• 首页|关于本刊|期刊收录|编委阵容|征稿启事|订阅指南|投/审稿指南|诚邀专家|学术道德|English
Latest Papers more>>
Study on Power Distribution Control Strategy of VSG Dual Parallel System Based on DSOGI-PLL
投稿时间:2020-05-31  修订日期:2020-07-21
  查看/发表评论  下载PDF阅读器
DOI:
Keywords:virtual synchronous generator  DSOGI-PLL, frequency secondary regulation, paralleling system, power allocation
Fund Project:Project Supported by Fund Project of Liaoning Education Department
              
AuthorInstitutionEmail
QIU Bin Liaoning Technical University 13591999885@163.com
WANG Xuechun Liaoning Technical University 1025645938@qq.com
SONG Ping psong510@hotmail.com
WANG Kai 28935200@qq.com
YANG Zhen yangzhen1980219@163.com
摘要点击次数: 123
全文下载次数: 0
Abstract:
      Addressing the problem that the power oscillation easily lead by disturbance and frequency stability’s reduction under the condition of parallel operation within the multi-virtual synchronous generator (VSG),a modified virtual synchronous generator control strategy combined with a dual-second generalized intergrator phase-locked loop (DSOGI-PLL) is proposed in this paper .According to the concept,the distribution of the load increment of the common coupling point in the VSG dual-machine parallel system under different working conditions is analyzed,as well as discussing the influence of the key parameters on the power supply capacity distribution of each unit.The power system’s secondary regulation of the frequency is realized by introducing a integral link into the power frequency controller,while the DSOGI-PLL technology is adopted to reduce the disturbance at the position of output power from VSG at the fundamental frequency,so that the degree of power oscillation disturbed during parallel operation of the multi-VSG is suppressed.The simulation results show that, compared with the traditional control strategy, the scheme involved in this paper can effectively reduce the disturbance of the output electric energy from the VSG in the vicinity of the fundamental frequency, reduce the power oscillation level, improve the output electric energy quality under the parallel operation condition, and realize the reasonable distribution of the energy among the units, The applicability of the proposed control strategy used both in the Island mode and grid-connected mode is verified.
关闭