Current Pricing: Avoiding Marginal Losses in Locational Marginal Prices for DC Grids

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Abstract

Nodal pricing or LMP is one option to deal with congestion in the distribution grids that are expected due to the emergence of electric vehicles. When optimal power flow (OPF) with losses is used to determine optimal dispatch and locational marginal prices (LMP) of a power systems, the prices include marginal losses. Marginal losses are double the amount of the real physical losses. This leads to over collection and higher prices for costumers far from generators. In this paper current pricing is proposed as a method to get nodal prices without marginal losses. DC grids are used for simpler exact modeling with an OPF formulation in terms of voltage and current instead of power. The nodal prices without marginal losses are derived by linearizing the quadratic OPF problem by only fixing the voltage, instead of using taylor approximation. An example illustrates the difference of nodal prices with marginal losses and current pricing.

Original languageEnglish
Title of host publicationProceedings of the 2017 IEEE Manchester PowerTech
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages1-6
Number of pages6
ISBN (Electronic)978-1-5090-4237-1
DOIs
Publication statusPublished - 2017
Event12th IEEE PES PowerTech Manchester 2017 Conference: Towards and Beyond Sustainable Energy Systems - Manchester, United Kingdom
Duration: 18 Jun 201722 Jun 2017
Conference number: 12

Conference

Conference12th IEEE PES PowerTech Manchester 2017 Conference
Abbreviated titleIEEE PowerTech Manchester 2017
CountryUnited Kingdom
CityManchester
Period18/06/1722/06/17

Keywords

  • Load modeling
  • mathematical modeling
  • Pricing
  • Linear programming
  • Economics
  • Power systems
  • Generators

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