超高压孤立档相间间隔棒长度精确计算方法
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作者单位:

1.三峡大学电气与新能源学院;2.国网四川省电力公司天府新区供电公司

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通讯作者:

中图分类号:

TM726

基金项目:

大型悬浮电位导体对空气间隙操作冲击放电特性的影响机制及调控研究


An Accurate Calculation Method for the Length of Spacer Rods Between Phases of Ul-tra-High Pressure Isolated Gears
Author:
Affiliation:

1.College of Electrical Engineering and New Energy,China Three Gorges University;2.State Grid Sichuan Electric Power Company Tianfu New District Power Supply Company

Fund Project:

Research on Influence Mechanism and Regulation of Large-scale Suspended Potential Conductor on Impulse Discharge Characteristics of Air Gap Operation

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    摘要:

    在超高压孤立档输电线路的工程设计中,因耐张串和相间间隔棒集中荷载影响,使得相间间隔棒长度难以计算准确,进而导致施工安装困难、产生电晕损耗、磨损导线等诸多问题。为此,本文提出了考虑集中荷载影响的超高压孤立档相间间隔棒长度的精确计算方法,该方法充分考虑了集中荷载的重量、数量、安装位置等因素对相间间隔棒长度计算的影响,提高了计算准确性。首先介绍了考虑耐张串和相间间隔棒集中荷载影响的导线弧垂公式,其次分别提出了耐张塔塔头尺寸相同、不同和有转角度数时相间间隔棒长度的计算方法,最后通过工程算例和实测值验证了本文方法的准确性。结果表明:传统方法因未考虑相间间隔棒集中荷载的影响,导致计算结果误差较大,而本文方法克服了上述不足,比传统方法更为准确。研究结果可为相间间隔棒长度计算理论研究和工程设计提供参考。

    Abstract:

    In the engineering design of ultra-high voltage isolated transmission lines, due to the concentrated load of the tension string and the interphase spacers, it is difficult to calculate the length of the interphase spacers accurately, which leads to difficulties in construction and installation, corona loss, and abrasion of wires. For this reason, the accurate calculation method for calculating the length of interphase spacers in ultra-high pressure isolated gears considering the influence of concentrated loads is proposed. By fully considering the influence of the weight, quantity, installation position and other factors of the concentrated load on the calculation of the length of interphase spacers, the calculation accuracy is improved. Firstly, the conductor sag formula considering the influence of the concentrated load of the tension string and the interphase spacer rod are introduced. Secondly, the calculation method for the length of the interphase spacer rod when the tension tower head is the same, different and has the number of rotation angles is proposed. Finally, the accuracy of the method in this paper is verified via engineering examples and measured values. The results show that the traditional method ignoring the influence of the concentrated load of the interphase spacer bar leads to a large error. Comparatively, the method proposed in this paper is more accurate than the traditional method and overcomes the above short-comings. The research results can provide references for the theoretical research and engineering design of the length of the interphase spacer.

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方萌,文中,姜岚,等. 超高压孤立档相间间隔棒长度精确计算方法[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-10-10
  • 最后修改日期:2022-02-27
  • 录用日期:2022-03-03
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