A state monitoring device for substation terminal box

Abstract

The invention provides a transformer substation terminal box state monitoring device. The device comprises a signal collection unit, a signal processing unit and a remote communication unit. The signal collection unit comprises a temperature and humidity measurement module, a current measurement module, a voltage measurement module and a stroke switch. The signal processing unit comprises a signal modulation module, a digital signal processor, a power supply module and an I / O interface. The remote communication unit comprises a serial port module and a GSM module. A second current transformer is arranged between a power supply module and the digital signal processor. The second current transformer is connected to the digital signal processor successively through the I / O interface and the signal modulation module. The transformer substation terminal box state monitoring device also comprises a second alarm. An upper computer is connected to the second alarm through an electronic switch. In the invention, a temperature, a humidity and a box door state in a transformer substation terminal box can be monitored and on-line monitoring of a transformer substation terminal box state is realized.

Description

technical field [0001] The invention relates to the field of substations, in particular to a state monitoring device for a substation terminal box. Background technique [0002] In a conventionally constructed substation, the outdoor electrical equipment mechanism box, that is, the terminal box, is the intermediate link between outdoor electrical equipment and indoor protection, measurement and control, and communication equipment, such as the main transformer terminal box, voltage / current transformer terminal box, and switch mechanism operation. It is generally installed on site, and is mainly responsible for connecting indoor non-electrical protection signals, communication and measurement and control devices with various outdoor electrical equipment, and plays a dual role of measurement and protection in the power system. Whether its operating status is good or not directly affects the safety of power system operation and the stability of power supply. [0003] It can be...

AI Technical Summary

Problems solved by technology

[0004] At present, the status monitoring devices for substation terminal boxes on the market are mainly used for supporting heating and dehumidification devices. They often use external mechanical dials to set the temperature and humidity thresholds. When the monitored environmental conditions exceed the limit, the heating and dehumidification devices are activated. It only has local monitoring function, does not have communication and remote alarm functions at the same time, and cannot monitor the state of the door of the terminal box and the temperature and humidity inside the terminal box at the same time

In addition, the alarms used in the prior art usually either do not easily attract the visual attention of relevant staff, or easily cause noise pollution.

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