碳纤维复合芯导线及金具压接施工技术研究

碳纤维复合芯导线（简称ACCC）是目前全世界电力输变电系统理想的取代传统的钢芯铝铰导线、铝包钢导线、铝合金导线及进口殷刚导线（简称ACSR）的新产品,碳纤维复合芯导线与传统导线相比具有重量轻、强度大、低线损、弛度小、耐高温、耐腐蚀、与环境亲和等优点,是实现电力传输节能、环保与安全的理想替代品。文章介绍了碳纤维复合芯导线的性能特点和施工方法,为今后实施类似工程提供参考。     

碳纤维复合导线在上海电网应用前景初探

认为碳纤维复合导线是一种全新概念的架空输电线路用导钱,与现有的各种架空导线相比,具有重量轻、强度大、耐高温、耐腐蚀、线损低、弛度低等优点.通过对碳纤维复合导线的机械性能、电气性能研究,与其他耐热导线的比较分析并结合上海电网实际情况进行了应用方案探讨,结论可供输电线路工程应用参考.     

碳纤维复合芯导线过滑轮试验研究

随着电力需求的迅速增长,城市供电矛盾日益突出,碳纤维复合芯导线以其优异的技术性能在电网升级改造中得到越来越多应用.随着碳纤维复合芯导线在电力系统的推广应用,针对其性能、施工技术等的研究显得尤为重要,本文介绍了可以模拟导线张力放线施工工况的过滑轮试验系统.并给出了利用此试验系统对碳纤维复合芯导线进行的过滑轮试验研究结果,...     

碳纤维复合芯导线在架空线路上的应用

碳纤维复合芯导线(ACCC)是一种全新概念的架空线路用导线,具有重量轻、强度高、热稳定性好、弛度小、载流量大和耐腐蚀的特点。通过对其与普通钢芯铝绞线(ACSR)的性能比较,及其在南通电网上首次应用的介绍,研究了ACCC的施工、运行情况,以及在应用中存在的问题。     

Self-damping measurements of conductors with circular andtrapezoidal wires

Self-damping characteristics of three types of conductors with seven different sizes were studied. Conductor types considered were ACSR round and trapezoidal (TW) wires as well as self-damping (SD). The power method was used in the measurement of self-damping of all three types of conductors. For each conductor, damping measurements were made at three tension levels (10, 25 and 40% of rated tensile strength of conductor) for frequencies ranging from 5 to 55 Hz and normalized peak-to-peak amplitudes varying between 25/f to 150/f where f is frequency in Hz. Empirical relationships were derived to estimate the power dissipation values for all other frequency and amplitude levels. Results obtained from tests conducted on ACSR round and trapezoidal wire conductors of similar diameter indicated that the ACSR TW conductor in general has higher internal damping when compared to ACSR round wire conductor. However this trend was not necessarily observed at low frequencies. It was also noted that power dissipation increases with increase in size of the conductor     

带张力更换导线的施工方法应用探讨

以一条220 kV线路增容改造施工为例,介绍了一种将多个耐张段的普通钢锌铝绞线在耐张塔上用特定长度的钢丝绳套连接成一个大耐张段,利用张力机带张力回牵旧导线,再牵引耐热铝合金导线进行换线的施工方法,有效解决了现场施工场地狭小、线路下方交跨复杂、经济作物多、政策处理难等施工难点,取得了良好的经济效益和社会效益,可为同类导地线更换改造施工提供参考。     

碳纤维复合芯导线的施工工艺

碳纤维复合芯导线是一种节能型增容导线,具有节能降耗、重量轻等优点。碳纤维复合芯导线由于其自身结构特点,在施工过程中容易出现导线碳纤维复合芯棒内缩、导线铝股松弛、外层铝股损伤等现象。在220 kV 洛燕线路和洛振线路由常规钢芯铝绞线更换为碳纤维复合芯导线改造工程中,研制了专用卡线器,并采取了科学、合理的碳纤维复合芯导线的施工工艺,避免了上述不良现象发生,保证了工程质量及施工安全。     

Planning and Operational Issues Arising From the Widespread Use of HTLS Conductors

High-temperature low-sag (HTLS) conductors, which can double the ampacity of conventional conductors, are becoming a mature option to uprate thermally limited transmission lines. This paper addresses several issues related to the widespread use of HTLS conductors in existing power systems. The first part of the paper analyzes the influence of higher line resistances on power transfer capability as well as the accuracy of conventional network models, based on constant conductor temperatures. The second part deals with the problem planners are facing when considering existing network reinforcement options versus the new alternative offered by HTLS conductors, intended to replace Alloy Aluminum Conductor Steel Reinforced (ACSR) equipment in situ. This leads to a security-constrained optimization problem involving binary decision variables. The 57-bus system is used throughout the paper to illustrate the main ideas.     

