摘要
为增强系统惯量和阻尼,虚拟同步控制被广泛应用于港口岸电电源中,但虚拟同步控制的港口岸电电源与船舶PWM整流器负荷之间可能存在交互失稳问题.因此,本文首先根据其多时间尺度控制特性,提出了虚拟同步控制的港口岸电电源的分频段dq阻抗模型.其次,基于所建dq阻抗和广义奈奎斯特稳定判据的稳定性分析表明,港口岸电电源的交流电压环与船舶PWM整流器负荷的直流电压环之间存在控制交互作用,进而会诱发系统振荡.增加港口岸电电源的交流电压比例和谐振系数,或减小船舶PWM整流器负荷的直流侧电压比例系数可增强港口岸电供电系统的稳定性.最后基于硬件在环实验平台,验证了阻抗模型和稳定性分析结果的有效性.
Virtual synchronous control is widely studied in port shore power sources to enhance system inertia and damping,but there may be control interaction between the port shore power source and the ship PWM rectifier load.Thus,firstly,according to the multi-time scale control characteristics,a frequency-division dq-frame impe dance model of the port shore power source with virtual synchronous control is proposed.Secondly,the stability analy⁃ses based on the established dq-frame impedance and generalized Nyquist stability criterion show that there is a con⁃trol interaction between the AC voltage loop of port shore power source and the DC voltage loop of ship PWM rectifier load,inducing the system oscillation.Increasing the AC voltage proportional and resonance gain of port shore power source or reducing the DC voltage proportional gain of ship PWM rectifier load can enhance the stability of the port shore power supply system.Finally,the effectiveness of the impedance model and stability analysis results are veri⁃fied by the experimental results based on the hardware in the loop experimental platform.
作者
陈辉
潘雄文
曾灿林
宋先勇
蒲贞洪
郭健
陈燕东
CHEN Hui;PAN Xiongwen;ZENG Canlin;SONG Xianyong;PU Zhenhong;GUO Jian;CHEN Yandong(Yueyang Power Supply Company,State Grid,Yueyang 414000,China;National Electric Energy Conversion and Control Engineering Technology Research Center,Hunan University,Changsha 410000,China)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第4期128-135,共8页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(52077070)
国网湖南省电力有限公司科技项目(5216F021017X)。
关键词
港口岸电电源
虚拟同步控制
阻抗建模
系统稳定性
port shore power supply
virtual synchronous control
impedance modeling
stability analysis
