What is it about?

This paper presents secondary voltage control by extracting reactive power from renewable power technologies to control load buses voltage in a power system at different operating conditions. The study is performed on a 100% renewable 14-bus system. Active and reactive powers controls are considered based on grid codes of countries with high penetration levels of renewable energy technologies. A pilot bus is selected to implement the secondary voltage control. The selection is based on short-circuit calculation and sensitivity analysis. An optimal PID voltage controller is designed by using genetic algorithm. A comparison between system with and without secondary voltage control is presented in terms of voltage profile and total power losses. The optimal voltage magnitudes at busbars are calculated to achieve minimum power losses using optimal power flow. Optimal placement of Phasor Measurement Units (PMUs) is performed to measure the voltage magnitude of buses with minimum cost. Simulation and optimization studies are performed by using DIgSILENT and MATLAB software applications.

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Why is it important?

Toward 100% renewable power system, Secondary voltage control, Tertiary voltage control, Grid code, wind farms, and Photovoltaic parks.

Perspectives

Future power systems with 100% renewable energy, wind farms and PV parks.

Professor Omar H. Abdalla
Helwan University

Read the Original

This page is a summary of: Secondary Voltage Control Application in a Smart Grid with 100% Renewables, Inventions, August 2020, MDPI AG,
DOI: 10.3390/inventions5030037.
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