DISTRIBUTION NETWORK REDUCTION FOR VOLTAGE STABILITY ANALYSIS AND LOADFLOW CALCULATIONS

This paper presents an innovative technique for loadflow calculations and voltage instability analysis of distribution networks. A method for reducing a radial network into a single line equivalent has been developed which simplifies lengthy calculations of an unreduced network. This reduced network also enables the fast computation of loadflow solutions of distribution networks. The conditions for voltage collapse to occur are easily derived from the single line equivalent. In all the calculations, no voltage computation is required as all the voltages are eliminated from the governing equations. Test results indicate the superiority of the technique compared to other known methods.