CN113992294A - Clock management control method and device in electricity consumption information acquisition system - Google Patents
Clock management control method and device in electricity consumption information acquisition system Download PDFInfo
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- CN113992294A CN113992294A CN202111235982.9A CN202111235982A CN113992294A CN 113992294 A CN113992294 A CN 113992294A CN 202111235982 A CN202111235982 A CN 202111235982A CN 113992294 A CN113992294 A CN 113992294A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0644—External master-clock
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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Abstract
The invention discloses a clock management control method and a device in a power utilization information acquisition system, wherein the method comprises the following steps: the master station acquires a time signal of a standard clock source in real time to perform clock synchronization; the master station periodically performs patrol detection on the terminal clock, searches out the terminal with clock out-of-tolerance or clock abnormality by acquiring the clock state of the terminal and comparing the clock state with the clock state, reports the terminal with clock out-of-tolerance or clock abnormality to the master station, and times the terminal with clock out-of-tolerance or clock abnormality by the master station; the terminal periodically performs patrol detection on the connected electric energy meters, finds out the electric energy meters with out-of-clock or abnormal clock and reports the electric energy meters to the master station, the master station performs time synchronization on the electric energy meters with out-of-clock or abnormal clock, and the terminal periodically performs broadcast time calibration on the connected electric energy meters. The method has the advantages of simple realization, high synchronization efficiency, accurate clock synchronization and the like, and can realize the accurate management of the whole clock synchronization of the power utilization information acquisition system.
Description
Technical Field
The invention relates to the technical field of power consumption information acquisition systems, in particular to a clock management control method and device in a power consumption information acquisition system.
Background
A large number of metering and collecting equipment terminals, electric energy meters and the like are arranged in a low-voltage distribution network area, different data communication modes can be adopted between the main station and the terminals and between the terminals and the electric energy meters according to different application scenes, if the main station and the terminals carry out data communication by using a wireless public network, and the terminals and the electric energy meters carry out data communication by using RS485 or low-voltage power line carrier/micropower wireless. In order to ensure the accuracy of the metering data, the consistent effectiveness of various event recording events, the acquisition quality and the like, the data among the master station, the terminal and the electric energy meter needs to be kept synchronous.
The terminal and the electric energy meter can generate clock out-of-tolerance or clock abnormity in the running process, the clock out-of-tolerance or clock abnormity is that the deviation of the clock out-of-tolerance or clock abnormity exceeds a threshold value with the standard clock, and for example, in the long-term running process of the electric energy meter, the clock is stopped after power failure due to insufficient battery capacity or power grid power failure, and the clock out-of-tolerance or clock abnormity can be caused. The clock precision of the electric energy meter can directly influence the accurate measurement of time-interval electric quantity, the accurate collection of daily frozen electric quantity, the time accuracy of various event records, the effectiveness of remote fee control and the like, thereby restricting the collection quality. The corresponding terminal may have an out-of-tolerance clock or an abnormal clock in the long-term operation process, so that time deviation of a certain degree may exist between the master station and the terminal and between the terminal and the electric energy meter.
In the prior art, clock management of a power consumption information acquisition system is performed by aiming at clock synchronization of an electric energy meter independently, for clock monitoring of the electric energy meter, a master station generally completes clock calling of all running electric energy meters at certain time intervals, if a terminal is powered off, the calling of clocks of the electric energy meter is performed once the day again, abnormal events are formed on the clock out-of-tolerance or clock abnormal electric energy meters with large clock deviation, the clock out-of-tolerance or clock abnormal electric energy meters are collectively brought into an abnormal management flow of a metering device for time comparison, the clock out-of-tolerance or clock abnormal electric energy meters are generally manually performed time comparison operation, such as manual point-to-point broadcast time comparison or manual broadcast address broadcast time comparison, but the manual time comparison operation wastes time and labor, the intelligentization degree is low, particularly, the number of the electric energy meters related to the clock out-of-tolerance or clock abnormal and abnormal is large, the workload required by manual correction is very large, and the manual correction is easy to generate errors, so that the clock control precision and the real-time performance are poor.
At present, the requirement on the accuracy of the integral clock of the power consumption information acquisition system is higher and higher, the clock of the electric energy meter is required to be consistent with the master station, and meanwhile, the clock accuracy among the master station, the terminal and the electric energy meter is required to be kept. Although the timing synchronization of the master station to the electric energy meter can ensure that the clock of the electric energy meter is consistent with the master station to some extent, the following problems still exist:
1. the clock management of the electric energy meter can be realized only, the terminal can also have the problem of clock out-of-tolerance or clock abnormity, and the master station can also have the problem of inaccurate clock.
