| 风电场经VSC-HVDC并网故障穿越协调控制策略 |
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| 作者姓名： | 鲁裕婷 赵天乐 都洪基 |
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| 作者单位： | 南京理工大学,南京理工大学,南京理工大学 |
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| 基金项目： | 国家电网有限公司总部科技项目“适应交直流混联受端电网的大规模海上风电接入方式优化及运行控制技术研究” |
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| 摘 要： | 近年来基于电压源换流器的高压直流(VSC-HVDC)输电技术发展迅速,为保证电网安全运行,经VSC-HVDC并网的风电场必须具备故障穿越能力。文中研究风电场经VSC-HVDC并网时的故障穿越能力,针对并网点故障换流站传输有功降低使得交流系统和直流系统功率不平衡,造成直流电压迅速升高影响系统运行的问题,设计了一种基于传统耗能电阻电路而改进的耗能电阻拓扑结构。当电网侧发生故障时,通过投入耗能电阻吸收功率差额并且结合风电机组进行协调控制,使得VSC-HVDC风电并网系统能够顺利平稳地穿越故障。最后,在PSCAD/EMTDC搭建基于VSC-HVDC的风电场并网模型,验证了所提方法的有效性。
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| 关 键 词： | 基于电压源换流器的高压直流(VSC-HVDC) 风电场 故障穿越能力 耗能电阻拓扑 协调控制 |
| 收稿时间： | 2019/6/17 0:00:00 |
| 修稿时间： | 2019/11/17 0:00:00 |
A coordination control strategy of integrated wind farm low voltage ride-through based on VSC-HVDC |
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| Authors: | LU Yuting ZHAO Tianle DU Hongji |
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| Affiliation: | Nanjing University of Science and Technology,Nanjing University of Science and Technology,Nanjing University of Science and Technology |
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| Abstract: | The technology of HVDC based on VSC developed rapidly in recent years. To ensure the safe operation of power grid, the fault-crossing capability has become a basic demand for wind farms connected by HVDC transmission. The paper researches on the fault-crossing capability of VSC-HVDC connected wind farm. Based on the traditional energy-dissipating resistance circuit, a new resistance topology is proposed. When the fault occurs on the grid side, coordinated control is carried out with wind turbines and new resistance topology, which makes the VSC-HVDC system cross the fault smoothly. Finally, the model of wind farm connected by VSC-HVDC is built in PSCAD/EMTDC and dynamic simulations are presented to assess the performance of the control method which is proposed.#$NLKeywords: fault-crossing ability; new resistance topology; coordinated control |
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| Keywords: | fault-crossing ability new resistance topology coordinated control |
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