The paper describes the damping effect of lead alloy absorber (LAA) by shake table test and finite element method of a kind of high-voltage electrical equipment, LW11-252/Q SF6 Circuit Breaker (LSCB). The strain reduc...The paper describes the damping effect of lead alloy absorber (LAA) by shake table test and finite element method of a kind of high-voltage electrical equipment, LW11-252/Q SF6 Circuit Breaker (LSCB). The strain reduction of the porcelain bushing of LSCB is defined as the damping effect of LAA in the paper based on the damage pattern of test equipment under earthquake. The test results show that LAA has reduced the acceleration response and strain response of the LSCB, at the same time, it does not increase the displacement response of the LSCB. There is a reduction of 30% in the strain of porcelain pipe. Moreover, the stronger the input ground motion is, the larger the reduction will be. The finite element method also indicates the damping effect of LAA, especially under ground motions with significant long period contents and ground motions with velocity pulse. Combined with the test results and calculation results, the paper gives the applicability of LAA finally.展开更多
基金Joint Seismological Science Foundation of China (102012) Public Welfare Research Item, Ministry of Science and Technology of China.
文摘The paper describes the damping effect of lead alloy absorber (LAA) by shake table test and finite element method of a kind of high-voltage electrical equipment, LW11-252/Q SF6 Circuit Breaker (LSCB). The strain reduction of the porcelain bushing of LSCB is defined as the damping effect of LAA in the paper based on the damage pattern of test equipment under earthquake. The test results show that LAA has reduced the acceleration response and strain response of the LSCB, at the same time, it does not increase the displacement response of the LSCB. There is a reduction of 30% in the strain of porcelain pipe. Moreover, the stronger the input ground motion is, the larger the reduction will be. The finite element method also indicates the damping effect of LAA, especially under ground motions with significant long period contents and ground motions with velocity pulse. Combined with the test results and calculation results, the paper gives the applicability of LAA finally.
