9291_c014 - 14 Integrated Dynamic Information for the...

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14 Integrated Dynamic Information for the Western Power System: WAMS Analysis in 2005 John F. Hauer Pacific Northwest National Laboratory William A. Mittelstadt Bonneville Power Administration Ken E. Martin Bonneville Power Administration Jim W. Burns Bonneville Power Administration Harry Lee British Columbia Hydro & Power Authority 14.1 Preface. ............................................................................. 14 -2 14.2 Examples of Dynamic Information Needs in the Western Interconnection. ............................................... 14 -2 Damping Control with the Pacific HVDC Intertie . Threat of 0.7 Hz Oscillations . WSCC Breakup of August 10, 1996 14.3 Needs for ‘‘Situational Awareness’’: US–Canada Blackout of August 14, 2003. ......................................... 14 -6 14.4 Dynamic Information in Grid Management . .............. 14 -8 14.5 Placing a Value on Information . ................................... 14 -9 14.6 An Overview of the WECC WAMS. ........................... 14 -10 14.7 Direct Sources of Dynamic Information. ................... 14 -13 14.8 Interactions Monitoring: A Definitive WAMS Application. ................................................................... 14 -14 14.9 Observability of Wide Area Dynamics . ...................... 14 -15 WECC Event 031212: Three-Phase Fault at Malin . WECC Event 030604: Northwest Oscillations 14.10 Challenge of Consistent Measurements. ..................... 14 -21 Inconsistencies Produced by Filter Differences . Timing Inconsistencies Produced as Pure Time Delays . Evaluation of PMU Performance . Need for Reference Signals 14.11 Monitor System Functionalities. ................................. 14 -31 14.12 Event Detection Logic. ................................................. 14 -32 14.13 Monitor Architectures . ................................................ 14 -33 14.14 Organization and Management of WAMS Data. ...... 14 -34 14.15 Mathematical Tools for Event Analysis . ..................... 14 -36 Western System Breakup of August 10, 1996 . Effects of the Alber ta Connection . Model Validation against WSCC Tests on June 7, 2000 . ACDC Interaction Tests in September 2005 14.16 Conclusions . ................................................................. 14 -42 Glossary of Terms. .................................................................... 14 -45 Appendix A WECC Requirements for Monitor Equipment 14 -46 Appendix B Toolset Functionalities for Processing and Analysis of WAMS Data . ................................. 14 -47 ß 2006 by Taylor & Francis Group, LLC.
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14.1 Preface This chapter deals w ith the direct analysis of power system dynamic performance. By ‘‘direct’’ we mean that the analysis is performed on the physical system, and that any use of system models is secondar y. Many of the tools and procedures are as applicable to simulated response as to measured response, however. Comparison of the results thus obtained is strong ly recommended as a means to test model validit y, and to determine the realism of model studies. The resources needed for direct analysis of a large power system represent significant investments in measurement systems, mathematical tools, and staff exper tise. New market forces in the electricit y industr y require that the ‘‘value engineering’’ of such investments be considered ver y carefully. Many guidelines for this can be found in collective utilit y experience of the Western Electricity Coordinating Council ( WECC), in the western interconnection of the Nor th America power system. Much of this is encapsulated in the WECC plan for compliance w ith monitoring requirements established by the Nor th American Electric Reliabilit y Council (NERC) [1]. The WECC monitors all aspects of system perform- ance, not just system distur bances.
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9291_c014 - 14 Integrated Dynamic Information for the...

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