CN117221159A

CN117221159A - Converter station time synchronization monitoring method, device, computer equipment and storage medium

Info

Publication number: CN117221159A
Application number: CN202311426815.1A
Authority: CN
Inventors: 李阳; 高雨杰; 杨礼太; 李有有; 禹晋云; 余荣兴; 封常贤; 周国恩; 王金玉; 李强; 徐宏争; 郗家峰; 薛佳琦; 刘志强
Original assignee: Dali Bureau of Extra High Voltage Transmission Co
Current assignee: Dali Bureau of Extra High Voltage Transmission Co
Priority date: 2023-10-31
Filing date: 2023-10-31
Publication date: 2023-12-12

Abstract

The application relates to a method, a device, computer equipment, a storage medium and a computer program product for synchronous monitoring of converter station time, which can be used in the technical field of electric power. The method comprises the following steps: performing time synchronization deviation monitoring on monitored equipment in the converter station by using a plurality of time synchronization deviation monitoring modes to obtain a time synchronization deviation value of the monitored equipment; the time deviation value of the monitored equipment is used for representing the time difference value between the monitored equipment and the main clock equipment in the converter station; identifying the time setting deviation value of the monitored equipment by using a preset time setting deviation threshold value condition to obtain a first time synchronization monitoring result of the monitored equipment; determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment; and determining the time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result. By adopting the method, the efficiency of time synchronization monitoring can be improved.

Description

Converter station time synchronization monitoring method, device, computer equipment and storage medium

Technical Field

The present application relates to the field of power technology, and in particular, to a method, an apparatus, a computer device, a storage medium, and a computer program product for synchronous monitoring of a converter station time.

Background

With the development of power technology, time synchronization technology has important applications in power systems. The current situation of the time difference of the equipment can be known by analyzing the time synchronization conditions of different equipment, and the method has important significance for the data processing and analysis of the power system. Therefore, how to efficiently perform time synchronization monitoring is an important research direction.

The traditional technology is that technicians usually carry out manual time synchronization monitoring on equipment; however, this method of time synchronization monitoring requires a lot of manual processing time, resulting in low efficiency of time synchronization monitoring.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a method, an apparatus, a computer device, a computer readable storage medium, and a computer program product for time synchronization monitoring of a converter station that can improve the efficiency of time synchronization monitoring.

In a first aspect, the application provides a method for synchronously monitoring the time of a converter station. The method comprises the following steps:

Performing time synchronization deviation monitoring on monitored equipment in a converter station by using a plurality of time synchronization deviation monitoring modes to obtain a time synchronization deviation value of the monitored equipment; the time setting deviation value of the monitored equipment is used for representing the time difference value between the monitored equipment and a main clock equipment in the converter station;

identifying the time synchronization deviation value of the monitored equipment by using a preset time synchronization deviation threshold condition to obtain a first time synchronization monitoring result of the monitored equipment;

determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment;

and determining the time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result.

In one embodiment, the plurality of time bias monitoring modes includes a first time bias monitoring mode and a second time bias monitoring mode; the monitored equipment comprises slave clock equipment and time service equipment of different levels in the converter station;

the method for monitoring the time deviation of the monitored equipment in the converter station by using a plurality of time deviation monitoring modes, to obtain the time deviation value of the monitored equipment, comprises the following steps:

Performing time synchronization deviation monitoring on the slave clock equipment by the first time synchronization deviation monitoring mode to obtain a time synchronization deviation value of the slave clock equipment;

and performing time synchronization deviation monitoring on the time-service equipment of different levels by the first time synchronization deviation monitoring mode and the second time synchronization deviation monitoring mode to obtain time synchronization deviation values of the time-service equipment of different levels.

In one embodiment, the performing, by the first time bias monitoring manner and the second time bias monitoring manner, time bias monitoring on the time-stamped devices of the different levels to obtain time bias values of the time-stamped devices of the different levels includes:

determining time setting deviation monitoring modes corresponding to the time-set equipment of different levels;

and aiming at each time-given device, according to the hierarchy of the time-given device, performing time-versus-time deviation monitoring on the time-given device by using the first time-versus-time deviation monitoring mode or the second time-versus-time deviation monitoring mode to obtain the time-versus-time deviation value of the time-given device.

In one embodiment, the performing, according to the hierarchy to which the device to be time-stamped belongs, time-stamped monitoring on the device to be time-stamped by using the first time-stamped monitoring method or the second time-stamped monitoring method to obtain a time-stamped value of the device to be time-stamped includes:

Determining a time synchronization deviation monitoring mode corresponding to the time-service equipment according to the hierarchy of the time-service equipment;

controlling the master clock device to perform communication interaction with the time service device under the condition that the corresponding time delay deviation monitoring mode is the first time delay deviation monitoring mode, so as to obtain a corresponding communication interaction time stamp;

and determining the time setting deviation value of the time-service equipment according to the communication interaction time stamp.

