Method for fusing primary main loop and secondary sensor of switch cabinet

Abstract

The invention relates to field of optimization of power equipment, and discloses a method for fusing a primary main loop and a secondary sensor of a switch cabinet. The method comprises the following steps: determining mounting positions of arc light sensors, temperature sensors, humidity sensors and heaters; mounting the arc light sensors at positions at which field intensity is maximum in a cable room according to an electric field simulation result; mounting the humidity sensors at upper positions of cabinet walls of the cable room and a circuit breaker room, and mounting the heaters at lower positions of the cabinet walls of the cable room and the circuit breaker room, wherein the lower positions are far away from the main loop and stick close to the cabinet walls, and the field intensity at the lower positions is relatively low; and mounting the temperature sensors at bus bridging positions and tulip contacts in a bus room. Power is taken from the primary loop, and a wireless temperature measuring manner is adopted. Signal ground is connected with the primary main loop, so that breakdown of equipment caused by local discharge is avoided. Signal wires of the sensors are shielded in a dual-layer isolation way, and an IEC-101 protocol is adopted in wire communication. The method has the advantages of simple principle, clear design and high system integrity, and safe running of distribution switchgears and power supply reliability of power grids can be effectively ensured.

Description

technical field [0001] The invention belongs to the field of power equipment optimization, and in particular relates to a primary main circuit and a secondary sensor fusion method of a switch cabinet. Background technique [0002] At present, the primary equipment and secondary equipment of the switchgear are relatively separated. Due to the need to develop smart grids, there will be no clear boundaries between primary and secondary electrical equipment. At the same time, it is also a development opportunity for the entire power distribution switch field. As the boundary between the primary and secondary equipment industries becomes less and less obvious, some functions of secondary equipment will be transferred to primary equipment and integrated into a more integrated intelligent unit. As a part of intelligence, the connection of sensors to the high-voltage equipment body needs to be fully considered in the design stage of high-voltage equipment. In addition, considerin...

AI Technical Summary

Problems solved by technology

However, in practical applications, the local position is affected by the field strength distribution during operation

At the same time, the integrated structure wireless temperature measuring device sensor provided by most suppliers (that is, the temperature sensing element, the transmitting device and the power supply module are integrated, and the battery should be replaced separately), and the battery is limited by the requirements of the use environment, and its high temperature environment prone to failure

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