Saturated reactor insulation accelerated aging test device and test method

Abstract

The invention discloses a saturated reactor insulation accelerated aging test device and a test method belonging to insulation material aging evaluation test technology. The saturated reactor insulation accelerated aging test device is built, and the aging condition of novel saturated reactor insulation in practical operation is simulated. By designing and manufacturing a model test object, change of discharging phenomenological parameters and dielectric, physical and chemical properties of novel saturated reactor insulation material epoxy resin including local discharging characteristic quantities, broadband dielectric loss frequency spectrums and Fourier transform infrared spectrums before and after accelerated aging test is tested and analyzed, and the aging state is evaluated. The method can be an important detection means for performing delivery test on a novel saturated reactor by manufacturers and evaluating the aging state of the saturated reactor by electric power companies, the aging state of the saturated reactor is accurately evaluated, the overall running state of an ultrahigh voltage direct current power transmission system is further evaluated, and the method has important significance for improving reliability of a cross-regional high-capacity strong large power grid, reducing running and maintaining cost and the like.

Description

technical field [0001] The invention belongs to the technical field of insulation material aging evaluation tests, and in particular relates to a saturable reactor insulation accelerated aging test device and a test method. Background technique [0002] With the development of UHV / EHVDC transmission technology, it has been widely used in long-distance high-power transmission, cable transmission and asynchronous communication of AC systems. The HVDC transmission system, including DC converter valves, DC voltage converters and saturable reactors, not only constitutes the main body of the modern new DC transmission system, but also causes the source of DC transmission system accidents and large-scale power outage accidents. Unlike power equipment operating at a conventional power frequency of 50Hz, when a saturable reactor is in normal operation, the damage to the insulation mainly comes from the electrical stress of the high-voltage pulse voltage it bears. According to releva...

AI Technical Summary

Problems solved by technology

However, the research on the evaluation of the aging state of epoxy resin materials under the operating environment of the saturated reactor was carried out relatively late in the industry, and there is no aging test and detection technology and corresponding equipment that can be widely used in engineering and industrial use.

Due to the above reasons, the data and test standards for the research on the aging state of epoxy resin under the condition of the new saturated reactor with high-frequency pulses are less accumulated, and there is a lack of relevant and operable test methods.

Images