The monitoring of power quality using low-cost smart Web sensors (original) (raw)

Design and Implementation Of Low Cost Smart Web Sensors For Electric Power Quality Monitoring

The paper presents a low cost virtual instrument for monitoring the power quality events. The problem of power quality concerns the interferences which can be present in the mains. These electromagnetic disturbances can over a large interval of frequencies and can be present in industrial, domestic as well as commercial system .As main negative effects we can mention the high order harmonics, voltage fluctuations, flickers and disturbances with high slew-rates It is frequently indispensable to measure power quality indexes in wide electric power plant or in industrial zones. To this aim a low cost smart web sensors has been designed and implemented to acquire ,process and transmit data over 802.3 network .It is organized in multi micro controller system. The first one dedicated to the data acquisition and the other to data processing, dynamic HTML pages construction and TCP/IP stack management. Key features of realized devices are low cost, data processing and remote communication capabilities, the possibility to provide data with any internet browser.

REAL TIME WEB BASED MONITORING OF POWER QUALITY PARAMETERS

Power quality (PQ) monitoring has become an essential service provided by utilities to their industrial and large commercial customers. This paper presents the development of a web based PQ monitoring instrument which incorporates real time monitoring of PQ parameters. Special software and hardware are considered in the system design for sampling, processing and transmitting of the real-time PQ events over Ethernet. The system hardware is based on a microcontroller which is programmed to sample real time voltage and current data, process the data using the fast Fourier transform and transmit the results to an end user through the web server. Experimental results prove that the microcontroller based system give good performance for real time PQ monitoring through the web.

Wireless Sensor Network For Power Quality Monitoring According To IEC 61000-4-30

The paper proposes a distributed sensor network based on a wireless BlueTooth communication system or Power Quality (PQ) assessment in power systems. The architecture of the sensor node is described and characterized, together with the analysis of the measurement and communication procedure able to perform the PQ indices evaluation according the IEC 61000-4-30 norm. The necessity of online monitoring quantities spread on a wide geographical area have required the realization of intelligent measurement systems able to analyze and interpret large amounts of data into meaningful conclusions. The main element of these systems is a great quantity of low-cost, low-power,

A web-based distributed measurement system for electrical power quality assessment

Measurement, 2010

Industries' systems are shifting toward almost entirely sophisticated electronic devices. Power Quality (PQ) analysis is getting importance for the economy because this equipment is highly sensitive to PQ events. Control and supervision of an industrial process has mainly been focused on the electrical protection, and little attention has been paid to the quality of the electrical supplies. Nowadays, measurement and communications systems have advanced to enable the installation of web-based sensors within a PQ assessment scenario. In this sense, this paper presents an innovative low-cost measurement system, as well as investigates the challenges and trends in the development of distributed PQ measurement systems using smart sensors.

Application of smart sensors to the measurement of power quality

2008 IEEE Instrumentation and Measurement Technology Conference, 2008

Today's businesses depend heavily on electrical services for lighting, general power, computer hardware and communications hardware. With the generalized use of sophisticated electronic devices, industries are shifting toward almost entirely electronic IT systems. PQ events are of increasing concern for the economy because today's equipment, particularly computers and automated manufacturing devices, is highly sensitive to such imperfections. Traditionally the control and supervision of a plant distribution network has mainly been focused on the protection of the network. Relatively little attention has been focused on the quality of the electrical energy. Metering technologies and communications systems have advanced to enable the development of web-based sensors. Power Quality is one area where these smart sensors can be very valuable. This paper investigates the challenges and possibilities in the development of distributed PQ measurement systems. This paper describes the challenges and lessons learned from this work.

Wireless Sensor Network For Power Quality Monitoring According To IEC

The paper proposes a distributed sensor network based on a wireless BlueTooth communication system or Power Quality (PQ) assessment in power systems. The architecture of the sensor node is described and characterized, together with the analysis of the measurement and communication procedure able to perform the PQ indices evaluation according the IEC 61000-4-30 norm.

Power quality and metering monitoring applications for smart network operations

2013

Romanian TSO/DSO performed the necessary steps to implemented a nationwide Power Quality Monitoring System(PQMS) / Metering Monitoring System(MMS). First results encouraged us to consider grid extended PQMS and MMS as emerging data provides for the development of smart grids technology. The first part of the paper provides a description of the Power Quality(PQ) and Metering Romanian regulations. The second part presents the new PQMS hardware, software architecture and the most important results. The third part presents in particular the concepts and application aspects of effective power monitoring tools that are being used to visualize and analyse the power network of Romania. The final part contains conclusions and recommendations for future development.

Smart sensor network for power quality monitoring in electrical installations

Measurement, 2017

Smart meters are one of the basic components of the future smart grid, they allow remotely monitoring each point in the grid in order to know in real-time the performance of the system and to detect potential failures. In this paper, a smart sensor network is introduced and the most important features are presented in three different scenarios: a residential home, an industrial installation, and a public building. The proposed system demonstrates its capabilities of in situ real-time processing and big-data off-line network processing. The suggested smart meter is based on field programmable gate array (FPGA) technology that allows a reconfigurable architecture, which lets the user to select the proper processing modules according to their application. The developed smart sensor network calculates standard figures such as effective values, power factor, and total harmonic distortion; in addition, it detects power quality disturbances such as dips, swells, or interruptions. Moreover, the smart sensor network can continuously detect events to identify certain kind of appliances or industrial equipment such as: fans, lighting, microwave ovens, refrigerators, among others; it is a powerful tool to analyze an entire building in a non-intrusive load monitoring approach.

Wireless monitoring and management of energy consumption and power quality events

World Congress on Engineering, 2015

This paper describes the design, implementation and testing of a distributed wireless system conceived for residential consumers which allows remote monitoring of energy consumption and power quality events from multiple electrical appliances. The system can be operated by the user from a central computer, which receives the collected data from a wireless sensor network based on the IEEE 802.15.4 and ZigBee standards. The development of the system involved the design and implementation of the hardware of the wireless sensor nodes; the software embedded in the network nodes, which manages the acquisition and transmission of data from the sensor nodes to the computer; as well as the user interface software in the central computer. Performance tests show that the developed prototype is able to provide measurements with very good accuracy and precision, for both voltage and current.

Low-cost digital system for power quality monitoring

2003

This paper describes the development of a low-cost digital system used for power quality monitoring and power management. The system uses voltage and current Hall sensors, a standard data acquisition board, and has its processing system based in LabVIEW™, running on a regular PC. The system acquires data continuously, and storage in files the events that result from the anomalies detected in the monitored power system. Several parameters related to power quality can be analysed through 6 different applications: "Scope and THD", "Strip Chart", "Wave Shape", "Sags and Swells", "Classical Values" and "p-q Theory Values". The acquired information can be visualized in tables and/or in charts. It is also possible to generate reports in HTML format. In this format, the reports can be sent directly to a printer, can be embedded in other software applications, or can be accessed through the Internet, using a web browser. It is also shown the potential of the developed system, namely the advantages of virtual instrumentation, regarding to flexibility, cost and performance in the scope of power quality monitoring and power management (after acquisition, processing and analysing of the information, data and warnings can be sent through Internet or wireless technology).