Optimal Overcurrent Relay Coordination: A Review

Hussain, M. H.; Rahim, Siti Rafidah Abdul; Musirin, Ismail

doi:10.1016/j.proeng.2013.02.043

Cited by 96 publications

(67 citation statements)

References 33 publications

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“…These methods, from older to newer ones, are classified into three main classes including trial and error methods, topological analysis methods and optimal coordination methods [3]. Many optimization techniques, from a simple linear programming to most modern artificial intelligence and nature inspired algorithms, have been applied to solve the optimal coordination problem of the OCRs [3]. However, the coordination methods have usually been applied to OCRs with standard time-current characteristics, so, they suffer from following drawbacks:…”

Section: ) Inverse-time Ocrs In Which a Time Dial Setting (Tds)mentioning

confidence: 99%

Piece–wise Linear Characteristic for Coordinating Numerical Overcurrent Relays

Ojaghi

Ghahremani

2017

IEEE Trans. Power Delivery

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Overcurrent relays are the most economical protective relays that are used as main/backup protection in distribution networks and as backup protection in transmission and sub-transmission networks. The most effective overcurrent relays have inverse time-current characteristics such as Standard (Normal) Inverse (SI) characteristic, Very Inverse (VI) characteristic and Extremely Inverse (EI) characteristic. Lately, the use of numerical protective relays is considered due to their programmable functionality, greater flexibility, higher speed and accuracy. Numerical overcurrent relays usually allow the users to define and setup arbitrary time-current characteristics. This paper aims to develop a new time-current characteristic to be used in numerical overcurrent relays to overcome some drawbacks of the conventional characteristics. This characteristic curve is constructed by connecting successive straight lines and can easily be tabulated to write to the numerical relays.

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Section: ) Inverse-time Ocrs In Which a Time Dial Setting (Tds)mentioning

confidence: 99%

Piece–wise Linear Characteristic for Coordinating Numerical Overcurrent Relays

Ojaghi

Ghahremani

2017

IEEE Trans. Power Delivery

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“…Below In power systems, all of these OCRs m coordinated with each other in order to pr elements from the currents. To do so, the OCRs, which are the Plug Setting Multip the Time Setting Multiplier (TSM), must PSM is varied in the range of 50% to 200% 25% [7]. This setting is only used for inver which detect phase to phase fault.…”

Section: Overcurrent Relaymentioning

confidence: 99%

Coordination of overcurrent relays protection systems for wind power plants

Rezaei

Othman

Wahab

et al. 2014

2014 IEEE International Conference on Power and Energy (PECon)

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Wind farms are one of the most indispensable types of sustainable energies which are progressively engaged in smart grids with tenacity of electrical power generation predominantly as a distribution generation system. Thus, rigorous protection of wind power plants is an immensely momentous aspect in electrical power protection engineering which must be contemplated thoroughly during designing the wind plants to afford a proper protection for power components in case of fault occurrence. The most commodious and common protection apparatus are overcurrent relays which are responsible for protecting power systems from impending faults. In order to employ a prosperous and proper protection for wind power plants, these relays must be set precisely and well coordinated with each other to clear the faults at the system in the shortest possible time. This paper indicates how the coordination of overcurrent relays can be effectively attained for wind power plants in order to protect the power constituents during fault incidence. Through this research Matlab/Simulink as a powerful simulation software have been applied to model a wind farm and achieve precise setting for coordination of overcurrent relays.

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“…To do so, the vital settings of OCRs, which are the Plug Setting Multiplier (PSM) and the Time Setting Multiplier (TSM), must be set suitably. PSM is varied in the range of 50% to 200% and in steps of 25% [9]. This setting is only used for inverse current relays which detect phase to phase fault.…”

Section: Overcurrent Relaymentioning

confidence: 99%

Wind Power Plants Protection Using Overcurrent Relays

Rezaei¹,

Othman²,

Wahab³

et al. 2014

ujeee

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Wind power plants are one of the most crucial types of renewable energies which are increasingly employed in smart grids with purpose of power generation especially as a distribution generation system. Hence, the proper protection of wind plants is an enormously significant aspect which must be taken into consideration when designing the wind plants to not only provide a suitable protection for the power components but also maintain the power generation perpetually in case of fault. The most important and common protection systems are overcurrent relays which can protect the power systems from impending faults. In order to implement a successful and proper protection for wind power plants, these relays must be set accurately and well coordinated with each other to clear the fault at the system in the shortest possible time. This paper demonstrates how the coordination of overcurrent relays can be successfully achieved in wind power plants in order to maintain the power generation during fault and protect the power components.

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Optimal Overcurrent Relay Coordination: A Review

Cited by 96 publications

References 33 publications

Piece–wise Linear Characteristic for Coordinating Numerical Overcurrent Relays

Piece–wise Linear Characteristic for Coordinating Numerical Overcurrent Relays

Coordination of overcurrent relays protection systems for wind power plants

Wind Power Plants Protection Using Overcurrent Relays

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