In one embodiment, after determining, according to the hierarchy to which the device to be time-stamped belongs, a time-tick bias monitoring mode corresponding to the device to be time-stamped, the method further includes:

acquiring a standard code stream signal and a code stream signal generated by the time service equipment under the condition that the corresponding time delay deviation monitoring mode is the second time delay deviation monitoring mode;

and determining the time setting deviation value of the time-given equipment according to the standard code stream signal and the code stream signal generated by the time-given equipment.

In one embodiment, after determining the time synchronization monitoring result of the monitored device according to the first time synchronization monitoring result and the second time synchronization monitoring result, the method further includes:

Generating corresponding alarm information according to the time synchronization monitoring result under the condition that the time synchronization monitoring result indicates abnormality;

and uploading the alarm information to a monitoring system of the converter station.

In a second aspect, the application also provides a device for monitoring the time synchronization of the converter station. The device comprises:

the device monitoring module is used for monitoring the time deviation of the monitored device in the converter station through a plurality of time deviation monitoring modes to obtain a time deviation value of the monitored device; the time setting deviation value of the monitored equipment is used for representing the time difference value between the monitored equipment and a main clock equipment in the converter station;

the deviation recognition module is used for recognizing the time deviation value of the monitored equipment by utilizing a preset time deviation threshold condition to obtain a first time synchronization monitoring result of the monitored equipment;

the first determining module is used for determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment;

and the second determining module is used for determining the time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result.

In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of:

According to the method, the device, the computer equipment, the storage medium and the computer program product for synchronously monitoring the time of the converter station, the time deviation of the monitored equipment in the converter station is monitored by a plurality of time deviation monitoring modes, and the time deviation value of the monitored equipment is obtained; the time setting deviation value of the monitored equipment is used for representing the time difference value between the monitored equipment and a main clock equipment in the converter station; identifying the time synchronization deviation value of the monitored equipment by using a preset time synchronization deviation threshold condition to obtain a first time synchronization monitoring result of the monitored equipment; determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment; and determining the time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result. According to the scheme, time setting deviation monitoring is carried out on monitored equipment in a converter station through a plurality of time setting deviation monitoring modes, time setting deviation values of the monitored equipment are obtained, and the time setting deviation values represent time differences between the monitored equipment and main clock equipment in the converter station; identifying the time synchronization deviation value of the monitored equipment by utilizing a preset time synchronization deviation threshold condition to obtain a first time synchronization monitoring result of the monitored equipment; determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment; determining a time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result; through the steps, the time synchronization condition of the monitored equipment in the converter station can be accurately monitored, and corresponding monitoring results are obtained according to the time synchronization deviation value and the self-checking information, so that the time synchronization accuracy of the equipment in the converter station can be ensured, the performance and the reliability of the system are improved, and the efficiency and the accuracy of the time synchronization monitoring are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a flow chart of a method for monitoring time synchronization of a converter station according to an embodiment;

fig. 2 is a schematic diagram of a first architecture of a method for monitoring time synchronization of a converter station according to an embodiment;

fig. 3 is a schematic diagram of a second architecture of a method for monitoring time synchronization of a converter station according to an embodiment;

FIG. 4 is a schematic diagram of time bias monitoring in one embodiment;

FIG. 5 is a flow chart illustrating code stream correction according to one embodiment;

FIG. 6 is a schematic diagram of a comparator in one embodiment;

FIG. 7 is a schematic diagram of a clock master unit according to an embodiment;

FIG. 8 is a schematic diagram of monitoring a presentation end function in one embodiment;

fig. 9 is a block diagram of a converter station time synchronization monitoring device in one embodiment;

Fig. 10 is an internal structural view of a computer device in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are both information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data are required to meet the related regulations.

In an exemplary embodiment, as shown in fig. 1, a method for monitoring time synchronization of a converter station is provided, and the embodiment is applied to a terminal for illustration by the method; it will be appreciated that the method may also be applied to a server, and may also be applied to a system comprising a terminal and a server, and implemented by interaction between the terminal and the server. The terminal can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers and the like; the server may be implemented as a stand-alone server or as a server cluster composed of a plurality of servers. In this embodiment, the method includes the steps of:

Step S101, performing time setting deviation monitoring on monitored equipment in a converter station by using a plurality of time setting deviation monitoring modes to obtain a time setting deviation value of the monitored equipment; the time-to-time offset value of the monitored device is used to represent a time difference value between the monitored device and a master clock device within the converter station.

A converter station is a device in an electrical power system for converting alternating current into direct current (or vice versa).

The time-to-time deviation may be a time difference value between the monitored device and the master clock device, which indicates a degree of difference between the clocks of the monitored device and the master clock device.

Optionally, the terminal monitors the time deviation of the monitored device in the converter station by using multiple time deviation monitoring modes, such as NTP (network time protocol) mode, GOOSE (wide area operation state acquisition protocol) mode, code stream (such as B-code, a standard time code format) mode, and the like, and obtains a time deviation value of the monitored device, where the time deviation value represents a time difference value between the monitored device and a master clock device in the converter station.

Step S102, the time setting deviation value of the monitored equipment is identified by utilizing a preset time setting deviation threshold value condition, and a first time synchronization monitoring result of the monitored equipment is obtained.

