A Novel Technique for Transmission Loss Allocation in Restructured Power System

  • Naimul Hasan
  • Ibraheem Nasiruddin
  • Yudhishthir PandeyEmail author
Original Article


Transmission loss allocation in a restructured power system is vital in today’s electricity market around the world. The problem of transmission loss allocation among the various participants is getting more attention with the increase of the competition level in electricity markets. In this paper, a novel routing algorithm with minimum transmission loss is proposed for judicious allocation of transmission losses over a network. Proposed routing algorithm computes the power flow path through transmission line from the individual generator to load utilizing the shortest path with minimum loss criterion. The load demand is fulfilled with the power flow through the decisively selected transmission path. The new method of transmission loss allocation has distinct advantages over existing methods as locational dependence of loss allocation to both generator and load. The proposed algorithm is implemented on IEEE-30 bus system. The experimental results are obtained with proposed routing algorithm and compared with existing method. Results obtained using proposed method illustrate significant improvements in reducing the transmission losses.


Loss allocation Optimal DG placement Restructured power system Routing algorithm 

List of symbols

s1, s2



Branch current


Total load current


Current in arbitrary branch b due to generators 1 and 2


Current distribution factor in line b for generators 1 and 2


Current supplied by generator 1 and 2


Phase angle of currents I1 and I2


3φ generated power of generator 1 and 2

cos φ1, cos φ2

Power factors associated with generator 1 and 2


Total transmission loss


Loss coefficients


Routing decision variable for line k connected between bus i and j


Arbitrary line connected between bus i and j


Number of buses in network


Number of lines


Total generated power


Total demand


Net incoming power at a bus


Net outgoing power from a bus


Power flow through \(k{\text{th}}\) line


Minimum and Maximum value of power through line k

\(P_{{loss(G_{p} toD_{qi} )}}\)

Transmission loss in serving power from the generator Gp to Dq



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Copyright information

© The Korean Institute of Electrical Engineers 2019

Authors and Affiliations

  • Naimul Hasan
    • 2
  • Ibraheem Nasiruddin
    • 2
  • Yudhishthir Pandey
    • 1
    Email author
  1. 1.Department of Electrical EngineeringJamia Millia IslamiaNew DelhiIndia
  2. 2.Department of Electrical EngineeringQassim UniversityBuraydahKingdom of Saudi Arabia

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