With the increase of distributed energy resources (DERs) and automated switchgear in distribution networks, sectionalizing distribution networks (SDNs) can be created. Parts of SDNs can be operate in islanded mode when a fault occurs in the network, to continuously supply load with local DERs. Transient stability is a challenge in SDNs due to the fault ride-through, islanding transient and switching between grid-feeding and grid-supporting control modes of DER inverters. To analyze the transient behavior of such control mode switching inverters (CMSIs), a detailed model is created in Simulink and several fault, islanding and control mode switching simulations are performed. The impact of fault clearing time, fault impedance, fault distance, load characteristics, droop constants and grid-feeding power reference values is determined with simulations. From the simulations, the potential problems for the operation of SDNs are identified. Finally, some recommendations for future research are given to improve the transient behavior of CMSIs.
|Title of host publication||2018 International Conference on Power System Technology, POWERCON 2018 - Proceedings|
|Place of Publication||Piscataway|
|Publisher||Institute of Electrical and Electronics Engineers|
|Number of pages||8|
|Publication status||Published - 3 Jan 2019|
|Event||2018 International Conference on Power System Technology, POWERCON 2018 - Guangzhou, China|
Duration: 6 Nov 2018 → 9 Nov 2018
|Conference||2018 International Conference on Power System Technology, POWERCON 2018|
|Period||6/11/18 → 9/11/18|
- sectionalizing distribution networks
- transient stability.
- voltage source inverter