Electrical Control: DTU Distribution Station Automation Terminal DTU
DTU Intelligent Distribution Terminal Product Overview
1. Collect measurement values every 20ms, providing real-time telemetry data with thresholds and time-stamped telemetry data for dispatch reading.
2. The terminal has 1 cascaded RS485 communication interface.
3. The resolution of switch quantities is not greater than 2ms.
4. The distribution terminal DTU is used for collecting and regulating the operating data of distribution equipment.
5. AC sampling: Collect three-phase AC voltage and current of multiple lines, and measure voltage, current, active power, reactive power, power factor, and frequency.
6. Can withstand the level IV radiated electromagnetic field interference test specified in GB/T14598.9-2002.
7. Curve data storage: Store data such as voltage, current, active power, and power factor.
8. Software debounce time is adjustable from 6 to 60000 milliseconds.
9. Remote signaling: Collect and transmit status information to remote locations, with priority transmission for status changes.
DTU Intelligent Distribution Terminal Functional Features
1. Each plug-in uses a 32-bit MCU, and the plug-ins are internally connected via a CAN network. The system has advanced performance and high integration, reducing peripheral circuits and improving reliability, ensuring functional reliability while meeting the real-time requirements of network communication and interface.
2. Measurement accuracy: Voltage and current sampling accuracy: 0.5 level.
3. The fault current input range is not less than 20 times the rated current.
4. Abundant communication interfaces: The device contains up to four serial ports (RS485 or RS232 optional) to meet communication requirements in different scenarios.
5. The device is integrally embedded and installed using front-plug and front-wiring methods.
6. Pulse magnetic field interference: Meets GB/T 17626.9-1998, level 5. Magnetic field strength: 1000A/m.
7. Terminal operation fault detection.
8. The DTU functional module monitors in real time the operating and fault information of 10kV line voltage, line current, zero-sequence current, equipment status, etc.
9. Has the function of communicating with two or more master stations.
DTU Intelligent Distribution Terminal Working Principle
1. Can measure voltage, current, active power, reactive power, power factor, frequency, or harmonic values of multiple lines, collect DC quantities, and transmit them to the upper-level device.
2. The DTU distribution terminal supports protocols such as TCP, UDP, PPP, ICMP, DNS, and FTP.
3. Can perform parameter settings locally and remotely.
4. The switching station DTU has remote maintenance functions, allowing users to easily and conveniently set various parameters, greatly reducing on-site maintenance workload.
5. Realize remote battery activation and battery charging/discharging.
6. RS232 interface: Electrically isolated, supports communication rate of at least 9600.
7. The DTU distribution terminal enables the upper-level master station system to monitor the distribution network operation at any time and make correct decisions.
8. Locally stores 24-hour real-time curves with a time interval of 1 minute, supporting dispatch and local reading in file format.
9. Real-time data acquisition and monitoring in railway power and electrification systems.
