A gis knife switch position monitoring system

Abstract

A GIS knife switch position monitoring system, related to the technical field of electric equipment, comprising: an indicating pointer, an indicating rod, an indicating plate, a detection mechanism and a processor; the indicating plate is sleeved on the GIS knife switch transmission rod and does not rotate with it, indicating The pointer and the indicator rod are set opposite to each other and are installed on the front end of the GIS knife switch transmission rod and rotate with it. The indicator pointer and the indicator rod are located in front of the indicator plate. The corresponding switch positions on the indicator plate are equipped with detection mechanisms for detecting the indicator rod. And indicate whether the pointer rotates to the switch position and transmit the detection information to the processor. The monitoring system is simple, convenient, flexible and practical. It can accurately judge the position of the monitoring GIS knife switch by using the double judgment of the detection mechanism and the mechanical pointer, improve the judgment accuracy, reduce the pressure on the operating personnel, ensure the safe operation of the unit, and avoid electrical accidents.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a GIS knife switch position monitoring system. Background technique [0002] With the continuous development of electric power construction, GIS equipment has been widely popularized and applied in power plants because of its advantages of small footprint, high operational reliability, convenient maintenance and maintenance, and long maintenance cycle. The moving and static contacts are encapsulated in the equipment filled with SF6 gas, and the actual position of the knife gate contact cannot be seen intuitively. The actual position of the knife gate contact can only be indirectly judged by the external operating mechanism and the position change of the connecting rod. The opening and closing signs of the operation box can only indicate that the operation mechanism is in place. When the connecting rod falls off, the gap becomes larger, the aging corrosion, the jammin...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of electric power construction, GIS equipment is widely used in power plants because of its small footprint, high operational reliability, convenient maintenance, and long maintenance cycle. However, GIS knife switch equipment is mainly Encapsulating the dynamic and static contacts in the equipment filled with SF6 gas, the actual position of the knife switch contact cannot be seen intuitively, and the actual position of the knife switch contact can only be judged indirectly through the external operating mechanism and the position change of the connecting rod. The opening and closing indicator of the operation box can only indicate the operation of the operating mechanism. When the connecting rod falls off, the gap becomes larger, aging, corrosion, jamming and other problems cause the three phases to be inconsistent, the indicator of the knife switch operating mechanism and the background cannot be judged in time , Determining and discovering faults, the key work of judging the actual position of the knife switch falls on the inspection and operation experience of the operating personnel, which brings hidden dangers to the safe operation of the power plant

[0003] In recent years, the power system has reported that the three-phase linkage connecting rod of the GIS knife switch has fallen off, resulting in non-full-phase operation of the generator and the incomplete three-phase separation of the ground knife during power transmission. Combined with the current electrical switching operation, the status of the GIS knife switch is mainly Rely on the operator's electrical alignment, mechanical alignment, and background monitoring alignment, but the operation of the GIS knife switch is performed by the operating mechanism box, and the transmission rod of the operating mechanism box drives the three-connected rods to link the three-phase knife switch. Phase linkage, the operation box displays the switching state, which cannot effectively display the switching state of the three-phase knife switch. In order to avoid the three-phase connecting rod connection mechanism from slipping, bolts falling off, and the transmission gap increasing, resulting in inconsistent actions of the three-phase knife switch, Operators need to judge the position of the three-phase knife switch by marking the actual axis of each phase knife switch with "open and close" indications, marking lines, etc. Due to different standing positions, viewing angles, and experience, the judgment results are also different, and there is a possibility of misjudgment Sexuality, which brings hidden dangers to safe operation

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