High-voltage and high-power double-tuning electric deicing method for overhead transmission lines
An overhead transmission line, high-power technology, applied in overhead installation, electric heating devices, electrical components, etc., can solve the problems of low ice melting efficiency, difficult to popularize in a large area, and long ice melting time, so as to maximize the utilization rate of device capacity, The effect of wide application range and high ice melting efficiency
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[0036] Option 1: Single-phase line deicing. Such as Figure 4 As shown, the neutral point of the de-icing power supply is grounded and the other end of the line is also grounded at the same time, and the resonant capacitor and parallel LC circuit are connected in series in the middle of the single-phase line, so that the de-icing power supply, the ice-coated line, and the ground form a loop. When deicing is powered on, the deicing power supply controls the output through the double resonance algorithm, so that the equivalent circuit of the deicing heating circuit that can be double tuned is as follows: image 3 As shown, high-efficiency electric heating transmission lines can quickly melt ice. This mode of operation is particularly suitable for the deicing of ground wires of transmission lines or catenaries of electrified railways.
[0037] Option 2: Three-phase lines are deiced at the same time. Considering that the line is a three-phase symmetrical load, one end of the th...
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