Industrial RTU Common Application Environment Introduction
RTU
RTU English full name Remote Terminal Units, Chinese called the remote terminal unit.
RTU has the following features:
1, the communication distance is longer
2, for a variety of harsh industrial environments
3, modular structure design, easy to expand
4. It is widely used in industries such as water conservancy, electric power dispatching, and municipal dispatching in the fields of remote messaging, telemetry, and remote control.
Detailed introduction
RTU (Remote Terminal Unit) is a remote measurement and control unit device that is responsible for the monitoring and control of on-site signals and industrial equipment. Compared with the commonly used programmable controller PLC, RTU usually has excellent communication capabilities and greater storage capacity, suitable for more harsh temperature and humidity environment, providing more computing power. It is the perfect function of RTU that makes RTU products have a lot of applications in SCADA system.
Remote Terminal Equipment (RTU) is an electronic device installed at a remote site to monitor and measure sensors and equipment installed at a remote site. The RTU converts the measured state or signal into a data format that can be transmitted over the communications media. It will also convert the data sent from the central computer into commands to achieve functional control of the device.
Surveillance control and data acquisition are a broader term applied to systems that can centrally control and monitor equipment installed at remote sites. The SCADA system can be designed to meet a variety of applications (water, electricity, gas, alarms, communications, security, etc.) and meet customer requirements for design specifications and operational concepts. The SCADA system can be as simple as a switch connected to the far end via a pair of wires, or it can be complicated to a computer network. It consists of many wireless remote terminal devices (RTUs) and communicates with powerful microcomputers installed in the central control room. . The remote terminal equipment of the SCADA system can be implemented with a variety of different hardware and software. This depends on the nature of the charged site, the complexity of the system, the requirements for data communications, real-time alarm reporting, analog signal measurement accuracy, status monitoring, device control and switch control.
Substation is an important part of the power system. Its safe and reliable operation is the fundamental guarantee for the safe and economic operation of the power grid. At present, substations are developing in the direction of integrated automation with itemized automation. The immediate goal of comprehensive automation is to integrate protection, measurement, monitoring, and telecontrol of substations, achieve data sharing, share resources, and greatly increase automation efficiency.
In the power system, for better management, grid dispatching automation is often implemented. Although provincial, county, and county dispatchers have different functions and responsibilities, their composition is basically the same, and is generally determined by the master station and the remote terminal (RTU). )composition. A telecontrol terminal is a telecontrol device installed in a power plant or substation in a power grid monitoring and control system. It is responsible for collecting the analog and state quantities of the power running state of the power plant or substation, and monitoring and transmitting these analog quantities to the dispatch center. And state quantities, execute control and scheduling commands sent to the power plant or substation at the dispatch center. However, with the development of modern management of coal mines, the implementation of coal mine safety production monitoring and dispatching system has been recognized by the public. The system can monitor the production environment safety of coal mines and the important electromechanical equipment of mines in real time through the main computer installed in the mine control room. The working conditions, thus controlling and regulating the production processes, integrate the production of command, management and control, and become an important part of mine production.
Because the coal mine control room is far away from the mining site, multiple substations need to be set up and down the mine. Undoubtedly, the coal mine substation is the core and power source for enterprise production. It is related to safe production and human safety. Substation safety management is also an important part of the coal mine monitoring system. Normally substations and coal mine production dispatch centers are often far apart. Far-range technology must be used. RTUs are set at the substations and are connected to the dispatch center computer through the channel. The RTU and the dispatch center complete the RTU through long-distance information transmission. Remote monitoring function.
The RTU can cooperate with the master station to implement three remote functions: telemetry, remote signaling, and remote control.
Powerful features
1. Support virtual data private network (APN/VPDN).
2. Support dual data center backups and multiple data centers (8) to accept data, with a maximum of 256 sending centers.
3. Smart anti-drop, support for online detection, online maintenance, dropped automatic redial, to ensure that the device is always online.
4. Remote wake-up: support for wake-up mode of SMS, voice, data, etc. and timeout to disconnect the network.
5. Support fixed IP communication; support DDNS dynamic domain name communication.
6. Support 6 channel counter input.
7. Support 8 switch inputs.
8. Supports 8 analog inputs.
9. Supports 4 digital outputs.
10. Supports 2 PWM outputs. .
11. Supports 4 relay outputs.
12. Supports 1 serial RS232 communication.
13. Supports 1 way RS485 communication.
14. Supports 1 Ethernet.
15. Support extended wireless RTU management platform protocol.
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