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The Journal of Engineering, Volume 2019, Issue 16, Page 3337-3340, March 2019., 2019 The Rogowski coil current transformer is widely used in intelligent substations for its rapid response, wide bandwidth measurement, and non‐magnetic saturation. In most cases, it works with a digital integrator to restore the differential signal output by the coil.
Fubin Pang +3 more
wiley +1 more source
IET Generation, Transmission &Distribution, Volume 18, Issue 8, Page 1611-1623, April 2024.This paper proposes a peak time of voltage travelling wave‐based protection scheme for DN with distributed generators using FRs as line boundary. Numerical simulation and experimental results verify that the proposed method can quickly and sensitively distinguish internal and external faults, and has high resistance to transition resistance.
Zhongxue Chang +3 more
wiley +1 more source
Modelling and validation of metal oxide surge arrester for very fast transients
High Voltage, Volume 3, Issue 2, Page 147-153, June 2018., 2018 Metal oxide surge arrester models that are currently on rounds suffer from certain deficiencies and as a consequence, they are not in position to portray accurately the arrester residual voltages. This drawback is mainly attributed to their inherent features.
Kannadasan Raju, Valsalal Prasad
wiley +1 more source
High Voltage, Volume 9, Issue 1, Page 150-162, February 2024.Abstract As voltage measuring devices are widely used in the high voltage power system with a primary‐secondary‐fusion structure, electronic voltage transformers are directly connected to the primary conductor and would face much more serious electromagnetic environments than general secondary equipment.
Houda Zhu +5 more
wiley +1 more source
Advances in Engineering Technology ResearchVFTO generated from GIS may cause interference and damage to terminal equipment on the primary and secondary sides, but experimental measures to evaluate the affected equipment and electromagnetic effects of the equipment through actual measurements are ...
Kejie Li, Longlong Li
semanticscholar +1 more source
Gaoya dianqi, 2020 GIS隔离开关在操作过程中会产生VFTO,对设备的安全稳定运行构成威胁,因此,研究隔离开关操作过程中VFTO的抑制措施具有重要意义。文中首先开展了隔离开关操作顺序对VFTO影响的理论分析,以某抽水蓄能500kVGIS由于VFTO引起的故障案例,通过仿真计算分析了优化操作顺序降低VFTO的效果。最后,对该措施的进一步推广应用进行了展望。
刘凯 +6 more
doaj
Study on transient voltage distribution characteristics of transformer windings [PDF]
, 2020 Very fast transient overvoltage (VFTO) with large waveform steepness and high amplitude can cause great harm to winding insulation of transformers and other equipment connected to it.
Xie Yu, Xu Jianwen, Xu Tao, Zang Ying
core +1 more source
The Structure of Potentially Semi-Stable Deformation Rings [PDF]
, 2011 Inside the universal deformation space of a local Galois representation one has the set of deformations which are potentially semi-stable of given p-adic Hodge and Galois type. It turns out these points cut out a closed subspace of the deformation space.
Kisin, Mark
core +1 more source
合闸电阻对1000 kV GIS高压隔离开关VFTO的抑制研究
Gaoya dianqi, 2021 为了得到合闸电阻在GIS高压隔离开关VFTO抑制中更加合理的值,采用双曲线电阻模型、2～5Ω的定值电阻模型、Mayr电弧模型组合成一个动态电弧模型来描述高压隔离开关电弧燃弧模型的预击穿阶段、稳态燃烧阶段和熄弧阶段,并通过改变合闸电阻在动态电弧模型各个阶段的电阻值来求得电弧各个阶段的最佳VFTO抑制值,再通过取各个阶段的最佳电阻值的平均值作为合闸电阻的最优电阻值。并结合了某1 000 kV特高压变电站分析了其内部关键设备处VFTO的极值 ...
刘子英, 张靖, 吴文辉
doaj