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Integrated framework for dynamic security analysis
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DOI：10.1109/59.708671.png)
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Abstract
En 中文
Rapid changes are taking place in the electric utility business. Issues such as limited investment in new production and transmission facilities, proliferation of independent power producers, new regulatory requirements for transmission access and environmental concerns are forcing changes in electric utility operations, putting more emphasis on efficient use of existing resources. Ever increasing power transfers over long distances have pushed the operating conditions of the power systems closer to the stability limits. The various special control schemes to deal with the resulting security problems have allowed the operation of the power systems even closer to the security limits of the system. Any breach of security under these conditions can have far reaching impact. Transient stability simulation is an important tool used extensively in planning and operating power: systems which face such stressed conditions. This paper describes an integrated framework for dynamic security analysis in both the on-line and the off-line modes. In the on-line mode, the framework allows for the use of efficient techniques for the pre-selection, screening and ranking of contingencies and the calculation of relevant operating limits. In the off-line mode, this framework can help the operations planner by: Providing a friendly graphical user interface Guiding a systematic progression in the decision making process Preparing relevant combinations of available options and adverse system operating conditions Minimizing inadvertant omissions Performing routine data manipulation Archiving and retrieving information Checking the input data for completeness, consistency and reasonability Organizing the output results from various cases The computational capabilities of modern workstations along with innovative software technologies have been exploited to develop a software system that can capture and apply the knowledge of operations planners so as to minimize or eliminate the tedious tasks associated with the system operational planning process.
Keywords:
expert systems
power system
operation
planning
transient stability
dynamic security
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