Experimental device and test method for insulation test and temperature detection of high-voltage bushing
A technology of high-voltage bushings and experimental devices, which is applied in the direction of measuring devices, testing dielectric strength, and measuring electricity, and can solve problems such as the inability to quantitatively reflect the laws of thermal effects
Pending Publication Date: 2021-10-22
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology
[0004] However, the traditional test methods include measuring the variation of insulation performance under load, or arranging temperature measurement points during the temperature rise test to monitor the internal temperature change of the high-voltage bushing in real time. When these two methods are operated alone, they cannot quantitatively reflect the thermal effect on the insulation performance. law of influence
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[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0028] refer to figure 1 , is an experimental device 1 for high-voltage bushing insulation testing and temperature detection disclosed in the present invention, including a high-voltage bushing assembly 10, an oil tank assembly 20, a temperature measurement assembly 30, and an insulation performance measurement assembly 40; the oil tank assembly 20 houses There is oil, the bottom end of the high voltage bushing assembly 10 is inserted into the oil tank assembly 20 and immersed in the oil, the oil is used to provide an insulating environment for the high voltage bushing assembly 10; the oil tank assembly 20 is used to simulate the actual operating environment, As a result, the accuracy of the results of the insulation characteristic detection and temperature detection of the high voltage bushing by the experimental device 1 is improved.
[0029]In this embodi...
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The invention relates to an experimental device for insulation test and temperature detection of a high-voltage bushing and a test method, and belongs to the technical field of power equipment detection. According to the test device, oil is contained in an oil tank assembly, and a connecting mechanism is arranged between a first high-voltage bushing and a second high-voltage bushing; wherein the bottom end of the first high-voltage bushing and the bottom end of the second high-voltage bushing are both inserted into the oil tank assembly, the first high-voltage bushing is connected with the temperature measuring assembly, and the second high-voltage bushing is connected with the insulating property measuring assembly; the temperature measuring assembly is used for measuring and recording the temperature in the first high-voltage bushing; the insulating property measuring assembly is used for measuring the insulating property of the second high-voltage bushing; the test method comprises the steps of temperature measurement, insulation characteristic measurement, repeated temperature measurement, repeated insulation characteristic measurement and repeated next current point test. According to the arrangement, the heating and heat transfer rules of the high-voltage bushing in the operation state and the influence rule of the heat effect on the insulating property of the high-voltage bushing can be obtained at the same time.
Description
technical field [0001] The invention relates to the technical field of electrical equipment testing and detection, in particular to an experimental device and testing method for high-voltage bushing insulation testing and temperature testing. Background technique [0002] At present, high-voltage bushings are used in power transmission and transformation projects to pass current-carrying conductors through metal boxes or valve hall walls of equipment with different potentials, to introduce or lead out full voltage and full current, and play the role of insulation and support. In terms of electrical stress, the high-voltage bushing is affected by radial and axial field strength; in terms of operating temperature, the high-voltage bushing's current-carrying heat and dielectric loss heat will further increase the operating temperature of the high-voltage bushing, and the operating conditions are extremely harsh. The reliability of the operation of the high-voltage bushing is di...
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IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 张寒许佐明胡伟万保权叶奇明谢雄杰罗晓庆尹朋博刘泰蔚贺林
Owner CHINA ELECTRIC POWER RES INST