I. Demand analysis
Distribution lines stretching across the field, the operating environment is complex, often subject to lightning, fire, trees and other external forces and failures, and lead to user blackouts, affecting production and life, to the power grid to bring direct power sales losses. Therefore, before the occurrence of faults warning defects, faults occur after the rapid search and exclusion of the power grid operation is particularly important.
II. Principle of operation
The distribution network traveling wave fault early warning and location system is based on mature traveling wave ranging technology, combining intelligent sensors, mixed supply and energy extraction, deep learning algorithms and other advanced technologies, wide-area simultaneous collection of high-frequency traveling wave current and industrial frequency current of distribution lines, and it can monitor the grounding hazards of the lines without omission, give early warning, and realize the fault of the tower level precise location. To achieve the purpose of strengthening line defects and hidden troubleshooting, improving the accurate positioning and rapid processing of single line grounding faults in distribution networks, and providing technical support for lean operation and maintenance of distribution networks.
Functional features
(1) Perfectly solving grounding faults
(2) Early warning of hidden danger;
(3) Precise location;
(4) Grounding line selection.
III. Functional characteristics
serial number | functionality | Technical Parameters |
1 | Fault location accuracy | ≤ ±200m |
2 | Fault pinpointing accuracy | ≥ 90% |
3 | Fault interval localization reliability | ≥ 99% |
4 | Accuracy of grounding hazard monitoring | ≥ 90% |
5 | Accuracy of lightning strike fault identification | ≥ 90% |
6 | Grounding and routing accuracy | ≥ 90% |
7 | Insulation hazard monitoring accuracy | ≥ 90% |
8 | starting current | ≥ 3A |
