A Contactless Pirani Approach for Vacuum Monitoring in Vacuum Circuit Breakers

被引：2

作者：

Sevillano, Juan F. ^{[1
,2
]}

Combarro, Lander ^{[1
]}

Irizar, Andoni ^{[1
,2
]}

Gilbert, Ian Paul ^{[3
]}

Izagirre, Josu ^{[3
]}

Arizti, Fernando ^{[1
,2
]}

机构：

[1] CEIT Basque Res & Technol Alliance BRTA, Donostia San Sebastian 20018, Spain

[2] Univ Navarra, TECNUN, Donostia San Sebastian 20018, Spain

[3] Ormazabal Corp Technol AIE, Amorebieta Etxano 48340, Spain

来源：

IEEE SENSORS JOURNAL | 2023年 / 23卷 / 02期

关键词：

Temperature measurement; Monitoring; Heating systems; Sensors; Cooling; Circuit breakers; Impedance; Condition monitoring; eddy currents (ECs); medium voltage switchgear; signal processing; vacuum circuit breakers (VCBs); PRESSURE;

D O I：

10.1109/JSEN.2022.3226521

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This article presents a method for determining the vacuum state in vacuum circuit breakers (VCBs) based on the Pirani approach. The method relies on exploiting eddy currents (ECs) over a low-cost sheet of iron (target) embedded inside the VCB, which is fixed to the shield of the VCB by a single welding point. This target and its assembly are compatible both with a low-cost manufacturing process and also with the specific fabrication and operating conditions of the VCB. ECs are used both for heating and for monitoring the temperature variation of the target during its cooling. A model based on two exponential kernels has been developed to identify the vacuum state from the cooling kinetics. An experimental setup has been developed to assess the potential performance of the method. The proposed approach is able to discriminate pressures below and above the reliable operating point in VCBs of 10(-1) Pa.

引用

页码：1592 / 1600

页数：9

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