Abstract This paper designs an intelligent protective circuit breaker, which can monitor the leakage, voltage, current, temperature, and other parameters in user’s line real-time through built-in electric energy metering module, temperature sensors, alarm according to set threshold. It give early warning about dangerous situation advance. At same time, it upload cloud platform wireless communic...

This paper presents a comparative study of the performance of distance relays for transmission line high voltage (HV) 400 kV in Eastern Algerian transmission networks at Group Sonelgaz compensated by two different series Flexible AC Transmission System (FACTS) i.e. GTO Controlled Series Capacitor (GCSC) and Thyristor Controlled Series Capacitor (TCSC) connected at midpoint of an electrical tran...

A circuit breaker may be considered an ‘active link’, used to make and break an electrical circuit under conditions of varying severity. In the event of a circuit fault the circuit breaker must respond within tens of milliseconds in order to prevent damage to connected plant and safeguard personnel. As such, a circuit breaker will remain idle for the bulk of its lifetime, only being called into...

To solve the problem of high rising rate and large peak value expected current short-circuit in marine DC power system faults, a hybrid limiting circuit breaker scheme based on high-speed electromagnetic repulsion mechanism is proposed. A parameter selection model constructed by comprehensively considering short-time withstand thyristor, volume commutation circuit, capacitor energy, optimal par...

High-voltage circuit breakers are mechanical switching devices which connect and break current circuits (operating currents and fault currents) and carry the nominal current in closed position. As a result of multi-running, the shaft sleeve in operation mechanism could slip and even strip from the shaft at the hinge joint, which decreases the system reliability. In this work, investigations on ...

Abstract: The application of electric field theory to widely different aspects of electrical insulation has led to more understanding the phenomena. Electric fields may be considered as the main reason for insulation failure. The purpose of this paper is to modify importance of analyzing electric field in insulation design. The SF6 circuit breaker is chosen as case study that encounters cri...

To promote the integration of renewable energy resources into modern systems, high-voltage dc (HVdc) and circuit breaker (CB) technologies have become critical to achieving secure efficient transmission. This article reviews technical development related areas, compares diverse concepts topologies, investigates possible coordination testing solutions, points out remaining challenges as well fut...

In this article, an innovative supervision system will be proposed that can observe and analyze health of Circuit Breaker’s trip coil. The proposed design also logs changes in the coil's quality and informs network supervisor in case of Circuit Breaker (CB) failure. This system injects small direct currents to the Circuit Breaker connections and the trip coil to compute CB’s health and characte...