On-line Estimation of Available Generator Reactive Power for Network Voltage Support

Dragosavac, Jasna; Janda, Žarko; Milanović, Jovica V.; Arnautović, Dušan; Radojičić, Bojan

doi:10.1049/cp.2012.2014

Cited by 13 publications

(8 citation statements)

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“…Therefore,Q j , Q j can be pre-calculated based on the value of P j and the generator capability charts. Depending on the type of the generator, its capability chart is given by [23]- [25].…”

Section: A Dso Capability Surfacementioning

confidence: 99%

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Reactive Power Support Adequacy at the DSO/TSO Interface

Stanković

Söder

Hagemann

et al. 2021

Electric Power Systems Research

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The exchange of reactive power at the interface between distribution and transmission systems gains significant importance with ongoing relocation of generators to lower voltage levels. To keep transmission systems operation secure and stable, distribution systems may need to be more flexible when exchanging power at the interface with the overlaying grid. A flexibility measure of this interface is proposed by this paper through introduction of flexibility coefficients. These coefficients are calculated by comparing DSO capability and TSO desirability surfaces. These surfaces describe the distribution system's capability to provide flexible reactive power exchange and the transmission system's needs to use these flexibilities. Since the surfaces can be calculated independently, the newly proposed method of flexibility assessment can be applied without substantial exchange of system information between DSO and TSO. The proposed concept is illustrated on the Nordic 32 system for a case of the connection of two differently behaving distribution systems.

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Section: A Dso Capability Surfacementioning

confidence: 99%

“…respectively. The synchronous generators connected to the system have capability charts described by [23]. It is assumed that all generators participate in the balancing operations of the system.…”

Section: Case Studymentioning

confidence: 99%

Reactive Power Support Adequacy at the DSO/TSO Interface

Stanković

Söder

Hagemann

et al. 2021

Electric Power Systems Research

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“…Synchronous generator is a primary source of reactive power in the network and plays an important role in maintaining the voltage stability in the network. The boundaries for supplying the reactive power at a given active power output is defined by the generator capability curve provided by the manufacturers (Dragosavac et al 2012). Following operational constraints are the reasons for the limits in active and reactive power of the synchronous generator (Machowski, Bialek, and Bumby 2008 Figure 1.…”

Section: Generator Capability Curvementioning

confidence: 99%

Online Monitoring of a Synchronous Generator's Capability with MATLAB

Khadka¹,

Winkler²,

Øyvang³

2020

Linköping Electronic Conference Proceedings

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The future power systems are expected to operate closer to its security and stability limits mainly due to growth in variable renewable generation and the increase in load demand. In particular, voltage stability has been a major subject of discussion and concern in electric power system operation and planning worldwide. This evolution of the power system demands enhancement in ability from large synchronous generators to respond to change in demand and supply. In this contribution, a new visualization tool for online monitoring of a synchronous generator's capability is presented. In addition, the proposed tool is illustrated with a long-term voltage stability simulation carried out on a 10-bus benchmark power system. It is shown that the load models, load tap changing transformer and generator over-excitation limiter have a significant influence on voltage stability and collapse phenomena.

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“…Sa sistemske tačke gledišta, je takođe važno uzeti u obzir, u okviru modela, i dodatne elemente (generator, blok transformator, svu opremu direktno napojenu sa terminala generatora) putem formiranja modela ekvivalentnog generatora povezanog sa prenosnim sistemom s eksplicitnim uključenjem mogućnosti generatora. Stoga treba identifikovati detaljnu pogonsku kartu ekvivalentnog generatora u tački priključenja [7] i uključiti je u model. Pri tome treba uzeti u obzir uticaj mogućih varijacija kontrolnih promenljivih (podešenje generatorskog napona) kao i uticaj napona VN sabirnica na granične mogućnosti generatora [7].…”

Section: Optimalna Raspodela Reaktivne Snageunclassified

“…Stoga treba identifikovati detaljnu pogonsku kartu ekvivalentnog generatora u tački priključenja [7] i uključiti je u model. Pri tome treba uzeti u obzir uticaj mogućih varijacija kontrolnih promenljivih (podešenje generatorskog napona) kao i uticaj napona VN sabirnica na granične mogućnosti generatora [7]. Napred navedeno predstavlja jezgro podprograma za Q raspodelu koji je inkorporisan u algoritam rada GRPRS [5].…”

Section: Optimalna Raspodela Reaktivne Snageunclassified

10.5937/zeint24-6997 = Assessment of the operating conditions of coordinated Q-V controller within secondary voltage control system

Arnautović¹,

Dragosavac²,

Janda³

et al. 2014

Zb EI Nikola Tesla

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Kratak sadržaj: U radu se razmatra mogućnost direktnog uključenja uređaja za grupnu regulaciju pobude i reaktivnih snaga u automatizovani sistem upravljanja naponima u elektroenergetskom sistemu. Grupni regulator pobude i reaktivnih snaga (GRPRS) predstavlja sistem kojim se vrši automatsko upravljanje reaktivnim režimom elektrane i raspodela reaktivnog opterećenja među generatorima paralelno spregnutim preko blok transformatora i uključenim u grupni rad. Realizacijom sistema za grupnu regulaciju reaktivne snage postiže se ravnomerna raspodela reaktivnog opterećenja agregata koji učestvuju u grupnoj regulaciji, a prema mogućnostima koje definišu pogonske karte pojedinih agregata. Grupnu regulaciju agregata u okviru elektrane potrebno je realizovati kako bi se uravnotežila eksploatacija agregata i kako bi se obezbedilo da se agregati u grupnoj regulaciji ravnomerno odazivaju na poremećaje u elektroenergetskom sistemu, kako bi se obezbedio rad agregata unutar pogonskog dijagrama pri različitim radnim uslovima u mreži (uslovi izuzetno niskih i izuzetno visokih napona) kao i radi adekvatnog definisanja naponsko-reaktivne karakteristike u tački priključenja elektrane na prenosnu mrežu. Sa stanovišta elektroenergetskog sistema implementacija GRPRS omogućava: i) praktičnu realizaciju sekundarne regulacije napona u sistemu, ii) maksimalno iskorišćenje raspoložive reaktivne rezerve u sistemu što doprinosi udaljavanju od granice naponske stabilnosti sistema, iii) ocenu doprinosa svakog generatora u pružanju pomoćne usluge regulacije napona. GRPRS ima potpuni uvid u reaktivnu i naponsku rezervu svakog generatora, prati stanje u mreži kroz napon na sabirnicama tako da se može koristiti da u realnom vremenu dostavlja operatoru sistema cenu i tarifnu zonu proizvedene 1

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On-line Estimation of Available Generator Reactive Power for Network Voltage Support

Cited by 13 publications

References 0 publications

Reactive Power Support Adequacy at the DSO/TSO Interface

Reactive Power Support Adequacy at the DSO/TSO Interface

Online Monitoring of a Synchronous Generator's Capability with MATLAB

10.5937/zeint24-6997 = Assessment of the operating conditions of coordinated Q-V controller within secondary voltage control system

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