Probabilistic Assessment of the Effect of a Spatially Distributed Hybrid Renewable Energy Source Plant on System Transient Stability

Due to the interest in both the environmentally sustainable development and the flexibility of power system, hybrid renewable energy source (HRES) plant has become an attractive research topic. HRES plant represents a mix of various generation and storage technologies seen as a single entity from the perspective of system operators. This paper investigates the impact of a spatially widely distributed HRES plant on transient stability of transmission network on the basis of three representative 24-hour operation scenarios. Probabilistic approach is used for performing transient system stability analysis. The transient stability index is chosen for assessing the influence of the HRES plant on transient system stability. The study is carried out on a large 255-bus transmission system containing four realistic transmission networks. The simulations are conducted in Matlab and DIgSILENT/PowerFactory software environment.