Open AccessValuing consumer participation in security enhancement of microgrids
Author(s) -
Hashemi Seyed Mohsen,
Vahidinasab Vahid,
Ghazizadeh Mohammad Sadegh,
Aghaei Jamshid
Publication year - 2019
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2018.6321
Subject(s) - islanding , economic shortage , sensitivity (control systems) , reliability engineering , computer science , oscillation (cell signaling) , environmental science , automotive engineering , engineering , distributed generation , electrical engineering , electronic engineering , renewable energy , linguistics , philosophy , government (linguistics) , biology , genetics
This study proposes a time‐based security (TBS) evaluation mechanism for radial microgrids (MGs) short‐term operation. In the proposed framework, system security is modelled using time‐based sensitivity analysis in the load points. Occurring branch contingencies in a radial MG creates some islands with oscillating frequencies. The settling time of frequency oscillation, as the successful islanding time, and the island's capability to continue the load supply are considered in TBS assessment. A system frequency response model and the stored energy of storages are used to calculate the two mentioned factors. Depending on the loads’ sensitivities to the successful islanding time and the service continuity duration, they are exposed to extreme damage. In the case of branches’ sudden outages, it may be impossible to operate the MG without any extreme damage of loads, due to the capacity shortage in the island, dynamic behaviours of the MG and inadequate stored energy of storages. Under these conditions, the load shedding unit participates considering the customer damage function. To evaluate the performance of the proposed security assessment mechanism, the 123‐bus distribution test system is precisely analysed.