首页|A Two-Step Approach for Multi-topology Identification and Parameter Estimation of Power Distribution Networks
A Two-Step Approach for Multi-topology Identification and Parameter Estimation of Power Distribution Networks
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To improve observability in power distribution net-works(PDN),a two-step framework of multi-topology identi-fication and parameter estimation is proposed in this paper.Specifically,in the first step,a mixed-integer linear program(MILP)model-based split method is proposed to recognize mixed topologies in a multi-record dataset without a prerequisite on the number of topology categories and values of nodal voltage phase angles.In the second step,line parameters and nodal voltage phase angles are estimated using the Newton-Raphson method based on nodal measurements of real and reactive power injections,as well as voltage magnitudes.Furthermore,a modified estimation model is proposed to apply to the multi-topology dataset.Finally,case studies on an IEEE 33-bus system illustrate the effectiveness of the proposed models in identifying the PDN's topologies,as well as estimating line parameters and voltage phase angles.
MILPNewton-Raphson methodparameter estimationpower distribution systemtopology identification
Li Ma、Lei Wu、Nian Liu、Wei Pei
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Institute of Electrical Engineering,and Key Laboratory of Long-Duration and Large-Scale Energy Storage,Chinese Academy of Sciences,Beijing 100190,China
Department of Electrical and Computer Engineering,Stevens Institute of Technology,Hoboken,NJ 07030,USA
State Key Laboratory of Alternate Electrical Power Sys-tem With Renewable Energy Sources,North China Electric Power University,Beijing 102206,China
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