Digital substation-roadmap for practical implementation

Helen Electricity Network Ltd. (Helen) is a Distribution System Operator (DSO) serving over 430,000 customers in Helsinki. It is one of the leaders in Finland’s energy transition from fossil fuels to renewables. Wind power now located in the West coast of the country dominates generation, while demand is concentrated in Helsinki region. Replacing district heat from closed coal plants requires large electric boilers and heat pumps connected to Helen’s High