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Decision-making & Practice on the three gorges Project(TGP)

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工程科学（英文版） 2003年第1期1卷 1-7,79页

作者： Lu Youmei (China three gorges Project Development corporation, {3., Hubei 443.02.

China Yangtze TGP is a particularly giant hydro development project in the world, with an enormous scale and complex technology. Seventy years project planning, verification and decision making and ten years construction work demonstrate that not only great progress has been made within the projects implementation stage, but most of the conclusions from the verifications and decisions are correct as well. Some problems like sedimentation, environment and resettlement are still waiting to be proven in the actual operation of the project. This paper provides a brief introduction to the decision making and practice on TGP.

关键词： Yangtze River three gorges Project decision making practice

Research on DCC Strategy for Grid-Connected Inverter of D-PMSG under Unbalanced Network Voltage Conditions

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Electricity 2012年第Z1期 32-37页

作者： Song Lei1, Zhou Mingxing2, Bai Runqing3.1. Zhejiang Electric Power corporation Research Institute 2. Ningxia Yinchuan Electric Power Company 3. Gansu Electric Power Research Institute

According to performance analysis of a three-phase grid-connected inverter mathematical model of a directly-driven wind turbine with a permanent magnet synchronous generator (D-PMSG) under unbalanced network voltage conditions, a dual current-loop control strategy (DCC) oriented on positive voltage and negative current is proposed to inhibit the DC voltage fluctuation. Meanwhile, a notch filter is introduced into the conventional control strategy of a phase-locked loop to complete the low voltage ride through (LVRT) ability of the wind generator. A 1.5-MW D-PMSG with a back-to-back IGBT frequency converter was simulated in the PSCAD/EMTDC environment, and simulation results showed that: the maximum wind power tracking was achieved in this system and the proposed DCC strategy could successfully inhibit the rising aging of DC voltage and enhance the ride-through capability of D-PMSG wind generation system under unbalanced network voltage conditions.

关键词： dual current-loop control (DCC) low voltage ride through (LVRT) notch filter maximum wind power tracking

Application of Grey Associative Analysis to the Assessment of Regional Water Security

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工程科学（英文版） 2007年第2期5卷 191-196页

作者： Zhang Yanmin~1, Dong Qianjin~1, Wang Xianjia~1, Wang Jianping~2, Fu Chun~3.1.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 43.072, China 2.College of Economics and Management, China three gorges University, yichang {3. China 3. Center of China Central Economy Development, Nanchang University, Nanchang 3.0047, China)

The assessment of water security is an important content in the security management of water resources due to the fact that the state of water security directly affects both the sustainable development of regional economy and the improvement on the living quality of mankind. Grey associative analysis is introduced and applied to assessment of water security on the basis of grey characteristics of the assessment index system of water security. As a case study shows, grey associative analysis is used for evaluating water security of some provinces in China, and the satisfactory assessment results are obtained. The sequence of provinces in China with regard to water security from good to poor is obtained and, moreover, the water security level of each region is also confirmed. The results obtained accord with the actual state of each region. They are of practical significance and can be used to guide the management of regional water security and a sustainable development of the economy therein. At the same time, the results demonstrate that grey associative analysis provides a new method for assessing water

关键词： water security grey associative analysis comparative sequences reference sequences associative degree

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基于拉格朗日乘子和测量残差的参数辨识

系统仿真学报 2017年第12期29卷 2964-2971页

作者：贺智聂志成秦怡宁樊友平中国南方电网超高压输电公司曲靖局云南曲靖655000 三峡大学电气与新能源学院湖北宜昌443000 武汉大学电气工程学院湖北武汉430072

为满足现代电力系统的安全稳定控制、暂稳态分析,需要保证估计参数的精确性,通过对测量残差的分析提出了一个基于拉格朗日乘子和测量残差法的电网参数辨识方法。分两步完成参数的辨识:根据拉格朗日乘子法利用标准化的拉格朗日乘子对应... 详细信息

为满足现代电力系统的安全稳定控制、暂稳态分析,需要保证估计参数的精确性,通过对测量残差的分析提出了一个基于拉格朗日乘子和测量残差法的电网参数辨识方法。分两步完成参数的辨识:根据拉格朗日乘子法利用标准化的拉格朗日乘子对应于参数误差,通过判断相对于阈值的大小来判断哪些参数存在误差,自动检测辨识出有误差的参数;根据测量残差法利用测量冗余的残差相量,基于测量方程中的测量残差矩阵在解耦时所产生的偏差分量的估计值,估算参数误差。IEEE14节点系统的仿真验证了算法的正确性和有效性。

关键词：电力系统网络拉格朗日乘子测量残差参数辨识状态估计

Financing & Capital-running of a Large Hydropower Project——10 years' financing strategy & practices in the three gorges Project

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工程科学（英文版） 2003年第1期1卷 72-79页

作者： Li Yongan (China Yangtze three gorges Project Development corporation, {3., Hubei\ 443.02.

By summing up ten years’ decision making and practices in the three gorges Project(TGP)financing, this paper makes a thorough going analysis of the characteristics of financing and capital running in this large hydropower project. Meanwhile,the proposals are also presented in this paper for how to optimize the financing structure, lower the financing cost and set up a carrier for durative financing and capital running of this large hydropower project.

