KR102269887B1 - Power meter reading device and reading method thereof - Google Patents

Abstract

The present invention relates to an watt-hour meter reading device capable of detecting a watt-hour meter based on a load history generated by the watt-hour meter, and a meter reading method thereof. The watt-hour meter reading device includes a communication unit that receives the load history generated by the watt-hour meter, each load history includes unique time information to be distinguished from other load histories, and a memory and load history for storing the load history received through the communication unit and a processor for extracting an abnormal load history that does not satisfy continuity from among the load histories stored in the memory based on the time information included in the , and executing a control function related to the abnormal load history.

Description

Power meter reading device and method thereof {POWER METER READING DEVICE AND READING METHOD THEREOF}

The present invention relates to an watt-hour meter reading device capable of detecting a watt-hour meter based on a load history generated by the watt-hour meter, and a meter reading method thereof.

The watt-hour meter is a watt-hour meter that measures the amount of electricity used. It is installed not only in general homes but also in places that use electricity, and is a device that measures the amount of electricity and charges users.

These watt-hour meters are classified into induction-type mechanical watt-hour meters and electronic watt-hour meters according to the operation method. Electronic watt-hour meters are used in homes and industrial sites like induction-type mechanical watt-hour meters and have the same purpose of measuring power consumption, but measure various information related to electricity. With the advantage of being able to do it, it is being combined with the recently emerging remote meter reading system.

In accordance with the recent smart grid promotion trend, real-time two-way remote meter reading system construction is active. This real-time two-way remote meter reading is very important in real-time billing or demand management due to power supply shortage. The most fundamental information in this real-time two-way remote meter reading is the load profile (hereinafter referred to as 'LP') provided by the electronic watt-hour meter.

In this way, as disclosed in Korean Patent Registration No. 10-0434655, the watt-hour meter continuously generates an LP showing the user's strategic usage trend according to time for a predetermined period of time. These LPs serve as basic data for the real-time rate plan and are treated as very important data for power demand management.

Furthermore, AMI (Advanced Metering Infrastructure) and smart grid, which are essential for efficient power use, intelligent power grid operation, and demand management, are being actively developed.

AMI and Smart Grid are aimed at active demand management centered on users (customers) rather than the past supplier (power companies) oriented electricity operation methods. At the same time, a two-way communication function that can provide information is required.

At the same time, it is necessary to introduce a rate system that can respond to customer demand, such as Real Time Price and Critical Peak Pricing.

In order to satisfy these requirements, a watt-hour meter that can generate and store LP data (or measurement data) indicating the amount of electrical and mechanical energy such as the amount of electricity consumed by the customer, and the LP data of the watt-hour meter can be completely collected without error. There is a need for an existing meter reading technology.

Conventional watt-hour meters typically measure and continuously store LP data in units of 15 minutes to 1 hour, and the meter reading device collects LP data from the watt-hour meter in units of 15 minutes to 1 hour.

For example, as shown in FIG. 1 , in order for a user to acquire LP data of a watt-hour meter, a wired connection device for each type of meter and a converter for communication protocol conversion must be carried.

However, the wired method for on-site acquisition of metering data has a different watt-hour meter converter, making it inconvenient to carry, and there is a risk of acquiring LP data in an improperly positioned location, and there is a risk of a safety accident due to cross-talk between low-voltage lines in the collective instrument box.

For example, there are E-Type, standard type, and G-Type low-voltage electronic watt-hour meters. For field connection devices, E-Type uses a 4-pin cable, standard type uses an optical sensor, and G-Type uses RJ11, and high-voltage electronic The watt-hour meter uses an optical sensor as an on-site connection device.

Accordingly, when acquiring weighing data using a wired cable, there is a high risk of exposure to worker safety accidents due to inconvenient acquisition due to wired connection, connection of on-site acquisition device by improperly positioned instruments, and low-voltage wires in the collective instrument box.

Furthermore, the existing metering method may cause distortion of the amount of electricity used by customers due to omission of LP data when the real-time rate system or the peak rate system is introduced, and may reduce efficiency and reliability in constant demand management and power loss management.

Therefore, there is a need for a new metering method that prevents omission of LP data and prevents duplicate acquisition.

(Patent Document 1) JP2014-130015 A1

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems.

