Bulk power system availability assessment with multiple wind power plants

Abstract

The use of renewable non-conventional energy sources, as wind electric power energy and photovoltaic solar energy, has introduced uncertainties in the performance of bulk power systems. The power system availability has been employed as a useful tool for planning power systems; however, traditional methodologies model generation units as a component with two states: in service or out of service. Nevertheless, this model is not useful to model wind power plants for availability assessment of the power system. This paper used a statistical representation to model the uncertainty of power injection of wind power plants based on the central moments: mean value, variance, skewness and kurtosis. In addition, this paper proposed an availability assessment methodology based on application of this statistical model, and based on the 2m+1 point estimate method the availability assessment is performed. The methodology was tested on the IEEE-RTS assuming the connection of two wind power plants and different correlation among the behavior of these plants.

Uncertainty model for rate of change of frequency analysis with high renewable energy participation

“…The assessment of the RoCoF for a power system with multiple renewable sources (m) can be made using the 2m+1 PEM method including correlated behavior between them. Detailed information on this process can be found in [22], [28]- [30]. For a successful implementation, the first four central moments of each random variable (each renewable source) are required (𝜇 𝑝𝑙 , 𝜎 𝑝𝑙 , 𝜆 𝑝𝑙,3 , 𝜆 𝑝𝑙,4 ).…”

Voltage stability enhancement for large scale squirrel cage induction generator based wind turbine using STATCOM

“…Expressly, wind energy does not accelerate pace of the global warning [1]. Due to the unpredictable changes in weather and climate, the stability and quality of power produced by wind turbines are threated, hence, the efficiency of the whole power system may be degraded [2]. To continue the operation without being isolated by protection devices, wind turbines should satisfy the grid codes while operating in transient conditions.…”