The preset time synchronization deviation threshold condition may be a time synchronization deviation threshold set in advance according to a system requirement and a performance index, and by comparing the time synchronization condition with the preset threshold, it may be determined whether the time synchronization condition of the monitored device is within an acceptable range.

Optionally, the terminal identifies the obtained time synchronization deviation value of the monitored equipment by using a time synchronization deviation threshold condition preset in the memory, and obtains a first time synchronization monitoring result of the monitored equipment.

Step S103, determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment.

The self-checking information can be information which is generated by the monitored equipment and used for detecting the running state and performance of the equipment, and can comprise the working state of the equipment, fault information, clock calibration results and the like, and the self-checking information can be used for evaluating the time synchronization condition of the monitored equipment.

Optionally, the terminal determines a second time synchronization monitoring result of the monitored device according to the self-checking information received from the monitored device and stored in the memory.

Step S104, determining the time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result.

Optionally, the terminal determines the time synchronization monitoring result of the monitored equipment through logic operation according to the first time synchronization monitoring result and the second time synchronization monitoring result, and outputs or stores the result.

In the synchronous time monitoring method of the converter station, the time synchronization deviation monitoring is carried out on the monitored equipment in the converter station by a plurality of time synchronization deviation monitoring modes, so that the time synchronization deviation value of the monitored equipment is obtained; the time deviation value of the monitored equipment is used for representing the time difference value between the monitored equipment and the main clock equipment in the converter station; identifying the time setting deviation value of the monitored equipment by using a preset time setting deviation threshold value condition to obtain a first time synchronization monitoring result of the monitored equipment; determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment; and determining the time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result. According to the scheme, time setting deviation monitoring is carried out on monitored equipment in a converter station through a plurality of time setting deviation monitoring modes, time setting deviation values of the monitored equipment are obtained, and the time setting deviation values represent time differences between the monitored equipment and main clock equipment in the converter station; identifying the time synchronization deviation value of the monitored equipment by utilizing a preset time synchronization deviation threshold condition to obtain a first time synchronization monitoring result of the monitored equipment; determining a second time synchronization monitoring result of the monitored equipment according to the self-checking information of the monitored equipment; determining a time synchronization monitoring result of the monitored equipment according to the first time synchronization monitoring result and the second time synchronization monitoring result; through the steps, the time synchronization condition of the monitored equipment in the converter station can be accurately monitored, and corresponding monitoring results are obtained according to the time synchronization deviation value and the self-checking information, so that the time synchronization accuracy of the equipment in the converter station can be ensured, the performance and the reliability of the system are improved, and the efficiency and the accuracy of the time synchronization monitoring are improved.

In an exemplary embodiment, in step S101, the time deviation monitoring is performed on the monitored device in the converter station by using multiple time deviation monitoring modes, so as to obtain a time deviation value of the monitored device, which specifically includes the following contents: the method comprises the steps of monitoring time deviation of slave clock equipment in a first time deviation monitoring mode to obtain a time deviation value of the slave clock equipment; and performing time setting deviation monitoring on the time-supplied devices of different levels through a first time setting deviation monitoring mode and a second time setting deviation monitoring mode to obtain time setting deviation values of the time-supplied devices of different levels.

The time deviation monitoring method comprises a first time deviation monitoring method and a second time deviation monitoring method.

The monitored equipment comprises slave clock equipment in the converter station and time service equipment of different levels.

The first time deviation monitoring method may be a method of monitoring the time deviation of the device in a specific manner, for example, an NTP method or a GOOSE method.

The second time bias monitoring mode may be another mode of performing time bias monitoring on the device different from the first time bias monitoring mode, for example, code stream monitoring (B-code monitoring) and the like.

The slave clock device may be a clock device that provides a time synchronization signal to other devices within the converter station.

The devices at different levels to be clocked may be devices for receiving a time synchronization signal in the converter station, and may include devices at different levels, such as a bay level device and a process level device.

Optionally, the terminal monitors the time deviation of the slave clock equipment in the converter station in a first time deviation monitoring mode, and obtains a time deviation value of the slave clock equipment; and performing time setting deviation monitoring on the time-supplied equipment of different levels in the converter station by using a first time setting deviation monitoring mode and a second time setting deviation monitoring mode, and obtaining time setting deviation values of the time-supplied equipment of different levels.

According to the technical scheme, time synchronization monitoring of the monitored equipment of different levels in the converter station is achieved, time difference values between the monitored equipment and the main clock equipment can be obtained through time synchronization deviation monitoring of the monitored equipment, and whether the time synchronization states of the monitored equipment are normal or not is judged, so that efficiency and accuracy of time synchronization monitoring are improved.

In an exemplary embodiment, the first time deviation monitoring method and the second time deviation monitoring method are used for monitoring time deviations of the time-service devices of different levels, so as to obtain time deviation values of the time-service devices of different levels, and specifically include the following contents: determining time setting deviation monitoring modes corresponding to time service equipment of different levels; and aiming at each time-given device, according to the hierarchy of the time-given device, performing time-versus-time deviation monitoring on the time-given device by a first time-versus-time deviation monitoring mode or a second time-versus-time deviation monitoring mode to obtain the time-versus-time deviation value of the time-given device.

