KR20050033101A - Remote watching and controlling system for electric power system using mobile terminal - Google Patents

Abstract

A remote monitoring and controlling system for an electric power system using a mobile terminal is provided to prevent a large scale accident from occurring to the electric power system by sending a remote warning to a manager according to monitoring results of an operation state or a load state as well as image temperature distribution information for the electric power system and having the manager analyze corresponding operation state information of the electric power system. A remote monitoring and controlling system for an electric power system comprises a wired and wireless communication network(117) having a mobile communication network, a power measuring controller(107), a remote controller(109), at least one infrared thermal imaging device(103), a driver(109), a database(113), a managing terminal(111) and a communication terminal(123). The remote controller comprises a plurality of circuit breakers for each phase and port for a remote control to the electrical power system. The driver transmits thermal image information detected from the infrared thermal imaging device and measured power information detected from the power measuring controller and provide power control information to the remote controller. The managing terminal calculates surface temperature of a current thermal image information by comparing a currently detected thermal image temperature with temperature analysis information fetched from the database, transmits the current thermal image temperature and the measured power information received from the driver to the wired and wireless communication network, receives power control codes from the wired and wireless communication network, and generates power control information based on power control codes decoded based on the power control information stored in the database.

Description

Remote monitoring and control system of faucet facility using mobile communication terminal {REMOTE WATCHING AND CONTROLLING SYSTEM FOR ELECTRIC POWER SYSTEM USING MOBILE TERMINAL}

The present invention relates to remote monitoring control using wireless communication, and more particularly, to collect temperature distribution information of a power receiving facility using an infrared thermal imager, and to determine whether or not abnormality based on the collected information, according to the determination result The present invention relates to a remote monitoring and control system of a power receiving facility, through which temperature distribution information and status information of the power receiving facility are transmitted to a wireless communication terminal, so that remote control of the power receiving facility corresponding to the status information can be performed.

In general, remote monitoring and remote control of industrial facilities are being carried out due to the development of communication networks and unmanned industry. It is equipped with a predetermined infrared thermal imager, for example, a video camera, to provide a mobile communication terminal with a predetermined infrared thermal imager, such as a dangerous area inaccessible to an operator, to perform remote monitoring of the administrator. Such a remote monitoring system is disclosed in the Republic of Korea Patent Application No. 10-2002-0072956 (name of the invention: a remote monitoring device using a web camera and a remote monitoring system using the same), using a predetermined detection means such as a web camera Remote monitoring of a given place.

The remote monitoring apparatus for this purpose includes one or more detection means for capturing a predetermined image, and an image receiver for receiving predetermined image data from the detection means and processing the predetermined image data. A video decoder for converting the predetermined image data, which is an analog image transmitted from the one or more detection means, into digital image data, processor means for compressing the digital image data using a software codec, and the compressed And an interface unit for communicating with means for storing video data.

Such a component stores an image captured by a detection means such as a web camera in a predetermined storage means, so that the user can view the image in real time or at a desired time, and performs remote control according to the monitoring result. Do it.

In addition, Korean Patent Application No. 10-2001-0040267 (name of the invention: an unmanned video surveillance system using a mobile communication network and its monitoring method) is installed in a mobile communication service area and photographs a predetermined predetermined area and photographs the same. A system for converting an image into an image file and transmitting and outputting it to a switching center system through a base station is disclosed.

Such an unmanned video surveillance system includes a plurality of individual surveillance terminals that perform set control and real-time surveillance control functions according to a monolingual command transmitted through a switching center system and a wireless data communication control signal, and are uploaded from the plurality of surveillance terminals. Image file information for each monitoring area is relayed through the switching center system, processed, sorted, output to the monitor, stored on the hard disk, and also generates short-word commands for each monitoring terminal. A control and management center computer to be transmitted and a plurality of monitoring terminals are connected to a wireless mobile communication network, and the control and management center computer is connected to the Internet to relay mutual verbal information and monitoring information to each other.

Through this, it is possible to monitor the situation of a remote location or a specific area in real time using an existing mobile communication network without the establishment of an independent communication network or the deployment of a manager.

The above-mentioned remote monitoring system has been disclosed a number of types of devices through the public data, but practically only remote transmission of video or video and audio information, which can only transmit the visible situation of the home or industrial equipment A problem arises. In order to overcome this problem, a number of public data sources transmit textual information using short messages, which may be narrow in scope and suitable for determining load conditions rather than equipment conditions. In other words, the remote monitoring in the electric facility is not simply a monitoring system because it transmits only the video information of the facility, and when the information such as voltage, current, peak voltage, power, etc. of the electric facility is transmitted by text, the manager's sense Apart from the management ability, a minimal arithmetic process is required, and only local locations installed to collect this information can be monitored, which makes the system unsuitable for determining the condition of the facility.

