A Protection System for Improved Ring-Bus DC Microgrids

被引：1
|
作者：
Zhang, Zhiming [1 ]
Chen, Qing [1 ]
Xie, Ranran [2 ]
Zheng, Yi [3 ]
机构：
[1] Shandong Univ, Key Lab Power Syst Intelligent Dispatch & Control, Minist Educ, Jinan 250061, Shandong, Peoples R China
[2] State Grid Tianjin BinHai Elect Power Supply Co, Tianjin 300450, Peoples R China
[3] State Grid Jining Power Supply Co, Jining 272000, Peoples R China
来源：
ENERGIES | 2019年 / 12卷 / 19期
基金：
中国国家自然科学基金;
关键词：
DC microgrid; system structure; local protection; centralized pilot protection; CONVERTERS; STRATEGY; SCHEME; UNIT;
D O I：
10.3390/en12193778
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
An improved system structure and a corresponding protection system are proposed in this paper, which aims at providing future DC microgrids with suitable protection ideas. At first, the ring-bus system is adjusted to balance the system control and protection and make the system more conventional for the equipment expansion. In addition, based on this structure, a protection system is established. It consists of two parts, which are local protection and pilot centralized protection. The local protection is designed for protecting the vulnerable power electronic components in converters and the pilot protection is mainly proposed for the fault isolation. The combination between two parts makes the whole system overcome the contradiction between protection speed and reliability and the method also takes the protection suitability into consideration. Finally, all the methods are verified by the simulation system based on the PSCAD /EMTDC.
引用
收藏
页数：14
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