Improving distribution system state estimation with synthetic measurements
Cano, Jose M.; Arboleya, Pablo; Rashad Ahmed, Mahmoud; Mojumdar, Md Rejwanur Rashid; A. Orcajo, Gonzalo
Peer reviewed, Journal article
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Date
2021Metadata
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Cano, J. M., Arboleya, P., Ahmed, M. R., Mojumdar, M. R. R., & Orcajo, G. A. (2021). Improving distribution system state estimation with synthetic measurements. International Journal of Electrical Power & Energy Systems, 129, 106751. 10.1016/j.ijepes.2020.106751Abstract
Distribution state estimation is a desired feature of modern power systems. The availability of measurements from smart meters has opened the door to extend the application of state estimation techniques down to end customers, preferably at the secondary distribution transformer level. However, the light coupling between phases makes the estimation of certain state variables, such as voltage phase angles, a great challenge. This paper proposes the use of synthetic measurements as a means of including cross-coupled information in the available set of measurements. This possibility can be easily implemented in line supervisors located at secondary transformer stations without the need for new hardware, just by embracing a different connection of measurement devices. This work demonstrates that this costless action results in a strong reduction of the sensibility of phase angle estimation errors with respect to measurement noise, thus leading to an important improvement in the quality of the results.