The different levels may be different levels of the time service equipment in the converter station according to the functions and importance of the time service equipment, such as a process layer, a spacer layer and the like.

Optionally, the terminal determines a first time synchronization deviation monitoring mode and a second time synchronization deviation monitoring mode corresponding to the time service equipment of different levels, wherein the first time synchronization deviation monitoring mode can be an NTP monitoring mode or a GOOSE monitoring mode, and the second time synchronization deviation monitoring mode can be a B code monitoring mode; and aiming at each time-controlled device, obtaining the affiliated hierarchy by inquiring the information of the time-controlled device, judging whether to apply a first time-setting deviation monitoring mode (NTP monitoring mode or GOOSE monitoring mode) or a second time-setting deviation monitoring mode (B code monitoring mode) to monitor according to the affiliated hierarchy of the time-controlled device, applying the corresponding first time-setting deviation monitoring mode or second time-setting deviation monitoring mode to monitor the time-setting deviation of the time-controlled device, and acquiring and recording the time-setting deviation value of the time-controlled device.

According to the technical scheme, time synchronization monitoring of time-controlled equipment of different levels is achieved, the time-controlled equipment is equipment for receiving time synchronization signals in a converter station, different time-setting deviation monitoring modes are adopted for monitoring according to the levels of the time-setting deviation monitoring equipment, time difference values between the time-setting deviation monitoring equipment and a main clock equipment can be obtained through time-setting deviation monitoring of the time-setting deviation monitoring equipment, and whether the time synchronization states of the time-setting deviation monitoring equipment and the main clock equipment are normal or not is judged, so that the efficiency and the accuracy of time synchronization monitoring are improved.

In an exemplary embodiment, according to a hierarchy to which the device to be time-transferred belongs, the device to be time-transferred is time-offset monitored by using a first time-offset monitoring mode or a second time-offset monitoring mode, so as to obtain a time-offset value of the device to be time-transferred, which specifically includes the following contents: determining a time synchronization deviation monitoring mode corresponding to the time-service equipment according to the hierarchy to which the time-service equipment belongs; when the corresponding time deviation monitoring mode is the first time deviation monitoring mode, controlling the master clock equipment to perform communication interaction with the time-service equipment to obtain a corresponding communication interaction time stamp; and determining the time setting deviation value of the time-given equipment according to the communication interaction time stamp.

The master clock device may be a clock device that provides a time synchronization signal for the time-clocked device.

The communication interaction time stamp may be a time stamp of a request sent by the master clock device and a time stamp of a response received by the time service device in the monitoring process, and the time stamp of the request sent by the time service device and the response received by the time service device, for example, the communication interaction time stamp includes four time stamps, namely a first time stamp, a second time stamp, a third time stamp and a fourth time stamp, wherein the first time stamp is a time stamp of the request sent by the master clock device to the time service device, the second time stamp is a time stamp of the request received by the time service device from the master clock device, the third time stamp is a time stamp of the request sent by the time service device to the master clock device after the time stamp of the request sent by the master clock device is received by the time service device, and the fourth time stamp is a time stamp of the request sent by the time service device from the master clock device.

Optionally, the terminal determines a first time deviation monitoring mode or a second time deviation monitoring mode corresponding to the device to be time-controlled according to the hierarchy to which the device to be time-controlled belongs, if the first time deviation monitoring mode corresponds to the first time deviation monitoring mode, controls the master clock device to perform communication interaction with the device to be time-controlled through an NTP protocol, records a timestamp in the communication interaction process, including a request timestamp (a timestamp for sending a request) and a response timestamp (a timestamp for receiving the request), calculates a time difference value between the device to be time-controlled and the master clock device according to the request timestamp and the response timestamp, and records the time deviation value of the device to be time-controlled.

According to the technical scheme, the time synchronization deviation monitoring is carried out on the time-service equipment in the first time synchronization deviation monitoring mode, so that the time synchronization deviation value of the time-service equipment can be obtained efficiently and accurately, and the time synchronization monitoring efficiency and accuracy are improved.

In an exemplary embodiment, after determining, according to the hierarchy to which the device to be time-stamped belongs, the time-tick offset monitoring mode corresponding to the device to be time-stamped, the method further includes the following: under the condition that the corresponding time deviation monitoring mode is a second time deviation monitoring mode, acquiring a standard code stream signal and a code stream signal generated by time service equipment; and determining the time setting deviation value of the time-given equipment according to the standard code stream signal and the code stream signal generated by the time-given equipment.

The standard code stream signal may be a time synchronization signal (e.g., a code stream signal) generated by a master clock device, and used as a reference signal.

The code stream signal generated by the time-given device may be a time synchronization signal (such as a code stream signal) generated by the time-given device according to its own running time.

