QUESTIONS FROM PREVIOUS QUESTION PAPERS
    1. Briefly explain the control area concept and control area error
    1. Obtain the dynamic response of load frequency control of an isolated power system for first order approximation.
    2. Obtain the dynamic response of load frequency controller with and without integral control action.
    1. Explain the necessity of maintaining a constant frequency in power system operation.
    2. Two generators rated 200 MW and 400 MW are operating in parallel. The drop characteristics of their governors are 4 percent and 5 percent respectively from no load to full load. Assuming that the generators are operating at 50 Hz at no load, how would a load of 600 MW be shared between them? What will be the system frequency at this load? ...

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