Computerized power transformer monitoring based on internet of things

Abstract

Distributed transformers are imperative equipment in power networks. Due to large amount of transformers distributed over a widespread area in power electric systems, the data acquirement and condition monitoring is essential concern. In spite of security and automation in plants, industrial environment is relatively critical for machines and humans. This study deals with a safety in industrial condition. A model has been designed to detect dangerous situations like breakdown that is the most essential parameter for occurring leakage current in substation and gas leakage based on faults data source file from distinguished sources. Reached outcome will be executed in IoT (Internet of Things) gateway design, to augment technical implementation with scalability. It consists of Node-MCU, node red server, mosquito server that serves as negotiator amid Node-MCU and node red server and Thingspeak IoT platform. Data processing has been completed at Thingspeak IoT platform so that the monitored quantity can be displayed frequently or at scheduled intervals of time. These processed results have been statistically further analyzed using SPSS software package.

Long-Lifetime Event-Driven Wireless Monitoring System for Pole-Mounted Transformers

“…Figure 2a shows a simplified block diagram of a conventional wired monitoring system for large-scale power transformers. In the monitoring system of a power transformer, various physical quantities can be converted into electrical signals using sensors, such as PD, vibration, and ultrasound [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. When an electrical signal is fed to a signal conditioner through a wire, the signal conditioner manipulates the input to prepare it for the next stage, a high-speed DAQ.…”

“…Figure 3a shows a basic battery-powered wireless monitoring system in a noisy environment, with a band-pass filter (BPF) as a signal conditioner [19][20][21][22]25]. The BPF input v SN is defined as…”

“…However, skilled specialists need to be present on-site to analyze the performance, which eventually leads to higher operation and maintenance (O&M) costs [17]. Recently, battery-powered wireless real-time monitoring systems have been widely developed for monitoring pole-mounted power transformers at a lower cost and with a smaller size [18][19][20][21][22]. As the sampling rate required to acquire the physical quantities as raw data can be too high for low-cost devices, the raw signal from a sensor needs to be converted into a root mean square (RMS) value that quantifies the physical or electrical parameters of the input signal [14,23].…”

“…mounted power transformers at a lower cost and with a smaller size [18][19][20][21][22]. As the sampling rate required to acquire the physical quantities as raw data can be too high for lowcost devices, the raw signal from a sensor needs to be converted into a root mean square (RMS) value that quantifies the physical or electrical parameters of the input signal [14,23].…”

An Internet of Things (IoT) based Monitoring System for Oil-immersed Transformers

“…One of these technologies is the Internet of Things (IoT). This structure is based on the idea of collecting, analyzing, making decisions and managing the data of the environment in which the objects are located on a common platform [22,23]. ThingSpeak is an open IOT platform using for real-time monitoring of the data and the data accrued from the sensors can be monitored by means of a user-defined IP address and ThingSpeak API key [24].…”