The present invention was created to solve such a problem, an object of the present invention is to remotely alert the administrator according to the monitoring results of the operating status, load status, etc. including the image temperature distribution information for the power receiving equipment, The present invention provides a remote monitoring and control system of a power receiving facility using a mobile communication terminal, which enables to analyze the operation state information of the power receiving facility in a long distance and in a quantitative and quantitative manner.

In order to achieve the above object, a remote monitoring and control system for a power receiving facility using a mobile communication terminal according to the present invention includes a wired and wireless communication network having a mobile communication network; A power measurement controller for performing power measurement of the power receiving facility; A remote controller having a plurality of circuit breakers connected to each phase and each terminal for remote power control of the power receiving facility; At least one infrared thermal imaging device fixedly installed at a position adjacent to the power receiving facility; Transmitting respective thermal image information detected from the at least one infrared thermal imager, transmitting power measurement information according to the power measurement result detected from the power measurement controller, and providing power control information to the remote controller. driver; Among the thermal image information, at least one reference thermal image information detected in the normal state of the power receiving equipment, including the thermal detection information, temperature analysis information quantifying the temperature range corresponding to the image color, the corresponding equipment A database for storing power measurement information indicating a current power state of the controller and power control code information capable of performing remote power control; The surface temperature of the current thermal image information is calculated by comparing the currently detected thermal image information with the temperature analysis information fetched from the database, and when it is determined that a temperature difference greater than a reference value occurs as a result of the temperature difference calculation, the power is transmitted from the driver. Receive measurement information, mount the current thermal image information and the power measurement information into the wired / wireless communication network, receive a power control code from the wired / wireless communication network, and receive the power from the plurality of power control code information previously stored in the database. A management terminal for decoding the control code and generating the power control information based on the decrypted power control code; And receiving the reference thermal image information, the currently detected thermal image information, and the power measurement information through the wired / wireless communication network, and transmitting the power control code for remotely controlling the power receiving equipment to the wired / wireless communication network. Characterized in that made.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram showing a remote monitoring and control system according to the present invention. As shown, the infrared thermal imager 103 is fixedly installed at a position close to the power receiving facility 101, and the image transmission for transmitting the detection signal of the infrared thermal imager 103 to the management terminal 111. The driver 105 is connected. In addition, the power measurement controller 107 for detecting the power, the voltage of each phase (Phase), the current, peak voltage, power factor, load factor and the like of the power receiving equipment 101 and transmits it to the management terminal 111 And a remote control driver 109 for operating control of the power receiving facility 101 based on the power control signal provided from the management terminal 111.

The management terminal 111 receives image information detected from the infrared thermal imager 103, analyzes a temperature distribution of the power receiving facility 101 corresponding to the image information, and receives the power receiving facility 101 according to the analysis result. Judges whether there is an abnormality, and generates a warning message based on the judgment result. The management terminal 111 mounts the management information including the temperature distribution information when the warning message is generated to the wired / wireless communication network 117 through the communication server 115, and remotely controls the power receiving equipment 101 based on the temperature distribution information. Receive a signal from the administrator.

The management terminal 111 holds a database 113, which includes reference thermal image information detected by the infrared thermal imager 103 of the power receiving facility in a normal operation state, It includes the detected thermal image information, temperature analysis information quantifying the temperature range corresponding to the image color, power measurement information indicating the current power state of the facility and power control code information for remote power control. The temperature analysis information is for numerically analyzing the temperature distribution of the currently detected thermal image information, and when calculating the numerical change by comparing the color change of the thermal image information corresponding to the measured temperature with the temperature analysis information. Used.

The reference thermal image information is thermal image information of a power equipment of the power receiving equipment 101, for example, a transformer, a line, a bushing portion, and the like in the normal state, and thus the infrared thermal imager 103 is applied to the power equipment as described above. It is installed in each. The power measurement information is digitized power information detected from the power measurement controller 107.

The wired / wireless communication network 117 is a communication network capable of transmitting thermal image information including temperature distribution information, such as a telephone network, a mobile communication network, a satellite communication network, and is connected to a plurality of base stations 121 or a plurality of personal computers 119. It is possible. The base station 121 performs a wireless communication connection with the mobile communication terminal 123 and displays thermal image information having temperature distribution information through the display window 125 of the mobile communication terminal 123.

