KR102680348B1 - Apparatus for detecting wrong of electronic watt-hour meter in advanced metering infrastructure system and method thereof - Google Patents

Abstract

The present invention discloses a failure detection device and method for an electronic power meter in an AMI system. The failure detection device of the electronic power meter in the AMI system of the present invention includes an electronic power meter that has a reactive power generator that generates reactive power, reads the amount of power of the consumer and transmits it remotely; AMI server that collects meter reading data from electronic watt hour meters, stores it in a meter reading DB, and detects failures in the electronic watt hour meter; and an output unit that outputs meter reading results and fault detection results from the AMI server.

Description

Failure detection device and method of electronic watt-hour meter in ＡＩＩ system {APPARATUS FOR DETECTING WRONG OF ELECTRONIC WATT-HOUR METER IN ADVANCED METERING INFRASTRUCTURE SYSTEM AND METHOD THEREOF}

The present invention relates to a failure detection device and method for an electronic power meter in an AMI system, and more specifically, to a customer who does not use power remotely based on meter reading data collected from an electronic power meter that generates reactive power in an AMI system. It relates to a failure detection device and method of an electronic watt-hour meter in an AMI system that detects a failure of the electronic watt-hour meter and enables on-site action.

In general, the AMI system (Advanced Metering Infrastructure System) remotely reads the usage of various meters such as electricity, gas, water, hot water, and heat installed in energy-consuming consumers, while automatically collecting the relevant information from the upper level system. , refers to a two-way communication infrastructure that analyzes and processes it and then provides it back to consumers.

This AMI system is a next-generation version of the AMR system (Advanced Meter Reading System; Remote Meter Reading System), which simply collects energy usage information from existing consumers from utility companies, and adds a two-way communication function that provides energy usage information to consumers. As an energy metering infrastructure, it is being widely introduced in the power sector thanks to the activation of smart grid introduction around the world.

In such a typical AMI system, the usage of the electronic power meter installed on the consumer side is collected by a data concentration unit (DCU) using a slave modem and a master modem for AMI and then transmitted to the AMI server.

Here, the AMI server manages the configuration information of meter reading devices such as electronic power meters and modems installed for meter reading, acquires and stores meter reading data, and provides usage information for each customer through a web browser. In addition, the data concentrator unit (DCU) is a device that collects meter reading data from the consumer's electronic power meter in the AMI system. An electronic watt-hour meter is a watt-hour meter that measures and stores electricity usage by consumers and provides information through communication.

The background technology of the present invention is disclosed in Korean Patent Publication No. 2014-0120203 (published on October 13, 2014, power information measuring device for AMI system).

In this way, in the AMI system, if the voltage value is 0 based on the meter reading data, the AMI server determines that the electronic meter is defective, network signal defective, or power outage has occurred due to a failure of the voltage measurement unit, and can take on-site action.

However, when the power amount is measured as 0, there is a problem in that it is not possible to distinguish whether the customer did not use electricity normally or whether the meter reading was not performed due to a defect in the current measuring unit.

However, in preparation for the hundreds of thousands of customers who do not normally use electricity, it is realistically difficult to inspect all electricity meters to take on-site action on the very small number of meters with defective current measurement units, which leads to the problem of being neglected.

The present invention was created to improve the problems described above, and the purpose of the present invention according to one aspect is to provide customers who do not use power remotely based on meter reading data collected from an electronic power meter that generates reactive power in an AMI system. The aim is to provide a failure detection device and method for electronic watt-hour meters in an AMI system that detects failures in electronic watt-hour meters and allows on-site action.

A failure detection device for an electronic power meter in an AMI system according to an aspect of the present invention includes an electronic power meter that has a reactive power generator that generates reactive power, reads the amount of power of the consumer and transmits it remotely; AMI server that collects meter reading data from electronic watt hour meters, stores it in a meter reading DB, and detects failures in the electronic watt hour meter; and an output unit that outputs meter reading results and fault detection results from the AMI server.

In the present invention, the reactive power generator is characterized in that it is provided on the secondary side of the electronic power meter connected to the main circuit breaker of the customer.

In the present invention, the reactive power generator is characterized in that it includes a capacitor.

In the present invention, the AMI server is characterized by detecting a failure when the amount of active power and reactive power are not read based on meter reading data collected from an electronic power meter.

