Vehicle-mounted megger and dielectric loss forward and reverse connection measuring and wiring centralized conversion device

Abstract

The invention discloses a vehicle-mounted megger and dielectric loss forward and reverse connection measuring and wiring centralized conversion device.The device comprises a high-voltage signal conversion module and a high-low signal conversion module which are connected; the high-voltage signal conversion module is used for realizing conversion between a high-voltage signal of a dielectric loss tester and a high-voltage signal of a megger, the high-voltage signal conversion module leads the high-voltage signal to the high-low signal conversion module, and the high-low signal conversion module is used for realizing conversion between the high-voltage signal and a dielectric loss forward connection signal.Through the device, intelligent measurement of one-time wiring of a sleeve body dielectric loss (forward connection method), a sleeve end screen reverse connection dielectric loss (end screen ground dielectric loss) and sleeve end screen ground insulation resistance can be realized, preceding-stage intelligent switchover is provided for one-time wiring of a whole transformer, it is feasible to shorten work time and reduce the work danger coefficient in an actual transformer debugging test, work efficiency is improved, meanwhile, power-failure overhaul time of the transformer is shortened, and economic efficiency of the transformer is improved.

Description

technical field [0001] The invention relates to a wiring centralized conversion device, in particular to a vehicle-mounted megohmmeter, dielectric loss positive connection, dielectric loss reverse connection measurement wiring centralized conversion device. Background technique [0002] At present, conventional high-voltage test electric power comprehensive test vehicles are generally equipped with insulation resistance testers (megohmmeters) and frequency conversion anti-interference dielectric loss testers. The test lines and test principles of these two testers are completely different, and the conventional items for the insulation resistance and dielectric loss test of transformer bushings are: bushing body dielectric loss (positive connection method, bushing end screen dielectric loss (reverse) Connection method) and the insulation resistance of the end screen. These items need to be short-circuited to the corresponding winding side at the upper end of the transformer b...

AI Technical Summary

Problems solved by technology

These items need to be short-circuited to the corresponding winding side at the upper end of the transformer bushing, and then tested from the pressure test. The voltage level continues to increase. The height of the transformer bushing is getting higher and higher, and the number of climbing times is high. There is a high probability of potential safety hazards. In addition, multiple wiring wastes time. The waiting time at the test site is long, prolonging the power outage time of the substation, causing manpower, waste of resources

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