KR100431512B1 - Remote Monitoring Control System For Water Treatment Plants - Google Patents

Abstract

The present invention is applied to a power plant or an industrial plant, a plurality of regional servers for remote operation of a remote water treatment facility by region, each remotely monitor and control the water treatment facility, and the central server is remotely integrated with a plurality of regional servers A remote monitoring and control system for a water treatment plant facility for monitoring and controlling. According to the present invention, a local server monitors and controls heterogeneous or homogeneous pure water treatment facilities, wastewater treatment facilities, multiple desalination facilities, and seawater electrolysis facilities through communication lines, and collects and analyzes data transmitted from each facility. A number of regional plant remote monitoring and control systems that transmit to the central remote monitoring and control system and receive water treatment plant control data from the central system, and remotely monitor and control each of the facilities; Central remote monitoring and control system that receives data to control the facilities of the site and monitors and controls the remote monitoring and control system of each local plant in real time using augmented reality technology, and each remote monitoring and control system Number of local plant remote monitoring and control systems transmitted between Wireless (satellite, microwave) for transmitting the control data for the re-equipment consists of a network and a wired network. According to this configuration, the present invention can simultaneously remotely monitor and control homogeneous and heterogeneous water treatment facilities at the water treatment site, and can notify or directly control the driver in real time from the central server when an abnormality is detected in each local server. In addition, maintenance costs for each facility can be reduced, improving productivity.

Description

Remote Monitoring Control System for Water Treatment Plants

The present invention relates to a remote monitoring and control system of a water treatment plant facility for comprehensively monitoring and controlling water treatment facilities installed in a regionally separated power plant or other industrial plant through a communication network.

The present water treatment plant control includes a PLC control system that processes field data received from an input / output card in a programmable logic controller (PLC) by a program specified in a PLC CPU, and controls a field device through an input / output card again; It is composed of CRT monitoring system that monitors the phenomenon controlled by this PLC on the screen and controls it with the mouse and keyboard of a computer to perform water treatment. In order to control such a current plant, there is a problem in that there is a limit in productivity improvement due to a lot of labor and expenses required to operate the plant according to a predetermined size.

In addition, the current water treatment plant control is controlled by loading the data in real time by the PLC in the field, and in the CRT monitoring system, there are alarm, trend, and report functions of the data transmitted from the PLC. There is a problem that comprehensive plant monitoring and control data cannot be analyzed, trended and predicted.

In addition, conventionally, similar or similar plants for operation and maintenance of a plant have each operation department to perform MMI operation using a PLC or a single node computer. This method did not have problems in the operation of the system, but did not provide efficient plant monitoring and control in the monitoring and control of multiple spaced plants. Even if possible, since there was only a system for operating the same PLC in a network, there was a problem that it was impossible to configure different versions of the same type or different types of input / output devices in a single network.

In order to solve the above problems, the present invention, the central network server to monitor and control the water treatment plant facilities already built in the field or to be built in the future, and connected to a plurality of regional servers via satellite and wired communication network Collect, monitor and control information through the network to improve productivity due to low maintenance costs and labor for remote water treatment plant facilities, and to analyze and trend comprehensive plant monitoring and control data. In other words, there are other objectives to enable predictability, and another objective is to efficiently integrate and manage homogeneous and heterogeneous water treatment plants.

1 is an overall block diagram of a remote monitoring and control system of the present invention;

2 is a block diagram showing an example of a plurality of regional plant remote monitoring and control system shown in FIG.

3 is a block diagram showing a central remote monitoring and control system shown in FIG.

4 is a block diagram of a satellite communication network showing an example of the wireless communication network shown in FIG.

5 is a block diagram of the wired communication network shown in FIG.

<Explanation of symbols for main parts of drawing>

100: Remote monitoring and control system of many local plants

200: wireless communication network 300: wired communication network

400: central remote monitoring and control system

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

First, Figure 1 is an overall block diagram showing a remote monitoring and control system of the water treatment plant facility of the present invention.

