Thunderstorm weather, outdoor alpine diesel generator set lightning protection measures

Determining the lightning protection method of the generator should mainly depending on the size of the generator capacity, the strength of the local lightning activity and the reliability of power supply. Theoretical and practice proves that the generator connected to the overhead power line is re-protected by the transformer, as long as it is reliably protected the transformer, it is generally not necessary to take lightning protection measures to the generator, in the multi-light line Important generators, in order to prevent lightning waves on the high voltage side of the transformer pass through the transformer to endanger the insulation of the generator, it is advisable to mount a group of magnetic blankets on the output of the generator.

The generator directly connected to the overhead distribution line must perform lightning protection protection, according to the national standard design specifications, different lightning protection measures are taken on different situations.

Protecting the lightning arrester for high-pressure rotating electric machines, generally use magnetry-axis lightning, and the arrester should be installed near the generator. Under normal circumstances, the arrester can be installed out of the electric machine; if the generator on each group of generators does not exceed two, or the single capacity is not more than 500 kW, and when the distance from the arrester does not exceed 50m, the arrester can also be mounted. On each group of busbars, when the neutral dot can be taken out and not directly grounded, the magnetic blow or ordinary valve arrester should be installed on the neutral point.

Outdoor use generator equipment must pay attention to lightning protection to ensure personal safety.

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