KR20060013175A - Load power supervising system for a distribution board and the method thereof - Google Patents

Abstract

The present invention relates to a load power monitoring device for a distribution box and a method thereof, and according to the present invention, by providing a warning and data analysis function for an accident such as a short circuit, a power failure, or an overload in a home distribution box, a customer immediately recognizes the accident and detects an accident. To be able to analyze.

The load power monitoring apparatus for distribution boxes according to the present invention is installed in the distribution box, the current measuring unit for measuring the current value of the input side power, the breaker for cutting off the power of the input and load side, the power state of the input and load side A sensor unit for detecting the data, a database storing the respective data output from the current measuring unit, the blocking unit, and the sensor unit, and pre-stored a voice message format corresponding to various actual situations; and analyzing and processing the data. And a data processor for creating a broadcast comment, and a broadcast equipment for broadcasting the broadcast comment.

Distribution box, leakage, power outage, overload, load power, supervision, microprocessor, breaker, sensor, SMPS, D / A converter, port, database, speaker, display, charger, load current, video current, trip

Description

Load power monitoring device for distribution box and its method {LOAD POWER SUPERVISING SYSTEM FOR A DISTRIBUTION BOARD AND THE METHOD THEREOF}

1 is a block diagram schematically showing the main configuration of a load distribution power monitor for distribution box according to the present invention.

Figure 2 is a flow chart illustrating the operation of the distribution box load power monitoring apparatus according to the present invention.

3 is a block diagram schematically showing the main configuration of a load distribution monitoring device for a distribution box according to the present embodiment;

4 is a flowchart illustrating the operation of the load distribution monitoring device for distribution boxes according to the present embodiment.

The present invention relates to a load power monitoring device for a distribution box and a method thereof, in particular for distribution boxes equipped with alarms and data analysis functions for accidents such as short circuits, power outages, and overloads in distribution boxes installed in customers such as general homes and small shopping malls. It relates to a load power monitoring device and a method thereof.

Electrical accidents caused by electrical facilities in houses and apartments are extremely dangerous in that they can cause irreversible damages to property, such as property damage or casualties, due to power outages, fires or electric shocks. In addition, the blackout accidents occur nationwide every year and are considered to be a great inconvenience to residents.

According to the survey by KECA, the types of accidents of electrical facilities were ground, equipment damage, malfunction, short circuit, carbonization, melting, breakage, collapse, among others. Accidents were most often caused by short circuits or blows.

In order to prevent damage caused by such electric accidents, electric distribution boxes which have been conventionally used in each household are provided with only a simple electric breaker such as a No Fuse Breaker (NFB) and an Earth Leakage Circuit Breaker (ELCB). In this case, the ground current, the leakage current, or the overcurrent of the rated value or more is detected to cut off the power supply from the outside.

The circuit breaker is an assembly of a switchgear, a trip device, and the like in an insulated container. The circuit breaker can be opened or closed by manual or electrical operation, and automatically cuts off the current when an overload or a short circuit occurs. Function.

In addition, the earth leakage breaker has a structure similar to the circuit breaker for the wiring, and functions to automatically cut off the current in the event of a short circuit as well as an overload and a short circuit. In particular, by inserting an image current transformer in the internal circuit to detect the current difference of the wire due to a short circuit, the circuit is automatically cut off in some cases to prevent an accident.

However, the conventional distribution box only performs a circuit breaking function, and has no function of displaying or alarming the malfunction of the electrical circuit breaker as described above, an overload state of a load-side line, or a short circuit or power failure. Therefore, there is no way for the consumer to recognize or prevent the occurrence of such an accident, and there is a risk of recurrence as well as an increase in the risk of the accident.

Accordingly, the present invention was devised to solve the above problems, and an object of the present invention is to provide an alarm and data analysis function for an accident such as a short circuit, a power failure, an overload, etc. in a home distribution box, and a customer immediately receives it. The present invention provides a load power monitoring device for distribution boxes and a method thereof for recognizing and analyzing an accident.

As a feature of the present invention for achieving the above object, the distribution box load power monitoring device according to the present invention is installed in the distribution box that the input power is distributed to a plurality of loads in the distribution box load power monitoring device for monitoring the distribution state A current measuring unit for measuring the current value of the input side power, a breaker for cutting off the power of the input and load side, a sensor unit for sensing the power state of the input and load side, the current measuring unit, And a database in which each data output from the sensor unit is stored, and a voice message format corresponding to various actual situations is stored in advance, a data processing unit for analyzing and processing the data, and creating a broadcast comment; It characterized in that it comprises a broadcast equipment for broadcasting.

In addition, as another feature of the present invention, the current measuring unit is characterized by comprising a current transformer for measuring the load current, and a differential amplifier for measuring the image current.