The configuration is applied to a power plant or an industrial plant, and it is installed in various regions, and local servers are connected by heterogeneous or homogenous demineralization equipment, wastewater treatment equipment, and condensate polishing through communication lines. Remote monitoring and control of facility and Hypochlorination facility by itself, collect and analyze data transmitted from each facility, transmit to central remote monitoring and control system and receive water treatment facility control data from this central system. Remote monitoring and control of a plurality of regional plant remote monitoring and control of each facility 100 and the remote monitoring of each regional plant by receiving data collected and analyzed from each local server and data for controlling the facilities of the site And remote monitoring and control system for monitoring and controlling the control system 100 in real time And a wireless communication network 200 for transmitting the water treatment facility data transmitted between the control systems 100 and 400 using a satellite or a wireless base station, and the water treatment facility data using a wired network. It is composed of a wired communication network 300 to.

Referring to the configuration of FIG. 1 by dividing each component in detail as follows.

2 is an internal block diagram of a plurality of local plant remote monitoring and control system 100 shown in Figure 1, showing a local plant remote monitoring and control system 100 according to one of a number of examples.

The configuration includes a local server (field server) 150 composed of a local server computer and a monitor including an interface unit for input / output of PLC data, and a printer connected to print alarm, trend, and report data output from the local server. 155 and two input / output devices (PLCs) respectively provided with remote monitoring control data of the local server 150 through communication lines 115 such as a bus and interface cards 111, 121, 131, and 141, respectively. The pure water treatment plant control unit 110, the wastewater treatment plant control unit 120, the plurality of desalination plant control unit 130, which controls each water treatment of the pure water treatment plant, the wastewater treatment plant, the plurality of desalination plant, and the seawater electrolysis plant by the redundancy operation between them. Seawater electrolytic facility control unit 140, and connected to the communication line 115 receives the data of the site processed in each water treatment facility through the local server 150 or each water treatment facility It is composed of a local router 160 that receives direct input from the central remote monitoring and control system 400 and, on the contrary, connects the data transmitted from the central system with the local server or each water treatment facility. Meanwhile, when the local router 160 transmits data through a communication network, when an error occurs in one network (wireless communication network 200 (or wired communication network 300) or data is lost), the other router (wired communication network) is automatically transmitted. It includes an automatic switching function that connects the main communication network (or wireless communication network).

Here, the water treatment facilities are controlled by the corresponding facility control unit 110, 120, 130, 140, that is, the input / output device (PLC) that performs logic control, and each PLC has an interface card for mass communication with the local server 150. (111, 121, 131, 141), the interface card is connected to the interface of the local server computer 150, and data communication between the interface card and the local server interface provided in the same or different PLCs is mutually mutual. Communicate with protocols (TCP / IP, PPP, IPX, HDLC, etc.)

Briefly, each of these water treatment facilities is as follows.

First, the pure water treatment facility is a facility for producing high purity pure water required by various industries, thermal power plants, and nuclear power plants. Raw water is made of pure water through pretreatment filters, ion exchange resins, and membranes. Etc. Next, the wastewater treatment facility is a facility for stably treating BOD, COD, SS components and inorganic compounds of industrial wastewater, and is an independent treatment device (physical treatment, chemical treatment, biological treatment, sludge treatment) according to the wastewater components. It is a facility that discharges through a back. In addition, the multiple desalination plant is a facility for reducing the plurality of systemically processed plural to pure water in order to increase the economic efficiency of the power plant. . In addition, seawater electrolysis equipment is a facility that generates chlorine used to remove the corrosion and foreign substances of pipes generated by seawater used as cooling water. Hypochlorite is generated by the direct current of the rectifier while the seawater passes through the module. It is a facility to generate sodium.

Water treatment plant control unit 110, 120, 130, 140 that control these water treatment facilities, that is, the input and output device (PLC) is compatible with the type and the manufacturer of the different compatibility standards and protocols that can be supported by heterogeneous input and output devices to meet This is because the local server supports a program to set up a communication method compatible with the corresponding PLC, thereby establishing a network between heterogeneous PLCs.

In addition, the site server 150 in the field operates as an input / output data server of each site, and serves to distribute and transmit data necessary for the central medium-class server and the display server. In the field, a remote control and monitoring environment was programmed for the integration of the system with these local servers. This program basically provides graphic environment of system operation and has alarm function to have alarm or call function in case of abnormality, and to log and manage trend and report data in real time and output to printer 155 if necessary to record by the driver. Can be.

On the other hand, Figure 3 shows a block configuration of the central remote monitoring and control system 400 shown in FIG.

