Technical and non-technical losses calculation in distribution grids using a defined equivalent operational impedance

This study presents an approach to calculate average technical losses (TLoss) and non-technical losses (NTLoss) in distribution grids using an equivalent operational impedance (EOI) calculated from a load flow solution for the transformers’ average loads, obtained from customers’ electric bills. If...

Celý popis

Uloženo v:

Podrobná bibliografie
Vydáno v:	IET generation, transmission & distribution Ročník 13; číslo 8; s. 1315 - 1323
Hlavní autoři:	Manito, Allan R.A, Bezerra, Ubiratan H, Soares, Thiago M, Vieira, João P.A, Nunes, Marcus V.A, Tostes, Maria E.L, de Oliveira, Rafael C
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	The Institution of Engineering and Technology 23.04.2019
Témata:	available active power injections measurements average active power injections average technical losses defined equivalent operational impedance distribution grids distribution networks load flow losses nontechnical losses calculation power engineering computing power measurement power system state estimation reactive power reactive power injections measurements Research Article substations transformer transformers defined equivalent operational impedance transformers distribution networks power system state estimation transformer losses substations power engineering computing power measurement average active power injections reactive power average technical losses nontechnical losses calculation available active power injections measurements reactive power injections measurements distribution grids load flow
ISSN:	1751-8687, 1751-8695
On-line přístup:	Získat plný text
Tagy:	Přidat tag Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!

Popis
Shrnutí:	This study presents an approach to calculate average technical losses (TLoss) and non-technical losses (NTLoss) in distribution grids using an equivalent operational impedance (EOI) calculated from a load flow solution for the transformers’ average loads, obtained from customers’ electric bills. If transformers are supervised, i.e. have available active and reactive power injections measurements or estimates from a state estimator program, the transformers’ average technical and non-technical losses can be calculated by running a load flow for the grid supplied by the transformer and using the definition of EOI presented in this study. For unsupervised transformers, i.e. no measurements or estimates are available, pseudo measurements of average active and reactive power injections can be obtained by a procedure that uses active and reactive power measurements at the feeder substation. The use of this methodology by electric utilities allows the calculation of technical and non-technical losses more accurately, as well as the inclusion of non-technical losses in the distribution networks operation planning. Results using the IEEE 13-bus test system and an urban real distribution grid are presented to demonstrate the effectiveness of the proposed methodology.
ISSN:	1751-8687 1751-8695
DOI:	10.1049/iet-gtd.2018.5334