Automatic Generation Technology of Safety Measures for Digital Substation Based on Improved Support Vector Machine

doi:10.11930/j.issn.1004-9649.202303067

Abstract

Abstract:

A digital substation safety measure automatic generation technology based on improved support vector machine is proposed to address the low efficiency of secondary maintenance safety measures in digital substations. Firstly, construct a secondary circuit model and equipment model based on adjacency matrix, and further integrate the secondary security measure rule library to form a sample dataset; Secondly, support vector machines were used to classify secondary security measures, and bacterial foraging algorithms were introduced to optimize penalty factors and kernel parameters, effectively improving the training effectiveness of the automatic generation model for security measures; Finally, the effectiveness of the proposed method was verified through numerical examples.

Key words: digital substation, secondary circuit model, secondary device model, improved support vector machine

Yabing YAN, Xu CHU, Haolong XIAO, Wenwu LIANG, Hui LI, Zhenxing XIA. Automatic Generation Technology of Safety Measures for Digital Substation Based on Improved Support Vector Machine[J]. Electric Power, 2023, 56(10): 194-201.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202303067

https://www.electricpower.com.cn/EN/Y2023/V56/I10/194

Figures/Tables 11

Fig.1 The system of automatic generation of secondarysafety measures

Fig.2 Secondary circuit connection

Fig.3 The structure of secondary equipment model

Table 1 Code of safety measures

隔离方式		编码
无须操作		1
退出GOOSE软压板		2
退出SV软压板		3
投入检修压板		4
退出出口硬压板		5
断开光纤		6

Fig.4 The flow chart of automatic generation of safety measures based on BFA-SVM

Fig.5 The process of BFA-SVM parameter optimization

Fig.6 The results of BFA-SVM testing

Table 2 Classification accuracy of different models 单位：%

隔离方式	PSO-SVM	ABC-SVM	BFA-SVM
无须操作	100.0	100.0	100
退出GOOSE软压板	78.6	85.7	100
退出SV软压板	85.7	92.8	100
投入检修压板	80.0	90.0	100
退出出口硬压板	100.0	100.0	100
断开光纤	100.0	100.0	100
综合准确率	88.3	93.3	100

Fig.7 The connection diagram of associated model of line protection device

Fig.8 The interface of system navigation

Fig.9 Secondary safety measure ticket

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