The configuration includes first and second central servers 411 and 412, each central server including a central server computer and a monitor, and the central server computers perform redundant operations with each other. Responsible for the integrated operation of two regional plant remote monitoring and control systems 100, collects, manages and analyzes alarm, trend and report data from all field regional servers and sends the results via the central router to the regional server 150 and its corresponding A central server 410 which transmits to the water treatment facility and transmits a command performed by the display client server, the number of local servers, and is assigned control rights from the central server 410 to receive the functions of the local server 150 in the field; A plurality of display client servers 420 for restoring operation, and connected from the central server 410 and display client servers 420 connected to the communication line 415. It is the area composed of the plant remote monitoring and control system 100, each of the local server 150 or the central router 430 is now connected to the data transmitted and received by each of the water treatment plant via the plant control unit of the direct field. On the other hand, the central router 430 automatically transmits the data through one network (wireless communication network 200 (or wired communication network 300)) in the event of an error or loss of data in the other network (wired communication network automatically) It includes an automatic switching function that connects the main communication network (or wireless communication network).

Above, the first and second central servers 411 and 412 process alarm, trend, and report data for all sites, where the data is mirrored so that other central servers can be down even if one central server is down. You can continue to log data, and a hot-backup feature is provided that automatically recovers lost data from the opposite file server when a crashed system is recovered. In addition, the central server 410 is supported by a remote control program for centrally collecting, managing and supervising control of a plant integrated in the same site.

4 is a block diagram of a satellite communication network showing an example of the wireless communication network 200 described with reference to FIGS. 1 to 3, which is connected to the local router 160 to monitor a plurality of regional plant remote monitoring and control systems 100. A plurality of regional satellite communication unit 210 for transmitting the input and output data of the satellite, a satellite (Mugunghwa satellite) 220 for transmitting the input and output data of the local satellite communication unit 210 and the central router 430 It is composed of a central satellite communication unit 230 for transmitting the input and output data of the central server 410 and the display server 420.

The microwave communication network may be used instead of the satellite communication network.

In the above, each of the plurality of local satellite communication units 210 is connected to the local connection unit 211 for connecting with the data transmitted via the local router 160, and wirelessly connected to the local connection unit 211 to modulate and demodulate the data. A local satellite modem 212, a local satellite transceiver 213 for transmitting data via the modem 212 and receiving data of a higher system through a satellite antenna, and transmitting and receiving the data using a parabolic antenna. And a local low noise amplifier (LNA) 215 coupled between the satellite transceiver 213 to reduce data loss from the local satellite antenna 214.

In the above, the local satellite modem 212 uses a low-band (L-Band) satellite modem in consideration of frequencies that may resonate with each other because data is propagated to the air. In addition, the regional satellite antenna 214 is 1.2M in diameter and has a data rate of 64 Kbps or more. The data transmitted in this way is via a high-orbiting satellite, the green light satellite 220.

In the above, the central satellite communication unit 230 includes a central satellite antenna 231 for receiving data via the satellite 220 and transmitting data from the central satellite transceiver to the satellite, and each local satellite via the antenna. A central satellite transceiver 232 for distributing and receiving data from the communication unit 210 and transmitting it to the antenna, a central low noise amplifier 233 for reducing loss of data via the central satellite antenna, and a central satellite transceiver 232 A plurality of demodulators 234 each demodulating the modulated data of the local satellite modem 212 and the local plant remote from the central server while demodulating the data of the site modulated by the local satellite communication unit 210 A central satellite modem 235 for modulating data to a monitoring and control system and sending it to the central satellite transceiver 232; The central connection unit 236 is connected to the satellite modem to send data to the central router 430.

The central satellite antenna 231 uses a parabolic antenna having a diameter of 2.4M to 3.6M.

FIG. 5 is a block diagram showing the wired communication network (ISDN, PSTN, leased circuit network) 300 shown in FIG. 1, which is connected to a plurality of local routers 160 to process water in the field from the local server 150. Local terminals 310 that input and output data to and from the water treatment facility control data from the central server 410 (or the display client server 420) and the central router 430 are connected to the central server 410. B) a central terminal 330 transmitting water treatment facility control data input / output from / to the display client server 420, and an ISDN, PSTN, or dedicated circuit network 320 linking the local terminals 310 and the central terminal 330; )

Looking at the operation of the present invention according to such a configuration as follows.

