The role of transformers in renewable energy

There are many types of renewable energy, among which solar and wind energy are developing rapidly. Both energy sources share a significant characteristic: they fluctuate according to weather conditions. Due to these characteristics, transformers must meet the following requirements:

1. Higher efficiency: Higher efficiency is required to maximize the use of every kilowatt-hour of power generation.

2. High weather resistance: Solar panels and wind power plants are frequently situated in harsh environments, such as deserts and oceans with high temperatures and high humidity. Consequently, the weather resistance requirements for transformers are high.

3. Strong adaptability: Due to the variability in energy output, transformers must be adaptable to maintain grid stability.

Dry-Type Distribution Transformer

The role of transformers in renewable energy

The role of transformers in renewable energy is primarily evident in critical processes such as transmission, conversion and distribution. They are indispensable equipment to promote the efficient utilization of renewable energy and enhance energy conversion.

1. Power transmission and conversion

‌Boosting and stepping down‌: The electricity generated by renewable energy plants (such as wind and solar power plants) is usually alternating current (AC). This AC must be transmitted to consumers over long distances. High-voltage transformers are essential in this process, as they convert low-voltage alternating current into high-voltage alternating current by increasing the voltage, which reduces energy losses during transmission. Typical transmission voltage levels are 110kV, 220kV or higher. Consequently, high-voltage transformers must possess reliable insulation performance and efficient energy conversion characteristics.

Efficient power transmission: The step-up transformer meets the power demands of various voltage levels through precise voltage conversion, realizes efficient power transmission and distribution, and improves the performance and stability of the entire system.

2. Grid access and stability

‌Voltage regulation and electrical isolation‌: When a renewable energy power generation system is connected to the grid, the grid has strict requirements for the stability of voltage and current. Therefore, the step-up transformer ensures the stability and safety of the grid access through voltage regulation and electrical isolation. Its insulation performance effectively prevents electromagnetic interference from the grid side from being transmitted to the renewable energy equipment side, protects sensitive electronic components within the equipment from interference, and ensures normal operation.

Dry-Type Distribution Transformer

‌Ensure grid safety‌: When there is a device failure or grounding problem, the insulation function of the step-up transformer can prevent current from leaking into the grid, thereby ensuring the safe and stable operation of the grid.

3. Improve energy efficiency

Reduce line losses: By increasing the voltage of low-voltage electricity and connecting it to the grid, the step-up transformer can more efficiently transmit it to the medium-voltage or high-voltage grid, thereby reducing line losses and enhancing the quantity and efficiency of renewable energy generation.

‌Intelligence and technological innovation‌: With the advancement of intelligent technology, step-up transformers are now integrated with intelligent technology to achieve more efficient and safer operations. For instance, built-in sensors can monitor the temperature, voltage, current, and other parameters of the transformer in real time, automatically adjusting its operating status to enhance overall energy efficiency.