eng Science and Education Publishing American Journal of Electrical and Electronic Engineering 2328-7357 2017-12-12 5 6 195 201 10.12691/ajeee-5-6-1 AJEEE2017561 article Wang Ying 1 Ma Gang hdmagang@163.com 1 Tang Yi 2 Electrical & Automation Engineering, Nanjing Normal University, Nanjing, China Electrical Engineering, South East University, Nanjing, China As one of the core algorithms for safety and stability evaluation of the power grid, the method has been used by many scholars to analyze and control the stability of power grid. A method based on deviation correction is studied to track Thevenin equivalent parameters. This is an iterative algorithm based on the correction of the amount of deviation. The direction of the correction is determined based on the real-time data, and the parameters of the real-time estimation are obtained by iterative correction of the Thevenin equivalent parameter. It is possible to accurately track the Thevenin equivalent parameters when the system is disturbed to achieve an accurate analysis of the voltage stability. http://pubs.sciepub.com/ajeee/5/6/1/ajeee-5-6-1.pdf dynamic Thevenin equivalent deviation correction least squares method complete differential