Harmonic reduction in the static VAR compensator by sequence control of transformer taps

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Harmonic reduction in the static VAR compensator by sequence control of transformer taps

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© The Institution of Electrical Engineers
Published

Owing to discontinuous current in a thyristor-controlled reactor (TCR) of a static VAR compensator, harmonic currents are generated in the supply system. The paper presents a new method for reducing these harmonics. In the method used, the TCR is fed through the sequentially controlled transformer taps. Two alternative approaches of sequence control of transformer taps are described. The feasibility of the proposed method has been verified experimentally.

Inspec keywords: thyristor applications; compensation; harmonics; transformers; reactors (electric)

Other keywords: sequence control; thyristor-controlled reactor; harmonic currents; static VAR compensator; harmonic reduction; transformer taps; discontinuous current

Subjects: Power convertors and power supplies to apparatus; Transformers and reactors

References

    1. 1)
      • L. Gyugyi , E.R. Taylor . Characteristics of static thyristor-controlled shunt compensators for power transmission system applications. IEEE Trans. , 1794 - 1804
    2. 2)
      • R.L. Hauth , T.E. Humann , R.J. Newell . Application of a static VAR system to regulate system voltage in Western Nebraska. IEEE Trans. , 1955 - 1964
    3. 3)
      • L. Gyugyi . Control of shunt compensation with reference to new design concepts. IEE Proc. C, Gen., Trans. & Distrib. , 6 , 374 - 381
    4. 4)
      • S.C. Kapoor . Dynamic stability of long transmission systems with static compensators and synchronous machines. IEEE Trans. , 124 - 134
    5. 5)
      • L. Gyugyi , R.A. Otto , T.H. Putman . Principles and applications of static, thyristor-controlled shunt-compensators. IEEE Trans. , 1935 - 1945
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