2. Topological structure is complicated in the platform district, and electric energy meter is numerous, and direct calling to survey to time by main website to all electric energy meters, need carry out the time measurement to large batch electric energy meter simultaneously and handle, and the data handling capacity of main website is huge and lead to handling the time delay, causes just can't accomplish the accurate time measurement of all big electric energy meters in batches simultaneously, and the synchronous precision of clock and efficiency are not high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the clock management control method and the clock management control device in the electric information acquisition system, which are simple to realize, high in synchronization efficiency and accurate in clock synchronization, and can realize the whole clock synchronization accurate management of the electric information acquisition system.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a clock management control method in a power utilization information acquisition system comprises the following steps:
master station clock management: the master station acquires a time signal of a standard clock source in real time to perform clock synchronization;
terminal clock management: the master station periodically performs patrol detection on the terminal clock, searches out the terminal with clock out-of-tolerance or clock abnormality by acquiring the clock state of the terminal and comparing the clock state with the clock state, reports the terminal with clock out-of-tolerance or clock abnormality to the master station, and times the terminal with clock out-of-tolerance or clock abnormality by the master station;
managing the electric energy meter clock: the terminal periodically performs patrol detection on the connected electric energy meters, finds out the electric energy meters with out-of-clock or abnormal clock and reports the electric energy meters to the master station, the master station performs time synchronization on the electric energy meters with out-of-clock or abnormal clock, and the terminal periodically performs broadcast time calibration on the connected electric energy meters.
Further, in the terminal clock management, the timing, by the master station, of the terminal with an out-of-clock or an abnormal clock includes:
and judging whether the terminal to be timed is a protocol object-oriented terminal, if so, the master station issues timing parameters to perform point-to-point accurate timing on the terminal, otherwise, the master station issues timing commands to perform automatic timing on the terminal.
Further, the terminal clock management further includes:
the method comprises the steps that a terminal reports a heartbeat frame to a main station according to a preset frequency, wherein the heartbeat frame carries information of the terminal;
the master station analyzes the heartbeat frame sent by the terminal after receiving the heartbeat frame, and obtains the information of the terminal;
and judging whether the clock of the corresponding terminal is out of tolerance or not according to the acquired information of the terminal, and if so, timing the corresponding terminal through the master station.
Further, in the clock management of the electric energy meter, the terminal periodically polling the connected electric energy meter includes:
the terminal periodically patrols the clock and the state running word of the electric energy meter and judges the clock out-of-tolerance or clock abnormal state of the electric energy meter;
if the clock of the electric energy meter is out of tolerance or abnormal, judging the type of the electric energy meter, and if the electric energy meter is an object-oriented electric energy meter, performing segmented broadcast time synchronization on the electric energy meter by the master station; if the electric energy meter is a non-object-oriented electric energy meter, the master station carries out remote point-to-point time synchronization on the electric energy meter.
Further, before judging the clock out-of-tolerance or clock abnormal state of the electric energy meter, the method further comprises: judging whether a clock battery in the electric energy meter is under-voltage or not, and if so, sending corresponding alarm information to prompt the replacement of the battery; otherwise, the step of judging the clock out-of-tolerance or clock abnormal state of the electric energy meter is carried out.
Further, the method also comprises a power failure and restoration clock management step, which comprises the following steps:
monitoring whether a power failure and restoration event occurs to the terminal and/or the electric energy meter in real time, and reporting the power failure and restoration event to a master station when the power failure and restoration event occurs to the terminal and/or the electric energy meter is monitored, wherein the power failure and restoration event comprises information of the power failure and restoration terminal and/or the electric energy meter;
the master station analyzes the power failure and restoration event after receiving the power failure and restoration event, and acquires information of the terminal and/or the electric energy meter of the power failure and restoration event;
and the master station judges whether the clock of the corresponding terminal and/or the electric energy meter is out of tolerance or not according to the acquired information of the terminal and/or the electric energy meter with the power failure and recovery event, and if so, the master station times the corresponding terminal and/or the electric energy meter.
Further, the main station periodically performs patrol test on the terminal clock and/or the terminal periodically performs patrol test on the connected electric energy meter, and the method further comprises the step of adaptively modifying a patrol test plan, which comprises the following steps: acquiring a historical patrol result in real time, determining the over-clock frequency or abnormal clock frequency of each pre-divided sub-region in the transformer area according to the historical patrol result, and determining the patrol frequency of each sub-region according to the over-clock frequency or abnormal clock frequency to realize the self-adaptive modification of the patrol plan.
Further, in the step of adaptively modifying the patrol plan, when a power failure and restoration event is monitored, the patrol frequency of the sub-area where the power failure and restoration event occurs is increased.
A clock management control device in a power utilization information acquisition system comprises:
the master station clock management module is used for acquiring a time signal of a standard clock source in real time by the master station to perform clock synchronization;
the terminal clock management module is used for the master station to periodically patrol and test the terminal clock, and by acquiring the clock state of the terminal for comparison, the terminal with out-of-clock or abnormal clock is found out and reported to the master station, and the master station times the terminal with out-of-clock or abnormal clock;
and the electric energy meter clock management module is used for periodically inspecting the connected electric energy meters by the terminal, finding out the electric energy meters with out-of-clock errors or abnormal clocks and reporting the electric energy meters to the master station, carrying out time synchronization on the electric energy meters with out-of-clock errors or abnormal clocks by the master station, and carrying out broadcast time calibration on the connected electric energy meters by the terminal period.
A computer apparatus comprising a processor and a memory, the memory for storing a computer program, the processor for executing the computer program to perform the method of any one of claims 1 to 8.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the clock source is synchronized by the master station acquiring the standard in real time, the terminal is subjected to patrol measurement by the master station cycle, the terminal with over-poor clock or abnormal clock is timed, the electric energy meter is subjected to patrol measurement by the terminal cycle, the terminal with over-poor clock or abnormal clock is timed, and meanwhile, the terminal is also subjected to broadcast timing to the electric energy meter periodically, so that accurate timing can be carried out to other electric energy meters without over-poor clock or abnormal clock, the accurate management of the whole clock of the electricity consumption information acquisition system from top to bottom can be realized, the clock deviation between the master station and the terminal, between the terminal and the electric energy meter and between the master station and the electric energy meter is reduced, and the current requirement on the whole clock accuracy of the system can be met.
