China International Water and Electrical Corporation

Xicheng, China

China International Water and Electrical Corporation

Xicheng, China
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Liu J.,Shenzhen University | Zuo J.,University of South Australia | Sun Z.,Chongqing Three Gorges University | Zillante G.,University of Adelaide | Chen X.,China International Water and Electrical Corporation
Renewable and Sustainable Energy Reviews | Year: 2013

Hydropower development has significant impacts on the society and community economically, environmentally and socially. These impacts may go beyond the regional level, even across the nation. As one of the largest scale hydropower developments in the world, the Three Gorges Project has attracted attentions right from the conception stage. This paper adopted a case study approach to investigate the sustainable development practice in the Three Gorges Project. The case study shows that under the guidance of the State Council, the China Three Gorges Corporation has devoted to manage environmental, economic and social sustainability issues of the Three Gorges Project across various project stages (e.g. conception, design, construction and operation). The sustainability practice adopted in the Three Gorges Project generally follows the Hydropower Sustainability Assessment Protocol developed by the International Hydropower Association. As a result, the environmental auditing is satisfactory to the national standards and the project has achieved numerous social and economic benefits. However, resettlement, coordinated development and ecological impacts on the local ecosystem present significant challenges to future hydropower developments. This study highlighted a number of factors contributing towards better sustainability performance of hydropower developments in China, e.g. international collaboration, system approach, ongoing monitoring and strategic human resource management. The experiences gained from the Three Gorges Project have been applied into other hydropower developments in China. This study provides a useful reference to the sustainable energy development practice over the world. © 2012 Elsevier Ltd.


Yuan L.,China Agricultural University | Yuan L.,China Institute of Water Resources and Hydropower Research | Liu X.,China Institute of Water Resources and Hydropower Research | Wang X.,China Institute of Water Resources and Hydropower Research | And 4 more authors.
Shuili Fadian Xuebao/Journal of Hydroelectric Engineering | Year: 2012

This paper presents a shaking table test and model dam analysis by equivalent linear method for the highest core rock-fill dam in the world, the Shuangjiangkou dam, including vertical profiles of acceleration amplification factor and its variations along dam axis and in stream direction. The results show that the equivalent linear method is applicable to dynamic analysis of rock-fill dam, but its calculation error is quite obvious, because computed values smaller than the tested values could occur if FEM meets difficulties in accurate simulation of large deformation on incompact slope. This error becomes greater for stronger seismic inputs. The natural frequency of prototype dam estimated by similarity theory is close to the calculations. This work demonstrates that shaking table test provides important reference to study of dynamic characteristics of high rock-fill dam. © right.


Yuan L.,China Agricultural University | Liu X.,Basin Water | Wang X.,Basin Water | Dai C.,China International Water and Electrical Corporation
Advanced Materials Research | Year: 2013

The pattern and characteristics of seismic damage for Shuangjiangkou ECRD and Houziyan CFRD models were studied through large-scale earthquake simulation shaking table tests in this work. The test results showed that the main earthquake damage pattern of rock-fill dam is permanent residual deformation and shallow slide on the downstream slope. Seismic residual deformation of rock-fill dam, which is filled and compacted well, is very small. Regardless of ECRD or CFRD, the horizontal displacement and settlement on downstream slope are significantly larger than upstream slope under empty reservoir. The analysis of residual deformation and vibration frequency before and after failure indicated that aseismic performance of CFRD is superior to ECRD. Because of the remarkable whipping effect in the high rock-fill dam, the key parts of aseismic design is downstream slope near the dam top, where appropriate aseismic measures should be taken. © (2013) Trans Tech Publications, Switzerland.


Liu X.F.,Tianjin Research Institute for Water Transport Engineering | Zhang M.L.,China International Water and Electrical Corporation | Ye Z.W.,Changjiang Waterway Bureau
Applied Mechanics and Materials | Year: 2014

After the Three Gorges Reservoir, sandy pebble Reach incoming water and sediment conditions has change, the changes of incoming water and sediment conditions might make sandy pebble reach riverbed scouring-erosion variation. This paper study on sandy pebble reach riverbed erosion and deposition basic law after the Three Gorges Reservoir, and provide the decision basis for large-scale system renovation in the middle Yangtze River. © (2014) Trans Tech Publications, Switzerland.


Chang X.-L.,Wuhan University | Zhang M.-L.,Wuhan University | Zhang M.-L.,China Interna Tional Water and Electrical Corporation | Yang H.-Y.,Wuhan University | And 2 more authors.
Yantu Lixue/Rock and Soil Mechanics | Year: 2010

A great deal of factors evaluating the adjoining rock stability is uncertain. As the set pair system and connection entropy model can dispose the uncertain problem, a connection entropy model for stability evaluation of adjoining rock is presented. By calculating the connection entropy values at different safety gradation, the stability grade of adjoining rock could be obtained. The method could provide a new way to evaluate uncertain system like stability evaluation. The case study shows that the bigger the connection entropy value is, the worse the rock stability is, i.e. the more dangerous adjoining rock is.