In addition, as another feature of the present invention, the breaker is characterized by consisting of a circuit breaker provided on the input side and a circuit breaker provided on the load side.

In another aspect of the present invention, the sensor unit is characterized in that the photo coupler.

In another aspect of the present invention, the data processor analyzes the data, extracts the voice message format corresponding to each actual situation from the database, inserts and edits the data, and edits the broadcast message. And a D / A converter for converting the broadcastment into an analog signal.

In another aspect of the present invention, the microprocessor is characterized in that the communication with the external wired and wireless communication network.

In addition, as another feature of the present invention, the broadcast equipment is characterized in that it comprises at least one or more of a speaker or a display device.

In addition, as another feature of the present invention, the distribution box load power monitoring device is characterized in that it further comprises a switching mode power supply (SMPS) that is charged itself.

In addition, as another feature of the present invention, the distribution box load power monitoring method according to the present invention is a distribution box load power monitoring method for monitoring the distribution state of the distribution box in which the input power is distributed to a plurality of loads, the load current value and Measuring the image current value, inputting it to the microprocessor and storing it in the database, and detecting whether the leakage circuit breaker is cut off to recognize that a short circuit has occurred, and in the case of a short circuit, the load current value measured in real time And inputting data such as an image current value and a circuit breaker trip time into a microprocessor and storing the data in a database, extracting a corresponding voice message format from the database, and inserting and editing the data to complete a short circuit announcement. And converting the ground fault announcement to an analog voice signal. Characterized in that it comprises the step of broadcasting them.

In addition, as another feature of the present invention, the distribution box load power monitoring method according to the present invention, in the distribution box load power monitoring method for monitoring the distribution state of the distribution box in which the input power is distributed to a plurality of loads, the load current value and Measuring the image current value, and inputting it to the microprocessor and storing it in the database, Recognizing the output of the sensor on the input side to recognize that a power failure has occurred, and in the event of a power failure, data such as power failure time Inputting to a microprocessor and storing in a database, extracting a corresponding voice message format from the database, inserting and editing the data to complete a power outage announcement, and converting the outage announcement into an analog voice signal. Converting and broadcasting the same, lighting the emergency lamp; It is characterized by.

In addition, as another feature of the present invention, the distribution box load power monitoring method according to the present invention is a distribution box load power monitoring method for monitoring the distribution state of the distribution box in which the input power is distributed to a plurality of loads, the load current value and Measuring the image current value, inputting it to the microprocessor and storing it in a database; comparing the magnitude of the load current value with the rated current value and recognizing that an overload has occurred; Sensing the cutoff state with a sensor and inputting data such as the number and cut-off state of the cut-off circuit breaker into the microprocessor and storing it in a database; extracting the corresponding voice message format from the database, inserting and editing the data; Completing an overload announcement, and the overload announcement. A characterized in that it comprises a step of converting an analog audio signal and broadcast it.

In addition, as another feature of the present invention, the load distribution monitoring method for the distribution box is characterized in that it further comprises the step of visually displaying the completed broadcast on the display device.

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

The load power monitoring apparatus for distribution boxes according to the present invention measures input power, load side voltage and current in real time in a distribution box of a general house or apartment, or a small mall, and a short circuit accident on the load side or an electrostatic accident on the input side, and an overload Data is stored and analyzed, and at the same time, the voice message is transmitted and broadcasted to the customer.

1 is a block diagram schematically showing the main configuration of a load distribution monitoring device for a distribution box according to the present invention.

Distribution load monitoring device 1 for distribution boxes according to the present invention is a current measuring device (2) for measuring the value of the current flowing in the power line connected to the input terminal, a leakage circuit breaker (3) for cutting off the power in the case of a short-circuit, overload time A circuit breaker 4 for interrupting power wiring to the load 7, sensors 5 and 6 for detecting a disconnection state between the input side and the load side, and a switching mode power supply 9 (SMPS); The microprocessor 8 and the database 12, the D / A converter 13 and the broadcasting amplifier 14 for managing and performing various operations such as analyzing and transmitting the corresponding voice message by receiving the data outputted from them, Speaker 15 and the like. At this time, the SMPS 9 is a power supply device used when the power is cut off, and is normally charged by the charger 10, and is used as an emergency power supply when the power is cut off.

The distribution box load power monitoring device 1 further includes an I / O port 11 for wired / wireless communication with the outside, and a display device 16 for displaying data of each situation.

2 is a flowchart illustrating the operation of the load distribution monitoring device 1 for distribution boxes according to the present invention.

First, when power is input, the current measuring unit 2 measures data such as a load current value and an image current value of the input power in real time and inputs it to the microprocessor 8, and the microprocessor 8 receives the data. This is stored in the database 12 attached thereto (S201). In this case, the load current value and the image current value are measured by a conventional method. Preferably, the load current value is measured using a current transformer CT, and the image current value is a current value measured at each current transformer. The difference between is measured using a differential amplifier.

