Maurizio Grossoni

Power quality measurements in telecommunication exchanges

This work shows an example of power quality (PQ) data of four important telecommunication sites placed in Rome, Italy. The data are collected, elaborated and analyzed by four self made instruments developed for this purpose and inserted in four automatic telecommunication exchanges kindly at our disposal by TELECOM, the most important Italian telecommunication company. The analysis shows the active and reactive power consumption and, for one site, the harmonic distortion.

An innovative approach to the environmental system design for TLC rooms in Telecom Italia

In this paper we describe the innovative approach that Telecom Italia is adopting in order to identify new strategies for saving energy in the environmental systems. After presenting the guidelines of the Italian Operator in the matter, we concentrate on the solutions adopted to optimise the cooling systems within TLC rooms. In particular, the paper focuses on an energy simulator (SIMEN), that has been developed to provide Telecom Italia with a support tool, useful to evaluate and compare different cooling systems, and to help identifying the strategic solutions for energy saving. Furthermore, we present the results of the analyses we carried out on some TLC rooms of Telecom Italia, by using SIMEN.

Some Special Devices used in the New Type of Power Plants for the Italian Telecommunication Systems

The paper describes some devices specially developed for the new type of centralized power plants for telecommunication equipment used by SIP, Italian Telephone Company. The remote rectifiers output power limitation device is of great usefulness in the power rating of the primary power plant, in particular of emergency generating sets. The selective supervising devices are an integral part of the power plants policy that requires, for reliability reasons, parallel operating stand-by units.

Field Applications: Fuel Cells as Backup Power for Italian Telecommunication Sites

Fuel cell technology has often been viewed as a promising alternative to batteries and generators for the backup power requirements of the telecommunications industry. Recent collaboration between ReliOn-a fuel cell manufacturer with more than 850 kW of product sold to customers to date, SGS Future-the Italian distributor of ReliOns fuel cell products, Telecom Italia and Pirelli Labs has resulted in thorough field testing and data compilation of fuel cells in a backup operation. This paper presents the teams experiences at three installations in Northern Italy where the fuel cell solutions are providing backup power for point-to-point digital link applications. This joint-authorship approach provided unique perspectives from both the manufacturer, ReliOn and the end-user, telecom Italia Spa across the phases of the field trials. Conclusions on battery plant reduction and efficiency of integration over the 6-month trial will be shared

Indoor Lighting Fault Detection And Diagnosis Using A Data Fusion Approach

In this paper, an innovative and automated fault detection and diagnosis (FDD) approach based on high-level correlation rules in order to improve reliability, safety and efficiency of a supervised building is presented. The proposed method is based on the data fusion of different measurements, using their fuzzification and aggregation through suitable operators, in order to get dimensionless severity indicators able to diagnose faults and to identify the possible causes (ranked according their severity) generating them. Thus, a set of possible anomalies that can occur in a building and the correlation with measured physical quantities were identified. Experimentation of this FDD technique was applied to indoor lighting of a real office building. The proposed method was validated over a onemonth period with the aim of detecting anomalous consumption events, considering when and in which circumstances they occurred. After this stage, the FDD system was performed in real time operation.

Power quality in telecommunication exchanges delivery points

Power quality is an important subject to correctly dimension protection devices and back up power systems for next generation of telecommunication network. In this paper it is presented an overview of some power quality data obtained using integrated instruments put inside Chlorides UPS, widely distributed in the world and active for quite a few years, allow statistical evaluations to derive some important convictions about the power quality situation, which are the electrical energy parameters particularly important for the design of new generation tlc apparatuses. The article is focused on the Italian situation and in detail analyzes the mains failures for each Italian region.

Site Power Saving

The solution site power saving, adopted in Telecom Italia by using Ericsson Technology, addresses the Company need of power consumption management optimization on BTS sites.

Innovative energy solutions for telecom networks in the new highly competitive environment

World-wide telecommunications infrastructure is being built and redefined by the advent of new technologies in fibre optics and broadband communications systems. Data and voice transmission no longer require separate facilities and are converging, determining more and more the adoption of common powering solutions using highly distributed architectures. Telecom Italia is adapting its network to the changes required by the high level of competition in the new market environment. In this context powering the telecom equipment is becoming more dependent on the application: central offices, access equipment and residential equipment need different powering solutions. In this paper Telecom Italia describes its main requirements in redefining its network powering, giving considerations on the following subjects: system availability, powering architectures, environmental conditions, system efficiency, remote management, etc. Italtel describes its technical solutions in answer to the new network powering requirements. These solutions take into account different telecom applications allowing the understanding of increasing request for powering flexibility and modularity in order to satisfy the convergence and integration of voice and data networks.

Field Reliability of D.C. Power Plants for Telecommunication Systems

Field reliability data are described with references to 48V/60V 300A power plants, developed by ITALTEL according to specifications of SIP, Italian Telecommunication Operating Company. Each power plant consists of a power distribution system, 60A rectifiers and 25A buck-boost converters, redundant parallel operating with load sharing and selective cut-off of failed unit. The period under examination covers almost 4 years, during which over 200 power plants with more than 600 rectifiers and 700 buck-boost converters have been installed. The methods used for data collection are explained, as well as the statistical instruments used for the comparison of field results and estimated data.