城市轨道交通供电系统电能质量限值计算方法

近年来，由于城市轨道交通具有运量大、速度快、安全、准点、保护环境、节约能源和用地等特点，在国内大中型城市迅速发展，但是城市轨道交通用电属性决定了其为典型的非线性“污染源”负荷。为了保证含城市轨道交通的供配电系统安全稳定运行，需要明确含城市轨道交通电网电能质量限值的计算方法，以利于对其进行电能质量测试与评估。基于这一背景，研究了城市轨道交通接入电网电能质量限值的计算方法，提出了含城市轨道交通负荷的供配电系统电能质量限值计算方法，并对某实际城市轨道交通供配电系统进行了电能质量限值计算，为科学评估含城市轨道交通供配电系统的电能质量提供了评估依据。

Calculation Method of Power Quality Limits of Urban Rail Transit Power Supply System

In recent years, due to the characteristics of huge capacity, fast speed, safety, on schedule, environmental protection, energy and land saving, and so on, urban rail transit has been rapidly developed in the large and medium-sized cities in China. But the electricity attribute of urban rail transit determines that it is a typical nonlinear ＂pollution＂ load. In order to ensure the safe and stable operation of the power supply and distribution system containing urban rail transit, the calculation method of power quality limits of urban rail transit should be put forward for the test and evaluation of power quality. Therefore, this paper studied the calculation method of power quality limits of urban rail transit accessed to power grid, and proposed the calculation method of power quality limits for the power supply and distribution system containing urban rail transit, and used the calculation method for an actual the power supply and distribution system containing urban rail transit. The research results can provide a basis for the scientific evaluation of power quality of power supply and distribution system containing urban rail transit.