2. In the terminal clock management, the invention further integrates three conditions of periodic polling of the master station, periodic heartbeat analysis clock transmission of the terminal and power failure reporting to time the terminal, thereby avoiding the influence of terminal abnormity, power failure and the like on the terminal clock and ensuring the accuracy and reliability of the terminal clock to the maximum extent.
3. The invention further adopts different timing modes according to the types of the electric energy meters in the electric energy meter clock management, if the electric energy meter is an object-oriented electric energy meter, the master station performs subsection broadcasting time synchronization on the electric energy meter, otherwise, remote point-to-point time synchronization is performed, the accurate time synchronization of the electric energy meters of different types can be matched, further, when a power failure and power restoration event occurs, an event is actively uploaded for time synchronization, and the accurate reliability of the electric energy meter clock can be ensured to the maximum extent.
4. The invention further adaptively adjusts the patrol frequency according to the frequency of the clock out-of-tolerance occurrence in the historical patrol result, so that the higher the frequency of the clock out-of-tolerance occurrence is, the higher the corresponding patrol frequency is, and the lower the frequency of the clock out-of-tolerance occurrence is, the lower the patrol frequency is.
Drawings
Fig. 1 is a schematic flow chart illustrating an implementation process of a clock management control method in the power consumption information acquisition system according to the embodiment.
FIG. 2 is a flow chart illustrating the implementation of master clock synchronization in an exemplary embodiment.
Fig. 3 is a schematic flowchart of the polling from the master station to the terminal in the specific application embodiment.
Fig. 4 is a schematic flowchart of a terminal performing timing by sending a heartbeat frame in a specific application embodiment.
Fig. 5 is a schematic flow chart of the time synchronization of the terminal when a power failure event occurs in a specific application embodiment.
Fig. 6 is a schematic flow chart of automatic time setting of the terminal in a specific application embodiment.
Fig. 7 is a schematic flowchart of implementing terminal clock management in a specific application embodiment.
Fig. 8 is a schematic diagram of a timing process of the terminal for the electric energy meter in a specific application embodiment.
Fig. 9 is a schematic diagram of a timing process of the master station for the electric energy meter in a specific application embodiment.
Fig. 10 is a schematic flow chart of the master station polling the electric energy meter in a specific application embodiment.
Detailed Description
The invention is further described below with reference to the drawings and specific preferred embodiments of the description, without thereby limiting the scope of protection of the invention.
As shown in fig. 1, the clock management control method in the power consumption information acquisition system of the embodiment includes the steps of:
step S01, master station clock management: the master station acquires a time signal of a standard clock source in real time to perform clock synchronization;
step S02, terminal clock management: the master station periodically performs patrol detection on the terminal clock, searches out the terminal with clock out-of-tolerance or clock abnormality by acquiring the clock state of the terminal and comparing the clock state with the clock state, reports the terminal with clock out-of-tolerance or clock abnormality to the master station, and times the terminal with clock out-of-tolerance or clock abnormality by the master station;
step S03, electric energy meter clock management: the terminal periodically performs patrol detection on the connected electric energy meters, finds out the electric energy meters with out-of-clock or abnormal clock and reports the electric energy meters to the master station, the master station performs time synchronization on the electric energy meters with out-of-clock or abnormal clock, and the terminal periodically performs broadcast time calibration on the connected electric energy meters.
In the embodiment, the clock source is used for clock synchronization by the master station which acquires the standard time in real time, the terminal is used for periodic patrol measurement by the master station, and is used for timing the terminal with over-error clock or abnormal clock, the electric energy meter is used for periodic patrol measurement by the terminal and is used for timing the terminal with over-error clock or abnormal clock, and meanwhile, the terminal is used for periodic broadcast timing of the electric energy meter, so that accurate timing can be performed on other electric energy meters without over-error clock or abnormal clock, the overall clock accurate management from top (master station) to bottom (terminal and electric energy meter) of the electric information acquisition system can be realized, the clock deviations between the master station and the terminal, between the terminal and the electric energy meter and between the master station and the electric energy meter are reduced as much as possible, and the current requirement on the overall clock accuracy of the system can be met.
The clock out-of-tolerance is that the clock deviation between the master station and the terminal exceeds a preset threshold, for example, the clock deviation between the master station and the terminal exceeds the preset threshold, or the clock deviation between the terminal and the electric energy meter exceeds the preset threshold. By timing the terminal with out-of-clock and the electric energy meter, clock synchronization between the master station and the terminal, between the master station and the electric energy meter and between the terminal and the electric energy meter can be ensured.
The above-mentioned judgment of whether the clock is abnormal can be calculated as follows:
the absolute value of (standard time-terminal calendar clock + terminal communication delay time of the master station/2 + electric energy meter clock deviation collected by the terminal) exceeds a preset threshold;
and (2) when the absolute value of (standard time-calendar clock of the electric energy meter + communication delay time of the master station to the meter/2) exceeds a preset threshold value, the terminal and the electric energy meter with the communication delay time of more than 60 seconds can be found out through the judgment of the clock abnormity.