Optionally, the terminal determines a first time deviation monitoring mode or a second time deviation monitoring mode corresponding to the terminal according to the hierarchy of the time-stamped equipment, obtains a standard code stream signal and a code stream signal generated by the time-stamped equipment if the terminal corresponds to the second time deviation monitoring mode (B code monitoring mode), and determines a time deviation value of the time-stamped equipment according to the standard code stream signal and the code stream signal generated by the time-stamped equipment.

For example, the terminal determines a first time deviation monitoring mode or a second time deviation monitoring mode corresponding to the device to be time-stamped according to the level and the position of the device to be time-stamped, if the second time deviation monitoring mode corresponds to the first time deviation monitoring mode, the clock monitoring board (the clock monitoring board may be used for acquiring and comparing code stream signals generated by different clock devices) acquires a standard code stream signal generated by the master clock device, the clock monitoring board acquires the code stream signal generated by the device to be time-stamped according to the running time of the device to be time-stamped from the device to be time-stamped, and compares the standard code stream signal with the code stream signal generated by the device to be time-stamped through the hardware comparator to determine the time deviation value of the internal clock of the device to be time-stamped relative to the master clock.

According to the technical scheme, the time synchronization deviation monitoring is carried out on the time-service equipment through the second time synchronization deviation monitoring mode, so that the time synchronization deviation value of the time-service equipment can be obtained efficiently and accurately, and the time synchronization monitoring efficiency and accuracy are improved.

In an exemplary embodiment, the step S104 further includes a step of sending alarm information after determining the time synchronization monitoring result of the monitored device according to the first time synchronization monitoring result and the second time synchronization monitoring result, and specifically includes the following steps: under the condition that the time synchronization monitoring result shows abnormality, corresponding alarm information is generated according to the time synchronization monitoring result; and uploading the alarm information to a monitoring system of the converter station.

The alarm information may be information generated when an abnormal situation is found in the time synchronization monitoring process, and is used for notifying an operator to process.

The monitoring system can be a system for monitoring and managing the running state of the converter station equipment, and can receive and process alarm information from each equipment in real time.

Optionally, the terminal determines a time synchronization monitoring result of the monitored device according to the first time synchronization monitoring result and the second time synchronization monitoring result, if the time synchronization monitoring result indicates abnormality, generates corresponding alarm information according to the time synchronization monitoring result, where the alarm information may include an identifier of the monitored device, an abnormality type, an abnormality degree, and the like, and sends the generated alarm information to a monitoring system of the converter station, so that an operator can timely obtain the abnormality information and take corresponding measures.

According to the technical scheme provided by the embodiment, the generated alarm information is sent to the monitoring system of the converter station under the condition that the time synchronization monitoring result shows abnormality, so that the feedback timeliness and the alarm efficiency of the time synchronization monitoring are improved.

The method for synchronously monitoring the time of the converter station is illustrated by an application example, and the application example is applied to a terminal for illustration by the method, and comprises the following main steps:

first, as shown in fig. 2, the terminal configures an overall first architecture, including: the anti-time service interference device comprises an anti-time service interference device, an input end, a processing end, an output end, a display end, a converter station display, a regulation and control center display, a monitoring unit board, a first monitoring device, a second monitoring device and a third monitoring device.

A second step, shown in fig. 3, of configuring a second architecture of the system level of the control-end-converter station by the terminal, comprising: the control center clock monitoring display end, a trusted clock source, a data network, a converter station clock monitoring display end, a first telemechanical device, a second telemechanical device, a wireless network bridge device, an anti-unmanned aerial vehicle time service device, a network, a master clock 1, a master clock 2, a monitoring board, time service equipment, a slave clock, interval time service equipment and process layer time service equipment.

The time monitoring system is designed on the side of the converter station, and comprises: the converter station clock monitoring display end, the telecontrol equipment, the network bridge equipment, the master clock 1, the master clock 2 and the slave clocks are several, and the secondary equipment is divided into a spacer layer equipment, a process layer equipment and the like. The time monitoring system design control center side is provided with: the trusted clock source and the control center clock monitor display end. The method for monitoring the converter station clock comprises the following steps: and NTP, GOOSE, B code monitoring is selected for monitoring.

The network equipment such as a station control layer workstation and a server is preferentially monitored by using an NTP monitoring mode, a master clock and a slave clock polling mode acquire the time setting deviation of the monitored device, and the network equipment also has time setting deviation monitoring alarm threshold setting and out-of-limit alarm.

The method is characterized in that the time service equipment of the process layer is preferably subjected to clock monitoring in modes of NTP, GOOSE monitoring and the like.

The time service equipment of the spacer layer equipment is preferably monitored by adopting modes such as NTP (network time protocol) and B code monitoring.

Wherein, the newly added clock monitoring board functions: the main clock comprises a monitoring and uploading module and is responsible for collecting and uploading data information on all clock devices in the converter station. The master clock 2 collects the body information and monitoring information of the master clock 1 and other slave clocks through 61850 protocols, and the body information and the monitoring information are sent to the converter station clock monitoring display end.

