The planning, design and operation of power systems require load flow computations to analyze the steady – state performance of the power system under various operating conditions and to study the effects of changes in equipment configuration. These load flow studies can be performed using computer programs designed specifically for this purpose. The starting point of a load flow problem is a single line diagram of the power system, from which input data for computer solutions can be obtained. This course will provide solution to numerous technical problems related to load balancing.