KR101574716B1 - System for integrate of high and low distribution board, motor control panel and cabinet panel using power line communication - Google Patents

Abstract

The present invention relates to integrated management using power line communication and, more specifically, to an integrated management system of a high and low distribution panel, a motor control panel, and a cabinet panel using power line communication. The present invention as above is to provide an integrated management system of a high and low distribution panel, a motor control panel, and a cabinet panel using power line communication which comprises: a remote place PC (100) or a mobile terminal (700) to generally execute the state monitoring of a plurality of loads (500) wherein a separate ID is added by load to able to remotely monitor, and control, record, etc. and to perform remote control; a load state monitoring and controlling device (200) to perform the arc determination by the state monitoring of the loads (500), the control, the record, and a waveform analysis, the determination of moment overvoltage and low voltage, analysis and prediction of a load pattern, and manager notification and blocking processes in the excess of a set range, to transmit the state of the loads (500) with the remote place PC (100) or the mobile terminal (700), and to receive the remote control from the remote place PC (100) or the mobile terminal (700); a gateway (300) to execute power line communication transmission to be able to perform the state of the loads (500) and the control and to collect power information of the loads (500); and a load controller (400) to individually control the loads (500) or control the loads (500) as a group according to the control of the remote place PC (100) or the mobile terminal (700).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated management system for a high-voltage switchboard, a motor control panel, and a distribution board using power line communication,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to integrated management using power line communication, and more particularly, to an integrated management system for a high-low voltage switchboard, a motor control panel, and a distribution board using power line communication.

(Voltage, current, power, power factor, frequency, etc.) for the control of the motor control panel and the distribution panel, and displays the data on the motor control panel and the distribution panel.

However, when the distance between the motor control board and the distribution board is too long, there is a difficult part to manage, and there is a limitation in checking the status of the motor control board and the distribution board in real time due to the increase of the management cost, In most cases, field control is inefficient.

In order to solve this problem, the detected data is transmitted to the high / low voltage switchboard or remote monitoring (PC, mobile phone, central monitoring room, etc.) by using communication. In this case, A method of communicating and a method of transmitting data using wireless communication.

However, this method is economically inefficient because an additional communication line needs to be additionally constructed, thereby increasing the construction cost and additional costs of managing the communication line.

In the implementation of a power line modem, in a power line communication path, errors may occur in data transmission due to high noise, high attenuation, and signal distortion due to poor transmission path environment due to various loads, May form a complex network and may be transmitted to other devices.

Therefore, a multipath of signal propagation occurs and a communication error occurs.

When a wireless communication system is used, a low reliability problem arises in which data transmission is not stable when it is shielded by a wall or a column.

In addition, fire statistics are generated by electricity, fire, gas, cigarette, and oil in domestic fire statistics. Electric fire is the number one cause of fire.

Therefore, in order to reduce electric fire, it is necessary to identify the cause and to take measures for protection.

The major cause of electric fire is short-circuit, overload, short-circuit and contact failure. In order to prevent electric accidents, a separate temperature sensor and an arc sensor are provided.

However, due to the installation of expensive sensors, there is a problem that the internal space in the panel is insufficient, the installation cost is increased, and a malfunction occurs due to reaction with disturbance light such as sunlight or fluorescent light.

Therefore, it is necessary to reduce the incidence of electric fire in Korea, and to monitor the high - and low - voltage switchgear, motor control panel and panel board to accurately determine the cause of electric fire.

Document 1: Korean Patent No. 10-0920368 (registered on September 29, 2009) - Integrated monitoring system using power line communication.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a power management system, a power management system, And remote surveillance data is transmitted and managed to devices capable of remote monitoring (PC, mobile phone, central monitoring room, etc.) in the high and low voltage switchboards, thereby enhancing the reliability of power management and providing a separate identifier (ID) Control or group control is possible and the maximum power of the power equipment used by the user is set so as not to exceed the target power and the load condition is automatically monitored and adjusted so that the maximum power control is possible, And an integrated management system of a distribution board, an electric power control board, and a distribution board.