The safety protection isolation measure of the input end comprises the following steps: the anti-deception and anti-interference capabilities of the time synchronization system are improved, and the satellite receiving antenna is accessed to the space-time safety isolation device through a radio frequency line and then accessed to the GPS module of the time synchronization device through the radio frequency line. The space-time safety isolation device is a firewall established between the satellite navigation signal and the time service system, monitors and alarms the satellite navigation signal quality in real time, actively isolates signals affecting the time service safety, and greatly improves the safety and the anti-attack capability of the time service system. The entry and exit of the external time source does not cause a jump in the output time.

Wherein, the NTP mode or GOOSE mode monitoring mode: basic principle of monitoring: the time synchronization device and the time service equipment monitor the time deviation in an NTP mode or a GOOSE mode, and the time deviation is calculated in a question-answer mode by a management end and a monitored end. Time deviation monitoring referring to fig. 4, the clock device is used as a monitoring managing end, the slave clock and other time-supplied devices are used as monitored ends, in order to improve the accuracy of time deviation, the optimal master clock algorithm is embedded, the master clock (with a request end application function) periodically multicasts a message containing a time stamp through a communication protocol, the synchronous slave clock (with a response application function) sends a message to the master clock (for example, by a single frame sending service, a request command and a response command are generated), the slave clock calculates a deviation with the master clock and a mechanism of line delay synchronous message transmission as a 'delay-request' according to the received time information and the time of sending the message by itself, the time management end at the time T0 sends a time mark of the 'monitoring clock request', the monitored end receives the time mark of the 'monitoring clock request', the monitored end returns the time mark of the 'monitoring clock request' at the time T2, the management end receives the time mark of the 'monitoring clock request', the deviation is calculated in a 'request-response' mode, the result is that the clock of the management end leads the clock difference (positive relative lead and negative relative lag) of the internal clock of the monitored device, the time difference precision is in millisecond level, the clock of the management end leads the clock difference of the internal clock of the monitored device to be deltat= [ (T3-T2) + (T0-T1) ]/2, wherein T0 represents the time mark of the 'monitoring clock request' sent by the management end, T1 represents the time mark of the 'monitoring clock request' received by the monitored end, T2 represents the time mark of the 'monitoring clock request' returned by the monitored end, t3 indicates the time scale of the monitoring clock request result received by the management end, deltat indicates the clock difference (positive is relatively advanced, negative represents relatively retarded) of the internal clock of the monitored device of the management end clock advance, the monitoring module periodically polls the time-setting deviation of each monitored device according to a set polling period, when a certain device is polled for limiting the monitoring value, the monitoring module continuously monitors 5 times with a period of 1 time/s, takes the average value of the 5 times of results after the extremum is removed as the monitoring result, and generates out-of-limit alarm information if the average value is out-of-limit.

Wherein, the B code monitoring mode: the generation of the B code signal of the converter station device is to monitor the operation time of the converter station device, the converter station device needs to generate an IRIG-B signal (i.e. a B code signal, a code stream signal and a time synchronization code stream signal) in the device according to the operation time of the device, and the IRIG-B signal is output to a clock monitoring board through a channel of the device itself to require direct current. After receiving the time setting signal, the converter station equipment is required to correct sampling pulse first, then the equipment soft clock correction is carried out to ensure that the sampling pulse of the secondary operation equipment of the whole converter station is unified, the code stream correction flow refers to fig. 5, the received code stream time setting signal is corrected and sampling pulse is carried out, the code stream signal is generated and output, and the soft clock monitoring of the clock monitoring board is carried out. The comparator refers to fig. 6, the clock monitoring board is connected to the IRIG-B code signal of the converter station operation equipment to be monitored and the standard B code signal generated by the clock synchronization device equipment at the same time, the IRIG-B code signal generated by each operation equipment forms a B code pair (clock synchronization device code stream, operation device code stream 1, operation device code stream 2, operation device code stream 3, operation device code stream N, where N is represented as a number) with the standard B code signal at the B code comparing device, and the hardware comparator (comparator 1, comparator 2, comparator 3, comparator N, where N is represented as a number) compares the signals, when the B code signals are different, the comparator automatically outputs a high level signal, and the high level signal is directly connected to the clock monitoring board. The optical fiber wire harness of the time synchronization detection device is connected to the clock monitoring board, and the corresponding time deviation of the operation device is monitored through real-time acquisition of optical fiber signals. When the optical fiber information is found to be input abnormally, the operation equipment time abnormality corresponding to the interface can be judged, and the time synchronization detection equipment sends out alarm information.

Wherein, the clock device cooperates the principle with the monitoring board: the clock monitoring board is additionally arranged to be connected into the main clock device, and the modified clock device and the time service device meet the related requirements. The clock monitoring board is provided with a hardware interface, a data model, an information interaction function, a configuration file and the like which are matched with the original clock device, so that comprehensive judgment and processing of effective states such as a time source signal effectiveness mark, time phase continuity, time message continuity and time deviation of the time service device are ensured, the station time synchronization state monitoring requirement is met, and the time synchronization monitoring requirement of the time service device and the time synchronization device is realized. The characteristics are as follows: and (3) modularization of the board card: realizing the synchronization generalization and standardization with the clock and the reasonable configuration of interface resources; interface diversification: the system running state is output, and a plurality of modes are accessed into the whole network synchronous clock monitoring system, and an interface mode is provided with NTP, GOOSE, B codes, wireless data transmission and an isochronous synchronous monitoring interface; maintenance convenience: all modules support hot plug and automatic detection, so that the system is convenient to maintain online, and the clock device is ensured to work continuously and reliably.

