Load Flow Analysis Of Balanced And Unbalanced Weakly Meshed Distribution System Using Two Stage Backward Forward Sweep Multi-Port Compensation Technique
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Date
2022
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Department of Electrical Engineering, NITS
Abstract
A load flow algorithm is proposed for a distribution system having a weakly meshed structure for both balanced and unbalanced system. Load flow of a radial system is first solved using fast and flexible radial power flow method which requires construction of radial configuration matrix. For a weakly meshed system, a two-staged load flow algorithm is proposed by implementing a fast and flexible radial power flow (FFRPF) method. Firstly, a meshed distribution network is converted to a radial network by breaking the loops and the load flow of that radial network is done to obtain the open circuit breakpoint voltage. Then, the breakpoint currents are calculated using breakpoint impedance matrix. Secondly, breakpoint currents are injected into the radial network and the load flow is carried out again. In this way we can obtain the results of the original meshed network. The proposed load flow algorithm is validated using a 6 bus system, IEEE 33 bus test feeder and an unbalanced 8 bus system.