Locating minimum number of PMUs for pre- and post-disturbance monitoring of power systems

In this study, the post-disturbance coherency of buses is added to the conventional phasor measurement unit (PMU) placement problem to find the minimum number of PMUs at different depths of unobservability. To do that, different scenarios are defined based on probabilistic parameters. Then, in each...

Full description

Saved in:
Bibliographic Details
Published in:IET generation, transmission & distribution transmission & distribution, 2019-01, Vol.13 (1), p.127-136
Main Authors: Rezaeian Koochi, Mohammad Hossein, Esmaeili, Saeid, Ledwich, Gerard
Format: Article
Language:English
Subjects:
16‐machine system
68‐bus system
pattern clustering
phasor measurement
phasor measurement unit placement problem
PMU placement problem
post‐disturbance coherency
post‐disturbance monitoring
post‐disturbance variations
power system dynamics
power system reliability
power system state estimation
predisturbance monitoring
probabilistic parameters
probability
Research Article
state estimation methods
subtractive clustering algorithm
unobservable buses
voltage phasor
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, the post-disturbance coherency of buses is added to the conventional phasor measurement unit (PMU) placement problem to find the minimum number of PMUs at different depths of unobservability. To do that, different scenarios are defined based on probabilistic parameters. Then, in each scenario, central buses are determined based on the similarity of post-disturbance variations using subtractive clustering algorithm. The central bus in each area is the bus that its post-disturbance variations are similar to the highest number of buses in the area. The PMU placement problem is then solved considering the number of scenarios where each bus has been selected as a central bus. The resulted placement scheme is more suitable for monitoring the power system dynamics compared to the conventional method. In order to reduce the number of PMUs, the placement problem is solved for higher depths of unobservability. In each depth, the voltage phasor of unobservable buses is obtained using state estimation methods. The results of applying the proposed methodology on 68-bus, 16-machine system show its better performance compared to the conventional method.
ISSN:1751-8687
1751-8695
1751-8695
DOI:10.1049/iet-gtd.2018.6404