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对电力工程变电运行技术的探讨 被引量:4
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作者 王奕松 《科技与企业》 2013年第22期233-233,共1页
变电运行技术是电力技术中重要的组成,随着电力设施的增多、电力设备功能的提高,变电运行技术有了更为广阔地应用,要把握电力技术发展的这一主题和态势,以变电运行技术为核心,整体上推进电力工程的建设,达到促进电力事业发展的目标。本... 变电运行技术是电力技术中重要的组成,随着电力设施的增多、电力设备功能的提高,变电运行技术有了更为广阔地应用,要把握电力技术发展的这一主题和态势,以变电运行技术为核心,整体上推进电力工程的建设,达到促进电力事业发展的目标。本文列举了电力工程变电运行过程中常见的问题,展开了相关的技术和原因分析,探寻了以验电工作、运行保护、宣传教育等方式确保电力工程变电系统安全运行的技术和方法,以供同仁参考。 展开更多
关键词 力工程 运行技术 验电工作 运行保护 宣传教育
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10kV高压配电柜在配电设备中应用
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作者 嵇翔 《冶金与材料》 2021年第3期106-107,共2页
随着国家经济水平的稳步提高以及电力系统行业的迅速进步,人们对于电的需要和要求越来越多并且严格,而10kV高压配电柜在配电设备中的应用也越来越广泛。其不仅担负着整个的线路投入和退出任务,还肩负着消极或安全隐患问题的检查、预报... 随着国家经济水平的稳步提高以及电力系统行业的迅速进步,人们对于电的需要和要求越来越多并且严格,而10kV高压配电柜在配电设备中的应用也越来越广泛。其不仅担负着整个的线路投入和退出任务,还肩负着消极或安全隐患问题的检查、预报警和排除任务,能够为电网体系的高质量、高效率工作给予强有力的工作保障。实际上,整个电力设备运行的质量和效率能够直接影响地区和国家电网体系的实际作业质量、安全性及稳定性。文章通过简单阐述其在配电设备中应用存在的问题,主要针对开关和验电工作展开一系列的讨论,思考和提出其在配电设备中落实和优化应用的科学策略。 展开更多
关键词 10kV高压配 验电工作 系统 应用策略
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500kV输变电设备运维刍议
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作者 王泽禹 《中文科技期刊数据库(全文版)工程技术》 2021年第8期63-64,共2页
500kV输变电设备在电力系统运行过程中地位重大,其设备运维追求平稳、安全、可靠,如此才能确保电力系统整体长期可持续运行,生产经济效益大幅度提升。为此本文中简单刍议了500kV输变电设备在运行过程中可能存在的诸多问题,同时对500kV... 500kV输变电设备在电力系统运行过程中地位重大,其设备运维追求平稳、安全、可靠,如此才能确保电力系统整体长期可持续运行,生产经济效益大幅度提升。为此本文中简单刍议了500kV输变电设备在运行过程中可能存在的诸多问题,同时对500kV输变电设备运维工作要点进行解读,最后加以简单例证。 展开更多
关键词 500kV输变设备 问题 运维工作要点 差动保护动作 验电工作
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Investigation of different coal types effect on the overall plant recovery 被引量:1
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作者 Ghasemi J. Karamoozian M. Sereshki F. 《International Journal of Mining Science and Technology》 SCIE EI 2014年第4期447-450,共4页
Coal washing plants are usually fed from various sources. Coals include different combinations which should be considered for increasing the plant proficiency. Thus different methods have been used to enrich various c... Coal washing plants are usually fed from various sources. Coals include different combinations which should be considered for increasing the plant proficiency. Thus different methods have been used to enrich various coal types. In this study, Alborz-Sharghi coal washing plant was investigated which is fed from five coalmines. The optimum recovery was achieved for all coal types individually through experimental design. The controllable operation parameters in the experiments were collector dosage,frother dosage, solid percent content and particle size. The other parameters such as impeller speed,pH, conditioning time and flotation time were kept constant for all experiments. The optimum combination of coals was also specified. The results show that the optimum recovery for coal blends is 91.2%which shows much improvement relative to the plant conditions. 展开更多
关键词 Coal Effect Optimization Recovery
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Assessment of the Influence of Paper Insulation on the Discharge Initiation in Oil
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作者 Pawel Rozga Dariusz Hantsz 《Journal of Energy and Power Engineering》 2013年第10期1837-1843,共7页
The results of the assessment of the influence of paper insulation on the discharge initiation in oil were presented in this paper. This assessment based on the results of performed experimental works and on the analy... The results of the assessment of the influence of paper insulation on the discharge initiation in oil were presented in this paper. This assessment based on the results of performed experimental works and on the analysis of electrical field distribution. Both types of the studies were connected with the model HV (high voltage) electrode setups covered by paper and immersed in oil. Experimental works indicated that the source of "weak points" of paper-oil model electrode setup is oil, not the surface of metal or insulation wrapping. Such hypothesis, resulting mainly from the measured times to initiations of discharges developing from bare and insulated HV electrodes, was verified by the analysis of electrical field distribution performed on the basis of finite element method applied in the COMSOL Multiphysics software. This analysis confirmed preliminary the made hypothesis. Correlation with the most stressed oil volume law was also observed. 展开更多
关键词 Paper-oil insulation volume effect in oil discharges in oil finite element method high voltage.
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SIMULATION RESEARCH ON CHARACTERISTICS OFPERMANENT MAGNET LINEAR SYNCHRONOUS MOTOR 被引量:1
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作者 汪旭东 高岩 +2 位作者 袁世鹰 焦留成 王兆安 《Journal of Coal Science & Engineering(China)》 2000年第2期60-63,共4页
In this paper, a simulation model of Permanent Magnet Linear Synchronous Motor (PMLSM) is established by using phase equations method. Special attention is paid to its structure and the influence of longitudinal end e... In this paper, a simulation model of Permanent Magnet Linear Synchronous Motor (PMLSM) is established by using phase equations method. Special attention is paid to its structure and the influence of longitudinal end effect and the unbalance of current. The analytic method can be used for the analysis of dynamic and static characteristics of PMLSM. 展开更多
关键词 permanent magnet linear synchronous motor SIMULATION CHARACTERISTICS
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