With the acceleration of the global green energy transition, both high efficiency, environmental protection, safety features of the green transformer, is becoming the core equipment of new energy projects, energy storage, offshore wind power, nuclear power, photovoltaic and other fields to achieve large-scale application, low-carbon energy transition to provide key support.
Energy storage power station charging and discharging dual operating conditions, the transformer puts forward anti-over-excitation, low loss, high safety requirements. Green transformer optimized design: magnetic density is lower than 1.5 Tesla, avoiding overexcitation under discharge condition; adopting super first-class energy efficiency scheme, reducing load loss during full-load operation, and maximizing the saving of energy storage power; choosing encapsulated/closed structure, adapting to the high-temperature, dusty and humid environment in the containers, and meeting the fire safety requirements of the energy storage station close to the load center, so as to provide the project with a green and low-carbon electric power. Solution.
Offshore wind power projects require high reliability, environmental protection and miniaturization of transformers. The 66kV/14MW offshore wind power tower transformer independently developed by Jinma Electric adopts natural ester vegetable oil insulation material, which has the advantages of high ignition point, biodegradable and renewable, compact size and outstanding energy efficiency, realizing the breakthrough of localization of vegetable oil transformer for offshore wind power tower. Industry research shows that the liquid-immersed transformer with improved insulation materials, compared with dry-type transformer cost is lower, higher efficiency, initial investment and operation and maintenance cost advantage is significant, is the preferred option for offshore wind power projects.
Nuclear power plants have the world’s highest level of safety and stability requirements for power supply equipment. Daya Bay nuclear power plant, Ling Ao nuclear power plant and other projects, are used in three-dimensional coil core energy-saving transformer power supply program, long-term stable operation of the green transformer verified the high reliability, but also marks the safety performance of its nuclear power level application standards, for the subsequent nuclear power projects to lay the foundation for large-scale promotion.
More than 10MW photovoltaic power station commonly used liquid-immersed transformer, natural ester (vegetable oil) transformer compared with the traditional mineral oil transformer has significant advantages: higher heat-resistant grade, can withstand a higher temperature rise in overload conditions, support the selection of smaller capacity equipment, reduce project costs; environmental friendliness is outstanding, the degradation rate of nearly 100%, non-toxic, harmless, the whole life cycle of the carbon emissions of mineral oil transformer is only 1/64; At the same time with excellent fire performance, suitable for photovoltaic power station outdoor, decentralized application scenarios. At present, vegetable oil transformer has been applied in many grid-connected photovoltaic projects, becoming the mainstream choice of the industry.
Green transformer with high efficiency and energy saving, environmental protection and safety, strong adaptability of the core advantages, and the development of new energy projects highly compatible with the needs of the industry has been widely recognized by owners. With the technology iteration and environmental protection requirements, its application in the field of new energy will continue to expand the scene, become a key force to promote the green transformation of energy.
