基于敏感负荷的电压暂升影响度评估方法

随着敏感负荷在电网中所占比重的增加，电力用户对电能质量的要求越来越高，电压暂升对敏感负荷的影响不容忽视。考虑电压暂升幅值和持续时间对敏感负荷的影响，基于信息技术工业协会(information technology industry council, ITIC)电压暂升耐受曲线特点以及逻辑斯蒂函数单调性和连续性，利用耐受曲线的关键点确定电压暂升幅值和持续时间影响度对应的控制变量，从而提出一种基于敏感负荷的电压暂升影响度评估方法。在算例中考虑继电保护配置方式以及电网结构与故障位置对电压暂升持续时间的影响，设置不同场景并采用所提方法对敏感负荷的电压暂升影响程度进行评估，验证了该方法的合理性和可行性，为敏感负荷的电压暂升评估和治理提供指导。

Evaluation Method of Voltage Swell Influence Degree Based on Sensitive Load

As the proportion of sensitive loads in the power grid increases, power users have higher and higher requirements for power quality, and the impact of voltage swells on sensitive loads cannot be ignored. Comprehensively considering the influence of voltage swell amplitude and duration on sensitive loads, based on the characteristics of ITIC voltage swell tolerance curve and the monotonicity and continuity of logistic function, the key points of the tolerance curve are used to determine the control variables of the influence degree of voltage swell amplitude and duration, and a method is proposed for evaluating the influence of voltage swell based on sensitive loads. Finally, considering the influence of relay protection configuration and grid structure and fault location on voltage swell duration, different scenarios are set up in the example and the method proposed in this paper is used to evaluate the influence degree of the voltage swell of the sensitive load, which verifies the rationality and feasibility of the method, and provides guidance for the evaluation and management of the voltage swell of the sensitive load.