Power System Load Flow Calculation Using Newton-Raphson Method

This program employs the Newton-Raphson method to calculate power system load flow. The implementation includes transformer modeling within branches using admittance matrix formation. The test case is based on data from Page 66 of "Power System Analysis" (Volume 2, Huazhong University of Science and Technology), which has been validated through execution to ensure data accuracy. Power system load flow calculation constitutes a fundamental component of power system analysis, enabling the determination of key parameters such as voltage, current, and power across system components. The program utilizes the Newton-Raphson method to solve load flow equations, leveraging its advantages of fast convergence and high stability. The implementation incorporates transformer representation in branches through admittance matrix modeling, which effectively simplifies computational processes, reduces calculation burden, and enhances computational efficiency through sparse matrix techniques and iterative solution algorithms. In practical power system load flow calculations, additional factors such as load variations and line contingencies must be considered. For more accurate system analysis, advanced algorithms and complex models are necessary. However, for introductory purposes, this program provides a foundational understanding of basic power system load flow calculation methodologies and principles, demonstrating core implementation aspects including Jacobian matrix formation, mismatch calculation, and iterative convergence checking.