When the earth leakage breaker 3 is interrupted at the time of a short circuit (S202), data such as a load current value, an image current value, and a trip time are input to the microprocessor 8 and stored in the database 12 ( S203). Then, the microprocessor 8 extracts a format of a voice leakage for pre-stored data stored in the database 12, inputs and edits the data, and completes the broadcast (S204). 13, the analog signal is converted into an analog signal, amplified by the broadcast amplifier 14, and a short circuit announcement is broadcast to the speaker 15 (S205).

That is, a voice message format suitable for various situations such as a power failure and an overload, such as a short circuit, is pre-stored in the database 12 as a WAV file or the like, and the voice message suitable for the actual situation as described above by the microprocessor 8. The format is extracted. Various data inputted to the microprocessor 8 are converted into speech data using a text-to-speech system (TTS) or the like, which is inserted into and edited in the WAV file extracted earlier, thereby completing the broadcast. .

In addition, during a power failure, the sensor 5 on the input side senses it (S206), inputs data such as a power failure time to the microprocessor 8, stores it in the database 12 (S207), and the same process as described above. By the power outage announcements and at the same time turn on the emergency lamp (S208, S209). As the sensor 5, an optical coupler made of a combination of a light emitting element and a light receiving element is preferably used.

In case of overload, the load current value measured by the current value measuring device 2 in real time flows larger than the rated current value (S210), and the sensor 6 on the load side detects the breaking state of the circuit breaker 4 for the load side. After (S211), in particular, the data such as the number and the disconnection state of the tripped circuit breaker for the load side 4 is input to the microprocessor 8 and stored in the database 12 (S212), the overload by the same process as before Announcement broadcast (S213, S214). As the sensor 6, an optical coupler is preferable.

As described above, all data stored in the database 12 is provided to an external console or an external computer through a wired / wireless communication network using the I / O port 11 and used for testing or setting a rated parameter of the device, analyzing an accident, Conversely, you can upload the necessary data from an external console or external computer.

In addition, as described above, the announcements, power failures, and overload guide broadcasts may be visually displayed on the display device 16 at the same time.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. However, the examples described below are provided to help the overall understanding of the present invention, and the present invention is not limited only to the following examples.

EXAMPLE

3 is a block diagram schematically showing the main configuration of the load power monitoring apparatus 20 for a distribution box according to the present embodiment.

The load power monitoring device 20 for distribution boxes implemented in the present embodiment measures the load current using the current transformers CT1 and CT2 21, and displays the current difference between the CT1 and CT2 as a differential amplifier U1 24. Measure the current. In addition, a flash memory 31 and an electrically erasable programmable read only memory 32 (EEPROM) are used as the database 12. The flash memory 31 has a load current value and an image current value measured in real time, Data such as trip time in case of a short circuit, power failure time in case of power failure, the number of the circuit breaker 4 for the load-side wiring in case of overload, and the disconnection state are stored, and data in the voice message format is updated in the EEPROM 32. And stored. In addition, RTC (Real Time Clock: 33) is connected to the microprocessor 29 to check the trip and power failure time in real time, using the RS-485 communication port 30 as an I / O port. Wireless network connects to an external console or an external computer. In addition, the SMPS 23 is charged by its own charger 37, and is used as an emergency power supply in case of power failure.

4 is a flowchart illustrating the operation of the load distribution monitoring device 20 for distribution boxes according to the present embodiment, which is similar to the flowchart of FIG.

First, when power is input, the load current and the image current are respectively measured by the current transformers CT1 and CT2: 21 and the differential amplifiers U1: 24, and are input to the microprocessor 29 and stored in the flash memory 31. (S401). In addition, the input side photo coupler 26 monitors whether the power is supplied to the load side and inputs it to the microprocessor 29 (S402).

If the earth leakage breaker (ELCB: 21) is cut off (S403), the load current value and the image current value measured by the current transformers (CT1, CT2: 21) and the differential amplifier (U1: 24), and the RTC (33) Data such as a trip time is input to the microprocessor 29 and stored in the flash memory 31 (S404). After completing the broadcast by extracting an audio leakage voice message format corresponding to the actual situation from the EEPROM 32 and inputting and editing the data, it is transmitted to the D / A converter 34 and the broadcast amplifier 35. By converting and amplifying the analog signal, the short-circuit guide broadcast is transmitted to the speaker (SP) 36 (S405).

If the photo coupler 26 on the input side is turned off (S406), after inputting data such as power failure time measured in real time to the microprocessor 29 and storing it in the flash memory 31 (S407), the SMPS 23 ) As an emergency power source to broadcast power outages in the same manner as before and turn on the emergency lamp (S408).