The clock deviation between the main station and the terminal or between the terminal and the electric energy meter exceeding the threshold can be found out through the judgment of the clock out-of-tolerance
In the clock management of the master station in step S01, the master station monitors and synchronizes the clock of the master station by acquiring a time signal of a standard clock source, where the standard clock source may specifically be a GPS or a beidou satellite signal, and the like, so as to ensure the accuracy of the clock of the master station.
Because the master station needs to periodically time-clock the terminal and the electric energy meter in the system, the time accuracy of the master station itself can directly determine the overall time accuracy of the terminal, the electric energy meter and the like, and a single standard clock source still has the problem of clock error. In this embodiment, the two standard clock sources are further used, the clock deviations of the two standard clock sources are compared in real time, the monitoring frequency and the monitoring duration of the master station are determined according to the clock deviation degree of the standard clock sources, and corresponding warning information is generated according to different deviations, so that the precision and the reliability of the master station clock management can be further improved.
In a specific application embodiment, as shown in fig. 2, performing master clock management based on two standard clock sources includes:
1. if the time deviation of the two standard clock sources exceeds a first threshold (such as 100ms), the monitoring frequency and the monitoring duration of the master station are increased.
2. And if the time deviation of the two standard clock sources exceeds a second threshold (such as 1s), troubleshooting is carried out, and the standard clock source signals are recovered and received after troubleshooting.
When the time deviation of the two standard clocks exceeds a first threshold value, the monitoring frequency and the monitoring time of the master station are increased, and when the time deviation exceeds a second threshold value, troubleshooting is prompted to ensure the accurate reliability of the master station clock.
In the embodiment, the master station periodically surveys the terminals, and finds out the terminals with clock out-of-tolerance or clock abnormity for timing so as to avoid clock deviation between the master station and the terminals. As shown in fig. 3, the detailed process of the periodic polling of the master station to the terminal in this embodiment is as follows:
(1) the master station automatically executes the terminal clock patrol according to a preset patrol plan;
(2) the calling time clock terminal judges whether the calling test is successful or not, if the calling test is failed, the (3) is executed, and if the calling test is successful, the (4) is executed;
(3) judging whether the continuous failure exceeds the preset times, if not, executing (2), and if so, executing (7);
(4) judging whether the terminal clock is out of tolerance or not, if so, executing (5), and if not, executing (7);
(5) judging whether the terminal is added into the timing list or not, if not, executing (6), and if so, executing (7);
(6) adding the clock out-of-tolerance terminal into a timing list;
(7) and recording the terminal clock patrol result and updating a 'terminal clock freezing list'.
In this embodiment, the terminal clock management further includes:
s201, the terminal reports a heartbeat frame to a master station according to a preset frequency, wherein the heartbeat frame carries information of the terminal;
s202, after receiving the heartbeat frame sent by the terminal, the master station analyzes the heartbeat frame to obtain the information of the terminal;
and S203, judging whether the clock of the corresponding terminal is out of tolerance according to the acquired information of the terminal, and if so, timing the corresponding terminal through the master station.
The polling of the master station to the terminal is performed periodically, and the problem of terminal clock out-of-tolerance still exists in the gap of periodic execution. In this embodiment, a heartbeat frame is further reported to the master station through the terminal according to a preset frequency, the heartbeat frame carries information of the terminal, the master station analyzes the heartbeat frame when receiving the heartbeat frame sent by the terminal, and determines whether a clock of the terminal is out of tolerance after acquiring the information of the terminal.
In a specific application embodiment, as shown in fig. 4, a detailed flow of the terminal performing timing based on the heartbeat frame is as follows:
(1) the terminal reports the heartbeat frame, and the master station analyzes the heartbeat frame to acquire terminal information;
(2) judging whether the terminal exceeds the maximum monitoring times or not, if not, executing (3), and if so, executing (6);
(3) judging whether the terminal clock is out of tolerance or not, if so, executing the step (4), and if so, finishing;
(4) judging whether the terminal is added into the timing list or not, if not, executing the step (5), and if so, ending the process;
(5) adding the clock out-of-tolerance terminal into a timing list;
(6) and recording a terminal heartbeat clock monitoring result and updating a 'terminal clock freezing list'.
In this embodiment, the terminal clock management further includes a power-off and power-restoration clock management step, including:
s211, monitoring whether a power failure and restoration event occurs in the terminal in real time, reporting the power failure and restoration event to a main station when the power failure and restoration event occurs in the terminal, wherein the power failure and restoration event comprises information of the terminal which has the power failure and restoration;
s212, the master station analyzes the power failure and restoration event after receiving the power failure and restoration event to acquire information of a terminal with the power failure and restoration event;
and S213, the master station judges whether the clock of the corresponding terminal is out of tolerance according to the acquired terminal with the power failure and restoration event, and if so, the master station carries out point-to-point time synchronization on the corresponding terminal.
If a power failure event occurs, the clock out-of-tolerance phenomenon is easy to occur after the power is restored. In this embodiment, the power failure and restoration events of the terminal are further monitored in real time, and once the power failure and restoration events are monitored, the report to the master station is controlled, and the master station performs point-to-point time synchronization on the terminal with the power failure and restoration events, so as to avoid the influence of the power failure and restoration events on the clock. The power failure event monitoring method comprises the steps that monitoring whether a power failure occurs in a terminal or not can be achieved through monitoring whether the power failure occurs in the terminal, if the terminal voltage is monitored to be lower than a preset threshold value, the power failure event is judged to occur, the power failure event is reported to a main station, and the time synchronization is carried out on the power failure terminal through the main station after the power failure occurs in the terminal.
