Load Flow Analysis of Dhaka Grid Using PSAT and ETAP and Performance Comparison with PGCB Data

Abstract

This paper deals with a load flow simulation of
existing Dhaka Grid Circle of Bangladesh National Grid by using
Power System Analysis Toolbox (PSAT) which is a free and open
source software of MATLAB Simulink and Electrical Transient
and Analysis Program (ETAP) software designed for simulation,
operation, and automation of generation, distribution, and
industrial power systems. All the data used to simulate were
collected from Power Grid Company of Bangladesh (PGCB) and
Load flow analysis was carried out using Newton Raphson
method and simulated results were compared with PGCB Base
Case Data. The network considered to simulate has 71 buses (400,
230 and 132 kV), 135 interconnecting lines, 32 generators, 47
loads and only 4 shunt capacitors as per the Dhaka grid circle
system. Regarding the maximum demand of the load centers,
total 5,525 MW load is connected in this system and the average
grid generation in September, 2018 was 10,919.57 MW, though
only 5988 MW of the total generation is enlisted in the Dhaka
grid circle.