Busbar voltage detecting system and fault diagnosis method based on wireless sensor network (WSN)

Abstract

The present invention discloses a busbar voltage detecting system and a fault diagnosis method based on a wireless sensor network (WSN). A plurality of busbar voltage detecting points are arranged in turn on each busbar trunk line; each MCU control circuit box is internally provided with a busbar A phase power picking device, a busbar zero phase power picking device and an MCU integrated circuit; each busbar voltage detecting point sends data to the least busbar voltage detecting point on the corresponding busbar trunk line through a corresponding node wireless module, and the last busbar voltage detecting points send all the data to an upper computer for processing through a terminal node device; and the upper computer calculates a voltage difference and a resistance changing value between two adjacent busbar voltage detecting points, compares the resistance changing value with a preset resistance changing value, and determines if faults exist within a busbar region between the two adjacent busbar voltage detecting points. The number of busbar voltage detecting devices can be effectively reduced, diagnosis of busbar fault regions is realized combining the WSN technology.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a bus voltage detection system and a fault diagnosis method. Background technique [0002] The bus bar has gradually become an important part of power transmission equipment. During the installation process of the bus bar, the reliability of the connection between its units will directly affect the safe operation of the entire power supply and distribution system, especially the resistance of the bus bar connector. Work efficiency and service life have a direct impact. The busbar joints are fixedly connected by bolts. If the bolts are not tightened, or if they are in the working state for a long time after tightening, the thermal expansion and contraction of the conductor will cause the creep of the conductor, which will loosen the bolts and increase the resistance of the joints at the connection. Conductive copper Exhaust heat and be oxidized. At this time, the current ...

AI Technical Summary

Problems solved by technology

However, this method needs to place a temperature detection device at each bus joint, so the number of detection devices required is relatively large, and the cost is also high; in addition, most of the bus joint detection devices are powered by batteries, which is easy to generate The phenomenon of not working properly caused by insufficient power supply voltage, so a large number of batteries need to be replaced regularly, which will also increase the cost

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