摘要
由于当前电网负荷的电力电子化趋势越来越明显,导致其复杂性、随机性、时变性也显得尤为突出,从而影响了电力负荷模型的准确性。负荷建模过程中为了考虑到不同比例及不同类型电力电子设备的影响,需要进行合理的分类。针对不同类型的电力电子设备具有不同的端口机电特性与谐波特性,对典型负荷设备进行谐波特性分析,进行初步的分类,然后建立详细仿真模型用于获取大量的各种随机场景下的特征数据,分析其谐波特性,并通过模糊C均值聚类(Fuzzy cmeans,FCM)方法进行分类调整。通过谐波模拟数据集,验证本方法用于电力电子负荷构成成分分析及分类的合理性与有效性。
The trend of power electronics dominated power grid is now becoming more obvious,and the character of complexity,randomness and time-varying is becoming very prominent,which will affect the accuracy of load model.Therefore,considering the influence of high proportion of power electronic based equipment in load modeling,it is necessary to classify them reasonably.The electro-mechanical character and harmonic character are always various between different electronics based load.The harmonic characteristics of typical load equipment are analyzed,and the preliminary classification is carried out.Then a detailed simulation model is established to obtain a large number of characteristic data under various random scenes,analyze the harmonic characteristics,and adjust the classification by fuzzy c-means clustering(Fuzzy C-means,FCM).Through the harmonic simulation data,the rationality and effectiveness of this method for power electronic load component analysis and classification are verified.
作者
张琦兵
张佳彬
樊陈
金哲倩
史锐
徐春雷
ZHANG Qibing;ZHANG Jiabin;FAN Chen;JIN Zheqian;SHI Rui;XU Chunlei(State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210024,China;College of Energy and Electrical Energy,Hohai University,Nanjing 211100,China;.China Electric Power Research Institute,Nanjing 210003,China)
出处
《应用科技》
CAS
2021年第3期78-85,共8页
Applied Science and Technology
基金
国家自然科学基金重点项目(51837004).
关键词
电力负荷
负荷模型
电力电子负荷
谐波
负荷分类
成分分析
模糊C均值聚类
配电网负荷
power load
load model
power electronic load
harmonic
load classification
component analysis
fuzzy cmeans clustering
distribution load
