What is it about?
A key feature in smart grids is the ability to provide real time monitoring and control. This paper presents techniques for implementing a Wide Area Measurement System (WAMS) and selecting pilot buses in the Egyptian grid to enable implementing secondary voltage control. The design technique of WAMS includes optimal placement of Phasor Measurement Units (PMUs) and Phasor Data Concentrators (PDCs), as well as their associated Communication Infrastructure (CI), to achieve minimum cost. To generalize the technique, different power grid conditions are taken into consideration such as N-1 contingency analysis (outage of a PMU or transmission line(s) or transformer(s)). Nomination of certain load buses (pilot buses) is the main step to implement optimal secondary voltage control. The method used to select pilot buses considers system-wide information and different operating conditions regarding different load levels and network topologies. The power system analyses were performed using DIgSILENT software while the optimization problems were solved in MATLAB software.
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Why is it important?
The proposed method for WAMS configuration in the Egyptian power grid has provided a clear technical and financial image of the whole grid in different operating conditions. The optimization procedure for determining the WAMS configuration has also achieved (N-2) security for the 220 kV level and (N-1) security in the 500 kV level as stated in the Egyptian grid code. The configuration of the WAMS based on the contingency case will cost 63% more than the cost of the base case. The simulation of the Egyptian grid by the DIgSILENT software is an important step for pilot bus selection. The proposed method for pilot bus selection ensures proficiency as it is based on different operating conditions, topologies, real geographical divisions, and agreement with the results of short circuit analysis.
Perspectives
I hope this paper helps engineers and academic researchers in the field of modern power system operation, control and wide-area monitoring.
Professor Omar H. Abdalla
Helwan University
Read the Original
This page is a summary of: Configuration of WAMS and Pilot Bus Selection for Secondary Voltage Control in the Egyptian Grid, September 2018, Institute of Electrical & Electronics Engineers (IEEE),
DOI: 10.1109/naps.2018.8600629.
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