KR102493594B1 - Server, method and computer program for synchronizing time between measuring device and electricity meter - Google Patents

Abstract

A server that synchronizes the time between a measuring device for measuring a pulse signal for meter reading data of a power meter and the power meter receives metering data including the pulse signal and data generation time corresponding to the pulse signal from the measuring device A receiving unit, a calculating unit that calculates a time difference between the data generation time and the data reception time at which the metering data is received, classifies the calculated time difference into one of preset time synchronization intervals, and based on the classified interval and a determination unit for determining whether an abnormal event has occurred with respect to the power meter and a time synchronizing unit for synchronizing a time between the measuring device and the power meter based on whether the abnormal event has occurred.

Description

Server, method and computer program for synchronizing time between measuring device and power meter

The present invention relates to a server, method and computer program for synchronizing time between a measuring device and a power meter.

A power meter is a device that measures the amount of power consumed, and indicates the amount of power used by adding time to a value obtained by multiplying a supply voltage and a current. Conventionally, an induction type watt-hour meter has been used, but recently, in order to implement an intelligent power grid (smart grid), the spread of electronic watt-hour meters (smart meters) capable of metering by time zone and two-way communication is gradually expanding.

Advanced Metering Infrastructure (AMI) refers to a system that monitors real-time power usage in a central control room and remotely controls power usage. Electric power companies can acquire real-time metering information of all customers through intelligent metering infrastructure and efficiently adjust power demand based on the data.

Regarding such an intelligent meter reading infrastructure, Korea Patent Publication No. 2014-0106067, which is a prior art, discloses a power meter reading system.

In the intelligent metering infrastructure, a measuring device communicates with a power meter to acquire metering data and transmits it to a server using wireless communication such as LTE (Long Term Evolution), 3G, WiSUN, Zigbee, and Wi-Fi.

The server may perform remote meter reading by receiving metering data measured by each power meter through a measuring device. However, due to the time difference between the power meter and the server, system load due to dump transmission, terminal maintenance policy, and intermittent errors in the system, metering data is often omitted, making remote meter reading difficult. there was.

A time synchronization server, method, and computer program for receiving metering data including the data generation time and calculating a time difference between the data generation time and the data reception time at which the metering data is received to determine whether an abnormal event has occurred for the power meter want to provide

An object of the present invention is to provide a time synchronization server, method, and computer program for synchronizing time between a measuring device and a power meter when an abnormal event occurs in the power meter.

However, the technical problem to be achieved by the present embodiment is not limited to the technical problems described above, and other technical problems may exist.

As a means for achieving the above technical problem, an embodiment of the present invention is a receiving unit for receiving metering data including the pulse signal and data generation time corresponding to the pulse signal from a measuring device, the data generation time and A calculation unit that calculates a time difference between data reception times when the metering data is received, classifies the calculated time difference into one of preset time synchronization intervals, and generates an abnormal event for the power meter based on the classified interval It is possible to provide a server including a determination unit for determining whether the occurrence of the abnormal event and a time synchronization unit for synchronizing the time between the measuring device and the power meter based on whether the abnormal event has occurred.

In another embodiment of the present invention, receiving metering data including the pulse signal and data generation time corresponding to the pulse signal from a measuring device, a time difference between the data generation time and the data reception time at which the metering data is received calculating the time difference, classifying the calculated time difference into one of preset time synchronization intervals, determining whether or not an abnormal event has occurred for the power meter based on the classified interval, and the abnormal event It is possible to provide a time synchronization method comprising synchronizing the time between the measuring device and the power meter based on the occurrence of

Another embodiment of the present invention, when the computer program is executed by a computing device, receives metering data including the pulse signal and data generation time corresponding to the pulse signal from the measurement device, and the data generation time and the data generation time Calculate the time difference between data reception times when metering data is received, classify the calculated time difference into any one of preset time synchronization intervals, and determine whether or not an abnormal event has occurred for the power meter based on the classified interval. It is possible to provide a computer program stored in a medium including a sequence of instructions for determining and synchronizing the time between the measuring device and the power meter based on whether the abnormal event has occurred.

