Concerning the distance protection steady-state over-reach or under-reach caused by transition resistance, a novel scheme based on transient information is proposed. First, multiple fault features are extracted using Generalized Stockwell Transform (GST), and criterion for identifying low-resistance high-resistance ground faults constructed. Then, GST coefficient matrix established single-ended...

The introduction of “smart” tracer techniques in recent years has provided new ways to investigate sediment-water interactions and microbial activity stream corridors. In this study, the formulation STIR model (Marion et al., 2008) is extended represent transport transformation Resazurin-Resorufin smart tracers, an object-oriented toolbox, STIR-RST, presented for evaluation calibration. STIR-RS...

This paper proposes a decentralized control approach using co-simulation platform to monitor protective elements and provide complete protection scheme for distribution systems. Real time measurements are obtained by interfacing the system model in RSCAD/RTDS with SEL 421 relays publish/subscribe voltage current signals of buses transmission lines based on IEC 61850 communication protocol isola...

The fault of the tie line between photovoltaic (PV) station and grid is a serious for PV station. It will cause to operate into an unintentional island. uncontrolled Island voltage frequency inevitably lead disconnection inverter in This situation bring great losses operators impact power grid. In order deal with fault, this paper analyzes operation characteristics stations case firstly. Then r...

This paper presents a synchronverter based photovoltaic (PV) system as STATCOM (PV-STATCOM), in which inverter exchanges active and reactive power with the grid. The proposed provides compensation during daytime well nighttime. Additional operating modes for PV-STATCOM are to enhance its capability. controller is compared conventional control on basis of performance different tests. key differe...

Abstract The access to distributed power sources such as small hydropower (SHP) makes the distribution system present a multi-power supply pattern, which has an adverse impact on voltage-time type feeder automation (VTFA) suitable for one-side system. In view of this influence, paper proposes new terminal unit (FTU) VTFA, energy processing mode. mode, in case phase-to-phase short-circuit fault ...

This paper describes Krško experience and problems that had to be resolved with RTD Bypass Elimination project (RTDBE). Following bypass manifold isolation valve leak in 2008, decided perform RTDBE modification on reactor coolant system narrow range temperature measurement system. The installation was performed during Outage 2013. Soon after the plant returned power, newly configured channels s...

The conventional Under Frequency Load Shedding (UFLS) scheme could result in unacceptably low frequency nadirs or overshedding power systems with volatile inertia. This paper proposes a novel UFLS for modern whose inertia may vary wide range due to high penetration of renewable energy sources (RESs). proposed estimates the rate change (RoCoF) center (CoI), and consequently, loss generation (LoG...

Detailed knowledge of the dynamic interactions between incoming sewerage and an overflowing manhole, resulting pollutant concentrations from manhole flooding, are critical for robust design operations wastewater infrastructures, especially during extreme climatic events. This study investigates mixing dispersion solute in square overflow using laboratory tracer experiment analytical modelling. ...

This paper presents the future intelligent transmission network substation architecture; it identifies most important design patterns for purpose of building simplified versions communication infrastructure with High-Availability Seamless Redundancy (HSR) and Parallel Protocol (PRP) configurations, respectively. The model used laboratory tests is detailed, details regarding modelling current-tr...