受端多端的混合直流系统输送风电的控制策略研究
发布时间：2018-09-14 13:51
【摘要】：目前大规模风电场均采用风火打捆直流孤岛外送的输送方式,而对于没有风火打捆条件的风场,特别是海上风电场,采用风火打捆方式输送风电将会大大增加投资,甚至是不可行的。考虑到晶闸管器件在整流侧的优点以及在逆变侧容易发生换相失败故障,结合IGBT的全控特性,提出了受端多端的混合直流系统输送风电的控制策略。该策略整流侧采用传统直流器件,逆变侧采用VSC器件,根据两者之间的特性,给出了拓扑图和控制流程图,提出了主从控制方式。该策略既充分利用了整流侧传统器件的容量,也利用了VSC的可控特性,从而实现将波动的风电输送至负荷中心。某实际风电场的规模数据搭建了仿真模型,并对仿真结果进行分析。仿真结果验证所提策略的有效性。
[Abstract]:At present, wind and fire bundles are used in large scale wind farms to deliver wind power out of isolated islands. For wind fields without wind and fire bundles, especially offshore wind farms, the use of wind and fire bundles will greatly increase the investment in the transmission of wind power. Not even feasible. Considering the advantages of thyristor devices on the rectifier side and the fault of commutation failure on the inverter side, combined with the full control characteristics of IGBT, the control strategy for the transmission of wind power in the multi-terminal hybrid DC system is proposed. The conventional DC device is used in the rectifier side of the strategy, and the VSC device is used in the inverter side. According to the characteristics between the two devices, the topology diagram and control flow chart are given, and the master-slave control mode is proposed. This strategy not only makes full use of the capacity of the traditional device on the rectifier side, but also utilizes the controllable characteristics of the VSC, so that the fluctuating wind power can be transported to the load center. The simulation model of scale data of a wind farm is built, and the simulation results are analyzed. Simulation results verify the effectiveness of the proposed strategy.
【作者单位】： 国网冀北电力有限公司技能培训中心;
【分类号】：TM721.1;TM614
，
本文编号：2242892
[Abstract]:At present, wind and fire bundles are used in large scale wind farms to deliver wind power out of isolated islands. For wind fields without wind and fire bundles, especially offshore wind farms, the use of wind and fire bundles will greatly increase the investment in the transmission of wind power. Not even feasible. Considering the advantages of thyristor devices on the rectifier side and the fault of commutation failure on the inverter side, combined with the full control characteristics of IGBT, the control strategy for the transmission of wind power in the multi-terminal hybrid DC system is proposed. The conventional DC device is used in the rectifier side of the strategy, and the VSC device is used in the inverter side. According to the characteristics between the two devices, the topology diagram and control flow chart are given, and the master-slave control mode is proposed. This strategy not only makes full use of the capacity of the traditional device on the rectifier side, but also utilizes the controllable characteristics of the VSC, so that the fluctuating wind power can be transported to the load center. The simulation model of scale data of a wind farm is built, and the simulation results are analyzed. Simulation results verify the effectiveness of the proposed strategy.
【作者单位】： 国网冀北电力有限公司技能培训中心;
【分类号】：TM721.1;TM614
，
本文编号：2242892
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