A novel integrated protection and control method for power lines connecting with large scale wind power is presented to improve Jiuquan wind power accommodation and delivery from the system viewpoint. The criteria based on statistics analysis of power flow fluctuation and identification of power transfer using local information are proposed to identify a heavy loading power line with a fault under wind power flow fluctuation, determine that the fault line is tripped by protection operation, and the power flow is transferred from the fault line to sound lines, which will lead to over load in sound lines. The potential loading capability of lines will be exploited under safety prerequisite with adaptive over load protection. Emergency control is used together to curtail wind power according to field conditions, and eliminate over loading in sound lines in replacement of tripping these lines, which will prevent cascading failure of grid. Based on the theory and simulation studies, protection devices are implemented and commissioned in the field and the correctness of the proposed system protection scheme is verified.