摘要
针对我国内河流域港口岸电的船舶负荷转供过程的研究,为抑制并网后直接切断船侧柴电系统引起的逆功率与负荷波动问题,提出一种基于船侧负荷由船电转供至岸电的功率逐级切换控制方法。通过分析岸电对船侧负荷转供过程中的功率波动现象,给出基于功率超调和动态响应时间为指标的逐级切换条件,以船侧负荷的电能质量指标为标准,通过对船侧同步电机的输出功率进行逐级调速控制,以降低功率波动以及频率偏移对负荷的负面影响,提高供电质量。通过Simulink平台搭建岸电系统模型进行仿真,这一方法的仿真结果表明了所提出的策略的正确性和有效性,能够实现岸船两侧电力系统的并网后负荷的平稳过渡。
In view of the research on the process of ship load transfer in the shore power of the inland river basins,in order to suppress the reverse power and load fluctuations caused by directly cutting off the diesel power system of ship side after grid connection,a step-by-step power switching control solution based on load transfer from ship power to shore power is proposed in this paper.By analyzing the power fluctuation phenomenon in the process of shore power load transfer,the conditions of step-by-step switching based on power overshoot and dynamic response time are given.Based on the power quality index of the ship side load,the output power of the synchronous motor of ship side is under step-by-step control to reduce the negative impact of power fluctuation and load frequency offset,so as to improve the quality of power supply.A shore power system model is built through Simulink simulation platform,and the simulation results show that the proposed strategy is correct and effective,which can achieve the smooth load transition of power system on both sides of shore ship after grid connection.
作者
刘慧文
邢宏伟
房鑫炎
李亦凡
金力
Liu Huiwen;Xing Hongwei;Fang Xinyan;Li Yifan;Jin Li(State Grid Electric Vehicle Service Co.,Ltd.,Beijing 100031,China;School of Electronic Information and Electrical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)
出处
《电测与仪表》
北大核心
2023年第8期44-50,共7页
Electrical Measurement & Instrumentation
基金
国家电网有限公司总部科技项目(5418-201971157A-0-0-00)。
关键词
岸电
内河流域
负荷转供
逐级切换控制
shore power
inland river
load transfer
step-by-step power switching control
作者简介
刘慧文(1979-),男,高级工程师,硕士,研究方向为电动汽车充换电、岸电技术;邢宏伟(1982-),男,高级工程师,硕士,研究方向为电动汽车充换电、岸电技术;房鑫炎(1963-),男,副教授,博士,研究方向为电力系统继电保护及系统安全;李亦凡(1995-),男,硕士研究生,研究方向为新能源消纳;金力(1996-),男,硕士研究生,研究方向为新能源消纳及岸电控制。
