A new approach of Mho distance relay for Transmission line protection

2nd International Conference on Sustainable Engineering Techniques

工业技术（总论）

Ahmed, Abdullah Hamed^1 ; Sultan, Ahmed Jasim^1

Electrical Power Engineering Techniques Dept., Electrical Technical College, Middle Technical University, Baghdad, Iraq^1

关键词: Distance relay;    Fuzzy logic methodology;    MATLAB/ SIMULINK;    Measured voltages;    MHO distance relays;    New approaches;    Power system networks;    Transmission line protection;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/518/4/042027/pdf
DOI  :  10.1088/1757-899X/518/4/042027

学科分类：工业工程学

来源: IOP

【 摘 要 】

The protection of transmission line is one of the important requirements of the modern power system network to protect the equipment and persons work on it. distance relay is one of the relays used to protect the transmission line where the input to the fuzzy based distance relay are the resistance and reactance of transmission line from relay to the fault location. These were calculated from the measured voltage and current. Mho type distance relay is proposed by using fuzzy logic methodology to protect the transmission line and to defeat under and over-reach problems. MATLAB-Simulink is used to model the relay and the test network, where the fault type is detected and four zones of fault location are provided, the trip signal is delayed according to the zone number. Also the (R-JX) plain is used to show the zone of fault in a simplified manner.