Because the clock of the terminal is easy to be in an unstable state after the power failure and restoration event occurs, important monitoring is needed, and in the embodiment, when the power failure and restoration event occurs in the terminal, the master station is further controlled to increase the polling frequency of the terminal and shorten the polling period so as to ensure that the clock of the terminal is stable within a certain time after the power failure and restoration occurs.
As shown in fig. 5, in a specific application embodiment, the detailed time setting process when the terminal generates the power outage event includes:
(1) the terminal reports the power restoration event, and the master station analyzes the power restoration event to acquire terminal information;
(2) calling a terminal clock, judging whether calling is successful or not, if calling is failed, executing (3), and if calling is successful, executing (4);
(3) judging whether the continuous failure exceeds the preset times, if not, executing (2), and if so, executing (6);
(4) judging whether the terminal clock is out of tolerance or not, if so, executing (5), and if not, executing (6);
(5) adding the clock out-of-tolerance terminal into a timing list;
(6) and recording the monitoring result of the power restoration clock of the terminal and updating a 'terminal clock freezing list'.
As shown in fig. 6, the clock management of the terminal of this embodiment specifically includes three parts: the first part is to periodically survey the clock by the master station to judge whether the terminal clock is out of tolerance, and the second part is to periodically send a heartbeat analysis clock by the terminal and actively report clock information to judge whether the terminal clock is out of tolerance; the third part is that when the terminal stops power supply and reports, after the power supply stop event is reported, the master station calls and tests the terminal clock immediately after power supply is recovered to judge whether the terminal is out of tolerance, and under the three conditions, when the terminal clock is judged to be out of tolerance, the terminal clock is added into the timing list, so that the timing list needing to be timed is generated. And the master station further judges the type of the terminal when the terminal is checked according to the timing list, if the terminal is an object-oriented protocol terminal, point-to-point accurate timing is carried out, otherwise, automatic timing is carried out according to a timing command, and if the time is continuously checked for more than a plurality of times or more than two continuous times are failed, the field processing is judged. The terminal is timed under three conditions of periodic polling of the integrated master station, periodic heartbeat analysis clock sending of the terminal and power failure reporting, so that the influence of terminal abnormity, power failure and power failure on the terminal clock can be avoided, and the accurate reliability of the terminal clock is ensured to the maximum extent.
In the clock management of the terminal in this embodiment, the timing, by the master station, of the terminal with an out-of-clock or an abnormal clock includes:
and judging whether the terminal to be timed is a protocol object-oriented terminal, if so, the master station issues timing parameters to perform point-to-point accurate timing on the terminal, otherwise, the master station issues timing commands to perform automatic timing on the terminal. If the terminal is not the terminal facing the protocol object, the time can be directly and automatically corrected, and if the terminal is the terminal facing the protocol object, the point-to-point accurate time correction is controlled because the automatic time correction is not supported, so that the time correction requirements of different types of terminals can be met.
As shown in fig. 7, the detailed steps of the terminal automatic time setting in this embodiment are as follows:
(1) the master station inquires a timing list to obtain terminal information;
(2) judging whether an object-oriented protocol terminal exists, if the object-oriented protocol terminal exists, executing (3), and if the object-oriented protocol terminal exists, executing (4);
(3) issuing an accurate timing parameter command, starting the terminal accurate timing, and executing (5);
(4) issuing a time setting command to realize the automatic time setting of the terminal and executing (5);
(5) judging whether the time correction is successful or not, if the time correction is successful, executing (7), and if the time correction is failed, accumulating the failure times and executing (6);
(6) judging whether the time correction fails continuously exceeding the preset times, if not, executing (8), and if so, executing (2);
(7) judging whether the number of days continuously exceeds a preset number and needs to be calibrated, if so, executing (8), and otherwise, executing (9);
(8) generating a terminal clock exception record to be processed on site;
(9) and recording a terminal clock timing result and finishing.
In the clock management of the electric energy meter of the embodiment, the patrol test of the terminal to the connected electric energy meter periodically comprises the following steps:
s301, periodically surveying a clock and a state running word of the electric energy meter by the terminal, and judging the clock out-of-tolerance or clock abnormal state of the electric energy meter;
s302, if the clock of the electric energy meter is judged to be out of tolerance or abnormal, judging the type of the electric energy meter, and if the electric energy meter is an object-oriented electric energy meter, performing segmented broadcast time synchronization on the electric energy meter by the master station; if the electric energy meter is a non-object-oriented electric energy meter, the master station carries out remote point-to-point time synchronization on the electric energy meter.
The segmented time synchronization is to perform clock step length in stages, each stage compensates part of the clock, and the time synchronization is completed after the deviation is gradually reduced after multiple times of compensation. In a specific application embodiment, a specific timing flow of the segment timing is as follows:
firstly, sending a broadcast timing command with the timing time of 'master station time +/-summoning communication time/2';
then, a broadcast timing command with the timing time of +/-1 (electric energy meter calling and measuring time/2 + segmented clock compensation) is sent at intervals of preset duration, wherein the segmented clock compensation can be set according to actual requirements, and +/-can be selected from +/-or (-) according to the comparison condition of the electric energy meter calling and measuring time and the master station time.
