1、2011.1.4 检索 117 条 “扬州大学”为著者单位显示 1 条，共 117 条作者: Gong, Y (Gong Yi); Cheng, JL (Cheng Jilin); Zhang, LH (Zhang Lihua); Zhang, RT (Zhang Rentian)编者: Wahid, MA; Sheriff, JM; Sidik, NAC; Samion, S标题: Study on Operation Optimization of Pumping Stations 24 Hours Operation under Influences of Tides and Peak-
2、Valley Electricity Prices来源出版物: 10TH ASIAN INTERNATIONAL CONFERENCE ON FLUID MACHINERY, 1225: 137-146 2010丛书标题: AIP Conference Proceedings语言: English文献类型: Proceedings Paper会议标题: 10th Asian International Conference on Fluid Machinery会议日期: OCT 21-23, 2010会议地点: Kuala Lumpur, MALAYSIA会议赞助商: Asian Fluid
3、Machinery Comm.; Inst Engineer Malaysia.会议主办方: Univ Teknologi Malaysia作者关键词: pumping station; single-unit pump; start up time; adjust blade angle; optimization摘要: According to different processes of tides and peak-valley electricity prices, this paper determines the optimal start up time in pumping
4、stations 24 hours operation between the rating state and adjusting blade angle state respectively based on the optimization objective function and optimization model for single-unit pumps 24 hours operation taking JiangDu No.4 Pumping Station for example. In the meantime, this paper proposes the fol
5、lowing regularities between optimal start up time of pumping station and the process of tides and peak-valley electricity prices each day within a month: (1) In the rating and adjusting blade angle state, the optimal start up time in pumping stations 24 hours operation which depends on the tide gene
6、ration at the same day varies with the process of tides. There are mainly two kinds of optimal start up time which include the time at tide generation and 12 hours after it. (2) In the rating state, the optimal start up time on each day in a month exhibits a rule of symmetry from 29 to 28 of next mo
7、nth in the lunar calendar. The time of tide generation usually exists in the period of peak electricity price or the valley one. The higher electricity price corresponds to the higher minimum cost of water pumping at unit, which means that the minimum cost of water pumping at unit depends on the pea
8、k-valley electricity price at the time of tide generation on the same day. (3) In the adjusting blade angle state, the minimum cost of water pumping at unit in pumping stations 24 hour operation depends on the process of peak-valley electricity prices. And in the adjusting blade angle state, 4.85%si
9、milar to 5.37% of the minimum cost of water pumping at unit will be saved than that of in the rating state.地址: Gong Yi; Cheng Jilin; Zhang Lihua; Zhang Rentian Yangzhou Univ, Dept Hydraul, Yangzhou 225009, Peoples R China通讯作者地址: Gong, Y, Yangzhou Univ, Dept Hydraul, 131 Jiangyang Middle Rd, Yangzhou
10、 225009, Peoples R China.电子邮箱地址: gongyi_; ; ; r_引用的参考文献数: 12被引频次: 0出版商: AMER INST PHYSICS出版商地址: 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USAISSN: 0094-243XISBN: 978-0-7354-0769-529 字符的来源出版物名称缩写: AIP CONF PROC来源文献页码计数: 10ISI 文献传递号: BRU31显示 2 条，共 117 条作者: Zhang, RT (Zhang Rentian); Z
11、hu, HG (Zhu Honggeng); Arnold, J (Arnold, Jaap); Yao, LB (Yao Linbi)编者: Wahid, MA; Sheriff, JM; Sidik, NAC; Samion, S标题: Development and Optimized Design of Propeller Pump System Inst Engineer Malaysia.会议主办方: Univ Teknologi Malaysia作者关键词: propeller pump; system; structure; development; optimal desig
12、n; witness model test; CFD摘要: Compared with vertical-installed pumps, the propeller (bulb tubular) pump systems can achieve higher hydraulic efficiencies, which are particularly suitable for low-head pumping stations. More than four propeller pumping stations are being, or will be built in the first
13、 stage of the S-to-N Water Diversion Project in China, diverting water from Yangtze River to the northern part of China to alleviate water-shortage problems and develop the economy. New structures of propeller pump have been developed for specified pumping stations in Jiangsu and Shandong Provinces
14、respectively and Variable Frequency Drives (VFDs) are used in those pumping stations to regulate operating conditions. Based on the Navier-Stokes equations and the standard k-e turbulent model, numerical simulations of the flow field and performance prediction in the propeller pump system were condu
15、cted on the platform of commercial software CFX by using the SIMPLEC algorithm. Through optimal design of bulb dimensions and diffuser channel shape, the hydraulic system efficiency has improved evidently. Furthermore, the structures of propeller pumps have been optimized to for the introduction of
16、conventional as well as permanent magnet motors. In order to improve the hydraulic efficiency of pumping systems, both the pump discharge and the motor diameter were optimized respectively. If a conventional motor is used, the diameter of the pump casing has to be increased to accommodate the motor
