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Reactive Power Dispatch for Large Number of PV Installations

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Reactive Power Support Using Photovoltaic Systems

Part of the book series: Springer Theses ((Springer Theses))

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Abstract

The reactive power controls proposed in the literature can be categorised into three types: centralised, distributed, and local control. The classification of decentralised control in [1], defined as “intermediate state between centralised and distributed control” shall be classified as distributed control for the remainder of this work as both distributed and decentralised controls in [1] require some forms of communication. It is also noted that there are other definitions of distributed and decentralised which assume no communication [2], but those controls are defined as local in this work.

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Notes

  1. 1.

    \(V_{x}\) is the voltage at the node where the xth PV is located. Perhaps the notation \(V_{i_{x}}\) is more suitable, but \(V_{x}\) has been adopted for simplicity.

  2. 2.

    \(P_{i}^{\text {PV}}\) and \(P_{j}^{\text {PV}}\) are different from \(P_{x}^{\text {PV}}\), in the sense that the former two quantities are concerned with the PV generation at some particular nodes i and j (which may or may not have PV), whereas the latter is concerned with the generation of the xth PV. Similar notations are also used for \(Q^{\text {PV}}\). As is the case throughout the thesis, i and j are indices reserved for nodes in a system, whereas x is the index for PV and other DERs.

  3. 3.

    MASDS even performed better than LOGO at certain periods in 69-bus system, as shown in Fig. 5.14a.

  4. 4.

    It might be counterintuitive for a constant PF control to have any oscillation since the PV reactive power outputs are supposed to be constant with constant irradiance. The oscillations result from the constant shift in the sign of (\(\left| V_{x,t}^{\text {meas}}\right| -V_{\text {ref}}\)), which also changes the sign of \(Q_{x,t}^{\text {PV}}\).

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  1. Solar Energy Research Institute of Singapore, National University of Singapore, Singapore, Singapore

    Dr. Oktoviano Gandhi

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Gandhi, O. (2021). Reactive Power Dispatch for Large Number of PV Installations. In: Reactive Power Support Using Photovoltaic Systems. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-030-61251-1_5

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