According to an aspect of the present invention, there is provided an integrated management system for a high / low voltage switchboard, a motor control panel, and a distribution board using power line communication, comprising: a plurality of load 500 status monitoring and control And a remote PC 100 or a mobile device 700 that collectively executes remote control and perform remote control, An arc determination, an instantaneous overvoltage, an instantaneous undervoltage determination, a load pattern analysis and prediction, an administrator notification and a circuit breaker blocking operation when the setting range is exceeded, and the remote PC A load state monitoring and control device 200 for transmitting the state of the plurality of loads 500 to the mobile device 100 or the mobile device 700 and receiving remote control from the remote PC 100 or the mobile device 700, ; A gateway (300) for transmitting power line communication and collecting power information of the load (500) so that the plurality of loads (500) can be controlled and controlled; And a load controller 400 for individually or group-controlling the plurality of loads 500 under the control of the load state monitoring and controlling apparatus 200, the remote PC 100 or the mobile apparatus 700 .

The plurality of load controllers 400 and 420 and the load controller 440 may individually or group control the load 500 and the load controller 440 may control the load controller 400 ) And the load (500).

The load condition monitoring and control device 200 is a high and low voltage switchboard including a receiving gateway 310 and the plurality of load controllers 400 are a distribution panel or an electric motor control panel including the transmission gateway 320 .

Meanwhile, the load condition monitoring and control device 200 includes an input unit 210 receiving the power information and control information of the lower motor control panel and the distribution board from the receiving gateway 310 and transmitting the same to the main processor 230, A power supply unit 220 for supplying AC power or DC power for supplying power to the state monitoring and controlling apparatus 200, and a control unit 220 for analyzing waveforms of various power information received from the input unit 210 to determine an arc judgment, an instantaneous overvoltage, (240) for displaying the data received from the main processor (230) on the screen, and a display unit (240) for displaying data received from the main processor (230) A communication unit 250 for transmitting data received from the mobile communication terminal 230 to the mobile device 700 via the remote PC 100 or the communication network 600 in a wired or wireless manner, A control unit 260 for performing individual or group control on the load 500 based on the data of the loads 500 received from the main processor 230, And an output unit 270 for transmitting a communication signal to each of the loads 500 so as to be controllable by the receiving gateway 310 through the receiving unit 310.

The gateway 300 includes a receiving gateway 310 for the high and low voltage distribution panels, an electric motor control panel, and a transmission gateway 320 for the distribution panel. The gateway 300 is connected to the high / low voltage distribution panel or the motor control panel, An input / output unit 311 and 321 for receiving power information and transmitting the power information to the main processors 313 and 323; power units 312 and 322 for supplying AC power or DC power for powering the gateway 300; And various information received from each of the input / output units 311 and 321 is analyzed to prevent a communication error by using a turbo code and converted into a modulated waveform for power line communication and input / output units 311 and 321 The main processor 313 and the main processor 323 for transmitting the communication state to the display unit 314 or 324 and the information converted by the power line communication through the main processor 313 or 323, Displayed by sending, receiving, etc. 325 for communicating the information converted by the power line communication through the respective main processors 313, 323 to the load condition monitoring and control device 200 so as to be able to control them, ).

The load controller 400 performs power line communication between the load 500 and the on-site load controller 400, the motor control panel, and the controller of the distribution board. The load controller 400 controls the load controller 400 A power supply unit 402 for supplying AC power or DC power for supplying power to the load controller 400 and a power supply unit 402 for supplying power to the load controller 400, And a load controller 440 for controlling the load 500 with the information converted by the power line communication through the main processor 404 .

In the gateway and the load condition monitoring and control apparatus, the gateway receives a signal from an input / output unit 401 receiving communication from a power line, and controls the load condition monitoring and control unit 200, and displays various power information through the load condition monitoring and control device 200, monitors and controls the state of each load 500, determines an arc determination, an instantaneous overvoltage, and an instantaneous low voltage, Analyzing and predicting the load pattern, notifying the remote PC 100 or the mobile device 700 of the administrator when the setting range is exceeded, and transmitting an abnormality blocking signal.

On the other hand, the load condition monitoring and control apparatus 200 determines that an event for each item occurs when the calculation result change of the result change compared with the previous state occurs with respect to the load data, and the predetermined weight according to the load When the result of applying to the three-dimensional graph is within the set range, it is determined that the load is in the normal state. If the result is out of the setting range, the arc is determined. In the high frequency at the occurrence of the arc, By detecting only the high frequency of the portion intersecting with the zero point which is not performed, an erroneous operation element of the arc defect detection for locating the erroneous operation signal in the electric device as an arc can be removed. If there are eight impulse type current waveforms within 0.5 second It is judged to be an arc, and it is necessary to detect instantaneous and continuous change based on electric power information And a gong.