The segmented time pairing can be specifically configured to start the electric energy meter with the deviation value within a first preset threshold value (such as 30 minutes) for the first time, and then to transmit a broadcast time calibration command of 'master station time +/-recall communication time/2' to the electric energy meter with the clock deviation value less than a second preset threshold value (such as 5 minutes) during the current day recall.
The point-to-point time correction is to send the accurate time needing time correction to the terminal through a point-to-point time correction command, and the terminal executes the time correction after receiving the point-to-point time correction command. In a specific application embodiment, the point-to-point timing process is as follows: firstly, a point-to-point timing command with the timing time of 'master station time +/-recall communication time/2' is sent, and after the master station receives a confirmation command returned by the terminal, a clock of the electric energy meter is recalled. The embodiment can be particularly configured to perform point-to-point time synchronization when the recalled clock deviation value is smaller than the electric energy meter clock deviation threshold value.
If the protocol object-oriented electric energy meter such as the 09 version is subjected to a power outage and restoration event once, the battery is under-voltage and is not suitable for segmented broadcast time correction, in the time correction process of the electric energy meter by the master station, different time correction modes are adopted according to the type of the electric energy meter, and if the protocol object-oriented electric energy meter is adopted, the master station performs segmented broadcast time correction on the electric energy meter; if the electric energy meter is a non-object-oriented electric energy meter, the master station carries out remote point-to-point time synchronization on the electric energy meter so as to match the accurate time synchronization of different types of electric energy meters.
In this embodiment, before determining the clock out-of-tolerance or the clock abnormal state of the electric energy meter, the method further includes: judging whether a clock battery in the electric energy meter is under-voltage or not, and if so, sending corresponding alarm information to prompt the replacement of the battery; otherwise, the step of judging the clock out-of-tolerance or clock abnormal state of the electric energy meter is carried out to screen the undervoltage fault condition of the clock battery of the electric energy meter at the same time, and the judgment of the clock out-of-tolerance is further carried out under the condition that the battery is not undervoltage.
As shown in fig. 8, in a specific application embodiment, in the process of calibrating the electric energy meter by the terminal, the terminal periodically surveys the clock of the electric energy meter, and if the clock of the electric energy meter is out of tolerance, an event is generated and reported to the master station; meanwhile, the collection terminal periodically corrects the broadcast of the electric meter so as to perform broadcast timing on all electric energy meters without clock error, and if the object-oriented terminal needs the terminal to finish accurate timing, the terminal performs broadcast timing on the electric meter, otherwise, the terminal performs broadcast timing on the electric meter directly.
In a specific application embodiment, as shown in fig. 9, a detailed flow of the time synchronization of the master station to the electric energy meter is as follows:
(1) the master station automatically executes the digital patrol of the running state of the electric energy meter according to a preset patrol plan;
(2) calling the running state words of the electric energy meter, judging whether the calling is successful, if so, executing (4), and if not, accumulating the failure times and executing (3);
(3) judging whether the continuous failure exceeds the preset times, if so, executing (8), and otherwise, executing (2);
(4) judging whether the clock battery is under-voltage/out-of-tolerance or not, if the battery is not under-voltage/out-of-tolerance, executing (8), and if the battery is under-voltage/out-of-tolerance, executing (5);
(5) judging whether an electric energy meter clock battery under-voltage detailed table is added or not and/or an electric energy meter clock patrol detailed table is added, if the electric energy meter clock battery under-voltage detailed table is added and/or the electric energy meter clock patrol detailed table is added, executing (6) and (8), and if the electric energy meter clock battery under-voltage detailed table is not added, executing (7) and (8);
(6) updating the electric energy meter clock battery under-voltage detailed meter and the electric energy meter clock patrol detailed meter;
(8) and writing the polling result into an electric energy meter running state word polling list and an electric energy meter clock polling list, and ending.
In this embodiment, the clock management of the electric energy meter further includes a power failure and restoration clock management step, including:
s311, monitoring whether a power failure and restoration event occurs to the electric energy meter in real time, reporting the power failure and restoration event to a master station when the power failure and restoration event occurs to the electric energy meter, wherein the power failure and restoration event comprises information of the electric energy meter which has the power failure and restoration;
s312, the master station analyzes the power failure and restoration event after receiving the power failure and restoration event to acquire information of the electric energy meter with the power failure and restoration event;
and S313, the master station judges whether the clock of the corresponding electric energy meter is out of tolerance according to the acquired information of the electric energy meter with the power failure and restoration event, and if so, the master station times the corresponding electric energy meter.
According to the embodiment, the event is actively reported when the power failure and restoration event occurs to the electric energy meter, and the master station performs time synchronization, so that the influence of the power failure and restoration event on the clock of the electric energy meter can be avoided, and the clock precision of the electric energy meter is further ensured.
