Transmission loss allocation: a comparison of different practical algorithms

Conejo, Antonio J.; Arroyo, José M.; Alguacil, Natalia; Guijarro, A. L.

doi:10.1109/tpwrs.2002.800894

Cited by 311 publications

(112 citation statements)

References 17 publications

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“…The interaction stops when the grid congestion and voltage problems are solved. The principle of the centralized capacity allocation is similar to the pro-rata approach that was proposed to share the transmission loss [6].…”

Section: Research In Academic Fieldmentioning

confidence: 99%

“…This capacity depends on the capacity management mechanism described in Section 4 and can be different in each period. Thus, the constraint in Equation (6) defines that the power supplied by the external suppliers to each EV-VPP P SP(t) must be lower or equal to the capacity allocated P Max_Alloc(t) . The reactive power generation Q CAP(t) is limited by the capacitor bank capacity (Q Max ) connected at the medium-voltage side of the substation Equation (7).…”

Section: Sp(t)mentioning

confidence: 99%

“…A pro-rata approach [6] (or proportionate allocation) assigns an amount of a fraction, according to its share of the whole. In the initial scheduling, the EV-VPP agents assume that it is possible to use all of the power capacity available in the power transformer.…”

Section: Hv/mv Power Transformer Pro-rata Mechanismmentioning

confidence: 99%

See 2 more Smart Citations

Integration of Electric Vehicles into the Power Distribution Network with a Modified Capacity Allocation Mechanism

Morais

Sousa

et al. 2017

Energies

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Abstract:The growing penetration of electric vehicles (EVs) represents an operational challenge to system operators, mainly at the distribution level by introducing congestion and voltage drop problems. To solve these potential problems, a two-level coordination approach is proposed in this study. An aggregation entity, i.e., an EV virtual power plant (EV-VPP), is used to facilitate the interaction between the distribution system operator (DSO) and EV owners considering the decentralized electricity market structure. In level I, to prevent the line congestion and voltage drop problems, the EV-VPP internally respects the line and voltage constraints when making optimal charging schedules. In level II, to avoid power transformer congestion problems, this paper investigates three different coordination mechanisms, or power transformer capacity allocation mechanisms, between the DSO and the EV-VPPs, considering the case of EVs charging and discharging. The three mechanisms include: (1) a market-based approach; (2) a pro-rata approach; and (3) a newly-proposed constrained market-based approach. A case study considering a 37-bus distribution network and high penetration of electric vehicles is presented to demonstrate the effectiveness of the proposed coordination mechanism, comparing with the existing ones.

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Section: Research In Academic Fieldmentioning

confidence: 99%

Section: Sp(t)mentioning

confidence: 99%

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Integration of Electric Vehicles into the Power Distribution Network with a Modified Capacity Allocation Mechanism

Morais

Sousa

et al. 2017

Energies

View full text Add to dashboard Cite

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“…Power allocation exclusively for radial grids is considered in [8]. A comparison of different loss allocation algorithms is made in [9]. In the literature, one can see cumbersome formulas that depend on grid configuration.…”

Section: Introductionmentioning

confidence: 99%

Grid Study on the Basis of Reciprocal Power Losses Calculation

Survilo

2017

PEE

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-It was found that the losses of some supplierconsumer pairs in a grid (reciprocal losses) can be negative. Upon exploring this issue, it turned out that this phenomenon is not rare and is a result of a certain distribution of the power of electricity suppliers between consumers. Negative reciprocal losses indicate that the overall grid losses are increased. They can be eliminated by redistributing the suppliers' power. Computing the reciprocal losses, additional properties of a power system can be defined, which facilitates the determination of its more economical operation mode.

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“…Clearly, the focus has been mainly on transmission systems, due to the large amount of losses involved and the increasing number of agents with open access to transmission networks. In this way, several proposals have appeared in the technical literature and some comparative studies were presented [4,24]. For distribution systems some proposals have been made, mainly considering the presence of distributed generation [8,26].…”

Section: Introductionmentioning

confidence: 99%