The above-described means for solving the problems is only illustrative and should not be construed as limiting the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and detailed description.

According to any one of the above-described problem solving means of the present invention, metering data including data generation time corresponding to the pulse signal is received from the measurement device, and a time difference between the data generation time and the data reception time at which the metering data is received is calculated. Accordingly, it is possible to provide a time synchronization server, method, and computer program for determining whether an abnormal event for a power meter has occurred.

The time difference calculated between the data generation time corresponding to the pulse signal and the data reception time at which the metering data is received is classified into one of a normal section, a correction section, and an abnormal section among preset time synchronization sections, and the power meter is measured based on the classified section. It is possible to provide a time synchronization server, method, and computer program for determining whether an abnormal event has occurred.

When the time difference is classified as a correction section among the time synchronization sections, the time synchronization section is reset by correcting the threshold time set in the correction section, so that metering data is transmitted based on individual time for each business site based on the reset time synchronization section. A time synchronization server, method and computer program can be provided.

A time synchronization server, method, and computer program that detects a defective power meter based on the analyzed status of metering data received for a predetermined period and whether an abnormal event has occurred, and inspects or replaces the detected defective power meter. can provide

It is possible to provide a time synchronization server, method, and computer program that can improve service quality by responding in advance to damage factors that may occur in water supply fees and incentives due to time differences.

1 is a configuration diagram of a time synchronization system according to an embodiment of the present invention.
2 is a configuration diagram of a time synchronization server according to an embodiment of the present invention.
3 is an exemplary diagram for explaining a process of calculating a time difference between data generation time and data reception time according to an embodiment of the present invention.
4 is an exemplary diagram illustrating a time synchronization section according to an embodiment of the present invention.
5 is an exemplary diagram for explaining a process of determining whether an abnormal event has occurred in a power meter according to an embodiment of the present invention.
6 is an exemplary diagram for explaining a process of detecting whether a power meter has a defect based on an analysis status analyzed for metering data for a predetermined period and whether an abnormal event has occurred, according to an embodiment of the present invention.
7 is a flowchart of a method of synchronizing time between a power meter and a measurement device that measures a pulse signal for meter reading data of a power meter in a time synchronization server according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected" but also the case where it is "electrically connected" with another element interposed therebetween. . In addition, when a part "includes" a certain component, this means that it may further include other components, not excluding other components, unless otherwise stated, and one or more other characteristics. However, it should be understood that it does not preclude the possibility of existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In this specification, a "unit" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. Further, one unit may be realized using two or more hardware, and two or more units may be realized by one hardware.

In this specification, some of the operations or functions described as being performed by a terminal or device may be performed instead by a server connected to the terminal or device. Likewise, some of the operations or functions described as being performed by the server may also be performed in a terminal or device connected to the corresponding server.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a time synchronization system according to an embodiment of the present invention. Referring to FIG. 1 , the time synchronization system 1 may include a measurement device 110 installed for each power meter 100, a time synchronization server 120, and a manager terminal 130. The power meter 100 , the measuring device 110 , the time synchronization server 120 and the manager terminal 130 are examples of components that can be controlled by the time synchronization system 1 .

Each component of the time synchronization system 1 of FIG. 1 is generally connected through a network. For example, as shown in FIG. 1 , the time synchronization server 120 may be simultaneously connected to the measurement device 110 or the manager terminal 130 at a time interval.

A network refers to a connection structure capable of exchanging information between nodes such as terminals and servers, such as a local area network (LAN), a wide area network (WAN), and the Internet (WWW: World Wide Web), wired and wireless data communication network, telephone network, and wired and wireless television communication network. Examples of wireless data communication networks include 3G, 4G, 5G, 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), World Interoperability for Microwave Access (WIMAX), Wi-Fi, Bluetooth communication, infrared communication, ultrasonic communication, visible light communication (VLC: Visible Light Communication), LiFi, and the like, but are not limited thereto.

The power meter 100 is installed at a home or industrial consumer side, and can perform meter reading for electricity, gas, water supply, temperature, heat amount, etc. used in the consumer. The power meter 100 may be operated by a first platform of a power company.

