A d-axis based current differential protection scheme for an active distribution network

被引：26
作者：
Zang, Lindong [1 ]
Zou, Guibin [1 ]
Zhou, Chenghan [1 ]
Zheng, Maoran [2 ]
Du, Tao [3 ]
机构：
[1] Shandong Univ, Sch Elect Engn, Jinan, Peoples R China
[2] China Southern Power Grid, Power Dispatching & Control Ctr, Guangzhou, Peoples R China
[3] Shandong Shanda Elect Power Technol Co LTD, Jinan, Peoples R China
来源：
PROTECTION AND CONTROL OF MODERN POWER SYSTEMS | 2022年 / 7卷 / 01期
关键词：
Inverter-interfaced distributed generator; Active distribution network; D-axis current; Differential protection; Sampling value;
D O I：
10.1186/s41601-022-00243-0
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：
The emergence of distributed generators has changed the operational mode and fault characteristics of the distribution network, in a way which can severely influence protection. This paper proposes a d-axis-based current differential protection scheme. The d-axis current characteristics of inverter-interfaced distributed generators and synchronous generators are analyzed. The differential protection criterion using sampling values of the d-axis current component is then constructed. Compared to conventional phase-based current differential protection, the proposed protection reduces the number of required communication channels, and is suitable for distribution networks with inverter-interfaced distributed generators with complex fault characteristics. Finally, a 10 kV active distribution network model is built in the PSCAD platform and protection prototypes are developed in RTDS. Superior sensitivity and fast speed are verified by simulation and RTDS-based tests.
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页数：11
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