Load Flow Study & Analysis

It is the computational procedure (numerical algorithms) required to determine the steady state operating characteristics of a power system network from the given line data and bus data.

A load flow study is an assessment of the steady-state conditions of the electrical system. Its goal is to determine the flow of power, current, voltage, real power, and reactive power in a system under any load conditions. During the design phase of a new project or when evaluating changes and additions to existing electrical system, a load flow study is necessary to ensure system voltages and current remain within safe limits and whether additional equipment or services will be required.

The load flow study is one of the most difficult studies in the power systems studies. This study evaluates the ability of the system to adequately supply loads while remaining within required voltage and current ranges. The power flow study report will determine voltage and power factor across all buses, as well as current or power flow across all feeders.

The study of load flow involves the following three steps:

  • Modeling of power system components and network.
  • Development of load flow equations
  • Solving the load flow equations using numerical techniques

At the end of the studies, the mysteries below would be revealed to engineers and load flow studies consultant:

  • What are the voltage levels at all system nodes during operation?
  • Are the power system elements (transformer, generator, cables, etc.) adequate or overloaded?
  • Where is the weakest point of the system?

The operation of the power system under current operating conditions, up grading, and future capacity growth all requires load or power flow analysis. For an electric load or power flow study and analysis, please contact us.