Inverse power flow problem;
Kron reduction;
phasor measurement units;
system identification;
TOPOLOGY IDENTIFICATION;
D O I:
10.1109/TCNS.2022.3199084
中图分类号:
TP [自动化技术、计算机技术];
学科分类号:
0812 ;
摘要:
We formulate an inverse power flow problem that infers a nodal admittance matrix from voltage and current phasors measured at a number of buses. We show that the admittance matrix can be uniquely identified from a sequence of measurements corresponding to different steady states when every node in the system is equipped with a measurement device, and a Kron-reduced admittance matrix can be determined even if some nodes in the system are not monitored (hidden nodes). We propose an effective algorithm to uncover the actual admittance matrix of a radial system with hidden nodes from its Kron-reduced admittance matrix.
机构:
Faculty of Electronics and Electrical Engineering,Malek Ashtar University of TechnologyFaculty of Electronics and Electrical Engineering,Malek Ashtar University of Technology