Anti-error Method of Intelligent Substation Secondary System Based on Decision Tree and Support Vector Machine

doi:10.11985/2023.01.013

Abstract

Abstract:

With the popularization of intelligent substation, the safe operation of power system puts forward higher requirements for the secondary maintenance of substation. In order to solve the problem of misoperation in the process of state transition of secondary equipment, a new anti-misoperation method of secondary system is proposed. First and second equipment status values are obtained through the measuring device to construct the initial sample data set. In order to obtain the required feature vector set of the model, PCA method is adopted to achieve data dimensionality reduction, and the feature vector set is classified by decision tree for secondary operations. SVM training and testing are carried out on the classified sample set to realize the misjudgment prevention of secondary equipment operation. Finally, an anti-error model is constructed, and the simulation test is carried out with the historical operating data to verify the effectiveness of the proposed method.

Key words: Intelligent substation, secondary equipment, decision tree, support vector machine

CLC Number:

TM772

ZHOU Kai, CAO Lin, HU Zhijian, YAN Lixiong, BI Ruyu, DENG Ke, LI Yulei. Anti-error Method of Intelligent Substation Secondary System Based on Decision Tree and Support Vector Machine[J]. Journal of Electrical Engineering, 2023, 18(1): 118-125.

Figures/Tables 9

References 17

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设备名称	符号	状态转换	条件
合并单元	C1	运行转检修	检修压板投入“1”
合并单元	C2	检修转运行	检修压板退出“0”
保护装置	C3	运行转跳闸	满足差流跳闸条件
	C4	运行转检修	检修压板投入“1”
	C5	检修转运行	检修压板退出“0”
	C6	运行转闭锁	保护装置闭锁
	C7	闭锁转运行	保护装置正常
智能终端	C8	运行转跳闸	接收到跳闸信号
	C9	运行转检修	检修压板投入“1”
	C10	检修转运行	检修压板退出“0”
	C11	运行转闭锁	智能终端闭锁
	C12	闭锁转运行	智能终端正常

操作对象	类别	训练数量	测试数量	误判数量	准确率 (%)
合并单元	C1	660	160	0	100
合并单元	C2	500	120	0	100
保护装置	C3	420	100	0	100
	C4	780	200	2	99
	C5	320	80	0	100
	C6	640	160	1	99.4
	C7	800	200	0	100
智能终端	C8	1 200	300	2	99.3
	C9	2 000	500	1	99.8
	C10	1 780	450	2	99.6
	C11	1 520	380	2	99.5
	C12	1 600	400	1	99.8