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Massive Power Device Condition Monitoring Data Feature Extraction and Clustering Analysis using MapReduce and Graph Model

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CES Transactions on Electrical Machines and Systems 2019年第2期3卷 221-230页

作者： Hongtao Shen Peng Tao Pei Zhao Hao Ma State Grid Hebei Energy Technology Service limited company Shijiazhuang050000China State Grid Hebei Electric Power Research Institute ShijiazhuangChina

Effective storage,processing and analyzing of power device condition monitoring data faces enormous challenges.A framework is proposed that can support both MapReduce and Graph for massive monitoring data analysis at the same time based on Aliyun DTplus ***,power device condition monitoring data storage based on MaxCompute table and parallel permutation entropy feature extraction based on MaxCompute MapReduce are designed and implemented on DTplus ***,Graph based k-means algorithm is implemented and used for massive condition monitoring data clustering ***,performance tests are performed to compare the execution time between serial program and parallel *** is analyzed from CPU cores consumption,memory utilization and parallel *** results show that the designed framework and parallel algorithms can efficiently process massive power device condition monitoring data.

关键词： Clustering analysis graph feature extraction mapreduce maxcompute power device condition monitoring.

Analysis on damage characteristics and detonation performance of solid rocket engine charge subjected to jet

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Defence Technology（防务技术） 2022年第9期18卷 1552-1562页

作者： Song-lin Pang Xiong Chen Jin-sheng Xu Ge-tu Zhaori Hong-Ying Du School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094China The 41st Institute The Sixth AcademyChina Aerospace Science and Industry CorporationHohhot010010China Technology Center Jinxi Industries Group Company LimitedTaiyuan030027China

To further explore the damage characteristics and impact response of the shaped charge to the solid rocket engine(SRE) in storage or transportation, protective armor was designed and the shelled charges model(SCM)/SRE with protective armor impacting by shaped charge tests were conducted. Air overpressures at 5 locations and axial acceleration caused by the explosion were measured, and the experimental results were compared with two air overpressure curves of propellant detonation obtained by related scholars. Afterwards, the finite element software AUTODYN was used to simulate the SCM impacted process and SRE detonation results. The penetration process and the formation cause of damage were analyzed. The detonation performance of TNT, reference propellant, and the propellant used in this experiment was compared. The axial acceleration caused by the explosion was also *** comprehensive comparison, the energy released by the detonation of this propellant is larger, and the HMX or Al particles contained in this propellant are more than the reference propellant, with a TNT equivalent of 1.168-1.196. Finally, advanced protection armor suggestions were proposed based on the theory of woven fabric rubber composite armor(WFRCA).

关键词： Explosion mechanics Shaped charge jet Damage characteristics Detonation performance of propellant

Evolution characteristics and exploration targets of Permian clastic rock reservoirs in Bohai Bay Basin,East China

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Petroleum Exploration and Development 2023年第5期50卷 1077-1091页

作者： CAO Yingchang SUN Peipei ZHOU Lihong YUAN Guanghui LIU Huimin LOU Da WU Zhiping JIN Qiang JIANG Youlu National Key Laboratory of Deep Oil and gas China University of Petroleum(East China)Qingdao 266580China Laboratory for Marine Mineral Resources Evaluation and Exploration Technology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China PetroChina Dagang Oilfield company Tianjin 300280China Sinopec Shengli Oilfield company Dongying 257001China

Based on core observation, thin section examination, fluid inclusions analysis, carbon and oxygen isotopic composition analysis, and other approaches, the structural and burial evolution histories were investigated, and the diagenetic evolution process and genetic/development models were systematically discussed of the Upper Paleozoic Permian clastic rock reservoirs in the Bohai Bay Basin, East China. The Bohai Bay Basin underwent three stages of burial and two stages of uplifting in the Upper Paleozoic. Consequently, three stages of acid dissolution generated by the thermal evolution of kerogen, and two stages of meteoric freshwater leaching occurred. Dissolution in deeply buried, nearly closed diagenetic system was associated with the precipitation of authigenic clay and quartz, leading to a limited increase in storage space. Different structural uplifting–subsidence processes of tectonic zones resulted in varying diagenetic–reservoir-forming processes of the Permian clastic reservoirs. Three genetic models of reservoirs are recognized. The Model I reservoirs with pores formed in shallow strata and buried in shallow to medium strata underwent two stages of exposure to long-term open environment and two stages of meteoric freshwater leaching to enhance pores near the surface, and were shallowly buried in the late stage, exhibiting the dominance of secondary pores and the best physical properties. The Model Ⅱ reservoirs with pores formed in shallow strata and preserved due to modification after deep burial experienced an early exposure-open to late burial-closed environment, where pore types were modified due to dissolution, exhibiting the dominance of numerous secondary solution pores in feldspar and the physical properties inferior to Model I. The Model Ⅲ reservoirs with pores formed after being regulated after multiple periods of burial and dissolution experienced a dissolution of acidic fluids of organic origin under a near-closed to closed environment, exhibiti

