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电网技术  2015 

分裂导线阻抗调节防冰及融冰方法

DOI: 10.13335/j.1000-3673.pst.2015.10.039, PP. 2941-2946

Keywords: 分裂导线,阻抗调节,防冰方法,融冰方法

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Abstract:

目前广泛应用的输电线路交、直流融冰方法已不能满足当前电网安全性、可靠性的要求以及智能电网的发展。使用分裂导线的阻抗调节来实现其自身的防冰或者融冰,具有实时性和不断电作业等优点,是一种非常有前景的输电线路覆冰防御方法。即对阻抗调节应用于输电线路防冰、融冰的具体方法进行了研究。根据分裂导线阻抗调节的功能和特点,首先对使用该方法进行线路防冰、融冰的基本原理和要求进行了论述,同时也引出了需要计算的关键参数对于防冰方法主要是解决最大间隔时间和最小负荷电流的计算问题,对于融冰方法主要是进行融冰时间的简化计算;然后在此基础之上,推导得出使用阻抗调节进行防冰、融冰的具体方法,包括子导线导通数目的选择及其导通时间的确定。在多功能人工气候室内进行了防冰和融冰的模拟试验,试验结果表明对防冰、融冰方法的计算是合理的。为分裂导线阻抗调节方法在防冰、融冰方面的应用提供了一种借鉴方案。

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