Grid load security domain based on voltage level constraint

被引：0

作者：

Zhu W. ^{[1
]}

Ling C. ^{[1
]}

Zhang Y. ^{[1
]}

Ru L. ^{[2
]}

机构：

[1] College of Electrical & Information Engineering, Changsha University of Science& Technology, Changsha, 410114, Hunan Province

[2] State Grid Hengyang Power Supply Company, Hengyang, 421000, Hunan Province

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2016年 / 36卷 / 23期

关键词：

Load security domain; Load security domain matching; Ratio adjustment; Reactive power compensation; Voltage level constraint;

D O I：

10.13334/j.0258-8013.pcsee.160429

中图分类号：

学科分类号：

摘要：

Voltage stability limits will vary with running states, and far below the normal safety level. Therefore, the analysis of node load security domains based on voltage security level constraints so that the load of each node and reactive power compensation are limited to the region, to maintain grid voltage security, will be more meaningful. The analysis based on Thevenin equivalent model found the load security domains are existed indeed. So, based on line models, the parameters and the rated voltages, the load security domains of both ends of lines had been analyzed to get, that were, enclosed by eccentric arc and P and Q positive axis. By matching of the security domains on both sides of transformers, the load security domains of each node in grid had been obtained; by adjusting the ratio, adjustable the load security domains at the line ends of low-voltage side; reactive power compensation was deemed load adjusted to accommodate the load security domains at the line end of high-voltage side. Case studied to verify the feasibility of load security domain analysis. The study has practical significance distribution grid operation and reactive planning. © 2016 Chin. Soc. for Elec. Eng.

引用

页码：6389 / 6400

页数：11

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