contact me if u r familiar with power system

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A 2-page Executive Summary is common in report writing. The summary provides top-level answers to all the 5-W's, and the How's which give meaning to the overall understanding of the issues addressed.

Step 1. I urge you to first read the American Power Conference paper. 
Step 2. Given: It is unlikely that anyone could imagine a scenario such as the one described, and have studied such a scenario at the time of plant development in system planning studies. It is a completely unexpected event with unanticipated circuit breaker operation. The question simply was at that time, in the late 70's and early 80's, do we have the capability to study such disturbances and to design robust power systems? Work in the 80's brought enormous changes to the power industry, both in terms of new and improved methods of modeling and interactive real-time visualizations of power system performance.

On the other hand, if you took the sequence of events as a possibility and asked "What could be the dynamics of such an event?" Do I expect the system to remain stable? Why and under what conditions? Should I expect overvoltages? Why? What is the expected electromechanical response? Why is this of concern? Summarize the ability of a power system to recover from unexpected events. What must be present? Why? How? 

Post-disturbance analysis provides better estimates of "system" damping. The system steady-state damping estimate is based upon short-circuit analysis. The term "system" can be viewed locally and from a regional standpoint across tie-lines. Damping is not linear. Real-time damping is dependent on real and reactive power response at the instant of a disturbance, fast response (static VAR compensator) versus slow (synchronous condensor) response. Therefore, it is good practice to analyze every "major" disturbance so that the damping across a system can be estimated more accurately. You may envision this through a multi-port network with a damping characterization at each port. You develop a sense for exactly how reactive support contributes to damping, a push-pull pump effect, that brings about stability.

 

these are the details for the essay, I need simple and clear not complicated 

  • 11 years ago
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