Assessing the Transient Structure with Respect to the Voltage Stability in Large Power System

摘要

This paper proposes a new algorithm to simulate the transient voltage stability and assess the electrical transient process under the condition of disturbance occurring in multi-machine power system operation. This mathematical model is applied to calculate the transient state variables and determine the values of transient voltage stability estimation in order to assess the transient state of the power system. The transient values of relative voltage stability sensitivity are also determined to estimate the impacts of the deviations of function vectors and of the controlled variable vectors affecting the state variables of the power system, in consequence, to assess the transient structure of power system with respect to the voltage stability in multi-machine power system. Typical examples and results are shown in this paper.