Here, the load condition monitoring and control device 200 senses the instantaneous overvoltage and the instantaneous undervoltage through analysis of the voltage and current waveform of the load 500. The instantaneous overvoltage is a time duration at a rated frequency of 1 minute at 0.5 cycles, Is 1.1 pu to 1.8 pu, and the duration is from 0.5 cycle to 30 cycles. The instantaneous undervoltage can be judged by the instantaneous undervoltage at 1 minute at 0.5 cycle , The degree of voltage drop is about 0.9 pu from 0.1 pu based on the effective value, and the duration is about 30 cycles in 0.5 cycles. In this case, it is judged that the instantaneous voltage is lowered. If it is judged that an arc occurs when the range is exceeded, the circuit breaker is tripped to protect the system, and the power used is measured, The target electric power of the maximum use power of the facility is set so as not to exceed the set value, and the management object of the electric power facility automatically monitors the load condition for the heating and cooling equipment and the related auxiliary equipment for the low- (500) which can be paused when the set value is exceeded, and when the power is below the set value or when the demand time is over, the load power is automatically turned on or when the set value is exceeded, And the power of the load which can be stopped temporarily is cut off to control the maximum demanded power.

The present invention has the following effects.

Firstly, load management and remote surveillance are carried out using existing power line communication to integrate various data of motor control panel and distribution board, and data is transmitted to high / low voltage switchboard and remote monitoring (PC, mobile phone, central monitoring room Etc.), it is possible to increase the reliability of the power management and assign individual identifiers (IDs) to the respective loads, so that individual control or group control is possible.

Second, the maximum power of the power equipment used by the user can be controlled by setting the target power so that it does not exceed the target power, and the power can be controlled by automatically monitoring and adjusting the load condition.

Third, since there is no need to construct a separate communication line for collecting various data, it is economically advantageous, and it is possible to provide a system capable of coping with design change quickly and flexibly.

Fourth, in order to prevent communication errors in power line communication, a turbo code method is used to detect and correct an error occurring during transmission on the transmission path to provide stable communication.

Also, the bit error probability performance is significantly improved as the number of iterations used in the decoding process increases.

Fifth, after detecting the voltage and current, it detects the arc and deterioration by separating the fault waveform and the normal waveform, prevents electric accidents, and detects instantaneous high voltage, instantaneous overvoltage, instantaneous undervoltage and instantaneous power failure through analysis of electric power waveform, It is possible to prevent electric shocks and to protect the power equipment with immediate measures.

1 is a diagram for explaining general power line communication.
FIG. 2 is a diagram for explaining an OFDM-based power line communication using a general double-binned turbo code.
FIG. 3 is a diagram for explaining a dual binary turbo encoder shown in FIG. 2. Referring to FIG.
FIG. 4 is a diagram for explaining a dual in-line turbo decoder shown in FIG. 2. FIG.
5 is a view for explaining an integrated management system of a high-low voltage switchboard, a motor control panel, and a distribution board using power line communication according to the present invention.
FIG. 6 is a view for explaining an embodiment in which an integrated management system of a high-low voltage switchboard, a motor control panel, and a distribution board using power line communication according to the present invention shown in FIG. 5 is applied.
FIG. 7 is a diagram for explaining in detail the load condition monitoring and control device of the integrated management system of the high and low voltage switchboards, the motor control panel, and the distribution board using the power line communication of the present invention shown in FIG.
FIG. 8 is a view for explaining in detail the gateway of the integrated management system of the high and low voltage switchboards, the motor control panel, and the distribution board using the power line communication of the present invention shown in FIG.
FIG. 9 is a view for explaining in detail the load controller of the integrated management system of the high and low voltage switchboards, the motor control panel, and the distribution board using the power line communication of the present invention shown in FIG.
10 is a diagram for explaining a configuration of a gateway / load status monitoring and control apparatus of an integrated management system of a high-low voltage switchboard, a motor control panel, and a distribution board using power line communication according to the present invention.
FIG. 11 is a diagram for explaining a configuration for individual control of a load controller with respect to a load in an integrated management system of a high-low voltage switchboard, a motor control panel, and a distribution board using power line communication according to the present invention shown in FIG.
12 is a diagram for explaining a configuration for group control of a load controller with respect to a load in an integrated management system of a high-low-voltage switchboard, an electric motor control panel, and a distribution board using power line communication according to the present invention shown in FIG.
13 to 14 show voltage and current waveforms in a load condition monitoring and control apparatus of an integrated management system of a high and low voltage switchboard, a motor control panel and a distribution board using power line communication according to the present invention, Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In addition, although the term used in the present invention is selected as a general term that is widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, since the meaning is described in detail in the description of the relevant invention, It is to be understood that the present invention should be grasped as a meaning of a term that is not a name of the present invention.