关键词： Bohai Bay Basin Permian clastic rock diagenetic evolution reservoir-forming mechanism secondary pore

Myanmar-China Oil and gas Pipeline with Me

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China Oil & gas 2022年第5期29卷 34-35页

作者： Kyaw Khine South-East Asia Crude Oil Pipeline company limited(SEAOP)

Dear leaders and colleagues,I am now in the Sinkontai Pump Station of the Myanmar-China oil and gas pipeline project and I will share with you my *** 2012,I was very excited when I saw the information that the Belt and Road Myanmar-China oil and gas pipeline project was recruiting 60 university graduates in Myanmar for the first *** I join the international cooperation project,the company will provide us with a platform to display our talents,and all the basic necessities of ***,I can send home my monthly income to support my *** careful preparation,I was recruited as an operator of South-East Asia Crude Oil Pipeline company *** a series of training such as English and Chinese courses,as well as oil and gas storage and transportation practice,I have mastered oil and gas transportation scheduling,pump station emergency management and operation,and become a qualified operator.

关键词： income Myanmar transportation

KDS-CM:A Cache Mechanism Based on Top-K Data Source for Deep Web Query

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Wuhan University Journal of Natural Sciences 2007年第5期12卷 830-834页

作者： KOU Yue SHEN Derong YU Ge LI Dong NIE Tiezheng College of Information Science and Engineering Northeastem University Shenyang 110004 Liaoning China Business Software Division Neusoft Group Limited Company Shenyang 110004 Liaoning China

Caching is an important technique to enhance the efficiency of query processing. Unfortunately, traditional caching mechanisms are not efficient for deep Web because of storage space and dynamic maintenance limitations. In this paper, we present on providing a cache mechanism based on Top-K data source （KDS-CM） instead of result records for deep Web query. By integrating techniques from IR and Top-K, a data reorganization strategy is presented to model KDS-CM. Also some measures about cache management and optimization are proposed to improve the performances of cache effectively. Experimental results show the benefits of KDS-CM in execution cost and dynamic maintenance when compared with various alternate strategies.

关键词： cache Top-K Deep Web data reorganization cache management and optimization

Characteristics and Origin of Tight Oil Accumulations in the Upper Triassic Yanchang Formation of the Ordos Basin,North-Central China

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Acta Geologica Sinica(English Edition) 2016年第5期90卷 1821-1837页

作者： WU Songtao ZOU Caineng ZHU Rukai YAO Jingli TAO Shizhen YANG Zhi ZHAI Xiufen CUI Jingwei LIN Senhu Research Institute of Petroleum Exploration & Development PetroChina Beijing 100083 China State Key Laboratory of Enhanced Oil Recovery Beijing 100083 China CNPC Key Laboratory of Oil and gas Reservoirs Beijing 100083 China Changqing Oilfield company PetroChina Xi 'an 710067 Shaanxi China

The Upper Triassic oil accumulations in the Ordos Basin is the most successful tight oil play in China,with average porosity values of less than 10% and permeability values below 1.0 *** study investigated the geological characteristics and origin of the tight oil accumulations in the Chang 6 member of the Upper Triassic Yanchang Formation in the Shanbei area based on over 50,000 petrological,source-rock analysis,well logging and production *** tight oil accumulation of the Chang 6 member is distributed continuously in the basin slope and the centre of the *** oilwater relationships are *** dissolution pores are the most important storage spaces,constituting 30%-60% of total porosity and showing a strong positive relationship with oil *** pore-throat diameter is less than 1 μm,and the calculated critical height of the oil column is much larger than the tight sand thickness,suggesting that the buoyancy was probably of limited importance for oil *** pressure difference between the source rocks and sandstone reservoirs is inferred to have provided driving force for hydrocarbon *** factors of source-reservoir configuration and laumontite dissolution contributed to the formation of the Chang 6 tight oil *** hydrocarbon generation and continuous sand bodies close to the hydrocarbon kitchen are the foundation for the large-scale oil *** of feldspar-laumontite during the process of organic matter evolution generated abundant secondary pores and improved the reservoir quality.

