Development of a Model for Improving Power System Voltage Stability in Nigerian 330kv 48-Bus Network During Loss of Equivalent Network
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- October 10, 2023
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Aneke, Chinedu1*, Prof. Eneh, Innocent Ifeanyichukwu2 and Iyidiobi, Jonathan Chijindu PhD3
123Department of Electrical and Electronic Engineering, Enugu State University of Science and Technology, Enugu
ABSTRACT
This research work aims at improving the voltage stability of the Nigerian 330KV Power network using Hybrid devices – Unified Power Flow Controller (UPFC) and Static Var Compensator (SVC) – of FACTS devices. The electric power system voltage stability is being threatened by disturbances in different ways such that the system becomes unstable. The threat which emerges as loss of generation to switching, change in loads, and fault conditions creates an adverse effect on Nigerian power system. The undesirable impact of the disturbances can be so severe that both the utility providers and consumers suffer seriously. The instability on the network causes frequent outages cascaded blackouts and sometimes voltage collapse. This increases production cost for industrial consumers and reduces national development. Unfortunately, the attempts made, to resolve this problem has not given a maximum result. Line and Bus data used as input data were collected from Transmission Company of Nigeria. Load flow was performed first as a straw test to know if the system was healthy or not, and consequently continuation power flow was also run to determine the critical buses that need to be compensated. The models of UPFC and SVC were developed. An equivalent network of the 48-bus 330KV network was created. Artificial neural network controllers were created and trained to optimize the compensating capacity of the hybrid device. To enhance the voltage stability of the Nigerian 330KV 48-bus network during the contingency of loss of equivalent on the line. The hybrid device (UPFC-SVC) was connected to the network and simulated and the result showed that it improved the power system stability by 25% as against when the system was not compensated.
Keywords: Improving Power System Voltage Stability; Nigerian 330kv 48-Bus Network; During Loss of Equivalent Network
Citation: Aneke, C., Eneh, I. I. & Iyidiobi, J. C. (2023). Development of a Model for Improving Power System Voltage Stability in Nigerian 330kv 48-Bus Network During Loss of Equivalent Network. European Journal of Engineering and Environmental Sciences 7(4), 12-23. DOI: https://doi.org/10.5281/zenodo.8425318
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