中国电机工程学报2025，Vol.45Issue(20)：7841-7855,中插1,16.DOI:10.13334/j.0258-8013.pcsee.241212
电力系统电磁暂态仿真中随机噪声注入方法及其对系统随机响应统计特征的影响分析
Random Noise Injection Methods in Electromagnetic Transient Simulation of Power Systems and Their Impact on the Statistical Characteristics of System's Stochastic Response
摘要
Abstract
The uncertain output such as wind and solar and the random fluctuation of load can be regarded as the external random disturbance of"Double High"power systems.Such disturbance can be modeled as random noise injected into deterministic power systems.The modeling and simulation of random noise is the key to simulate the stochastic dynamic system and ensure the simulation results conform to the actual system statistical characteristics.To simulate the influence of random disturbance on power systems in mature electromagnetic transient simulation softwares,a random noise modeling and calculation method is proposed in this paper.This method does not change the basic computing architecture of the existing electromagnetic transient simulation program(EMTP)based on node analysis,and can ensure the statistical characteristics of the system's stochastic response are consistent under different simulation steps.Firstly,this paper theoretically explains the mechanism by which the statistical characteristics of the system's stochastic response to Gaussian white noise vary with the simulation step size in EMTP.It is proved that the statistical characteristics of the system's stochastic response to the colored noise with specific correlations do not vary with the simulation step size.Then,this paper proposes modeling standards for colored noise in EMTP and an analytical calculation method of theoretical value of the statistical characteristics.Two common methods for constructing colored noise are provided.Finally,based on CloudPSS simulation platform,the proposed random noise modeling and calculation method are verified.The statistical characteristics of system's stochastic response under different simulation steps and different noise modeling methods are also compared and analyzed.关键词
电磁暂态仿真/随机响应/谱分析/有色噪声Key words
electromagnetic transient simulation program(EMTP)/stochastic response/spectral analysis/colored noise分类
信息技术与安全科学引用本文复制引用
周博英,唐可翾,沈沉..电力系统电磁暂态仿真中随机噪声注入方法及其对系统随机响应统计特征的影响分析[J].中国电机工程学报,2025,45(20):7841-7855,中插1,16.基金项目
国家自然科学基金项目(U23B6008).Project Supported by National Natural Science Foundation of China(U23B6008). （U23B6008）