The measuring device 110 measures a pulse signal for meter reading data from the electronic power meter 100 and transmits the metering data including the measured pulse signal and the data generation time corresponding to the pulse signal to the time synchronization server 120. can The measuring device 110 may be operated by a second platform by an operator different from the electric power company.

Here, it is expected that the time of the power meter 100 and the measuring device 110 is synchronized so that the time relationship on the time domain is identical.

To this end, the measurement device 110 transmits the data generation time corresponding to the pulse signal generated based on the synchronized time to the time synchronization server 120, so that whether or not the time of the power meter 100 is out of sync is determined by the time synchronization server 120. ) is judged by

The time synchronization server 120 may receive metering data including a pulse signal and data generation time corresponding to the pulse signal from the measurement device 110 .

The time synchronization server 120 may calculate a time difference between data generation time and data reception time at which metering data is received. The time synchronization server 120 may classify the calculated time difference into one of preset time synchronization intervals, and determine whether an abnormal event occurs in the power meter 100 based on the classified interval. Here, the preset time synchronization section may include a normal section, a correction section, and an abnormal section.

The time synchronization server 120 may synchronize the times of the measuring device 110 and the power meter 100 based on whether an abnormal event has occurred. For example, when the time difference corresponds to the correction section, the time synchronization server 120 may correct the threshold time set in the correction section and reset the preset time synchronization section based on the corrected threshold time. Here, the correction section may include at least one detailed correction section. The time synchronization server 120 may perform correction for the threshold time differently based on the detailed correction section corresponding to the time difference.

The time synchronization server 120 may calculate a time difference between a data reception time and a data generation time of the metering data received after the time synchronization period is reset. For example, the time synchronization server 120 may classify the time synchronization interval into one of the reset time synchronization intervals based on the calculated time difference.

The time synchronization server 120 may transmit a time error event message for the power meter 100 to the manager terminal 130 when the time difference corresponds to the abnormal section.

The time synchronization server 120 may detect whether or not the power meter 100 has a defect based on the analyzed status of the metering data received for a predetermined period and whether an abnormal event has occurred.

The manager terminal 130 may receive a time error event message for the power meter 100 from the time synchronization server 120 . Based on the received time error event message, the manager terminal 130 may allow the manager to inspect or replace the corresponding power meter 100 .

The time synchronization server 120 is a computer program stored in a medium including a sequence of instructions for synchronizing the time between the power meter 100 and the measurement device 110 that measures the pulse signal for the meter reading data of the power meter 100. can be executed by

When the computer program is executed by the computing device, the metering data including the pulse signal and the data generation time corresponding to the pulse signal is received from the measurement device 110, and the time difference between the data generation time and the data reception time at which the metering data is received is received. Calculate , classify the calculated time difference into any one of the preset time synchronization intervals, determine whether or not an abnormal event has occurred for the power meter based on the classified interval, and measure based on whether or not an abnormal event has occurred. It may include a sequence of instructions to synchronize the time between the device and the power meter.

2 is a configuration diagram of a time synchronization server according to an embodiment of the present invention. Referring to FIG. 2 , the time synchronization server 120 includes a reception unit 210, a calculation unit 220, a determination unit 230, a time synchronization unit 240, a message transmission unit 250, and a defect detection unit 260. can include

The receiving unit 210 may receive metering data including a pulse signal and data generation time corresponding to the pulse signal from the measurement device 110 . For example, the receiving unit 210 may receive metering data from the measuring device 110 at predetermined intervals (eg, 5 minutes). Here, the data generation time is generated by the power meter 100 chronologically synchronized with the measurement device 110 in advance, and may be the time of the power meter 100 when the corresponding data is generated.

The power meter 100 and the measurement device 110 may be synchronized in advance, and it is required that their time synchronization be maintained.

However, when a data generation time shift occurs due to a quality degradation of the power meter 100, the time between the time synchronized measurement device 110 and the time synchronization server 120 is shifted due to this.

The calculation unit 220 may calculate a time difference between data generation time and data reception time at which metering data is received. A process of calculating the time difference between data generation time and data reception time will be described in detail with reference to FIG. 3 .

