高压电器2023，Vol.59Issue(12)：209-215,7.DOI:10.13296/j.1001-1609.hva.2023.12.025
风力对1100kV GIS出线套管局放缺陷时温度特征的影响分析
Influence of Wind on Temperature Characteristics of 1100 kV GIS Outgoing Bushing with Partial Discharge Defect
摘要
Abstract
For GIS outgoing bushing at 500 kV and below,it has rich experience and cases to diagnose internal par-tial discharge defects by means of infrared temperature measurement.However,1 100 kV GIS outgoing bushing for UHV substation is large in size,relatively complex in its internal shielding structure as well as lacking in relevant de-fect diagnosis experience,and its surface temperature will inevitably be affected by external wind.For some special environments and areas,if we wait the wind speed to meet the requirements of infrared temperature measurement,the diagnosis time may be delayed,resulting in the further development of defects.Therefore,it is necessary to study the influence of wind on temperature characteristics of 1 100 kV GIS outgoing bushing with partial discharge defect.In this paper,the three-dimensional temperature field simulation model of 1100 kV GIS bushing is set up,and the sur-face temperature characteristics of different partial discharge positions are simulated and studied.The influence of wind speed and wind direction on the surface hot spots is further analyzed by using the model of fluid sweeping round pipe.The results show that the surface temperature difference of bushing with partial discharge defect is about 2～3 K,and when the wind speed of the positive wind,the back wind and the side wind at the defect location reach about 5 m/s,6 m/s and 9 m/s respectively,the temperature difference on the surface of the bushing decreases by 2 K compared with that without wind.At this time,there is no obvious hot spot on the surface of the bushing,and if the infrared tem-perature measurement is carried out,it is likely to lead to the missed diagnosis of internal defects.关键词
1000kV GIS/套管/温度特征/局放/有限元Key words
1 000 kV GIS/bushing/temperature characteristic/partial discharge/finite element引用本文复制引用
张丕沛,师伟,李杰,王江伟,商攀峰..风力对1100kV GIS出线套管局放缺陷时温度特征的影响分析[J].高压电器,2023,59(12):209-215,7.基金项目
山东电力研究院科技项目(特高压变电站电压致热型设备温度分布研究及红外诊断方法优化).Project Supported by Science and Technology Project of Shandong Electric Power Research Institute(Study on Temperature Dis-tribution of Voltage-induced Heating Equipment in Ultra-high-voltage Substations and Optimization of Infrared Diagnostic Methods). （特高压变电站电压致热型设备温度分布研究及红外诊断方法优化）
