Real-Time Low Voltage Network Monitoring—ICT Architecture and Field Test Experience (original) (raw)

Low-voltage electricity network monitoring system: Design and production experience

International Journal of Distributed Sensor Networks

This article describes the low-voltage distribution network monitoring system developed for the Electric Power Industry of Serbia electricity distribution company. The implemented system is deployed in two different regional centers of the Electric Power Industry of Serbia and is being used in production for the past 4 years. During this period, it has collected real-life data which was used to analyze and investigate low-voltage distribution network performances as well as to identify and study energy losses in low-voltage distribution networks. The main contribution of this article is represented by the real-life monitoring and control infrastructure implementation insights. Furthermore, the system we describe in this article became a part of company’s enterprise information system, thus becoming integrated with heterogeneous information sources. This integration generated additional values to the company since the collected measurements started to improve the quality of the decis...

Monitoring and analysis of low-voltage network with smart grid architecture model by developing use cases

International Journal on Smart Sensing and Intelligent Systems

The objective of this paper is to show the characteristics of smart meters enabling to monitor and analyze the low-voltage (LV) network. This is achieved by developing use cases, where power quality and outage data are transferred from smart meters through distribution network to the control center. To visualize the monitoring process of LV network, the use cases are mapped into smart grid architecture model. The paper proposes a solution to analyze the LV network interruption and power quality problems (over-voltage, under-voltage, voltage sags, and swells). Thus, this paper provides a smart platform for monitoring LV network.

Lessons learnt from real-time monitoring of the low voltage distribution network

Sustainable Energy, Grids and Networks, 2017

Up to now, the evolution of the distribution network toward the smart grid model has been essentially focused on two non-intersecting areas: medium voltage network automation and smart metering. The former one is mainly focused on improving the quality of service, studying and deploying fault location, isolation and service restoration systems, while the latter has been addressed to improve the customer relationship management, promote the customer awareness and enable new smart home services. In most cases a deep investigation of the low voltage network has been left disregarded, even if it represents the asset bridging the medium voltage level up to final customers. This network segment is probably the most affected by regulatory actions promoting intermittent renewable generations, distributed storage, heat pumps and the growing diffusion of electric vehicles utilization. The paper describes a field demonstrator of the FP7 European project IDE4L, where an extensive analysis of the low voltage network has been performed by means of an innovative use of smart meters and the installation of sensors on the medium-tolow voltage substation. Index Terms-smart grid, low voltage network, smart metering, distributed measurement system. I. INTRODUCTION HE transition towards smart grids has gradually taken place in several areas of Distribution Networks (DNs). Solutions and systems already applied in transmission networks have been progressively integrated at the Medium Voltage (MV) level of DNs, scaled-down in terms of features and costs to meet their requirements. A typical example of such evolution is represented by the increase in monitoring and control technologies for MV level applications [1]. Fault Location, Isolation and Service Restoration (FLISR) technologies are one of those that have gained sustained attention in the past few years. FLISR solutions have been investigated from both a theoretical and practical viewpoint and they are now at a deployment stage [2], [3].

Distribution voltage monitoring and control utilising smart meters

CIRED - Open Access Proceedings Journal, 2017

The conventional distribution voltage control system does not monitor and control wide area of low voltage (LV). In the case that LV near the end of the distribution line is deeply dropped due to heavy load, there is the potential that LV surpasses the upper or lower limit of distribution voltage. To regulate LV within the limits, the voltage control is required to improve its performance. On the other hand, smart meter, a device that reports the voltage and energy consumption at each customer, is installed in various regions. To regulate LV within the voltage limits, the control which utilises LV measured by smart meters is proposed in this study. As a problem about the proposed control, the control requires to select meters for monitoring and controlling the voltages in all LV networks. Therefore, the selection method of smart meters and voltage control utilising smart meters is studied, and the performance of the voltage control is evaluated.