The clock master control unit refers to fig. 7, and includes a power panel, a central processing unit board, a receiving unit board 1, a receiving unit board 2 and a newly added monitoring board, which can receive a time service source.

The monitoring display end function refers to fig. 8, and comprises configuration management, state monitoring, data storage, alarm management, statistical analysis and maintenance management, wherein the state management comprises a communication state, a deviation state and device information. The control center clock monitoring display end can receive and display the converter station side information, and the monitoring end has the functions of configuration management, monitoring state, data storage, alarm management, statistical analysis, upgrading maintenance and the like. The control center display end monitoring state function mainly comprises: the system comprises equipment account information, communication state, NTP state, zhong Chazhi, acquisition module information, satellite receiving and initializing, power supply state information and the like. The function of monitoring the state of the display end of the converter station end mainly comprises the following steps: the converter station side clock network and the communication state, the time-service device list, the clock body device information, the time-service equipment clock difference value, the visualized time-service device list, the visualized communication state, the time-service equipment name, the time-service equipment number, whether the time deviation is out of limit and other information. And (3) functional design: (1) basic functions: the clock monitoring board has the functions of time synchronization deviation, device self-checking information early warning, data calling, automatic uploading, abnormal alarming, information uploading and the like. Time synchronization deviation: and acquiring the time synchronization deviation function of the monitored device in an NTP or GOOSE mode, wherein the monitoring precision of the NTP and the GOOSE is not more than 2.5ms. The time setting deviation of the monitored equipment is monitored in a polling mode, the polling period is set to be 1 hour, and the time setting deviation of the monitored equipment is periodically polled according to the polling period; the time synchronization deviation monitoring alarm threshold setting and adjusting function is provided. And (5) data calling and uploading: the system has the functions of data calling uploading and overrun automatic uploading. The time synchronization device should send the self-checking information of the clock device and the monitoring information of the in-station equipment to the monitoring system through a specific protocol. And (5) sending abnormal alarms and information: when the monitoring module of the time synchronization device finds that the time synchronization of the monitored equipment is abnormal, an alarm is generated, and alarm information is sent to the monitoring system. If no device with abnormal time setting is found in the monitoring process, time synchronization monitoring working state of the clock device and time deviation monitoring normal signals of all monitored devices are sent to the monitoring system at regular time according to a set period, and the time synchronization state of the time synchronization device in the station and the time-service equipment is normal.

Wherein, the data link: the clock device pair: communication link 1: and (3) setting up a link for communication with a telemechanical device, carrying out monitoring by a telemechanical 104 mode, and configuring clock monitoring configuration for telemechanical configuration. Communication link 2: the up communication is realized by a wireless WAPI (wireless network access interface) networking mode. The clock device pair is as follows: the slave clock and the time-service equipment clock information are monitored, and various monitoring is obtained through 61850.

And thirdly, the terminal performs time synchronization monitoring of the converter station according to the architecture and the mode.

Wherein the GPS (global positioning system) input channel employs security isolation measures, such as incorporating anti-time service devices. The application example utilizes B code time synchronization detection and a monitoring principle design scheme thereof; and using the wireless WAPI as a second path of data transmission route to transmit the monitoring data to a master station or a display end of the converter station of the control center.

The application example standardizes and unifies different clock monitoring schemes: and the modularized unified board card design is adopted, so that the clock synchronization generalization and standardization and the reasonable configuration of interface resources are realized. And an interface diversification design is adopted, the running state of the system is output, and a plurality of modes are accessed into the whole network synchronous clock monitoring system. And the maintenance convenience is designed, all modules support hot plug and automatic detection, so that the system is convenient to maintain online, and the clock device is ensured to work continuously and reliably.

Wherein, the functional design of show end: and the functions of time precision, running state and the like of each remote clock system are collected, counted and analyzed, real-time online monitoring, alarming and the like are carried out, and clock sources are switched according to requirements.

The main idea of the application example is as follows: in order to ensure the time accuracy of a main clock, a slave clock and time-service secondary equipment of a converter station in an electric power system, the time synchronization monitoring of the clock equipment of the converter station and the time-service equipment is carried out, self-checking information of a time deviation monitoring signal and a clock device is sent to a clock monitoring display end in real time, and a closed-loop mechanism for converting the clock from an open-loop management mechanism to a time-service and time state management is realized.

