采用数值模拟技术研究了缓解锌带长度、半径、相对位置以及铺设方式对交流干扰缓解效果的影响。计算结果表明，随着缓解锌带长度增加管道整体的交流电压下降，而且其缓解效率不随电力线负载电流的变化而变化；缓解效果随锌带半径的增加先提高后降低，半径为0．006m时缓解效果最好；当缓解锌带位于电力线和管道中心连线上时缓解效果最优。通过计算得到了水平锌带与深井接地极和接地网缓解效果近似时的等效关系。
The effects of length, radius, position and laying method of mitigation wires on AC interference voltages were studied by software simulation. The results show that AC voltages along the pipeline decreased with the increase of length and the mitigation efficiency was independent of load current of power line. AC voltages decreased first and then increased with the increase of radius. AC voltages reached the minimum as the radius was 0. 006 m. AC voltages reached the minimum as the mitigation wire located between pipeline and power line. Efficiency of parallel Zn was better than that of net grounding and deep well grounding.
参考文献
| [1] | Southey R.D.;Dawalibi F.P. .Recent advances in the mitigation of AC voltages occurring in pipelines located close to electric transmission lines[J].IEEE Transactions on Power Delivery,1994(2):1090-1097. |
| [2] | 谢辉春,宋晓兵.交流输电线路对埋地金属管道稳态干扰的影响规律[J].电网与清洁能源,2010(05):22-26. |
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