Abstract
As one of the most important renewable energy resources, wind power has drawn much attention in recent years. The stochastic characteristics of wind speed lead to generation output uncertainties of wind energy conversion system (WECS) and affect power system reliability, especially at high wind power penetration levels. Therefore, a more comprehensive analysis toward WECS as well as an appropriate reliability assessment model are essential for maintaining the reliable operation of power systems. In this paper, the impact of wind turbine outage probability on system reliability is firstly developed by considering the following factors: running time, operating environment, operating conditions, and wind speed fluctuations. A multi-state model for wind farms is also established. Numerical results illustrate that the proposed model can be well applied to power system reliability assessment as well as solving a series of reliability-centered decision-making problems of power system scheduling and maintenance arrangements.
Highlights
Along with the rapid development of wind power technologies, the wind power penetration level grows continuously in power systems around the world
Based on a multi-state model of the conventional generators, this paper presents a multi-state model of wind farm considering of operational outage probability
The multi-state model is considered at different average wind speed levels, respectively, which can better reflect the actual operating conditions of the wind turbines
Summary
Along with the rapid development of wind power technologies, the wind power penetration level grows continuously in power systems around the world. A reliability evaluation model incorporating with wind power is proposed [1, 2], considering the wind speed prediction model and generation output characteristic model of wind turbines Among these studies, the wind turbine outage rate is usually regarded as a constant value. References [6–11] analyzed the factors that cause component outage and established an element outage rate model based on multiple operating conditions. The above researches mainly focused on establishing component function of outage probability or outage rate that using operating conditions as the independent variables. They did not take into account the impact of time scale on the component outage, making it difficult to reflect the reliability level of the short-term power system operation. We focus on modifying the existing multi-state WECS model to reflect time varying factors by adopting operational reliability theories
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
