| 电网故障情况下网侧变流器并网控制算法探讨 |
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| 引用本文： | 万承宽,张川,赖成毅.电网故障情况下网侧变流器并网控制算法探讨[J].东方电气评论,2012,26(4):46-50. |
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| 作者姓名： | 万承宽 张川 赖成毅 |
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| 作者单位： | 东方日立(成都)电控设备有限公司,成都,611731 |
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| 摘 要： | 随着风力以及光伏发电等可再生能源发电系统并网容量的日益增大，网侧变流器在电网故障情况下的正常运行变得尤为重要。针对电网故障情况下网侧变流器低电压穿越问题，本文讨论了在电网对称故障以及非对称故障时的控制方法，并对非对称跌落过程中的两种控制方法进行了比较，最后仿真证明了上述控制方法的有效性。
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| 关 键 词： | 并网逆变器 低电压穿越 直驱系统 光伏系统 数字锁相环 |
Discussion on the Control Strategy of Grid Inverter under Grid Fault |
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| WAN Cheng-ruan
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ZHANG Chuan
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LAI Cheng-yi.Discussion on the Control Strategy of Grid Inverter under Grid Fault[J].Dongfang Electric Review,2012,26(4):46-50. |
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| Authors: | WAN Cheng-ruan ZHANG Chuan LAI Cheng-yi |
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| Affiliation: | (Dongfang,Hitachi(CD) Electric Control Equipments Co.Ltd.,611731,Chengdu,China) |
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| Abstract: | With increasing injection power from the wind farms and other renewable energy resource to the grid, it is particularly important for the stability and reliability operation of the grid converter under grid fault. The control strategies of the grid converter under grid symmetrical and asymmetric fault are discussed in this paper, and also the two control strategies under grid asymmetric fault are compared. The simulation results verify the theoretical analysis and the effectiveness of the proposed strategy. |
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| Keywords: | grid inverter low voltage ride through direct drive system solar energy system digital phase locked loop |
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