Power Quality Analysis: Load and harmonics monitoring of the electrical utility grid

传统上，电力线噪声和谐波在很大程度上被认为是配电中一个可管理的、低风险的问题，在住宅负荷中不存在。然而，包括使用点开关电源、插电式电动汽车(PEV)和消费类电器中的变速驱动器在内的噪音产生设备的电力环境正在成为常态。作为这些趋势的结果，电力行业在电力线噪声和谐波方面面临着一个全新的领域，必须用新的配电系统设备和资产管理战略来测量、建模和解决这些问题。

Power line noise and harmonics have traditionally largely been considered to be a manageable, low-risk issue in electrical power distribution and non-existent in residential loads. However the power landscape for noise-generating devices including point-of-use switching power supplies, Plug-In Electric Vehicles (PEV) and variable speed drives in consumer appliances are becoming the norm. As a result of these trends, the power industry faces a qualitatively new domain in regard to power-line noise and harmonics that must be measured, modeled and addressed with new distribution system equipment and asset management strategies.