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Power System Operation and Control by G. Sreenivasan, S. Sivanagaraju

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12

Modeling of Speed Governing and Excitation Systems

OBJECTIVES

After reading this chapter, you should be able to:

  • develop the modeling of speed-governor systems for steam and hydraulic turbines

  • develop the modeling of speed-governor systems with limiters

  • study the effect of excitation variation on synchronous machines

  • discuss the methods of providing excitation of synchronous machines

  • study the structure of a general excitation system

  • develop the transfer functions of various components of an excitation system

12.1 INTRODUCTION

Two important control loops are needed for the economic and reliable operation of a power system. They are:

  1. Load frequency control (LFC) loop (p.f. control loop) for the regulation of system frequency.
  2. Automatic ...

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