Short circuit and grounding fault simulation device

Abstract

The invention discloses a short circuit and grounding fault simulation device, which comprises a shell with accommodating space. The shell also comprises a front panel for adjustment and a rear panelfor wiring; the accommodating space is internally provided with a processing unit capable of simulating happening of a fault; the processing unit also comprises coolers, a partition board and a motherboard; the coolers are arranged in placement space formed by epoxy boards; the partition board partitions adjacent coolers; and the motherboard is arranged on a support. Inter-phase short circuit andgrounding faults of a small current grounding system of a distribution network are mainly simulated, a physical process and a phenomenon of the original system can be reflected more intuitively, a physical dynamic mode can be adopted to more intuitively and effectively study the fault characteristics of the small current grounding system, a grounding mode can be adjusted flexibly, and through local switch operation or remote protocol remote control, an ungrounded system can be conveniently constructed.

Description

technical field [0001] The invention relates to the technical field of fault control equipment, in particular to a device for simulating short-circuit and ground faults. Background technique [0002] In the actual distribution network, due to the requirement of safe and stable operation, it is generally difficult to conduct fault experiments to study the performance of protection equipment. Building a power supply line of a simulated distribution network for fault simulation experiments is an effective way to conduct distribution network protection research and protection equipment testing. . [0003] The faults of the distribution network are random and uncontrollable. Therefore, the research on the protection of the distribution network often requires a large number of researches on different types of faults in different locations to better grasp the fault characteristics of the distribution network. Important parameters, the impact of different fault phase angles on elec...

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Problems solved by technology

[0003] The faults of the distribution network are random and uncontrollable. Therefore, the research on the protection of the distribution network often requires a large number of researches on different types of faults in different locations to better grasp the fault characteristics of the distribution network. Important parameters, the impact of different fault phase angles on electrical equipment is different, but because it is difficult to simulate distribution network faults under different fault phase angles, the existing research on distribution network fault simulation is all in the future Considering the fault phase angle, it leads to some defects in the research of distribution network protection and the test of protection equipment; on the other hand, short circuit, open circuit and ground fault are common faults in distribution network. In the fault simulation experiment The simulation of these faults is essential, and for ground faults, different grounding positions will cause different types of ground faults, among which arc ground faults are more serious faults, the design can integrate multiple faults into one, and according to the needs in the design It is difficult to simulate the corresponding fault devices under a certain fault phase angle

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