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Interpreting terminal selectivity in undirected C(sp³)-H functionalization: kinetic insights and mechanistic implications. [PDF]

Chem Sci
Tu JL, Guo L, Huang B, Xia W.
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Coordination of over-current relays for cascaded parallel feeder

7th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2006), 2006
This paper presents an idea of the relay coordination for cascaded parallel feeders fed from both ends as if it were a part of the interconnected power system. The criterion for setting of the relays in radial feeder is not exactly applicable to the parallel feeders fed from both the ends.
B.A. Oza, B. Bhalja, P.H. Shah
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Application of the Firefly algorithm to optimal over-current relay coordination

2014 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), 2014
Optimization of over current relay settings is a major problem in protection of electrical power systems. This paper describes the Firefly algorithm for optimal time coordination of these relays. The algorithm has been implemented in MATLAB and tested on a radial system, as well as a single end fed system with a parallel feeder. The results obtained by
S. S. Gokhale, V. S. Kale
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Optimal coordination of distance and over-current relays using ICA

2014 19th Conference on Electrical Power Distribution Networks (EPDC), 2014
Coordination of different relays in transmission systems is an important issue in relays application. In this paper, the over-current and distance relays are coordinated through the Imperialist Competitive Algorithm (ICA) considering time setting multiplier (TSM) and pickup current of the relays.
M. Rahmatian, M. H. Pourarab, M. Gholami, G. B. Gharehpetian   +3 more
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Optimal coordination of over-current relays using differential evolution

2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2012
In this paper, the study of optimal coordination of directional over-current relays is proposed. The relay coordination problem is non-linear. It typically consists of two groups of control variables (Time Dial Setting: TDS and Plug Setting: PS). The objective function used is the operation time of the main relay in all considered fault cases.
Somboonsup Rodporn, Thanatchai Kulworawanichpong, Anant Oonsivilai, Dusit Uthitsunthorn, Ratchadaporn Oonsivilai   +4 more
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Optimal coordination of over-current relay with Distributed Generation consideration

2011 International Conference on Advanced Power System Automation and Protection, 2011
Utilizing Distributed Generation (DG) is greatly increasing in recent years. This is mostly because of simple installation, environmental effects and loss reduction due to closeness to the load centers. However, DG installation, especially in distribution networks, raises some problems. One of these problems is over-current (OC) relays coordination. In
Mehdi Maleknia, null Hossein Kazemi Karegar   +1 more
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Optimal coordination of over-current relays using modified differential evolution algorithms

Engineering Applications of Artificial Intelligence, 2010
Optimization of directional over-current relay (DOCR) settings is an important problem in electrical engineering. The optimization model of the problem turns out to be non-linear and highly constrained in which two settings namely time dial setting (TDS) and plug setting (PS) of each relay are considered as decision variables; the sum of the operating ...
Radha Thangaraj, Millie Pant, Kusum Deep
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Effect of fault location on optimal coordination of directional over current relay

TENCON 2008 - 2008 IEEE Region 10 Conference, 2008
The objective of optimal relay coordination in interconnected power system is to achieve selectivity without sacrificing sensitivity & fast fault clearance time. This paper presents the effect of fault location on the flow of current direction & optimal coordination of directional over current relay. In this coordination problem Time Dial Setting (TDS)
Chetan Aggarwal, H.A. Mangalvedekar, H.B. Chaudhari   +2 more
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Optimized over-current relay coordination using Flower Pollination Algorithm

2015 IEEE International Advance Computing Conference (IACC), 2015
The main purpose of optimization of relay coordination in an extensively large electrical network is to enhance the selectivity and at the same time reducing the fault clearing time to improve reliability of the system. The relays provided are set to function properly in normal as well as abnormal condition. In this paper; the main focus is to find out
Indrajit N. Trivedi, Snehal V. Purani, Pradeep K. Jangir   +2 more
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Optimail strategy for Over Current relay coordination using Genetic Algorithm

2014 International Conference on Engineering and Technology (ICET), 2014
In conventional methods coordination of Over Current relays (OCR) is obtained through careful time grading. Due to the expansion of electric systems, the need for an efficient coordinated protective system is crucial. The optimal time for protection given the coordination problem turned to be little complex to be calculated. To solve the problem of the
Rania A. Swief, Almoataz Y. Abdelaziz, A. Nagy   +2 more
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