Results 61 to 70 of about 792,851 (265)
Energy Science &Engineering, EarlyView.By manipulating current and voltage measurements, an assailant can induce unwanted relay action while attempting to avoid detection. Detecting advanced cyber intrusions in power protection environments requires specialised data analysis and anomaly detection methods.
Feras Alasali +6 more
wiley +1 more source
Calculation of Main Circuit Steady-State Parameters for Capacitor Commutated Converter System
Applied Sciences, 2023 The calculation of the main circuit parameters is the basic part of the engineering design for high voltage direct current (HVDC) transmission systems.
Ming Yan, Zheren Zhang, Zheng Xu
doaj +1 more source
Journal of Plant Nutrition and Soil Science, EarlyView.During regular operation of the SuedLink at a load ≤75 %, the average increase in temperature in the plowing horizon is expected to be less than 1.6°C in the soils along the route in Southwest Germany. ABSTRACT Background The SuedLink was planned as a high‐voltage direct‐current underground cable route. The construction itself is a massive intervention
Joachim Ingwersen +10 more
wiley +1 more source
Analysis of harmonics in subsea power transmission cables used in VSC-HVDC transmission systems operating under steady-state conditions [PDF]
, 2007 Subsea power cables are a critical component of a voltage-source converter-high-voltage direct current (VSC-HVDC) transmission system in any offshore electrical power scheme.
Bucknall, R.W.G., Chien, C.H.
core
Micro Partial Discharge Characteristics of SF6 Under DC Voltage
High Voltage, EarlyView.ABSTRACT In gas‐insulated high‐voltage direct current (HVDC) devices, micro partial discharges (PD) caused by micro‐protrusions or surface roughness on conductors or enclosures may not cause immediate insulation system failure due to their weak discharge intensity.
Geng Chen +4 more
wiley +1 more source
A market-based transmission planning for HVDC grid—case study of the North Sea [PDF]
, 2015 There is significant interest in building HVDC transmission to carry out transnational power exchange and deliver cheaper electricity from renewable energy sources which are located far from the load centers.
Gibescu, M +3 more
core +1 more source
High Voltage, EarlyView.ABSTRACT The harmonic current and vibration of a converter transformer are effective pieces of information for detecting mechanical faults in the winding. In this paper, the ratio of vibration acceleration to the current squared is defined as the vibration frequency response function (VFRF) of the winding, and then, a novel online vibration frequency ...
Shuyu Wu, Fan Zhang, Shengchang Ji
wiley +1 more source
HVDC Transmission Systems based Multi-level Voltage Source Converters for Iraqi Super Grid [PDF]
Engineering and Technology Journal, 2014 High Voltage Direct Current Transmission (HVDC) with Voltage Source Converter (VSC) technology provides substantial technical and economical advantages for different applications compared to conventional HVDC transmission systems based on thyristor ...
Adil Hameed Ahmed +1 more
doaj +1 more source
Hybrid HVDC for supply of power to offshore oil platforms [PDF]
, 2004 A HVDC hybrid system, comprising a line commutated thyristor HVDC converter and a STATCOM, is proposed in this paper for supplying power to offshore oil platforms that do not have their own generation. The proposed system combines the robust performance,
Andersen, B., Cartwright, P., Xu, L.
core
Partial discharge behavior under operational and anomalous conditions in HVDC systems [PDF]
, 2017 Power cables undergo various types of overstressing conditions during their operation that influence the integrity of their insulation systems. This causes accelerated ageing and might lead to their premature failure in severe cases.
Azizian Fard, M. +3 more
core +3 more sources