Search

Your search keyword '"Gao, Liangyu"' showing total 3 results
Start Over Author "Gao, Liangyu" Topic electronic engineering
3 results on '"Gao, Liangyu"'

1. On-line temperature monitoring in insulation material for HV devices

Author

Gao Liangyu, Lv Chunsheng, Wang Zhongkai, and Jin Lijun

Subjects
Data processing, Temperature monitoring, Engineering, Assembly language, Simulation test, business.industry, Temperature measurement, Line (electrical engineering), Automotive engineering, Transducer, Power integrated circuits, Electronic engineering, business, computer, computer.programming_language
Abstract

Two kinds of temperature transducers and several data process algorithms are researched in this paper in order to realize online temperature monitoring in insulation material for HV devices. And their sensibility is compared; assembler programming is also realized. The results of simulation test proved that the selected temperature transducer and data processing method has higher sensibility better stability and higher accuracy. So this device has the value of engineering application.

Published
2004

2. On-line detection of PD in GIS based on external UHF sensing

Author

Gao Liangyu, Jin Lijun, Shen Yuzhuo, and Liu Shijie

Subjects
Engineering, Ultra high frequency, business.industry, Electronic engineering, Phase analysis, business, Signal, Line (electrical engineering), Remote sensing, Power (physics), Voltage
Abstract

The measurement includes the UHF detection, conventional partial discharges (PD) measurement and the power phase analysis. The corona discharge characteristic of model GIS is researched. Then discharge level of UHF signal is estimated based on comparing of UHF detection and the conventional PD measurement.

Published
2004

3. Effect of ferrocene derivatives on the dielectric properties of polyethylene

Author

Wang Li-Heng, Qiu Bin, Huang Gen-Long, Gao Liangyu, Tu Demin, and Liu Yue

Subjects
chemistry.chemical_classification, Materials science, Electrical treeing, Polymer, Dielectric, Polyethylene, Thermal conduction, chemistry.chemical_compound, Chemical engineering, chemistry, Ferrocene, Electronic engineering, Thermal stability, Dielectric loss
Abstract

In order to improve the stabilization of ferrocene, two kinds of ferrocene derivatives have been synthesized. The effects of ferrocene and its derivatives on dielectric properties of PE and XLPE (cross-linked polyethylene) are investigated in detail. The test results show that the initiation voltage of treeing and the breakdown strength of PE are enhanced by 61% and 10%, respectively, when the content of ferrocene derivative B is 1%. Using the ferrocene derivative B not only increases the treeing initiation voltage and inhibits the growth of treeing, but also increases the breakdown strength in PE and XLPE. The dielectric loss of PE and XLPE blended with ferrocene derivative B is permissible for HV plastic cable. The thermal stability of ferrocene derivative blended in PE is much better than that of ferrocene. Through measurements of the TSC (thermally stimulated current) of the samples and the relation between electric conduction and electrical stress, the mechanism of treeing inhibition by additives is investigated. >

Published
2002

Catalog

Books, media, physical & digital resources
See catalog results