碳纤维复合芯（ACCC）导线在输电线路中的应用

随着电力需求的迅速增加,提高输电线路的输送容量、减少对环境的影响是电力企业不断努力的方向。通过在高压线路中应用碳纤维复合芯（ACCC）导线技术进行了初步探讨。     

铝合金芯铝绞阻水架空绝缘导线的应用

在进行架空配电线路绝缘化改造时,要根据改造工程现场的环境条件,合理选择绝缘导线的型号。对铝芯交联架空绝缘(JKLYJ)型导线与铝合金芯铝绞阻水架空绝缘(ZS-JKL/LHYJ)型导线进行比较,阐述了金山供电公司在10kV裸导线绝缘化改造项目中选用ZS-JKL/LHYJ型导线的理由、应用情况及施工要点,并对其技术经济性进行了简要评价。     

架空输电线路节能导线应用技术经济分析

介绍了铝合金芯铝绞线、钢芯高导电率硬铝绞线、中强度铝合金绞线3类节能型导线材料特点,结合节能导线试点工程,对节能导线与常规钢芯铝绞线进行了导线技术特性、经济性、施工等方面的综合分析比较,提出了3类新型节能导线在输电线路工程中的适用范围。研究表明,3类新型节能导线完全可以替换钢芯铝绞线在输电线路中应用,且具有良好的节能效果。     

JRLX/T型碳纤维复合芯导线的特性及工程应用

碳纤维复合芯导线因材料和结构与一般钢芯铝绞线不同,其应力、弧垂特性、输送容量、电能损耗等具有明显的优越性。从不同设计条件下的10 000多个导线应力弧垂计算数据中摘录了一些有代表性的数据,分析了该导线在输电线路新建、增容改造工程中的应用,阐明了该导线的实用性和经济性。     

全寿命理论在宁海电厂-苍岩线路导线选型中的应用

导线选型是输电线路设计中一个重要内容,本文对宁海电厂-苍岩500kV输电线路的导线选型进行了比较分析,并应用全寿命设计理论建立了一个简化的导线经济比较模型。通过对普通钢芯铝绞线和铝包钢芯铝绞线路全寿命成本比较,得出了铝包钢芯铝绞线的全寿命周期费用及节能效益均具有明显优势的结论。     

输电线路新型节能导线的推广应用

结合国家电网公司基建新技术的推广应用,介绍了高导电率钢芯铝绞线、铝合金芯铝绞线和中强度全铝合金绞线的节能原理和性能,对比分析了3种新型节能导线在电气、机械特性等方面的技术差异,并对影响线路造价的敏感因素进行了分析,采用年费用和投资回收期法对导线的经济性进行了评价,最后提出了3种新型节能导线的工程应用范围,为节能导线的推广应用提供了参考。     

Investigation of mechanical properties of single layer ACSR based on an Integrated Model

The design, selection and improvement for overhead aluminum conductor steel reinforced (ACSR) require intensive understanding of the cable characteristics. Until now, the analytical model for single layer ACSR is not satisfactory because of an unacceptable error between the analytical value and the experimental value. This paper presents a newly developed Integrated Model designed and performed on single layer conductors to investigate their electromagnetic, thermal and mechanical properties based on the Unified Model which was initially designed for three-layer ACSR. Carefully designed physical experiments to obtain conductor electromagnetic properties were used to validate the Integrated Model for various composite single layer ACSR: Guinea, Penguin, and Raven, popularly used in North America. An analysis of the electrical losses is also reported, and mechanical properties of odd-layer ACSR conductors are studied through case examples.     

碳纤维复合材料芯导线在国内推广应用的技术经济分析

根据国内近年来碳纤维复合材料芯导线的应用情况,提出了碳纤维复合芯导线的推荐线型;通过对220kV改造线路和500kV新建线路模型的计算分析,得出在改造线路和新建线路工程中,应用碳纤维复合芯软铝导线与常规钢芯铝绞线的技术经济比较结果,并进一步对碳纤维复合芯软铝导线价格构成及未来推广应用条件进行了分析。     

碳纤维复合芯铝绞线导线的应用和金具的研制

介绍了碳纤维复合芯铝铰线(ACCC)的高强度、高容量、耐高温、耐腐蚀、线损低、低弧垂等技术特性和应用情况,提出金具国产化研制的设想,可供采用ACCC碳纤维复合芯铝绞线的研究、设计、施工参考。     

Aged ACSR conductors. I. Testing procedures for conductors and lineitems

Field and laboratory tests of ACSR conductors and related line items from many of Ontario Hydro's older transmission lines are described. A nondestructive corrosion detector was modified for live line measurement of the loss of galvanizing from the steel cores of the ACSR conductors. Samples of conductors tested in the field have also undergone laboratory metallurgical investigation, and tests of fatigue, tensile strength, torsional ductility, and electrical performance. Extensive environmental studies identified corrosion products of ACSR conductors, the atmospheric factors responsible for corrosion, and the mechanisms by which corrosion takes place. It is concluded that the corrosion detector serves as a useful indicator of impeding end of conductor life, while the torsional ductility tests serve as a more precise condition indicator and can provide a guide for scheduling conductor replacement     

特高压直流输电线路大截面钢芯铝绞线选型研究

导线选型在特高压直流输电工程中占有重要地位,导线选型既要满足输电线路的电气性能、机械性能的要求,又要具有一定的经济性。采用全寿命周期的经济性计算方法,对1 000 mm2和1 250 mm2不同截面及分裂数的导线在±800kV和±1 100kV直流输电线路中应用的技术经济性进行了比较和分析。分析结果表明,损耗小时数、上网电价对导线选型具有直接影响,导线选型应综合考虑各影响因素,确定合理的导线方案。     

500kV同塔四回路西江大跨越导线选型研究

导线选择是大跨越设计一个重要环节。从电气性能、机械性能和综合投资等几个方面对5种适合大跨越使用的导线进行技术经济比较,优选出一种特强钢芯耐热铝合金绞线2×KTACSR/EST-1000导线,作为500kV狮子洋至五邑线路同塔四回路西江大跨越导线。