SVC Control Components and Models
4.8 SUMMARY
138 SVC CONTROL COMPONENTS AND MODELS
operating condition. A harmonic-voltage source model in series with a variable source admittance is proposed in ref. [27]. Harmonic-performance studies are based on certain assumptions, as follows:
1. The effect of multiple harmonic sources can be investigated by applying the superposition principle.
2. The SVC harmonic generation can be modeled by positive-, negative-, and zero-sequence harmonic sources.
3. The system can be represented by linear models at each harmonic fre- quency.
4. The precise evaluation of harmonic distortion must have accurate load modeling.
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140 SVC CONTROL COMPONENTS AND MODELS
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CHAPTER 5