It is an object of the present invention to provide a watt-hour meter reading device capable of systematically analyzing and normalizing LP data and a control method thereof.

The present invention relates to an watt-hour meter reading device capable of detecting a watt-hour meter based on a load history generated by the watt-hour meter, and a meter reading method thereof.

The watt-hour meter reading device may include: a communication unit configured to receive a load history generated by the watt-hour meter; Each load history includes a unique time information to be distinguished from other load histories, the memory for storing the load history received through the communication unit; and a processor for extracting abnormal load histories that do not satisfy continuity from among the load histories stored in the memory based on time information included in the load histories, and executing a control function related to the abnormal load histories.

According to an embodiment, the processor selects a time zone in which the abnormal load history occurs, and corrects the abnormal load history based on the normal load history generated in the time zone on a day other than the day when the abnormal load history occurs. can

According to an embodiment, the processor selects one or more dates based on the characteristics of the day on which the abnormal load history occurs, and the abnormal load based on the normal load history generated in the time zone of the selected date. The history is corrected, and the selected dates may vary according to the characteristics of the day on which the abnormal load history occurs.

According to an embodiment, the processor may calculate an average of the normal load histories generated in the time zone of the selected date, and replace the abnormal load histories with the average.

According to an embodiment, the communication unit receives the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter, and the processor is generated by the first watt-hour meter based on time information included in the load history A synthetic load history may be generated by synthesizing the applied load history and the load history generated by the second dynamometer.

According to an embodiment, the processor multiplies the load history generated by the first watt-hour meter by a first magnification, multiplies the load history generated by the second watt-hour meter by a second magnification, and synthesizes to generate the synthesized load history can do.

According to an embodiment, the processor may change the first magnification based on the load history generated by the first watt-hour meter.

According to an embodiment, the number of the load histories stored in the memory is m, and an nth load history among the load histories has time information elapsed by n * t from a reference time, where m is a natural number, and n is is a natural number less than or equal to m, t is a positive real number, and the processor sequentially checks the load histories according to time information of each load histories, and the abnormality does not satisfy continuity according to the test order. Load history can be extracted.

According to an embodiment, the processor may output notification information informing of the abnormal load history in at least one of a visual, a tactile, and an auditory manner.

In addition, the detection method of the watt-hour meter reading device includes: receiving a load * power generated by the watt-hour meter through a communication unit; Each load history includes unique time information to be distinguished from other load histories, and storing the load history received through the communication unit in a memory; extracting abnormal load histories that do not satisfy continuity from among the load histories stored in the memory based on time information included in the load histories; and executing a control function related to the abnormal load history.

According to an embodiment, the extracting of the abnormal load history may include: selecting a time period in which the abnormal load history occurs; and correcting the abnormal load history based on the normal load history generated in the time zone on a day other than the day on which the abnormal load history occurred.

According to an embodiment, one or more dates are selected according to the characteristics of the day on which the abnormal load history occurs, and the abnormal load history is corrected according to the normal load history generated in the time zone of the selected date, and the The selected dates may vary according to the characteristics of the day when the abnormal load history occurs.

According to an embodiment, the step of correcting the abnormal load history may include: calculating an average of the normal load histories generated in the time zone of the selected date; and replacing the abnormal load history with the average.

According to an embodiment, the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter are received, and the load history generated by the first watt-hour meter and the second watt-hour meter based on time information included in the load history are received. The method may further include generating a synthetic load history by synthesizing the load histories generated by the power scheduler.

According to an embodiment, the generating of the composite load history may include: generating a first value obtained by multiplying the load history generated by the first watt-hour meter by a first magnification; generating a second value obtained by multiplying the load history generated by the second watt-hour meter by a second magnification; and generating the synthesized load history by synthesizing the first value and the second value.

According to an embodiment, the method may further include changing the first magnification based on the load history generated by the first watt-hour meter.

According to an embodiment, the number of the load histories stored in the memory is m, and an nth load history among the load histories has time information elapsed by n * t from a reference time, where m is a natural number, and n is wherein m is a natural number less than or equal to m, and t is a positive real number, and the extracting of the abnormal load histories may include: sequentially examining the load histories according to time information of each load histories; and extracting the abnormal load history that does not satisfy continuity according to the inspection order.

According to an embodiment, the method may further include outputting notification information informing of the abnormal load history in at least one of a visual, tactile, and auditory method.

