Increase in Reliability of Line and Station by Arresters

通过避雷器提高线路和车站的可靠性

• 批准号: 11695061
• 负责人: NAITO Katsuhiko
• 金额: $ 3.01万
• 依托单位: Meijo University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11695061/
• 关键词: Surge arrester; Lightning failure rate; EMTP; Simulation; Physico-mathematical model; Voltage distribution; Temperature distribution; Optical electric sensor; 電界センサ

In order to increase the reliability of electric power supply in both Japan and Mexico, simulation of the effect of installation of lightning surge arresters on lightning failure of transmission lines, artificial contamination tests of substation arresters and so on were carried out under the cooperation of Japanese and Mexican researchers.The outline and results are as follows :1. Documents on lightning failure in Mexico was obtained and analyzed. Investigation of arresters installed on Mexican transmission lines was carried out. Also discussion on lightning failure and surge arresters were made.2. The effect of installation of surge arresters for a four-circuit transmission line on lightning failure rate was simulated using EMTP (Electromagnetic Transient Program). More desirable result could be obtained with small amount of arresters when installed at special positions.3. Laboratory experiments were carried out in order to obtain time variation of resistance of sections of wet two-unit stacked substation arresters during the drying process. Only one section of the arresters dried and the others remained wet.4. A physico-mathematical model of a two-unit stacked arresters was constructed. Assuming time variations of resistances obtained in 3 time variation of voltage distribution along the arresters and that of temperature were calculated. It was found that the voltage across the dried part of the arresters is rather high. However, there is a little possibility of the ZnO elements failing thermally since its temperature is not so high.5. From literatures, optical electric sensor has proved to be suitable for measuring voltage distribution along an arrester housing. Consequently, a prototype of the measuring system with the sensor was made and its basic operation was confirmed.

为提高日墨两国电力供应的可靠性，在日墨两国研究人员的合作下，开展了雷电避雷器安装对输电线路雷击故障影响的模拟、变电站避雷器人工污染试验等工作。对安装在墨西哥输电线路上的捕捉器进行了调查。并对雷击故障和避雷器进行了讨论。利用EMTP(电磁暂态程序)对四回输电线路安装避雷器对雷击故障率的影响进行了仿真研究。在特殊位置安装少量避雷器可以获得更理想的效果。为获得湿式双单元堆叠式变电站避雷器在干燥过程中截面电阻的时间变化，进行了实验室试验。只有一段捕捉器是干的，其余的都是湿的。建立了两单元叠层式避雷器的物理数学模型。假定在3个时间段内获得的电阻随时间变化，计算了电压沿避雷器的分布和温度的时间变化。结果发现，避雷器干燥部分的电压较高。但是，由于氧化锌的温度不是很高，所以它也有可能发生热失效。文献证明，光电传感器适用于避雷器外壳的电压分布测量。在此基础上，制作了带有该传感器的测量系统样机，确定了系统的基本工作原理。

项目成果

亀井富久 他: "汚損湿潤過程における酸化亜鉛避雷器の内部素子の熱的挙動"電気関係学会東海支部連合大会講演論文集No.98. (1999)

Tomihisa Kamei 等人：“氧化锌避雷器内部元件在结垢和润湿过程中的热行为”，日本电气工程师东海分会会议记录，第 98 期。(1999 年)

K.Takenaka et.al.: "Measurement method of voltage distribution along arrester surface by using optical electric sensor"Conference of Tokai Branch of IEEJ. No.99. (2000)

K.Takenaka等人：“使用光电传感器测量沿避雷器表面的电压分布的方法”IEEJ东海分会会议。

Marcos Moreno 他: "Simulation of behavior of metal oxide arresters under contamination"電気関係学会東海支部連合大会講演論文集. No.82. (2000)

Marcos Moreno 等人：“金属氧化物避雷器在污染情况下的行为模拟”电气相关协会东海分会会议记录（2000 年）。

M.Moreno et.al.: "Simulation of behavior of metal oxide arresters under contamination"Conference of Tokai Branch of IEEJ. No.94. (2000)

M.Moreno 等人：“污染下金属氧化物避雷器行为的模拟”IEEJ 东海分会会议。

T.Tekenaka et.al.: "Measuring methods of voltage distribution along arrester surface"Conference of IEEJ. (to be presented). (2001)

T.Tekenaka 等人：“沿避雷器表面的电压分布的测量方法”IEEJ 会议。