Numerical integration can show accurate trajectory of the disturbed system. however, no quantitative answer tostability can be given. Lyapunov functions provide sole sufficient but not necessary condition for autonomo...Numerical integration can show accurate trajectory of the disturbed system. however, no quantitative answer tostability can be given. Lyapunov functions provide sole sufficient but not necessary condition for autonomous systemsstability. so that they are not suitable for quantitatively studying motion stability. For non-conservative or nonautonomoussystems. it is very difficult to develop Lyapunov functions with meaningful stability domain, and the guarantee on sufficientcondition for stability might be lost by using Lyapunov-like functions. The Complementary-Cluster Energy-Barrier Criterion(CCEBC) developed in this paper is a rigorous theory and quantitative method for nonautonomous motion stability. Manyrelevant problems are studied in the paper. The Extended Equal-Area Criterion (EEAC) for power system transient stability.which has been used in engineering projects. is Just such an example.展开更多
As power system interconnections become more prevalent, there has been an increase in use of thyristor controlled shunt connected compensation devices for dynamic power compensation and enhancement of real power trans...As power system interconnections become more prevalent, there has been an increase in use of thyristor controlled shunt connected compensation devices for dynamic power compensation and enhancement of real power transmission capacity. In this paper, an enhancement technique of real power transfer capacity of transmission lines is presented. A SVC （static var compensator） is designed and applied to a simple power system for this purpose. Increase in power flow and improvement in bus voltage profile are observed after using the SVC. Stability analysis of the system after experiencing fault as well as consequent fault clearance by time domain analysis has also beeu performed and satisfactory results are obtained.展开更多
Numerical integration can show accurate trajectory of the disturbed system. however, no quantitative answer to stability can be given. Lyapunov functions provide sole sufficient but not necessary condition for autonom...Numerical integration can show accurate trajectory of the disturbed system. however, no quantitative answer to stability can be given. Lyapunov functions provide sole sufficient but not necessary condition for autonomous systems stability, so that they are not suitable for quantitatively studying motion stability. For non-conservative or nonautonomous systems. it is very difficult to develop Lyapunov functions with meaningful stability domain, and the guarantee on sufficient condition for stability might be lost by using Lyapunov-like functions. The Complementary-Cluster Energy-Barrier Criterion (CCEBC) developed in this paper is a rigorous theory and quantitative method for nonautonomous motion stability. Many relevant problems are studied in the paper. The Extended Equal-Area Criterion (EEAC) for power system transient stability, which has been used in engineering projects. is just such an example.展开更多
文摘Numerical integration can show accurate trajectory of the disturbed system. however, no quantitative answer tostability can be given. Lyapunov functions provide sole sufficient but not necessary condition for autonomous systemsstability. so that they are not suitable for quantitatively studying motion stability. For non-conservative or nonautonomoussystems. it is very difficult to develop Lyapunov functions with meaningful stability domain, and the guarantee on sufficientcondition for stability might be lost by using Lyapunov-like functions. The Complementary-Cluster Energy-Barrier Criterion(CCEBC) developed in this paper is a rigorous theory and quantitative method for nonautonomous motion stability. Manyrelevant problems are studied in the paper. The Extended Equal-Area Criterion (EEAC) for power system transient stability.which has been used in engineering projects. is Just such an example.
文摘As power system interconnections become more prevalent, there has been an increase in use of thyristor controlled shunt connected compensation devices for dynamic power compensation and enhancement of real power transmission capacity. In this paper, an enhancement technique of real power transfer capacity of transmission lines is presented. A SVC （static var compensator） is designed and applied to a simple power system for this purpose. Increase in power flow and improvement in bus voltage profile are observed after using the SVC. Stability analysis of the system after experiencing fault as well as consequent fault clearance by time domain analysis has also beeu performed and satisfactory results are obtained.
文摘Numerical integration can show accurate trajectory of the disturbed system. however, no quantitative answer to stability can be given. Lyapunov functions provide sole sufficient but not necessary condition for autonomous systems stability, so that they are not suitable for quantitatively studying motion stability. For non-conservative or nonautonomous systems. it is very difficult to develop Lyapunov functions with meaningful stability domain, and the guarantee on sufficient condition for stability might be lost by using Lyapunov-like functions. The Complementary-Cluster Energy-Barrier Criterion (CCEBC) developed in this paper is a rigorous theory and quantitative method for nonautonomous motion stability. Many relevant problems are studied in the paper. The Extended Equal-Area Criterion (EEAC) for power system transient stability, which has been used in engineering projects. is just such an example.
