Results 231 to 240 of about 8,627 (281)

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Optimal Coordination of Dual Setting Directional Over Current Relays in Microgrid With Different Standard Relay Characteristics

2020 IEEE 9th Power India International Conference (PIICON), 2020
In the presence of distributed generation (DG), the fault current through the relay in forward direction is higher as compared to reverse direction. Thus it is desirable to have dual setting directional over current relay (DOCR) which can operate for both forward and reverse direction of fault current with two independent relay settings.
Raghvendra Tiwari, Ravindra Kumar Singh, Niraj Kumar Choudhary   +2 more
openaire   +1 more source

An Adaptive Centralized Protection and Relay Coordination Algorithm for Microgrid

Energies, 2023
To meet the increased customer demands, microgrid evolved. The structure of microgrid changes dynamically due to the intermittent nature of renewable-based generation, status of the distributed generator and opening of breakers for fault/maintenance ...
Regin Bose Kannaian, Raja Prabu Ramachandran, Belwin Brearley Joseph   +2 more
exaly   +2 more sources

Application of linear programming for optimal coordination of directional over-current relays

2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2012
In this paper presents an algorithm for directional over-current relay coordination based on linear programming. The relays are configured by adjusting time dial setting (TDS) of function properly in normal and fault conditions. The TDS adjustment is performed by using linear programming.
Supawatchara Niyomphant, Uthen Leeton, Thanatchai Kulworawanichpong, Nimit Chomnawang   +3 more
openaire   +1 more source