周远翔
高电压与绝缘技术、电磁生物与电工环保技术等领域
个性化签名
- 姓名:周远翔
- 目前身份:
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
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学科领域:
高电压工程
- 研究兴趣:高电压与绝缘技术、电磁生物与电工环保技术等领域
周远翔,男,1966年12月出生于福建省莆田市,清华大学教授,高电压实验室主任。1988年清华大学电机系毕业获学士学位,1991年中国电力科学研究院毕业获硕士学位,1991-1995年中国电力科学研究院工程师,1999年秋田大学获日本电气电子工学博士学位,1999-2000年日本工业技术院(AIST)资源与环境综合技术研究所NEDO研究员。现主要从事高电压与绝缘技术、电磁生物与电工环保技术等领域的教学与科研工作。入选2004年教育部新世纪优秀人才支持计划,获省部级科技进步二等奖等多项科研奖励。主要学术兼职:IEEE和日本JIEE会员,中国物理学会静电专业委员会委员,中国电工技术学会电磁发射专业委员会委员。
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1013
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成果数
20
【期刊论文】An investigation on pulse discharge effect on the surface chemical ransformation of fly ash
周远翔, Yuanxiang Zhou, M. ifuku *, G. Hajos, S. Asada, H. Katoh
Thin Solid Films 386(2001)195-199,-0001,():
-1年11月30日
Non-thermal plasma has been widely investigated to apply to environmental protection. The effectiveness of electrical discharge technology on decomposition and transformation of toxic gases has been widely studied, while its influence on the toxic substances in fly ash is not clear. In this paper, the surface chemical transformation of fly ash from electrostatic procipitators has been studied by surface pulse discharge. A surface mechanical change and a destruction of powder particles were visible after discharging. This indicates that the pulse discharge causes an effective desturction of the fly ash powder and its particles. The composition analysis showed that volatile organic compound (VOC) content in sampies decreases after discharging. A positive pulse discharge showed a higher decrease in VOC content than that of a negative one did. We concluded that by using the surface pulse discharge, especially in the case of positive pulse discharge, the non-thermal plasma is also effective on decomposition and transformation of toxic substances in fly ash, which reaches a 51% VOC decomposition effectiveness.
VOC, Fly ash, Plasma, Surface chemical transformation
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【期刊论文】Effects of crystallinity on the space charge properties of polyethylene
周远翔, Ninghua Wang a, Yuanxiang Zhou a, *, Hongbin Liu a, Bin Gao a, Xidong Liang a, Zhicheng Guan a, Tatsuo Takada b
Journal of Electrostatics ▍(▍▍▍)▍▍▍-▍▍▍,-0001,():
-1年11月30日
In this paper, three kinds of annealing methods with different cooling rates are used to prepare low-density polyethylene (LDPE) samples with different microstructure in crystal-linity. The effects of crystallinity on space charge properties are investigated. It was found that homo-charges are easier to accumulate inhigh rate cooling sample and hetero-charges are easier to accumulate near cathode in low rate cooling sample. It was also found that charge movement and neutralization oceurs with the increases of the applied field and the voltage appliying duration. Based on these results, the influence of crystallinity on spae charge accumulation is emphasized.
Space charge, Polyethylene, Annealing, Crystallinity
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【期刊论文】Inactivation effects of electrostatic field on Bacillus subtilis
周远翔, Dan Bu, Yingyan Liu, Yuanxiang Zhou *, Zhe Xu, Lixin Guo, Baile Zhang, Xidong Liang, Zhicheng Guan
Journal of Electrostatics ▍(▍▍▍)▍▍▍-▍▍▍,-0001,():
-1年11月30日
In order to study the inactivation effects of electrostatic field of electret films on Bacillus subtilis, a plane-plane electrode system was used to simulate the electrie field of the electret films and the viability of B. sublilis affected by electrostatic field for different applying durations was investigated. It was found that the survival ratio of B. subtilis can be considerably affected by the field and duration. It was also found that the viability of bacillus decreases with the increase of the duration. In addition, the comparative survival ratio (CSR) of B. subtilis decreases to 35% even during a short duration as the applied field reaches an enough high value of more than 15kV/cm. These indieated that the uniform field inactivated the viability of B. subilis availability. Based on the inaction effect of the applied field on the B subtilis, the effectiveness of chared polypropylene films on the inactivation of B. subtilis was measured and discussed.
Electrostati field, Inactivation, Survival ratio, Electret
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【期刊论文】Investigation on luminescence and Nox removal by pulse corona discharges
周远翔, Ping Yan a, Masanori Fujiwara a, Yuanxiang Zhou b, *, Masayoshi Ishida c
Journal of Electrostatics 51-52(2001)266-271,-0001,():
-1年11月30日
In a streamer dominated pulse corona the energetic electrons can interact with the gas molecules and produce radicals. Emission of second positive band (SPB) of the nitrogen, which was considered to orrespond to local yield of N radical, was monitored in this study for analyzing Nradical effect on removal of itrogen oxidex (NOx) from exhaust gases. It was found that the length of high luminous region (HLR) is related to energy efficiency of NOx removal. It was also testified that total emission intensity of SPB is linearly proportional with NOx removal in No/N2 mixture gas. Analysis of experimental data shows that the NOx removal energy efficiency is smaller when pulse width is longer. The energy efficiency also decreases with the increase of injected power and length of HLR, respectively. It was assumed that the local concentrated production of N radical in HLR is not effectively used for NO removal in the condition of low initial NOx concentration. It is concluded that the luminescence analysis provides a good method to understand NOx removal process in pulse discharge co-rona.
