The problem of steady‐state stability (SSS) of the electrical power transmission system is presented through the lens of the porosity (POR) of power‐system high‐voltage transmission lines. Employing a simple procedure, it is possible to trace the effect of electrical power flows on power system transmission line porosity and determine the steady‐state stability limit. In order to measure the proximity to the collapse point of SSS with greater clarity, the indicator of porosity POR of a transmission line is defined as the SSS collapse indicator. Using the proposed indicator, the planners and operators of transmission lines can continually calculate the effect of current power flows and transmission topology on the ability of transmission lines to receive more electric power without endangering the SSS and desired power‐flow profiles throughout a given system. When PORs of all transmission lines fall to one, the power system experiences the SSS collapse. Several benefits accrue from monitoring the POR of each transmission line, as full transmission capacity can be utilized, despite failures on some lines that had saturation and POR = 1 attainment. The SSS of a system is monitored through its components: transmission lines and their apparent power, allowing monitoring of the degree of stability of the system on the one hand and the causes of this condition on the other. Therefore, the results of the presented approach illustrate a more realistic and clearer picture of the stability of the power system compared to earlier approaches to investigate this extremely important aspect of system stability.

中文翻译：

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高压输电线路的孔隙率是电力传输稳态稳定性的指标

电力传输系统的稳态稳定性（SSS）问题是通过电力系统高压传输线的孔隙率（POR）的镜头提出的。使用简单的过程，就可以追踪电力流对电力系统传输线孔隙率的影响，并确定稳态稳定性极限。为了更清楚地测量SSS塌陷点的接近度，孔隙率POR指标传输线的“ sss”定义为SSS崩溃指示器。使用所提出的指标，输电线路的计划者和运营商可以连续计算当前潮流和输电拓扑对输电线路接收更多电力的能力的影响，而不会危害整个给定系统的SSS和所需的潮流曲线。当所有传输线的POR下降到1时，电力系统就会发生SSS崩溃。监视每条传输线的POR有几项好处，因为尽管某些线路出现了饱和和POR故障，但仍可以利用全部传输容量，因此可以利用全部传输容量= 1成就。系统的SSS通过其组件进行监视：传输线及其视在功率，一方面可以监视系统的稳定性，另一方面可以监视此状况的原因。因此，与研究系统稳定性这一极为重要的方面的早期方法相比，本文提出的方法的结果说明了电力系统稳定性的更真实，更清晰的描述。