General estimation of reactive power control of DG sources on voltages in distribution grids

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OriginalspracheEnglisch
Titel des SammelwerksIEEE 2011 EnergyTech
Seiten1-6
Seitenumfang6
PublikationsstatusVeröffentlicht - 1 Mai 2011

Abstract

Nowadays, DG sources have a major effect on the operation of distribution grids. Due to in the future even more power will be fed in decentrally, it is imperative that small producers offer system services like reactive power provision and voltage control in the distribution layer. Previous work dealed with the general estimation of the impact of different types of DG sources on voltage bounds and grid losses depending on the installed capacity and the location in the grid. It was seen that DG sources at first positively effect grid losses but after exceeding a certain amount which is almost reached nowadays grid losses will virtually always rise. Generally, injected power leads to higher voltages especially in the low voltage layer. It was shown that the most limiting constraint of DG sources is not the transport capacity of the grid but the voltage tolerance band. In this paper, different strategies to keep the voltage within the bounds by adjusting reactive power injection of DG sources are presented. It is proven that a voltage-dependent control strategy produces the best results.

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General estimation of reactive power control of DG sources on voltages in distribution grids. / Wolter, M.; Hofmann, L.
IEEE 2011 EnergyTech. 2011. S. 1-6.

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Wolter M, Hofmann L. General estimation of reactive power control of DG sources on voltages in distribution grids. in IEEE 2011 EnergyTech. 2011. S. 1-6 doi: 10.1109/EnergyTech.2011.5948538
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title = "General estimation of reactive power control of DG sources on voltages in distribution grids",
abstract = "Nowadays, DG sources have a major effect on the operation of distribution grids. Due to in the future even more power will be fed in decentrally, it is imperative that small producers offer system services like reactive power provision and voltage control in the distribution layer. Previous work dealed with the general estimation of the impact of different types of DG sources on voltage bounds and grid losses depending on the installed capacity and the location in the grid. It was seen that DG sources at first positively effect grid losses but after exceeding a certain amount which is almost reached nowadays grid losses will virtually always rise. Generally, injected power leads to higher voltages especially in the low voltage layer. It was shown that the most limiting constraint of DG sources is not the transport capacity of the grid but the voltage tolerance band. In this paper, different strategies to keep the voltage within the bounds by adjusting reactive power injection of DG sources are presented. It is proven that a voltage-dependent control strategy produces the best results.",
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AU - Hofmann, L.

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KW - power distribution control

KW - power grids

KW - reactive power control

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KW - general estimation

KW - DG sources

KW - distribution grids

KW - distribution layer

KW - voltage tolerance band

KW - voltage-dependent control strategy

KW - Reactive power

KW - Wind turbines

KW - Natural gas

KW - Voltage control

KW - Power cables

KW - Voltage measurement

KW - Energy management

KW - power system control

KW - distributed power generation

KW - wind energy

KW - solar energy

KW - Smart Grids

KW - Power System reliability

KW - power system simulation

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