Sensitivity Analysis of Composite Dynamic Load on Power System Short-Term Voltage Stability

Abstract

In the modern power system, load dynamics has a significant influence on the stability of power systems, while the study of it still requires further research. The characteristics of some load components, like electronic loads, need to be deeply evaluated. This paper aims to study the influence of internal configuration and parameters in a new complex load model on short-term voltage stability, especially electronic loads. The short-term voltage stability evaluation is applied as the test object for the new model. First, the feasibility of the proposed model is tested with the default and another dynamic model. Then, a trajectory sensitivity analysis is applied on the internal parameters of the new model to quantitatively evaluate their influences on the short-term voltage stability. An IEEE benchmark, the New England 10-machine 39-bus system, is chosen as the test carrier on a simulation environment software and a time domain simulation software. After the simulation, a systematic result is obtained.