交联聚乙稀电缆基础教程目录

Chapter one Development history of XLPE insulated cable

Chapter two Structure and material property of XLPE insulated cable

2. 1 Structure of XLPE insulated cable

2.2 Conductor material

2.3 Insulation material

2.4 Internal and external semiconductor screen layer of XLPE insulated cable

2.5 Metallic screen

Chapter three Calculated electric parameter of XLPE insulated cable with mathematical statistics theory

3.1 Theoretical basis

3.2 Confirm breakdown distribution of cable

3. 3 Analyses related to insulation thickness and breakdown electricfield

3.4 Design of 220kV XLPE cable construction

3.5 Analyses of tests

3.6 Estimate cable reliability in operation

3.7 Confirm operated cable reliability used in method o calculated expectation life

Chapter four Electrical parameter of XLPE insulated cable

4.1 Electrical field distribution of XLPE insulated cable

4.2 Conductor resistance of XLPE insulated cable

4.3 Inductance of XLPE insulated cable

4.4 Capacitance of XLPE insulated cable

4.5 Induced voltage of metallic screen layer （or metallic sheath） of XLPE insulated cable

4.6 Metallic sheath overvoltage of XLPE insulated cable

Chapter five Electric parameter of accessories on XLPE insulated cable

5.1 Electrical field distribution of accessories on XLPE insulated cable

5.2 Calculation and structure of stress control

5.3 Boundary property of accessories on XLPE insulated cable

5.4 Electrical calculation of terminal

5.5 Electrical calculation of joint

5.6 Shrinkage of XLPE insulated cable

……

Chapter six Confirm design parameter of XLPE insulated cable line

Chapter seven Confirm design parameter of accessories in XLPE insulated cable line

Chapter eight XLPE insulated cable installation and laying

Chapter nine XLPE insulated cable accessories installation

Chapter ten Connection and earthing of metallic sheath of XLPE insulated cable

Chapter eleven Hand-over test and prevention test of XLPE insulated cable

Chapter twelve Online monitoring of XLPE insulated cable

Chapter thirteen Detection of cable fault

Chapter fourteen Operation, maintenance, technology management and security controls of XLPE power cable

References

Author introduction

From using point of view, this book go into particulars all;erformance of the material and construction on XLPE insulated power cablefrom theoretical and performance calculation, and tell about the option,installation, operation, maintain, test on site, hand-over and prevention test, teststandard and standard demand over this base. This book also introduce the somemanagerial experiences used to XLPE insulated power cable on the Electric Power Supply Bureau, and analyse the development tendency of XLPE insulated cable.

The book is a studied and worked handbook of engineer necessity used onthe XLPE insulation cable, a reference book of engineer at the Electric PowerSupply Bureau in China.

常用绝缘电缆性能对比：

在电缆生产中，最常用的绝缘塑料有聚乙烯和聚氯乙烯，其中聚乙烯材料具有更好的电气性能及较好的交联性，因此而发展了多种工业交联生产工艺，化学交联和辐照交联。除下表性能以外，在生产和敷设过程中，所常用的交联电缆的绝缘层都表现为硬度和强度较大（常温下），特别是比聚氯乙烯绝缘剥离难度增大。由于辐交联电缆的交联性能最好、交联度最高，相对而言剥离强度也最大。如果交联电缆绝缘层的剥离比较容易（类似于聚氯乙烯），那必然是交联度不够或没有交联。通常情况下，温水交联工艺生产的交联电缆，出现交联度不够的情况较多，原因是该类产品本来交联度就相对较低，而且交联工艺非连续、不能自动控制，受人为因素影响很大，容易发生欠交联。

采用经过改性的聚乙烯绝缘料通过1 2的挤出方式完成异体屏蔽层――绝缘层――绝缘屏蔽层的挤出后，将冷却后的绝缘线芯，均匀通过高能电子加速器的辐照扫描窗口完成交联过程。辐照交联电缆料中不加入交联剂，在交联时是由高能电子加速器产生的高能电子束有效穿透绝缘层，通过能量转换产生交联反应的，因为电子带有很高的能量，而且均匀地穿过绝缘层，所以形成的交联键结合能量高，稳定性好。表现出的物理性能为，耐热性能优于化学交联电缆。但由于受加速器能量级的限制（一般不超过3.0Mev电子束有效穿透厚度为10mm以下，考虑几何因数，生产电缆的电压等级仅能达到10KV，优势在6KV以下 。

交联电缆通常是指电缆的绝缘层采用交联材料。最常用的材料为交联聚乙烯（XLPE） 。

过程是将线性分子结构的聚乙烯（PE）材料通过特定的加工方式，使其形成立体型网状分线结构的交联聚乙烯。使得长期允许工作温度由70℃提高到90℃（或更高），短路允许温度由140℃提高到250℃（或更高），在保持其原有优良电气性能的前提下，大大地提高了实际使用性能。