Defects inside insulation of HV XLPE cable accessories can lead to partial discharge (PD) activity. When PD activity happens, leakage current may flow through the grounded line. To acquire the PD current signal, one practicable and effective method is placing a high frequency current transformer (HFCT) winding the grounded line. In order to measure the insulation degradation, a partial discharg...

In a DC microgrid that involves battery storage system, the primary energy management is performed by charger/discharger based on dc/dc power converter. Moreover, also used to regulate voltage of dc bus. One challenges at control level bus under charge and discharge conditions but different relations between voltages. For this reason, paper proposes Sepic/Zeta converter an adaptive controller, ...

Fertilizer particles have strong hygroscopicity and agglomeration often occurs during their storage, which leads to a blocked phenomenon the operation of external grooved wheel fertilizer discharger. In this study, bond model block was constructed based on discrete element method (DEM) further explore effect different working parameters spiral discharge characteristics. According Box–Behnken ex...

In DC and hybrid microgrids (MG), the DC-bus regulation using Energy Storage Devices (ESD) is important for the stable operation of both the generators and loads. There are multiple commercial voltage levels for both ESD and DC-bus; therefore, the ESD voltage may be higher, equal or lower than the DC-bus voltage depending on the application. Moreover, most of the ESD converter controllers are l...

Minimizing the voltage of corona discharges, especially when using nanomaterials, has been of great interest in the past decade or so. In this paper, we report a new corona discharge device by using ZnO nanowires operated in atmospheric air to realize continuous corona discharge excited by hundreds of volts. ZnO nanowires were synthesized on microelectrodes using electric-field-assisted wet che...

- the system at electric power plant has some main equipment that high voltage, one of them is generator. High voltage an isolation plays important role in operation a normal generator . many found damage to electrical happening on system, therefore it needed periodically monitoring maintain quality isolation. ways for check and detect partial discharger could exist because getting field pressu...

Introduction: We report a case of late-stage HCC who was successfully converted from unresectable to resectable with the help MDT treatment. Methods: A 60-year-old male patient admitted for portal vein tumor thrombus (PVTT) (stage C BCLC). The liver (with diameter 15cm) located in right lobe PVTT at main trunk and judged be insufficient volume left lobe. After discussion, comprehensive treatmen...