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Improving PV Hosting Capacity of Distribution Grids Considering Dynamic Voltage Characteristic
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.ORCID iD: 0000-0002-6126-3598
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.ORCID iD: 0000-0002-8189-2420
2018 (English)In: 2018 POWER SYSTEMS COMPUTATION CONFERENCE (PSCC), IEEE , 2018Conference paper, Published paper (Refereed)
Abstract [en]

Since the penetration of renewable energy sources is rapidly increasing in distribution grids, the hosting capacity (HC) of distribution systems becomes the main concern. According to EN 50160, in LV grids, the mean value of voltage cannot exceed 1.1 pu (static characteristic) and voltage rapid changes should be kept less than 0.05 pu (dynamic characteristic). Existing researches evaluated the HC of distribution grids just based on the static characteristic. However, wind speed variations and rapid moving cloud, casting shadow on solar panels, can cause rapid voltage changes in LV grids. This paper studies the rapid voltage change by modeling the moving cloud shadow and compares the HC from perspective of both dynamic and static characteristic, which is not done before. Since voltage dynamic characteristic could be more restrictive than the static characteristic, as shown in a German distribution grid, a static synchronous compensator (STATCOM) is proposed and controlled to regulate dynamic voltage profile and to improve the HC.

Place, publisher, year, edition, pages
IEEE , 2018.
Keywords [en]
Distribution grids, Dynamic voltage regulation, Hosting capacity, reactive power control, renewable energy sources
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-238159DOI: 10.23919/PSCC.2018.8442517ISI: 000447282400034Scopus ID: 2-s2.0-85054006080OAI: oai:DiVA.org:kth-238159DiVA, id: diva2:1261487
Conference
2018 POWER SYSTEMS COMPUTATION CONFERENCE (PSCC)
Funder
Swedish Energy Agency
Note

QC 20181107

Available from: 2018-11-07 Created: 2018-11-07 Last updated: 2018-11-26Bibliographically approved

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Hasanpor Divshali, PoriaSöder, Lennart

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