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  • 1
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    Co-simulation based platform for thermostatically controlled loads as a frequency reserve (2016)
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    UID:
    gbv_1860757634
    Format: 6
    ISBN: 9781509011582
    Content: The rise in the intermittent power generation from renewables shall increase the secondary frequency reserve requirements in the future power system. Complimenting the support from the generators in providing frequency reserve, the active demand response can result in a cost effective contribution to this resource. Among demand response resources, the thermostatically controlled loads (TCLs) connected to the medium voltage networks poses an interesting potential. This work develops a co-simulation environment for the TCLs based demand side management scheme that can be used to assess the network impacts of using this service. An equivalent battery model with dynamic charging rate limits models the TCL aggregation and tracks a realistic frequency regulation signal. The co-simulation platform is tested for the IEEE 119 node distribution test feeder.
    In: MSCPES (2016 : Wien), 2016 Workshop on Modeling and Simulation of Cyber-Physical Energy Systems (MSCPES), Piscataway, NJ : IEEE, 2016, (2016), 9781509011582
    In: 1509011587
    In: 1509011595
    In: 9781509011582
    In: 9781509011599
    In: year:2016
    In: extent:6
    Language: English
    DOI: 10.1109/MSCPES.2016.7480224
    URL: https://doi.org/10.1109/MSCPES.2016.7480224
    Author information: Gawlik, Wolfgang 1971-
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  • 2
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    A flexible smart grid co-simulation environment for cyber-physical interdependence analysis (2016)
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    UID:
    gbv_1860894305
    Format: 6
    ISBN: 9781509011582
    In: MSCPES (2016 : Wien), 2016 Workshop on Modeling and Simulation of Cyber-Physical Energy Systems (MSCPES), Piscataway, NJ : IEEE, 2016, (2016), 9781509011582
    In: 1509011587
    In: 1509011595
    In: 9781509011582
    In: 9781509011599
    In: year:2016
    In: extent:6
    Language: English
    DOI: 10.1109/MSCPES.2016.7480226
    URL: https://doi.org/10.1109/MSCPES.2016.7480226
    Author information: Gawlik, Wolfgang 1971-
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  • 3
    Article
    Article
    Bereitstellung synthetischer Schwungmasse durch Wasserkraftwerke : = Providing synthetic inertia with hydro power plants (2016)
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    UID:
    gbv_1860895557
    ISSN: 0932-383X
    Content: Die ausreichende Verfügbarkeit der für die Systemstabilität wichtigen Momentanreserve, aktuell bereitgestellt durch die Schwungmasse rotierender Maschinen, wird in einem zunehmend von erneuerbarer Einspeisung über Wechselrichter geprägten Netz immer wichtiger. In diesem Kontext werden die Bereitstellung und der Abruf von synthetischer Schwungmasse, welche durch Wasserkraftanlagen in Kombination mit einem Umrichter zur Netzkupplung verfügbar ist, prinzipiell erörtert. Es wird das Systemkonzept dargestellt und auf die technischen Grenzen eingegangen. Abschließend wird noch ein mögliches Marktkonzept für die Systemdienstleistung „Momentanreserve“ vorgestellt.
    In: Elektrotechnik und Informationstechnik, Wien : Springer, 1988, 133(2016), 8, Seite 388-394, 0932-383X
    In: volume:133
    In: year:2016
    In: number:8
    In: pages:388-394
    Language: German
    Author information: Gawlik, Wolfgang 1971-
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  • 4
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    Bericht vom 9. ETG-/FNN-Tutorial Schutz- und Leittechnik 2016 (2016)
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    UID:
    gbv_1860896677
    ISSN: 1613-7620
    In: Elektrotechnik und Informationstechnik, Wien [u.a.] : Springer, 1997, 133(2016), 3, Seite 191-192, 1613-7620
    In: volume:133
    In: year:2016
    In: number:3
    In: pages:191-192
    Language: German
    DOI: 10.1007/s00502-016-0401-2
    URL: https://doi.org/10.1007/s00502-016-0401-2
    Author information: Gawlik, Wolfgang 1971-
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  • 5
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    Reserve Capability Assessment Considering Correlated Uncertainty in Microgrid (2016)
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    UID:
    gbv_1860896898
    In: Institute of Electrical and Electronics Engineers, IEEE transactions on sustainable energy, New York, NY : IEEE, 2010, 7(2016), 2, Seite 637-646
    In: volume:7
    In: year:2016
    In: number:2
    In: pages:637-646
    Language: English
    DOI: 10.1109/TSTE.2015.2498143
    URL: https://doi.org/10.1109/TSTE.2015.2498143
    Author information: Gawlik, Wolfgang 1971-
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  • 6
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    Analysis of Power Network for Line Reactance Variation to Improve Total Transmission Capacity (2016)
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    UID:
    gbv_1860801641
    Format: 20
    ISSN: 1996-1073
    Content: The increasing growth in power demand and the penetration of renewable distributed generations in competitive electricity market demands large and flexible capacity from the transmission grid to reduce transmission bottlenecks. The bottlenecks cause transmission congestion, reliability problems, restrict competition, and limit the maximum dispatch of low cost generations in the network. The electricity system requires efficient utilization of the current transmission capability to improve the Available Transfer Capability (ATC). To improve the ATC, power flow among the lines can be managed by using Flexible AC Transmission System (FACTS) devices as power flow controllers, which alter the parameters of power lines. It is important to place FACTS devices on suitable lines to vary the reactance for improving Total Transmission Capacity (TTC) of the network and provide flexibility in the power flow. In this paper a transmission network is analyzed based on line parameters variation to improve TTC of the interconnected system. Lines are selected for placing FACTS devices based on real power flow Performance Index (PI) sensitivity factors. TTC is computed using the Repeated Power Flow (RPF) method using the constraints of lines thermal limits, bus voltage limits and generator limits. The reactance of suitable lines, selected on the basis of PI sensitivity factors are changed to divert the power flow to other lines with enough transfer capacity available. The improvement of TTC using line reactance variation is demonstrated with three IEEE test systems with multi-area networks. The results show the variation of the selected lines’ reactance in improving TTC for all the test networks with defined contingency cases.
