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Precise fault location and early warning device for high-voltage cable (hybrid) lines
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Key words:
The operating environment of power cables includes a variety of complex occasions, including direct burial, pipe penetration and cable trenches, which are particularly difficult for operation and maintenance personnel to access. Once a power cable breakdown occurs at these locations, the point of failure cannot be quickly identified.
The high-voltage cable (hybrid) line fault precise location and early warning device monitors the cable waveform in real time, and collects the high-frequency traveling wave signal excited when the cable fault occurs through high-frequency sensors installed at both ends of the cable. Through high-speed sampling and wavelet transformation, high-precision GPS and Beidou timing are added to completely present the timing and morphological information of the fault waveform. Artificial intelligence algorithm is used in the background to achieve the purpose of fast recording and accurate automatic location of the fault.
Product features:
The product has the combined fault detection of non-contact voltage traveling wave sensor and current traveling wave sensor, supports double-ended positioning and single-ended fast positioning mode, and the positioning accuracy is ≤ 0.1 L +5m; Optimized combination of voltage and current sensors completes the acquisition of various transient waves in the cable system; GPS and Beidou accurate timing systems ensure timing accuracy ≤ 20ns; Based on a large amount of cable wave data, the AI deep learning algorithm is used to provide accurate positioning, the fingerprint database of various working conditions of the cable is used, and the AI algorithm is combined to improve the accuracy of fault warning, and the AC220V, solar energy, induction power supply and other schemes are adapted to various working conditions.
| Technical indicators: Detection head rising edge: ≤ 100ns Sampling frequency: ≥ 20MHz Working temperature:-40~50 ℃ Protection grade: box IP67, sensor IP68 Communication mode: 4G Sensor: non-contact; can be installed with electricity Local storage: ≥ 100 fault records, no loss after power failure Shell material: SUS304 stainless steel |
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