Abstract
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 in order to implement the secondary voltage control. The selection is based on short-circuit calculation and sensitivity analysis. An optimal Proportional Integral Derivative (PID) voltage controller is designed 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. The optimal placement of Phasor Measurement Units (PMUs) is performed in order to measure the voltage magnitude of buses with minimum cost. Optimization and simulation processes are performed using DIgSILENT and MATLAB software applications.
Highlights
One of the main visions of the future power systems is high penetration level of renewable energy technologies [1,2]
Synchronous generators are the main sources of reactive power to support voltage and maintain stability
Coordinated Secondary voltage control is applied to control a load bus in a grid feeding from 100% renewable energies through extracting reactive power from inverter-based renewable energy power plants
Summary
One of the main visions of the future power systems is high penetration level of renewable energy technologies [1,2]. In [15], the paper illustrates a technique to apply distributed secondary voltage control among inverter-based generation systems. Coordinated Secondary voltage control is applied to control a load bus (not include a distributed generation) in a grid feeding from 100% renewable energies through extracting reactive power from inverter-based renewable energy power plants. The grid codes of integrating renewable energies for countries with high share of renewable energies mainly photovoltaics (PV) and wind are considered while applying secondary voltage control and primary frequency control. In this paper, selecting a 100% renewable power system was an objective to ensure the validity of controlling the pilot bus load voltage control from only renewable generators. The power system of controlling the pilot bus load voltage control from only renewable generators.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
