Based on the quantitative analysis,the calculation formulas of additional loss of wire caused by unbal-anced operation are derived,and the close relationship of the additional loss of wire with the phase sequence of connection are pointed out;A simple method to reduce the additional loss of wire is presented;It is proved that the method is available and effective by practical examples.
在三相四线制供电线路中,三相不平衡运行是不可避免的;通过对三相不平衡运行附加线损进行的定量分析,推导出了其理论计算公式,指明了此附加线损与连接相序有关,提出了简单易行的降低附加线损的方法,并通过实例验证了这种方法的效果是明显的。
In this paper,two properties of Pascal lines are discussed.
论证了巴斯加（Ｐａｓｃａｌ）线的两条性质：在巴斯加定理中的６０ 条巴斯加线，每４条交于一点——对边交点；属于同一对边交点的４ 条巴斯加线，分属两个成射影对应关系的同底一维线束。
author introduces the basic theory of HOUGH transform firstly,and then defines "prime line" and "additional line",offers the "intersection principle" to eliminate "additional line" out of parameter space,at last explains how to avoid "competition predominance of declining line" in applications.
介绍了应用HOUGH变换的基本原理,定义了"基本线"和"附加线"的概念,提出把"附加线"从参数空间剔除的"交点准则",补充了应用过程中对"斜线竞争优势"的消除方法。