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An Adaptive Grounding Scheme for Synchronous Based DG to Prevent the G by Muhammad Yousaf, Amin Jalilian et al

Abstract Large fault currents in a synchronous-based distributed generator (SBDG) can cause serious damage to the core and windings of the generator. This paper proposes an adaptive grounding scheme to limit the ground fault currents to a safe level. To do so, a high impedance grounding configuration is designed to operate during the grid-connected mode to minimize damage to the generator during ground faults. An electronic switching mechanism is provided to identify the islanded mode of operation. This switching operation strategy will modify the grounding system to the low-impedance configuration during the islanded-mode of operation of the SBDG to ensure the steadfast operation of the overcurrent protection (OCP) relays to prevent the nuisance tripping by the protective devices. Furthermore, the schematic diagram of the proposed grounding configuration has been presented and discussed to ensure the safe decay of the generator field current during ground faults in the generator zo

Circuit faultsDistribution networkAult currentsRound faultsIgh impedance groundingOw impedance groundingOvercurrent protection

A Control Strategy to Mitigate the Sensitivity Deterioration of Overcu by Muhammad Yousaf, Kashem M Muttaqi et al

Abstract This research article focuses on the indeterminate protection challenge of the sensitivity deterioration (SD) (also known as protection blindness) of the overcurrent protection (OCP) devices due to the large-scale integration of distributed energy resources (DERs) in the unbalanced distribution networks (DNs). The protection blindness of the OCP has been demonstrated through novel mathematical formulations to quantify the percentage of the sensitivity deterioration for different types of distributed generation (DGs) units and for the varying DG penetration levels. Furthermore, this issue has been realistically analyzed for the different fault impedances and DG locations to examine its impact on the existing OCP system. A mitigation strategy has been proposed to overcome the SD issue of the OCP protective devices (PDs) for a steadfast operation of the OCP devices without requiring costly upgradations of the protection system. This protection blindness issue has been explored

Circuit faultsDistributed generationDistribution networksAult currentsAult studiesOvercurrent protectionRotection blindnessProtective devices

New high-temperature rated polymer PTCs deliver low resistance

New high-temperature rated polymer PTCs deliver low resistance
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Global Circuit Protection Market to 2026 – Industry Perspective, Comprehensive Analysis, and Forecast – KSU

deepakFebruary 2, 2021 7 “Global Circuit Protection Market Research Report Along with Leading Players, Revenue, Production Techniques, Business Overview, Forecasted to 2026” The Global “ Market 2021″ report is a meticulous study of the global Circuit Protection market portraying the state-of-the-art details in the market. It also predicts its growth in the next few years. The Circuit Protection report evaluates various aspects that determine the growth as well as the volume of the global Circuit Protection market. Additionally, it presents a determined business outlook of the market along with a summary of some of the leading market players. In this report, the global Circuit Protection is valued at USD XX million in 2017 and is expected to reach USD XX million by the end of 2026, growing at a CAGR of XX% between 2020 and 2026.

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Polymer PTC products meet protection requirements for higher current

Polymer PTC products meet protection requirements for higher current Bourns has announced the expansion of its line of Multifuse high-temperature rated surface mount PPTC resettable fuse products. The new Bourns Multifuse MF-FSHT model family is created to deliver effective overcurrent protection in applications with higher ambient operating temperatures while also lowering the risk of generating nuisance tripping at elevated temperatures between 85C and 125C. These abilities are especially valuable in applications that regularly encounter elevated ambient temperatures, including, but not limited to industrial equipment, outdoor security systems and computing/storage devices. The new family is offered in a small EIA 0603 footprint, and further expands the company s leading line of high-temperature rated polymer PTCs that contain the radial leaded MF-RHT model family and the surface mount MF-SMHT, MF-USHT, MF-NSHT and MF-PSHT model families.

Lee bournsBourns multifuseOvercurrent protectionலீ பெர்ன்ஸ்