Li C.,Renmin University of China | Ye C.-Q.,North China Electrical Power University | Zhao D.,North China Electrical Power University | Mou L.,North China Electrical Power University | Liu D.,China International Water and Electrical Corporation
Applied Mechanics and Materials | Year: 2013

In the context of the low-carbon economy, economic benefits evaluations for power generation projects focus on the financial benefits and emphasize on the benefit from carbon-emission reduce. Thus, this paper firstly built an economic benefits evaluation index system for power generation projects based on low-carbon financial benefits and carbon-emission reduction efficiency. Then, it established an improved TOPSIS evaluation model based on orthogonal projection method and combination weighting which is determined by AHP subjectively and variation coefficient method objectively. Finally, the empirical analysis of wind power projects' constructions verified the feasibility and effectiveness of the evaluation model using that new method © (2013) Trans Tech Publications, Switzerland.


Li C.,Renmin University of China | Ye C.,North China Electrical Power University | Mou L.,China International Water and Electrical Corporation
Advanced Materials Research | Year: 2013

Under the background of low-carbon economy, it is necessary to modify and improve the existing economic benefits evaluation system for the construction projects of power generation industries. This paper firstly built an economic benefit evaluation index system for power generation projects based on low-carbon financial benefits and carbon-emission reduction efficiency. Then, it established an economic benefits evaluation model which uses entropy and AHP to determine combined weights, and Gray Relation Method for comprehensive evaluation. Finally, the empirical analysis of the construction of wind power projects verified the feasibility and effectiveness of the evaluation model. © (2013) Trans Tech Publications, Switzerland.


Quan M.,Nanjing University | Li H.,China International Water and Electrical Corporation
2011 International Conference on System Science, Engineering Design and Manufacturing Informatization, ICSEM 2011 | Year: 2011

Overseas investment in hydropower enterprises has been quickly increased with a rush, taking an important position in foreign direct investment for China. The Chinese investments in hydropower enterprises are mainly focused on Asian, African, and South American markets, especially typical of a relatively large market in Africa. The undertaking of overseas hydropower projects in the way of BOT in overseas hydropower investment have been more and more welcomed by hoar countries and particularly by developing countries. While the investment in BOT hydropower projects is generally large, certain risk exists at the same time. On this account, this article has analyzed the risk degrees for one of the African regional hydropower projects through fuzzy comprehensive analytic method. The analysis of instance shows the result concluded through this method is objective and reasonable, which can be widely applied to BOT hydropower projects in African. © 2011 IEEE.


Shi Z.-N.,Zhejiang University | Ran Q.-H.,Zhejiang University | Wu X.-S.,Zhejiang University | Chen H.-J.,China international water and Electrical Corporation
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | Year: 2014

Pl-ot-scale laboratory experiments were conducted to study the impacts of different rainfall locations, as well as the related rainfall properties, on the hillslope soil erosion process. Three scenarios with different rainfall location were considered. The results showed that: peak discharge of both sediment and runoff decreased significantly as the rainfall getting farther from the outlet, and the erosion amount kept decreasing for the successive experiments. Both the largest value and the maximum decrease, between successive experiments, of peak sediment discharge occurred when rainfall is 2 m away from the outlet. Total sediment discharge was heavily influenced by rainfall intensity, while rainfall location played an important role when the intensity was weak. For the first experiment during each successive run, sediment concentration decreased as the rainfall getting farther from the outlet. Content of sand in the eroded material was significantly lower than the original soil composition on slope. On the whole, sediment concentration process curve in experiments of 3 m rainfall location reached stable state earlier than other scenarios, and resulted in the minimum standard deviation for the gradation of eroded material.


Zhao R.-D.,China University of Petroleum - East China | Liu X.,China University of Petroleum - East China | Liu X.,China International Water and Electrical Corporation | Ma S.,China University of Petroleum - East China | And 2 more authors.
Dianji yu Kongzhi Xuebao/Electric Machines and Control | Year: 2010

To realize vector control for direct-driven permanent magnet synchronous generators(PMSG) in wind energy generation system without position and speed sensors, simplified Kalman Filter(SKF) was applied to estimate rotor position and speed in this paper. The rotor position and speed were chosen as state variables, two-phase stator current was chosen as input. Discrete state estimation model of PMSG based on SKF was built up, and sensorless vector control was implemented using rotor flux oriented control strategy. Simulation results show that rotor position and speed can be precisely estimated by using this method. Dynamic and steady state performances are good. Maximum power point tracking(MPPT) control is also achieved based on the method.

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