A Survey of Communication Technologies for the Low Voltage Distribution Segment in a Smart Grid

This paper presents a survey of technologies for data transmission in an electricity distribution network between the controllers at the electrical secondary substations and the home equipment. The selected technologies can be used for implementation of advanced monitoring and control functionalities in the Low Voltage (LV) network of the electricity distribution system within the smart grid paradigm.

Intelligent monitoring of power networks – system architecture and communication network infrastructure

2013

The paper presents the system architecture and communication network infrastructure of the Intelligent Monitoring of POwer NETworks (IMPONET) project. The main objectives of the project were development of a communication platform for handling network devices with bidirectional communication and real-time management of the energy data together with new services to control the quality of electric signals. The IMPONET platform was validated through acquisition and processing of the energy-data experimental scenarios. The obtained results show that the proposed platform is capable of real-time data exchange and raw-energy data processing from multiple data concentrator devices and smart metering devices.

Monitoring system for the local distributed generation infrastructures of the smart grid

IET Conference Publications, 2013

Distributed generation infrastructures based on renewable energies represent a key piece of the Smart Grid puzzle. However, such infrastructures increase dramatically the variability and randomness of energy generation, thus increasing the complexity of the grid management. Therefore, they need to be carefully monitored in order to properly integrate them into the electrical grid. This paper presents the novel monitoring system for distributed generation infrastructures integrated into the M2M-based platform for energy efficiency in energy-positive neighbourhoods which is being developed under the European project ENERsip. The paper describes the overall architecture of such monitoring system, as well as the developed pieces of hardware and software. In addition, the validation of the system is also outlined.

Online Monitoring Leads to Improve the Reliability and Sustainability of Power Grids

2019

The paper aims to address the concept of virtualized grid automation. This approach will be developed within a project by combining the application of data visualization techniques, sensor analysis tools, advanced energy measurement and ICT technologies to ensure the visibility and control of electricity grids. The development of advanced distributed processing solutions will solve time-critical issues.CEZ Romania wants to monitor online the distribution system for optimization of the grid operation at medium voltage (MV) and low voltage (LV). CEZ wants to have data from networks in real-timeand to be able to remotely optimize the operations. A set of advanced sensors will be deployed in the networks, connected using available communications networks to the service server located at the DSO premises. Appropriate control room displays will be connected to the services to display the results of the data analysis.We decided to start with an area with a high density of consumers, especi...

The role of smart sensor networks for voltage monitoring in smart grids

2011

The large-scale deployment of the Smart Grid paradigm will support the evolution of conventional electrical power systems toward active, flexible and self-healing web energy networks composed of distributed and cooperative energy resources. In a Smart Grid platform, distributed voltage monitoring is one of the main issues to address. In this field, the application of traditional hierarchical monitoring paradigms has some disadvantages that could hinder their application in Smart Grids where the constant growth of grid complexity and the need for massive pervasion of Distribution Generation Systems (DGS) require more scalable, more flexible control and regulation paradigms. To try to overcome these challenges, this paper proposes the concept of a decentralized non-hierarchal voltage monitoring architecture based on intelligent and cooperative smart entities. These devices employ traditional sensors to acquire local bus variables and mutually coupled oscillators to assess the main var...

ADMS4LV – advanced distribution management system for active management of LV grids

CIRED - Open Access Proceedings Journal

This study describes the main developments of the advanced distribution management system for active management of low-voltage (ADMS4LV) Grids project-. ADMS4LV is a R&D project that targets the development and demonstration of a system with adequate tools to monitor, control and manage the LV networks with the objective of an effective implementation of smart grids (SG). The main architecture of ADMS4LV is detailed, and the main functionalities of its modules are described. The adequacy of ADMS4LV is validated using a large-scale demonstrator that is based on a typical Portuguese LV network, where there are already present some of the features of an SG, namely an advanced metering infrastructure and distributed energy resources. This project gathers partners with different profiles such as the Portuguese DSO (EDP-D) and one of the major R&D institutes in the area of energy (INESC-TEC).