2 is a diagram showing the main configuration of the management terminal 111 according to the present invention. As shown, an image signal A / D converter 201 for converting an image signal including analog temperature distribution information provided from the image transmission driver 105 into a digital signal, and the image signal AD converter Coding operation for each detection position is performed, including protocol control, storage, and transmission control of image information provided by 201, and each of the power states of the power receiving equipment 101 provided from the power measurement controller 107. Receives and analyzes the parameters to determine and warn of the abnormality of the power receiving equipment 101, and in response to the power control signal provided from the manager to the remote control driver 109 to remotely control the power of the power receiving equipment 101 It consists of a processor 203 for providing a control signal. Each parameter according to the power state includes not only power measurement information but also temperature distribution information based on the image information.

In addition, a video card 213 connected to an output port of the processor 203 for displaying the temperature distribution information and the power state on a monitor, and image information having the temperature distribution information provided from the processor 203, the mobile communication network. A column compressed by the image compressing unit 205 and the image compressing unit 205, which compresses to H.323, H.324M, H.263, SIP, MPEG4, etc. to compress to a predetermined size according to the format used in the present invention. A data transmission driver 207 for providing image information to the communication server 115 and a data reception driver 209 for receiving a power control signal of an administrator input from the communication server 115.

Hereinafter, an operation according to a preferred embodiment of the present invention will be described with reference to FIG. 3. 3 is a flowchart illustrating the main functions of the present invention.

The manager fixedly installs a plurality of infrared thermal imagers 103 at each position so as to monitor the power equipment of the power receiving facility 101 to be monitored. Thereafter, in step S301 of FIG. 3, a plurality of infrared thermal imaging apparatuses 103 are assigned respective unique numbers, and the processor 203 is configured for each infrared thermal imaging apparatus 103 for each unique number in a normal operation state of the power equipment. ), That is, the reference thermal image information having the temperature distribution information is stored in the database 113. In addition, the processor 203 controls the infrared thermal imager 103 to store the current thermal image information of the power receiving facility detected by the predetermined time unit in the database 113, and at the same time, the image compression unit 205. To send).

In operation S303, the temperature difference between the current thermal image information and the temperature analysis information is calculated by comparing the current thermal image information with temperature analysis information previously stored in the database 113. This extracts the color of the image screen from the current thermal image information, and converts the extracted color into numerical information based on the temperature analysis information. Therefore, the temperature of the current thermal image information is analyzed.

In step S305, as a result of the temperature analysis of the current thermal image information, it is determined whether the temperature change is excessively higher than the reference value. In other words, by determining the load of the power receiving equipment, the degree of temperature rise due to the overcurrent of the transformer, the line, the bushing, etc., phase loss, terminal loosening, load unbalance, fire, and the like.

If the temperature rise does not exceed the reference value, continuous monitoring is performed, and as a result of the determination in step S305, if the temperature change of the power receiving equipment exceeds the reference value, step S307 is entered. In this step, the processor 203 sets an error flag as a danger warning that the temperature change of the power receiving facility 101 is detected to be higher than or equal to the reference value. In addition, the processor 203 recognizes a dangerous situation and enters a power monitoring mode for analyzing a cause of temperature rise of the power receiving facility 101.

The power receiving facility 101 monitors power through the power measurement controller 107 connected to a current detector, a voltage detector, and the like, including a plurality of image current transformers ZCT, an instrument current transformer CT, and an instrument transformer PT. In step S309, the processor 203 calculates power measurement information such as image current, voltage, current, power factor, frequency, active power, reactive power, apparent power, etc. of the power receiving facility 101 through power monitoring parameters. do. The power measurement information is calculated in predetermined time units, and the calculated results are stored in the database 113 in predetermined time units.

The processor 203 enters step S311. Here, in order to transmit a warning message including the current thermal image information and power measurement information to the mobile communication terminal 123 of the manager, the processor 203 enables the data transmission driver 207 to compress the image. The thermal image information having the compressed temperature distribution image, the power measurement information, and the warning message information (including the receiving number of the manager terminal and the unique number information of the power receiving equipment) are compressed based on a predetermined protocol. Provided to server 115. In addition, the processor 203 displays thermal image information having a temperature distribution image of a power receiving facility currently detected on the monitor 211 of the management terminal 111, and displays the power measurement information.

In step S313, the communication server 115 mounts the thermal image information, the power measurement information, and the warning message information to the wired / wireless communication network 117 to mount an exchanger (not shown) and a base station controller (not shown). It transmits to the base station 121 through. Therefore, the mobile terminal 123 carried by the manager displays the thermal image information, the power measurement information, and the warning message provided from the base station 121 through the display window 125.