If it is determined by the microprocessor 29 that the current measurement value of the current transformers CT1 and CT2: 21 is larger than the set rated current value (S409), the number and the disconnection of the tripped load side circuit breakers NFB1 to 7:28 are determined. After detecting the state and the like by the load-side photo coupler 27 and input it to the microprocessor 29 to store in the flash memory 31 (S410), and performs the overload guide broadcast in the same manner as before (S411).

As described above, according to the present invention, in a distribution box installed in a consumer such as a general home and a small shopping mall, data such as voltage and current of the input and the load side are measured in real time to deal with an accident such as a short circuit, a power failure, or an overload. Since the announcement is made by voice message, the consumer can easily recognize the occurrence of the above-mentioned accident and can take countermeasures.

In addition, in the present invention, since various data such as an accident current and a failure time are input to the microprocessor in real time and stored in a database, an accurate accident cause can be analyzed at any time by connecting an external console or an external computer to an interface.                     

In addition, the preferred embodiment of the present invention is disclosed for the purpose of illustration, anyone of ordinary skill in the art will be possible to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications, changes, Additions and the like should be considered to be within the scope of the claims.

Claims (12)

In the distribution box load power monitoring device for monitoring the distribution state is installed in the distribution box that the input power is distributed to a plurality of loads, A current measuring unit measuring a current value of input power; A blocking unit to cut off power at the input and load sides; A sensor unit for sensing the power state of the input and load sides; A database for storing respective data output from the current measuring unit, the blocking unit, and the sensor unit, and pre-stored voice message formats corresponding to various actual situations; A data processing unit for analyzing and processing the data and creating a broadcast announcement; Load distribution monitoring device for a distribution box comprising a broadcast equipment for broadcasting the broadcast announcement. According to claim 1, wherein the current measuring unit A current transformer for measuring a load current; Load distribution power monitoring device for a distribution box, characterized in that consisting of a differential amplifier for measuring the image current. The method of claim 1, wherein the blocking unit An earth leakage circuit breaker installed at the input side; Load distribution power monitoring device for a distribution box, characterized in that consisting of a wiring breaker installed on the load side. The load power monitoring apparatus for distribution box of claim 1, wherein the sensor unit is a photo coupler. The method of claim 1, wherein the data processing unit A microprocessor for analyzing the data, extracting the voice message format corresponding to each actual situation from the database, inserting and editing the data, and editing the data into a broadcast message; Load distribution monitoring device for a distribution box, characterized in that consisting of a D / A converter for converting the broadcast to an analog signal. The load power monitoring apparatus for a distribution box according to claim 1 or 5, wherein the microprocessor communicates with an external wired / wireless communication network. The apparatus of claim 1, wherein the broadcasting equipment comprises at least one of a speaker and a display device. The load power monitoring apparatus for a distribution box according to claim 1, further comprising a switching mode power supply (SMPS) that is charged by itself. In the load power monitoring method for a distribution box for monitoring the distribution state of the distribution box in which the input power is distributed to a plurality of loads, Measuring a load current value and an image current value, inputting the same to a microprocessor, and storing the same in a database; Recognizing whether a short circuit has occurred by detecting whether the ground fault breaker is blocked; When a short circuit occurs, inputting data such as a load current value, an image current value, and a trip time of a circuit breaker measured in real time to a microprocessor and storing the data in a database; Extracting a corresponding voice message format from the database, inserting and editing the data, and completing a short announcement announcement; And converting the leakage guidance broadcasting announcement into an analog voice signal and broadcasting the same. In the load power monitoring method for a distribution box for monitoring the distribution state of the distribution box in which the input power is distributed to a plurality of loads, Measuring a load current value and an image current value, inputting the same to a microprocessor, and storing the same in a database; Recognizing whether an output of the input sensor is detected and recognizing that a power failure has occurred; When a power failure occurs, inputting data such as a power failure time into a microprocessor and storing the data in a database; Extracting a corresponding voice message format from the database and inserting and editing the data to complete a power outage announcement; And converting the power outage announcement broadcast message into an analog voice signal, broadcasting the same, and lighting an emergency lamp. In the load power monitoring method for a distribution box for monitoring the distribution state of the distribution box in which the input power is distributed to a plurality of loads, Measuring a load current value and an image current value, inputting the same to a microprocessor, and storing the same in a database; Recognizing that an overload has occurred by comparing the magnitudes of the load current value and the rated current value; Detecting an interruption state of the wire breaker with a sensor and inputting data such as the number and the disconnection state of the interrupted wire breaker into a microprocessor and storing the data in a database; Extracting a corresponding voice message format from the database and inserting and editing the data to complete an overload announcement message; And converting the overload guidance broadcast announcement into an analog voice signal and broadcasting the same. The method for monitoring load distribution for distribution boxes according to any one of claims 10 to 11, further comprising the step of visually displaying the completed broadcast on the display device. .

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