Search results for "Line Communication"
showing 10 items of 64 documents
Can online communication strengthen the relationship of EU with young citizens in Finland?
2010
Introduction: In the last five years the EU has increased its authority on various issues, as well as its visibility. Nevertheless, the impact that the European Union (EU) has had on the lives of citizens in its Member States is often underestimated, and support towards its institutions has declined in recent years, especially among young people. The Eurobarometer survey of December 2005 (EB, 2005) made clear that only 55 percent of European youth aged between twenty and twenty-four years old thinks that in five years’ time they would like the EU to play a more important role in their lives. The same study indicated that only 40 percent of youth feel that their voice is heard in the EU. If …
Critical issues and future prospects of the secondary substation in smart grid context
2014
This paper is focused on the new role of the secondary substation in the smart grids context. This innovative view has been proposed and developed in the framework of two Research Projects: NewCabELARC Project and Reipersei Project. The latter provides a concrete and comprehensive low cost solutions for the smart grid monitoring and control, allowing the real diffusion and integration of Distributed Generation and the full exploitation of Renewable Energy Sources. In this field, this paper shows how the secondary substation (SS) takes the role of smart transducer node where innovative devices can be located, collecting the measurement data coming from the field devices (power and energy met…
Marinin hallituksen ministereihin Twitterissä suunnattu vihapuhe
2022
Twitter on myös vihapuheenvälittäjä. Tämä tutkimus käyttää laajaa, käsin luokiteltua twiittiaineistoa Marinin hallituksen ministereihin kohdistuvan vihamielisen puheen tutkimisessa. Tutkimuksen tavoite oli selvittää, kuinka yleistä ministereihin kohdistuva vihapuhe on, ja miten vihapuhe jakautuu sukupuolen, iän ja puoluekannan mukaan. Tutkin myös vihapuheen lähettäjien seurattavia ja tykkäyksiä. Tulosten perusteella valtioneuvostoon kohdistuva vihapuhe on yleistä, koska keskimäärin noin joka 20. ministerille lähetetty viesti on vihamielinen. Salkkujakauma vaikuttaa oletettavasti vihapuheen jakaumaan eikä tuloksista sen vuoksi voida yleistää, onko vihapuhe suunnattu erityisesti naisiin tai m…
Caratterizzazione e modellizzazione di un sistema di comunicazione power line in media tensione
2011
Comportamento dei trasformatori MT/BT in sistemi di comunicazione power line. Caratterizzazione e modellizzazione
2012
“Coupling interfaces for communication transceivers over power lines”
2010
Coupling circuit for power line communications
2013
A coupling interface couples a transceiver to one or more capacitive voltage dividers of a power transmission system. The coupling interface includes a first signal path including an adjustable inductance configured to form a resonance circuit with a capacitance associated with the one or more capacitive voltage dividers. The coupling interface may include a second signal path including an adjustable inductance configured to form a resonance circuit with the capacitance associated with the one or more capacitive voltage dividers.
An Innovative Coupling Solution for Power Line Communication in MV Electrical Networks
2019
One of the main problems in the diffusion of power line communication (PLC) in medium voltage (MV) networks is the need of a dedicated PLC coupler to be installed all over the network. To avoid this problem, the authors have studied, prototyped and patented an innovative PLC coupling solution which uses electrical elements embedded in most of the switchgears already installed in MV networks, i.e. the capacitive dividers of the voltage detecting systems (VDS). The new solution prototype is described in this paper, highlighting the advantages in terms of a significant reduction of both direct costs of equipment and infrastructures and indirect costs of installation and service interruption. T…
Model of line to shield power line communication system on a Medium Voltage network
2010
In this paper a complete model of a power line communication (PLC) system on a Medium Voltage (MV) network is presented in the case of a line-ground configuration. A simple and friendly Simulink (R) software is used to develop the model. A distributed parameter MV cable model in line-ground configuration is considered together with the power transformers, the signal coupling networks and the receiving and transmitting line coupling interface of a ST7540 FSK powerline transceiver. The performances of the complete PLC communication system are evaluated for different line lengths by means of the attenuation computed as ratio between the received and transmitted voltage signals.
Power Line Communication in Medium Voltage Systems: Characterization of MV Cables
2008
The aim of this paper is to illustrate the development of a theoretical and experimental study on the characterization of medium voltage (MV) cables in the frequency range 25-200 kHz. Two transmission line configurations, line-ground and line-line, were considered in order to evaluate the main parameters, such as the characteristic impedance and the attenuation constant alpha. A simplified model of the line-ground configuration is proposed which allows one to evaluate the characteristic impedance and the attenuation constant by means of geometrical dimensions. The model was verified by experimental measurements on commonly used MV cables, RG7H1R, with an aluminium core of different sections…