In this paper we develop monitoring schemes that are able to detect and identify failures in power transmission lines by analyzing binary status information from relays and circuit breakers. The approach, which is based on Petri net models, requires very simple calculations (linear checks) during execution time and allows for concurrent/incremental processing of the information as it arrives at...

High Voltage Direct Current (HVDC) circuit breakers have to suppress high values of currents at high voltages in absence of current-zero points. This makes the arc interruption more severe than the case of conventional AC networks. For circuit breaking in HVDC networks, a capacitor-inductor set has been inserted in parallel with the circuit breaker to inject reverse current to the interruption ...

VAR support should be supplied as close to the load as possible to minimize transmission losses. For voltage control and for improvement of total power factor in a distribution system the circuit- breaker switched capacitor banks can be used. The problems with this solution are the voltage steps caused by the large sizes of the capacitor banks as well as the transients caused on insertion. Thyr...

Due to the stunning advancement of power electronics, DC system is getting immense attention in field research. Protection and hereafter protective devices for application are two vital areas that need be explored developed further. Designing a device such as circuit breaker possesses lot challenges. The main challenge interrupt current which does not have natural zero crossing like AC has. In ...

In recent years, DC power supply and distribution technology plays an increasingly significant role in systems with a low loss large radius. However, the corresponding network protection electric devices cannot satisfy needs of existing network. Based on this, this article, intelligent/energy-efficient leakage circuit breaker based two-phase magnetic nanomaterials detection control is proposed....

The electricity distribution breakdown can be caused the service life and operating frequency of Oil Dielectric Strength (ODS). Hence, it requires a study due to spare part is difficult find. This paper aims test ODS on Circuit Breaker (OCB) 13.8 kV aged between 29 43 years. used ASTM D1816 standard analyze effect oil circuit breaker physical, color strength ODS. For visual D1524 standard. base...

This paper aims to evaluate important factors that affect switching transients overvoltages during transmission line energization. These factors include the number of repetitions to ensure the statistical characteristic of the study, the variation range of the mean closing time of the circuit breaker contacts, the model used for the representation of the transmission line and the influence of t...