A partial discharge detection method for high-voltage cables based on FDTD modeling
Zhejiang dianli, 2023 The partial discharge （PD） of high-voltage cables and the accessories directly affects the insulation performance of power cables. Therefore， a PD detection method for high-voltage cables based on finite-difference time-domain （FDTD） modeling is proposed.
PAN Biao +5 more
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Constant-pressure operation technology for salt cavern gas storage through solution mining under gas
You-qi chuyun, 2020 The efficient operation of salt cavern gas storage, as an ancillary facility of the gas pipeline network, is of greatsignificance to ensure the stable gas supply of the pipeline network.
Jun HE +4 more
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Exploration and practice of key equipment localization in oil and gaspipelines
You-qi chuyun, 2021 The key equipment of oil and gas pipelines is the important treasure of a country because they are related to national energy security. For many years, the key equipment has been imported, which become a bottleneck restricting the high-quality ...
Xiliang YANG, Dong ZHANG, Yongjun CAI
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Optimal Control of Transient Flow in Natural Gas Networks
, 2015 We outline a new control system model for the distributed dynamics of compressible gas flow through large-scale pipeline networks with time-varying injections, withdrawals, and control actions of compressors and regulators. The gas dynamics PDE equations
Backhaus, Scott +2 more
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Study on Stress-Strain Characteristics of Pipeline-Soil Interaction under Ground Collapse Condition
Geofluids, 2022 Ground collapse is one of the main geological disasters affecting the safe operation of oil and gas pipelines. Studying the stress-strain characteristics of pipe-soil interaction under ground collapse has an important guiding role for the prevention of ...
Xiaohui Liu +5 more
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Test for effect of welding layers on girth weld toughness of X80 pipeline steel
You-qi chuyun, 2022 The girth welds of natural gas pipelines applied by self-shielded flux cored semi-automatic welding process in multiple layers and passes are prone to failure, and the main reasons include the number of welding layers is less than that required by the ...
Ting WANG +5 more
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Current interference of HVDC ground electrode to buried pipelines and its personal safety distance
Natural Gas Industry B, 2019 When DC ground electrode of a high-voltage direct current (HVDC) transmission system is in the stage of early operation or in the case of failures and maintenance, an instantaneous large current will be generated and bring great potential safety hazards ...
Guofei Cao +7 more
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Exploration and prospect of the intelligent metrological verification technology of natural gas
You-qi chuyun, 2021 To solve the actual problems of accurate control of flow and quality during the verification of natural gas, an intelligent metrological verification system applicable to the medium-high pressure gas under the condition of multiple sources was researched
Hongwei ZHENG, Zhe LIU, Yan WU
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DYNAMIC PROCESSES IN LONG-STROKE PUMPING SET FOR BOOTY OF PETROLEUM-OIL [PDF]
, 2018 Researching of twowave dynamic processes in a rope hauling organ and of the lifted mixture of oil, water, gas and soil in the steel pipeline of plunger long-stroke pump for the booty of ...
KARYACHENKO, Natalia, ROPAY, Valery
core
Leak Detection Methods for Gas Pipelines
IFAC Proceedings Volumes, 1986 Abstract The paper describes two methods for detecting and locating leaks in long pipelines. The methods are based on an extended Kalman filter designed by lumping the non-linear Distributed Parameter (DP) system representing the pipeline system using the method of characteristic lines.
A. Benkherouf, A.Y. Allidina
openaire +1 more source