Use of frequency changers for interconnection of power systems

FOLLOWING an extensive study into the cost of power as delivered to the customer, the Brooklyn Edison Company adopted the policy of supplying all the increase in business at 60-cycle alternating-current and curtailing the direct-current load within the capacity of the existing substations. With the 25-cycle generation confined primarily to the supply of power to the direct-current system all new prime movers are being installed with 60-cycle generators. The 25-cycle system is therefore left in a position of barely holding its own.