The paper considers two power quality issues: voltage distortion and voltage drop along the pole lines of different LED street (road) lighting installations. The research includes three parts: (1) development of a novel model and the corresponding software for calculating voltage harmonics in the three-phase LED street lighting installations, where the load is nonsymmetrical and nonlinear. The model is based on the application of symmetrical components and the impedance per phase model. (2) Experiments on two sections of a pilot street lighting installation, one with 6 poles with neutral white and the other with 5 poles with warm white LED luminaires (the former were with conventional, and the latter with improved drivers regarding harmonic emissions). Their results were used to define harmonic characteristics of the LED luminaires and validate the model. (3) The developed software was applied to four typical street (road) lighting installations, two with a single-sided and two with a central pole layout. The major outcome was the determination of the maximum permissible number of the LED luminaires which can be connected to the feeding cable without exceeding any of the limits related to voltage drop, total voltage harmonic distortion and individual voltage harmonics in either the full or reduced street lighting regimes.

本文考虑了两个电能质量问题：不同LED街道（道路）照明装置沿极线的电压失真和压降。研究包括三个部分：（1）开发一种新颖的模型和相应的软件，用于计算负载为非对称且非线性的三相LED路灯安装中的电压谐波。该模型基于对称分量的应用和每相阻抗模型。（2）在试验性街道照明装置的两个部分进行了实验，一个带有6极中性白光，另一个带有5极中暖白光LED照明器（前者是常规照明，后者具有改进的谐波发射驱动器）。他们的结果用于定义LED灯具的谐波特性并验证模型。（3）开发的软件应用于四个典型的街道（道路）照明设备，其中两个具有单面照明，而两个具有中央杆布置。主要结果是确定可以连接到馈电线的LED灯具的最大允许数量，而不会超过与满灯或低照度下的电压降，总电压谐波失真和单个电压谐波有关的任何限制政权。