First, the input / output device (PLC) serving as the pure water treatment plant control unit 110, the wastewater treatment plant control unit 120, the plurality of desalination plant control unit 130, and the seawater electrolytic plant control unit 140 is a pure water treatment plant and a wastewater treatment plant. In addition, the control elements of the multiple desalination plant and the seawater electrolysis plant can be transmitted and received as an electric signal, and are internally converted into a computer binary to store the data in the corresponding register memory. Each PLC is assigned a unique IP address for data communication between the water treatment facility control unit and the local server 150, and the interface cards 111, 121, 131, and 141 attached to the slots of the respective PLCs are assigned. Transfer water treatment data through

The local server 150 also assigns a unique IP address and loads the desired data from the corresponding IP address of each PLC, processes the data, and stores the data in the cache memory.

Then, the central server 410 or the corresponding display client server 420 delegated with the same authority as the local server from the central server calls through the wireless and wired communication network 200, 300 and the router 160, 430. 150 transmits data stored in each. In other words, if the driver observes the desired data on the monitor, a call to the local server occurs, and a call (request polling data) occurs, such as when the alarm satisfies the specified function or the trend page tries to load the data periodically. Send the data. On the other hand, the local server and the display client server delegated the same authority as described above enables a smooth operation by the redundancy operation.

Looking at the specific control operation for each facility of the regional server 150 described above are as follows.

The data input to each water treatment plant represents the information of the plant such as the water quality concentration value, the operating speed of the machine, the operating state, and the system temperature. Data output from the water treatment plant is data used to operate the plant, such as an on / off control signal of a motor, a variable control signal of a speed, and an operation control signal of a valve or a lamp. Input / output devices such as this water treatment facility determine how to output the output signal using the stored program and the input signals stored in the program itself.

The input and output data is stored in different register memories of the water treatment plant and the respective memory registers are referenced by address. Most PLCs provide communication ports or data highways to communicate with other devices or computers. The local server 150 is programmed to read or write data in the memory register of the water treatment facility using this communication method.

Once collected at local server 150, the data is used for process monitoring, data analysis, and facility / process control. And not all registers in a water treatment plant need to always be referenced. The IP address defined in the local server 150 may be used to perform operations such as system operation, status display, trend analysis, data collection, and alarm display.

All data communicating with the local server is assigned to the IP address of the corresponding I / O device so that the specific operation of each water treatment facility can be monitored and controlled. The screen configuration of the local server is divided so that the process of each system can be observed at the same time, and each independent equipment is designated as the input / output devices 1, 2, 3, and 4 to perform parallel control.

For example, when the local server 150 controls the pure water treatment facility through the pure water treatment plant control unit 110, the tank level becomes low and the pump trips or the air pressure is insufficient. This interlocking operation can be performed by the existing pure water treatment plant control unit (i.e., input / output device) to make the status report higher, and the process control of the system such as the pure water treatment process and the regeneration process is controlled by the local server. Commands carried out in the process are to be carried out in the pure water treatment plant control unit.

Next, referring to the case where the local server 150 controls the wastewater treatment facility through the wastewater treatment facility control unit 120, all input / output data processing can be performed by the wastewater treatment facility control unit 120 (input / output device). In addition, the processed data is logged to the local server 150 through the interface card 121 and adjusts all control function values of the wastewater treatment facility by adjusting the set point and the integer data.

In addition, referring to the case where the local server 150 controls the plurality of desalination facilities through the plurality of desalination facilities control unit 130, the interlocking action and various input / output control of each tank, the pump, the temperature and the valve, etc. The desalination and regeneration process for carrying out the function of the facility as a whole can be commanded to the plurality of desalination facility control units in a predetermined order in the local server.

In addition, referring to the case where the local server 150 controls the seawater electrolysis facility through the seawater electrolysis facility control unit 140, the local server is configured in the seawater electrolysis facility 140 to control the overall operation node setting and on / off control of major devices. The control right is transferred to 150 to control the local server 150 to perform MMI operation.

As such, the regional server 150 controlling each water treatment facility collects and analyzes data of the water treatment facility and transmits the analyzed data through the local router 160 as follows.

