深远海全直流风电汇集网络故障控制与恢复方案

丁华星; 邹贵彬; 王凤莲; 丁宁

doi:10.19912/j.0254-0096.tynxb.2023-0997

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (10) : 616-624. DOI: 10.19912/j.0254-0096.tynxb.2023-0997

深远海全直流风电汇集网络故障控制与恢复方案

丁华星¹, 邹贵彬¹, 王凤莲¹, 丁宁²

作者信息 +

FAULT CONTROL AND RESTORATION SCHEME OF DC COLLECTION NETWORK FOR ALL-DC OFFSHORE WIND FARM

Ding Huaxing¹, Zou Guibin¹, Wang Fenglian¹, Ding Ning²

Author information +

文章历史 +

摘要

针对全直流海上风场汇集网络故障处理问题,首先研究直流风电机组的故障控制策略,通过机侧换流器故障控制与卸荷电路配合的方式提高机组的安全性;其次,设计一种改进风电机组网侧DC/DC变换器拓扑,通过控制DC/DC变换器网侧电容脉冲放电进行行波测距,从而定位故障区段;最后,提出基于直流断路器的汇集网故障控制与恢复方案。利用PSCAD搭建全直流海上风电场模型,多种故障场景下的仿真验证了所提故障控制与恢复方案的有效性。

Abstract

This paper focuses on addressing the network fault handling problem in all-DC offshore wind farms. Firstly, fault control strategies for DC wind turbine units are investigated to enhance the safety of the units using the machine-side converter and unloading chopper circuits. Secondly, an improved topology of the grid-side DC/DC converter for DC wind turbines is proposed, which utilizes pulsed discharge of the grid-side capacitor in the DC/DC converter to perform traveling wave-based fault location. Finally, a fault control and restoration scheme based on DC circuit breakers is presented for the DC collection network. An all-DC wind farm model is built in PSCAD/EMTDC, and the effectiveness of the proposed fault control and restoration strategies is verified through simulations in various fault scenarios.

导出引用

丁华星, 邹贵彬, 王凤莲, 丁宁. 深远海全直流风电汇集网络故障控制与恢复方案[J]. 太阳能学报. 2024, 45(10): 616-624 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0997

Ding Huaxing, Zou Guibin, Wang Fenglian, Ding Ning. FAULT CONTROL AND RESTORATION SCHEME OF DC COLLECTION NETWORK FOR ALL-DC OFFSHORE WIND FARM[J]. Acta Energiae Solaris Sinica. 2024, 45(10): 616-624 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0997

中图分类号： TM614

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