According to another aspect of the present invention, a method for detecting a failure of an electronic watt hour meter in an AMI system includes the steps of: an AMI server collecting meter reading data from an electronic watt hour meter equipped with a reactive power generation unit and storing it in a meter reading DB; A step where the AMI server determines whether the amount of reactive power is greater than or equal to a set value according to whether the amount of active power is read based on the meter reading data stored in the meter reading DB; And the AMI server outputs a normal output to the electronic watt-hour meter when the amount of reactive power is greater than a set value, and outputs a fault to the electronic watt-hour meter if the amount of reactive power is less than the set value.

The present invention is characterized in that the AMI server further includes a step of outputting a fault to the electronic power meter when the voltage is not read based on the meter reading data stored in the meter reading DB.

In the present invention, the step of determining whether the amount of reactive power is more than a set value is characterized in that the AMI server determines whether the amount of reactive power is more than the set value when the amount of active power is not read during a set period from meter reading data stored in the meter reading DB.

The present invention is characterized in that it further includes a step where the AMI server determines whether the amount of active power is read and, when the amount of active power is read, outputs a normal output to the electronic power meter.

An apparatus and method for detecting a failure of an electronic watt hour meter in an AMI system according to an aspect of the present invention remotely detects a failure between a customer who does not use power and the electronic watt hour meter based on meter reading data collected from an electronic watt hour meter that generates reactive power in the AMI system. By detecting a malfunction and allowing on-site action, immediate action is possible, and by shortening the customer's rate agreement period, it is possible to minimize complaints, improve reliability, and suppress rate losses resulting from unfavorable rate agreements. and can improve the reliability of the wireless meter reading project.

Figure 1 is a block diagram showing a failure detection device for an electronic power meter in an AMI system according to an embodiment of the present invention.
Figure 2 is a configuration diagram showing an electronic watt-hour meter applied to a failure detection device for an electronic watt-hour meter in an AMI system according to an embodiment of the present invention.
Figure 3 is a flowchart illustrating a method for detecting a failure of an electronic power meter in an AMI system according to an embodiment of the present invention.

Hereinafter, a failure detection device and method of an electronic power meter in an AMI system according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 is a block diagram showing a failure detection device for an electronic power meter in an AMI system according to an embodiment of the present invention, and Figure 2 is a block diagram showing a fault detection device for an electronic power meter in an AMI system according to an embodiment of the present invention. This is a configuration diagram showing the applied electronic watt-hour meter.

As shown in FIG. 1, a failure detection device for an electronic power meter in an AMI system according to an embodiment of the present invention may include an electronic power meter 10, an AMI server 20, and an output unit 40.

The electronic power meter 10 is equipped with a reactive power generator 140 that generates reactive power, and can read the amount of power consumed by the customer and transmit it remotely.

Here, as shown in FIG. 2, the electronic power meter 10 has an incoming line connected to the primary side and the customer's main breaker 130 connected to the secondary side, and a voltage measuring unit 110 that measures the voltage on the primary side and the customer's main circuit breaker 130. A current measuring unit 120 may be provided to measure the amount of power used, and a reactive power generating unit 140 may be provided on the secondary side connected to the customer's main circuit breaker 130.

At this time, the reactive power generator 140 may include a capacitor, and may be installed as a built-in type inside the electronic watt-hour meter 10 as shown in (a), or as shown in (b), the electronic watt-hour meter ( 10) It can also be installed externally.

Therefore, even when the main circuit breaker 130 is open, reactive current flows through the reactive power generator 140, and the amount of reactive power can be accumulated by reading the reactive current in the current measuring unit 120.

In addition, even when the main circuit breaker 130 is turned on, when the customer does not use electricity, reactive current flows through the reactive power generator 140, allowing the amount of reactive power to be accumulated.

In other words, even if the main breaker 130 is turned on, if the customer does not use electricity, the cord wires of all electric devices are disconnected or the electric devices are switched off, so it is as if the main breaker 130 is opened. Reactive power can be integrated.

On the other hand, the reactive power generated by the capacitor of the reactive power generation unit 140 not only generates the minimum reactive power that can be confirmed by the current measuring unit 120, but also does not generate active power, so most customers have a contract power of 10KW or less. In the case of single-phase customers, not only are they unrelated to the current rate calculation, but even if power factor rates are applied, most customers are ground power factor customers, so power factor improvement is effective.

