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Content Provider | IET Digital Library |
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Author | Tafti, Hossein Dehghani Maswood, Ali Iftekhar Konstantinou, Georgios Pou, Josep Kandasamy, Karthik Lim, Ziyou Ooi, Gabriel H. P. |
Abstract | Low-voltage ride-thorough capability is among the challenges in the operation of medium- and large-scale grid-connected photovoltaic power plants (PVPPs). In addition, reactive power injection during voltage sags is required by power system operators in order to enhance the voltage of the point of common coupling. The performance of medium- and large-scale grid-connected PVPPs during these events is studied. An algorithm for the calculation of current references, in the dq-frame, during voltage sags is introduced, which considers the inverter current limitation, grid code requirements and the amount of extracted power from photovoltaic strings. The proposed algorithm uses the full current capacity of the inverter in injecting active or reactive powers to the grid during voltage sags, which leads in a better grid voltage enhancement. The performance of proposed control strategies is investigated on a 150-kVA PVPP connected to the 12.47-kV medium-voltage test-case system simulation model during different fault conditions. An experimental setup of the 3.3-kVA grid-connected three-level neutral-point-clamped inverter with a dc/dc converter illustrates and validates the performance of the controller in injecting required active/reactive power and supporting the network voltage. |
Starting Page | 1182 |
Ending Page | 1190 |
Page Count | 9 |
ISSN | 17521416 |
Volume Number | 11 |
e-ISSN | 17521424 |
Issue Number | Issue 8, Jun (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/11/8 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2016.0544 |
Journal | IET Renewable Power Generation |
Publisher Date | 2016-12-01 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Active Power Injection Apparent Power 150 KVA Apparent Power 3.3 KVA Current References Dc-dc Converter DC-DC Power Converter Dq-frame Fault Condition Fault Diagnosis Grid Code Requirements Grid Voltage Enhancement Harmonics Inverter Current Limitation Invertors Large-scale Grid-connected PVPP Low-voltage Ride-thorough Capability Medium-scale Grid-connected Photovoltaic Power Plant Medium-voltage Test-case System Simulation Model Network Voltage Photovoltaic Grid-connected Neutral-point-clamped Inverter Photovoltaic Power System Photovoltaic Strings Point of Common Coupling Power Grid Power Supply Quality Power System Operators Reactive Power Reactive Power Injection Reference Circuit Solar Power Stations Three-level Inverter Voltage 12.47 KV Voltage Sag |
Content Type | Text |
Resource Type | Article |
Subject | Renewable Energy, Sustainability and the Environment |
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