The railway power system consists of substations along the railway line, 10kV interconnected power lines, low-voltage distribution systems, and supporting power facilities, which are responsible for the railway line
The power supply tasks for primary loads such as line signal power supply, communication power supply, and secondary and tertiary loads such as power and lighting.
Intelligent RTUs are usually installed in railway substations, stations, and box transformers to monitor the power supply of important circuits and achieve data collection from the dispatching end to the controlled end
A railway power remote control terminal that integrates, monitors, and controls. Intelligent RTUs have distributed RTUs for remote signaling, telemetry, remote control, fault recording, and parameter analysis
In addition to basic functions such as data tuning, it can also achieve four in one (intelligent distribution, energy efficiency management, electrical safety, power quality) and obtain circuit breakers
Waiting for communication data from intelligent devices is an intelligent front-end device for achieving integrated management of intelligent power distribution.
Compliant with the Provisional Technical Conditions for Railway Power Remote Terminal Unit (RTU) issued by China Railway Transport Corporation (2015) No. 90

application system

intelligenceCharacteristics and advantages of RTU

1. Independent collection and control, easier installation and wiring;

2. Each circuit device does not interfere with each other, and maintenance and debugging are simple;

3. Large screen LCD display, good human-computer interaction;

4. Strong system scalability and low cost of adding remote control circuits;08 Intelligent acquisition of communication data from circuit breakers or other devices, with strong flexibility;

5. Energy metering function, easy to achieve electricity assessment and energy management;

6. Monitoring leakage current and temperature makes electrical safety hazards invisible;

7. Large capacity data storage for easy fault tracing and analysis;

intelligenceThe functional characteristics of RTU:

Telemetry function:

Comprehensive full power measurement, such as phase voltage, line voltage, current, frequency, active power, reactive power, in power, power factor, etc., adopts the working mode of telemetry over threshold transmission to the main station (real-time curve), and the telemetry threshold can be set;

remoteletterfunction：

Remote signal sampling to remove jitter; Remote control output holding time; Telemetry change threshold; Telemetry alarm value and time limit; Fault diagnosis parameters, fault recording input and startup conditions; Electricity consumption base; Remote and local maintenance can be carried out, and operational data, various records, and system configurations can be viewed remotely or locally;

Remote control function:

Receive, return to school, and execute remote control commands. The output hold time can be set, and each remote control object can be set as a single step reset object;

Energy metering function:

Active and reactive bidirectional electrical energy, four quadrant electrical energy, multi rate electrical energy, supporting electrical energy pulse output;

Power quality analysis:

Zero sequence voltage, zero sequence current, load properties, voltage/Analysis of 2-31st harmonic content in current and voltage/current imbalance;

Intelligent communication function:

Intelligent acquisition of communication data from circuit breakers or other devices;

Self start function:

Each circuit of the device is equipped with a watchdog, which has a self starting function in case of power on or other abnormal situations;

Data recording function:

Remote signaling displacement record;

Remote telemetry exceeding limit record;

Fault diagnosis record;

Communication anomaly record;

Each circuit has a disconnection and continuation function, which can be saved locally in case of communication interruptionSOE、

Telemetry curves and waveform data, and automatic upload after communication is restored;

Over limit alarm:

Each circuit provides two-stage overcurrent, two-stage overvoltage, undervoltage, and undervoltage functions (with higher accuracy in response to actions)2%, the inherent response time should be less than 20ms), the alarm setting value and time limit can be adjusted, and telemetry exceeding the threshold can be processed and sent up;

Fault recording function：

Support fault recording for each telemetry acquisition channel, starting conditions: overcurrent, trip fault;

Setting function:

Remote signal sampling to remove jitter; Remote control output holding time; Telemetry change threshold; Telemetry alarm value and time limit; Fault diagnosis parameters; Fault recording input and start-up conditions; Electricity consumption base; Remote and local maintenance can be carried out, and various operational data, records, and system configurations can be viewed remotely or locally;

Electrical safety hazard monitoring:

By collecting data on circuit leakage current and temperature, identify potential safety hazards in electrical fires;

High precision clock:

Internal clock chip, precise toMS level;

Self diagnostic function:

Power on communication function self-test, setting value self-test, clock self-test, memory self-test, system database validity check.

performance parameter

External dimensions

Product Selection