High Level Seismic Qualification Test of High Voltage Porcelain Insulator Disconnector in Chile High Earthquake Intensity Area
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摘要: 为获取户外高压隔离开关的动态特性、研究瓷瓶破断力与地震载荷的关系以及验证隔离开关的抗震性能，开展了相关的考核试验。依据IEEE 693—2005标准的要求，试验前进行了应变计的校准试验、瓷瓶的弯曲破断试验和隔离开关的抗震性能试验。经过抗震试验，隔离开关完好无损且在抗震试验前后其共振频率变化不大，瓷瓶破断力大于地震载荷的2倍。结果表明隔离开关结构稳定，通过了抗震考核。Abstract: In order to obtain the dynamic characteristics of the outdoor high voltage disconnector and the relationship between the breaking force of the porcelain insulator and the earthquake load, and to verify the seismic performance of the disconnector, the calibration test of the strain gauge is carried out before the seismic test, the bending breaking test of the porcelain insulator is carried out on the basis of the requirements of the IEEE 693—2005 standard. Then the seismic performance test of the disconnector is conducted. After seismic testing, the disconnector is intact, and the resonance frequency of the porcelain insulator does not changed before and after the seismic test. The breaking force of the porcelain insulator is 2 times greater than that of the earthquake load. The result shows that the structure of the disconnector is stable to bear the seismic assessment.
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图 1 样件总装图和应变片位置示意图
Figure 1. General assembly drawing of specimen and diagram of strain gauge position
图 2 瓷柱1纵向和横向力-应变校验图
Figure 2. Force and strain check diagram of porcelain column 1 in longitudinal and lateral direction
图 3 瓷柱2纵向和横向力-应变校验图
Figure 3. Force and strain check diagram of porcelain column 2 in longitudinal and lateral direction
图 7 抗震试验前、后测点T1的传递函数对比
Figure 7. Comparison of transfer function of T1 at three points before and after seismic test
表 1 样件参数
Table 1. Parameters of specimen
型号 额定电压 额定短时耐受电流 额定频率 额定电流 质量 GW4C-252D(G·W)/J4000-50 252kV 50kA 50Hz，60Hz 4000A 650kg 
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表 2 力-应变测量结果
Table 2. Results of force and strain measurements
施加力/N 应变×10-6 S1—S3 S2—S4 S5—S7 S6—S8 S9—S11 S10—S12 S13—S15 S14—S16 245 25.16 25.16 29.15 26.21 35.07 36.19 32.12 35.77 490 45.75 50.58 45.92 46.48 63.00 65.06 59.89 62.41 735 76.44 76.29 86.32 68.88 92.62 94.45 95.41 94.45 980 92.00 95.60 108.51 91.38 125.33 125.15 119.51 119.12 735 71.07 85.60 69.75 95.98 94.85 92.52 490 47.04 60.43 46.81 63.85 64.26 62.56 245 23.51 29.65 22.33 34.61 31.44 33.06
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表 3 瓷瓶绝缘子支柱样品的破断力
Table 3. Fracture force of the pillar sample of porcelain insulator
样品编号 1 2 3 4 5 6 7 8 破断力Fi/kN 10.71 9.95 11.57 10.86 10.49 9.13 11.12 9.65
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表 4 主刀合、地刀分状态下振动响应探查结果
Table 4. The first order resonance frequency from vibration response detecting with the main cutter on and the ground cutter off
方向 一阶共振频率/Hz 测点T1 测点T2 测点T3 测点T4 横向 3.5 3.5 3.0 3.0 纵向 3.5 3.5 3.5 3.5 垂向 ＞33 ＞33 ＞33 ＞33
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表 5 主刀分、地刀合状态下振动响应探查结果
Table 5. The first order resonance frequency from vibration response detecting with the main cutter off and the ground cutter on
方向 一阶共振频率/Hz 测点T1 测点T2 测点T3 测点T4 横向 3.5 3.5 3.5 3.5 纵向 3.5 3.5 3.0 3.0 垂向 ＞33 ＞33 ＞33 ＞33
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表 6 主刀分、地刀分状态下振动响应探查结果
