A test method for vibration fatigue performance of insulators
A technology of vibration fatigue and testing methods, applied in vibration testing, testing of machine/structural components, measuring devices, etc., can solve the problem of insulator vibration fatigue performance that is difficult to directly evaluate, does not propose quantitative assessment indicators for key test parameters, and does not apply to insulator fatigue Performance testing and other issues
Active Publication Date: 2020-06-26
CHINA ELECTRIC POWER RES INST +1
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[0005] In view of this, the present invention proposes a test method for the vibration fatigue performance of insulators, aiming to solve the problem that the existing vibration fatigue test method is not suitable for the test of the fatigue performance of large-tonnage insulators, and the quantitative assessment indicators for key test parameters are not proposed, which makes it difficult to evaluate Problems of Vibration Fatigue Performance of Insulators
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[0020] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0021] see figure 1 , which shows a flow chart of a testing method for vibration fatigue performance of an insulator provided by an embodiment of the present...
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The invention provides a method for testing the insulator vibration fatigue performance. The method comprises the following steps: carrying out a mechanical damage test on a to-be-tested insulator, and determining the mechanical damage value Fcon of the to-be-tested insulator according to the testing result; selecting to-be-tested insulators the same as that in the last step, carrying out a vibration fatigue test on an insulator string consisting of the to-be-tested insulators, and determining the number of vibration damage times of the to-be-tested insulators when an arbitrary insulator is damaged; and carrying out a mechanical damage test on the insulator which is not damaged in the vibration fatigue test, determining the mechanical damage value Ff of the insulator which is not damaged, and determining the residual mechanical strength of the to-be-tested insulators according to the mechanical damage value Ff of the insulator which is not damaged and the mechanical damage value Fcon of the to-be-tested insulator. The method can be used for providing a quantitative checking index of a key test parameter to insulator fatigue performance testing, and is beneficial to directly evaluating the vibration fatigue performance of insulators.
Description
technical field [0001] The invention relates to the technical field of testing the vibration fatigue performance of insulators, in particular to a testing method for the vibration fatigue performance of insulators. Background technique [0002] At present, the load levels of direct current transmission machinery in various countries in the world are mostly 120kN, 160kN, 210kN, and 300kN. In order to test the vibration fatigue performance of insulators, the traditional breeze vibration fatigue test method is usually used to carry out at least 30 million vibrations, which takes a long time and cannot It truly reflects the influence of long-term fatigue on the mechanical properties of insulators. [0003] Most of the DC transmission line insulators used in my country are 420kN and 550kN. With the increase of high-voltage DC transmission capacity and voltage level, 1250mm 2 The application of wires requires insulators to be connected in parallel in multiple series to meet the s...
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IPC IPC(8): G01M7/02
CPCG01M7/02
Inventor 姚修远周军
Owner CHINA ELECTRIC POWER RES INST