As shown in fig. 10, in the specific application embodiment, the detailed time setting process after the electric energy meter stops the power restoration time includes:
(1) the terminal reports the power-on event of the electric energy meter, and the master station analyzes the power-on event to acquire information of the electric energy meter;
(2) judging the version of the electric energy meter, if the electric energy meter is a non-protocol object-oriented electric energy meter (such as the 09 version), executing (3), and if the electric energy meter is a protocol object-oriented electric energy meter, executing (6);
(3) the electric energy meter carries out remote point-to-point timing;
(4) judging whether the point-to-point timing is successful, if so, executing (13), if not, accumulating failure times, recording failure reasons and executing (5);
(5) judging whether the time correction failure exceeds the preset times in the period, if so, executing (12), otherwise, executing (3);
(6) calling a clock of the electric energy meter;
(7) judging whether the clock calling is successful or not, and if the clock calling is successful, executing (9); if the summoning test fails, accumulating the failure times, recording the failure reason and executing (8);
(8) judging whether the time correction failure exceeds the preset times in the period, if so, executing (13), otherwise, executing (6);
(9) judging whether the clock deviation is larger than a preset threshold value (such as 30min), if so, executing (12), otherwise, executing (10);
(10) time correction is carried out by segmented broadcasting;
(11) judging whether the subsection broadcasting time correction is successful or not, if so, executing (13), and if not, executing (12);
(12) writing in an 'electric energy meter clock abnormity meter to be processed on site';
(13) and writing the time correction result into the electric energy meter time correction list and finishing.
In this embodiment, when the master station periodically performs patrol survey on the terminal clock and/or the terminal periodically performs patrol survey on the connected electric energy meter, the method further includes a step of adaptively modifying a patrol survey plan, including: and acquiring a historical patrol result in real time, determining the over clock difference or abnormal clock frequency of each sub-region pre-divided in the transformer area according to the historical patrol result, and determining the patrol frequency of each sub-region according to the over clock difference or abnormal clock frequency so as to realize the self-adaptive modification of the patrol plan. Once the clock of the terminal or the electric energy meter is out of tolerance, the probability of the clock out of tolerance occurring again is high, so that the clock out of tolerance of the terminal or the electric energy meter which is out of tolerance occurs frequently within a certain time period, so that important attention needs to be paid, and the probability of the clock out of tolerance sudden change of the terminal or the electric energy meter which is in a normal state for a long time is low. In the embodiment, the above problem is considered, and the patrol frequency is adaptively adjusted according to the frequency of the clock out-of-tolerance occurrence in the historical patrol result, so that the higher the frequency of the clock out-of-tolerance occurrence is, the higher the patrol frequency is correspondingly increased by increasing the patrol frequency, and the lower the patrol frequency is correspondingly decreased by increasing the patrol frequency, the lower the patrol frequency is decreased by decreasing the patrol frequency, compared with the fixed patrol mode, the patrol frequency can be adaptively adjusted by fully utilizing the historical patrol result in the adaptive patrol mode, so that the clock precision can be effectively ensured, and unnecessary patrol can be reduced as much as possible.
The division of the sub-regions can divide the terminals or the electric energy meters in a certain range into one sub-region according to actual requirements, or can directly use a single terminal or electric energy meter as a node, and by acquiring the terminals or the electric energy meters with historical clock overproof or clock abnormity in the transformer area, when the number of times of the clock overproof of the terminal or the electric energy meter exceeds a preset threshold value within a preset time length, the patrol period is controlled to be increased, otherwise, the patrol period is reduced, so that the terminals or the electric energy meters can be detected according to different patrol periods.
In this embodiment, in the step of adaptively modifying the patrol plan, when the occurrence of the power failure and restoration event is monitored, the patrol frequency of the sub-area where the power failure and restoration event occurs is increased. The clock may be unstable for a certain time after the power failure and recovery event occurs, and in this embodiment, when the patrol plan is adaptively modified and when the power failure and recovery event is monitored, the patrol frequency of the sub-region where the power failure and recovery event occurs is correspondingly increased, so that the influence of the power failure and recovery event on the clock can be reduced as much as possible, and the accurate reliability of the clock is ensured.
Clock management controlling means in this embodiment power consumption information acquisition system includes:
the master station clock management module is used for acquiring a time signal of a standard clock source in real time by the master station to perform clock synchronization;
the terminal clock management module is used for the master station to periodically patrol and test the terminal clock, and by acquiring the clock state of the terminal for comparison, the terminal with out-of-clock or abnormal clock is found out and reported to the master station, and the master station times the terminal with out-of-clock or abnormal clock;
and the electric energy meter clock management module is used for periodically inspecting the connected electric energy meters by the terminal, finding out the electric energy meters with over-error clocks or abnormal clocks and reporting the electric energy meters to the master station, carrying out time synchronization on the electric energy meters with over-error clocks or abnormal clocks by the master station, and periodically broadcasting and timing the connected electric energy meters by the terminal so as to carry out time synchronization on the other electric energy meters without over-error clocks or abnormal clocks.
In this embodiment, the clock management control device in the power consumption information acquisition system corresponds to the clock management control method in the power consumption information acquisition system one to one, and is not described herein again.
