DEVELOPMENT OF A SENSITIVITY INDEX BASED TECHNIQUE FOR UNIFIED POWER FLOW CONTROLLER PLACEMENT WITH CONTINGENCY ANALYSIS ON NIGERIA 330kV TRANSMISSION NETWORK
DEVELOPMENT OF A SENSITIVITY INDEX BASED TECHNIQUE FOR UNIFIED POWER FLOW CONTROLLER PLACEMENT WITH CONTINGENCY ANALYSIS ON NIGERIA 330kV TRANSMISSION NETWORK
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Date
2018-02
Authors
SAMBO, Kurutsi
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Abstract
Power system network is designed to operate in a prescribed voltage and frequency for stability
and for better power quality. Unexpected contingencies leads to instability related problems in
the system. This research develops a sensitivity index based technique with contingency
analysis for Unified Power Flow Controller (UPFC) placement for Nigeria 330kV power
transmission system. The research employed Newton Raphson power flow method considering
multiple contingency analyses which include double line outages, line and load outages, double
load outages and load increments. The identification of the severity of the violated bus voltages
was achieved through the use of Active Power Performance Index (APPI) and Reactive Power
Performance Index (RPPI). The contingency cases were addressed through the sizing and
placement of UPFC on the network and simulated in Matlab R2013a environment. The analyses
shows that the predominately violated buses and the sizes of the UPFC placed are Maiduguri
bus (-183 MVar), Birni Kebbi bus (99 MVar) Oshogbo bus (-84MVar), Jos bus (-28 MVar),
Gombe bus (-13 MVar) and Kano bus (21 MVar). The result shows 1.3% (694.6233MVar)
reduction in the total reactive power loss as compared with base case of (703.7499MVar) after
the placement of UPFC and a total voltage improvement of 3.11% (31.9298pu) as compared to
the base case voltage deviation of (32.9541pu). The developed approach was analyzed on IEEE
30 bus network with a transmission line power loss reduction of (0.00166pu) and a voltage
improvement of 0.83% (30.6753pu) as compared to the work of Reddy et al., (2014) with power
loss of (0.02116pu) and a voltage of (30.4214pu).
Description
A THESIS SUBMITTED TO THE DEPARTMENT OF ELECTRICAL
ENGINEERING, AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL
FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER OF
SCIENCE (M.Sc.) DEGREE IN ELECTRICAL ENGINEERING
Keywords
DEVELOPMENT,, SENSITIVITY INDEX,, TECHNIQUE,, UNIFIED, POWER FLOW CONTROLLER PLACEMENT,, CONTINGENCY ANALYSIS,, NIGERIA 330kV,, TRANSMISSION NETWORK