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A two-step distribution system state estimator with grid constraints and mixed measurements

In this paper we consider the problem of State Estimation (SE) in large-scale, 3-phase coupled, unbalanced distribution systems. More specifically, we address the problem of including mixed real-time measurements, synchronized and unsynchronized, from phasor measurement units and smart meters, into existing SE solutions. We propose a computationally efficient two-step method to update a prior solution using the measurements, while taking into account physical constraints caused by zero-injection buses. We test the method on a benchmark test feeder and show the effectiveness of the approach.

Author(s):

miguel picallo cruz    
Delft University of Technology
Netherlands

Adolfo Anta    
Austrian Insitute of Technology
Austria

Bart De Schutter    
Delft University of Technology
Netherlands

Ara Panosyan    
general electric global research
Germany

 

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