The operating program of the local server 150 needs to define a tag, which is a unique address that can correspond to each IP address to be referred to. The IP address is a TCP between the PLC of each facility and the operating program of the local server. / IP communication is performed. PLC of each facility has a unique communication protocol, that is, IP address, and participates in network communication, and the data that can be shared through this IP are the values of the memory inside the PLC. A tag is a rule defined to be convenient when referring to the data of a PLC, and if this rule is not present, a difficulty arises in that the memory address of the PLC must be remembered. Depending on the digital input area, digital output area, analog input area, analog output area, counter, timer, etc. It can be defined to use a superscript; if it is expressed as a set of rules, the digital input area can be represented as X0000, X0001, X0002, ~, etc., and the digital output area is Y0000, Y0001, Y0002, ~ analog input area. I0000, I0001, I0002, ~ Analog output area can be expressed as O0000, O0001, O0002, ~ Counter can be expressed as C0000, C0001, C0002, ~ Timer can be expressed as T0000, T0001, T0002, ~, etc. You do not have to refer directly to. That is, the user can refer to the necessary data by using a descriptive name in the data area when constructing a TCP / IP packet. Thus, when these tags are applied to the entire network to be disclosed in the present invention, a node on the network can be referred to. The same data can be referred to even if you refer to it.In this way, the tag is applied to each area because there are thousands of data to be referred to by users in the network. Because it is difficult. However, using the tag as above, the user can easily remember it and eliminate the error of referencing the wrong address. It is necessary to define a tag which is the only address that can correspond to the address. When the system is started with the tags defined, the local server reads the register data in the most efficient way and the address of each equipment type and registers. Therefore, the tag assigned to the local server performs the optimized unique communication without mutual interference corresponding to the IP address of PLC of each facility, and the IP address of PLC is the register of PLC. It is named by the data recorded in the communication. The reason for this is that the data of the industrial facilities are related to the operation of the facility and need to be processed in real time, and if the operation setting is processed late, it may affect the productivity or generate risks. As described above, when assigning a tag to a PLC, a series of subscripts are used according to the order of addresses, and by assigning a tag as described above, communication can be optimized in the present invention. The above tags are adjacent to each other on an actual memory. Next, the method of optimizing communication by assigning a tag is as follows. First, block communication is possible. To understand the block communication method, we first look at the types of data. The data of the field is largely divided into digital data and analog data. Digital data is represented by 0 and 1 in 1 bit, such as motor start / stop, pump start stop or valve open / close. Analog data, represented as 32768 to 32767 in 2 bytes, includes water level, flow rate, PH, voltage, and current.The maximum transfer rate for a 10Mbps Ethernet network is 10,000,000 bits per second. In TCP / IP communication, a header of about 80 bytes is attached, and if some data is needed to communicate with each other individually, more overhead is generated. Consequently, efficient communication cannot be performed at the same speed. For example, if you send and receive a lot of data, for example, if you send and receive 1024 bytes of data at a time, the overhead occurs only once, but can handle much more data. Second, you can use the on-demand method. This concept is to communicate only necessary data. For example, it would be obvious that there would be a big difference in communication between all computers connected to the network to request all the data and only the most necessary data. Only essential data includes data that are monitored on alarm, trend, event and screen, and alarm indicates the failure status of the site. Basically, alarm data request should occur at least 500ms because it should be detected within 500ms. do. Trend is a function to see the change of analog data, and basically it saves data in database every 1ms ~ several tens of seconds and displays it as a graph when necessary. Event data is defined by the user-defined event action. The data must be referred to at every user-defined cycle. The data displayed on the screen should be referenced in real time to display the current situation, usually less than 10-20% of the total data. Therefore, when communicating on-demand, a lot of communication performance can be improved. Third, cache-time can be applied. This method is applicable when configured as a server-client in a network system. Data requests from clients continue to occur in real time. Also, when you collect them, duplicate requests can occur. At this time, when a duplicate request occurs within a certain period of time (for example, 300ms) in the server, communication performance is much improved because the number of communication can be reduced if it is returned directly from the memory instead of being read from the PLC every time. Can be. For the request that occurred after the cache time, the existing data is determined to be out of date and read and returned. Fourth, the dynamic optimization technique can be used. This method combines all the features described above. In the first method, for example, you can communicate in blocks so that you can refer to much more data at once. However, if only one bit of data is needed in the block, reading the rest of the data can be a waste of time. Therefore, this dynamic optimization technique uses data within the cache time to divide the data into blocks with the highest data utilization. In the optimized communication state, the local server reads registers in block units to increase the overall data transfer efficiency. Each facility control unit can assign each IP address as an input / output device, which is processed first according to the order of assignment, and the data loaded from each facility to the local server 150 is backed up to a backup module, and is transferred from the Ethernet card to the local server. Linked to the appropriate IP address via LAN networking to allow access. Local server 150 is configured to load all the thousands of points of data by specifying the input and output devices and input and output addresses to operate as an input and output server for each facility, and analyze the data by the integrated operation program and analyzed data The central server 410 is transmitted to the central server 410 or the display client server 420 through the local router 160. The central server 410 collects, records, maintains, calculates, and collects various types of data transmitted from respective facilities that are geographically spaced apart. It performs a function such as conversion, and also transmits a command transmitted from the upper display client 420 to the PLC of each facility. The display client 420 is assigned a unique control right of each facility, It monitors and controls the current operation status and loads the unique data of each equipment recorded, maintained, calculated and converted in the central server 410. The local router 160 may transmit and receive data processed by the local server and data of each facility in parallel.

