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Determination of Dangerous Region of the Electromagnetic Pollution Caused by the Electric Fields around Power Line

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Determination of Dangerous Region of the Electromagnetic Pol...

1998 International Conference on Communication Technology

作者： gao yougang Yu Lifang Beijing Univ.of Posts ＆ Telecom.

ISBN: (纸本)7800908275

＜正＞This works gives the general formula for calculating the electric fields around a 3-Φsymmetrical power transmission line when the heights of its conductors are different from each other:It gives also the method for calculating the electric fields around single phase ＆ 3-Φasymmetrical *** minimum permissible separation distance between the power line ＆ resident has been given.

关键词： power overhead lines electric fields transmission line theory safety health hazards personnel dangerous region electromagnetic pollution power line electric fields symmetrical power transmission line conductor heights single phase lines 3-/spl Phi/ asymmetrical lines 3-phase asymmetrical lines minimum permissible separation distance resident maintenance personnel safety

The Electromagnetic Problems of a Cylinder or Elliptic Cylinder with Infinite Axial Slits and Others

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The Journal of China Universities of Posts and Telecommunications 1998年第1期5卷 71-71,75页

作者： Wan Lixi directed by gao yougang

The electromagnetic scattering, leaking and coupling from a cylinder with an infinite axial slit have been investigated by many authors. However, they have not obtained strict closed form solutions. Almost all of the papers only reported the method for the simplest problems. For slight complicated problems, such as the scattering, leaking or coupling from a cylinder with infinite axial slits or with arbitrary width of axial slits, the former authors have only discussed formally or even not discussed because their methods were inconvenient. In addition, the problems of the EM scattering, leaking or coupling from an elliptic cylinder with infinite axial slits, which can be used wildly in practice based on its easily variable shape, have not be solved. It is imaginable that to solve these problems is more difficult, because many authors were unfamiliar with Mathieu Functions. Meanwhile we have not had a completed Mathieu Function system as the study for Mathieu Function have been processing aiming to establish a completed system just like Bessel Function system. However, if people make use of some method and technique as well as the knowledge of Bessel Functions, the problem can be studied. In this theory, the author has studied strictly the electromagnetic problems (scattering, leaking and coupling) of an elliptic cylinder as well as a cylinder with infinite axial slits, and obtained strict closed form solutions. The train of thought is: (1) elliptic Cylinder by using separation of variables in elliptic coordinates to find the field expressions in each domain, matching them on boundary to obtain a dual series equation system, then letting the convenient auxiliary functions to change the dual series equation system to integral equations, making use of WKBJ Method to draw the singular kernel from the integral equations, we finally obtain a singular integral equations to be able to be solved by the theory of singular integral equation. (2) cylinder by using separatio

关键词： electromagnetic scattering electromagnetic leaking electromagnetic leaking axial slit

Electromagnetic Noise & Interference

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Electromagnetic Noise & Interference

作者： gao yougang Beijing University of posts&Telecom

*** Sources & Environment,Scattering Dong Jiping & gao yougang[2001]has studied electromagnetic radiation of the finite moving *** gave some formulas for calculating EM radiation of rectangular source & disc source. L...

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General Chairman’s Message

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General Chairman’s Message

2002 3rd International Symposium on Electromagnetic Compatibility

作者： gao,yougang

＜正＞It is my great pleasure to welcome friends from home ＆ abroad to attend the Third International Symposium on EMC,held in Beijing,China （EMC’2002/Beijing）,I am very pleased that so many international ＆ national experts,scholars ＆ scientists from different countries and regions have found their way to Beijing to make academic communications ＆ discussion on the EMC technology.

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Simulation of nerve action potential under different temperature

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Simulation of nerve action potential under different tempera...

The Fifth Asia-Pacific Conference on Environmental Electromagnetics

作者： Xiao Jiang Dan Shi Yuanmao Shen yougang gao (Beijing University of Post and Telecommunication) IBM Thomas J. Watson Research Center China

ISBN: (纸本)9781424443444

＜正＞Nerve cells under different temperature show various characteristics when they are stimulated and generate action potential, the principal ions involved in the action potential such as sodium and potassium cations also present different possibility to pass through the nerve membrane as well,higher temperature results in a shorter time for this reversible *** purpose of this study is to find out the relationship between the temperature and the waveforms that action potential *** also explored the effect that temperature brings to the ion gate conductance,especially on sodium and potassium. Simulation results are in good agreement with the known *** method of this work could be applied to acupuncture and moxibustion as well.