3 is an exemplary diagram for explaining a process of calculating a time difference between data generation time and data reception time according to an embodiment of the present invention. Referring to FIG. 3 , the receiving unit 210 receives metering data including the data generation time from the measuring device 110 at predetermined intervals (eg, every 5 minutes), and the calculating unit 220 receives metering data for each reception period. A time difference between data generation time and data reception time may be calculated based on the abnormal event check time set for each. Here, it is assumed that the data generation time is that the time of the time synchronization server 120 and the power meter 100 are synchronized, and is generated on a 5-minute basis from 00:00.

For example, the calculation unit 220 determines the time difference between the data generation time and the data reception time at 00:04, which is the preset abnormal event check time 310 for the first section T1 (00:00 to 00:05). can be calculated For example, when the receiving unit 210 receives A metering data 300 at '00:00', the calculating unit 220 calculates that the data generation time 310 in the first period T1 is '00:00'. ', the time difference can be calculated as '00:00'.

For another example, the calculation unit 220 calculates the time difference between the data generation time and the data reception time at 00:09, which is the preset abnormal event check time 311 for the second period (T2, 00:05 to 00:10). can be calculated. For example, if the reception unit 210 does not receive A metering data 302 corresponding to the second interval T2 at 00:05 (301) but receives it at 00:10, the calculation unit 220 Since the data generation time is '00:05' in the second period (T2), the time difference can be calculated as '00:05'.

Returning to FIG. 1 again, the determination unit 230 classifies the calculated time difference into any one of the preset time synchronization intervals, and determines whether an abnormal event with respect to the power meter 100 has occurred based on the classified interval. can do. Here, the abnormal event is to check whether the metering data is well received at a predetermined period (eg, 5 minutes), and the reception of the metering data at the predetermined data generation time is performed in one section (eg, 5 minutes). ) is missing, an abnormal event may occur. Such an abnormal event may be caused by a time difference between the terminal and the server, system load due to dump transmission, terminal maintenance policy, and intermittent error in a data request command.

The time synchronizer 240 may synchronize the time of the measurement device 110 and the power meter 100 based on whether an abnormal event has occurred. A process of synchronizing the time between the measuring device 110 and the power meter 100 based on whether an abnormal event occurs in the power meter 100 will be described in detail with reference to FIGS. 4 and 5 .

4 is an exemplary diagram illustrating a preset time synchronization section according to an embodiment of the present invention. The preset time synchronization section is a total of 12 time intervals at 5-minute intervals from 05:00 to 06:00 using the MDMS (Maintenance Data Management System) table for a set time (eg, 06:20) once a day. It can be generated based on the average of 10 data excluding min/max among the codes. At this time, if the maximum value (max) and the minimum value (min) are two or more, they are generated by excluding one each of the maximum value and minimum value, and can be calculated only when there are 10 or more of the 12 time codes.

The MDMS table, which is a result storage table, may include, for example, meter_id, tgt_date, time_sync_cd, mn5_time_cd_count, max_value, min_value, avg_value, del_yn, cretr_id, cret_dt, admr_id, amd_dt, and the like. Here, merter_id is an id of a power meter, and tgt_date: may be a target date (YYYYMMDD).

In addition, in 'time_sync_cd', A (Abnormal) is an abnormal section, N (Normal) is a normal section, C1 (Correction 1) detailed correction section, C2 (Correction 2) detailed correction section, and C3 (Correction 3) detailed correction section may consist of

'mn5_time_cd_count' represents the number of T codes between 5 and 6 o'clock (12 if normal), max_value is the maximum value of 'metering reception time - data generation time', and min_value is 'metering reception time - data generation time' is the minimum value of , and avg_value may be an average value of 'metering reception time-data generation time'.

Del_yn indicates whether or not to delete, cretr_id indicates the initial creator id, cret_dt the initial creation date, amdr_id the modified creator id, and amd_dt the modified creation date and time. Here, the primary keys (PK) of the MDMS table may be 'meter_id' and 'tgt_date'.