    In: Energies, Basel : MDPI, 2008, 9(2016), 11, Artikel-ID 936, 1996-1073
    In: volume:9
    In: year:2016
    In: number:11
    In: elocationid:936
    In: extent:20
    Language: English
    DOI: 10.3390/en9110936
    URL: Volltext
    Author information: Gawlik, Wolfgang 1971-
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  • 7
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    Optimal distributed hybrid-storage and voltage support of photovoltaic systems (2013)
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    UID:
    gbv_1862635625
    Format: 4
    ISBN: 1849197326
    Content: Due to climate change and limitations of fossil energy sources, political goals that lead towards a massive increase in renewable and distributed generation, e.g. photovoltaic (PV), wind power, etc. have been proposed. However renewable generation units increase the volatility of electricity production, are only conditionally controllable and are characterized by low full load hours. These negative aspects challenge the integration of renewable energy sources into the electrical grid. Remedial measures that can be applied are the integration of hybrid energy storage in the existing energy system and the use of installed PV systems for voltage support. Hybrid energy storage balances deviations in generation and load. By providing reactive power, PV systems can limit the increased voltage level, which can be observed especially in weak grids in case of a reversed load flow due to a high power production. This paper is going to describe how to achieve a decentralized generation-load-balance by coupling the existing infrastructures (electrical, gas and thermal networks), using decentralized hybrid storage, enabling a massive integration of renewable energy sources into electrical distribution systems, as examined in the project “Symbiose”. Parallel to the work of “Symbiose”, benefits of voltage support by PV systems in the German distribution network will be presented.
    In: CIRED (22. : 2013 : Stockholm), 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013), [Piscataway, NJ] : IEEE, 2013, (2013), 1849197326
    In: 9781849197328
    In: year:2013
    In: extent:4
    Language: English
    DOI: 10.1049/cp.2013.1180
    URL: https://doi.org/10.1049/cp.2013.1180
    Author information: Gawlik, Wolfgang 1971-
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  • 8
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    Online Resource
    Stochastic battery model for aggregation of thermostatically controlled loads (2016)
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    UID:
    gbv_1861146167
    ISBN: 9781467380751
    Content: The potential of demand side as a frequency reserve proposes interesting opportunity in handling imbalances due to intermittent renewable energy sources. This paper proposes a novel approach for computing the parameters of a stochastic battery model representing the aggregation of Thermostatically Controlled Loads (TCLs). A hysteresis based non-disruptive control is used using priority stack algorithm to track the reference regulation signal. The parameters of admissible ramp-rate and the charge limits of the battery are dynamically calculated using the information from TCLs that is the status (on/off), availability and relative temperature distance till the switching boundary. The approach builds on and improves on the existing research work by providing a straight-forward mechanism for calculation of stochastic parameters of equivalent battery model. The effectiveness of proposed approach is demonstrated by a test case having a large number of residential TCLs tracking a scaled down real frequency regulation signal.
    In: IEEE International Conference on Industrial Technology (2016 : Taipeh), 2016 IEEE International Conference on Industrial Technology (ICIT), Piscataway, NJ : IEEE, 2016, (2016), Seite 570-575, 9781467380751
    In: 146738075X
    In: 1467380768
    In: 9781467380751
    In: 9781467380768
    In: year:2016
    In: pages:570-575
    Language: English
    DOI: 10.1109/ICIT.2016.7474812
    URL: Volltext
    Author information: Gawlik, Wolfgang 1971-
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  • 9
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    Zuverlässigkeit und Qualität : [Kurzfassung eines Vortrags bei der 52. Fachtagung der Österreichischen Gesellschaft für Energietechnik (OGE)im OVE, die am 16. und 17. Oktober 2014 in Wels stattfand] (2014)
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    UID:
    gbv_1861532598
    Format: 1
    ISSN: 1613-7620
    In: Elektrotechnik und Informationstechnik, Wien [u.a.] : Springer, 1997, 131(2014), 8, Seite 451, 1613-7620
    In: volume:131
    In: year:2014
    In: number:8
    In: pages:451
    In: extent:1
    Language: German
    DOI: 10.1007/s00502-014-0248-3
    URL: Volltext
    Author information: Gawlik, Wolfgang 1971-
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  • 10
    Article
    Article
    Energieträger-übergreifende Speicher im Universal Grid : = Distributed hybrid energy storage in the Universal Grid (2013)
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    UID:
    gbv_1861611773
    ISSN: 0932-383X
    Content: Der stabile Betrieb des elektrischen Energiesystems erfordert den schnellen und dauerhaften Ausgleich zwischen Erzeugung und Verbrauch elektrischer Energie. Dezentrale Energieträger-übergreifende Speicher spielen dabei eine immer größer werdende Rolle.
    In: Elektrotechnik und Informationstechnik, Wien : Springer, 1988, 130(2013), 6, Seite 145–147, 0932-383X
    In: volume:130
    In: year:2013
    In: number:6
    In: pages:145–147
    Language: German
    Author information: Gawlik, Wolfgang 1971-
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