The technical scheme provided by the application example realizes accurate monitoring of the time synchronization condition of the monitored equipment in the converter station, obtains a corresponding monitoring result according to the time synchronization deviation value and the self-checking information, ensures the time synchronization accuracy of the equipment in the converter station, improves the performance and reliability of the system, and improves the efficiency and accuracy of the time synchronization monitoring.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a converter station time synchronization monitoring device for realizing the above-mentioned related converter station time synchronization monitoring method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the present application for one or more embodiments of the device for monitoring time synchronization of a converter station may be referred to the limitation of the method for monitoring time synchronization of a converter station in the foregoing, which is not repeated herein.

In an exemplary embodiment, as shown in fig. 9, a converter station time synchronization monitoring apparatus is provided, and the apparatus 900 may include:

the device monitoring module 901 is configured to monitor the time deviation of the monitored device in the converter station by using multiple time deviation monitoring modes, so as to obtain a time deviation value of the monitored device; the time deviation value of the monitored equipment is used for representing the time difference value between the monitored equipment and the main clock equipment in the converter station;

the deviation recognition module 902 is configured to recognize a time synchronization deviation value of the monitored device by using a preset time synchronization deviation threshold condition, so as to obtain a first time synchronization monitoring result of the monitored device;

The first determining module 903 is configured to determine a second time synchronization monitoring result of the monitored device according to self-checking information of the monitored device;

the second determining module 904 is configured to determine a time synchronization monitoring result of the monitored device according to the first time synchronization monitoring result and the second time synchronization monitoring result.

In one exemplary embodiment, the plurality of time-to-time bias monitoring modes includes a first time-to-time bias monitoring mode and a second time-to-time bias monitoring mode; the monitored equipment comprises slave clock equipment and time service equipment of different levels in the converter station; the device monitoring module 901 is further configured to monitor, by using a first time synchronization deviation monitoring manner, a time synchronization deviation of the slave clock device, so as to obtain a time synchronization deviation value of the slave clock device; and performing time setting deviation monitoring on the time-supplied devices of different levels through a first time setting deviation monitoring mode and a second time setting deviation monitoring mode to obtain time setting deviation values of the time-supplied devices of different levels.

In an exemplary embodiment, the device monitoring module 901 is further configured to determine a time synchronization deviation monitoring manner corresponding to the time service devices of different levels; and aiming at each time-given device, according to the hierarchy of the time-given device, performing time-versus-time deviation monitoring on the time-given device by a first time-versus-time deviation monitoring mode or a second time-versus-time deviation monitoring mode to obtain the time-versus-time deviation value of the time-given device.

In an exemplary embodiment, the device monitoring module 901 is further configured to determine, according to a hierarchy to which the device to be time-stamped belongs, a time-tick deviation monitoring mode corresponding to the device to be time-stamped; when the corresponding time deviation monitoring mode is the first time deviation monitoring mode, controlling the master clock equipment to perform communication interaction with the time-service equipment to obtain a corresponding communication interaction time stamp; and determining the time setting deviation value of the time-given equipment according to the communication interaction time stamp.

In an exemplary embodiment, the apparatus 900 further comprises: the signal acquisition module is used for acquiring a standard code stream signal and a code stream signal generated by time service equipment under the condition that the corresponding time synchronization deviation monitoring mode is a second time synchronization deviation monitoring mode; and determining the time setting deviation value of the time-given equipment according to the standard code stream signal and the code stream signal generated by the time-given equipment.

In an exemplary embodiment, the apparatus 900 further comprises: the information generation module is used for generating corresponding alarm information according to the time synchronization monitoring result under the condition that the time synchronization monitoring result shows abnormality; and uploading the alarm information to a monitoring system of the converter station.

The modules in the converter station time synchronization monitoring device can be realized in whole or in part by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In an exemplary embodiment, a computer device, which may be a terminal, is provided, and an internal structure thereof may be as shown in fig. 10. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of converter station time synchronization monitoring. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in FIG. 10 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In an exemplary embodiment, a computer device is also provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the method embodiments described above when the computer program is executed.

In one exemplary embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method embodiments described above.

In an exemplary embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A method for synchronous monitoring of converter station time, the method comprising:

2. The method of claim 1, wherein the plurality of time bias monitoring modes includes a first time bias monitoring mode and a second time bias monitoring mode; the monitored equipment comprises slave clock equipment and time service equipment of different levels in the converter station;

3. The method according to claim 2, wherein the performing, by the first time bias monitoring method and the second time bias monitoring method, time bias monitoring on the time-stamped devices of the different levels to obtain time bias values of the time-stamped devices of the different levels includes:

4. The method according to claim 3, wherein the performing, according to the hierarchy to which the device under time service belongs, the time bias monitoring on the device under time service by using the first time bias monitoring mode or the second time bias monitoring mode to obtain a time bias value of the device under time service includes:

5. The method of claim 4, further comprising, after determining a time synchronization bias monitoring mode corresponding to the device under timing according to a hierarchy to which the device under timing belongs:

6. The method of claim 1, further comprising, after determining the time synchronization monitoring result of the monitored device based on the first time synchronization monitoring result and the second time synchronization monitoring result:

7. A converter station time synchronization monitoring device, the device comprising:

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.

9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.