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CIGRE/CIRED Guidelines for power quality monitoring measurement-locations, processing and presentation of data

pubblicazioni - Articolo

CIGRE/CIRED Guidelines for power quality monitoring measurement-locations, processing and presentation of data

A seguito della sempre maggior diffusione a livello mondiale dei sistemi di monitoraggio del sistema elettrico, il Comitato di Studio CIGRÉ C4 ed il CIRED hanno costituito il gruppo di lavoro congiunto (JWG) C4.112 “Linee guida per il monitoraggio della Power Quality, la localizzazione dei siti di misura, l’elaborazione e la presentazione dei dati”, allo scopo di fornire indicazioni utili agli operatori di rete per la realizzazione ottimale di questi sistemi. L’articolo descrive sinteticamente il contenuto del rapporto tecnico finale che è stato prodotto dal gruppo di lavoro nella prima metà del 2014 sulla base dei risultati acquisiti nel periodo Febbraio 2011÷Febbraio 2014.

There has been a noticeable increase in the amount of power quality monitoring taking place in electric power systems in recent years. Monitoring of voltages and currents gives the system operator information about the performance of their system, both for the system as a whole and for individual locations and customers. There is also pressure from customers and regulatory authorities to provide information on the actual power quality level.

Developments in enabling technology (monitoring equipment, communication technology, data storage and processing) have made it possible to monitor on a large scale and to record virtually any parameter of interest. The change in types of loads connected to the network and proliferation of non-conventional, power electronic interface connected, generators as well as the envisaged further increase in non-conventional types of loads/storage (e.g., electric vehicles) puts additional pressure on system operators to monitor and document various aspects of system performance.

While many system operators are installing monitoring equipment and while more and more manufacturers have monitors available, there is a lack of knowledge and agreement on a number of aspects of the monitoring process and in particular on processing the recorded data. Users of the data, be it system operators or their customers, are increasingly requesting useful information rather than just large amounts of data to be provided by installed monitors and supporting software.

In a response to this renewed interest in power quality monitoring and recognising the cross-boundary relevance of power quality monitoring, CIGRÉ Study Committee C4 and CIRED established the Joint Working Group (JWG) C4.112: “Guidelines for power quality monitoring – measurement locations, processing and presentation of data” in late 2010. The JWG started work at the end of January 2011 and completed it in January 2104.This paper presents an overview of the Technical Brochure (TB) written by the JWG during the first half of 2014 based on the results achieved between February 2011 and February 2014.

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