Enhanced Energy Management System with Corrective Transmission Switching Strategy. Part II: Results and Discussion

TL;DR

This paper introduces an enhanced energy management system that incorporates corrective transmission switching to improve reliability and reduce costs in real-time power system operations, demonstrating significant benefits through simulations.

Contribution

It presents a novel EMS procedure integrating corrective transmission switching, enabling practical utilization of transmission flexibility for cost savings and reliability improvements.

Findings

Congestion costs are significantly reduced with CTS.

CTS relieves potential post-contingency network violations.

Integration of CTS impacts market operations positively.

Abstract

This paper presents a novel procedure for energy management system (EMS) that can utilize the flexibility in transmission network in a practical way. With the proposed enhanced EMS procedure, the reliability benefits that are provided by corrective transmission switching (CTS) in real-time contingency analysis (RTCA) can be translated into significant cost savings in real-time security-constrained economic dispatch (RT SCED). Simulation results show the congestion cost with consideration of CTS is largely reduced as CTS can relieve potential post-contingency network violations. The effects of integrating CTS in existing EMS procedure on markets are also analyzed. In conclusion, this two-part paper shows that CTS can achieve substantial reliability benefits, as well as significant cost savings.