Gravity-based opening-closing in-place monitoring system of high-voltage switch type device

Abstract

The invention discloses a gravity-based opening-closing in-place monitoring system of a high-voltage switch type device. The system comprises a monitoring host and position detectors that are arranged on operation rods of all switch type devices of a transformer substation and are used for detecting whether the opening and closing are carried out in place. Each position detector includes a hollow base plate; a hollow circular ring is arranged on the upper surface of the base plate; a gravity moving body that can move freely is arranged in the inner cavity of the hollow circular ring; two sensors are arranged in the inner cavity of the hollow base plate, wherein the two sensors correspond to the circular ring and are connected with the monitoring host; and the two sensors sense the position change of the gravity moving body in the inner cavity of the hollow circular ring and transmit the collected signals to the monitoring host, thereby determining whether the operation rod rotating shafts of the high-voltage switch type devices rotate in place. With the monitoring system, whether the opening and closing of the switch type device are carried out in place can be monitored precisely in real time and thus operation faults that a phenomenon that the opening and closing are not carried out in place can not be found timely and the like can be avoided.

Description

technical field [0001] The invention relates to a gravity-based high-voltage switch equipment opening and closing position monitoring system. Background technique [0002] With the development of society and economy, people have higher and higher requirements for power quality, and the number of substations and their equipment has increased accordingly. Among them, circuit breakers, disconnectors and other switching equipment account for the majority of them, and their opening and closing operations are successful. The rate affects the normal operation of the power grid system, and even affects the personal safety of operators and inspection personnel. Therefore, it is necessary to confirm the opening and closing status to avoid safety accidents caused by improper operation. This also requires power providers to better monitor the power supply network and equipment. At present, there are mainly three ways to identify the opening and closing position indication of switches: ...

AI Technical Summary

Problems solved by technology

[0003] 1. On-site manual inspection means that the substation staff go to the site to identify, the work efficiency is low, and the operation status of the equipment cannot be grasped in real time

The operation time of the equipment is increased, which greatly restricts the development of remote intelligent control of substations

Moreover, the method of manual on-site observation is time-consuming, laborious, inefficient, and susceptible to the subjective influence of observers.

[0004] 2. Electric quantity monitoring cannot effectively reflect the opening and closing status of the isolating switch

[0005] 3. Based on the auxiliary contact detection, since the auxiliary contact is multiple-transferred by the operating rod, the deformation of the operating rod may cause the position to cause a position error. Moreover, the accuracy of this monitoring method is not high. Once the equipment is not operated properly and the When the auxiliary contact is switched in place, it will lead to misjudgment of the opening and closing position

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