A Critical Survey of Transient and Small-Signal Stability Enhancement Techniques in Renewable-Dominated Power Systems

Aliyu Sabo, Nyam Sesugh Abednigo, Bilyaminu Abdullahi Muhammad, Bala Micaiah Sunday, Tidah Daniel Kurmi

Abstract


Countries around the world are shifting from traditional power systems dominated by synchronous generators towards renewable-dominated power systems, characterized by high levels of converter-interfaced generators (CIGs). With this shift, a lot of fast power electronic devices will be added to the grid as renewable energy source increases, thus making the system dynamic response increasingly faster and more complex. These future features of the power system create challenges in power system stability and control. To maintain power system stability in the future and achieve a smooth shift in the power system, we need to change from the traditional, synchronous generator-based controls and begin to explore new methods. This paper presents a critical survey on transient and small signal stability of such renewable-dominated power systems. This is achieved by a critical analysis of Transient stability assessment methods, Control-based enhancement and the impact of inverter-based resources on stability. Constantly increasing number of renewable energy resources such as photovoltaic and wind power plants has a significant impact on the stability of electricity transmission. In this article there are different transient stability assessment methods: TEF, Direct Methods, Time-domain simulation and control-based enhancement techniques: FACTS, PSS, and Wide-Area Measurement Systems that are considered. 


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