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Impact of Smart Metering Data Aggregation on Distribution System State Estimation

Fan

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Authors

Fan



Abstract

Pseudo MV/LV (Medium/Low Voltage) transformer loads are usually used as partial inputs to the Distribution System
State Estimation (DSSE) in MV systems. Such pseudo load can be represented by the aggregation of Smart Metering (SM) data. This follows the government restriction that Distribution Network Operators (DNOs) can only use aggregated SM data. Therefore, we assess the subsequent performance of DSSE, which shows the impact of this restriction - it affects the voltage angle estimation significantly. The possibilities for improving the DSSE accuracy under this restriction are further studied. First, two strategies that can potentially relax this restriction’s impact are studied: the correlations among pseudo loads’ errors are taken into account in the DSSE process; a power loss estimation method is proposed. Second, the investments (i.e., either adding measurement devices or increasing the original devices’ accuracy) for the satisfactory DSSE results are assessed. All these are for addressing DNOs’ concerns on this restriction.

Acceptance Date May 26, 2016
Publication Date May 26, 2016
Journal IEEE Transactions On Industrial Informatics
Print ISSN 1551-3203
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Pages 1426 - 1437
DOI https://doi.org/10.1109/TII.2016.2573272
Keywords Distribution system state estimation (DSSE), medium voltage power system, smart meter
Publisher URL https://ieeexplore.ieee.org/document/7479535/

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