A Simulating Test Device for Overheating Fault of Insulating Oil

Abstract

The invention provides an insulating oil overheat fault simulation test device. The test device comprises an insulating oil containing device, a sampling device and a heating control device. The insulating oil containing device comprises an air pressure balance device, a condensation flow return device and a quartz flask which are sequentially connected from top to bottom, wherein the quartz flask contains insulating oil, and the side wall of the quartz flask is connected with the sampling device. A heating ring is connected to one end of the heating control device, and the heating ring is arranged on the outer wall of the quartz flask in a sleeving mode. Compared with the prior art, the insulating oil overheat fault simulation test device is simple in constitution, small in occupied space and low in cost; operation of a simulation test is simple and convenient, and the period is short; it is guaranteed that the pressure in the system is always kept to be ordinary pressure, the system is closed, and no gas overflows; the amount of the insulating oil needed by one single test is small, environmental protection is achieved, the cost is saved, and the purpose of developing the research work for insulating oil overheat faults in a small laboratory is achieved.

Description

technical field [0001] The invention relates to the field of high-voltage insulation, in particular to a simulation test device for overheating failure of insulating oil. Background technique [0002] With the improvement of people's awareness of environmental protection, some new green and environmentally friendly insulating oil products have been developed, such as FR3 plant-based insulating oil from COOPER, and rapeseed oil ester insulating oil from Fuji Electric Corporation. However, the three-ratio evaluation standard given in the IEC standard is based on mineral insulating oils, which is not applicable to these new types of insulating oils. In order to make the new insulating oil usable and popular, it is necessary to determine its gas production law under different overheating faults, so as to monitor and diagnose the working conditions of the equipment during use. However, the establishment of the three-ratio method requires a large amount of long-term data collecti...

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Problems solved by technology

[0003] At present, the existing insulating oil overheating fault simulation test is usually realized by a transformer with a common fault simulation function disclosed in the patent with the authorized announcement number CN202649350U. There are no temperature control components, high cost, and the disadvantages that research work cannot be carried out in small laboratories

However, in the laboratory to simulate the internal overheating fault test of the transformer, there is usually a defect that the gas production ratio of each gas deviates from the actual situation due to the increase in the internal pressure of the container; and the tube furnace and the corresponding stainless steel container must be in accordance with the special Specifications are customized, the cost is high; the heating temperature is not easy to control, and the temperature measurement error is large; the heating area is large, which is far from the local overheating situation in the actual process; Defects such as thermodynamic equilibrium will deviate

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