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

Abstract

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.

Communication Network Standards for Smart Grid Infrastructures

“…A basic condition for meeting the above requirements is the deployment of a telecommunication protocol that can support broadband communications services. In addition, it is also necessary to have an extensive network of sensors, such as the phasor measurement units (PMU) [19][20][21][22], which can be implemented in various topologies and use different data and protocol formats [23,24]. However, IEC 61850 [14] is the only internationally recognized standard used to exchange high-, medium-, and low-voltage metering data with support for broadband TCP/IP connections.…”

“…This directly suggests that they must also support all communication technologies, given the different geographical conditions and infrastructures encountered. Furthermore, the implementation of protection systems should meet the individual specifications of distributed generation systems and, more generally, the automation of the European distribution system and consider the developments in the technological specifications of micro-networks [14,23,44].…”

Communication Networks Standards for Smart Grid Infrastructures

“…A basic condition for meeting the above requirements is the deployment of a telecommunication protocol that can support broadband communications services. In addition, it is also necessary to have an extensive network of sensors, such as the Phasor Measurement Units (PMU) [19]- [22] , which can be implemented in various topologies and use different data and protocol formats [23], [24]. However, IEC 61850 [14] is the only internationally recognized standard used to exchange high, medium and low voltage metering data with support for broadband TCP/IP connections.…”

A Flexible Supraharmonic Group Method Based on Switching Frequency Identification

“…The switching frequency of power electronic devices continues to increase with the development of power electronic devices, thereby leading harmonic injection to extend to high frequencies. High-frequency harmonics can cause electrical device malfunction or damage [1]- [3], power-line data transformer errors [4], [5], and power-metering errors which have resulted in the rapid development of a new power-quality issue [6], [7]. In 2013, the 2-150kHz highfrequency component of the power system is first defined as supraharmonic [8].…”