An On-Line Method for Transmission Ampacity Evaluation

Wong, T. Y.; Findlay, J. A.; McMurtrie, A. N.

doi:10.1109/tpas.1982.317108

Cited by 13 publications

(2 citation statements)

References 4 publications

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“…This allows DTR releasing the unused capacities of power equipment in contrast to precalculated ratings. Later, DTR features were implemented in different online-monitoring systems for transformers [41][42][43][44][45][46][47] and their relay protection [17,[48][49][50][51][52][53][54]. After more than twenty years followed first publication on DTR, Douglass and al.…”

Section: Literature Review On Transformer Limitsmentioning

confidence: 99%

Energy limit of oil‐immersed transformers: A concept and its application in different climate conditions

Daminov

Prokhorov

Caire

et al. 2020

IET Generation Trans & Dist

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The reality of modern power grids requires the use of flexibilities from generation, load and storage. These flexibilities allow system operators to modify a transformer loading in a smart way. Therefore, power constraints of transformers can be overcome by using the appropriate flexibility. However, transformers have a physical limit of energy transfer which cannot be overpassed. This energy limit represents the unique transformer's loading profile, ensuring the highest energy transfer under a given ambient temperature profile. The paper explains how the energy limit can be calculated. Typical characteristics of an energy limit are estimated in cold continental climate of Russia and warm temperate climate in France. Maximal, minimal and mean loadings are identified for each month. Loading durations of energy limit are determined for each cooling system. It is found that winding temperatures of transformers, operating at energy limits, remain in the vicinity of design winding temperature. Therefore, transformer operation at energy limit avoids a high temperature stress and simultaneously maximizes the energy transfer. The application of energy limits for power system problems is briefly explained along the paper. Energy limit application can reduce an energy cost, maximize a renewable generation and increase a hosting capacity of distribution network. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Literature Review On Transformer Limitsmentioning

confidence: 99%

Energy limit of oil‐immersed transformers: A concept and its application in different climate conditions

Daminov

Prokhorov

Caire

et al. 2020

IET Generation Trans & Dist

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“…"China has built the world's largest video surveillance network, with more than 20 million video cameras," CCTV's documentary "Glorious China" reported. But on the other hand, the invasion, hijacking and legal information sales of cameras once constituted an industrial chain, and their impact was not limited to privacy leakage, but is also spreading to criminal cases and even to some areas such as national defense security information, financial trading information, commercial office secrets [1], etc.During the outbreak of blackmail virus in May 2017, more than 120, 000 network cameras around the world were hacked as springboards for virus transmission and attacks [2].On July 26, 2018, the Science, Technology and Information Technology Bureau of the Ministry of Public Security informed the Ningdu County Public Security Bureau that on July 24, a video private network and a dual network card server in public security network of the Traffic Control Brigade of the Ningdu County Public Security Bureau scanned a large number of servers of the national public security network servers [3].After the initial investigation by Ningdu County Public Security Bureau, it was found that the server was illegally invaded.Someone used hacker technology to invade the computers of public security network and install the Monroe coin mining software [4,5].…”

Section: Introductionmentioning

confidence: 99%

Research on Security Situation Assessment Model of Video Transmission Network

Jian¹,

Ting²,

Zhu³

2019

IJMECS

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In this paper, we propose a situation assessment model for video transmission network, which evaluates the security risk of video transmission network information from four aspects: front-end perception layer, transmission layer, application layer and other risks.We divide the video network security evaluation system into three layers, and use AHP to determine the weight of each index.The weights of these four aspects are calculated by analytic hierarchy process.The method proposed in this paper can provide an evaluation system and a calculation method for the safe operation of video transmission network and important systems, and can provide specialized information security services for the construction project of video transmission network.

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