17、installed inside. If using a permanent magnet motor, the diameter of motor casing can be decreased effectively without decreasing its output power, thus the cross-sectional area is enlarged and the velocity of flowing water decreased favorably to reduce hydraulic loss of discharge channel and thereb
18、y raising the pumping system efficiency. Witness model tests were conducted after numerical optimization on specific propeller pump systems, indicating that the model system hydraulic efficiencies can be improved by 0.5%similar to 3.7% in different specified operational conditions.地址: Zhang Rentian;
19、 Zhu Honggeng Yangzhou Univ, Coll Hydraul Sci ; ; 引用的参考文献数: 11被引频次: 0出版商: AMER INST PHYSICS出版商地址: 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USAISSN: 0094-243XISBN: 978-0-7354-0769-529 字符的来源出版物名称缩写: AIP CONF PROC来源文献页码计数: 15ISI 文献传递号: BRU31显示 3 条，共 117 条作者: Zhu, HG (Zhu, Honggeng); Z
20、hang, RT (Zhang, Rentian); Deng, DS (Deng, Dongsheng); Feng, XS (Feng, Xusong); Yao, LB (Yao, Linbi)编者: Wahid, MA; Sheriff, JM; Sidik, NAC; Samion, S标题: Numerical Simulation of Tubular Pumping Systems with Different Regulation Methods来源出版物: 10TH ASIAN INTERNATIONAL CONFERENCE ON FLUID MACHINERY, 122
21、5: 162-168 2010丛书标题: AIP Conference Proceedings语言: English文献类型: Proceedings Paper会议标题: 10th Asian International Conference on Fluid Machinery会议日期: OCT 21-23, 2010会议地点: Kuala Lumpur, MALAYSIA会议赞助商: Asian Fluid Machinery Comm.; Inst Engineer Malaysia.会议主办方: Univ Teknologi Malaysia作者关键词: Tubular pumpin
22、g system; Energy performance; Blade-adjusting regulation; Variable speed regulation; Numerical analysis摘要: Since the flow in tubular pumping systems is basically along axial direction and passes symmetrically through the impeller, most satisfying the basic hypotheses in the design of impeller and ha
23、ving higher pumping system efficiency in comparison with vertical pumping system, they are being widely applied to low-head pumping engineering. In a pumping station, the fluctuation of water levels in the sump and discharge pool is most common and at most time the pumping system runs under off-desi
24、gn conditions. Hence, the operation of pump has to be flexibly regulated to meet the needs of flow rates, and the selection of regulation method is as important as that of pump to reduce operation cost and achieve economic operation. In this paper, the three dimensional time-averaged Navier-Stokes e
25、quations are closed by RNG kappa - epsilon turbulent model, and two tubular pumping systems with different regulation methods, equipped with the same pump model but with different designed system structures, are numerically simulated respectively to predict the pumping system performances and analyz
26、e the influence of regulation device and help designers make final decision in the selection of design schemes. The computed results indicate that the pumping system with blade-adjusting device needs longer suction box, and the increased hydraulic loss will lower the pumping system efficiency in the
27、 order of 1.5%. The pumping system with permanent magnet motor, by means of variable speed regulation, obtains higher system efficiency partly for shorter suction box and partly for different structure design. Nowadays, the varied speed regulation is realized by varied frequency device, the energy c
28、onsumption of which is about 3 similar to 4% of output power of the motor. Hence, when the efficiency of variable frequency device is considered, the total pumping system efficiency will probably be lower.地址: Zhu, Honggeng; Zhang, Rentian Yangzhou Univ, Coll Hydraul Sci r_; ; ; 引用的参考文献数: 9被引频次: 0出版商
29、: AMER INST PHYSICS出版商地址: 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USAISSN: 0094-243XISBN: 978-0-7354-0769-529 字符的来源出版物名称缩写: AIP CONF PROC来源文献页码计数: 7ISI 文献传递号: BRU31显示 4 条，共 117 条作者: Cheng, JL (Cheng, Jilin); Zhang, LH (Zhang, Lihua); Zhang, RT (Zhang, Rentian); Gong, Y (Gong, Yi);
30、 Zhu, HG (Zhu, Honggeng); Deng, DS (Deng, Dongsheng); Feng, XS (Feng, Xuesong); Qiu, JX (Qiu, Jinxian)编者: Wahid, MA; Sheriff, JM; Sidik, NAC; Samion, S标题: Optimal Operation of Variable Speed Pumping System in Chinas Eastern Route Project of S-to-N Water Diversion Project来源出版物: 10TH ASIAN INTERNATION
31、AL CONFERENCE ON FLUID MACHINERY, 1225: 169-175 2010丛书标题: AIP Conference Proceedings语言: English文献类型: Proceedings Paper会议标题: 10th Asian International Conference on Fluid Machinery会议日期: OCT 21-23, 2010会议地点: Kuala Lumpur, MALAYSIA会议赞助商: Asian Fluid Machinery Comm.; Inst Engineer Malaysia.会议主办方: Univ Te
32、knologi Malaysia作者关键词: Pumping system; Variable speed; Optimal operation; Electric price; S-to-N Water Diversion Project摘要: A dynamic planning model for optimizing operation of variable speed pumping system, aiming at minimum power consumption, was proposed to achieve economic operation. The No. 4 J
33、iangdu Pumping Station, a source pumping station in Chinas Eastern Route of South-to-North Water Diversion Project, is taken as a study case. Since the sump water level of Jiangdu Pumping Station is affected by the tide of Yangtze River, the daily-average heads of the pumping system varies yearly fr
