福州大学电气工程与自动化学院,福州 350108
王扬程(1999—),男,硕士研究生,研究方向为GIS状态监测(E-mail:1085356630@qq.com)。
关向雨(1986—),男,副教授,硕士生导师,研究方向为电气设备状态检测与故障诊断、电力设备多场耦合数值仿真技术、电弧与电接触等(通信作者)(E-mail:xiangyuguan1986@163.com)。
收稿:2025-10-08,
修回:2025-12-09,
纸质出版:2026-05-16
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王扬程, 关向雨, 赵俊义, 等. 不同接触缺陷下气体绝缘组合电器发热—振动多场耦合数值建模与分析[J]. 高压电器, 2026,62(5):21-32.
WANG Yangcheng, GUAN Xiangyu, ZHAO Junyi, et al. Numerical Modeling and Analysis of Thermal-vibration Multi-field Coupling of GIS Under Different Contact Defects[J]. High Voltage Apparatus, 2026, 62(5): 21-32.
王扬程, 关向雨, 赵俊义, 等. 不同接触缺陷下气体绝缘组合电器发热—振动多场耦合数值建模与分析[J]. 高压电器, 2026,62(5):21-32. DOI: 10.13296/j.1001-1609.hva.2026.05.003.
WANG Yangcheng, GUAN Xiangyu, ZHAO Junyi, et al. Numerical Modeling and Analysis of Thermal-vibration Multi-field Coupling of GIS Under Different Contact Defects[J]. High Voltage Apparatus, 2026, 62(5): 21-32. DOI: 10.13296/j.1001-1609.hva.2026.05.003.
气体绝缘组合电器(gas insulated switchgear,GIS)被广泛运用于电力系统中,其内部触头是实现电气连接的关键部位也是事故多发部位,及时发现机械故障并判断故障类型对维护GIS长期平稳运行有着重要意义。为探究外部温升和振动特征与内部触头故障类型之间的对应关系,文中建立了弹簧缺失(F
1
)、螺栓松动(F
2
)、弹簧接触不良(F
3
)、对接深度不足(F
4
)4种缺陷下的GIS电—热—结构多物理场耦合数值计算模型,通过涡流场和瞬态电磁场计算得到发热功率以及瞬态电动力,将其作为载荷传递到温度场和结构场进而计算不同缺陷状态下的温升特性以及振动特性。在某GIS试验平台开展不同缺陷状态下的发热—振动试验,温升计算值与实测值误差在7.5%以内,加速度计算值与实测值误差在11.2%以内,验证了建立数值模型和触头等效的合理性。结果表明:不同接触缺陷下外壳温度分布存在差异,对接深度不足时触头温升最高,接触缺陷会从电动力分布和机械连接结构两方面改变外壳的振动特性,螺栓缺失条件下,由于机械连接刚度的变化,外壳基频振动幅值下降最为明显。文中内容为基于温升、振动信号的GIS机械故障诊断方法提供了理论依据。
Gas insulated switchgear (GIS) is widely used in power system. The contacts inside the GIS are the key parts to achieve electrical connection and
however
also the parts prone to frequent accident. It is therefore of great significance to find mechanical faults in time and judge the types of faults for maintaining the long-term and stable operation of GIS. In order to explore the corresponding relationship between the external temperature rise and vibration characteristics and the type pf the internal contact fault
in this paper a electro-thermal-structural multi-physical field coupling numerical calculation model of GIS under such four defects as spring missing (F
1
)
bolt looseness (F
2
)
weak spring contact (F
3
) and and insufficient docking depth (F
4
) is set up. The heating power and transient electrodynamic force are obtained by the calculation of eddy current field and transient electromagnetic field
which are uesd as the load to transmit to the temperature field and structural field
thereby calculating the temperature rise characteristi
cs and vibration characteristics under different defect states. The thermal-vibration test under different defect conditions is carried out on a GIS test platform. The error between the calculated value and the measured value of the temperature rise is within 7.5%
and the error between the calculated value of acceleration and the measured value is within 11.2%
which verifies the rationality of setting up numerical model and the contact equivalence. The results show that temperature distribution of the enclosure has difference under different contact defects. The temperature rise of the contact is the highest in case of insufficient docking deptgh. The contact defects will change the vibration characteristics of the enclosure from such two aspects as distribution of electrodynamic force and mechanical connection structure. In case of missing bolts
the fundamental frequency vibration amplitude of the enclosure decreases obviously. The contents in this paper provides a theoretical basis for mechanical fault diagnosis method of GIS based on temperature rise and vibration signal.
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