A method for controlled energising of a transformer

In aspects, the present invention provides a method for controlled energizing of a transformer (150) being connected to a first electrical subsystem (110) through a first circuit breaker (140). The method comprises acquiring electrical current waveform in a first phase of the transformer during a closing operation of the first circuit breaker at an instance for switching determined by a controller (130), determining a first peak (310) in the current in the first phase within a first predetermined time window (Tpw), calculating a first correction factor for adjusting the instance for switching in the first phase, and adjusting the instance for switching based on the calculated first correction factor for performing a next controlled energization at the adjusted instance of switching in the first phase. 在方面中，本发明提供用于变换器（150）的受控制的通电的方法，该变换器（150）通过第电路断路器（140）而连接至第电气子系统（110）。方法包含：在由控制器（130）确定的切换实例，在第电路断路器的闭合操作期间采集变换器的第相中的电流波形；在第个预定的时间窗（Tpw）内确定第相中的电流的第峰（310）；计算第校正系数以用于调整第相中的切换实例；以及基于所计算的第校正系数而调整切换实例，以用于在用于第相中的所调整切换实