Results 11 to 20 of about 140 (105)
Energy Science &Engineering, Volume 11, Issue 11, Page 4108-4127, November 2023., 2023 The use of distribution generators affects fault currents, leading to miscoordination between protection relays and causing constraints on network reliability. To tackle this issue, an adaptive protection scheme (APS) based on a modified pelican optimization algorithm (MPOA) and active database management system is proposed.
Mohamed Abdelhamid +2 more
wiley +1 more source
IET Generation, Transmission &Distribution, Volume 17, Issue 9, Page 2169-2181, May 2023., 2023 • Sitting and sizing of synchronous distributed generations (SDGs) in the distribution network (DN) constrained to maintain the protection coordination of overcurrent relays (OCRs), • Simultaneous modelling of operation, voltage security, economic and protection coordination indices in the planning of SDGs in the DN,• Eliminating the protection re ...
Hossien Shad +2 more
wiley +1 more source
IET Generation, Transmission &Distribution, Volume 17, Issue 8, Page 1827-1835, April 2023., 2023 This paper is aimed at recloser‐fuse protection in CESS employed multi‐microgrid distribution systems for improving the fuse saving task and mitigating the fault resistance effects. In this way, after applying the conventional recloser‐fuse protection scheme, a new scheme is presented to improve the performance of the system in presence of CESS and ...
Amin Yazdaninejadi, Hossein Ebrahimi
wiley +1 more source
A probabilistic approach for optimal operation of wind‐integrated power systems including UPFC
IET Renewable Power Generation, Volume 17, Issue 3, Page 706-724, 24 February 2023., 2023 Abstract The optimal location and setting of the unified power flow controller (UPFC) along with power plant generators' output parameters to enhance power systems reliability in the presence of uncertain variables are determined in this paper. For this purpose, the expected power not served (EPNS) is used as a reliability index based on the total ...
Saeed Rezaeian‐Marjani +4 more
wiley +1 more source
Low Computational Burden Adaptive Overcurrent Protection for Active Distribution Networks
International Transactions on Electrical Energy Systems, Volume 2023, Issue 1, 2023., 2023 Conventional distribution networks have evolved into active distribution networks due to the high penetration of distributed energy resources. These new networks have several protection issues; some are related to the high fault and load current variations due to the various operating conditions.
B. Grisales-Soto +3 more
wiley +1 more source
IET Generation, Transmission &Distribution, Volume 16, Issue 24, Page 5084-5116, December 2022., 2022 Abstract Much attention has been paid to optimizing smart grids (SGs) and microgrids (MGs) protection schemes. The SGs’ operation in different operating modes (especially grid‐connected and islanded conditions) and various system configurations (such as the outage of each of the distribution generations) adversely influence the protection system.
Amir Hossein Ataee‐Kachoee +2 more
wiley +1 more source
IET Renewable Power Generation, Volume 16, Issue 11, Page 2313-2337, 17 August 2022., 2022 Abstract The optimized protective systems for smart grids and microgrids have received much attention in recent years. However, besides other selectivity constraints, less attention has been paid to synchronous generators’ stability concerns. The stability challenges are intensified in meshed grids compared to radial configurations.
Hamidreza Aghaei, Hamed Hashemi‐Dezaki
wiley +1 more source
IET Renewable Power Generation, Volume 16, Issue 11, Page 2338-2356, 17 August 2022., 2022 Abstract This paper presents economic planning of synchronous distributed generations (SDGs) constrained to protection and operation indices in the distribution network. The proposed scheme has a two‐stage formulation. In the first stage, optimal protection coordination (OPC) is modelled in the first phase in a network without SDGs.
S. Mohsen Sadeghi +2 more
wiley +1 more source
Complexity, 2018 This paper presents the solution of directional overcurrent relay (DOCR) problems using Simulated Annealing based Symbiotic Organism Search (SASOS). The objective function of the problem is to minimize the sum of the operating times of all primary relays.
Muhammad Sulaiman +3 more
doaj +1 more source
IEEE Access, 2019 The model of directional over current relays (DOCRs) coordination is considered as an optimization problem. It is generally formulated as linear programming (LP), non-linear programming (NLP) and mixed integer non-linear programming (MINLP), according to
Jiangtao Yu +2 more
doaj +1 more source