The thermal image information is decompressed by the platform program of the mobile communication terminal 123, and the decompressed thermal image information is an image according to the temperature distribution of the power receiving facility 101. The display window 125 is displayed. The mobile communication terminal 123 may include a cellular phone, an IMT2000, a PDA, a GPS terminal, and the like, and thermal image information and measurement information provided to the mobile communication terminal 123 may be provided to the wired / wireless personal computer 119. to be.

Therefore, the remotely located manager can receive thermal images and measurement information of the power equipment through the corresponding mobile communication terminal 125, and determine the stability of the system based on the received information. In addition, the manager receives the reference thermal image information previously stored in the database 113 of the management terminal 111 through the connection between the mobile communication terminal 123 and the communication server 115, the reference thermal image information and the currently received The load distribution of the current power equipment is determined by comparing the temperature distribution of the thermal image information.

4 shows that the temperature distribution of the power receiving equipment is displayed on the mobile communication terminal. FIG. 4 (a) is reference thermal image information showing a thermal image of a specific power equipment, and FIG. 4 (b) is thermal image information currently received. As an example, it is displayed on the display window 125 of the mobile communication terminal 123. The manager connects the mobile communication terminal 123 to the wired / wireless communication network 117 according to the call connection request of the mobile communication terminal 123 based on the warning message, and then receives the thermal image information, the power measurement information, and the warning message. do.

The manager may visually know the load of the power receiving facility at the current specific location through the display window 125 of the mobile communication terminal 123, and may determine the accurate power state from a long distance based on the power measurement information. FIG. 5 illustrates that a plurality of pieces of information are displayed on the display window 125 of the mobile communication terminal 123 as another embodiment of the present invention.

The display window 125 simultaneously displays the reference thermal image information 401 and the temperature distribution information 403 of the current thermal image, the unique number information 405 coded for each detection position, and the power measurement information 407. To make it easier to observe.

Therefore, the manager judges whether the change in temperature distribution generated by the facility is due to potential failure, overcurrent or phase loss, load unbalance, terminal loosening, loose binding, etc. based on the thermal image information and the power measurement information. For example, if an overcurrent of the facility occurs, the temperature of the system rises and is easily judged by the current value of the power measurement information, so there is no urgent action necessary unless the temperature rise is high enough to increase the deterioration of the facility. In this case, the administrator will not command specific facility control.

On the other hand, in the case of an image formation, a voltage drop occurs in a specific phase, and a large change is found when the temperature distribution is compared with the temperature distribution information for each phase or the reference thermal image. By comparing the voltage fluctuation and voltage difference of the measurement information, the administrator can determine the open phase. In addition, when there is a temperature rise of a specific terminal portion, and there is no change in the current flowing at this time, it may be determined that the terminal is relaxed.

In addition, as a result of the power measurement information, there is no change in current and there is no increase in temperature, but if a high temperature is found at a connection point of a specific line, it may be determined that it is due to loose binding of the corresponding terminal. And, if the temperature rises sharply due to fire, it will be easily judged by the temperature distribution information.In the case of unbalanced load, the temperature rises for each phase of the equipment, and if the detected value of the current appears high in some phases, Could be.

Therefore, the manager receives the temperature change and measurement information for each facility through the mobile communication terminal 123 through the steps S315 and S317 to detect the state of the power receiving facility, and then through the keypad of the mobile communication terminal 123 as necessary. Perform remote control of the installation. That is, the control code corresponding to the power control code information previously stored in the database 113 is input through the keypad, and the input control code information is provided to the management terminal 111 via the communication server 115.

In operation S319, the management terminal 111 compares the control code information input from the administrator with the power control code information previously stored in the database 113 to perform decryption of the control code information, and the decryption result is stored remotely. Transfer to control driver 109. Remote control driver 109 is composed of a plurality of circuit breakers (Circuit Breaker), the power cut control of the power receiving equipment 101 can be partially made if necessary. Accordingly, the decoding result of the control code information performs power control of the power receiving equipment 101 through the remote control driver 109.

For example, when the temperature rise due to the phase loss, based on the control code information provided from the administrator, it is possible to cut off the specific power supply of the power receiving equipment 101, and in the event of a fire of the equipment by removing the power supply and removing part of the load Therefore, the power receiving equipment 101 can be stabilized.

The remote monitoring and control system of a power receiving facility using a mobile communication terminal according to the present invention is only one embodiment, and the present invention is not limited to the above-described embodiment, and as claimed in the following claims. Without departing from the gist of the present invention, those skilled in the art to which the present invention pertains to the technical spirit of the present invention to the extent that various modifications can be made.

