摘要
新能源并网装置控制参数的整定,是保证电力系统稳定运行的必要条件。针对光伏采用新能源同步机(MGP)的并网方式,建立了实验系统模型并提出了用于参数整定的通用方法。首先通过分析MGP传输功率与光伏直流电压的约束关系,对MGP的功角动态进行简化,建立了光伏-MGP系统简化的传递函数;然后基于频域内的根轨迹分析,得到控制参数的稳定范围,并通过幅频特性与时域响应,对控制参数进一步优化;最后在PSCAD/EMTDC中搭建光伏采用MGP并网的电磁暂态模型,通过设置不同的控制参数仿真验证了所提方法的有效性,并在5 kW实验平台上得到验证。
In the light of photovoltaic grid-connected mode using motor-generator pair(MGP),the paper establishes an experimental system model and proposes a general method of parameter tuning.Firstly by analyzing the constraint relationship between MGP active power transmission and the photovoltaic DC voltage,the power angle dynamics of MGP are simplified,and the simplified transfer function of photovoltaic-MGP system is established.Then based on the root locus analysis in the frequency domain,the stability range of the control parameters is obtained,and the control parameters are further optimized by analyzing the amplitude frequency characteristics and time domain response.Finally,the electromagnetic transient model for photovoltaic grid connection using MGP is built in PSCAD/EMTDC and a 5 kW experimental platform is built in the laboratory,verifying the effectiveness of the parameter tuning method by setting different control parameters.
作者
王岳
李晨阳
黄永章
张馨月
王童
赵海森
WANG Yue;LI Chenyang;HUANG Yongzhang;ZHANG Xinyue;WANG Tong;ZHAO Haisen(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Beijing 102206,China;State Grid Nanjing Power Supply Company,Nanjing 210000,China)
出处
《智慧电力》
北大核心
2023年第10期15-22,110,共9页
Smart Power
基金
国家自然科学基金资助项目(52177041)
新能源电力系统国家重点实验室自主研究课题(LAPS202202)。
