Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Mark MacAlpine"'
Publikováno v:
IEEE Electrical Insulation Magazine. 30:42-50
Icing of transmission lines due to extreme weather conditions has caused many failures in power networks worldwide [1]. As China has much of its land 2,000 m above sea level, intense snow and ice storms at this altitude have caused significant losses
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 19:1325-1334
Conductor galloping on overhead transmission lines can be a major problem and the interphase spacers is a countermeasure which has been found to be effective. There is, however, little theoretical basis for their use and for defining their design par
Autor:
Xiaobo Meng, Guanjun Fu, Zhicheng Guan, Lei Hou, Mark MacAlpine, Baoqiang Sun, Yong Chen, Wei Hu, Liming Wang
Publikováno v:
Mechanical Systems and Signal Processing. 30:393-406
Ice-shedding on a UHV overhead transmission line was simulated by releasing lumped loads from it. The resulting oscillations were compared with those from a simulation program for a multi-span line. The damping parameter in the simulation program was
Autor:
Shuwei Wan, Liming Wang, Jifei Zhang, Deming Yu, Fangdong Chen, Xingming Bian, Lan Chen, Lin Zhang, Mark MacAlpine
Publikováno v:
Journal of Electrostatics. 70:339-345
The use of helicopters as platforms equipped with infrared and UV detection, digital cameras and other inspection equipment is an effective method of increasing the efficiency and effectiveness of transmission line inspection. However, as a 'floating
Autor:
Xiaobo Meng, Mark MacAlpine, Liming Wang, Shuzhen Zhao, Zhicheng Guan, Wenjun Yao, Xingming Bian, Deming Yu
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 18:1767-1778
The effects of corona-generated space charge on the resultant electric field near a conductor were determined both for a simulated test line and a corona cage, since both are used in predicting the corona behavior of EHV and UHV transmission lines. P
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 18:739-744
The dc arcing performance of composite insulators with contaminated surfaces has been investigated at high altitudes because of the program of building ±800 kV dc transmission lines in China, because much of their intended routes will be at relative
Autor:
Xiaoxing Wei, Zhidong Jia, Zhining Li, Zhicheng Guan, Yan Li, Mark MacAlpine, Zhihai Xu, Yuming Zhao
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 18:760-766
Considerable work has been done on preventing ice formation on insulators and the modification of the surface characteristics by increasing the contact angle and decreasing the adherent force have been tried with some degree of success. Heating by el
Autor:
Mark MacAlpine, Guanjun Fu, Lei Hou, Wei Hu, Xiaobo Meng, Baoqiang Sun, Liming Wang, Yong Chen
Publikováno v:
Cold Regions Science and Technology. 66:44-52
The dynamic effect of ice-shedding can cause mechanical damage and electrical faults due to the clashing of conductors. The ice-shedding problem is more serious on UHV lines as the quantity of bundled conductors and the cross-sectional areas of the c
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 17:1781-1786
In designing and constructing the first 750 kV double-circuit compact transmission line, much pioneering work is necessitated in the choice of tower, insulator strings and phase-to-phase spacers. In this paper the mechanical characteristics of three
Publikováno v:
HKIE Transactions. 15:30-35
The ability to monitor the level of clamping pressure on transformer windings, that is, the degree of winding looseness, is important in ensuring a high availability of electrical power and to prevent the high costs incurred by unexpected failures. I