The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
One of the major challenges faced in the design of DC shipboard power systems (SPS) is the provision of effective DC protection. The selection of the current sensors plays an important role in the detection of fault current in DC systems. The Rogowski coil has emerged as a popular choice of current sensor for use in DC SPS protection system primarily because of its fast response and non-saturable...
The detection and isolation of short circuits within the MV networks can be improved by the installation of disconnectors together with short-circuit flow passage indicators (FPI) inside the network. The proposed further improvements of FPI operation based on the change of operating criterion to the admittance one and the installation of zero-sequence resistive current forcing system (AWSCz). The...
Robust management of short-circuit faults in MVDC systems must rely on a combination of communication-dependent and communication-independent methods. In one approach, an MVDC system is designed to operate without breakers [1], so both methods rely on coordinated control of power converters and non-fault-breaking mechanical disconnect switches to effect the fault clearance process-fault detection...
One of the more difficult problems to solve in industrial plants is to locate and eliminate a ground fault in High Resistance Grounding (HRG) system. This is because ground fault conditions in these systems do not draw enough current to reliably trip the ground fault current detector in the drive. This paper studied the ground fault identification (GFI) using voltage measuring method for multiple-drive...
Arc-flash protection systems have evolved over the past decade with a range of solutions from arc-resistant gear to circuit breaker temporary instantaneous settings. One technology that has gained acceptance, especially in medium voltage applications is light sensing as applied in arc-flash relays. Recently, arc flash relays have moved into low voltage applications. While light based arc flash relays...
Technology scaling has changed the Static Random Access Memory (SRAM) test scenario, leading to an insufficiency of the usually adopted functional fault models. In this sense, these fault models are no longer able to correctly reproduce the effects caused by some defects generated during the manufacturing process. In this paper, we investigate the possibility of using Built-In Current Sensors (BICSs)...
The power distribution equipment, the key equipment in certain unmanned aerial vehicle (UAV), is in charge of the power distribution management and the signal conversion of airborne sensors, and must be comprehensively tested before the trial flight of UAV to ensure the flight safety. The automatic test method for the equipment is researched and an automatic test system is developed to meet the test...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.