The Insulation Aging State Assessment of High Voltage Cable Based on the Isothermal Relaxation Current

Liu, Heqian; Li, Lin; Zhang, Kexin; Zhang, Hang; Li, Zhongyuan; Liang, Jian

doi:10.1109/eebda53927.2022.9745002

Cited by 6 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In response to such problems, more and more scholars put their research focus on cable condition assessment. Heqian Liu [ 17 ] introduced the theory of dielectric response such as the isothermal relaxation current. Combined with the cable-aging equivalent model, the isothermal relaxation current peak-split fitting method, to represent the different processes of relaxation according to the attenuation characteristics of isothermal relaxation current, is provided.…”

Section: Literature Reviewmentioning

confidence: 99%

A Comprehensive Operation Status Evaluation Method for Mining XLPE Cables

Wang

Chen

Sun

et al. 2022

Sensors

View full text Add to dashboard Cite

At present, the online insulation monitoring and fault diagnosis of mining cables are extensively discussed, while their operation status assessment has not been deeply studied. Considering that mining cables are closely related to the safe and stable operation of coal mine power supply systems, a comprehensive evaluation method including the Analytic Hierarchy Process (AHP), the membership cloud theory, and the D-S evidence theory is proposed in this paper in order to accurately assess the operation status of the mining XLPE cable. Firstly, the membership cloud is introduced to solve the index membership degree and the weights are calculated by an improved weight vector calculation method. Secondly, the conversion from the base layer indicator membership degree to the target layer trust degree is realized based on the D-S evidence theory. Then, the cable operation status is judged via the trust degree maximum and the distribution of conflict coefficients is further analyzed to warn the indicators with a bad status in the base layer. Finally, the feasibility of the proposed evaluation method is verified by a sufficient and detailed case analysis.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

A Comprehensive Operation Status Evaluation Method for Mining XLPE Cables

Wang

Chen

Sun

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…To this end, many scholars have studied methods for identifying cable insulation faults. Lin Tiandi et al [1] studied a method for evaluating the insulation state of 110kV cables based on isothermal relaxation currents. The aging state of the cable insulation was determined based on the current curve, and the aging state evaluation was achieved by fitting diffusion parameters.…”

Section: Introductionmentioning

confidence: 99%

Intelligent identification method of 10kV cable insulation fault under damped oscillatory wave voltage

Chen,

Wei

et al. 2023

International Conference on Automation Control, Algorithm, and Intelligent Bionics (ACAIB 2023)

View full text Add to dashboard Cite

An intelligent identification method of 10kV cable insulation fault under damped oscillation wave voltage is designed. Control the amplitude of damping wave, infer the equivalent circuit, confirm the reflection law of electrical signal, measure the distance of fault points through classification method, distinguish the fault points, and realize the intelligent identification of 10kV cable insulation fault. The experimental results show that the proposed identification method has high accuracy in the analysis of the current flowing through the main insulation of the cable, and the waveform at the breakdown voltage of 20kV and 10kV is basically consistent with the actual waveform.

show abstract

“…Principal component analysis (PCA) is a multivariate statistical analysis method that transforms a group of variables originally related to each other into a series of linearly independent principal components based on the correlation between variables. These principal components are highly synthesized and generalized from the raw data, which can simplify the evaluation of diesel engines indicating power factors and provide most of the original information [2]. Venkatanarayana et al [3] used Taguchi's PCA to optimize the performance parameters of methyl esterdiesel engines.…”

Section: Introductionmentioning

confidence: 99%

The matching of power performance parameters of marine diesel based on orthogonal principal component analysis

Cai,

Yang,

Lin

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

To solve the problem of combining the operating parameters of marine diesel engines after modification. The 4190ZLC-2 type marine medium-speed engine produced by Jinan Diesel Engine Plant is used as the research object. The AVL_FIRE software is used to construct a dual-fuel combustion chamber model and verify the accuracy of the model. The orthogonal test method was used to simulate the combustion parameter matching the indicated power research objective. The method of principal component analysis was used for screening and comprehensive analysis. The results show that among the principal components affecting the indicated power, the cumulative contribution of the first two principal components reaches 99.90%, which basically contains all the information of the five indicators affecting the indicated power of diesel engine and can reflect the combination of power parameters of dual-fuel diesel engine. The study’s results can provide useful references for matching the influencing parameters of the indicated power.

show abstract

The Insulation Aging State Assessment of High Voltage Cable Based on the Isothermal Relaxation Current

Cited by 6 publications

References 2 publications

A Comprehensive Operation Status Evaluation Method for Mining XLPE Cables

A Comprehensive Operation Status Evaluation Method for Mining XLPE Cables

Intelligent identification method of 10kV cable insulation fault under damped oscillatory wave voltage

The matching of power performance parameters of marine diesel based on orthogonal principal component analysis

Contact Info

Product

Resources

About