Risk Assessment and Control Method for High Load Transmission Lines Based on Feasible Control Domain

In the risk assessment of power system lines, the probability and severity of risk occurrence are two important indicators for measuring operational safety. In order to increase the reliability of high load operation of power lines, the risk of voltage and power exceeding limits during line operation is calculated and analyzed, and the power grid is scheduled and controlled under reliability requirements. This article proposes a risk assessment and control method for high load transmission lines based on feasible control domains. The developed risk assessment model comprehensively takes into account the likelihood and potential impact of load fluctuations. The simulation analysis of the IEEE33 bus system shows that the increase in load will affect the risk index of line overload. Based on risk assessment in the feasible control domain, controlling the line can improve the stability of the system and increase the safety of the power system.