The Opportunities for Efficiency Increase of Phase-Shifting Transformers in Power Transmission Operational Modes

Lev, Kalinin; Zaitsev, D.A.; Tirsu, Mihai; Golub, I.V.

doi:10.1109/isgteurope.2019.8905480

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The voltage transformer windings are so coupled that phase-quadrature voltages are created on its secondary side and are fed into the series transformer's secondary windings. Adding small, phase-quadrature voltage components to the line's phase voltages thus produces phase-shifted output voltages without any significant magnitude change [21]- [24]. The resulting angular shift is nearly proportional to the applied voltage for relatively small angular changes, although the voltage amplitude remains nearly constant.…”

Section: Figure 1 Current Distribution In Parallel Lines Between Two ...mentioning

confidence: 99%

Phase shifting transformer to reduce power congestions and to redistribute power in interconnected systems

Halasiddappa

Shivakumar²

2023

IJECE

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<span lang="EN-US">The increased penetration of wind and solar power, as well as the liberalized electricity market, makes the power system network interconnected and complex. As the power demand is increasing daily, the complexity of operating large power systems is also increasing. Congestion in the transmission network may become more common than previously, making power flow management a problem that becomes increasingly important. Unexpected power flows (also known as loop flows) are becoming a bigger issue in today's linked power networks. These flows have a detrimental impact on the safe functioning of integrated power networks, which hinders their ability to conduct cross-border trade. Phase shifting transformers (PSTs) allow real power flow to be controlled by changing the phase shift across the device. This study deals with two interconnected parallel power system networks and the power flow controlled through a PST in between. The simulation results emphasize the importance of the PST in facilitating the transfer of energy throughout the regional transmission interconnection.</span>

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Section: Figure 1 Current Distribution In Parallel Lines Between Two ...mentioning

confidence: 99%

Phase shifting transformer to reduce power congestions and to redistribute power in interconnected systems

Halasiddappa

Shivakumar²

2023

IJECE

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“…Another group of approaches for the elimination of the heterogeneity of closed electrical networks is based on the forced change of the network diagram parameters by connecting FACTS (Flexible Alternative Current Transmission Systems) facilities [2][3][4][5][6][7]. One of the options for this approach is the longitudinal compensation of the PTL parameters in the supply network [8].…”

Section: Introductionmentioning

confidence: 99%

Application of voltage phase angle control in power system with unevenly loaded supply network

2020

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In real power system situations of uneven loading of supply lines included in the section, forming connection between the source and the power system or separate dedicated load node, often occur. In such situations one of power transmission lines (PTL) will be loaded below the nominal installed capacity, while the other parallel communication line will be overloaded. Elimination of uneven load in PTL can be performed by the phase angle control between the voltages at the beginning and end of the connection. One of the effective means for the phase angle control is a phase-shifting transformer (PST), the control of which is provided by the redistribution of power flows in individual PTLs of the section with the elimination of their uneven loading. On the example of simulation and computational experiments carried out in the power system of Azerbaijan, the effectiveness of use of voltage phase angle control in the power system with a significant uneven loading in the controlled sections of the supply network of the system is shown. Analysis of the effect of elimination of the unevenness on reducing losses in the network and increasing the efficiency of using power generation at stations is given.

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The Opportunities for Efficiency Increase of Phase-Shifting Transformers in Power Transmission Operational Modes

Cited by 2 publications

References 3 publications

Phase shifting transformer to reduce power congestions and to redistribute power in interconnected systems

Phase shifting transformer to reduce power congestions and to redistribute power in interconnected systems

Application of voltage phase angle control in power system with unevenly loaded supply network

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