Optimal allocation of PMUs in active distribution network considering reliability of state estimation results
Mohammad Gholami,Ali Abbaspour,Sajjad Fattaheian-Dehkordi,Matti Lehtonen,Moein Moeini-Aghtaie,Mahmud Fotuhi +5 more
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TLDR
The reliability of satisfying accuracy constraints (RSACs) as an important requirement in the DSE problem is introduced and the results proved that employing the RSACs in the optimal PMU placement problems leads to a PMU configuration with the optimum RSacs.Abstract:
Due to the lack of data in active distribution networks, employing new accurate measurement devices like phasor measurement units (PMUs) and micro-PMUs with a high reporting rate becomes an inevitable choice for the future vision of distribution systems. As a result, different algorithms have been presented to optimally place PMUs cost-effectively based on the estimation errors of the distribution state estimation (DSE) results. However, any component failure in measurement devices or communication links between sending ends and monitoring system of the distribution management system can significantly affect the DSE results. In response, this study introduces the reliability of satisfying accuracy constraints (RSACs) as an important requirement in the DSE problem. This reliability index along with the estimation errors of the DSE results are then used as two performance indices for determining the optimal number and location (configuration) of PMUs. Finally, the performance of the proposed algorithm in comparison with traditional approaches in different topologies and operating conditions of two considered ADNs is evaluated. The results proved that employing the RSACs in the optimal PMU placement problems leads to a PMU configuration with the optimum RSACs and also the cost and latency of the communication system between all configurations which have the same measurement cost and satisfy accuracy constraints of DSE results.read more
Citations
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A secured, reliable and accurate unplanned island detection method in a renewable energy based microgrid
TL;DR: The results show that the proposed unplanned island detection method in a microgrid with micro phasor measurement unit is robust, reliable, cost effective and increases situational awareness.
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Voltage Estimation of Active Distribution Network Using PMU Technology
TL;DR: In this article, an online voltage estimation technique using PMU (Phasor Measurement Unit) technology is proposed to enhance a distribution network's reliable operation and real-time monitoring.
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Forecasting Aided Distribution Network State Estimation Using Mixed μPMU-RTU Measurements
TL;DR: In this article , a forecasting-aided state estimation method for distribution networks with the mixed measurements of microphasor measurement unit (μPMU) and remote terminal unit (RTU) is proposed.
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A Novel Multi-Area Distribution State Estimation Approach for Active Networks
Mohammad Gholami,Ali Abbaspour Tehrani-Fard,Matti Lehtonen,Moein Moeini-Aghtaie,Mahmud Fotuhi-Firuzabad +4 more
TL;DR: A hierarchically distributed algorithm for the execution of distribution state estimation function in active networks equipped with some phasor measurement units employs voltage-based state estimation in rectangular form and is well-designed for large-scale active distribution networks.
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Neutral-to-Earth Voltage (NEV) and state estimation for unbalanced multiphase distribution systems based on an optimization model
TL;DR: In this paper , the objective function is determined based on the weighted least squares considering the phasor measurements obtained from the grid in rectangular coordinates, and an optimization problem is formulated being the state variables vector formed by multiphase branch currents and also by the neutral current associated to each system bus.
References
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