介绍：
1.1 工程概况 Project Overview
项目名称： TDI联合装置厂区中压电缆敷设施工。Project name: TDI Train Plant Medium Voltage Cable Pulling Work.
本工程涉及三个变电站，分别是现有的220/35kV A472变电站、现有的35/10kV B301S变电站以及新建的35/10kV C581变电站，工作内容为三个变电站之间和从三个变电站接至MV用户的电力电缆、控制电缆、接地电缆的敷设。The project involves three substations, namely the existing 220/35kV A472 substation, the existing 35/10kV B301S the 35/10kV C581 substation and a new substation. This is the power, control and grounding cable pulling among three substations and for MV users connected to the three substations.
1.2 施工范围 Scope of Work
1) A472建筑（220/35kV变电站）出线回路：A472 Building(220/35kV substation) outlet circuit
由A472变电站引出3路35kV出线。其中：
一路引至B301S建筑（35/10kV变电站）原1#主变，原1#主变电缆将抽出，与新增4#主变连接；另两路引至35/10kV C581变电站1#主变和2#主变。回路采用FS-YJY-26/35kV-1*300mm2单芯电缆，直埋敷设。去C581的两路35kV线路，敷设时沿不同路径，以避免两回线路同时受损。Pull three 35V outgoings from A472 substation. Of which: The first outgoing is led to B301S Building (35/10kV substation) the original one # main transformer, pull the original one # main transformer cable out, and connect to the adding 4 # main transformer; the other two outgoings are led to 35/10kV C581 # 1 and substation 2 # main transformer. Use FS-YJY-26/35kV-1 * 300mm2 single-core cables for Loop and buried pulling. Two 35kV lines to C581 are laid along different paths to avoid damage of the two loops.
2) B301S建筑（35/10kV变电站）出线回路：B301S building (35/10kV substation) outlet circuit:
由B301S变电站引出7路10kV出线。全部引至B399中心制冷站。回路采用10kV截面为95mm2的三芯铠装电缆，由B301S南面现有的电缆井引出直埋至装置。Pull 7 10kV outgoings from B301S substation to B399central refrigeration station. Loop uses 10kV three-core armored cable with cross-section 95mm2 and pull out from the existing cable well in the south of B301S then buried lay to the device.
3) C581建筑（35/10kV变电站）出线回路：C581 building (35/10kV substation) outlet circuit:
由C581引出10路10kV线路，分别为A507的四台变压器，B551的两台变压器，B553TDA装置氢气压缩机2台，C521盐酸装置氯气压缩机1台，盐酸压缩机1台提供电源。其中，变压器回路采用10kV截面为185mm2的三芯铠装电缆，马达回路采用10kV截面为95mm2的三芯铠装电缆。以上电缆线路均沿规划路径埋地敷设。10 10kV lines led from C581 are used to supply power to A507's four transformers, B551 two transformers, B553TDA 2 sets of hydrogen compressor unit, C521 hydrochloric acid chlorine gas compressor unit, and hydrochloric acid compressor unit respectively. Among them, transformer circuit uses x 3-core armored cable with 10kV cross-section 185mm2, motor circuit uses three-core armored cable with 10kV cross-section 95mm2. All cable lines will be laid underground along the planning path.
4) 接地电缆回路：Ground cable loop:
从A472敷设一根95mm2裸铜线去C581，同时从C581敷设四根95mm2裸铜线，分别引至B551、A507、B553和C521，作等电位联结。以上电缆线路均沿规划路径埋地敷设。Lay a 95mm2 bare copper wire to C581 from A472. Meanwhile lay four bare copper wires to B551, A507, B553 and C521 for equipotential bonding. All cable lines will be laid underground along the planning path.
Overview
5) 控制电缆回路： Control cable circuit:
安装在HCL装置现场的3.6MW马达上的电流信号通过一根直埋敷设的铠装控制电缆直接接入10KV开关柜。The current signal installed on 3.6MW motor in the HCL devices site passes through a buried armored control cable direct access to 10KV switchgear.
由变压器出线柜去C581以外的变压器，采用两根分别为10*2.5mm2、4*2.5mm2屏蔽铠装控制电缆，由中压转接柜引出，与中压电缆同路径敷设至相关变压器室。其中，10*2.5mm2电缆直接接至温控箱，4*2.5mm2电缆可集中从某间变压器室引出，沿桥架至相关PCS楼ATS柜。Transformer outlet cabinets are connected to other transformers not in C581 by using two 10 * 2.5mm2, 4 * 2.5mm2 shield sheathed control cable respectively. The 10 * 2.5mm2 cable directly is connected to the temperature control box and 4 * 2.5mm2 cable are led out from transformer room, along the bridge to the relevant PCS floor ATS cabinet.
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