What happens if a power supply is unstable?

Get valuable resources straight to your inbox - sent out once per month An unstable power supply can cause severe system issues, such as audible noise from the passive components, unexpected jittering in the switching frequency, extreme oscillations on the output voltage during load transient events, and failures in the semiconductor switches.

What is voltage stability in power systems?

Voltage stability in power systems is defined as the ability of a power system to maintain acceptable voltages at all the buses in the system under normal condition and after being subjected to a disturbance .

Why is voltage stability important?

Voltage stability has become a progressively significant issue in modern power distribution networks due to increasing load demands and distributed generation penetration. Compared with traditional power systems, the voltage control capability of renewable energy power generation systems is limited [1, 2, 3].

Do we need a voltage stability analysis for renewable-dominated power systems?

Therefore, appropriate analytical methods are needed for the voltage stability analysis of renewable-dominated power systems, which incorporate a large number of inverters and distributed energy sources.

How to determine voltage stability of power systems with wind power penetration?

In , a voltage stability evaluation of power systems with wind power penetration was conducted. In this study, the P–V curve was used to determine the voltage stability limit of the system. DIgSILENT PowerFactory software was used for the simulation, and the results were analyzed with MATLAB.

What happens if voltage control capability is lower than a certain range?

When the voltage control capability of a specific power system is lower than a certain range, the power system becomes unstable. For example, in a double-fed induction generator-based wind energy conversion system (DFIG-WECS), the voltage control capability is dependent on the wind generation penetration rate .