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New energy, primarily wind and solar power, is reshaping the landscape of global power systems. Compared with traditional fossil fuels, new energy features renewable resources, zero-carbon operation, and wide distribution.

Power transformers are fundamental equipment in AC power systems for voltage conversion, energy transfer, and electrical isolation. Through electromagnetic induction, a transformer converts electrical energy from one voltage level to another at the same frequency, meeting requirements for generation step-up, long-distance transmission, regional distribution, and end-user utilization.

Medium-voltage switchgear plays an indispensable role in modern power infrastructure. Serving as the control node between power generation, transmission, and end-user consumption, this equipment is responsible for closing and opening normal load currents while automatically interrupting fault currents under short-circuit conditions, thereby protecting connected transformers, lines, and generators.