Architecture impact on integrity of electrical installations: Cut&amp;tie rule, ring configuration, floating node

IEEE Trans. on Ind. Applicat.

Hesla²

2013

Self Cite

The aim of this paper is to present shortly syntax and semantics of a language to program operational procedures. This formal language is a unified suite of symbols, meanings, and codes used on the basis of conventional rules. Symbols have to be related to meanings and to be shared: operational, mathematical, and graphical symbols shown are preferred but are not mandatory. Parise program allows to express concepts and procedures, to make analysis of formal connections and bonds between components of the electrical power system. It allows to provide information and give instructions for the execution of certain operations following correct procedures. The programming language elements may be used in an interactive programming environment

Section: Road Traffic Analogy: the Genetic Code For The Rulesmentioning

confidence: 99%

A Syntax and Semantics of a Language for Operational Procedures

IEEE Trans. on Ind. Applicat.

Hesla²

2013

Self Cite

“…R EQUIREMENTS of high reliability of loads, like in data centers, are satisfied by appropriate system architecture for the electrical distribution. To survive contingency conditions, the tier of an electrical system's complexity will be increased by the inclusion of more main supplies and alternate sources, by standby and emergency sources, and by modeling suitably the configuration of the distribution and its protection coordination that allows selecting and isolating fault conditions [1].…”

Section: Introductionmentioning

confidence: 99%

“…Briefly, the architectural measures [1] can be applied in actions on the redundancy of the following (Fig. 1):…”

Section: Introductionmentioning

confidence: 99%

“…1) the supply system adopting two-or multiple-ended configuration designing system nodes energized by two or multiple sources, operating separately (exclusivity rule) [5]; 2) the distributors adopting two-or multiple-pole configuration designing system nodes energized by two or multiple distributors-ways, operating simultaneously; 3) the equipment supplies adopting dual-corded equipment energized by two ways, operating simultaneously. Actions mixed are practically applied on the distributors and sources adopting the criterion of partitioning and making redundant the cut and tie rule [1], [5] on a double system of sources-distributors with both supplies sharing the load on the supplying systems at all times. A source node/switchboard (SWB) can be subdivided in more sections of the same distribution level, interconnected by tie switches T .…”

Section: Introductionmentioning

confidence: 99%

“…A source node/switchboard (SWB) can be subdivided in more sections of the same distribution level, interconnected by tie switches T . Thus, the T switches can generate a united system of more system nodes [1] (Fig. 2).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrical Distribution for a Reliable Data Center

IEEE Trans. on Ind. Applicat.

2013

Self Cite

For the reliability of data centers, the electrical distribution architecture has a vital impact on performances throughout its life cycle. Special standards establish tier classifications for the site infrastructures. The switchboard (SWB) design needs to plan the load balancing, the future expansion and rehabilitation of the distribution (road map), and periodic maintenances without loss service continuity. The protection must be coordinated for the selectivity of the fault on the final circuits to ensure service continuity of the whole system. Equipment like electronic components exhibits excessive inrush currents at start-up that request a rating current value higher than the load current value. Maintaining for many years a protection coordination tolerant to the initial inrush current, it is a technical inadmissible inaccuracy for the data center service. The failure of a final circuit not adequately selected and cleared can cause an impact on the fault selectivity on the SWB section or all the uninterruptible power system supply. Starting systems for equipment should be adopted to solve the problem of inrush current and to allow an adequate protection coordination for the long service of the data center.

Architecture of Electrical Installations: The Node Double Two

2008 IEEE Industry Applications Society Annual Meeting

Gabelli

Berenato³

et al. 2008

The architecture of a power system can be configured in increasing complexity related to its exigencies, taking actions on the sources and on the configuration. In the failure cases, it has to guarantee availability and integrity, the time to repair the components has to be compatible to avoid the loss service continuity. The paper relates on the special configuration of the node "double two", constituted by two, and so more, automatic transfer systems connectible in parallel, and reports on the validation tests executed. The component systems are synchronized and conditioned to guarantee a complete redundancy or/and a more flexible operation. The innovation it is not only technological, but also of methodology and of architecture, the node 22 constitutes a sample of open systems, basilar for flexible architectures of high performances.978-1-4244-2279-1/08/$25.00