Toward the Universal DC Distribution System

Mackay, Laurens; Blij, Nils H. van der; Ramírez-Elizondo, Laura; Bauer, Pavol

doi:10.1080/15325008.2017.1318977

Cited by 64 publications

(30 citation statements)

References 28 publications

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“…These conversions limit the power capacity, energy efficiency and operational flexibility of the network. DC distribution systems (DCDS), by contrast, remove AC/DC conversions and connect DC prosumers directly, thereby becoming a promising alternative to AC systems [1].…”

Section: Markets For Direct Current Distribution Systemsmentioning

confidence: 99%

Markets for Direct Current Distribution Systems: Towards Energy-based vs Flex-based Designs

Piao

Vries

Weerdt

et al. 2019

2019 16th International Conference on the European Energy Market (EEM)

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Direct Current Distribution System (DCDS), a promising alternative to existing AC systems, connect customers to DC energy sources without AC/DC conversion. The unique features of DC, including the power-voltage coupling effect, impose different requirements to DCDS operation compared to AC. Addressing a liberalized energy market, this paper investigates the significant impact of market design on DCDS operation with an empirical analysis of electric vehicle charging. With an empirical analysis on EV charging, we investigate the level of efficiency a centralized market may theoretically reach, then compare it with a market based on prosumers' local decision.

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Section: Markets For Direct Current Distribution Systemsmentioning

confidence: 99%

Markets for Direct Current Distribution Systems: Towards Energy-based vs Flex-based Designs

Piao

Vries

Weerdt

et al. 2019

2019 16th International Conference on the European Energy Market (EEM)

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“…The latter's unique technical features, including low system inertia, strict power limits and power-voltage coupling [13], pose new challenges to the market design. First, DCDS substations, either connected to AC or DC transmission systems, are typically converters with much stricter power limits than AC transformers [14]. While the latter have a higher tolerance to temporary overloading, the precision of converter design and manufacturing leaves little room for DC converters to be overloaded.…”

Section: Introductionmentioning

confidence: 99%

Electricity Markets for DC Distribution Systems: Design Options

et al. 2019

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DC distribution systems (DCDSs) are a promising alternative to AC systems because they remove AC-DC conversions between renewable sources and loads. Their unique features compared to AC include low system inertia, strict power limits and power–voltage coupling. In a liberalised electricity market, merely applying an AC market design to a DCDS cannot guarantee the latter’s supply security and voltage stability; new markets must be designed to meet DC challenges. This article identifies the key design options of DCDS electricity markets. To identify these options, we develop a comprehensive design framework for local electricity markets; to our knowledge, we provide the first such analysis. Whereas previous studies focus on separate aspects of DCDS markets, we widen the scope to include the role of market architecture and investigate the arrangements of sub-markets. As an illustration, we demonstrate three promising DCDS market designs that can be defined in our framework, and provide a first assessment of their performance.

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“…Therefore, nodal voltage is a key indicator of DCDS operational status, while voltage control should go with power flow optimization and congestion management. However, with power flow control converters, which introduce voltage differences in series with lines, the power flow and voltage can still be controlled independently [7].…”

Section: A Direct P-v Couplingmentioning

confidence: 99%

“…It should be budgetbalanced so that there is no fiscal imbalance when it is cleared. Scalability [7]: To serve more customers in a regional DCDS, the market design should be efficient in computation and communication. Decentralized mechanisms are preferred.…”

Section: Cost-causalitymentioning

confidence: 99%

“…In this section, we distinguish the services that are tradable in a DCDS, then investigate the advantages and disadvantages they bring to the electricity market. Table 1 reviews the general requirements for DCDS operation, from power balancing to various ancillary services [1][2] [7][8] [9], then evaluates their tradability in terms of participation, exchangeability, and cost-causality.…”

Section: Services To Tradementioning

confidence: 99%

See 1 more Smart Citation

Electricity market design requirements for DC distribution systems

Piao¹,

Weerdt²,

Vries

2017

2017 IEEE Second International Conference on DC Microgrids (ICDCM)

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Abstract-DC distribution systems (DCDS) connect local generators and loads directly. By avoiding unnecessary losses in AC-DC conversion, DCDS offers higher energy efficiency. Since different parties in a DCDS may have conflicting goals, matching between power supply and demand should be done with carefully designed allocation rules and monetary transfers, such that no one prefers to act otherwise than the outcome of the allocation. This paper reveals DCDS' unique operational requirements and indicates the challenges and opportunities they pose to market design. A design framework is introduced into DCDS electricity market, incl. tradable services, design goals, market participants, design options and performance criteria. We review the existing market models for AC and DC distribution systems and point out the direction for future work. Keywords-electricity market, market design, DC distribution

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Toward the Universal DC Distribution System

Cited by 64 publications

References 28 publications

Markets for Direct Current Distribution Systems: Towards Energy-based vs Flex-based Designs

Markets for Direct Current Distribution Systems: Towards Energy-based vs Flex-based Designs

Electricity Markets for DC Distribution Systems: Design Options

Electricity market design requirements for DC distribution systems

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