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Optimal PMU placement using topology transformation method in power systems.

Nadia H A Rahman¹, Ahmed F Zobaa¹

¹Brunel University London, College of Engineering, Design and Physical Sciences, United Kingdom.

Journal of Advanced Research

|August 5, 2016

Summary

This study introduces a new method for optimal placement of phasor measurement units (PMUs) to ensure power system observability with minimal PMUs. The approach uses topology transformation rules for efficient PMU deployment.

Keywords:

Integer linear programming Phasor measurement unit Power flow measurements Power system measurements Topology Zero-injection bus

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Area of Science:

Electrical Engineering
Power Systems Analysis

Background:

Ensuring power system observability is crucial for reliable grid operation.
Minimizing the number of Phasor Measurement Units (PMUs) is key to cost-effective monitoring.

Purpose of the Study:

To propose novel selection rules for topology transformation to optimize PMU placement.
To determine the minimum number of PMUs required for complete power system observability.

Main Methods:

A topology transformation method involving merging zero-injection buses with neighbors.
Development of three rules to select the best candidate bus for merging.
Formulation of the problem as an integer linear programming (ILP) model.
Consideration of power flow measurements.

Main Results:

The proposed method effectively determines optimal PMU placement.
Simulation results on IEEE bus systems demonstrate the method's efficacy.
The number of PMUs obtained is comparable to existing techniques.

Conclusions:

The developed selection rules provide an effective approach for optimal PMU placement.
The method ensures full power system observability with a minimized number of PMUs.
The integer linear programming formulation is suitable for this optimization problem.