Abstract
This paper proposes a computational process development capable of filling the electric power sector shortage regarding voltage non-conformities identification in electric distribution power grid accounting for loads dynamic behavior at medium and low voltages. Actual distribution power grid data are used, with georeferencing to signal voltage transgressions locations, generate a report with voltage transgression indices and financial reimbursement values provided by legislation. The methodology compares regulatory requirements and makes available in software some possible actions in an attempt to adjust voltage levels, avoiding inconvenience and penalties for energy utilities providers. The method involves a data extractor construction for electricity provider company’s databases, computer simulations and comparison of obtained results with values established in electricity quality control standards. Thus, finding non-conformity locations and determining network adjustments to correct tension indexes in permanent regulation. The proposal features a reduction in electricity utilities operating costs, increasing efficiency in operation and energy quality available to consumers.
Highlights
Several countries set boundaries for adequate and non-adequate voltage on a permanent basis
In 2010, the European Committee for Electrotechnical Standardization (CENELEC), European Committee for Standardization (CEN) and the European Telecommunications Standards Institute (ETSI) establish the main legislative instrument, the European Norm CEI/50160/EN, this defines the voltage characteristics of electricity supplied by public electricity networks and the permissible voltage variation with a 10% tolerance above or below the nominal voltage values [1]
The search is carried out from highest to smallest granularity, i.e., when the interface is asked for data from a specific substation to be simulated, it simultaneously searches for all data related to said substation and stores it in the form of objects that represent and abstract real world behavior, for example: (i) high voltage network (HV), (ii) medium voltage network (MV), (iii) low voltage network (LV), (iv) consumer unit (UC), (v) equipment and cable data and (vi) several others
Summary
Several countries set boundaries for adequate and non-adequate voltage on a permanent basis. In Canada, each electricity distribution company has autonomy to establish its procedures and standards, with CAN/CSA-C61000 and IEEE 519 being the most used [2,3,4,5,6]. Japanese Industrial Standardization (JIS) adopts the JISC 61000 standard for the electric power sector regulation, which is an IEC standards adaptation. In South Africa, the National Electricity Regulator (NER), formed by national electricity supply industry representatives, recommends the NRS 048 standard that regulates the electricity sector and is based on the IEC, CENELEC and IEEE standards, approved in 1996 and updated in 2003 [7].
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