摘要
针对由于新能源发电出力的随机性和以新能源汽车为代表的新一代负荷接入配电网的不确定性所导致的功率不平衡问题,提出了基于储能型SNOP的功率反馈控制策略;该控制策略以交流系统有功功率不平衡所导致的频率差值作为反馈量,并通过功率电流环控制端口变流器的有功功率传输,从而实现根据有功负荷的变化进行有功潮流实时控制,同时储能的加入使SNOP高度集成为一种具有能量存储功能的能量中转装置,可以在一定范围内缓解功率波动,增大了SNOP的调度能力;随后利用DigSILENT/PowerFactory建立储能型SNOP的柔性互联仿真模型,通过投切有功负荷的方式验证了控制策略的有效性;仿真结果表明:该控制策略能够充分利用储能装置实时协调馈线之间的功率平衡。
Aiming at the problem of power imbalance caused by the randomness of new energy generation output and the uncertainty of new generation load access to distribution network represented by new energy vehicles,a power feedback control strategy based on SNOP with energy storage was proposed.This control strategy takes the frequency difference caused by the active power imbalance of the AC system as the feedback quantity,and controls the active power transmission of the converter through the power current loop,so as to realize the real-time control of the active power flow according to the change of the active load.At the same time,the addition of energy storage makes the SNOP highly integrated into an energy transfer device with energy storage function.In a certain range,the power fluctuation can be alleviated and the scheduling ability of SNOP can be increased.Then,a flexible interconnection simulation model of SNOP with energy storage was established by DigSILENT/PowerFactory,and the effectiveness of the control strategy was verified by switching the active load.The simulation results show that the control strategy can make full use of the energy storage to coordinate the power balance between feeders in real time.
作者
陆旭
纪泽宇
陈晨
LU Xu;JI Ze-yu;CHEN Chen(School of Electrical and Information Engineering,Anhui University of Science and Technology,Anhui Huainan 232001,China)
出处
《重庆工商大学学报（自然科学版）》
2021年第2期90-95,共6页
Journal of Chongqing Technology and Business University:Natural Science Edition
基金
电力传输与功率变换控制教育部重点实验室开放课题资助(2020AC01)
安徽理工大学2019创新基金项目(2019CX2046).
关键词
储能型SNOP
功率反馈控制
功率平衡
柔性互联
SNOP with energy storage
power feedback control
power balance
flexible interconnection
