Voltage Stability Assessment of Eastern Section of Integrated Nepal Power Systems
Authors: Nimmi Regmi, Shailendra Kumar Jha, Samundra Gurung, Dietmar Winkler
Abstract—Voltage instability has been one of the major reasons for power outages and blackouts across power grids around the world, incurring huge economic losses. This paper presents a case study of voltage stability analysis in the eastern section of Integrated Nepal Power System, simplified into a 17 bus network of lumped loads, generators, switching substations and power grid interface. This section is a skewed network that draws substantial amount of active and reactive power from external grid to balance the load demand. The study includes long-term voltage stability analysis of the system, assessing the load margin at base case, Q-V curves, N-1 contingency analysis, and system loss reduction under different loading condition. The simulation results show detail status of voltage profile, and helps to elucidate critical questions regarding voltage stability in the case network.Keywords—transient voltage stability, P-V curve, Q-V curve
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Published In: International Conference on Role of Energy for Sustainable Social Development (RESSD-2022)
Date of Conference: 8th-9th August 2022
Conference Location: Bhaktapur, Nepal
Publisher: IEEE Power and Energy Society Nepal Chapter
Cite the paper as:
N. Regmi, S. K. Jha, S. Gurung, D. Winkler, “Voltage Stability Assessment of Eastern Section of Integrated Nepal Power Systems ”, International Conference on Role of Energy for Sustainable Social Development, 8th-9th August 2022, Bhaktapur, Nepal