@article {2512, title = {Survivability of Autonomous Microgrid during Overload Events}, journal = {IEEE Transactions on Smart Grid}, year = {2018}, month = {04/2018}, abstract = {


}, issn = {1949-3053}, doi = {10.1109/TSG.2018.2829438}, url = {https://ieeexplore.ieee.org/document/8345197/}, author = {Du, Wei and Lasseter, Robert H. and Khalsa, Amrit S.} } @conference {2466, title = {Overload mitigation control of droop-controlled grid-forming sources in a microgrid}, booktitle = {2017 IEEE Power \& Energy Society General Meeting (PESGM)}, year = {2017}, month = {07/2017}, publisher = {IEEE}, organization = {IEEE}, address = {Chicago, IL, USA}, abstract = {

The droop-controlled grid-forming sources are well known for robust voltage and frequency control and the ability to balance power between multiple sources in a microgrid. However, these sources may become overloaded with the possibility of collapsing the microgrid. This paper presents an overload mitigation control strategy which can autonomously transfer the extra load of the overloaded source to other sources without communications. The main advantages of this control strategy are that it maintains voltage control of the overloaded sources and does not need to switch between grid-forming control and grid-following control. A small signal model is established to study the system stability. Simulation and on-site test results verify the effectiveness of this control strategy.

}, doi = {10.1109/PESGM.2017.8274300}, url = {http://ieeexplore.ieee.org/document/8274300/http://xplorestaging.ieee.org/ielx7/8263544/8273724/08274300.pdf?arnumber=8274300}, author = {Du, Wei and Lasseter, Robert H.} } @article {1403, title = {Voltage-Source Control of PV Inverter in a CERTS Microgrid}, journal = {IEEE Transactions on Power Delivery}, volume = {29}, year = {2014}, month = {08/2014}, pages = {1726 - 1734}, abstract = {Microgrids are highly compatible with photovoltaic (PV) sources because of their ability to internally aggregate and balance multiple renewable sources. Traditional grid-connected PV inverter control configurations are basically current sourced and cannot easily control ac voltage or frequency. The PV inverter using the Consortium for Electric Reliability Technology Solutions (CERTS) concepts can control ac voltage and frequency but have a major problem with load transients. During a load transient, the PV microsource becomes overloaded with the possibility of collapsing the dc bus voltage resulting in an ac voltage drop. This paper presents a PV inverter control strategy which enables PV to behave as a voltage source and is capable of maintaining dc bus voltage stability during load transient. With this PV inverter control configuration, it is shown that the PV microsource can operate as a voltage source in the CERTS microgrid.}, keywords = {CERTS, MG-TB003, microgrid concept, microgrid test bed, microgrids}, issn = {0885-8977}, doi = {10.1109/TPWRD.2014.2302313}, author = {Du, Wei and Jiang, Qirong and Micah J. Erickson and Robert H. Lasseter} }