Digital Protection of Power Systems Research Papers (original) (raw)
— This project implements the function of wireless car security system using RFID. An ATMEGA8 microcontroller, RFID reader, RFID tag is used for the smooth implementation of the scheme. The ATMEGA8 microcontroller was used to serve as the... more
— This project implements the function of wireless car security system using RFID. An ATMEGA8 microcontroller, RFID reader, RFID tag is used for the smooth implementation of the scheme. The ATMEGA8 microcontroller was used to serve as the entire control of the system which holds the unique RFID card number and controls the system as a whole. A driver is used to secures the car ignition system, and the buzzer was used to alert the vehicle owner whenever there is an intrusion attempt. Consequently, with this kind of system, the security of our automobiles can be more sensitive to secure and protect our vehicles more from any intrusion and theft in electronic-based approach.
Bu çalışmada güç koruma rölelerinin teknolojideki ilerlemelere bağlı olarak gelişimi ele alınmaktadır. 1900 yılların başlarından buyana koruma röleleri, farklı özellikler kazanmakta ve sorunların yeni etkili çözümleri olmaktadır.... more
Bu çalışmada güç koruma rölelerinin teknolojideki ilerlemelere bağlı olarak gelişimi ele alınmaktadır. 1900 yılların başlarından buyana koruma röleleri, farklı özellikler kazanmakta ve sorunların yeni etkili çözümleri olmaktadır. Günümüzde dijital röleler, endüstriyel ve ticari tesisler başta olmak üzere birçok elektrik güç sisteminde kullanılmaktadır. Bundan dolayı bu çalışmada “Niçin dijital röle tercih edilmektedir?” sorusunun cevabı, diğer röle türleri ile karşılaştırmalar yaparak ve dijital rölenin ön plana çıkan özellikleri ortaya koyularak aranmaktadır.
This paper presents the application of the multi-frame digital interconnection protection for co-generation systems. The multi-frame digital interconnection protection is constructed from two frequency frames, one frame to detect... more
This paper presents the application of the multi-frame digital interconnection protection for co-generation systems. The multi-frame digital interconnection protection is constructed from two frequency frames, one frame to detect islanding events and the other frame to detect faults on either side of the point-of-common-coupling (PCC). Islanding events are detected based on the wavelet packet transform high frequency sub-band, which is extracted from the d-q-axis components of the instantaneous 3φ apparent powers determined at PCC. The detection of faults, on either side of PCC, is achieved by extracting the magnitudes and phases of the high frequency contents present in PCC currents. The high frequency contents present in PCC currents are extracted by a phaselet filter bank that is composed of 6 digital high pass filters. The multi-frame digital interconnection protection is experimentally tested on a 3.6 kVA co-generation system for islanding events, different faults on both sides of PCC, and non-transient conditions. Test results demonstrate the ability of the proposed interconnection protection to initiate accurate, fast, and reliable responses to various types of transient disturbances.