Referring to FIG. 4 , the preset time synchronization section 400 may include an abnormal section (A, 401), a normal section (B, 402), a correction section (403 to 405, C1 to C3), and the like. An example of the threshold time 410 for each section is as follows.

In the abnormal section (A, 401), the threshold time 410 may be set to 6 minutes or more fast or 6 minutes or more slow.

In the normal section (B, 402), the critical time 410 may be set to faster than 6 minutes to slow within 3 minutes.

The correction sections 403 to 405 and C1 to C3 may include at least one detailed correction section. For example, the first detailed calibration interval (C1, 403) has a threshold time (410) set to more than 3 minutes to slow within 4 minutes, and the second detailed calibration interval (C2, 404) is set to the threshold time (410) The threshold time 410 of the third detailed correction section (C3, 405) may be set to between more than 5 minutes and less than 6 minutes.

The determination unit 230 may classify the calculated time difference into any one of preset time synchronization sections, and determine whether an abnormal event occurs in the power meter 100 based on the classified section.

For example, when the time difference corresponds to the abnormal section (A, 401), the message transmission unit 250 may transmit a time error event message for the power meter 100 to the manager terminal 130.

For another example, when the time difference corresponds to the normal section (B, 402) and the correction section (403 to 405, C1 to C3), the determination unit 230 periodically (eg, 5 minutes) as before It is possible to determine whether an abnormal event has occurred with respect to the power meter 100 .

When the time difference corresponds to the correction intervals 403 to 405 and C1 to C3, the determination unit 230 corrects the threshold time set in the correction intervals 403 to 405 and C1 to C3 (420), and corrects the corrected threshold time. It is possible to reset the preset time synchronization period based on.

At this time, the determination unit 230 may perform correction for the threshold time differently based on the detailed correction section corresponding to the time difference. For example, when the time difference corresponds to the first detailed correction section (C1, 403), the determination unit 230 corrects the threshold time set in the first detailed correction section (C1, 403) to '+1' minute, , reset to slow more than 4 minutes to slow within 5 minutes, and if the time difference corresponds to the second detailed correction section (C2, 404), the threshold time set in the second detailed correction section (C2, 404) is '+2' It is corrected in minutes, resets to slow over 6 minutes to slow within 7 minutes, and if the time difference corresponds to the third detailed correction section (C3, 405), the critical time set in the third detailed correction section (C3, 405) By compensating to '+3 minutes', it can be reset to slow over 8 minutes to slow within 9 minutes.

Through this, when the metering data is received late, the threshold time set in the corresponding power meter 100 is corrected based on the data generation time included in the metering data so that the metering data has an individual time and is normally received. there is. In addition, it is possible to flexibly determine an abnormal event by performing correction in consideration of a time difference between terminals such as the power meter 100 and the measuring device 110.

The calculation unit 220 calculates the time difference between the data reception time and the data generation time of the metering data received after the time synchronization interval is reset, and the determination unit 230 calculates the time difference between the reset time synchronization interval based on the calculated time difference. It can be classified into any one section.

The defect detection unit 260 may detect whether or not the power meter 100 has a defect based on the analyzed status of metering data received for a predetermined period and whether an abnormal event has occurred.

5 is an exemplary diagram for explaining a process of determining whether an abnormal event has occurred in a power meter according to an embodiment of the present invention. Referring to FIG. 5 , the times are synchronized between the plurality of power meters 100 and the time synchronization server 120, and the data generation times of the plurality of power meters 100 are 00:00:00 (520) and 00:05 Assume that they are synchronized at 5-minute intervals, such as :00 (521), 00:10:00 (522), and 00:15:00 (523). At this time, the abnormal event check time may be set at intervals of 5 minutes, such as '00:04' in the first section, '00:09' in the second section, and '00:14' in the third section, and each abnormal event check time may be set at 5-minute intervals. A time difference between data generation time and metering data reception time may be calculated for each section at the event check time.

