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China, Philippines signed two power plants agreements
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《Electricity》 1996年第4期36-36,共1页
China and Philippines signed agreements on the construction of two power plants in the Philippines on Nov. 27, 1996. China Shanghai Electric Corp signed an export credit supply contract with Philippines Magellan Utili... China and Philippines signed agreements on the construction of two power plants in the Philippines on Nov. 27, 1996. China Shanghai Electric Corp signed an export credit supply contract with Philippines Magellan Utilities Development Corp for the huilding of a 300 MW 展开更多
关键词 Philippines signed two power plants agreements China
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$80m credit pact to a Pakistan thermal power project signed
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《Electricity》 1996年第3期39-39,共1页
Two agreements to provide guarantees and insurance for an $80-million export buyers’ credit to a Pakistani thermal power project were signed on August in Beijing. The agreements were reached between the People’s Ins... Two agreements to provide guarantees and insurance for an $80-million export buyers’ credit to a Pakistani thermal power project were signed on August in Beijing. The agreements were reached between the People’s Insurance (Property) Co Ltd (PICC Property), Bank of China and the Harbin Power Engineering Co Ltd. The UCH power project of Pakistan, which will cost $630 million and have a 586 MW capacity, is one of Pakistan’s first batch of non-governmental power projects. It will be built in Pakistan by the General Electric International Operations Co Inc of the United States and the Harbin Power Engineering Co Ltd. The US firm 展开更多
关键词 PICC BANK credit pact to a Pakistan thermal power project signed
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The third phase contract of Qinshan Nuclear Power Plant signed
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《Electricity》 1996年第4期49-49,共1页
China and Canada nailed down a deal to build the third phase of the Qinshan Nuclear Power Plant in Zhejiang Province in East China on Nov. 26, 1996. The contract was signed in Shanghai by China National Nuclear Corp (... China and Canada nailed down a deal to build the third phase of the Qinshan Nuclear Power Plant in Zhejiang Province in East China on Nov. 26, 1996. The contract was signed in Shanghai by China National Nuclear Corp (CNNC) and Atomic Energy of Canada Ltd(AECL). AECL will construct two 700 MW heavy water reactors for the Chinese nuclear power plant. 展开更多
关键词 DOWN The third phase contract of Qinshan Nuclear power Plant signed
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Investing agreement on Yunnan Kaiyuan Power Plant Project signed
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《Electricity》 2001年第1期44-44,共1页
关键词 PROJECT Investing agreement on Yunnan Kaiyuan power Plant Project signed
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China and Canada sign Qinshan Phase III nuclear power deal
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《Electricity》 1996年第3期22-22,共1页
China and Canada have signed a project award agreement for the co-operation for the Qinshan Phase Ⅲ Candu nuclear power project, marking significant progress in commercial negotiations between both countries on the c... China and Canada have signed a project award agreement for the co-operation for the Qinshan Phase Ⅲ Candu nuclear power project, marking significant progress in commercial negotiations between both countries on the construction of two 700 megawatt class Candu units. The agreement, signed between the China National Nuclear Corp (CNNC) and the Atomic Energy of Canada Ltd (AECL) in Beijing on July 12, finalized the price and commercial terms for Qinshan Phase 展开更多
关键词 III China and Canada sign Qinshan Phase III nuclear power deal
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A lending contract for interconnection project between Northeast and North China Power Network signed
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《Electricity》 2001年第1期48-48,共1页
关键词 Bank A lending contract for interconnection project between Northeast and North China power Network signed
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Supply contract for Nantong Power Plant Phase II signed
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《Electricity》 1996年第3期45-45,共1页
Power generating equipment supply contract for Huaneng Nantong Power Plant Phase Ⅱ project affiliated to Huaneng International Electric Power Stock Company Ltd. was signed at the People’s Great Hall on June 28, 1996... Power generating equipment supply contract for Huaneng Nantong Power Plant Phase Ⅱ project affiliated to Huaneng International Electric Power Stock Company Ltd. was signed at the People’s Great Hall on June 28, 1996, Shi Dazhen, Minister of Electric Power, Ye Qing, Vice-chairman of the State Planning Commission, Zhang Youcai, Vice Minister of Finance and 展开更多
关键词 II Supply contract for Nantong power Plant Phase II signed
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General contracts of Fuqing and Fangjiashan nuclear power projects signed
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《Electricity》 2008年第2期18-,共1页
The general contracts of Fuqing and Fangjiashannuclear power projects affiliated to CNNC were signedon April 30th. It is the first time for CNNC to developnuclear power projects by EPC contracts includingdesign, purch... The general contracts of Fuqing and Fangjiashannuclear power projects affiliated to CNNC were signedon April 30th. It is the first time for CNNC to developnuclear power projects by EPC contracts includingdesign, purchasing and construction.Fuqing nuclear power project is located in 展开更多
关键词 General contracts of Fuqing and Fangjiashan nuclear power projects signed
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Jianbi Power Plant signed a contract with Parsons Company on retrofitting No.7 unit
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《Electricity》 1997年第2期36-36,共1页
关键词 Jianbi power Plant signed a contract with Parsons Company on retrofitting No.7 unit
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The import contract on the generating equipment of Hanfeng Thermal Power Plant signed in Beijing
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《Electricity》 1996年第4期50-50,共1页
On November 8, 1996. the import contract signing ceremony on the two 660 MW coal-fired generating units of Hanfeng Thermal Power Plant 1st phase was held in the Great Hall of People, Beijing.