As described above, the remote monitoring and control system of the power receiving facility using the mobile communication terminal of the present invention is equipped with an infrared thermal imaging device in the proximity position of each major facility of the power receiving facility, and the reference thermal image detected through the infrared thermal imaging device If a change is detected above the reference value in contrast to the information and thermal image information detected in the normal state of the power receiving equipment, the thermal image information is transmitted to the mobile communication terminal of the administrator, including a warning message. Power monitoring and remote control of the manager can be accurately performed based on the temperature distribution and power measurement value of the information, thereby increasing the ease of power monitoring.

In addition, the manager can intuitively know the overall status of the facility based on the real-time temperature distribution information received by the mobile communication terminal, unlike the judgment by the numerical information, the monitoring range or speed is relatively broad and fast. The trend can be judged to obtain the effect of maximizing the efficiency of system management.

In addition, the remote control can be performed through the administrator's mobile communication terminal, thereby preventing the inoperable state caused by unexpected equipment failure, thereby improving productivity and preventing an accident in advance.

1 is a network diagram illustrating monitoring and control of a power receiving facility according to the present invention.

2 is a configuration diagram illustrating the management terminal of FIG. 1.

3 is a flowchart for explaining the main operation of the present invention.

4 illustrates an embodiment of the present invention and displays temperature distribution information in the form of an image through a display window of a mobile communication terminal.

5 illustrates another embodiment of the present invention and displays temperature distribution information and power measurement information through a display window of a mobile communication terminal.

<Explanation of symbols for main drawings>

101: power receiving equipment 103: infrared thermal imager

105: image transmission driver 107: power measurement controller

109: remote control driver 111: management terminal

113: database 115: communication server

117: wired and wireless communication network 119: personal computer

121: base station 123: mobile communication terminal

125: display window 203: processor

205: Image compression unit 211: Monitor

Claims (7)

Wired and wireless communication networks having a mobile communication network; A power measurement controller for performing power measurement of the power receiving facility; A remote controller having a plurality of circuit breakers connected to each phase and each terminal for remote power control of the power receiving facility; At least one infrared thermal imaging device fixedly installed at a position adjacent to the power receiving facility; Transmitting respective thermal image information detected from the at least one infrared thermal imager, transmitting power measurement information according to the power measurement result detected from the power measurement controller, and providing power control information to the remote controller. driver; Among the thermal image information, at least one reference thermal image information detected in the normal state of the power receiving equipment, including the thermal detection information, temperature analysis information quantifying the temperature range corresponding to the image color, the corresponding equipment A database for storing power measurement information indicating a current power state of the controller and power control code information capable of performing remote power control; The surface temperature of the current thermal image information is calculated by comparing the currently detected thermal image information with the temperature analysis information fetched from the database, and when it is determined that a temperature difference greater than a reference value occurs as a result of the temperature difference calculation, the power is transmitted from the driver. Receive measurement information, mount the current thermal image information and the power measurement information into the wired / wireless communication network, receive a power control code from the wired / wireless communication network, and receive the power from the plurality of power control code information previously stored in the database. A management terminal for decoding the control code and generating the power control information based on the decrypted power control code; And A communication terminal configured to receive the reference thermal image information, the currently detected thermal image information, and the power measurement information through the wired / wireless communication network, and transmit the power control code for remotely controlling the power receiving facility to the wired / wireless communication network. Remote monitoring and control system of the power receiving equipment using a mobile communication terminal, characterized in that. The method of claim 1, wherein the management terminal is equipped with the thermal image information to the wired or wireless communication network, wherein the respective temperature distribution information is H.323, H.324, H.324M, H.263, SIP and MPEG4 Remote monitoring and control system of a power receiving facility using a mobile communication terminal, characterized in that the compression through any one of the compression method. The remote monitoring and control system of a power receiving facility using a mobile communication terminal according to claim 1, wherein the mobile communication terminal simultaneously displays the reference thermal image information, the currently detected thermal image information, and the power measurement information. . The mobile power terminal according to claim 1 or 3, wherein the power measurement information is voltage, current, power factor, frequency, active power, reactive power, apparent power for each phase, and is calculated in a predetermined time unit. Remote monitoring and control system of faucets. The remote monitoring and control system of a power receiving facility using a mobile communication terminal according to claim 1 or 3, wherein the power measurement information is displayed as a real-time linear graph of a predetermined time unit through the communication terminal. The remote monitoring and control system of a power receiving facility using a mobile communication terminal according to claim 1, wherein the communication terminal is one of a mobile communication terminal of a cellular phone capable of outputting a color image, an IMT2000, and a PDA. The remote monitoring and control system of a power receiving facility using a mobile communication terminal according to claim 1, wherein the communication terminal is a personal computer.