南方电网技术2017，Vol.11Issue(11)：7-12,26,7.DOI:10.13648/j.cnki.issn1674-0629.2017.11.002
双端柔性直流系统无通信时的改进直流电压裕度控制
Improved DC Voltage Margin Control for Two-Terminal VSC-HVDC System Without Communication
郭敬梅 1曾德辉 2黄辉1
作者信息
- 1. 广东电网有限责任公司电力科学研究院,广州 510080
- 2. 华南理工大学,广州 510640
- 折叠
摘要
Abstract
In order to solve DC voltage control problem of two-terminal VSC-HVDC system without communication,on the basis of detailed analysis of existing control modes,an improved DC voltage margin control strategy is proposed in this paper.The proposed controller realizes the exchange of different control modes before PI controller by constructing an error function and weigh coefficient of quadratic function.Compared with traditional DC voltage margin control priciple,the proposed strategy can simplify the controller structure,and meanwhile it can greatly reduce the limit level of DC voltage during fault-ride-through and power reversal.Simulation results prove the effectiveness of the proposed method.关键词
柔性直流输电/通信丢失/直流电压控制/控制策略Key words
VSC-HVDC/communication loss/DC voltage control/control strategy分类
信息技术与安全科学引用本文复制引用
郭敬梅,曾德辉,黄辉..双端柔性直流系统无通信时的改进直流电压裕度控制[J].南方电网技术,2017,11(11):7-12,26,7.