In the case of the first section (00:00:00 to 00:05:00), the time synchronization server 120 receives A metering data 500 from A measuring device that measures a pulse signal for meter reading data of A power meter. B metering data 510 may be received at 00:00:00 from measuring device B, which is received at 00:04:20 and measures a pulse signal for meter reading data of B power meter. At this time, the data generation time may be synchronized between the A power meter and the B power meter and the time synchronization server 120 at 00:00:00.

The time synchronization server 120 calculates the time difference between the data generation time and the data reception time when the metering data is received, classifies the calculated time difference into any one of the preset time synchronization intervals, and calculates the power meter based on the classified interval. It is possible to determine whether or not an abnormal event has occurred.

For example, since the time difference between the reception time (00:00:00) of the B metering data 510 and the data generation time (00:00:00) of the time synchronization server 120 is '0', the B metering data ( 510) may be determined to correspond to the normal section.

For another example, since the time synchronization server 120 has a time difference between the reception time (00:04:20) of A metering data 500 and the data generation time (00:00:00) is about 00:04:20, It is determined that the A metering data 500 corresponds to the correction period, and based on the A metering data 500, it may be determined that an abnormal event for the power meter A has occurred.

In the case of the second section (00:05:00 to 00:10:00), the time synchronization server 120 receives A metering data 500 from A measuring device that measures a pulse signal for meter reading data of A power meter. B metering data 510 may be received at 00:05:00 from the measuring device B, which is received at 00:09:20 and measures the pulse signal for the meter reading data of the B power meter.

The time synchronization server 120 calculates the time difference between the data generation time and the data reception time at which the metering data is received, classifies the calculated time difference into one of preset time synchronization intervals, and powers the power based on the classified interval. It is possible to determine whether an abnormal event for the meter has occurred.

For example, since the time difference between the reception time (00:05:00) of the B metering data 510 and the data generation time (00:05:00) of the time synchronization server 120 is 0, the B metering data 510 It can be determined that corresponds to the normal interval.

For another example, since the time synchronization server 120 has a time difference between the reception time (00:09:20) of A metering data 500 and the data generation time (00:05:00) is about 00:04:20, It is determined that the A metering data 500 corresponds to the correction period, and based on the A metering data 500, it may be determined that an abnormal event for the power meter A has occurred.

In the case of the third section (00:10:00 to 00:15:00), the time synchronization server 120 receives A metering data 500 from A measuring device that measures a pulse signal for meter reading data of A power meter. B metering data 510 may be received at 00:10:00 from measuring device B, which is received at 00:14:20 and measures a pulse signal for meter reading data of B power meter.

The time synchronization server 120 calculates the time difference between the data generation time and the data reception time when the metering data is received, classifies the calculated time difference into any one of the preset time synchronization intervals, and calculates the power meter based on the classified interval. It is possible to determine whether or not an abnormal event has occurred.

For example, since the time difference between the reception time (00:10:00) of the B metering data 510 and the data generation time (00:10:00) of the time synchronization server 120 is 0, the B metering data 510 It can be determined that corresponds to the normal interval.

For another example, since the time synchronization server 120 has a time difference between the reception time (00:14:20) of A metering data 500 and the data generation time (00:10:00) is about 00:04:00, It is determined that the A metering data 500 corresponds to the correction period, and based on the A metering data 500, it may be determined that an abnormal event for the power meter A has occurred.

The time synchronization server 120 may synchronize the time of the power meter A based on the reset time synchronization interval by correcting and resetting the threshold time for the preset time synchronization interval of the power meter A. Through this, it is possible to have a separate view in the place of business to which power meter A belongs.

6 is an exemplary diagram for explaining a process of detecting whether a power meter has a defect based on an analysis status analyzed for metering data for a predetermined period and whether an abnormal event has occurred, according to an embodiment of the present invention.

Referring to FIG. 6 , the failure detection unit 260 analyzes the metering data received for a predetermined period (eg, 1 day) of analyzed statuses 610 and 620 and a predetermined period (eg, 5 minutes). Whether or not the power meter is defective may be detected based on whether an abnormal event determined as .

According to an embodiment, it is possible to determine whether an event 630 has occurred for 5 minutes or longer based on a predetermined period (eg, 5 minutes). For example, when the time difference between the data generation time and the metering reception time corresponds to a section between faster than 6 minutes and slow within 3 minutes, it may be determined as a normal section 631 .

