Key Link Between Power Generation and Grid
A Generator Transformer plays a critical role in modern power generation and transmission systems. It acts as the vital connection between the generator and the transmission network, ensuring electricity is delivered efficiently over long distances with minimal losses. In power plants whether thermal, hydro, or nuclear electricity is produced at relatively low voltages, typically between 11 kV and 33 kV. Transmitting power at such low voltage would result in high current and significant energy losses. This is where the generator transformer becomes indispensable. How a Generator Transformer Works The primary function of a generator transformer is to step up the voltage generated by the alternator to a much higher transmission level, often 132 kV, 220 kV, or even 400 kV. By increasing the voltage, the current decreases, which drastically reduces I²R losses in transmission lines. This improves overall system efficiency and reduces operational costs. Generator transformers are usua...