Further, in describing the embodiments, descriptions of technical contents which are well known in the technical field to which the present invention belongs and which are not directly related to the present invention will be omitted.

This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

1 is a diagram for explaining power line communication.

As shown in FIG. 1, a power line communication uses a conventional or newly installed power line to convert a communication signal modulated to a power supply waveform of a power line into a high frequency signal, send it out, separate it through a high frequency filter, The power network is the most widely deployed infrastructure on the planet. It converts the communication signal from high frequency of 9kHz ~ 30MHz through power line and separates it by using high frequency filter and receives signal.

These power line communications can be classified as shown in Table 1 according to communication speed.

FIG. 2 is a diagram for explaining an OFDM-based power line communication employing a dual binary turbo code.

As shown in FIG. 2, an OFDM-based power line communication employing a dual binary turbo code has a serial data stream encoded in a dual binary turbo encoder.

Then, the encoded data stream is mapped to a data symbol of symbol rate 1 / Ts in the 16QAM concept.

The resulting symbol stream is mapped to Nc data symbols.

The parallel data symbol rate is 1 / (Nc + Ts) and the parallel symbol duration is Ts.

The data symbol vector is then IFFTed.

As a result, the following OFDM signal x (n) is generated as shown in Equation (1).

이다.here

to be.

Multipath effects cause inter-symbol interference (ISI) and distort orthogonality of OFDM. In order to maintain the orthogonality of OFDM in the PLC multipath channel, a guard band is inserted in front of each OFDM block. The duration of the guard band must be greater than the channel impulse response to remove the ISI.

The last Ng samples of the jth ^th OFDM block are copied and pasted as a preamble for creating an OFDM frame s (n).

This is the well known cyclic prefix (CP).

The signal is then transmitted.

The data transmitted from the receiver demodulate the Nc samples of each frame using the FFT after removing the CP.

In power lines, noise is classified into three types: colored noise, background noise, and impulse noise.

FIG. 3 is a diagram for explaining a dual binary turbo encoder shown in FIG. 2. Referring to FIG.

Binary dual turbo encoder structure is shown.

Here, S1, S2, and S3 denote shift registers, respectively.

A binary dual turbo encoder supplies two bits per unit time as an input to a linear feedback shift register.

That is, two consecutive binary bits are formed into one 2-bit symbol, and then the encoding is performed.

At this time, the constituent encoder uses a convolutional coding scheme.

Information block The input of N bits is divided into A and B subblocks composed of N / 2 bits.

In the encoder, input A and B subblocks generate output A, B, Y1, W1, Y2, and W2 subblocks, and each subblock consists of N / 2 bits.

Therefore, a double-binned turbo code not punctured has a code rate of 1/3.

In the output, A and B subblocks are the result of systematic coding in which information bits are output as they are. Y1 and W1 subblocks are parity bits generated after passing information bits through a feedback type convolutional encoder with a double binary structure. And W2 is a parity bit generated after passing the information bits having passed through the interleaver to a feedback convolutional encoder having a double binary structure.

FIG. 4 is a diagram for explaining a dual in-line turbo decoder shown in FIG. 2. FIG.

The decoder of the binary turbo code divides consecutive input bits into information bits and parity bits through TrellisMux.

The information bit and the parity bit are used in the decoding process together with the dictionary information value generated by the previous Single Input Single Output (SISO) decoder.

Then, after the decoded result is compared with the previous decoded result value, the decoding is repeated using the additional additional information to increase the reliability of the result value.

The resultant value repeatedly decoded by the predetermined number of times is determined as a final value after being determined.

5 is a view for explaining an integrated management system of a high-voltage and low-voltage switchboard, a motor control panel, and a distribution board using power line communication according to the present invention, FIG. 6 is a schematic diagram of a high- A control panel, and a distribution board according to an embodiment of the present invention.

As shown in FIG. 5, the integrated management system of the high and low voltage switchboards, the motor control panel and the distribution board using the power line communication according to the present invention includes a remote PC 100, a load condition monitoring and control device 200, A plurality of load gateways 310 and 320, a plurality of load controllers 400 to 410, 420 and 430, a load control unit 440 and a plurality of loads 500 to 510, 520 and 530, The device 700 can be further configured.

The remote PC 100 collectively executes the state monitoring, control and recording of the load 500 at a remote place and performs remote control.