As described above, the data transmitted from the plurality of regional routers 160 may be transmitted to the central server via the central router 430 using the satellite communication network 200 shown in FIG. 4 or the wired communication network 300 shown in FIG. 5. 410 or to the display server 420. At this time, the data of the water treatment facilities input to a plurality of local servers of the site are linked with the central server via the local router 160, the satellite communication network 200 or the wired communication network 300, the central router 430 in order, The transmitted data is managed by a remote monitoring and control program of the central server computer provided in the central server. In the case of normal integrated operation, system control and main operation are performed at the central server computers 411 and 412, where control of the field area server computer is transferred to the central server or display client server. Accordingly, the data of the local server 150 can be loaded from the IP address of the central server 410 or the display server 420.

The central server 410 collects the data from the local site server in the same manner as the local server, which reads the registered register data. The central server 410 receives the data transmitted from the multiple local servers 150 and visually implements the page and the desired data on the page so that the collected data can be analyzed as the alarm, trend, and report data. Set the function to be recorded and processed. If the data satisfies the corresponding function, it is logged to each of the analytic functions to manage the data.

In addition, the upper network is composed of a central server and a display client server as shown in FIG. Here, the central server 410 designates the register address in the network configuration mode to call the local server from the designated display client server 420 and delegates authority for operation control and data analysis. Accordingly, the display client server 420 delegated authority from the central server 410 can call and load data from the cache of the local server 150, and monitor and control the local server. However, if the display client server 420 determines that there is an abnormality in the presence or absence of data of each water treatment facility collected from a local server 150, the display client server may be a satellite communication network 200 or a wired communication network ( 300) to inform drivers of communication devices such as beeper, mobile phone, and landline, or to control the water treatment facility where an abnormality is detected in real time from a long distance, thereby improving efficiency in controlling, monitoring and managing plant facilities. to provide.

Such display client servers 420 may instead perform data processing until one display client server fails due to a failure until another display client server or a central server recovers the downed display client server. The data processed by the display client server is hot-backed up to the central server 410 once.

In this way, the command, monitoring and control data for the local server of the central server 410 and the display client servers 420 is again the central satellite communication unit 230, satellite 220, local satellite communication unit ( By transmitting to each water treatment facility installed in the field via 210, it is possible to remotely monitor and control the water treatment facilities installed in each power plant or other industrial plant.

By using the remote monitoring and control system of the water treatment plant of the present invention as described above can obtain the following effects.

First, when applied to water treatment facilities installed at each power plant or in other industrial plants, it is possible to effectively integrate, operate and control remote or heterogeneous PLCs.

Secondly, maintenance costs can be greatly reduced by reducing the number of operators on site, thereby improving productivity.

Third, data loss can be prevented by redundant operations such as a central server and a communication network, thereby enabling smooth integrated operation.

Fourth, by configuring the remote monitoring and control system of the present invention into one package, the application target can be easily applied to all package systems of the plant.

