SF6 switch alarm and blocking signal wireless transmission device

Abstract

The invention discloses an SF6 switch alarm and blocking signal wireless transmission device which comprises an SF6 gas density meter, two pairs of SF6 switch low-pressure alarm contacts, two pairs of SF6 switch low-pressure blocking contacts and a power module, wherein one pair of SF6 switch low-pressure alarm contacts is connected with an alarm device, and the other pair of SF6 switch low-pressure alarm contacts is connected with a remote communication acquisition module; one pair of SF6 switch low-pressure blocking contacts is connected with an intermediate relay, and the other pair of SF6 switch low-pressure blocking contacts is connected with the remote communication acquisition module; the remote communication acquisition module is connected with a wireless communication module; the wireless communication module is connected with a system master station server. The SF6 switch alarm and blocking signal wireless transmission device has the remarkable advantages of simple communication way, low investment, rapid effect taking and the like, and the construction investment is saved; compared with the prior art, the device has the advantages that in the aspects of the communication network structure, channel maintenance and the like, the input of manpower and material resources can be greatly reduced, the labor productivity of total workers can be increased, and the automation level of a power switch device is improved.

Description

technical field [0001] The invention relates to a signal wireless transmission device, in particular to a SF 6 Wireless transmission device for low air pressure alarm and blocking signal of the switch. Background technique [0002] In the field of power transmission technology, SF is usually used 6 Switch, it has the advantages of long life and strong breaking force, its most prominent advantage is that it is easy to realize the breaking of three working positions (on, off and grounding) and small current (inductance, capacitance), and the ability to resist harsh environmental conditions Strong, suitable for popularization and application in urban and rural medium voltage distribution networks. SF 6 The switch is a switching device with a simple arc extinguishing device, using SF 6 Gas is used as insulation and arc extinguishing medium, it can be used for closing and breaking load current and overload current, and can also close and break no-load lines, no-load transform...

AI Technical Summary

Problems solved by technology

[0003] Like other switch-disconnectors, the SF 6 During the use of the switch, in order to ensure the safety and stability of the use, a special monitoring and alarm system is also required. The traditional SF 6 The switch monitoring and alarm system is mainly composed of three parts: transmitter, system host, and peripheral equipment. When monitoring and alarming, it is necessary to lay optical fiber or power carrier line for long-distance signal transmission. Therefore, SF 6 The switch monitoring and alarm system is often limited by the construction period of the optical fiber, power carrier and other networks, the investment is large, the maintenance of communication channels is difficult, and it is easily damaged by external forces. Therefore, regular patrols are required. However, due to the large number of equipment, it is difficult to achieve regular patrols. maintenance requirements, resulting in SF 6 When the switch has a low air pressure failure, it is difficult to detect it in time and take corresponding maintenance measures, so its use has a greater safety hazard

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