A new iterative method for fault currents calculation which models arc resistance at the fault location
A new iterative method for fault currents calculation which models arc resistance at the fault location
复制标题
一种新的故障电流迭代计算方法，可模拟故障位置的电弧电阻
DOI：
10.1007/s00202-005-0328-9
复制
发表时间：
2006
影响因子：
1.8
通讯作者：
Hassan NOURI
中科院分区：
文献类型：
--
作者：
V. Terzija;R. Ciric;Hassan NOURI
为了准确地计算配电网故障电流，故障模型中还必须包括故障点处存在的电弧，电弧在故障电流计算中起着重要作用。在现有的方法中，在故障位置处的电弧电阻的值必须预先已知。由于故障电流取决于电弧电阻，而电弧电阻本身是故障电流的非线性函数，因此这里的基本问题是如何同时准确地计算故障位置处的电弧电阻和故障电流。在本文中，一个新的解决方案，上述定义的问题，通过使用迭代过程给出并彻底测试。提出了一种基于迭代混合补偿短路法的中压配电网短路电流计算新方法和一种新的电弧电阻计算公式。新方法同时计算短路电流和电弧电阻。给出了IEEE-34配电网中有/无分布式发电机的故障分析和电弧电阻计算结果，并进行了讨论。
In order to calculate fault currents in distribution systems accurately, the fault model must also include the electrical arc existing at the fault point and playing an important role in the fault currents calculation. In the existing approaches the value of the arc resistance at the fault location must be known in advance. Since fault current depends on the arc resistance, which is itself a non-linear function of the fault current, the fundamental question here is how to calculate the arc resistance and the fault current at the fault location simultaneously and accurately. In this paper, a new solution for the above-defined problem by using an iterative procedure is given and thoroughly tested. A new method for calculating short circuit currents in medium voltage distribution networks based on the iterative hybrid compensation short circuit method and a new formula for arc resistance are presented. The new method calculates short circuit currents and arc resistance simultaneously. Results of fault analysis and arc resistance calculation in the IEEE-34 distribution network with/without distributed generator are presented and discussed.