Difference between Gauss Seidel and Newton Raphson Load flow methods
Contents
Comparison between Gauss Seidel and Newton Raphson
- The Key Difference between Gauss Seidel and Newton Raphson are in the below comparison chart.
Comparison Chart
Gauss Seidel | Newton Raphson | |
---|---|---|
Co-ordinates | Works well with rectangular coordinates. | Polar co-ordinates are preferred as rectangular coordinates occupy more memory. |
Arithmetical operations | Least in number to complete one iteration. | Elements of jacobian to be calculated in each iteration . |
Time | Requires less time per iteration, but increases with an increase in the number of buses. | Time/iteration is 7 times of GS and increases with an increase in the number of buses. |
Convergence | Linear convergence | Quadratic convergence |
No. of iterations | A large number, increases with an increase in buses. | Very less (3 to 5 only) for large system and is practically constant. |
Slack bus selection | Choice of slack bus affects convergence adversely | Sensitivity to this is minimal |
Accuracy | Less accurate | More accurate |
Memory | Less memory because of the sparsity of the matrix. | Large memory even with compact storage scheme |
Usage/application | Small size system | A large system, ill-conditioned problems, optimal load flow studies. |
Programming Logic | Easy | Very difficult |
Reliability | Reliable only for a small system. | Also, Reliable for large system |
More Difference
- Difference between Gauss Seidel and Fast Decoupled
- Difference between Fast Decoupled and Newton Raphson