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首页> 外文期刊>Electric power systems research >Transient analysis of compact distribution lines with dielectric-coated phase cables
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Transient analysis of compact distribution lines with dielectric-coated phase cables

机译：带有绝缘涂层的相电缆的紧凑型配电线路的瞬态分析

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This paper studies wave propagation characteristics and the transient response of single-phase and three-phase compact distribution lines. Although compact line configurations present bare and dielectric-coated cables in relative proximity, it is shown that their external per-unit-length parameters can be calculated using simplified expressions valid for widely-spaced cables. An attempt is made to identify whether the insulating layer surrounding the phase cables must be included for an accurate simulation of switching and lightning transients on compact distribution lines. The results show that the dielectric coating reduces the propagation velocity of certain modes to values slightly below the speed of light. However, this reduction does not have a significant influence on the initial peak values of the calculated switching and lightning overvoltages. Only the wave tails of the resulting voltage waveforms are more strongly modified depending on the terminal conditions of the line.
机译：本文研究了单相和三相紧凑型配电线路的波传播特性和瞬态响应。尽管紧凑的线路配置相对裸露的电缆和电介质涂覆的电缆而言，但显示出可以使用对宽间距电缆有效的简化表达式来计算其外部单位长度参数。试图确定是否必须包括围绕相电缆的绝缘层，以便精确模拟紧凑配电线路上的开关和雷电瞬变。结果表明，介电涂层将某些模式的传播速度降低到略低于光速的值。但是，这种降低不会对计算出的开关和雷电过电压的初始峰值产生重大影响。取决于线路的端子条件，仅对所得电压波形的波尾进行更强的修改。

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