The remote PC 100 may be installed in a central monitoring room or the like.

The load condition monitoring and control device 200 monitors and controls the state of each load 500 and determines arcs by waveform analysis, instantaneous overvoltage, instantaneous undervoltage judgment, load pattern analysis and prediction, It can be configured as a PC,

The gateways 310 and 320 for receiving and transmitting transmit the power line communication through the gateway-to-gateway power line communication and the load controller 400 to enable the status and control of the load, Information (voltage, current, power, power factor, frequency, etc.) is collected.

A plurality of load controllers (400: 410, 420, 430) and a load controller (440) allow each load (500) to be individually or group controlled.

At this time, the load controller 440 is configured between the load controller 400 and the load 500.

6, the load state monitoring and controlling apparatus 200 and the receiving gateway 310 may be high and low voltage switchboards, and the transmission gateway 320 and the plurality of load controllers 400 may be connected to a distribution board Or an electric motor control board.

A plurality of loads (500: 510, 520, and 530) are assigned separate IDs for each load to enable remote monitoring.

The communication network 600 transmits the data collected by the load condition monitoring and control device 200 to the mobile device 700 and detects the state of the load 500 from the mobile device 700, To the load condition monitoring and control device (200).

The mobile device 700 can be configured as a smart device (smart phone, smart pad). The mobile device 700 can monitor the status of the load 500 transmitted through the load status monitoring and control device 200, And a program for performing remote control is installed.

FIG. 7 is a diagram for explaining in detail the load condition monitoring and control device of the integrated management system of the high and low voltage switchboards, the motor control panel, and the distribution board using the power line communication of the present invention shown in FIG.

7, the load monitoring and control device of the integrated management system of the high and low voltage switchboards, the motor control panel and the distribution board using the power line communication includes an input unit 210, a power unit 220, a main processor 230, A display unit 240, a communication unit 250, a control unit 260, and an output unit 270.

Here, the input unit 210 receives power information and control information of the lower-level motor control panel and the distribution board from the receiving gateway 310, and transmits the received information to the main processor 230.

The power supply unit 220 supplies AC power or DC power for monitoring the load condition and supplying power to the controller 200.

The main processor 230 analyzes waveforms of various power information received from the input unit 210 and transmits them to the next processor to perform arc determination, instantaneous overvoltage, instantaneous undervoltage determination, load pattern analysis and prediction, and load control.

The display unit 240 displays data received from the main processor 230 on the screen.

The communication unit 250 transmits data received from the main processor 230 to the mobile device 700 via the remote PC 100 or the communication network 600 in a wired or wireless manner.

The control unit 260 performs individual or group control based on the data of each load received from the main processor 230.

The output unit 270 sends the controlled data to the receiving gateway 310 through the main processor 230 to transmit a communication signal to each of the loads 500 so as to be controllable.

FIG. 8 is a view for explaining in detail the gateway of the integrated management system of the high and low voltage switchboards, the motor control panel, and the distribution board using the power line communication of the present invention shown in FIG.

The gateway of the integrated management system of the high and low voltage switchboards, the motor control panel and the distribution board using the power line communication according to the present invention is as shown in FIG. 8. For example, the gateways 310 for the high / low voltage switchboards, the motor control panel, And a credit gateway 320. The input / output units 311 and 321 receive power information (voltage, current, power, power factor, frequency, etc.) through a high / low voltage switchboard or a motor control panel, And transmits it to the main processors 313 and 323.

At this time, in the case of the transmission gateway 320, the information received from the main processor 323 is used to perform power line communication for data transmission to an upper receiving gateway 310.

The receiving gateway 310 inputs data information for converting the information received through the power line communication to enable communication.

The power supply units 312 and 322 supply AC power or DC power for supplying power to the gateways 310 and 320, respectively.

The main processors 313 and 323 analyze various information received from the respective input / output units 311 and 321, prevent communication errors using the turbo codes, convert them into modulation waveforms for power line communication, To the output ports of the units 311 and 321 and transmits the communication status to the display units 314 and 324.

The display units 314 and 324 display the information converted by the power line communication through the main processors 313 and 323 by transmitting and receiving by using an LED.

The communication units 315 and 325 transmit the information converted by the power line communication through the respective main processors 313 and 323 to the load condition monitoring and control unit 200 through communication.

FIG. 9 is a view for explaining in detail the load controller of the integrated management system of the high and low voltage switchboards, the motor control panel, and the distribution board using the power line communication of the present invention shown in FIG.

