10kV XLPE电缆冷缩中间接头界面压力计算分析

发布时间：2018-11-15 22:16

【摘要】：近年来,冷缩中间接头广泛用于10 kV交联聚乙烯电缆线路中。界面压力是冷缩中间接头的重要性能参数,然而国际、国内标准缺少对界面压力测量方法的指导以及对界面压力数值范围的限定,一定程度上影响了冷缩中间接头的质量控制与性能检测。因此建立了界面结构的理论计算模型,推导了界面压力的理论计算公式,并以不同厂家不同尺寸的冷缩管为试品,使用预埋传感器的方式直接测得了实际的界面压力。试验结果表明:界面压力在接头安装后呈增大趋势并在数小时后趋于稳定值,试验数据与理论计算值的相对误差较小,验证了理论计算模型的合理性以及理论计算公式的有效性。研究结果能够为配网电缆中间接头的入网质量检测提供参考,从而提高配网电缆线路的可靠性。
[Abstract]:In recent years, cold-shrink intermediate joints are widely used in 10 kV cross-linked polyethylene cable lines. Interfacial pressure is an important performance parameter of cold shrink intermediate joints. However, the international and domestic standards lack the guidance to measure the interfacial pressure and limit the numerical range of interfacial pressure. To some extent, it affects the quality control and performance test of cold shrink intermediate joint. Therefore, the theoretical calculation model of interface structure is established, and the theoretical calculation formula of interface pressure is derived, and the actual interface pressure is measured directly by using preset sensors with different sizes of cold shrink tubes from different manufacturers. The test results show that the interfacial pressure tends to increase after the joint is installed and tends to be stable after a few hours, and the relative error between the test data and the theoretical calculation value is small. The rationality of the theoretical calculation model and the validity of the theoretical formula are verified. The results can provide a reference for the quality detection of the interconnect of distribution network cable and improve the reliability of the cable line of distribution network.
【作者单位】：清华大学电机工程与应用电子技术系;清华大学深圳研究生院;广州供电局有限公司;
【基金】：南方电网公司重点项目(K-GZM2014-030)~~
【分类号】：TM75

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