TITLE:
Model Design and Simulation of an 80 kW Capacitor Coupled Substation Derived from a 132 kV Transmission Line
AUTHORS:
Sinqobile Wiseman Nene, Bolanle Tolulope Abe, Agha Francis Nnachi
KEYWORDS:
Capacitor-Coupled Substation, Transmission Line-linked Capacitor-Coupled Substation, Capacitor-Coupled Substation Simulation, Microgrids, Rural Electrification, Power System Modeling
JOURNAL NAME:
Open Journal of Modelling and Simulation,
Vol.13 No.1,
December
16,
2024
ABSTRACT: The global rise in energy demand, particularly in remote and sparsely populated regions, necessitates innovative and cost-effective electrical distribution solutions. Traditional Rural Electrification (RE) methods, like Conventional Rural Electrification (CRE), have proven economically unfeasible in such areas due to high infrastructure costs and low electricity demand. Consequently, Unconventional Rural Electrification (URE) technologies, such as Capacitor Coupled Substations (CCS), are gaining attention as viable alternatives. This study presents the design and simulation of an 80 kW CCS system, which taps power directly from a 132 kV transmission line to supply low-voltage consumers. The critical components of the CCS, the capacitors are calculated, then a MATLAB/Simulink model with the attained results is executed. Mathematical representation and state-space representation for maintaining the desired tapped voltage area also developed. The research further explores the feasibility and operational performance of this CCS configuration, aiming to address the challenges of rural electrification by offering a sustainable and scalable solution. The results show that the desired value of the tapped voltage can be achieved at any level of High Voltage (HV) with the selection of capacitors that are correctly rated. With an adequately designed control strategy, the research also shows that tapped voltage can be attained under both steady-state and dynamic loads. By leveraging CCS technology, the study demonstrates the potential for delivering reliable electricity to underserved areas, highlighting the system’s practicality and effectiveness in overcoming the limitations of conventional distribution methods.