Power system energy analysis incorporating comprehensive load characteristics
- 1 January 2007
- journal article
- Published by Institution of Engineering and Technology (IET) in IET Generation, Transmission & Distribution
- Vol. 1 (6), 855-863
- https://doi.org/10.1049/iet-gtd:20060458
Abstract
The energy function method developed so far assumes that the active load is constant. However, most of the actual load is voltage dependent, which hinders the application of the energy analysis method to the actual power system. On the other hand, the fast development of measurement techniques, especially the wide area measurement systems (WAMS) applied widely in worldwide power system nowadays, presses for the on-line transient stability analysis tools based on the system measurements. The voltage-dependent load into the energy analysis of power system transient stability is discussed. The effect of the comprehensive load characteristics on the system energy is discussed and a WAMS-based energy indicator on the system stability status is proposed. The indicator is easy to be calculated and thus real-time in the operation centre is monitored. The proposed method does not rely on any specific load model, and various load characteristics on different buses can be considered. Simulations on two test systems verify the effectiveness of the proposed method.Keywords
This publication has 14 references indexed in Scilit:
- Composite Load Modeling via Measurement ApproachIEEE Transactions on Power Systems, 2006
- Load Modeling by Finding Support Vectors of Load Data From Field MeasurementsIEEE Transactions on Power Systems, 2006
- The Energy Function of a General Multimachine System With a Unified Power Flow ControllerIEEE Transactions on Power Systems, 2005
- Application of energy function to assess the first-swing stability of a power system with a SVCIEE Proceedings - Generation, Transmission and Distribution, 2005
- A Structure-Preserving Energy Function for a Static Series Synchronous CompensatorIEEE Transactions on Power Systems, 2004
- Improved dynamic security assessment for SC/DC power systems using energy functionsIEEE Transactions on Power Systems, 2003
- Lyapunov function for power systems with transfer conductances: extension of the invariance principleIEEE Transactions on Power Systems, 2003
- Control Lyapunov functions for controllable series devicesIEEE Transactions on Power Systems, 2001
- Direct stability analysis of electric power systems using energy functions: theory, applications, and perspectiveProceedings of the IEEE, 1995
- Energy Function Analysis for Power System StabilityPublished by Springer Science and Business Media LLC ,1989