According to the present invention, it is possible to configure a management operating system that can prevent in advance illegal acts for reducing electricity rates at the site of electric power use, and to implement a reasonable and reasonable electric power billing system. Through this, it is possible to provide a better power supply service to power users.

1 is a schematic diagram showing a conventional wired method for on-site acquisition of weighing data;
2 is a block diagram illustrating an apparatus for reading a watt-hour meter according to an embodiment of the present invention;
3 is a flow chart showing a method of reading by the watt-hour meter reading device of FIG. 2
4 is an exemplary diagram for explaining an example of correcting an abnormal load history;
5 is a block diagram for explaining a watt-hour meter reading device that receives load histories from a plurality of watt-hour meters and generates a composite load histories;
6 is a flow chart showing a method of reading by the watt-hour meter reading device of FIG. 5

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components will be given the same reference numbers regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have a meaning or role distinct from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

The watt-hour meter reading device described in the present invention may correspond to at least one of a mobile terminal and a fixed terminal. Mobile terminals include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDA), portable multimedia players (PMPs), navigation systems, slate PCs, and tablet PCs. PC), ultrabooks, and the like. The fixed terminal may include a desktop computer, a server, and the like.

The watt-hour meter reading device may be configured as a terminal to read the LP generated by the watt-hour meter, that is, the load history.

LP generally occurs at a fixed time, but may occur irregularly depending on events and settings changes that occur during operation of the watt-hour meter, such as conquest battles and autonomous meter reading.

Conventionally, in order to collect irregularly occurring LP data without omission, additional LP data is collected by adding a number of load profiles that are expected to be generated in a fixed manner at the meter reading time interval.

Additional LP data collection is not a perfect response to unexpected situations where frequent power outages occur, and it is a complex and unstructured collection process such as collecting the reload profile until the overlapping LP occurs compared to the previously collected LP data. There were many problems in the efficiency and reliability of the remote meter reading system.

In addition, in the storage of LP data, the storage space is limited, and when the storage space is full, the oldest LP data is deleted and the newly generated LP data is stored and the storage space is circulated. There was a problem in that it was difficult to determine the presence or absence of data.

FIG. 2 is a block diagram illustrating an watt-hour meter reading apparatus according to an embodiment of the present invention, and FIG. 3 is a flowchart illustrating a meter reading method of the watt-hour meter reading apparatus of FIG. 2 .

Referring to FIG. 2 , the watt-hour meter reading apparatus 200 includes a communication unit 210 , an output unit 230 , a memory 250 , and a processor 270 .

The communication unit 210 serves as a passage with all external devices connected to the watt-hour meter reading device 200 . The communication unit 210 may include one or more modules that enable wired/wireless communication between the watt-hour meter reading device 200 and the watt-hour meter 100 or between the watt-hour meter reading device 200 and the network in which the watt-hour meter 100 is located. For example, the communication unit 210 may include at least one of a mobile communication module, a wireless Internet module, a short-range communication module, a wired communication module, and a location information module.

The output unit 230 is for generating an output related to visual, auditory or tactile sense, and may include a display unit, a sound output module, an alarm unit, a haptic module, and the like.

The memory 250 includes a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory), and a RAM. (random access memory; RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic It may include at least one type of storage medium among a disk and an optical disk. The watt-hour meter reading device 200 may be operated in relation to a web storage that performs a storage function of the memory 250 on the Internet.

The processor 270 typically controls the overall operation of the watt-hour meter reading device 200 . For example, it is possible to manage the load history received from the watt-hour meter 100 and execute various second functions related thereto.

According to the hardware implementation, the embodiments described herein are ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (field programmable gate arrays) , processors, controllers, micro-controllers, microprocessors, and may be implemented using at least one of electrical units for performing other functions. In some cases, the embodiments described herein may be implemented by the processor 270 itself.

According to the software implementation, embodiments such as the procedures and functions described in this specification may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein.

The software code is a software application written in a suitable programming language, and the software code may be implemented. The software code may be stored in the memory 250 and executed by the processor 270 .

Referring to FIG. 3 , the processor 270 receives the load history generated by the watt-hour meter 100 through the communication unit 210 .

The load history generated by each watt-hour meter may be received from one or more watt-hour meters 100 through the communication unit 210 .