关键词 The import contract on the generating equipment of Hanfeng Thermal power Plant signed in Beijing
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The franchise contract on the first power plant to be BOT-built signed
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《Electricity》 1996年第4期48-48,共1页
The Laibin B Thermal Power Plant in Guangxi Zhuang Autonotnous Region will be built under China’s BOT-build. operate. transfer. It in the first power plant of its kind in China. The Laibin B Power Plant will install ... The Laibin B Thermal Power Plant in Guangxi Zhuang Autonotnous Region will be built under China’s BOT-build. operate. transfer. It in the first power plant of its kind in China. The Laibin B Power Plant will install two 350 MW generating units and is planned to go into commercial operation in 2000. The first unit is scheduled to go on line in October 1999. 展开更多
关键词 BOT The franchise contract on the first power plant to be BOT-built signed
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含非零主对角元的非powerful本原符号矩阵的基指数集
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作者 陈思远 尤利华 《华南师范大学学报(自然科学版)》 CAS 北大核心 2009年第3期28-32,共5页
研究了含非零主对角元的n阶非powerful本原符号矩阵的基指数集,得到了这类矩阵基指数的(最好)上界,并证明了它的基指数集不存在缺数段.
关键词 powerful 矩阵 符号模式 本原 基指数
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Progressive Revolution-On Chinese-English Translation of China's Public Signs
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作者 张密 《海外英语》 2013年第16期145-146,共2页
In 1978, there came the refreshment of reform in the whole China, like mushrooms after rain. During his southern tour, Deng Xiaoping, the general secretary of People's Republic of China, gave the proclaim which op... In 1978, there came the refreshment of reform in the whole China, like mushrooms after rain. During his southern tour, Deng Xiaoping, the general secretary of People's Republic of China, gave the proclaim which opened a new page for Reform-Opening up policy when China's economic development had been involved into the ocean of international economy. At the background of the new cooperation, the study on C-E translation of China's public signs has been gradually paid attention to. Then there are many more scholars going for the study of public signs ,who have been kept steps with the world in recent studies;It is helpful to improve the atmosphere of China's language and humanity accomplishments and to strengthen the soft power and civilized image. 展开更多
关键词 PUBLIC signS REFORM China SOFT power
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Enhanced graph-based fault diagnostic system for nuclear power plants 被引量:1
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作者 Yong-Kuo Liu Xin Ai +4 位作者 Abiodun Ayodeji Mao-Pu Wu Min-Jun Peng Hong Xia Wei-Feng Yu 《Nuclear Science and Techniques》 SCIE CAS CSCD 2019年第12期8-21,共14页