Claims (8)

Installed at each power plant in various regions, local communication server monitors remotely and controls heterogeneous or homogeneous pure water treatment facilities, wastewater treatment facilities, multiple desalination facilities, and seawater electrolysis facilities through communication lines, and transmits data transmitted from each facility. A plurality of local plant remote monitoring and control systems for collecting and analyzing and transmitting the data to the central remote monitoring and control system and receiving water treatment facility control data from the central system for remote monitoring and control of the respective facilities; A central remote monitoring and control system for receiving and analyzing data collected and analyzed from each local server and data for controlling facilities of the site in real-time monitoring and control of each local plant remote monitoring and control system; And Remote monitoring and control system of a water treatment plant facility comprising a wireless communication network and a wired communication network for transmitting control data for water treatment facilities in a local plant remote monitoring and control system transmitted between each remote monitoring and control system. . The method of claim 1, The wireless communication network is a remote monitoring and control system of a water treatment plant facility, characterized in that using a satellite communication network or microwave communication network. The method of claim 1, The local plant remote monitoring and control system, A local server including an interface unit for performing data input / output of a water treatment facility in a field; A water treatment facility control unit for controlling each water treatment of the pure water treatment facility, wastewater treatment facility, plural desalination facility, and seawater electrolysis facility while transmitting and receiving remote monitoring and control data of the local server through a communication line and respective interface cards; And Local router connected to the communication line automatically switches to a wireless communication network or a wired communication network for redundant operation when input and output data of the site processed by each water treatment facility from the local server, and determines the connection path of the transmitted and received data Remote monitoring and control system of the water treatment plant, characterized in that consisting of. The method of claim 1, The central remote monitoring and control system, It is responsible for the integrated operation of the multiple regional plant remote monitoring and control systems, and collects, manages and analyzes alarm, trend and report data of all field regional servers, and the results are transferred to the corresponding water treatment facilities through local servers through central routers. A central server for transmitting and delegating remote monitoring control authority to a display client server; Display client servers arranged as many as the number of local servers and assigned the monitoring and control rights from the central server to restore the functions and operations of the local regional servers; And It automatically switches to a wireless communication network or a wired communication network by redundant operation of a plurality of local plant remote monitoring and control system control data input and output from the central server and display client servers connected to the communication line, and determines the connection path of the transmitted and received data. Remote monitoring and control system for a water treatment plant, characterized in that consisting of a central router. The method according to any one of claims 1 to 4, The satellite communication network, between the local router and the central router, A plurality of local satellite communication units connected by wire to a local router to transmit input / output data of a plurality of local plant remote monitoring and control systems; A satellite transmitting data input / output of the local satellite communication units; And a central satellite communication unit configured to wirelessly connect to the central router and transmit input / output data of the central server or the display client server. The method of claim 5, wherein The local satellite communication unit, A local connection for connecting with data transmitted via the local router; A local satellite modem wirelessly connected to the local connection to modulate and demodulate the data; A local satellite transceiver for transmitting data via this modem and receiving data of a higher system via a satellite antenna; A local satellite antenna for transmitting and receiving the data using a parabolic antenna; And And a low noise amplifier coupled between the satellite transceivers to reduce data loss from the local satellite antenna. The method of claim 5, wherein The central satellite communication unit, A central satellite antenna for receiving data wirelessly and transmitting transmission data from the central satellite transceiver to the satellite; A central satellite transceiver for distributing and receiving data of each local satellite communication unit via the antenna and transmitting the data to the antenna; A central low noise amplifier for reducing data loss via the central satellite antenna; A number of demodulators each demodulating the modulated data of the local satellite modem distributed by a central satellite transceiver; A central satellite modem which modulates data from a central server to each regional plant remote monitoring and control system and demodulates data of the site modulated by the local satellite communication unit to the central satellite transceiver; And a central connection unit connected to the demodulator and a central satellite modem to send data to the central router. The method according to any one of claims 1, 3 and 4, The wired communication network, Local terminals connected to a plurality of local routers for inputting and outputting the input and output data for the water treatment equipment in the field and the water treatment equipment control data from the central server or the display client server from the local server; A central terminal connected to the central router and transmitting water treatment facility control data input and output from a central server or a display client server; And Remote monitoring and control system of the water treatment plant facility, characterized in that it is composed of any one of the ISDN, PSTN or dedicated circuit that links the local terminal and the central terminal.