Intelligent integrated low-voltage reactive power module and its control method based on Internet of Things

Abstract

The invention discloses an intelligent integrated low-voltage reactive module based on the Internet of Things and a control method thereof, including a low-voltage power capacitor, an intelligent controller, a GPRS / wireless network, a broadband wired network, a background monitoring server, and a smart phone. The capacitor includes an incoming line switch, a current transformer, a switching switch and a low-voltage power capacitor body. A temperature sensor is installed in the low-voltage power capacitor body. The intelligent controller includes a DSP digital signal processor, an Internet of Things wireless module, an AC / DC voltage A conversion module, a voltage sampling circuit, a current sampling circuit, a control output interface circuit and a temperature sampling circuit. The invention can realize real-time data collection, wireless data transmission, and can check capacitor working current, body temperature, harmonics and other related data at any time through the smart phone, and can find faulty capacitors in time.

Description

technical field [0001] The invention relates to a low-voltage reactive module and a control method thereof, in particular to an intelligent integrated low-voltage reactive module based on the Internet of Things and a control method thereof. Background technique [0002] The existing integrated low-voltage reactive power compensation modules are generally installed in a large number in the user's power distribution room. After a period of operation, especially when the capacitor fails or the capacity decays, the power distribution management personnel cannot timely understand the situation and go It may eventually lead to low distribution power factor, increased reactive power loss and fines due to insufficient reactive power compensation. Some capacitors are not put into operation or overcompensated for a long time due to low management level and insufficient attention to reactive power compensation. In the traditional field, power distribution management personnel need to ...

AI Technical Summary

Problems solved by technology

Even through wired network monitoring, although the monitoring of the on-site capacitor operation status can be realized, due to the need to lay a large number of power cables in the early stage of construction, the installation cost and management cost will increase significantly

Due to cost reasons, the traditional wired monitoring method is not easy to popularize especially in user distribution transformers

Operating temperature and harmonics are the main factors affecting the service life of capacitors. The traditional integrated low-voltage reactive power compensation module can measure the operating temperature, but it cannot measure the current harmonic content of the capacitor body, that is, it is not effective for current harmonics. protective effect

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