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[1]朱文卫,许成昊,王兴华,等.高压交流输电线路与并行埋地管道安全距离计算模型[J].油气储运,2024,43(07):1-13.
ZHU Wenwei,XU Chenghao,WANG Xinghua,et al.Calculation model of the safety distance between high-voltage AC transmission lines and buried pipelines[J].Oil & Gas Storage and Transportation,2024,43(07):1-13.
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ZHU Wenwei,XU Chenghao,WANG Xinghua,et al.Calculation model of the safety distance between high-voltage AC transmission lines and buried pipelines[J].Oil & Gas Storage and Transportation,2024,43(07):1-13.
高压交流输电线路与并行埋地管道安全距离计算模型
《油气储运》[ISSN:1000-8241/CN:13-1093/TE]
卷:
43
期数:
2024年07期
页码:
1-13
栏目:
出版日期:
2024-07-25
- Title:
-
Calculation model of the safety distance between high-voltage AC transmission lines and buried pipelines
- Keywords:
- AC interference; safety limits; safe distance; zigzag pipes; equivalent model
- 文献标志码:
- A
- 摘要:
-
【目的】中国经济的蓬勃发展加快了公共能源走廊的形成，由于架空线路与油气管道在工程选址上的趋同性，两者交叉跨越、近距离并行或相互靠近的现象十分普遍，由电磁感应引起的的管道交流腐蚀问题日益严重，可能导致油气泄漏以及火灾爆炸事故，造成严重的经济损失以及人员伤亡。【方法】针对这一问题，选取常见的35 kV、110 kV、220 kV、500 kV等4个电压等级的输电线路为研究对象，利用CDEGS数值仿真软件建立起电磁干扰模型，采用单一变量法计算不同工况条件下的“管-线”交流干扰，以交流电流密度30 A/m2为判断指标，得到并行区域内高压交流输电线路与埋地管道之间的极限接近距离（安全距离）。【结果】随着“管-线”并行长度增加，安全距离逐渐增大，当并行长度超过20 000 m后，安全距离的变化幅度很小；随着土壤电阻率升高，35 kV输电线路与管道间的安全距离逐渐减小，110 kV及以上电压等级下的安全距离整体呈先增大后减小的规律；同一电压等级下，单回塔型电路的安全距离均小于双回塔型电路。【结论】针对实际工程中输电线与管道之间位置关系复杂的情况，本工作通过模型等效的方式进行“化曲为直”，根据管道在路径过程中出现转折点的数目不同提出了曲折管道与高压交流输电线等效间距计算方法，并通过与模拟数据相对比，证明了该模型的有效性。
- Abstract:
-
The vigorous development of China's economy has accelerated the formation of public energy corridors, due to the convergence of overhead lines and oil and gas pipelines in the project site, the phenomenon of crossing and crossing between the two, close parallel or close to each other is very common, and the problem of pipeline AC corrosion caused by electromagnetic induction is becoming more and more serious, resulting in oil and gas leakage and fire and explosion accidents, resulting in serious economic losses and casualties. In order to solve this problem, this paper selects the transmission lines under the four voltage levels of 35kV, 110kV, 220kV and 500kV, which are common in China, as the research object, uses CDEGS numerical simulation software to establish the electromagnetic interference model, uses the method of controlling a single variable to calculate the "pipeline" AC interference under different working conditions, and uses the AC current density of 30A/ m2 is used as the judgment index, and the ultimate approach distance (safety distance) between the high-voltage AC transmission line and the buried pipeline in the parallel area is calculated. The results show that with the increase of the parallel length of "pipeline", the safety distance gradually increases, and when the parallel length exceeds 20000m, the change range of the safety distance is very small; with the increase of soil resistivity, the safety distance between the 35kV transmission line and the pipeline gradually decreases, and the safety distance increases first and then decreases at the voltage level of 110kV and above; under the same voltage level, the safety distance of the single-return tower type is smaller than that of the double-return tower type. In view of the complex position relationship between the transmission line and the pipeline in the actual project, this paper is the first to "turn the curve into a straight" through the model equivalence method, and proposes a method to calculate the equivalent spacing between the zigzag pipeline and the high-voltage AC transmission line according to the number of turning points in the pipeline in the path process, and the effectiveness of the model is proved through the test.
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备注/Memo
基金项目：广东电网科技项目“交流输电线路对油气管道的影响及其规律、标准化防护方案及效果评价研究”，GDKJXM20220860)。
作者简介：朱文卫，男，1985年生，高级工程师，2008年硕士毕业于西安交通大学电气工程及其自动化专业，现主要从事输电线路专业方向的研究工作。地址：广东省广州市海珠区琶洲街道琶洲大道55号，510330。电话：15876531968。Email：735228815@qq.com
更新日期/Last Update:
2024-05-09