关键词： tight oil diagenesis tight sand nanopores Yanchang Fm. Ordos Basin

Effect of petroleum chemical fraction and residual oil content in saline lacustrine organic-rich shale: A case study from the Paleogene Dongpu Depression of North China

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Petroleum Science 2023年第2期20卷 649-669页

作者： Chen-Xi Zhu Fu-Jie Jiang Peng-Yuan Zhang Zhao Zhao Xin Chen Yu-Qi Wu Yuan-Yuan Chen Wei Wang Ze-Zhang Song Tao Hu Tian-Wu Xu Yong-Shui Zhou State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China China University of Petroleum(Beijing) Beijing102249China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100191China Tianjin Branch of CNOOC Ltd Tianjin300459China Shenzhen Branch CNOOC China LimitedShenzhenGuangdong518000China zhongyuan Oilfield Branch SINOPECHenan457001China

Halite and gypsum minerals in saline shale make the retention mechanism and chemical fractionation of residual oil unique. The Dongpu Depression in North China is a typically saline lacustrine basin with developing halite and gypsum. The effect of gypsum minerals on residual oil content and chemical fractionation remains unclear. In this study, shale samples with different gypsum contents were used in organic geochemical experiments, showing that the high total organic matter (TOC) content and type II kerogen leads to a high residual oil content, as shown by high values of volatile hydrocarbon (S1) and extractable organic matter (EOM). XRD and FE-SEM result indicate that the existence of gypsum in saline shale contributes to an enhanced pore space and a higher residual oil content in comparison to non-gypsum shale. Additionally, the increase in the gypsum mineral content leads to an increase in the saturated hydrocarbon percentage and a decrease in polar components percentage (resins and asphaltene). Furthermore, thermal simulation experiments on low-mature saline shale show that the percentage of saturated hydrocarbons in the residual oil is high and remains stable and that the storage space is mainly mesoporous (> 20 nm) in the oil expulsion stage. However, the saturated hydrocarbons percentage decreases rapidly, and oil exists in mesopores (> 20 nm and gas expulsion stage. In general, gypsum is conducive to the development of pore space, the adsorption of hydrocarbons and the occurrence of saturated hydrocarbon, leading to large quantities of residual oil. The data in this paper should prove to be reliable for shale oil exploration in saline lacustrine basins.

关键词： Oil fractionation Residual oil Saline lacustrine shale The Dongpu Depression

Comprehensive review of modeling,structure,and integration techniques of smart buildings in the cyber-physical-social system

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Frontiers in Energy 2022年第1期16卷 74-94页

作者： Kai GONG Jianlin YANG Xu WANG Chuanwen JIANG Zhan XIONG Ming ZHANG Mingxing GUO Ran LV Su WANG Shenxi ZHANG Key Laboratory of Control of Power Transmission and Conversion of the Ministry of Education Shanghai Jiao Tong UniversityShanghai 200240China State Power Investment Corporation limited Wind Power Innovation Center Shanghai 201100China State Grid Shanghai Municipal Electric Power company Shanghai 201100China

Smart buildings have been proven to be a kind of flexible demand response resources in the power *** maximize the utilization of the demand response resources,such as the heating,ventilating and air-conditioning(HVAC),the energy storage systems(ESSs),the plug-in electric vehicles(PEVs),and the photovoltaic systems(PVs),their controlling,operation and information communication technologies have been widely *** human behaviors and cyber space,a traditional power system evolves into a cyberphysical-social system(CPSS).Lots of new operation frameworks,controlling methods and potential resources integration techniques will be ***,these new techniques urge the reforming requirement of the techniques on the modeling,structure,and integration techniques of smart *** this paper,a brief comprehensive survey of the modeling,controlling,and operation of smart buildings is ***,a novel CPSS-based smart building operation structure is proposed,and the integration techniques for the group of smart buildings are ***,available busi-ness models for aggregating the smart buildings are ***,the required advanced technologies for well-developed smart buildings are outlined.

关键词： smart buildings cyber-physical-social-sys-tem optimization modeling demand response virtual power plant

Study on the Construction Scale of Pumped-storage Hydropower in Northeast Power Grid

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Electricity 2007年第1期18卷 39-42页

作者： Wang Nan Bai Jianhua Li You Gu Xiaoguang Li Chunshan Wang Ben State Power Economic Research Institute Northeast China Grid company limited 不详

Peak regulation in the Northeast power grid is going from bad to worse. This stimulates the need to pumped-storage hydropower for its role in this respect. Based on the status of power sources and the load forecast in the system, the author puts forward a minimum construction scale of pumped-storage stations by the end of 2020 from technical feasibility, and an economic scale from economy. The analysis and comparison on the two schemes can be regarded as a reference for reasonably planning pumped-storage stations in the northeastern part of China.

关键词：东北电网抽水蓄能水电站调峰建设规模经济规模技术可行性