Universiti Teknologi Malaysia Institutional Repository

CT compensation of numerical distance relaying algorithm

Mohd. Zin, Abdullah Assuhaimi and Ismail, Nur ‘Ain Maiza and Muda, Zaniah and Jalalian, Mohamad (2009) CT compensation of numerical distance relaying algorithm. International Journal of Electrical & Computer Sciences (IJECS), 9 (9). pp. 31-37. ISSN 2077-1231

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In this paper a prototype algorithm for Numerical Distance relay is developed in order to prevent maloperation of relays when Current Transformer (CT) saturation occurs. Saturation of CT causes errors in reproduction of the current fundamental harmonic. The design of CT(s), which never saturate would end in bulky and expensive units. Therefore most of the protective CTs that are in service saturate during severe transients. Distorted secondary current due to CT saturation is detected and compensated by the algorithm in order to obtain correct operation of Distance relay in saturation area. Thirddifference function and Auto Regressive (AR) model are employed in developing the saturation detection and compensation algorithm. The algorithm is developed using C++ language. Then the performance of the algorithm is evaluated through simulation of case studies in Alternative Transient Program (ATP) simulator. Finally, the Numerical Distance Relaying algorithm with CT saturation compensation is successfully developed

Item Type:Article
Uncontrolled Keywords:numerical distance relay, CT saturation, CT compensation, ATP
Subjects:T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:11842
Deposited By: Siti Anisa Abdul Hamid
Deposited On:21 Jan 2011 10:23
Last Modified:22 Feb 2017 03:59

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