Power quality monitoring systems for smart grid networks (original) (raw)

Integrated Power Quality Monitoring Systems in smart distribution grids

2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012

The smart distribution grids will have to supply the electricity according to power quality standards. Various measurement instruments, currently considered as cornerstones of smart grids (smart meters, protection relays, fault recorders etc.), do not measure all the power quality parameters specified in these standards. Some distribution system operators are already installing Power Quality Monitoring Systems (PQMS), based on fixed power quality monitors. The aim of this paper is to present the possibility of integrating power quality data from PQMS system, AMR/AMI (Automatic Meter Reading/Advanced Metering Infrastructure) system and all the other systems in the distribution network, into an Integrated Power Quality Monitoring System (IPQMS). The results of pilot projects conducted in the Public Electric Utility Elektroprivreda of Bosnia and Herzegovina, in order to test the three power quality monitoring systems, are also presented. The possibility of using data from smart meters in power quality monitoring was analysed.

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.

Integrated power quality monitoring system and the benefits of integrating smart meters

2013 International Conference-Workshop Compatibility And Power Electronics, 2013

Because of the regulatory requirements for the quality of electricity supply being imposed in many countries, power quality is ought to be an important aspect of smart distribution grids. In this context, there is a need for the Integrated Power Quality Monitoring System, which would integrate all the power quality data available from various systems of smart distribution grid, such as Power Quality Monitoring System, Automated Meter Reading/Advanced Metering Infrastructure, Supervisory Control and Data Acquisition, Electric Vehicle Management System etc. In this paper the power quality data management role of Integrated Power Quality Monitoring System is presented. Instead of accumulating all the historical data, the Integrated Power Quality Monitoring System should collect only data from the measurement devices in the affected area, needed for analysing the propagation and the source of the disturbances. The benefits and challenges of using smart meters for power quality monitoring are discussed in this paper in more detail. Also in this paper, the results of laboratory tests of power quality capability of a single smart meter are presented. The comparison of measurement between a power quality instrument and several smart meters for the example of one real medium voltage/low voltage network is presented, with the special focus on the distribution of voltage harmonics.

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.

Power quality disturbances on smart grids: Overview and grid measurement configurations

2017 52nd International Universities Power Engineering Conference (UPEC), 2017

Smart electrical grids today are increasingly integrating new technologies such as electric vehicles, smart metering, and demand side management. They aim to promote the use of renewable energy sources and better energy saving. The ever growing presence of power electronics interfaces, for example photovoltaic panels, batteries, or direct current loads in the power system makes it more vulnerable to power quality issues. The paper aims to create an overview of the existing power quality disturbances in traditional as well as smart grids. The other main objective of the paper is to discuss the techniques to measure and detect supraharmonic emissions in smart grids. The paper also describes the measurement parameters and configurations in smart grid platform in order to analyse the dynamic conditions. This platform is an advanced test facility designed and developed to facilitate the transition from traditional to smart grids. The paper studies the existing power quality disturbances and identified supraharmonic emissions as field of interest. It also presents the design and initial tests conducted on a measurement system for supraharmonics. The parameters and configurations to be performed during the measurements in the smart grid platform are also discussed.

Research Laboratory for Monitoring and Analysis of Power Quality in Power Distribution Grids

2017

INCESA, the University of Craiova’s project financed through European grants, has already initiated large projects on topics such as smart grids, energy storage, transmission and distribution system, renewable energy. The research projects on these topics are conducted specifically in the framework of the INCESA s Smart Grids Research Laboratory (SGRL). The aim of this paper is to introduce the infrastructure of SGRL and the operational characteristics and monitoring facilities of its units. The results of a study case are also presented in order to demonstrate the capabilities of the hardware and software laboratory infrastructure suitable for comprehensive power quality assessments personalized for industry applications (power distribution grids facilities).

Upgrading smart meters as key components of Integated Power Quality Monitoring System

Power quality is one of the important challenges for the smart distribution grids. It is not possible to know the state of power quality in the network without appropriate measurements or monitoring. As an answer to need for power quality monitoring in smart distribution grids, this paper further develops the Integrated Power Quality Monitoring System (IPQMS). IPQMS integrates power quality data from all the measurement devices available in the smart distribution grids: power quality monitors, portable power quality analyzers, smart meters, protection relays, fault locators etc. Smart meters are the key sensors in smart distribution grids and should be used as indicators of power quality disturbances in IPQMS. The complementary use of power quality monitors and smart meters in IPQMS should enable the analysis of the propagation of power quality disturbances throughout the distribution network. Current state-of-the-art smart meters have certain capabilities regarding the monitoring of some power quality parameters. The necessary upgrades to the state-of-the-art smart meters regarding their power quality monitoring capabilities are discussed in this paper in the context of their role in IPQMS. This paper elaborates in detail one new concept of operation and process algorithms for IPQMS, with special emphasis on smart meters. This paper also presents experimental results of integrated power quality monitoring using power quality monitors, state-of-the-art smart meters and protection relays. The presented experimental results prove that with integrated power quality monitoring, distribution system operators can get a complete information about power quality in their networks.

Title Power quality aspects of smart grids

2010

This paper gives an overview of the smart grids developments, seen from a power-quality viewpoint; describes the main relations between smart grids and power qu ality, and goes into some detail for some of the aspects. Diff erent types of real and virtual energy storage are distinguished. Power-quality monitoring in the smart grid is discussed in detail . Further aspects discussed in the paper are: emission by new devices; interference between devices and power-line communi cation; allocation of emission limits; improving voltage qu ality; immunity of devices; and weakening of the transmiss ion grid. Although the smart grid brings many new power-quali ty challenges, these should not result in the introduc tion of unnecessary barriers against the introduction of ne w technology.

Power Quality aspects of Smart Grids

2010

Abstract. This paper gives an overview of the smart grids developments, seen from a power-quality viewpoint; describes the main relations between smart grids and power quality, and goes into some detail for some of the aspects. Different types of real and virtual energy storage are distinguished. Power-quality monitoring in the smart grid is discussed in detail. Further aspects discussed in the paper are: emission by new devices; interference between devices and power-line communication; allocation of emission limits; improving voltage quality; immunity of devices; and weakening of the transmission grid. Although the smart grid brings many new power-quality challenges, these should not result in the introduction of unnecessary barriers against the introduction of new technology.