Newton-Raphson State Estimation Solution Employing Systematically Constructed Jacobian Matrix

Newton-Raphson State Estimation method using bus admittance matrix remains as an efficient and most popular method to estimate the state variables. Elements of Jacobian matrix are computed from standard expressions which lack physical significance. In this paper, elements of the state estimation Jacobian matrix are obtained considering the power flow measurements in the network elements. These elements are processed one-by-one and the Jacobian matrix H is updated suitably in a simple manner. The constructed Jacobian matrix H is integrated with Weight Least Square method to estimate the state variables. The suggested procedure is successfully tested on IEEE standard systems.

Authors:

• Nursyarizal Mohd Nor
• Ramiah Jegatheesan
• Perumal Nallagownden

Keywords:

• State Estimation (SE)
• Weight Least Square (WLS)
• Newton-Raphson State Estimation (NRSE)
• Jacobian matrix H.

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