Smart Grid Implementation of Demand Side Management and Micro-Generation

Smart Grid Implementation of Demand Side Management and Micro-Generation

Sasa Z. Djokic (The University of Edinburgh, UK) and Igor Papic (University of Ljubljana, Slovenia)
Copyright: © 2012 |Pages: 19
DOI: 10.4018/ijeoe.2012040101
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Abstract

This paper analyses the influence and effects of demand side management (DSM) and micro-generation (MG) on the operation of future “smart grids.” Using the residential load sector with PV and wind-based MG as an example, the paper introduces a general methodology allowing to identify demand-manageable portion of the load in the aggregate demand, as well as to fully correlate variable power outputs of MG with the changes in load demands, including specific DSM actions and schemes. The presented analysis is illustrated using a detailed model of a typical UK LV/MV residential network.
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The Proposed Aggregation Methodology

In power system analysis, bulk load supply points (BLSPs) at 11 kV, 33 kV or higher voltage levels are typically represented by aggregate system load models. In order to be accurate, these aggregate models should correctly represent not just the supplied loads, but also all network components (e.g., cables, transformers, or reactive power control elements), as well as all distributed generation units connected downstream the point of aggregation.

Aggregation of highly dispersed loads and MG units in typical distribution networks is not a simple task and there is virtually no work in this area in existing literature. In order to fill this gap, an aggregation methodology is introduced in this paper and discussed for residential load sector, where end-use loads and MG units are connected in parallel in LV networks. Figure 1 illustrates the general process of aggregation, which starts at LV level and proceeds to higher, i.e., MV levels (Collin, 2011a).

Figure 1.

The proposed aggregation methodology

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