The AMI server 20 can collect meter reading data from the electronic watt hour meter 10, store it in the meter reading DB 30, and detect a failure of the electronic watt hour meter 10.

Here, the AMI server 20 stores the meter reading data collected from the electronic power meter 10 in the meter reading DB 30 and then detects a failure when the amount of active power and reactive power are not read based on the amount of power during the set period. there is.

For example, if the active power amount is read, the electronic power meter 10 is judged to be normal, and if the active power is not read, it is determined whether the reactive power amount is more than the set value. If the reactive power amount is less than the set value, the electronic power meter 10 is judged to be normal. It can be judged as a malfunction.

In this embodiment, the electronic power meter 10 is provided with a reactive power generator 140, so that even if the main breaker 130 is opened or electricity is not used by the customer, the reactive power generator 140 generates reactive power at a set value. Since it is being generated, the amount of reactive power above the set value must be metered.

However, if the amount of reactive power is less than the set value, it may be determined that an error has occurred in the current measuring unit 120 or a failure has occurred in the electronic watt-hour meter, such as a communication failure or an operation program error.

Meanwhile, the AMI server 30 may determine that the electronic power meter 10 is broken even when the voltage is not read based on the meter reading data.

Here, the voltage measuring unit 110 is directly connected to the incoming line, so the voltage must always be read except when a power outage occurs. Therefore, if the voltage is not read, it can be determined that the electronic power meter 10 is broken.

The output unit 40 may output meter reading results and failure detection results from the AMI server 20 to enable on-site measures to be taken for the electronic power meter 10 determined to be faulty.

As described above, according to the failure detection device and method of the electronic watt hour meter in the AMI system according to the embodiment of the present invention, power is remotely supplied based on meter reading data collected from the electronic watt hour meter that generates reactive power in the AMI system. By detecting and taking on-site action on failures of customers and electronic power meters that are not in use, immediate action is possible, and reliability can be improved by minimizing complaints by shortening the rate agreement period for customers, as well as unfavorable rate agreements resulting from unfavorable rate agreements. It is possible to suppress the loss of fees and improve the reliability of the wireless meter reading business.

Figure 3 is a flowchart illustrating a method for detecting a failure of an electronic power meter in an AMI system according to an embodiment of the present invention.

As shown in FIG. 3, in the method of detecting a failure of an electronic watt hour meter in an AMI system according to an embodiment of the present invention, first, the AMI server 20 detects a fault from the electronic watt hour meter 10 equipped with the reactive power generator 140. Meter reading data is collected and stored in the meter reading DB (30) (S10).

Here, the electronic power meter 10 is provided with a reactive power generator 140 on the secondary side connected to the customer's main circuit breaker 130, and generates reactive power through the reactive power generator 140 even when the main circuit breaker 130 is open. As the current flows, the amount of reactive power can be accumulated by reading the reactive current in the current measuring unit 120.

In addition, even when the main circuit breaker 130 is turned on, when the customer does not use electricity, reactive current flows through the reactive power generator 140, allowing the amount of reactive power to be accumulated.

After saving the meter reading data in step S10, the AMI server 20 determines whether the voltage has been read based on the meter reading data stored in the meter reading DB 30 (S20).

After determining whether the voltage has been read in step S20, if the voltage has not been read, the AMI server 20 outputs a failure of the electronic power meter 10.

Here, the voltage measuring unit 110 is directly connected to the incoming line, so the voltage must always be read except when a power outage occurs, so the AMI server 20 detects a failure of the electronic power meter 10 if the voltage is not read. It can be judged as follows.

If the voltage is read in step S20, the AMI server 20 determines whether the amount of active power was read based on the amount of power during the set period based on the meter reading data stored in the meter reading DB 30 (S30).

If the active power amount is read in step S30, the AMI server 20 outputs the electronic power meter 10 as normal (S50).

On the other hand, if the amount of active power is not metered in step S30, the AMI server 20 determines whether the amount of reactive power is greater than the set value (S40).

For example, in this embodiment, the electronic power meter 10 is provided with a reactive power generator 140, so that even if the main circuit breaker 130 is opened or electricity is not used by the customer, the reactive power generator 140 generates a set value. Since it generates reactive power, the amount of reactive power above the set value must be metered.

However, if the amount of reactive power is less than the set value, it may be determined that an error has occurred in the current measuring unit 120 or a failure has occurred in the electronic watt-hour meter, such as a communication failure or an operation program error.

