What is the basic concept of overvoltage?

In the operation of various electrical equipment in power systems, besides withstanding normal system voltages, they also encounter various types of overvoltages. Overvoltages are generally classified into two categories based on their sources: external overvoltages and internal overvoltages.

External overvoltages typically refer to lightning-induced overvoltages.

Internal overvoltages refer to voltage increases caused by changes in system parameters due to circuit breaker operations, system faults, or other reasons, leading to the conversion or transfer of electromagnetic energy within the power grid.

LuShan, est. 1975, is a Chinese professional manufacturer specializing in power transformers and reactors for 49 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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