Voltage control integrated in distribution management system

Strezoski, Vladimir C.; Katić, Nenad; Janjic, Dusan S.

doi:10.1016/s0378-7796(01)00172-9

Cited by 20 publications

(31 citation statements)

References 5 publications

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“…Besides, improve voltage quality DMS Volt/Var and reduce losses as well [6][7][8], as well as Energy Audit implies tracing and reducing non-technical losses. The breakdown of electrical energy losses in networks distribution is presented in Fig.2.…”

Section: Benefits Of Dasmentioning

confidence: 99%

Smart grids investigation and analysis in terms of cost benefits

Rubini¹,

Shanmugasundaram²,

Pradeepkumar³

2018

IJET

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Currently, different advanced technologies are implemented in power networks, with aim to improve power quality and reliability of grid operation. Naturally, Distribution Automation and Management Systems (DAMS), Smart power equipment, Advanced Metering Structure, Distributed Energy Resources and/or systems Demand Response are implemented in electricity distribution networks. Smart Grid Solutions coordinate different advanced technologies in an efficient energy management system. Outline Smart Grid Solutions, with investments of estimation, possible benefits and operation costs, is presented in this article, with estimation of cost-effectiveness in a lifetime of particular systems.

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Section: Benefits Of Dasmentioning

confidence: 99%

Smart grids investigation and analysis in terms of cost benefits

Rubini¹,

Shanmugasundaram²,

Pradeepkumar³

2018

IJET

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“…Naponska regulacija je u zakonskoj regulativi prepoznata kao sistemska (pomoćna) usluga. Tržište električnom energijom u sadašnjim i budućim okvirima nameće nove zahteve svim učesnicima [6]- [7] i zahteva da proizvođačke i prenosne kompanije zajedno razvijaju nove metode za optimizaciju iskorišćenja reaktivnog kapaciteta (mogućnosti) generatora. Ovi zahtevi obično su definisani u preporukama regulatornih tela i obuhvataju: i) precizno određivanje limita u popdpobuđenoj zoni pogonske karte sinhronog generatora uzimajući u obzir kriterijume stabilnosti i termička ograničenja; ii) obezbeđivanje raspoloživosti punog reaktivnog opsega u svakoj radnoj tački u uslovima normalnih i havarijskih vrednosti napona u mreži; iii) generatori treba da rade sa faktorom snage od 0,9 induktivno do 0,95 kapacitivno i da održavaju napon na krajevima generatora u opsegu od 0,95 do 1,05 nominalne vrednosti.…”

Section: Uvodunclassified

Joint excitation and reactive power control in thermal power plant

Dragosavac¹,

Janda²,

Gajić³

et al. 2013

Zb EI Nikola Tesla

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Kratak sadržaj: U radu je prikazan uređaj za grupnu regulaciju pobude i reaktivnih snaga u termoelektrani. U radu su prvo obrazloženi potreba i opravdanost uvođenja ovakvih uređaja na elektrane. Opisane su funkcije uređaja za grupnu regulaciju pobude i reaktivnih snaga u elektrani, zatim je data teorijska osnova razvoja uređaja. Postignute performanse uređaja ilustrovane su nizom odziva tokova reaktivnih snaga i napona sabirnica nakon ugradnje uređaja u najveću termoelektranu u Srbiji, TE "Nikola tesla A".Ključne reči: termoelektrana, naponsko-reaktivna regulacija, grupna regulacija pobude i reaktivnih snaga UvodU cilju prevazilaženja nedostataka ručnog upravljanja naponima i reaktivnim snagama, razvijeni su sistemi za automatsko upravljanje naponima u elektroenergetskim sistemima (EES) sa namerom da se unaprede sigurnost, smanje gubici i olakša proces upravljanja EES [1]- [5]. Automatizacijom upravljanja naponima i reaktivnim snagama na nivou sistema predviđeno je da dispečer prenosne mreže postavi vrednosti napona u određenim čvorovima sistema i da se reaktivne snage generatora koji utiču na napone posmatranih čvorova postave automatski na potrebne vrednosti. Na ovaj način se eliminiše kašnjenje zbog učešća operatera u izvršenju komandi dispečera prenosne mreže. Ukoliko se i raspodela reaktivnog opterećenja među generatorima vrši koordinisano prema željenoj optimizacionoj funkciji, postiže se koordinisana naponsko-reaktivna regulacija.85

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“…Simultaneously with the voltage limitation criteria, it is also necessary to satisfy a certain optimisation criterion while solving this problem. The mentioned criterion can be the loss minimization, voltage sag minimization or damage minimization due to the voltage deviation from the referring (nominal) value [18,19]. The objective function, to be minimized, can be expressed through the following equation [19] ObjFun = min ∆V = min…”

Section: Equivalent LV Network Modelmentioning

confidence: 99%

“…Figure 10 shows the network voltage profiles at the maximum and minimum simultaneous powers of all the DGs, in cases when the optimal seasonal control plan is applied and when there is no optimal seasonal control plan (neutral positions of the tap changers of all the transformers). Treatment of the voltage limits: values of the upper and lower voltage limits in the MV and LV networks are specified according to the engineering standards (eg 105 and 95 %) [18]. Figure 10(a) clearly shows that by the correction of the voltage ratio at transformers 9, 10 and 15-16, in accordance with the optimal seasonal voltage control plan, the voltage values decrease at nodes 13, 17-20 and are brought down to a range within the standard limits (0.95 pu-1.05 pu).…”

Section: Case Study: 33-node Distribution Networkmentioning

confidence: 99%

See 1 more Smart Citation

Optimal Seasonal Voltage Control in Rural Distribution Networks with Distributed Generators

Radosavljević¹,

Jevtić²,

Klimenta³

2010

Journal of Electrical Engineering

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This paper proposes a procedure for determining the optimal tap changer positions of off-voltage tap changing transformers in radial rural distribution networks in presence of distributed generators (DGs). The procedure is based on spatial network decomposition and as well as bringing down a branchy LV network to an equivalent line. Optimal voltage module values of PV nodes in the optimal seasonal control plan are determined by the application of a genetic algorithm. The proposed procedure is examined in two real distribution networks: a radial 33-node network with 11 DGs modelled as PQ nodes and a radial 40-node network with three DGs in total, two of which are modelled as PV nodes and one modelled as a PQ node.

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Voltage control integrated in distribution management system

Cited by 20 publications

References 5 publications

Smart grids investigation and analysis in terms of cost benefits

Smart grids investigation and analysis in terms of cost benefits

Joint excitation and reactive power control in thermal power plant

Optimal Seasonal Voltage Control in Rural Distribution Networks with Distributed Generators

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