Partition method of t-test wide-area protection area based on rough set theory

被引：0

作者：

Li W. ^{[1
]}

Yun Z. ^{[1
]}

Zhang S. ^{[1
]}

Bian D. ^{[1
]}

Zhang D. ^{[1
]}

机构：

[1] School of Electrical Engineering, Northeast Electric Power University, Jilin

来源：

Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 19期

关键词：

Protection area division; Reduction of redundant information; Rough set theory; T-test; Wide-area relay protection;

D O I：

10.19783/j.cnki.pspc.181221

中图分类号：

学科分类号：

摘要：

In the wide area relay protection of power system, reasonable and correct protection area division is the key to improve the selectivity and sensitivity of relay protection. In modern power grid, based on the principle of longitudinal comparison, the partition method of wide-area protection area is carried out, the protection area of each IED is determined according to the relationship between IED and line or bus, and the division principle is relatively simple. With the gradual formation of interconnected large-scale power grid, the network structure is complicated and the topology structure is changeable, simple protection area division based on the principle of protection area division can no longer meet the requirements of wide-area relay protection area division of power system. Therefore, this paper proposes a new method of t-test area partition based on rough set theory. When the system structure changes, this method can use the function of reducing redundant information by rough set theory to find the protection range dynamically; use t-test method to determine the wide-area protection range of each IED; verify it by CEPRI-36 node simulation system model. This method does not depend entirely on the structural relationship of the system to divide the protected area, and has better applicability to the network with changeable structure. © 2019, Power System Protection and Control Press. All right reserved.

引用

页码：122 / 130

页数：8

共 22 条

[1]

Luo J., Yu C., Xie Y., Et al., A review on risk assessment of power grid security and stability under natural disasters, Power System Protection and Control, 46, 6, pp. 158-170, (2018)

[2]

Yan J., Xu J., Ni M., Et al., Influence of communication system interruption on wide area protection and control system of power grid, Automation of Electric Power Systems, 40, 5, pp. 17-24, (2016)

[3]

Wang T., Zhang K., Wen B., Et al., Analysis of the influence of large transformer neutral point series suppressing DC current capacitance on relay protection, Electric Power, 50, 7, pp. 164-174, (2017)

[4]

Li B., Liu Y., Li H., Et al., Security issues of power information system from Ukrainian blackout accidents, Electric Power, 50, 5, pp. 71-77, (2017)

[5]

Mallikarjuna B., Varma P.V.V., Samir S.D., Et al., An adaptive supervised wide-area backup protection scheme for transmission lines protection, Protection and Control of Modern Power Systems, 2, 2, pp. 229-244, (2017)

[6]

Li Z., Yin X., Zhang Z., Et al., Adaptive identification method for wide area relay protection fault area, Automation of Electric Power Systems, 35, 16, pp. 15-20, (2011)

[7]

Wu S., An adaptive limited wide area differential protection for power grid with micro-sources, Protection and Control of Modern Power Systems, 2, 2, pp. 220-228, (2017)

[8]

Kong D., Lu F., An algorithm of wide area protection based on regional multi information fusion, Power System Protection and Control, 45, 4, pp. 26-32, (2017)

[9]

Liu Y., Hua H., Li L., Et al., Research and application of multi-level wide-area protection system, Power System Protection and Control, 43, 5, pp. 112-122, (2015)

[10]

Li Z., Yin X., Zhang Z., Et al., System structure and fault identification of wide area relay protection in sub-regions, Proceedings of the CSEE, 31, 28, pp. 95-103, (2011)

← 1 2 3 →