supplied by two power supply modes of the external power supply unit and the internal power supply unit, and the external power supply unit is powered by the internal power supply unit when the external power supply unit is powered off, so that the influence of external power off on the system is prevented. The internal energy storage unit 17 may use a rechargeable lithium battery for energy storage, and the internal energy storage unit 17 is connected to the external power supply unit 16 for charging the lithium battery. The display module 9 is connected with the centralized processing module 3. Display module 9 can adopt liquid crystal display, and display module 9 mainly used shows the data of each moment that centralized processing module 3 collected, and the operator of being convenient for looks over more directly perceivedly whether centralized management system goes wrong.

A centralized time setting management method for a transformer substation utilizes the system, as shown in FIG. 2, and comprises the following steps:

s1: the timing detection module 5 sends a detection signal to the information transmission module 4;

s2: the method comprises the steps that time data of the substation equipment are collected through an information transmission module 4, and the collected data are transmitted to a centralized processing module 3;

s3: the centralized processing module 3 acquires satellite positioning time service data through the positioning time service module 1;

s4: the data receiving and converting module 2 carries out data conversion on the data received by the positioning time service module 1 and transmits the converted data to the centralized processing module 3;

s5: the centralized processing module 3 receives the time data of each module, and the data comparison is carried out through the analysis processing unit 12;

s6: when the substation equipment time synchronization system is detected to have faults, time synchronization data calibration correction is carried out on the substation equipment through the time synchronization updating module 6.

The centralized processing module 3 detects the data of the positioning time service module 1 and the data receiving conversion module 2 through the time service data acquisition unit 13 and the conversion data acquisition unit 14, and when the data of the positioning time service module 1 and the data receiving conversion module 2 are consistent, the positioning time service module 1 and the data receiving conversion module 2 do not have faults. When the data of the positioning time service module 1 and the data receiving conversion module 2 are different from the time data of the substation equipment acquired by the information transmission module 4, it is described that the time synchronization system on the substation equipment fails, the centralized processing module 3 updates and corrects the equipment time when the substation equipment is idle through the time synchronization updating module 6, namely, the correct time is transmitted to the substation equipment through the time synchronization updating module 6, the time of the substation equipment is updated, and the centralized management of the time failure of the substation equipment is realized.

In the embodiment, the timing detection module 5 sends a detection signal to the information transmission module 4; the method comprises the steps that time data of the substation equipment are collected through an information transmission module 4, and the collected data are transmitted to a centralized processing module 3; the centralized processing module 3 acquires satellite positioning time service data through the positioning time service module 1; the data receiving and converting module 2 carries out data conversion on the data received by the positioning time service module 1 and transmits the converted data to the centralized processing module 3; the centralized processing module 3 receives the time data of each module, and the data comparison is carried out through the analysis processing unit 12; when the substation equipment time synchronization system is detected to have faults, time synchronization data of the substation equipment is calibrated and corrected through the time synchronization updating module 6, and centralized management of all modules of the time synchronization system is achieved.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.