DL.T 5224-2014 高压直流输电大地返回系统设计技术规程-畅读网

　　　　

DL.T 5224-2014 高压直流输电大地返回系统设计技术规程

作者：电力规划设计总院

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科学技术 >> 医学/建筑

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内容简介:

本标准适用于±660kV及以下电压等级单极和双极运行的高压直流输电系统中一次性建设的陆地和海岸接地极、架空接地极线路和辅助设施的设计、测试。本标准共10章和9个附录，主要内容包括总则，术语和符号，系统和技术条件，接地极址，电极形式及布置形状，电极尺寸，接地极材料，导流系统及辅助设施，对附近设施的影响及防护，接地极线路等。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 47 LIMIT 1 [ RunTime:0.000755s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001122s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.001193s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1748133776 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.613019s ]

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