For another example, the time difference between data generation time and metering reception time is 'more than 3 minutes slow - less than 4 minutes slow', 'more than 4 minutes slow - less than 5 minutes slow', 'more than 5 minutes slow - less than 6 minutes slow' , the critical time of the section to which the time difference belongs may be corrected to become a normal section 632 .

According to another embodiment, it may be determined whether or not an event (610) has occurred at a specific time (eg, 2:10).

For example, the defect detection unit 260 averages the metering data excluding two sections corresponding to min/max based on the MDMS (Maintenance Data Management System) collection status for 2 hours corresponding to 1:00 to 3:00 the previous day. When the reception time corresponds to 'faster than 6 minutes or slower than 6 minutes', the message transmission unit 250 may transmit a time error event message including a 'power meter time abnormal event' to the manager terminal 130. .

For another example, the defect detection unit 260 may detect about 80% of the data of the previous day in the MDMS (Maintenance Data Management System) collection status for 2 hours corresponding to 1:00 to 3:00 of the previous day, 'more than the date of the measuring device' A time error event message including ' may be transmitted to the manager terminal 130 .

According to another embodiment, it may be determined 620 whether an event of one day or more occurs at a specific time (eg, 2:20).

For example, the defect detection unit 260 may transmit an error event message including 'a terminal with multiple occurrences of an abnormality collected the previous day' to the manager terminal 130 in the case of a workplace where three or more abnormal events collected the previous day occurred.

For another example, the defect detection unit 260 may detect a defective terminal as a 'long-term collection abnormal terminal' for a workplace in which an abnormal event has not been released until the check time (2:10).

7 is a flowchart of a method of synchronizing time between a power meter and a measurement device that measures a pulse signal for meter reading data of a power meter in a time synchronization server according to an embodiment of the present invention. A method of synchronizing the time between a power meter and a measuring device measuring a pulse signal for meter reading data of a power meter in the time synchronization server 120 shown in FIG. 7 is time synchronization according to the embodiments shown in FIGS. 1 to 6 It includes steps processed time-sequentially by system 1. Therefore, even if the content is omitted below, it is also applied to the method of synchronizing the time between the power meter and the measuring device that measures the pulse signal for the meter reading data in the time synchronization server 120 according to the embodiments shown in FIGS. 1 to 6. .

In step S710 , the time synchronization server 120 may receive metering data including a pulse signal and data generation time corresponding to the pulse signal from the measurement device 110 .

In step S720, the time synchronization server 120 may calculate a time difference between data generation time and data reception time at which metering data is received.

In step S730, the time synchronization server 120 may classify the calculated time difference into one of preset time synchronization intervals.

In step S740, the time synchronization server 120 may determine whether an abnormal event has occurred with respect to the power meter 100 based on the classified section.

In step S750, the time synchronization server 120 may synchronize the times of the measuring device 110 and the power meter 100 based on whether an abnormal event has occurred.

In the above description, steps S710 to S750 may be further divided into additional steps or combined into fewer steps, depending on an embodiment of the present invention. Also, some steps may be omitted as needed, and the order of steps may be switched.

1 to 7, a method for synchronizing the time between a measuring device measuring a pulse signal for meter reading data and a power meter in a time synchronization server is a computer program stored in a medium executed by a computer or instructions executable by a computer. It may also be implemented in the form of a recording medium including In addition, the method of synchronizing the time between the power meter and the measuring device measuring the pulse signal for the meter reading data in the time synchronization server through FIGS. 1 to 7 may be implemented in the form of a computer program stored in a medium executed by a computer. can

Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. Also, computer readable media may include computer storage media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be construed as being included in the scope of the present invention. do.

