TITLE:
Modeling and Simulation of a Transmission Line Response to a 400 kV/400V Capacitor Coupled Substation
AUTHORS:
Sinqobile Wiseman Nene, Bolanle Tolulope Abe, Agha Francis Nnachi
KEYWORDS:
Capacitor Coupled Substation, Conventional Rural Electrification, Unconventional Rural Electrification, Transmission Line Behavior, Power System Simulation
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.11 No.12,
December
12,
2023
ABSTRACT: The access to electricity in rural areas is extremely limited, but it is
crucial for all citizens. The population in
rural areas of sub-Saharan African (SSA) countries is generally low,
making it economically unfeasible to implement traditional rural
electrification (CRE) projects due to the high cost of establishing the
necessary distribution infrastructure. To address this cost issue, one
alternative technology for rural electrification (URE) that can be explored is
the Capacitor Coupled Substation (CCS) technology. CCS is a cost-effective
solution for supplying electricity to rural areas. The research is necessitated
by the need to offer a cost-effective technology for supplying electricity to
sparsely populated communities. This paper examines the impact on the
transmission network when a 400 kV/400V CCS is connected to it. The system
response when a CCS is connected to the network was modeled using MATLAB/Si-mulink. The results, based
on the fixed load of 80 kW, showed negligible interference on the transmission
line voltage. However, there was minor impact on the parameters downstream of
the tapping point. These findings were further supported by introducing a fault
condition to the CCS, which showed that interferences with the CCS could affect
the overall stability of the transmission network downstream of the tapping
node, similar to the behavior of an unstable load.