Therefore, in step S40, it is determined whether the amount of reactive power is more than the set value, and if it is more than the set value, the AMI server 20 outputs the electronic power meter 10 as normal (S50).

On the other hand, in step S40, it is determined whether the amount of reactive power is more than the set value, and if it is less than the set value, the AMI server 20 outputs the error as a failure of the electronic power meter 10 (S60).

As described above, according to the failure detection device and method of the electronic watt hour meter in the AMI system according to the embodiment of the present invention, power is remotely supplied based on meter reading data collected from the electronic watt hour meter that generates reactive power in the AMI system. By detecting and taking on-site action on failures of customers and electronic power meters that are not in use, immediate action is possible, and reliability can be improved by minimizing complaints by shortening the rate agreement period for customers, as well as unfavorable rate agreements resulting from unfavorable rate agreements. It is possible to suppress the loss of fees and improve the reliability of the wireless meter reading business.

Implementations described herein may be implemented, for example, as a method or process, device, software program, data stream, or signal. Although discussed only in the context of a single form of implementation (eg, only as a method), implementations of the features discussed may also be implemented in other forms (eg, devices or programs). The device may be implemented with appropriate hardware, software, firmware, etc. The method may be implemented in a device such as a processor, which generally refers to a processing device that includes a computer, microprocessor, integrated circuit, or programmable logic device. Processors also include communication devices such as computers, cell phones, portable/personal digital assistants (“PDAs”) and other devices that facilitate communication of information between end-users.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will recognize that various modifications and other equivalent embodiments are possible therefrom. You will understand.

Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: Electronic power meter 20: AMI server
30: meter reading DB 40: output unit
110: voltage measurement unit 120: current measurement unit
130: main circuit breaker 140: reactive power generation unit

Claims (8)

An electronic power meter that has a reactive power generator that generates reactive power and reads the amount of power consumed by the customer and transmits it remotely;
an AMI server that collects meter reading data from the electronic watt hour meter, stores it in a meter reading DB, and detects a failure of the electronic watt hour meter; and
Including an output unit that outputs meter reading results and fault detection results from the AMI server,
The AMI server determines whether the active power amount is read based on the meter reading data stored in the meter reading DB. If the active power amount is not read, the AMI server determines whether the reactive power amount is more than the set value. If the reactive power amount is more than the set value, the AMI server determines whether the active power amount is read. A failure detection device for an electronic watt-hour meter in an AMI system, characterized in that it detects the electronic watt-hour meter as normal and detects the electronic watt-hour meter as a failure when the amount of reactive power is less than a set value.
The failure detection device of an electronic watt hour meter in an AMI system according to claim 1, wherein the reactive power generator is provided on the secondary side of the electronic watt hour meter connected to the main circuit breaker of the customer.
The failure detection device of an electronic power meter in an AMI system according to claim 1, wherein the reactive power generator includes a capacitor.
According to claim 1, wherein the AMI server determines whether the amount of active power is read by a meter and detects the electronic power meter as normal when the amount of active power is read. Failure detection of the electronic power meter in the AMI system. Device.
A step where the AMI server collects meter reading data from an electronic power meter equipped with a reactive power generation unit and stores it in a meter reading DB;
The AMI server determines whether the amount of active power is read based on the meter reading data stored in the meter reading DB, and when the amount of active power is not read, determining whether the amount of reactive power is greater than or equal to a set value; and
The AMI server outputs a normal output to the electronic watt-hour meter when the amount of reactive power is more than a set value, and outputs a fault to the electronic watt-hour meter if the amount of reactive power is less than a set value. AMI system comprising a. Failure detection method of electronic watt hour meter.
The AMI system according to claim 5, further comprising outputting, by the AMI server, a failure to the electronic power meter when the voltage is not read based on the meter reading data stored in the meter reading DB. Failure detection method of electronic watt-hour meter.
The method of claim 5, wherein the step of determining whether the amount of reactive power is greater than or equal to a set value is performed when the amount of active power is not read during a set period from the meter reading data stored in the meter reading DB by the AMI server. A fault detection method for an electronic power meter in an AMI system characterized by determining whether an abnormality is present.
The electronic power meter of claim 5, further comprising the step of the AMI server determining whether the amount of active power is read by a meter and outputting a normal output to the electronic power meter when the amount of active power is read. Failure detection method of watt hour meter.

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