Reliability assessment of a power system with high penetration of wind and cascade hydropower plant considering wind correlation

摘要

This paper presents a method to assess the impact on system reliability of wind integration, considering coordinated operation with cascade hydropower. The seasonal characteristics of river flows and correlation amongst different wind farms are considered. Time sequential Monte Carlo simulation and Latin Hypercube Sampling techniques are used to preserve the characteristics of the time series of the wind speed, water inflows, load, etc. Reliability indices are developed and used to assess, the impact of wind energy production on system reliability. The proposed method is applied to northwest grid of China. Results show the validity of the method.