Use of Local Dynamic Electricity Prices for Indirect Control of DER Power Units

Per Bromand Nørgård, Fridrik Rafn Isleifsson

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Abstract

The regulation capability that may be provided by the individual small-scale distributed energy resources (DER power units) may be insignificant. However, the aggregated response from a large number of DER power units can be significant and thereby provide valuable system services to the power system. A challenge is to find a cheap, simple and robust way to requests the proper power regulation by the DER power units. The use of broadcasted, dynamic power prices and volunteer responses is one option. The paper presents a proposal for and an illustration of advanced generation of local, dynamic electricity prices for indirect control of active power. The local, dynamic electricity prices are realised as dynamic adjustments of the quasi-stationary global power price. The aims of the dynamic price adjustments are to prevent overloading of the grid, to reduce the grid power losses and to regulate the grid voltage. The algorithms generating the local prices are dynamically adjusted according to the actual realised responses to the dynamic prices. Results are presented from an adapted version of the control principle implemented and tested in DTUs experimental research power system, SYSLAB, including wind power, solar power, flexible load and electrical storage. The local power price generation is based on the actual Nord Pool DK2 Spot prices on hourly basis as the quasi-stationary global electricity price, and the local SYSLAB's power exchange with the national grid as basis for the dynamic price adjustment.
Original languageEnglish
Title of host publicationProceedings of CIRED 2013
PublisherIEEE
Publication date2013
Article number0267
ISBN (Electronic)978-1-84919-732-8
DOIs
Publication statusPublished - 2013
Event22nd International Conference on Electricity Distribution - Stockholm, Sweden
Duration: 10 Jun 201313 Jun 2013

Conference

Conference22nd International Conference on Electricity Distribution
Country/TerritorySweden
CityStockholm
Period10/06/201313/06/2013

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