Pulse discharge, Corona, Nox removal, Luminescence measurement, Injected power
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【期刊论文】Polarity reversal charging of polypropylene films underDC corona discharge
周远翔, Baile Zhang a, Yuanxiang Zhou a, *, Ninghua Wang a, Xidong Liang a, Zhicheng Guan a, Tatsuo Takada b
Journal of Electrostatics ▍(▍▍▍)▍▍▍-▍▍▍,-0001,():
-1年11月30日
In this paper, a needle-plane electrode system and polypropylene (PP) films were used to study the DC corona charging of polymers. It was found that the charges injected into the PP films sometimes show different polarity to the applied DC voltage, called polarity reversal charging, which may results in invalidation charging. The pulsed electro-acoustic (PEA) space charge measurement showed that charges of different polarities have been injected into the PP films' bulk, simultaneously. From these results, a mechanism of two charging processes of high-field inection and return-stroke injection has been introduced here. We presumed that the return-stroke injection can be boosted with the increase of corona voltages and thus reduces the net charge as well as even change the polarity of charges injected.
Polypropylene, Corona charging, Polarity reversal, Space charge
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【期刊论文】polarity reversal discharge on polypropylene surface applied with nanosecond pulses
周远翔, Yuanxiang Zhou, Baile Zhang, Ping yah, Ninghua Wang, Yinan Wang, Xidong Ling and Zhicheng Guan
,-0001,():
-1年11月30日
In this paper, a needle-plane electrode system and non woven polypropylene filters were used to stuy the space charge formation on the surace of dielectrics by nanosecond pulse discharge. Ordinaril, the charging of polymers shows the same polarity as the voltage applied. A novel discovery of polarity reversal discharge was found that the accumulated space charges on the surface of polymers show a different polarity against the applied pulse. It was found that a higher positive pulse3 peak leads to easier polarity reversal charge accumulation in polymers. It was also found that a negative pulse causes a positive charge accumulation when the peak is sufficient high and the pulse width is sufficient small. In addition, a negative pulse will produce the same polarity of charges on the surface of polymers when the width of pulse is larger than 200 ns. A novel mechanism of two charging processes of high filed injection and return stroke injection has been putted forward here to fit the polarity reversal charging phenomena. We concluded that the polarity reversal charging of polymers can be inherently related to the discharge in gases and the needle-plane electrode system.
pulse discharge,, polypropylene,, charge accumulation
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周远翔, 关志成, 王黎明, 刘瑛岩, 周军
HIGH VOLTAGE ENGNEERNG Vol 28 No.2 Feb. 2002,-0001,():
-1年11月30日
高海拔区750KV输电线路在污秽较严重地区若采用电瓷或玻璃绝缘子,将导致串长过长,杆塔尺寸过大,工程造价明显提高。采用复合绝缘子是一个技术先进又切实可行的选择。本文分析了采用复合绝缘子的先进性和可行性问题,并提出了应关注的几个问题。
高海技 750KV输电线路 绝缘子 复合绝缘子
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周远翔, 贾瑞君、周远翔
,-0001,():
-1年11月30日
通过检测变压器油中溶解氢气含量的变化,可以发现充油高压电气设备早期故障。为了实现油中氢气的测试,电力工业部电力科学研究院新开发和研制了Dog-1000型变压器油中溶解氢气在线监测仪。本文介绍了该监测仪的工作原理及电路设计,同时论述了氢气在线监测的基本思想。监测仪经试验室测试和现场运行表明,仪器工作稳定可靠,满足在线监测的要求。
氢气,, 在线监测,, 变压器
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周远翔, 孙昌富, 李光范, 梁曦东, 关志成
变压器,2001,38(9):42~45,-0001,():
-1年11月30日
局部放电测量技术作为检验电气设备内部绝缘好坏的有效手段得到越来越普遍的应用。采用“多端测量,多端校正”及电气一超声联合测试,可准确发现并确定现场安装后的电力变压器内部存在的缺陷及其位置。试验结果表明,在现场进行电力变压器的局部放电试验,对提高安装质量,防止设备损坏及保证电网的安全运行将会起到积极的作用。
变压器, 局部放电, 超声波定位
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【期刊论文】Temperature-independent dc conduction in BaTiO3-based ceramic capacitors
周远翔, Y.X. Zhou a) and N. Yoshimura
JOURNAL OF APPLIED PHYSICS VOLUME 86, NUMBER 4 15 AUGUST 1999,-0001,():
-1年11月30日
In this work, measurements of temperature-dependent dc conduction current in BaTiO3-based multilayer ceramic capacitors have been made. It was found that there is tunnel-like conduction current near Curie temperature of BaTiO3 where the current showed a temperature-independent characteristic. For the study of this abnormal phenomenon, the structural nature of insulating solids of practical importance is emphasized. A new concept has been introduced to explain the positive temperature coefficient anomaly in BaTiO3-based ceramic dielectrics. It was presumed that a Schottky process domintes the conduction current at the Curie temperature. It was also assume that the Schoottky process is controlled by the phase transition of BaTiO3-based ceramics near the Curie temperature where the effective work function. which changes with the temperature, is inherently related to the density of the paraelectric cubic crystals. Based on the proposed model, it was found that the calculated results are accurately correlated with the experimental ones.
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