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Application of Static Synchronous Compensator (STATCOM) in Improving Power System Performance: A Case Study of The Nigeria 330 KV Electricity Grid
Abstract
Slow response of the conventional traditional methods for improving power system performance creates the need for adoption of advanced control technologies such as Flexible Alternating Current Transmission System (FACTS) with fast response and low cost for stabilizing electricity grid power and voltage. In this work, we examined the effect of application of Static Synchronous Compensator (STATCOM), a FACTS controller on the performance of the Nigeria 330 kV, 28-bus power system. The conventional and modified Newton-Raphson-based power flow equations describing the steady state conditions before and after compensation was made to the system were presented. Solutions to the developed equations were obtained using Matlab software (Version 7.9.0.529 ‘R2009b’). The results from the analysis showed that before the application of STATCOM, five (5) of the twenty eight ( 28) buses of the sample system have their voltage magnitudes fell outside the statutory limit of 0.95 Vi 1.05 p.u, which were improved to 1.0 p.u. each at inclusion of STATCOM. Similarly, the total system active power loss was reduced by 5.88% from 98.21 to 92.44MW. Evidence from this finding is that STATCOM application on the Nigeria electricity grid will stabilise the system’s voltage and reduce the overall transmission active power loss thereby releasing spare capacities for more consumers.
