In the stable operation of the power system, fault monitoring and rapid processing of transmission lines are crucial. Transmission line operation often encounters lightning, ice, strong winds and other complex conditions, which can easily lead to transient faults such as flashover and other line faults, how to accurately locate the fault point and quickly identify the type of fault, which has become a key issue to improve the reliability of the power grid. The distributed fault monitoring device for transmission lines independently developed by Dinstar Intelligent Technology has built a solid line of defense for the safety of the power grid with its innovative non-contact solution.
Installation position: mounted on the pole tower, no contact with the high-voltage conductor, wider scope of application;
Power supply: dual solar + storage battery power supply, can run continuously for more than 30 days under rainy weather;
Technical features: breaks through the limitations of contact devices while maintaining high accuracy fault location and identification;
Adaptability: applicable to all voltage levels of AC and DC air transmission lines, not subject to the limitations of the load current of the conductor.
The monitoring device is connected to the data center in real time via a dedicated 4G/5G/power APN network to form a complete monitoring system. The data center station provides an intuitive visualization interface, including:
Real-time monitoring: visual display of line operation status and alarm information
Troubleshooting: Expert library supports automatic fault analysis and localization
Historical data: support historical data query, comparison and trend analysis
High-precision clock synchronization: Adopt BeiDou (BDS) for high-precision clock synchronization, the synchronization error can reach ns level.
1. Precise positioning capability
The fault point positioning error is controlled within ≤300 meters, which significantly improves the efficiency of fault handling;
The positioning technique is suitable for complex terrain with large tower spans and meets the needs of all types of transmission lines.
2、Intelligent identification and alarm
Lightning strike/non-lightning strike fault waveforms can be identified, and lightning strike waveforms can be further analyzed to identify lightning bypass and counterstrike;
The device can be instantly alerted via SMS or WEB after a fault occurs, notifying the operation and maintenance personnel at the first time.
3. Data storage and analysis
The master station can store the historical fault data within 5 years, which provides sufficient basis for operation and maintenance decision-making;
The system supports data mining and in-depth analysis to enhance fault warning capability.
4、High reliability index
Lightning fault identification accuracy ≥95%, warning accuracy ≥80%;
Fault alarm delay time ≤5min, diagnostic results output time ≤30min;
Protection level up to IP66, adapt to all kinds of harsh environments.
