Application of the Conservative Power Theory Current Decomposition in a Load Power-Sharing Strategy Among Distributed Energy Resources
| Autor: | Ali Mortezaei, Tiago Davi Curi Busarello, Adriano Peres, Marcelo Godoy Simões |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
business.industry
Computer science 020209 energy 020208 electrical & electronic engineering Ground and neutral 02 engineering and technology AC power Industrial and Manufacturing Engineering Smart grid Control and Systems Engineering Control theory Distributed generation 0202 electrical engineering electronic engineering information engineering Polyphase system Voltage droop Electrical and Electronic Engineering business Dispatchable generation |
| Zdroj: | IEEE Transactions on Industry Applications. 54:3771-3781 |
| ISSN: | 1939-9367 0093-9994 |
| Popis: | The conservative power theory (CPT) is a time-domain theory applicable to any periodic signal single- or polyphase system with or without a neutral conductor. The principle operation is the orthogonal decomposition of electrical variables, resulting in electrical quantities with physical meaning. An important feature of the CPT is the current decomposition. It consists of decomposing any current into five parts. The label of these parts is active current, reactive current, scattered active current, scattered reactive current, and generated current. This paper proposes the application of the current decomposition of the CPT in distributed energy resources (DERs). A supervisory controller (SC) uses the current decomposition in a load power-sharing strategy. The combination of these two issues is the main contribution of this paper. Moreover, the proposal of this paper is more attractive than the conventional droop strategy since the DERs follow their current reference in a current-controlled mode, making the load sharing faster, more reliable, and more accurate. A clear understanding of how the CPT decomposes load currents into its parts is presented, as well as the drawback found in droop strategy when dealing with load power sharing. Later, the SC load power-sharing strategy is described, indicating that the proposal of this paper makes an SC to have a broad option when managing a smart grid with dispatchable DERs. A case study with experimental results shows the efficacy of applying current decomposition of the CPT in load power-sharing strategies. |
| Databáze: | OpenAIRE |
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