As shown in FIG. 9, the load controller of the integrated management system of the high and low voltage switchgear, the motor control panel and the distribution board using the power line communication according to the present invention includes a receiving load controller such as a high / low voltage switchboard, .

The load controller 400 includes an input / output unit 401, a power supply unit 402, a display unit 403, a main processor 404, and a load control unit 440.

Here, the input / output unit 401 performs power line communication between the load 500 and the load controller 400 in the transmission and reception load controllers, respectively, and the controllers of the motor control panel and the distribution board.

At this time, each load controller 400 receives an identifier from the load 500 and transmits the identifier to the input / output unit 401 so that selective control is possible.

The receiving load controller 400 transmits information and control information received from the load 500 to an upper receiving gateway 310.

The power supply unit 402 supplies AC power or DC power to supply the power to the load controller 400.

The display unit 403 displays status information of the load 500 transmitted through the main processor 404.

The load controller 440 controls the load 500 with the information converted into the power line communication through the main processor 404.

10 is a diagram for explaining a configuration of a gateway / load status monitoring and control apparatus of an integrated management system of a high-low voltage switchboard, a motor control panel, and a distribution board using power line communication according to the present invention.

The gateway / load status monitoring and control device of the integrated management system of the high and low voltage switchboards, the motor control panel and the distribution board using the power line communication according to the present invention is characterized in that the input / output part 401 receiving communication from the power line To the load condition monitoring and control device 200 so that the status and control of each load 500 can be performed.

(Voltage, current, power, power factor, frequency, and the like) through the load condition monitoring and control device 200 and monitors and controls the state of each load 500 and controls the arc judgment, the instantaneous overvoltage, Analyzes and predicts the load pattern, notifies the remote PC 100 or the mobile device 700 of the manager when the setting range is exceeded, and sends a blocking signal to the breaker in the abnormal state.

FIG. 11 is a diagram for explaining a configuration for individual control of a load controller with respect to a load in an integrated management system of a high-low voltage switchboard, a motor control panel, and a distribution board using power line communication according to the present invention shown in FIG.

11, in the integrated management system of the high and low voltage switchboards, the motor control panel and the distribution board using the power line communication according to the present invention, as shown in FIG. 11, a load controller 400 for each load, (400) are provided to enable individual control for each load, and the load controller (400) carries out power line communication to transmit it to the upper distribution panel or the load controller (400) of the motor control panel.

12 is a diagram for explaining a configuration for group control of a load controller with respect to a load in an integrated management system of a high-low-voltage switchboard, an electric motor control panel, and a distribution board using power line communication according to the present invention shown in FIG.

In the integrated management system for high and low voltage switchgear, motor control panel and distribution board using power line communication, the configuration for group control of the load controller with respect to the load is such that the load 500 can be integrated and controlled as shown in FIG. The load controller 400 is installed on the upper side and the power line communication is performed so that the selection control can be performed by giving an identifier (ID) per load 500.

13 to 14 are diagrams for explaining characteristics of a normal waveform and an arc waveform by analyzing voltage and current waveforms in an integrated management system of a high-low voltage switchboard, a motor control panel, and a distribution board using the power line communication of the present invention .

In the integrated management system of high and low voltage switchgear, motor control panel and distribution board using power line communication, the characteristics of normal waveform and arc waveform analyzed voltage and current waveform are as shown in Fig. 13, The current is slightly reduced as shown in FIG. 14, and a large current of an impulse type occurs in parallel arc. The arc current waveform is close to the sinusoidal wave, but a fine deflection phenomenon occurs at zero point of the current.

The voltage waveform is characterized by a waveform close to a square wave, which shows that the spectrum is greatly increased in both side bands and high frequency bands of the harmonics, and a harmonic component of 60Hz is displayed.

Based on the above characteristics, the load condition monitoring and control device 200 determines that an event has occurred for each item when a change in the calculation result of the comparison result compared with the previous state has occurred.

At this time, the result is again judged by applying the fuzzy rule to each of the three cases.

As a result of judging the factors for the three factors, if the result of applying the predetermined weight according to the load and applying the result to the three-dimensional graph is within the set range, it is determined that the load is in the normal state. .

In order to measure the directionality of the protection range in order to eliminate the factor of malfunction by setting the direction of the protection range in the circuit in the arc detection, a circuit for generating the reference current in the arc defect detection device is constituted, The arc waveform is detected.

By detecting only the high frequency at the portion that crosses the zero point where no high frequency is generated by the electric device in the high frequency at the occurrence of the arc, the malfunctioning element of the arc defect detection for detecting the malfunction signal in the electric device is removed.

