Open AccessImpact analysis of recovery ramp rate after momentary cessation in inverter‐based distributed generators on power system transient stability
Author(s) -
Kang Sungwoo,
Shin Heewon,
Jang Gilsoo,
Lee Byongjun
Publication year - 2021
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/gtd2.12004
Subject(s) - electric power system , transient (computer programming) , inverter , control theory (sociology) , power (physics) , wind power , computer science , photovoltaic system , stability (learning theory) , engineering , voltage , electrical engineering , control (management) , physics , quantum mechanics , artificial intelligence , machine learning , operating system
The global increase in the use of solar photovoltaics and wind turbines has led to a rapid increase in the penetration level of inverter‐based distributed generators (IBDGs). Until recently, the operation modes of IBDGs under abnormal power system conditions were not a major concern owing to the small number of IBDGs used in power systems. However, several events have indicated that the momentary cessation (MC) mode of an IBDG can eventually deteriorate the stability of power systems. Among the various parameters that define the MC mode, the direct impact of the MC recovery ramp rate on the transient stability of the power system has been addressed by computing the stability margin based on a single machine equivalent method. Furthermore, this paper introduces the critical momentary cessation recovery ramp rate for a specific system, which can be used as an important index in the planning of an IBDG installation. Case studies on modified IEEE 39 bus system and Korean power system were conducted to validate the effectiveness of the proposed method.