1, make a calculation of the short-circuit current, correctly select and verify the electrical equipment, so that the rated voltage of the electrical equipment and the rated voltage of the line are consistent.
2 the correct setting of relay protection and the rated current of the melt are selected. The quick-break protection device is adopted to quickly cut off the short-circuit current when the short-circuit occurs, reduce the duration of the short-circuit current, and reduce the loss caused by the short-circuit.
3 install lightning rods in substations, install lightning arresters near transformers and lines to reduce lightning damage.
4, the reactor is used to increase the system impedance and limit the short-circuit current.
5. Remove the faulty line or equipment from the power system so that the rest can continue to operate.
6. It is forbidden to bring the load broach gate and the grounding knife gate with electricity. The ground wire should be removed immediately after the line is completed. It is necessary to inspect the lines and equipment frequently, find defects in time, and quickly carry out maintenance.
7, to ensure the construction quality of overhead cable lines, strengthen line maintenance, and always maintain the line sag consistent and attached regulations.
8. When installing and repairing electrical equipment with electricity, it is necessary to prevent misconnection and misoperation, and work in a location close to the live part, and take measures to prevent short circuit.