关键词： financing capital running hydropower project

Land Use of the three gorges Reservoir Area and the Effect on Its Landscape Pattern in the Recent 50 Years

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Wuhan University Journal of Natural Sciences 2006年第4期11卷 910-914页

作者： HUANG Zhiqin 1,2,3., ZHOU Wancun 1 ,ZHOU Jieming 4 , ZHU Mingcang 3.5 1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences , Chengdu 610041, Sichuan, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3. Sichuan Institute of Land Resource Management, Chengdu 610041, Sichuan , China 4. Department of Resources and Environment Science, Sichuan Normal University , Chengdu 610061, Sichuan, China 5. College of Information Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu Sichuan China Graduate University of Chinese Academy of Sciences Beijing China Sichuan Institute of Land Resource Management Chengdu Sichuan China Department of Resources and Environment Science Sichuan Normal University Chengdu Sichuan China College of Information Engineering Chengdu University of Technology Chengdu Sichuan China

The paper makes detailed analysis on the changing processes of the main types of land use in three gorges Reservoir Area through the techniques of RS （Remote Sense） and GIS （Geography Information System）. Based on the theory of landscape ecology, many types of landscape pattern indexes are calculated and made correlation analysis. The results indicate that： in 1995 the ecological environment of three gorges Reservoir Area was the most vulnerable in the recent 50 years, but resumed in 2002; the landscape pattern diversity index, fractal dimension index and fragmentation index has close correlation with the area of land use/cover change （LUCC）. The research also releases that the increase of the cultivated land, grassland and construction land deteriorates the landscape ecological pattern, while the increase of forest land area will help restore the landscape ecological pattern to its original state. The rapid change of grassland is an important index of the change of landscape pattern, because it has the most effect on change of landscape pattern index.

关键词： the three gorges Reservoir Area land use/cover change landscape pattern.

Key Technical Issues of TGP Permanent Shiplock

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工程科学（英文版） 2003年第1期1卷 57-61,71页

作者： Fan Qixiang (China Yangtze three gorges Project Development corporation, {3., Hubei\ 443.02.

To solve the high dam navigation issue of a world class project is one of the key technical issues that bring many difficulties upon the three gorges Project (TGP). Special requirements exist in the TGP double lane five step shiplock in terms of a general layout of navigation structures, a sedimentation hindrance to navigation, hydraulics of the water conveyance system, treatment of high and steep slopes, the manufacture and technology of both main metal structures and mechanical and electric equipment, all of which have been resolved step by step by means of scientific tests, verification and engineering practice.

关键词： navigation structures water conveyance system high and steep slope hydraulics

Daily optimized model for long-term operation of the three gorges-Gezhouba Cascade Power Stations

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Science China(Technological Sciences) 2007年第Z1期50卷 98-110页

作者： CAO GuangJing1, CAI ZhiGuo1?, LIU ZhiWu1 & WANG GuangQian2 1 China three gorges Project corporation, {3. 443.02. China 2 State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China China three gorges Project corporation Yichang China State Key Laboratory of Hydroscience and Engineering Tsinghua University Beijing China

This paper presents the step-by-step genetic algorithm based on artificial intelligence guidance and builds a long-term daily optimized operating model for the three gorges-Gezhouba Hydropower Complex with single generating set as the based operating unit. Actual operating data from 2004 to 2006 are used to verify the model, and results show that the simulation accuracy determined by measuring the total amount of cascade power generation reaches 99.66%. Statistic hydrological data of normal years and actual data of three years of 2004―2006 are respectively used to perform an optimized prediction of the power generation process and benefits in future when the water stored in the TGP Reservoir reaches 175 m level and power generation benefits under different operation modes, such as delayed subsiding water level, advance water storage, and adopting of different flood-limited water levels, are forecasted. In the case of years with normal inflows, the total amount of cascade power generation running on current specifications reaches 107500 GWh per year. If the commencement of water storage after the flood season is moved forward by 20 days, the amount of power generation can be increased by 3.00 GWh per year. If the limited water level in the flood season is raised by three to five meters, the amount of power generation can be increased by 1600 to 3.00 GWh per year. If the commencement of water storage is moved forward while the maximum water level allowed in the flood season is raised, the amount of power generation can be increased by 6400 GWh per year.

关键词： cascade operation three gorges Project genetic algorithm optimization forecast

An Analysis of the Designed Performance and Structural Characteristics of the Turbine Generating Units of TGP

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工程科学（英文版） 2003年第1期1卷 47-52页

作者： Huang Yuanfang (China Yangtze three gorges Project Development corporation, {3., Hubei\ 443.02.

The main technical requirement of the turbine generating units for the three gorges Project (TGP) has a basic conclusion through a long term study and research as well as *** with the TGP construction and successful execution of the contract of turbine generating units,the technical difficulties concerning the performance and structure of turbine generating units have been further *** this paper some issues are discussed and analyzed in connection with a deep going cognition of turbine generating units for TGP during the period of design, manufacture and installation.

关键词： three gorges Project turbine generating units technical problems discussion and analysis