The processor 270 stores the load history received through the communication unit 210 in the memory 250 (S350).

Each load history includes unique time information to be distinguished from other load histories, and the load history received through the communication unit is stored in the memory 250 . Whether or not an abnormal load history is included in the load history is determined by the time information included in each load history.

The processor 270 extracts an abnormal load history that does not satisfy continuity among the load histories stored in the memory 250 (S370).

The number of the load histories stored in the memory 250 is m, and among the load histories, the nth load histories have time information elapsed by n * t from a reference time, where m is a natural number, and n is less than m. , and t may be a positive real number.

For example, the reference point may be January 1, 2019, 12:00:0:0 am, and t may be 15 minutes. If m is 2, the first load history has time information of 12:15:0 am on January 1, 2019, and the second load history has time information of 12:30: 0 am on January 1, 2019 can have

The processor 270 may sequentially inspect the load histories according to time information of each load histories, and extract the abnormal load histories that do not satisfy continuity according to the inspection order.

For example, when m is 100, the processor 270 may perform an inspection from the first load history to the 100th load history in ascending time order, and extract an abnormal load history that does not satisfy continuity.

If there are a plurality of load histories in which time information is overlapped or there is a load history in which time information returns to the past, it may be extracted as an abnormal load history. That is, when a defect occurs in the continuity of time, the load history having the defect is extracted as an abnormal load history.

The processor 270 executes a control function related to the abnormal load history (S380).

For example, the control function may output notification information informing of the abnormal load history in at least one of a visual, a tactile, and an auditory manner.

As another example, the control function may be to correct the abnormal load history.

The processor 270 may select a time period in which the abnormal load history occurs, and correct the abnormal load history on a day other than the day in which the abnormal load history occurs based on the normal load history generated in the time zone.

For example, when the abnormal load history occurs from 13:0:0 to 14:0:0, 13:0:0 to 14:0:0 may be selected as the time zone. In this case, the abnormal load histories generated from 13:0:0 to 14:0:0 are corrected.

The processor 270 may select one or more dates based on the characteristics of the day on which the abnormal load history occurred, and correct the abnormal load history based on the normal load history generated in the time zone of the selected date. have.

The selected days may vary according to the characteristics of the day when the abnormal load history occurs.

At least one of a date, weather, temperature, and day of the week may be combined with the characteristic of the day on which the abnormal load history occurs.

For example, the processor 270 may acquire the temperature of the day on which the abnormal load history occurs, and select another day on which the temperature at the same level as the acquired temperature occurs. If the day on which the abnormal load history occurs is Wednesday, August 14, 2019, and the temperature of that day is 30 degrees Celsius, the processor 270 is a Wednesday of the day except for August 14, 2019. One or more other days with a temperature of 30°C may be selected as normal days. In addition, the abnormal load history may be corrected based on the normal load history generated on the normal day.

The processor 270 may calculate an average of the normal load histories generated in the time zone of the selected date and replace the abnormal load histories with the average. For example, an abnormal load history occurs from 13:00:0 to 14:00:0 on August 14, 2019, and August 7, 2018 and August 21, 2018 are selected as normal days. can In this case, the processor 270 extracts the normal load histories that occurred on August 7, 2018 and August 21, 2018, respectively, from 13:00:0 to 14:00:0, and uses the average of them. In this way, the abnormal load history can be corrected. Specifically, the abnormal load history at 13:00:0 on August 14, 2019 is the first normal load history on August 7, 2019, 13:00:0, and the second at 13:00:0 on August 21, 2019 2 It can be replaced with the average for the normal load history. In the same way, the abnormal load history of 13:15:0 on August 14, 2019 is the third normal load history of August 7, 2019, 13:15: 0, and the third normal load history of August 21, 2019, 13:15: 0 It can be replaced with the average for the fourth normal load history.

4 is an exemplary diagram for explaining an example of correcting an abnormal load history.

As shown in FIG. 4 , a first section in which a time error occurs may be detected as an example of not satisfying continuity among the load histories stored in the memory. The processor 270 may delete the first section and correct time information of normal load histories. When the second section in which the load history is not stored is detected by the correction of the time information, the processor 270 may generate and input the load history corresponding to the second section. As such, the watt-hour meter reading apparatus 100 according to the present invention may delete or correct an abnormal load history into a normal load history, or input a normal load history during a time period in which the load history is not stored.

