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| 摘要: |
| 基于EMTP/ATP程序研究高压直流输电(HVDC)换流器的暂态特性,需要建立控制及电气元件的详细模型,同时,在进行仿真研究时,尤其是当HVDC换流器与弱交流系统相联时,需特别注意电磁暂态过程本身所具有的复杂特性。基于EMTP程序,并考虑到HVDC联于弱交流系统时的情况,建立了详细的HVDC整流器仿真模型,包括门极触发单元(GFU)、电流控制器、阀缓冲电路等,同时,为缩短仿真初始化时间,还在电流控制器中引入了延迟阶跃信号DS。最后,基于CIGRE标准模型对所建立的HVDC整流器EMTP仿真模型进行了测试,仿真结果表明,系统对于正常的电流调节及突发故障均表现出良好的动态性能。 |
| 关键词: 高压直流输电,换流器建模,电磁暂态,弱交流,仿真 |
| DOI： |
| 分类号:TM721.1 |
| 基金项目: |
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| Modeling and simulation of HVDC rectifier based on EMTP/ATP |
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WU Lei WANG Yin-le ZHANG Xiao-ning
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| Abstract: |
| The detailed modeling of controls and power system elements is required in the transient performance study of HVDC(High Voltage DC transmission) converter using EMTP/ATP.Furthermore,inherent complexities of EMTP should be carefully considered during simulation,particularly when the HVDC converter is operated with a weak AC system,for which a detailed HVDC rectifier simulation model is established based on EMTP / ATP,including gate firing unit,current controller and valve snubber.A delayed step signal DS is introduced in the current controller to shorten the initialization time.The HVDC rectifier simulation model is tested on CIGRE benchmark model.Simulation results show that good dynamic performance can be expected for both ordinary current control and accidental fault. |
| Key words: HVDC,rectifier,EMTP,weak AC,simulation |
