A kind of mechanical interlocking system of double power switch of distribution network ring network cabinet

Abstract

A dual power switch mechanical interlocking system of a ring main unit of a power distribution network comprises the ring main unit and a power supply interlocking device installed in a mechanism bin of the ring main unit. A left interlocking mechanism and a right interlocking mechanism in the power supply interlocking device are driven by a left spindle and a right spindle of a switch operating mechanism respectively, and a link assembly is arranged between the left interlocking mechanism and the right interlocking mechanism. When one of a left baffle mechanism and a right baffle mechanism is opened, the interlocking mechanism on the other side is driven by the link assembly to move so as to limit opening of the other baffle mechanism. The mechanical interlocking system is simple in structure, convenient to operate and capable of achieving the switching function in cooperation with a power-driven mechanism of a switch, preventing two paths of power supplies from supplying power at the same time and adapting to the automation requirement of the power network.

Description

technical field [0001] The invention relates to a control device for electrical equipment, in particular to a mechanical interlocking system for double power switches of a distribution network ring network cabinet. Background technique [0002] The dual power switching device is used in special power supply and distribution occasions. It usually consists of two three-position load switches used to control the common and standby power sources respectively, the operating mechanism of the load switch and the utility model between the two mechanisms. It is composed of an interlock device to prevent two power supplies from supplying power at the same time. When the common power supply is generally the commercial power supply and stops working due to failures such as power outages or undervoltages, the power supply from the common power supply is completed manually or electrically within the specified time. Switching to backup power; and vice versa. Due to the particularity of th...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art, such as easy misoperation and hidden dangers of failure in simple electrical interlocking, and provide a mechanical interlocking system for double power switches of distribution network ring main unit. The system structure Simple, easy to operate, can cooperate with the electric mechanism of the switch to realize the switching function, prevent two power sources from supplying power at the same time, and meet the requirements of power grid automation

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