Table 6. The first order resonance frequency from vibration response detecting before seismic when the main cutter off and the ground cutter off
方向 一阶共振频率/Hz 测点T1 测点T2 测点T3 测点T4 横向 3.5 3.5 3.0 3.0 纵向 3.5 3.5 3.5 3.5 垂向 ＞33 ＞33 ＞33 ＞33
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表 7 RRS考核试验过程中应变试验值
Table 7. Strain value in the process of RRS test
抗震考核试验 状态 应变×10-6 S1—S3 S2—S4 S5—S7 S6—S8 S9—S11 S10—S12 S13—S15 S14—S16 RRS1 主刀合、地刀分 62.90 109.34 65.60 87.11 130.95 168.98 159.85 176.66 RRS2 主刀分、地刀合 139.9 111.63 174.67 102.67 180.44 193.11 233.60 190.15 RRS3 主刀分、地刀分 99.83 116.71 169.71 102.66 165.25 184.20 170.38 186.64
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表 8 RRS考核试验过程中加速度测量值
Table 8. The acceleration measurement value during the RRS assessment test
抗震考核试验 TT加速度/g T1加速度/g T2加速度/g T3加速度/g T4加速度/g X轴 Y轴 Z轴 X轴 Y轴 Z轴 X轴 Y轴 Z轴 X轴 Y轴 Z轴 X轴 Y轴 Z轴 RRS1 0.583 0.605 0.449 2.031 1.522 0.629 1.694 0.904 0.527 1.647 1.738 0.628 1.636 1.035 0.528 RRS2 0.587 0.633 0.426 1.756 2.069 0.566 1.064 1.678 0.507 2.063 1.939 0.563 1.236 1.537 0.592 RRS3 0.581 0.604 0.445 1.857 1.778 0.505 1.012 1.625 0.482 1.869 1.783 0.507 1.041 1.670 0.475 注：TT为台面加速度。
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表 9 RRS考核试验中坐标轴的相关系数
Table 9. Correlation coefficient of three coordinate axes in RRS assessment test
抗震考核试验 相关系数 X-Y轴 Y-Z轴 Z-X轴 RRS1 0.007 0.059 0.085 RRS2 0.007 0.059 0.085 RRS3 0.007 0.059 0.085
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表 10 试后主刀合、地刀分状态下振动响应探查
Table 10. The first order resonance frequency from vibration response detecting after seismic with the main cutter on and the ground cutter off
方向 一阶共振频率/Hz 测点T1 测点T2 测点T3 测点T4 横向 3.0 3.0 3.0 3.0 纵向 3.5 3.5 3.5 3.5 垂向 ＞33 ＞33 ＞33 ＞33
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表 11 试后主刀分、地刀合状态下振动响应探查
Table 11. The first order resonance frequency from vibration response detecting after seismic with the main cutter off and the ground cutter on
方向 一阶共振频率/Hz 测点T1 测点T2 测点T3 测点T4 横向 3.0 3.0 3.0 3.0 纵向 3.5 3.5 3.5 3.5 垂向 ＞33 ＞33 ＞33 ＞33
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表 12 试后主刀分、地刀分状态下振动响应探查
Table 12. The first order resonance frequency from vibration response detecting after seismic with the main cutter off and the ground cutter off
方向 一阶共振频率/Hz 测点T1 测点T2 测点T3 测点T4 横向 3.0 3.0 3.0 3.0 纵向 3.5 3.5 3.5 3.5 垂向 ＞33 ＞33 ＞33 ＞33
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表 13 地震载荷计算
Table 13. Calculation of seismic load
抗震试验 S1—S3和S2—S4中
应变较大者×10-6相应地震载荷
FS/NS5—S7和S6—S8中
应变较大者×10-6相应地震载荷
FS/NRRS1 109.34(S2—S4) 897 87.11(S6—S8) 936 RRS2 139.9(S1—S3) 1491 174.6(S5—S7) 1578 RRS3 116.71(S2—S4) 1196 169.7(S5—S7) 1533
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表 14 瓷瓶绝缘子支柱样品的破断力(kN)
Table 14. Fracture force of the pillar sample of porcelain insulator (kN)
样品编号 破断力${F_i}$ 平均值$\bar F$ ${F_i} - \bar F$ ${({F_i} - \bar F)^2}$ 标准差$\sigma = \sqrt {\frac{{\sum {{{\left({{F_i} - \bar F} \right)}^2}} }}{{i - 1}}} $ 1 10.71 10.435 0.275 0.075 0.807 2 9.95 -0.485 0.235 3 11.57 1.135 1.29 4 10.86 0.425 0.180 5 10.49 10.435 0.055 0.003 0.807 6 9.13 -1.305 1.70 7 11.12 0.685 0.470 8 9.65 -0.785 0.616
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表 15 K值与样品数关系
Table 15. The relation between the K-value and the number of the samples
样品数i 1 3 10 K值 0.66 0.8 1
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