This article focuses on transformer selection for solar power plants. Building on a previous general comparison of oil-immersed and dry-type transformers, it examines the specific requirements of photovoltaic applications. The article outlines product solutions for different scenarios—large ground-mounted plants, commercial rooftops, and building-integrated photovoltaics—covering oil-immersed transformers, dry-type transformers, specialized box-type transformers for renewable energy, box-type substations, and high/low voltage switchgear. It then analyzes key technical factors unique to solar projects, including harmonic mitigation, voltage fluctuation and bidirectional power flow, insulation coordination, outdoor environmental endurance, and total cost of ownership over a 20-plus-year operating cycle. Drawing on Dada Electric's manufacturing experience, this guide offers project developers and engineers a practical, application-focused selection reference.
Choosing the right transformer is a critical techno-economic decision for any power project. This article provides a detailed comparison between oil-immersed and dry-type transformers, focusing on safety, installation environment, maintenance, reliability, and total life-cycle cost. By walking through four key questions—installation location, fire safety level, available maintenance resources, and full cost of ownership—project decision-makers can confidently select the optimal technology. With complete manufacturing lines for both transformer types, Dada Electric offers unbiased, application-driven guidance to help you match equipment to real-world conditions, never pushing a product that does not fit.
From 10–12 September 2025, Lanyao Energy will exhibit its latest lightweight flexible modules and 50 kWh storage cabinet at Booth 7B15, Hall 7, CIOE Shenzhen. Technical talks and project matching will be open to all visitors.