关键词： nerve cell lumped circuit simulation potential action temperature

CORRELATION INVESTIGATION BETWEEN CONTACT APPROACH SPEED OF HANDHELD METAL ROD AND DISCHARGE PARAMETERS FROM CHARGED HUMAN BODY

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Journal of Electronics(China) 2008年第3期25卷 384-388页

作者： Ruan Fangming Fujiwara Osamu gao yougang Institute of Electromagnetic Compatibility Beijing University of Post ＆ Telecommunications Beijing 100876 China School of Physics ＆ Chemistry Guizhou NormaI University Guiyang 550001 China Graduate School of Engineering Nagoya Institute of Technology Gokiso-cho Showa-ku Nagoya 466-8555 Japan

Characteristic measurement of contact discharge currents are made through a hand-held metal rod from charged human body. Correlation coefficients are obtained, through Statistic Package for Social Science (SPSS), for various charge voltages, which is based on the effect test of electrode contact approach speeds on discharge current parameters of current peaks, maximum rising slope and spark lengths. Discharge parameters at charge voltage 300V are independent on approach speed. For charge voltages equal to and higher than 500V, the contact approach speed has strong positive cor- relation with discharge parameters of the peak current and the maximum rising slope, whereas has strong negative correlation with the spark length.

关键词： ElectroStatic Discharge (ESD) Metal rod Discharge current Contact approach speed Statistical correlation

Improvement on Superabsorption Technique and Numerical Validation

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Improvement on Superabsorption Technique and Numerical Valid...

1999 International Conference on Computational Electromagnetics and Its Applications(ICCEA’99)

作者： Ma Shuangwu gao yougang Beijing University of Posts and Telecom

＜正＞A method to improve super absorption technique and make it more effective in FDTD algorithm is proposed in this *** tests are *** with original technique,new algorithm has better performance.

ISBN: (纸本)0780358023

关键词： FDTD Absorbing Boundary Condition Superabsorption Technique

The Harmful Effect on Optical Cable From External Electromagnetic Environment

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The Journal of China Universities of Posts and Telecommunications 1994年第1期1卷 1-6页

作者： gao yougang (Department of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100088, P. R. China)

There is a harmful effect on optical cable in a dangerous electromagnetic environment. The optical cable ed he affected by high-intensity electromagnetic impulse due to temperature rise. This paper will discuss these effects and introduce some protection measures. Finally, we point out other ef fects on optical cable from moisture, nuclear radiation and dangerous industrial environment.

关键词： Electromagnetic environment Electromagnetic effect Electromagnetic interference

PS-600／700测试系统校正与放电参数对电极速度的相关性研究

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仪器仪表学报 2008年第5期29卷 959-963页

作者：阮方鸣高攸纲贵州师范大学理学院贵阳550001 北京邮电大学电磁兼容研究所北京100876

电极向靶运动速度的测量精度和可靠性是研究放电参数与电极运动速度关系的基础。基于实测数据,为日本小野PS-600/700测试系统的加速度计设计校正方法,提出一种准确的经验公式并加以验证,为带电人体手握金属小棒电极,以一定速度向靶放电... 详细信息

电极向靶运动速度的测量精度和可靠性是研究放电参数与电极运动速度关系的基础。基于实测数据,为日本小野PS-600/700测试系统的加速度计设计校正方法,提出一种准确的经验公式并加以验证,为带电人体手握金属小棒电极,以一定速度向靶放电过程中,电极速度与放电强度参数相关性研究提供了前提条件。研究结果表明,放电电极相互接近的速度与放电电流峰值、放电电流上升斜率峰值具有强正相关性,而与放电弧长则有强负相关性。带电体电压小于300V时电极速度影响可不考虑。

关键词：静电放电(ESD) 校正加速度计放电参数相关