换流站交流软母线安装长度模型分析  

Analysis on Installation Length Model for AC Flexible Bus of Convertor Stations

作　　者：刘超军 陈露 崔秋菊 LIU Chaojun;CHEN Lu;CUI Qiuju(Hubei Power Transmission and Transformation Engineering Co.,Ltd.,Wuhan Hubei 430000,China;State Grid Hubei Electric Power Co.,Ltd.,Wuhan Hubei 430077,China)

机构地区：[1]国网湖北送变电工程有限公司,湖北武汉430000 [2]国网湖北省电力有限公司,湖北武汉430077

出　　处：《湖北电力》2023年第1期46-51,共6页Hubei Electric Power

摘　　要：对于中大型换流站运行系统,软母线是汇集、分配和传输电能的重要载体,由于室外空间大、气象及地质条件复杂,所以大部分采用软母线连接方式,其中软母线弧垂是检测其安装质量的重要标准,过小则会增加导线拉力,过大则会影响安全距离,同时绝缘子串重量、数量及构架高低差、档距均会对软母线弧垂产生较大的影响,简单的悬链线模型无法准确计算弧垂及对应导线的安装长度[1]。介绍了软母线弧垂的基本计算方法,并在此基础上提出复合模型,更精确计算软母线下料长度,提高软母线安装质量,保证供电质量,并将其运用于工程实际中。In the operation system of medium and large convertor stations,flexible bus is an important carrier for collection,distribution and transmission of electric energy.Due to large outdoor space,complex meteorological and geological conditions,the flexible bus connection mode is mostly used.In this mode,the flexible bus sag is an important standard to detect the installation quality.Too small sag will increase the wire tension and too large sag will affect the safety distance.At the same time,the weight and quantity of insulator string,the height difference of the frame and the span length all will have a great influence on the sag of the flexible bus,and the simple catenary model cannot be used to accurately calculate the sag and the blanking length of the corresponding wire.This paper introduces the basic calculation method for flexible bus sag,and on this basis proposes a composite model to accurately calculate the length of flexible bus blanking,to improve the flexible bus installation quality and ensure the reliability of power supply system.The proposed model is verified in engineering practice.

关 键 词：换流站 软母线 弧垂 档距 绝缘子 

分 类 号：TM751[电气工程—电力系统及自动化]