FIG. 5 is a block diagram illustrating a watt-hour meter reading device that receives load histories from a plurality of watt-hour meters and generates a composite load history, and FIG. 6 is a flowchart showing a meter reading method by the watt-hour meter reading device of FIG. 5 .

Korea Electric Power Corporation's electricity tariff additional system for customers who use electricity consists of "basic charge (peak charge/electricity charge) + usage (electricity used) charge + power factor charge". Among them, the basic charge is a method in which the basic charge is added to the maximum peak load among the 15-minute demand loads in order to suppress the maximum load and promote smooth power supply.

KEPCO's electricity transaction watt-hour meter reading status is based on the condition of each power receiving line (electricity user) when a customer receives power over two power receiving lines (22.9kV/154kV/345kV) from the KEPCO's power system. In), watt-hour meters for electricity transaction of three types of charge system are installed for each power receiving line, and the amount of electricity used and electricity used by each electricity transaction meter are individually metered by Korea Electric Power Corporation.

In addition, KEPCO will send electricity usage bills to customers using electricity once a month. At this time, the bill of electricity sent by the Korea Electric Power Corporation applies the amount of electricity used and the maximum peak power measured from each electricity transaction meter to the bill. Accordingly, there is a problem in that it is impossible to measure the sum peak in the same time zone for a plurality of watt-hour meters.

In order to solve this problem, the watt-hour meter reading apparatus 200 according to the present invention may receive a load history from each of the plurality of watt-hour meters 100a to 100x, and generate a composite load history by combining them. At this time, the real-time and accuracy of the composite load history can be secured by extracting the abnormal load history from the load history generated by each watt-hour meter and correcting it with the normal load history.

The processor 270 may receive the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter ( S610 ).

For example, the communication unit 210 may receive the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter.

The processor 270 may generate a synthetic load history by synthesizing the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter based on time information included in the load history (S630) .

The processor 270 may multiply the load history generated by the first watt-hour meter by a first magnification, multiply the load history generated by the second watt-hour meter by a second magnification, and synthesize to generate the composite load history.

Although not shown in the drawing, the processor 270 may change the first magnification based on the load history generated by the first watt-hour meter. Since the magnification is changed according to the load history, an optimized magnification can be applied to each watt-hour meter.

The present invention can measure the composite peak in the same time zone without using a synthetic watt-hour meter attached to the customer side of the power use, and the active power amount for each current time zone, the reactive power amount for each current time zone, the active power amount for the previous month time zone, the reactive power amount for the previous month time zone, It is possible to precisely measure the maximum power by time of the current month, the maximum power by the time of the previous month, and the power demanded for 15 minutes immediately before, saving the investment cost of separately installing a synthetic watt-hour meter at the customer side of the electricity user as in the past. In addition, it has the effect of reducing the basic electricity usage fee.

In addition, it is possible to configure a management and operating system that can prevent illegal actions to reduce electricity rates at the site of electricity use, and implement a reasonable and reasonable electricity billing system. Through this, it is possible to provide a better power supply service to power users.

The present invention can be embodied as computer-readable code on a medium in which a program is recorded. The computer-readable medium includes all kinds of recording devices in which data readable by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is also a carrier wave (eg, transmission over the Internet) that is implemented in the form of. In addition, the computer may include a terminal.

Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

100: watt-hour meter
200: watt-hour meter reading device
210: communication unit
230: output unit
250: memory
270: processor

Claims (18)

