Foreign objects such as kites and plastic bags hanging on power lines do not always immediately cause line failures, but they pose extremely high safety risks that must never be overlooked. Plastic materials have excellent insulating properties when dry; if merely wrapped around a single bare conductor, they generally won't trigger sudden faults like tripping or short circuits in the short term. However, this apparent stability is only temporary—safety hazards remain latent throughout.
When exposed to rain, dust, or fog, moisture and dirt accumulate on the surface of plastic bags, significantly reducing their insulation capability and creating conductive pathways. If a plastic bag spans two wires of different phases—whether between live wires, or between a live wire and neutral or ground wire—it can instantly trigger a short circuit. In low-voltage lines, a short circuit causes immediate tripping for protection, while the high current quickly melts the conductors. Burning plastic may directly ignite nearby flammable materials. For high-voltage lines, the consequences are even more severe: massive short-circuit currents can directly sever cables and puncture insulators, causing widespread power outages. The intense heat from electrical arcs easily ignites vegetation along roadsides, potentially triggering forest fires.
Beyond equipment damage and fire outbreaks, manually removing foreign objects from power lines poses serious life-threatening risks. Ordinary individuals attempting to remove kites or plastic bags dangling beneath high-voltage lines risk electric shock from induced voltage, arc burns, or stepping into hazardous step voltages. Each year, numerous real-life incidents occur nationwide where people suffer electrocution injuries or fatalities while illegally removing debris from power lines.
To address the industry's critical challenges—high risk and low efficiency in manual removal of line obstructions—HaiZhuo Technology has developed a remote laser obstacle-clearing device. This system eliminates the need for personnel to approach live lines closely. Leveraging long-range operation capabilities, it precisely removes various suspended objects—including kites and plastic bags—within a 300-meter range using laser technology. By eliminating the need for climbing poles or close-range operations, it effectively avoids the risk of electric shock, offering a safe and efficient solution to the problem of foreign object entanglement on power lines, safeguarding both grid stability and worker safety.