Scheduled maintenance and condition-based online monitoring are among the focal points of recent research to enhance nuclear plant safety.One of the most effective ways to monitor plant conditions is by implementing a... Scheduled maintenance and condition-based online monitoring are among the focal points of recent research to enhance nuclear plant safety.One of the most effective ways to monitor plant conditions is by implementing a full-scope,plant-wide fault diagnostic system.However,most of the proposed diagnostic techniques are perceived as unreliable by operators because they lack an explanation module,their implementation is complex,and their decision/inference path is unclear.Graphical formalism has been considered for fault diagnosis because of its clear decision and inference modules,and its ability to display the complex causal relationships between plant variables and reveal the propagation path used for fault localization in complex systems.However,in a graphbased approach,decision-making is slow because of rule explosion.In this paper,we present an enhanced signed directed graph that utilizes qualitative trend evaluation and a granular computing algorithm to improve the decision speed and increase the resolution of the graphical method.We integrate the attribute reduction capability of granular computing with the causal/fault propagation reasoning capability of the signed directed graph and comprehensive rules in a decision table to diagnose faults in a nuclear power plant.Qualitative trend analysis is used to solve the problems of fault diagnostic threshold selection and signed directed graph node state determination.The similarity reasoning and detection ability of the granular computing algorithm ensure a compact decision table and improve the decision result.The performance of the proposed enhanced system was evaluated on selected faults of the Chinese Fuqing 2 nuclear reactor.The proposed method offers improved diagnostic speed and efficient data processing.In addition,the result shows a considerable reduction in false positives,indicating that the method provides a reliable diagnostic system to support further intervention by operators. 展开更多
关键词 NUCLEAR power plants FAULT diagnosis signED directed graph DECISION TABLE GRANULAR computing
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基于驾驶员脑电信号的平原区四车道公路禁令和警告标志优化设置
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作者 任董普 刘怡美 +2 位作者 索传政 蓝清 史磊 《公路交通科技》 CAS CSCD 北大核心 2024年第2期182-190,共9页
为探究平原区4车道公路各类交通禁令和警告标志的设置效果,通过现场试验采集驾驶员脑电信号数据,对脑电信号电位、时频、地形图、功率及其衍生指标等进行了综合分析,研究驾驶员在观察不同类型交通禁令和警告标志时的脑电特征,实现了对... 为探究平原区4车道公路各类交通禁令和警告标志的设置效果,通过现场试验采集驾驶员脑电信号数据,对脑电信号电位、时频、地形图、功率及其衍生指标等进行了综合分析,研究驾驶员在观察不同类型交通禁令和警告标志时的脑电特征,实现了对交通标志设置效果的客观评价。结果表明:在试验路段,驾驶员观察交通禁令和警告标志时较静息状态的脑部额叶区电位变化和脑电功率变化均更加显著,脑区激活程度更高,该路段交通禁令和警告标志的设置总体上能够引起驾驶员的警觉;试验路段中十字交叉、限制质量、环形交叉、T形交叉、限速、解除限速6类交通禁令和警告标志在脑电β波相对功率和θ/β功率指标中均有显著性差异,其中限速和解除限速类交通标志β波相对功率较高,θ/β功率指标较低,该类交通标志设置效果较好,能够引起驾驶员较高的注意;限制质量、十字交叉、T形交叉类交通标志β波相对功率较低,θ/β功率指标较高,该类交通标志设置效果较差,不能引起驾驶员足够的注意,其原因可能与驾驶员驾驶习惯和道路环境等因素有关,在对该路段交通禁令和警告标志进行优化时,应重点考虑限制质量、十字交叉、T形交叉这几类标志。研究结果可为同类公路交通禁令和警告标志的优化设置提供参考和借鉴。 展开更多
关键词 交通工程 优化设置 现场试验 脑电信号 禁令和警告标志 脑电功率 平原区公路
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龙于经传皆有云:《说文解字》龙部字文化特质孔见