Communication unit for receiving the load history generated by the watt-hour meter;
Each load history includes a unique time information to be distinguished from other load histories, the memory for storing the load history received through the communication unit; and
A processor for extracting an abnormal load history that does not satisfy continuity among the load histories stored in the memory based on time information included in the load history, and executing a control function related to the abnormal load history,
Extracting the abnormal load history by the processor,
The load histories are inspected in an inspection order corresponding to the time information, and the inspection result, a load history including overlapping time information among the load histories, or a load including time information corresponding to a reverse order of the inspection order The watt-hour meter reading device that extracts the history as the abnormal load history. According to claim 1,
The processor is
A watt-hour meter reading device, characterized in that selecting a time zone in which the abnormal load history occurs, and correcting the abnormal load history based on the normal load history generated in the time zone on a day other than the day when the abnormal load history occurs. 3. The method of claim 2,
The processor is
Selecting one or more dates based on the characteristics of the day on which the abnormal load history occurred, and correcting the abnormal load history based on the normal load history generated in the time zone of the selected date,
The selected date is a watt-hour meter reading device, characterized in that it varies according to the characteristics of the day the abnormal load history occurs. 4. The method of claim 3,
The processor is
The watt-hour meter reading device, characterized in that the average of the normal load history generated in the time zone of the selected date is calculated, and the abnormal load history is replaced with the average. According to claim 1,
The communication unit receives the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter,
The processor is
The watt-hour meter reading device, characterized in that the combined load history is generated by synthesizing the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter based on time information included in the load history. 6. The method of claim 5,
The processor is
Multiplying the load history generated by the first watt-hour meter by a first magnification, multiplying the load history generated by the second watt-hour meter by a second magnification, and then synthesizing to generate the combined load history. 7. The method of claim 6,
The processor is
The watt-hour meter reading device, characterized in that the first magnification is changed based on the load history generated by the first watt-hour meter. According to claim 1,
The load histories stored in the memory are m,
Among the load histories, the nth load histories have time information elapsed by n * t from a reference point, where m is a natural number, n is a natural number less than or equal to m, and t is a positive real number,
The processor is
The watt-hour meter reading device, characterized in that the load histories are sequentially inspected according to time information of each load histories, and the abnormal load histories that do not satisfy continuity are extracted according to the inspection order. According to claim 1,
The processor is
The watt-hour meter reading device, characterized in that the notification information notifying the abnormal load history is output in at least one of a visual, tactile, and audible method. Receiving the load history generated by the watt-hour meter through the communication unit;
Each load history includes unique time information to be distinguished from other load histories, and storing the load history received through the communication unit in a memory;
extracting abnormal load histories that do not satisfy continuity from among the load histories stored in the memory based on time information included in the load histories; and
Including the step of executing a control function related to the abnormal load history,
The step of extracting the abnormal load history,
inspecting the load histories in an inspection order corresponding to the time information; and
and extracting, as the abnormal load history, a load history including overlapping time information from among the load histories, or a load history including time information corresponding to a reverse order of the inspection order, as the abnormal load history. of the meter reading method. 11. The method of claim 10,
The step of extracting the abnormal load history,
selecting a time period in which the abnormal load history occurs; and
and correcting the abnormal load history based on the normal load history generated in the time zone on a day other than the day on which the abnormal load history occurred. 12. The method of claim 11,
One or more dates are selected according to the characteristics of the day on which the abnormal load history occurs, the abnormal load history is corrected according to the normal load history generated in the time zone of the selected date, and the selected days are the abnormal A meter reading method of a watt-hour meter reading device, characterized in that it varies according to the characteristics of the day when the load history occurs. 13. The method of claim 12,
The step of correcting the abnormal load history is,
calculating an average of the normal load histories generated in the time zone of the selected date; and
and replacing the abnormal load history with the average. 11. The method of claim 10,
The load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter are received,
The method further comprising the step of generating a composite load history by synthesizing the load history generated by the first watt-hour meter and the load history generated by the second watt-hour meter based on time information included in the load history of the meter reading method. 15. The method of claim 14,
The step of generating the synthetic load history comprises:
generating a first value obtained by multiplying the load history generated by the first watt-hour meter by a first magnification;
generating a second value obtained by multiplying the load history generated by the second watt-hour meter by a second magnification; and
and generating the combined load history by synthesizing the first value and the second value. 16. The method of claim 15,
The meter reading method of the watt-hour meter reading device further comprising the step of changing the first magnification based on the load history generated by the first watt-hour meter. 11. The method of claim 10,
The load histories stored in the memory are m,
Among the load histories, the nth load histories have time information elapsed by n * t from a reference point, where m is a natural number, n is a natural number less than or equal to m, and t is a positive real number,
The step of extracting the abnormal load history,
sequentially examining the load histories according to time information of each load histories; and
and extracting the abnormal load history that does not satisfy continuity according to an inspection order. 18. The method of claim 17,
and outputting notification information informing of the abnormal load history in at least one of a visual, tactile, and auditory method.

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