I. Requirements Analysis

Power distribution lines stretch across remote areas, operating in complex environments where they frequently suffer failures due to external forces such as lightning strikes, wildfires, and falling trees. These failures cause power outages for users, disrupting production and daily life while resulting in direct revenue losses for the power grid. Therefore, early warning of potential defects before failures occur and rapid identification and resolution of faults after they happen are crucial for grid operation.

II. Working Principle

The Distribution Network Traveling Wave Fault Early Warning and Location System integrates advanced technologies including intelligent sensors, hybrid power harvesting, and deep learning algorithms based on mature traveling wave distance measurement technology. It synchronously collects high-frequency traveling wave currents and power frequency currents across distribution lines over a wide area, enabling comprehensive monitoring of potential ground faults without omission. This facilitates early warning and achieves fault location at the pole level. This system enhances the detection of line defects and hazards, improves the accuracy and speed of locating single-line ground faults in distribution networks, and provides technical support for lean operation and maintenance of distribution networks.

III. Features and Functions

1. Perfectly resolves ground faults;

2. Hidden Hazard Early Warning;

3. Positioning;

4. Ground Fault Line Selection;

5. Built-in wireless communication module supports GPRS wireless communication for remote transmission of motion signals.

6. Continuously monitors voltage deviation, frequency deviation, harmonics, voltage fluctuations and flicker, three-phase imbalance, and other parameters; provides alarm indications for ground faults, short circuits, low voltage, and severe overloads.

7. Equipped with intelligent power quality monitoring, low voltage monitoring and mitigation, as well as line overload and overcurrent monitoring and mitigation, ensuring the safe and stable operation of the distribution network power system;

8. Features distributed low-current ground fault selection monitoring, capable of identifying short circuits and ground faults, and distinguishing between selective faults and transient faults;

9. The backend software features data storage and historical data query capabilities, enabling fault location through trend analysis and wavelet transform analysis.

IV. Technical Specifications