Self-admittance Simulation Analysis for Power Network Stability Research

The stability of the power system is an important issue in the power system. Stability is the basic requirement of the control system and the basic condition for ensuring the operation of the power system. The unstable system does not have the ability to adjust, nor can it work normally. Stability is one of the system's own characteristics[1]. Whether the system is stable or not depends on the excitation signal, but it is related to the structural parameters of the system. The system structure parameters can be reflected by self-admittance. At present, with the promotion of distributed power sources, distributed power sources are connected to the power network to improve the reliability of power supply[2]. Distributed power access to the power network has a certain impact on the stability of the power network. In this paper, the self-admissive mathematical model of the power network is established based on the concept of network function, and the actual power network stability is simulated and analyzed by MATLAB simulation platform and specific examples.