Open AccessUse of local bus measurements for operational planning of a power system
Author(s) -
Hazarika Durlav,
Talukdar Bani Kanta,
Das Ranjay
Publication year - 2013
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2012.0521
Subject(s) - thévenin's theorem , sensitivity (control systems) , phasor , slack bus , voltage , electrical impedance , electric power system , ac power , power (physics) , equivalent impedance transforms , computer science , engineering , electrical engineering , electronic engineering , power flow study , equivalent circuit , physics , quantum mechanics
This study describes a method to prepare operational planning of a power system using the measurements of bus variables. For this purpose, voltage and current phasors of a target bus have to be measured for two consecutive time instances. These measurements are then used to determine the Thevenin's equivalent voltage and impedance of the system. The Thevenin's equivalent voltage, impedance and bus voltage of the target bus are used to derive sensitivity relations for change in real and reactive powers with respect to change in the bus voltage of the target bus. The sensitivity relations are utilised in the decision‐making process, during operational planning of a power system.