100: power meter
110: measuring device
120: time synchronization server
130: manager terminal
210: receiver
220: calculation unit
230: judgment unit
240: time synchronization unit
250: message transmission unit
260: defect detection unit

Claims (15)

A server for synchronizing a time between a measuring device measuring a pulse signal for meter reading data of a power meter and the power meter,
a receiver configured to receive metering data including the pulse signal and data generation time corresponding to the pulse signal from the measurement device;
a calculation unit calculating a time difference between the data generation time and the data reception time at which the metering data is received;
a determination unit that classifies the calculated time difference into one of preset time synchronization intervals and determines whether an abnormal event has occurred with respect to the power meter based on the classified interval; and
A time synchronization unit for synchronizing the time between the measurement device and the power meter based on whether the abnormal event has occurred;
The preset time synchronization section includes at least one of a normal section, a correction section, and an abnormal section,
When the time difference corresponds to the correction interval, the determination unit corrects a threshold time set in the correction interval and resets the preset time synchronization interval based on the corrected threshold time;
The correction section includes at least one detailed correction section,
The judge
The server performing the correction for the threshold time differently based on the detailed correction section corresponding to the time difference.
delete delete According to claim 1,
The calculator calculates a time difference between the data reception time and the data generation time of the metering data received after the time synchronization period is reset,
The server, wherein the determination unit classifies the metering data into any one of the reset time synchronization intervals based on the calculated time difference.
delete According to claim 1,
The server further includes a message transmission unit configured to transmit a time error event message for the power meter to a manager terminal when the time difference corresponds to the abnormal section.
According to claim 1,
The server further includes a failure detection unit that detects whether or not the power meter is defective based on an analysis status analyzed for the metering data received during a predetermined period and whether the abnormal event has occurred.
A method for synchronizing the time between a power meter and a measuring device measuring a pulse signal for meter reading data of a power meter in a server, the method comprising:
Receiving metering data including the pulse signal and data generation time corresponding to the pulse signal from the measurement device;
Calculating a time difference between the data generation time and the data reception time at which the metering data is received;
classifying the calculated time difference into one of preset time synchronization sections;
determining whether an abnormal event has occurred for the power meter based on the classified section; and
Synchronizing a time between the measuring device and the power meter based on whether the abnormal event occurs;
The preset time synchronization section includes at least one of a normal section, a correction section, and an abnormal section,
The step of determining whether the abnormal event has occurred is
correcting a threshold time set in the correction section when the time difference corresponds to the correction section; and
Resetting the preset time synchronization period based on the corrected threshold time;
The correction section includes at least one detailed correction section,
The step of determining whether the abnormal event has occurred is
The time synchronization method of claim 1 , further comprising performing correction for the threshold time differently based on detailed correction sections corresponding to the time difference.
delete delete According to claim 8,
Calculating a time difference between a data reception time and a data generation time of the metering data received after the time synchronization period is reset; and
The time synchronization method further comprising classifying the metering data into any one of the reset time synchronization intervals based on the calculated time difference.
delete According to claim 8,
and transmitting a time error event message for the power meter to a manager terminal when the time difference corresponds to the abnormal section.
According to claim 8,
The time synchronization method further comprising detecting whether or not the power meter is defective based on an analysis status analyzed for the metering data received for a predetermined period and whether the abnormal event has occurred.
A computer program stored in a medium including a sequence of instructions for synchronizing a time between a measuring device measuring a pulse signal for meter reading data of a power meter and the power meter,
When the computer program is executed by a computing device,
Receiving metering data including the pulse signal and data generation time corresponding to the pulse signal from the measurement device;
Calculating a time difference between the data generation time and the data reception time at which the metering data is received;
Classifying the calculated time difference into one of preset time synchronization sections, and determining whether an abnormal event has occurred for the power meter based on the classified section;
A sequence of instructions for synchronizing the time between the measuring device and the power meter based on whether the abnormal event occurs,
The preset time synchronization section includes at least one of a normal section, a correction section, and an abnormal section,
The correction section includes at least one detailed correction section,
When determining whether the abnormal event has occurred, if the time difference corresponds to the correction interval, correcting a threshold time set in the correction interval and resetting the preset time synchronization interval based on the corrected threshold time;
Further comprising a sequence of instructions for performing correction for the threshold time differently based on a detailed correction section corresponding to the time difference when determining whether the abnormal event has occurred.
A computer program stored on media.

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