The embodiment further provides a computer apparatus, comprising a processor and a memory, wherein the memory is used for storing a computer program, and the processor is used for executing the computer program, and is characterized in that the processor is used for executing the computer program to execute the method.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. A clock management control method in a power utilization information acquisition system is characterized by comprising the following steps:
master station clock management: the master station acquires a time signal of a standard clock source in real time to perform clock synchronization;
terminal clock management: the master station periodically performs patrol detection on the terminal clock, searches out the terminal with clock out-of-tolerance or clock abnormality by acquiring the clock state of the terminal and comparing the clock state with the clock state, reports the terminal with clock out-of-tolerance or clock abnormality to the master station, and times the terminal with clock out-of-tolerance or clock abnormality by the master station;
managing the electric energy meter clock: the terminal periodically performs patrol detection on the connected electric energy meters, finds out the electric energy meters with out-of-clock or abnormal clock and reports the electric energy meters to the master station, the master station performs time synchronization on the electric energy meters with out-of-clock or abnormal clock, and the terminal periodically performs broadcast time calibration on the connected electric energy meters.
2. The clock management control method in the power consumption information acquisition system according to claim 1, wherein in the terminal clock management, the timing of the terminal with an out-of-clock or an abnormal clock by the master station comprises:
and judging whether the terminal to be timed is a protocol object-oriented terminal, if so, the master station issues timing parameters to perform point-to-point accurate timing on the terminal, otherwise, the master station issues timing commands to perform automatic timing on the terminal.
3. The clock management control method in the electricity consumption information collection system according to claim 1, wherein the terminal clock management further comprises:
the method comprises the steps that a terminal reports a heartbeat frame to a main station according to a preset frequency, wherein the heartbeat frame carries information of the terminal;
the master station analyzes the heartbeat frame sent by the terminal after receiving the heartbeat frame, and obtains the information of the terminal;
and judging whether the clock of the corresponding terminal is out of tolerance or not according to the acquired information of the terminal, and if so, timing the corresponding terminal through the master station.
4. The clock management control method in the electricity information collection system according to claim 1, wherein in the electric energy meter clock management, the terminal periodically performing patrol on the connected electric energy meter includes:
the terminal periodically patrols the clock and the state running word of the electric energy meter and judges the clock out-of-tolerance or clock abnormal state of the electric energy meter;
if the clock of the electric energy meter is out of tolerance or abnormal, judging the type of the electric energy meter, and if the electric energy meter is an object-oriented electric energy meter, performing segmented broadcast time synchronization on the electric energy meter by the master station; if the electric energy meter is a non-object-oriented electric energy meter, the master station carries out remote point-to-point time synchronization on the electric energy meter.
5. The clock management control method in the electricity consumption information acquisition system according to claim 4, wherein before the determining of the clock out-of-tolerance or clock abnormal state of the electric energy meter, the method further comprises: judging whether a clock battery in the electric energy meter is under-voltage or not, and if so, sending corresponding alarm information to prompt the replacement of the battery; otherwise, the step of judging the clock out-of-tolerance or clock abnormal state of the electric energy meter is carried out.
6. The clock management control method in the electricity consumption information acquisition system according to any one of claims 1 to 5, further comprising a power failure and restoration clock management step including:
monitoring whether a power failure and restoration event occurs to the terminal and/or the electric energy meter in real time, and reporting the power failure and restoration event to a master station when the power failure and restoration event occurs to the terminal and/or the electric energy meter is monitored, wherein the power failure and restoration event comprises information of the power failure and restoration terminal and/or the electric energy meter;
the master station analyzes the power failure and restoration event after receiving the power failure and restoration event, and acquires information of the terminal and/or the electric energy meter of the power failure and restoration event;
and the master station judges whether the clock of the corresponding terminal and/or the electric energy meter is out of tolerance or not according to the acquired information of the terminal and/or the electric energy meter with the power failure and recovery event, and if so, the master station times the corresponding terminal and/or the electric energy meter.
7. The clock management control method in the electricity information collection system according to any one of claims 1 to 5, wherein the master station periodically performs patrol test on the terminal clock and/or the terminal periodically performs patrol test on the connected electric energy meter, and further comprises a step of adaptively modifying a patrol test plan, including: acquiring a historical patrol result in real time, determining the over-clock frequency or abnormal clock frequency of each pre-divided sub-region in the transformer area according to the historical patrol result, and determining the patrol frequency of each sub-region according to the over-clock frequency or abnormal clock frequency to realize the self-adaptive modification of the patrol plan.
8. The clock management control method in the power consumption information acquisition system according to claim 7, wherein in the step of adaptively modifying the patrol schedule, when a power failure and restoration event is monitored, the patrol frequency of the sub-area where the power failure and restoration event occurs is increased.
9. The utility model provides a clock management controlling means among power consumption information acquisition system which characterized in that includes:
the master station clock management module is used for acquiring a time signal of a standard clock source in real time by the master station to perform clock synchronization;
the terminal clock management module is used for the master station to periodically patrol and test the terminal clock, and by acquiring the clock state of the terminal for comparison, the terminal with out-of-clock or abnormal clock is found out and reported to the master station, and the master station times the terminal with out-of-clock or abnormal clock;
and the electric energy meter clock management module is used for periodically inspecting the connected electric energy meters by the terminal, finding out the electric energy meters with out-of-clock errors or abnormal clocks and reporting the electric energy meters to the master station, carrying out time synchronization on the electric energy meters with out-of-clock errors or abnormal clocks by the master station, and carrying out broadcast time calibration on the connected electric energy meters by the terminal period.
10. A computer arrangement comprising a processor and a memory, the memory being adapted to store a computer program, the processor being adapted to execute the computer program, wherein the processor is adapted to execute the computer program to perform the method according to any of claims 1-8.
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