NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
It is generally believed that the emergence of wear aging and external factors caused by daily time, which affects the use of cables. Both will lead to fault trip, interrupt power operation, which will cause grids when it is serious. In these factors, it is generally considered that the emergence of wear aging and external factors caused by daily time, which affects the use of cables.
Both will lead to fault trip, interrupt power operation, which will cause grids when it is serious. In these factors, the time accumulation factors can be controlled, causing a minimum of faults, and the external environmental meteorological factors are uncontrollable, causing extremely high fail-critical and large destructive power. The following power cable path instrument manufacturers have made a summary.
First, lightning power cable path instrument considers that lightning weather is generally existed in the rainy season, randomly. A large amount of power transmission line set in the wild, with a large number of tower spacings, high degree of high phase, making the line Nile levels relatively poor, and it is easy to suffer. In the harsh ground, there are many single-return lines, and there is no shielded and shunt protection provided by parallel lines, which increases the incidence of lightning accidents.
Lightning strips are the largest in power transmission line failures, the lower the voltage level, the higher the probability of lightning strikes. In order to reduce the chances of transmission lines, the chances of lightning accidents should be anti-flashing, anti-construction arc, anti-straight hit, and power supply. Use the following protection measures: 1, set up the lightning line.
2, add a coupling ground. 3. Reduce the ground resistance of the tower impact. 4, adopt neutral point non-direct grounding system.
5, strengthen the level of insulation. 6, install automatic recruitment. 7, mount tube arrester.
Second, the typhoon typhoon weather is accompanied by wind rinsing phenomena, and the transmission line will occur, the wind is shouted, broken, broken, and inverted tower. Disconnect, the tower is easy to appear in the North and South to solve the network. As the power system is designed to increase the wind speed value of the transmission line, the chances of disconnecting the tower accident, but the wire is dramatic, the wind is charged, and the outer gas is damaged. High rate. For vibration lines with low wind speed, most of the lines are installed in the air-resonant device to control. When a strong wind is encountered, the following measures can be used: 1. Increase the anti-vibration hammer, add heavy hammer, to increase the vertical load of the transmission line. Carrying capacity, reducing the width of the line left.
2, install the damping line, protect the line, increase the split root, reinforce the wire, to ensure the wires between the wires, and the safety distance between the tower. 3. The suspension method of V-type insulator string is used, and the insulator resistance to the wind and transverse drift is enhanced. 4. When designing the tower, set up a power transmission line, consider having a large distance, down, or extended, and widened.
Third, the mountain fire is affected by high temperature and human factors, so that the air has a high temperature, low humidity, located in the mountain area, across the forest vegetation transmission line and the earth or the phase line, Due to the increase in the heat exchange of air particles, the charge charge is increased, the particle movement speed is accelerated, and the main cause of the line flash drive is formed, and 90 %% UFF0C, which is the mountain fire trip, the main cause, including high temperature burning Line insulation, wire to discharge of tower. In response to the phenomenon of the mountain, it is necessary to reduce the incidence of hills from the prevention measures of fire: 1. Control about the trees, quantity, and species of the trees near the tower. 2. Establish emergency response measures, there is a safe passage sufficiently length and width.
3, the line protection system is reliable and sensitive. 4, establish real-time monitoring system, improve monitoring effect; 5 seasons, minute sections, minute weather conditions, increase line inspection, eliminate hidden dangers. The above is the dry goods sharing brought by the power cable path manufacturers, hoping to bring some help to people need.
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