In addition, by detecting the directionality through the position signal classification of the arc, it is possible to manufacture an arc detection blocking device which eliminates the malfunction by blocking the harmful arc, so that the arc can be detected quickly and accurately.

In this case, if the current waveform of eight impulse waveforms is present within 0.5 seconds, the determination criterion is determined as an arc, and the instantaneous and continuous change is detected and determined based on the power information (voltage, current, power, power factor, frequency, etc.).

It also detects instantaneous overvoltage and instantaneous undervoltage through voltage and current waveform analysis.

The instantaneous overvoltage is measured at a rated frequency of 1 minute at 0.5 cycles, with a voltage magnitude of 1.1 pu. To 1.8 p.u. In this case, the phenomenon in which the duration is from 0.5 cycle to 30 cycles can be detected and the instantaneous overvoltage can be determined.

The instantaneous undervoltage is approximately 1 minute at 0.5 cycles at the rated frequency, and the voltage drop is 0.1 p.u. To 0.9 p.u. In this case, it is possible to judge the instantaneous voltage drop by detecting the phenomenon that the duration becomes about 30 cycles in 0.5 cycle.

As a result, when the final arc is determined, an alarm is sounded according to the degree of occurrence of an arc, and if it is determined that an arc is generated when the set range is exceeded, the system can be protected by tripping the breaker.

Also, by measuring the used power, the target power of the maximum use power of the power equipment used by the user is set and managed so as not to exceed the set value.

The control target automatically monitors and adjusts the load status for heating and heating equipment and related auxiliary equipment for low-importance load and general business, automatically stops the load which can be paused when the set value is exceeded, Or when the demand time limit is over, the load power is automatically turned on or an alarm is generated when the set value is exceeded, and the user determines that the maximum demand power is controlled by cutting off the power of the load which may be stopped temporarily.

And transmits it to the load condition monitoring and control device 200 so that it can be remotely controlled and displayed, so that the manager can view the screen of the display unit 240 and perform status information and control, and also transmitted to the mobile device or the central monitoring room, It is possible to monitor and control the situation.

Therefore, it is possible to instantaneously cope with the situation in the field because the display of the fault history of the load 500 and the load state can be grasped in real time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that various changes and modifications will be apparent to those skilled in the art. Obviously, the invention is not limited to the embodiments described above.

Accordingly, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which fall within the scope of equivalence by alteration, substitution, substitution and the like within the scope of the present invention, Range.

In addition, it should be clarified that some configurations of the drawings are intended to explain the configuration more clearly and are provided in an exaggerated or reduced size than the actual configuration.

100: Remote PC
200: Load condition monitoring and control device
300, 310, 320: gateway for receiving and transmitting
400, 410, 420, 430: load controller
440:
500, 510, 520, 530: load
600: Network
700: Mobile device

Claims (9)