34、om 3.8m to 7.8m and the tide level difference in one day up to 1.2m. Comparisons of operation electricity cost between optimized variable speed and fixed speed operations of pumping system were made. When the full load operation mode is adopted, whether or not electricity prices in peak-valley perio
35、ds are considered, the benefits of variable speed operation cannot compensate the energy consumption of the VFD. And when the pumping system operates in part load and the peak-valley electricity prices are considered, the pumping system should cease operation or lower its rotational speed in peak lo
36、ad hours since the electricity price are much higher, and to the contrary the pumping system should raise its rotational speed in valley load hours to pump more water. The computed results show that if the pumping system operates in 80% or 60% loads, the energy consumption cost of specified volume o
37、f water will save 14.01% and 26.69% averagely by means of optimal variable speed operation, and the investment on VFD will be paid back in 2 or 3 years. However, if the pumping system operates in 80% or 60% loads and the energy cost is calculated in non peak-valley electricity price, the repayment w
38、ill be lengthened up to 18 years. In Chinas S-to-N Water Diversion Project, when the market operation and peak-valley electricity prices are taken into effect to supply water and regulate water levels in regulation reservoirs as Hongzehu Lake, Luomahu Lake, etc. the economic operation of water-diver
39、sion pumping stations will be vital, and the adoption of VFDs to achieve optimal operation may be a good choice.地址: Cheng, Jilin; Zhang, Lihua; Zhang, Rentian; Gong, Yi; Zhu, Honggeng; Qiu, Jinxian Yangzhou Univ, Coll Hydraul Sci ; r_; gongyi_; ; ; 引用的参考文献数: 11被引频次: 0出版商: AMER INST PHYSICS出版商地址: 2 H
40、UNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USAISSN: 0094-243XISBN: 978-0-7354-0769-529 字符的来源出版物名称缩写: AIP CONF PROC来源文献页码计数: 7ISI 文献传递号: BRU31显示 5 条，共 117 条作者: Zhang, LH (Zhang Lihua); Cheng, JL (Cheng Jilin); Zhang, RT (Zhang Rentian); Gong, Y (Gong Yi)编者: Wahid, MA; Sheriff, JM; Sidik,
41、 NAC; Samion, S标题: Research on Optimal Operation by Adjusting Blade Angle in Jiangdu No. 4 Pumping Station of China来源出版物: 10TH ASIAN INTERNATIONAL CONFERENCE ON FLUID MACHINERY, 1225: 297-303 2010丛书标题: AIP Conference Proceedings语言: English文献类型: Proceedings Paper会议标题: 10th Asian International Confere
42、nce on Fluid Machinery会议日期: OCT 21-23, 2010会议地点: Kuala Lumpur, MALAYSIA会议赞助商: Asian Fluid Machinery Comm.; Inst Engineer Malaysia.会议主办方: Univ Teknologi Malaysia作者关键词: pumping station; adjusting blade angle; peak-valley electricity price; experimental optimization method; linear-integral programming;
43、 optimal operation摘要: A Nonlinear Programming Model for the optimal day-operation of multi-units pump in one pumping station by adjusting blade angle has been put out, where the peak-valley electricity prices is considered in this paper. The model takes the minimal operation cost of pump assembly as
44、 objective function. In the meantime, the periods are defined as stage variables. The blade angle and the number of the working-pumps are expressed as decision variables and the water volume pumped in one day as constraint condition. The problem is very difficult to be settled by regular methods. Th
45、is paper presents a new method which adopts experimental optimization method of adjusting blade angle in different periods and linear integral programming method to select the number of pumps. After applying the method to the optimal operation of Jiangdu No.4 pumping station, which is the source pum
46、p station of Eastern Route Project of South-to-North Water Diversion(Where there are seven pumps and the design flow rate of single-unit is 30.0m(3)/sec), we get the results which are as follows:(1) With the constraint conditions of typical tidal process which are average tidal levels from December
47、to February of next year, designed average pumping head of 7.8m, and the operation load at 100%,80%,60% of full-load(the water volume when the pumps working with the blade angle of 0 degree and the speed of 150r/min in full day), the relative energy-saving reaches 5.18%similar to 33.02% comparing wi
48、th the state of keeping the pump operating at its designed blade angle which is 0 degree when considering peak-valley electricity prices. While not considering the peak-valley electricity prices, the number is 1.96%similar to 9.71%, and less load corresponds to more cost-saving. (2) The key factory on deciding the operation state of pumps is electricity price when we consider the peak-valley electricity prices. All the pumps should be working and the blade angle should be in the largest state when at the valley price, while the number of the working pumps should be reduc
