Overhead line fault prevention measures

1. Make the calculation of short circuit current, correct selection, and verification of electrical equipment, electrical equipment rated voltage, and rated line voltage.

2. The correct choice of protection setting value and melt rated current, using a fast-break protection device, so that when a short circuit can be quickly cut off the short-circuit current, reducing the duration of the short-circuit current, reduce the losses caused by a short circuit.

3. Install a lightning rod in the substation, and install lightning in the vicinity and the line transformer, to reduce lightning damage.

4. Increase the use of the reactor system impedance, and short-circuit current limit.

5. The fault lines or equipment removed from the power system, so that the rest can continue to run.

6. The forbidden band negative Hela knife, grounding switch live together. After the line construction should be finished immediately remove ground wire. Always on the line, equipment inspection checks to detect defects quickly overhaul.

7. To ensure the quality of construction of overhead cable lines, strengthen line maintenance, and always maintain a consistent line sag along with co-prescribed.

8. Live electrical equipment installation and maintenance, to prevent mis-wiring, misuse, short distance away from the live parts of the site work, to take measures to prevent short circuits.

9. To strengthen management, prevent small animals from entering the distribution chamber, and climbing electrical equipment. The timely removal of conductive dust, preventing the conductive dust into electrical equipment.