Security assessment of the year 2020 planned Western Interconnection

The aim of this paper is to present preliminary results on a system-wide security assessment of a mid-term planned Western Interconnection transmission system with high penetration of wind and solar generation. The presented approach articulates the static stability analysis and the dynamic stability analysis in an efficient way applicable to bulk power systems and from the regional planner perspective. This work also shows some of the stability challenges presented in future expanded transmission power systems due to conventional synchronous generation retirement and renewable generation deployment.