CAJ | 학술논문

为了论证长治-南阳-荆门1000 kV特高压交流输电线路煤矿采动影响区拟采用的分体型杆塔方案是否满足防雷保护要求,对分体型杆塔的中相和边相绕击屏蔽性能以及反击耐雷性能进行了研究计算.结果表明:ZBF1和JTF1分体型杆塔的中相不会发牛绕击闪络;针对JTF1型杆塔地线对外侧跳线屏蔽较差的情况,推荐在JTF1型杆塔外侧跳线横担前端和其塔顶上各安装一支0.5 m高的避雷针来保护跳线段;JTF1分体型杆塔的中相不会发生反击闪络;为了使特高压分体型杆塔的反击耐雷水平＞200 kA,推荐ZBF1塔工频接地电阻应控制在＜10Ω,JTF1塔工频接地电阻应控制在＜15 Ω.
위료론증장치-남양-형문1000 kV특고압교류수전선로매광채동영향구의채용적분체형간탑방안시부만족방뢰보호요구,대분체형간탑적중상화변상요격병폐성능이급반격내뢰성능진행료연구계산.결과표명:ZBF1화JTF1분체형간탑적중상불회발우요격섬락;침대JTF1형간탑지선대외측도선병폐교차적정황,추천재JTF1형간탑외측도선횡담전단화기탑정상각안장일지0.5 m고적피뢰침래보호도선단;JTF1분체형간탑적중상불회발생반격섬락;위료사특고압분체형간탑적반격내뢰수평＞200 kA,추천ZBF1탑공빈접지전조응공제재＜10Ω,JTF1탑공빈접지전조응공제재＜15 Ω.
UHV transmission line from Changzhi via Nanyang to Jingmen adopts divided-type towers ZBF1 and JTF1 in mining-affected areas to verify whether the relative parameters of divided-type tower satisfy the requirement of lighting protection,for divided-type towers shielding failure performance and back flashover performance of intermediate phase and outer phase are calculated.The obtained results showed that for divided-type towers ZBF1 and JTF1 shielding failure would not occur at their intermediate phases;this paper recommended that one shield wire of 0.5 m height be installed at the front of the outer jumper crossarm and the top of the tower JTF1 respectively,aiming at the condition that the shield wires installed at divided-type towers JTF1 had worse shielding performance for outer jumpers;for the tower JTF1,back flashover would not occur at its intermediate phase;this paper recommended that the earth resistance of the tower ZBF1 be lower than 10 Ω and that of the tower JTF1 lower than 15 Ω,to ensure the lightning withstanding level of back flashover be over 200 kA.