Control and recording of a plurality of loads 500 to which a separate ID for each load is assigned so that the remote monitoring can be performed and the remote PC 100 or the load 500 for performing remote control A mobile device 700 composed of a smart phone and a smart pad in which a program for performing status monitoring, control and recording as a whole and remotely executing the program is installed;
And a transmission gateway 320 of the distribution board to perform power line communication transmission so that the plurality of loads 500 can be controlled and controlled, A gateway 300 for collecting power information;
An input unit 210 receiving the power information and control information of the lower motor control panel and the distribution board from the receiving gateway 310 and transmitting the received power information and control information to the main processor 230 and the power supply of the load condition monitoring and control device 200 An instantaneous overvoltage, an instantaneous undervoltage determination, a load pattern analysis and prediction, and a load-dependent control by analyzing waveforms of various electric power information received from the input unit 210 (240) for displaying data received from the main processor (230) on the screen, and a controller (240) for receiving data received from the main processor (230) A communication unit 250 for transmitting data to the mobile device 700 via a communication network 600 in a wired or wireless manner, A control unit 260 for performing individual or group control on the load 500 on the basis of the load 500 and data controlled by the load 500 to the receiving gateway 310 through the main processor 230 And an output unit (270) for transmitting a communication signal so that each load (500) is controllable. When an operation result change of the result change compared with the previous state occurs with respect to the data of the load, It is determined that the event of the load has occurred. If the result of applying the predetermined weight to the three-dimensional graph by the load is within the set range, it is determined that the load is in the normal state. If the result is out of the set range, By detecting only the high frequency at a portion that intersects the zero point at which no high frequency is generated by the electric device in the high frequency at the time of occurrence of the arc, In order to eliminate the malfunction of the arc defect detection that misinterprets the malfunction signal in the device as an arc signal, if there are eight impulse type current waveforms within 0.5 seconds, the arc is judged and instantaneous and continuous change is detected based on the power information An instantaneous overvoltage determination, an instantaneous undervoltage determination, a load pattern analysis and prediction, an administrator notification and an interrupter blocking operation when the setting range is exceeded, A load status monitoring and control device (not shown) for transmitting the status of the plurality of loads 500 to the remote PC 100 or the mobile device 700 and receiving remote control from the remote PC 100 or the mobile device 700 200); And
A plurality of load controllers (400: 410, 420) for individually or group-controlling the plurality of loads (500) according to the control from the load condition monitoring and control device (200), the remote PC (100) 430 and a load control unit 440. The load control unit 440 is configured between the plurality of load controllers 400 and 410 and the load 500, Wherein the load controller (400, 410, 420, 430) of the control panel (400, 410, 420, 430) is a distribution board or an electric motor control board including the transmission gateway (320).
delete delete delete The method according to claim 1,
The receiving gateway 310 of the high and low voltage distribution panels of the gateway 300, the transmission control gateway 320 of the distribution panel,
Input / output units 311 and 321 for receiving power information via a voltage / current detector of a high / low voltage distribution board or a motor control panel, a distribution board, and transmitting them to the main processors 313 and 323,
Power supplies 312 and 322 for supplying AC power or DC power for powering the gateway 300,
The control unit 310 analyzes various information received from each of the input / output units 311 and 321, prevents communication errors using the turbo code, converts the information into a modulated waveform for power line communication, The main processor 313, 323 transmitting the communication status to the display port 314, 324,
Display units 314 and 324 for displaying information converted by power line communication through the main processors 313 and 323 by using an indicator,
And a communication unit (315, 325) for communicating the information converted by the power line communication through the respective main processors (313, 323) to the load condition monitoring and control device (200) so as to be controllable. Integrated management system of high and low voltage switchgear, motor control panel, and distribution board.
The method according to claim 1,
The load controller (400)
The load 500 communicates with the load controller 400 of the field, the motor controller, and the controller of the distribution board, and transmits data collected by the on-site load controller 400 to an upper load controller 400. / Output unit 401,
A power supply unit 402 for supplying AC power or DC power for supplying power to the load controller 400,
A display unit 403 for displaying status information of the load 500 transmitted through the main processor 404,
And a load controller (440) for controlling the load (500) with the information converted into the power line communication through the main processor (404). The integrated management of the high and low voltage switchgear, the motor control panel and the distribution panel using power line communication system.
The method according to claim 1,
In the gateway and the load condition monitoring and control apparatus 200,
When the gateway receives a signal from the input / output unit 401 receiving communication from the power line and transmits the signal to the load condition monitoring and control unit 200 so that the state and control of each load 500 can be performed, It is also possible to display various power information through the device 200, to monitor and control the state of each load 500, to determine an arc judgment, an instantaneous overvoltage, an instantaneous undervoltage, analyze and predict a load pattern, To the remote PC (100) or the mobile device (700), and transmits a blocking signal in the abnormal state.
delete The method according to claim 1,
The load condition monitoring and control device 200 senses the instantaneous overvoltage and the instantaneous undervoltage through the analysis of the voltage and current waveform of the load 500. The instantaneous overvoltage has a duration of one minute at 0.5 cycle at the rated frequency, Is 1.1 pu to 1.8 pu, and the duration is from 0.5 cycle to 30 cycles. Therefore, it can be judged as instantaneous overvoltage,
The instantaneous undervoltage is detected at the rated frequency for a duration of 0.5 minutes per cycle and a voltage drop of 0.1 pu to 0.9 pu based on the effective value. However,
If the arc is generated when the setting range is exceeded, the breaker is tripped to protect the system,
Also, the target power of the maximum use power of the power equipment used by the user is measured by measuring the used power and managed so as not to exceed the set value,
The electric power facility management object is to automatically monitor and adjust the load condition for the heating / cooling equipment and auxiliary equipment for low-importance load, general business, and automatically load the load 500, which may be stopped temporarily, When the power consumption is less than the set value or when the demand time is over, the load power is automatically turned on or when the set value is exceeded, the alarm is generated and the user decides to stop the power of the load Integrated management system of high and low voltage switchboard, motor control panel, and distribution board using power line communication.

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