Load Current Investigation examines the electrical network to ensure that current is flowing. It helps to find out the working condition of the power system, active and reactive power produced, losses, voltage, current and power factor.  

Load current analysis consists of the following three steps:

• Modeling of electrical system network and components
• Generation of load current equations
• Load and current equations are solved by numerical methods.

There are three methods for calculating information about an electrical system:

• One of the most commonly used analysis methods is the Gauss-Seidel system. The advantage of this approach is that it is easy to use, requires few computer resources and does the job faster. However, due to late access, more iterations are required. As the number of buses increases, the number of iterations increases.
• The Newton-Raphson method, which is more complex, uses quadratic convergence, which is useful in complex situations. Since fewer iterations are required to reach convergence, this method uses less computing power. Because it depends less on complex factors such as transformer regulation and bus selection for slack, it is more accurate. Programming can be difficult because it uses quite a lot of machine memory.
• The Rapid Decoupled Load Flow System is another technique for carrying out load flow analysis (FDLF (Fast Decoupled Load Flow)). The key benefit of this approach is that it consumes less computer memory. Given that the computation speed is five times faster than that of the Newton-Raphson technique, it is a well-liked replacement for real-time power grid management. Only specific circumstances allow for the use of this piece of software. As a result, it is more difficult to modify it to take into account other concerns like flow or system protection in the power business.