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[IEEE 2018 International conference on Computing, Electronic and Electrical Engineering (ICE Cube) - Quetta, Pakistan (2018.11.12-2018.11.13)] 2018 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube) - Impact of PV Penetration on Short Circuit Current of Radial Distributed Feeder and Existing Power System Protection of NUST
摘要： Integration of distributed generation into existing network can solve the problem of increasing energy demand which is due to exponential growth in world population. Integration of distributed generation has increased due to its immense advantages like low loading of transmission network, improvement in voltage profile and decrease in line losses. Despite of many advantages distributed generation also poses various adverse effects on network like harmonics, network protection, frequency instability and increase in short-circuit current level. However, it is difficult to eliminate the fault behavior due to dispersed nature of distributed generation that might affect the performance of power system protection. This is due to the change in power flow and magnitude of fault current. In this paper the effect of distributed generation on fault current level and protection of radial distribution feeder of National University of Science and Technology is studied. Three phase fault is simulated and analyzed for radial distribution network of National University of Science and Technology in MATLAB Simulink.
关键词： short circuit current,distribution system,three phase fault,PV penetration,MV distributed network,Distributed generation
更新于2025-09-19 17:15:36
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - IEEE 1547-2018 Based Interoperable PV Inverter with Advanced Grid-Support Functions
摘要： Grid integration of photovoltaic (PV) inverters has been increasing in the past decade. As a result of the uncertainties introduced with high penetrations of PV, better monitoring and control of the PV inverters becomes crucial for improving overall system stability. This paper focuses on the communications capability of the inverter controller and on enabling interoperability. Multiple standards are available to enable interoperability in PV inverters. In this paper, an interoperable controller, enabled by Distributed Network Protocol 3 (DNP3) communications protocols, is developed for a grid-connected, three-phase PV inverter. The DNP3 server for the PV inverter is programmed on the real-time layer of the field-programmable gate array (FPGA)-based inverter controller. Set points for advanced inverter control functions, such as volt/VAr curves, ride-through curves, are sent from a DNP3 client, a simulated distribution management system application, to the PV inverter through DNP3. This communications capability of the inverter controller is validated using a controller-hardware-in-the-loop experimental setup. The code developed to achieve the interoperability is available in the public domain through open-source software licensing. This interoperability will enable smoother grid integration of smart PV inverters with advanced grid-support functions as well as allow better monitoring and control of PV inverters for grid stability.
关键词： Distributed Network Protocol,DNP3,PV inverter,advanced grid-support functions,interoperability
更新于2025-09-19 17:13:59