Merging conventional and phasor measurements in state estimation: A multi-criteria perspective

Tavares, Bruna; Freitas, Víctor de; Miranda, Vladimiro; Costa, Antonio Simões

doi:10.1109/isap.2017.8071423

Cited by 4 publications

(2 citation statements)

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“…The studies of SE with PMU measurements have already been extensively carried out, the approaches are either based on the combination of SCADA and PMU measurements [12][13][14][15][16][17][18] or purely PMU measurements [8,[19][20][21]. The former ones can be further divided into two categories: namely hybrid state estimator method and multistage method.…”

Section: Introductionmentioning

confidence: 99%

“…To address the issues of time scale inconsistency, the multi‐stage approach is adopted by processing PMU measurements or SCADA measurements in independent stages. A Bar‐Shalom‐Campo data fusion technique is applied to combine the results of different PMU and SCADA stages in [17, 18]. All those methods based on the combination of SCADA and PMU measurements adopt various principles to enhance the robustness against gross errors.…”

Section: Introductionmentioning

confidence: 99%

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Power system state estimation using conditional generative adversarial network

Chai

et al. 2020

IET Generation, Transmission & Distribution

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Accurate power system state estimation (SE) is essential for power system control, optimization, and security analyses. In this work, a model-free and fully data-driven approach was proposed for power system static SE based on conditional generative adversarial network (GAN). Comparing with the conventional SE approach, i.e., weighted least square (WLS) based methods, any appropriate knowledge of the system model is not required in the proposed method. Without knowing the specific model, GAN can learn the inherent physics of underlying state variables purely relying on historic samples. Once the model has been trained, it can estimate the corresponding system state accurately given the system raw measurements, which are sometimes characterized by incompletions and corruptions in addition to noises. Case studies on the IEEE 118-bus system and a 2746-bus Polish system validate the effectiveness of the proposed approach, and the mean absolute error is less than 1.2e-3 p.u. and 5.3e-3 rad for voltage magnitude and phase angle, respectively, which indicates a high potential for practical applications.

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