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作者 黄交军 李国英 《漯河职业技术学院学报》 2024年第5期1-16,共16页
龙乃远古传说中的动物,历经上万年的推阐演绎,最终成为独具民族特色的重要文化现象。《说文解字》保存史前以来中华先民仰观俯察、穷究天人的珍贵历史信息,故以龙部字为考察目标剖析其文化特质,研究结果证实:蛮荒时代受中原农耕文化影响... 龙乃远古传说中的动物,历经上万年的推阐演绎,最终成为独具民族特色的重要文化现象。《说文解字》保存史前以来中华先民仰观俯察、穷究天人的珍贵历史信息,故以龙部字为考察目标剖析其文化特质,研究结果证实:蛮荒时代受中原农耕文化影响,龙作为鳄类动物首先以祈雨解厄之巫术面目出现;随着民族融合,在封建“大一统”的历史驱动下,龙因身份尊贵、兼容并包诸多优势成为帝王贵胄之标志性符号;封建帝制退出中国历史舞台后,龙在中华民族共同体意识砥淬重铸下跃升为国民的身份象征。《说文解字》龙部字忠实见证龙在兽性、神性、人性之间的语码转换,龙文化承载着中华民族海纳百川、乘风破浪、龙马精神的辉煌史诗。 展开更多
关键词 说文解字 文化特质 祈雨灵兽 皇权标志 国族象征
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光伏电力设备屏柜自动转换警示牌的研制
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作者 吕琨璐 赵国伟 《农村电气化》 2024年第10期76-77,共2页
电力系统检修工作中,检修设备屏柜时,都会在相应屏柜上悬挂“在此工作”警示牌、在检修设备相邻开关柜或者继电保护屏上悬挂“运行设备”警示牌,且在检修工作结束后,要将之前悬挂的“在此工作”“运行设备”警示牌收回,这样工作量比较... 电力系统检修工作中,检修设备屏柜时,都会在相应屏柜上悬挂“在此工作”警示牌、在检修设备相邻开关柜或者继电保护屏上悬挂“运行设备”警示牌,且在检修工作结束后,要将之前悬挂的“在此工作”“运行设备”警示牌收回,这样工作量比较大。为了解决该问题,文章研制了光伏电力设备屏柜自动转换警示牌,当屏柜门关闭时,自动显示“运行设备”;当屏柜门打开时,自动显示“在此工作”,节省了悬挂“在此工作”“运行设备”警示牌的人力,且警示牌显示所需电能来自光伏电池阵列转换的太阳能,节能环保。 展开更多
关键词 光伏 电力设备 自动转换 警示牌
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复杂海杂波背景下分数低阶匹配滤波检测方法 被引量:8
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作者 郑作虎 王首勇 《电子学报》 EI CAS CSCD 北大核心 2016年第2期319-326,共8页
针对在复杂海杂波背景下,雷达目标检测中动目标检测(Moving Target Detection,MTD)技术的检测性能显著下降的问题,以及局部最优检测器(Locally Optimum Detector,LOD)仅适用于低信杂比背景下弱目标检测的问题,基于分数低阶统计量理论,... 针对在复杂海杂波背景下,雷达目标检测中动目标检测(Moving Target Detection,MTD)技术的检测性能显著下降的问题,以及局部最优检测器(Locally Optimum Detector,LOD)仅适用于低信杂比背景下弱目标检测的问题,基于分数低阶统计量理论,提出了一种分数低阶匹配滤波检测方法.该方法通过幂变换抑制杂波的非高斯特性,通过应用杂波分数低阶协方差矩阵特征值分解的方法白化相关杂波,在此基础上应用匹配滤波进行目标积累,以提高信杂比.通过仿真和实测数据,对所提出方法的检测性能进行了验证,并且与MTD和LOD进行了比较.结果表明,本文所提出方法能较好地解决非高斯相关杂波背景下的目标检测问题,检测性能明显优于MTD和LOD方法. 展开更多
关键词 非高斯相关杂波 幂变换 分数低阶协方差 杂波白化
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基于Alpha稳定分布杂波模型的雷达目标检测方法 被引量:5
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作者 郑作虎 王首勇 《电子与信息学报》 EI CSCD 北大核心 2014年第12期2963-2968,共6页
针对非高斯相关杂波背景下,移动目标检测(MTD)技术的检测性能严重下降的问题,该文基于Alpha稳定分布杂波模型和本征滤波理论,提出一种非高斯相关杂波背景下的雷达目标检测方法。该方法基于Alpha稳定分布杂波模型,通过幂变换抑制杂波的... 针对非高斯相关杂波背景下,移动目标检测(MTD)技术的检测性能严重下降的问题,该文基于Alpha稳定分布杂波模型和本征滤波理论,提出一种非高斯相关杂波背景下的雷达目标检测方法。该方法基于Alpha稳定分布杂波模型,通过幂变换抑制杂波的非高斯特性,以及通过分数低阶相关矩阵白化杂波,在此基础上应用本征滤波实现对目标信号的有效积累,可提高信杂比。仿真实验和实测数据验证表明,该方法在非高斯相关杂波背景下的检测性能明显优于MTD方法的性能。 展开更多
关键词 雷达 目标检测 非高斯相关杂波 ALPHA稳定分布 幂变换 杂波白化
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基于IGBT的配电变压器有载调压开关参数设计及分析 被引量:17
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作者 周念成 苏宇 +3 位作者 王强钢 葛军凯 高俊青 张静 《电力自动化设备》 EI CSCD 北大核心 2018年第7期35-42,67,共9页
对比了机械式、混合式和全电力电子式配电变压器有载调压开关(OLTC)的结构特点,提出了一种基于绝缘栅双极型晶体管(IGBT)的配电变压器OLTC电路结构和控制方案,给出了该OLTC主电路IGBT器件、过渡电路和吸收电路的参数设计方法,推导了所设... 对比了机械式、混合式和全电力电子式配电变压器有载调压开关(OLTC)的结构特点,提出了一种基于绝缘栅双极型晶体管(IGBT)的配电变压器OLTC电路结构和控制方案,给出了该OLTC主电路IGBT器件、过渡电路和吸收电路的参数设计方法,推导了所设计OLTC的有功损耗计算式。所提方案克服了机械式OLTC动作慢、切换产生电弧等缺点,可辅助配电变压器实现快速、无弧的有载调压。搭建了仿真模型和实验平台,对OLTC的调压性能进行了测试,分析了开关参数对其有功损耗及IGBT承受电流电压的影响,将仿真、实验和理论计算结果对比,验证了所提有载调压方案的有效性。 展开更多
关键词 配电变压器 有载调压开关 绝缘栅双极型晶体管 参数设计 有功损耗
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