Future Trends in Transformer Online Monitoring

Auronen, Teemu; Murat, Ivan; Hänninen, Teemu; Keitoue, Samir

doi:10.1007/978-981-15-5600-5_6

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…This may be private information, which regards the running of the business, investments, performance and abilities of the agent (Valančienė and Jegelevičiūtė 2014). The managers therefore take advantage by exploiting the situation to their benefit resulting in agency cost (Cuervo-Cazurra, Mudambi, and Pedersen 2019;Company, Jensen, and Meckling 1976;Auronen 2003;Martin, Wiseman, and Gomez-Mejia 2019;Hill, C. W., & Jones 1992) Third Party Agent Principal…”

Section: Challenges Of Agency Theorymentioning

confidence: 99%

The dynamics of Pecking Order and Agency theories on crowdfunding concept as alternate finance for start-up businesses

Kuma

Yosuff

2020

IJTMR

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The study explores the relevance of theoretical aspect of crowd financing by reviewing the defining literature on Pecking Order and Agency theories in details and evaluates applications of these theories based on crowdfunding. In particular, the study critically considers the key concepts of these theories and how they could be applied in practical terms. The study decides to adopt Pecking Order and the Agency theories because they provide valuable insights into the trend of crowdfunding streams available to firms. The paper primarily adds to existing literature on the broader definition of crowdfunding as a concept and then examine the relationship between this concept and its practical applications to the chosen theories. The study combines these theoretical perspectives with the practical aspects of startup companies raising finance using the crowd because a broad reading of the literature tends to point to in this direction. The key concepts of these theories are critically considered and the study is conducted in the form of review of literature and expression of opinion. Citation: author1, author2, author3. The dynamics of Pecking Order and Agency theories on crowdfunding concept as alternate finance for start-up businesses. 2020; 4(1): 1－13.Received: (February 2, 2020) Accepted: (March 31, 2020)

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Section: Challenges Of Agency Theorymentioning

confidence: 99%

The dynamics of Pecking Order and Agency theories on crowdfunding concept as alternate finance for start-up businesses

Kuma

Yosuff

2020

IJTMR

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Experimental Characterisation of the Dynamic Mechanical Properties of Pressboard

Linhares

Carneiro

Lopes

et al. 2023

2023 IEEE International Conference on Environment and Electrical Engineering and 2023 IEEE Industrial and Commercial Power Syst

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Power Transformer Condition Monitoring Based on Evaluating Oil Properties

et al. 2022

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The authors review the techniques applied to diagnose oil aging. Further, the authors put forward a new diagnostic method. It stipulates for an additional high-frequency measuring loop formed in an operating transformer. This dielcometric measuring capacitor cell includes a stray capacitance generated by the transformer winding and core. The monitoring of the dependence between the physico–technological oil parameters and the measuring cell capacity is fundamental for the procedures for determining the composition and properties of the transformer oil filling this cell. High-frequency low-voltage is the output signal. To prevent the cross-impact of low-frequency high-voltage and high-frequency low-voltage circuits, the pilot high-frequency low-voltage is excited by a special coupling capacitor; the output to the power feeder is conducted through an appropriate low-frequency choke, where the measuring capacitor cell does not disturb the normal transformer operation. The key physical processes used for the monitoring are analyzed and described in detail. The authors develop an algorithm to compute the current resistances of both the transformer oil and its impurities. The transformer state is estimated by comparing the parameters specified with preset permissible limits. A structure flowchart based on two synchronous quadrature detectors is proposed for a high-frequency measuring loop. The monitoring system considered allows for determining the following insulating oil properties by using the algorithm for processing the recorded data: moisture content; dielectric losses due to the accumulation of aging products in the oil and its pollution; and the content of dissolved gases in the oil. The monitoring system operability and efficiency are confirmed by appropriate experimental studies. The experiments are conducted using a TM-25-6/0.4 oil-filled transformer with a capacity of 25 kVA in a steady-state operating mode at a load current of 25 A. It is found that the proposed control system allows for identifying a critical defect of increased moisture content in the oil with no more than 10% error, and a sensitivity threshold in the order of tenths of ppm.

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Future Trends in Transformer Online Monitoring

Cited by 3 publications

References 2 publications

The dynamics of Pecking Order and Agency theories on crowdfunding concept as alternate finance for start-up businesses

The dynamics of Pecking Order and Agency theories on crowdfunding concept as alternate finance for start-up businesses

Experimental Characterisation of the Dynamic Mechanical Properties of Pressboard

Power Transformer Condition Monitoring Based on Evaluating Oil Properties

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