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Accurate partial discharge localisation using a multi-deep neural network model trained with a novel virtual measurement method

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, 2021; 15 (4)

Time difference of arrival-based localisation method has been extensively used by researchers for the partial discharge (PD) diagnosis despite being t......

Low-frequency performance of openable flexible double-loop Rogowski coil

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, 2021; 15 (7)

Double-loop Rogowski coils have become increasingly popular in the market because of their high sensitivity and flexible usage compared to their exten......

Visual inspection for transformer insulation defects by a patrol robot fish based on deep learning

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, 2021; 15 (7)

In order to effectively detect the internal insulation defects of large transformers, a miniature patrol robot fish is designed and used to observe th......

A new characteristic peaks group judgement method for the accurate measurement of time-of-flight in the ultrasonic gas flowmeter

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, 2021; 15 (7)

As a typical method for calculating time-of-flight (TOF), the double-threshold method is widely applied in many time-difference-based ultrasonic gas f......

Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

Polypropylene (PP) is being considered as a suitable alternative to the cross-linked polyethylene (XLPE) insulation as the latter is prone to the spac......

Core asymmetry influence on transmission line parameters of three-core power cables

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

Time-domain reflectometry applied for power cable diagnostics employs transmission line parameters to determine signal shape and delay. This paper pro......

Mixed multiple-variable modelling of acoustic emission signals for valve internal leakage detection

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

Theoretical analysis and experimental data show that the acoustic emission (AE) technology can detect the internal leakage state of the valve online. ......

Application of rotating coupling time-step finite element method in synchronous generators' internal faults simulation

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

A precise simulation of the internal faults of synchronous generators is very important for designing the main protection scheme; therefore, it is nec......

An investigation on discharge fault in buffer layer of 220 kV XLPE AC cable

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

Discharge failure mechanism of the cable buffer layer is investigated in this paper by the analysis of causes and characteristics of partial discharge......

Evaluation method for moisture content of oil-paper insulation based on segmented frequency domain spectroscopy: From curve fitting to machine learning

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

In recent years, frequency domain spectroscopy (FDS) is often used to evaluate oil paper insulation state in power transformer bushing. But it is stil......

Contact-free dielectric response measurement based on limit fitting by neural network

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

Frequency domain spectroscopy (FDS) is widely used in analysis of insulation condition of dielectric material. The traditional contact method is susce......

Hazard evaluation of ground potential difference within grounding grid on personal safety under impulse current

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, ; ()

Due to the impedance characteristic of conductor, the ground potential rise is different within grounding grid when impulse current is injected. When ......

A novel de-noising method based on coherence average for ultrasonic signal of partial discharge in transformer

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, 2021; 15 (3)

Ultrasonic method is widely used for the detection and location of partial discharge (PD) in transformer, however, the measured ultrasonic signal is u......

Application of grey wolf optimisation algorithm in parameter calculation of overhead transmission line system

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, 2021; 15 (2)

The transmission line is the main component in the power system consisting of inductance, capacitance, and resistance. These parameters are important ......

Effect of polarity-reversal voltage on charge accumulation and carrier mobility in silicone rubber/silicon carbide composites

期刊: IET SCIENCE MEASUREMENT & TECHNOLOGY, 2021; 15 (2)

Polarity-reversal voltage in high-voltage direct current transmission system would cause serious electric field distortion, accelerating charge inject......

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