The impact of large-scale wind farms on power system stability should be carefully investigated

in which mal-functions usually exist in the collector line's relay protection. In order to solve this challenging problem

a novel time-domain protection scheme for collector lines

based on random matrix theory (RMT)

is proposed in this paper. First

the collected currents are preprocessed to form time series data. Then

a real-time sliding time window is used to form a consecutive time series data matrix. Based on RMT

mean spectral radius (MSR) is used to analyze time series data characteristics after real-time calculations are performed. Case studies demonstrate that RMT is independent from fault locations and fault types. In particular

faulty and non-faulty collector lines can be accurately and efficiently identified compared with traditional protection schemes.