Linear Voltage Based State Estimator for Active Distribution System Including Phasor Measurement Unit (PMU)

Gholami, Mohammad Hadi; Fard, Ali Abbaspour Tehrani; Moeini‐Aghtaie, Moein

doi:10.1109/epdc.2018.8536296

Cited by 11 publications

(5 citation statements)

References 14 publications

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“…From this viewpoint, two types of SE process formulation generally exist in the literature: bus voltage-based and branch current-based formulations. Both of these estimators can be developed in both rectangular and polar coordinates, each one with some unique properties [23]. Based on the features of the voltage-based SE formulation in the rectangular form, i.e., matching with meshed topology, linear measurement function, and low computational burden as presented in [24], this type of estimator is employed for the extraction of system conditions.…”

Section: Active Distribution Network State Estimationmentioning

confidence: 99%

A Novel Multi-Area Distribution State Estimation Approach for Active Networks

et al. 2021

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This paper presents a hierarchically distributed algorithm for the execution of distribution state estimation function in active networks equipped with some phasor measurement units. The proposed algorithm employs voltage-based state estimation in rectangular form and is well-designed for large-scale active distribution networks. For this purpose, as the first step, the distribution network is supposed to be divided into some overlapped zones and local state estimations are executed in parallel for extracting operating states of these zones. Then, using coordinators in the feeders and the substation, the estimated local voltage profiles of all zones are coordinated with the local state estimation results of their neighboring zones. In this regard, each coordinator runs a state estimation process for the border buses (overlapped buses and buses with tie-lines) of its zones and based on the results for voltage phasor of border buses, the local voltage profiles in non-border buses of its zones are modified. The performance of the proposed algorithm is tested with an active distribution network, considering different combinations of operating conditions, network topologies, network decompositions, and measurement scenarios, and the results are presented and discussed.

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Section: Active Distribution Network State Estimationmentioning

confidence: 99%

A Novel Multi-Area Distribution State Estimation Approach for Active Networks

et al. 2021

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“…In this paper, due to high computational speed, linear measurement functions, constant Jacobian matrix and being suitable for both radial and meshed topologies, voltages of the network buses in rectangular form have been selected as state variables [1]:…”

Section: Dse Formulationmentioning

confidence: 99%

“…Also, as presented in [1], for having linear measurement functions in the rectangular form of voltage-based DSE process, pseudomeasurement and flow measurements are converted into bus injection current measurements and flow current measurements respectively using the available voltage profile of the network. For this purpose, in each iteration, the estimated voltage magnitudes and phase angles in the previous iteration are used.…”

Section: Dse Formulationmentioning

confidence: 99%

“…These new players call for bi-directional flow of power in distribution feeders and therefore the structure of distribution networks gradually will be changed to more meshed topology aimed to keep the reliability level of the system. These events can be translated into active distribution networks (ADNs) in which their complexity and dynamics will be intensified over time [1]. In this situation, distribution management systems (DMSs) with advanced and effective monitoring, control, and protection systems need to be developed.…”

Section: Introductionmentioning

confidence: 99%

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Optimal allocation of PMUs in active distribution network considering reliability of state estimation results

Gholami

Abbaspour

Fattaheian‐Dehkordi

et al. 2020

IET Generation, Transmission & Distribution

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“…Distribution networks where PMU based DSSE has been tested are usually benchmark distribution test systems (IEEE, UK test systems, etc.) [29][30][31]. Although examples of small smartgrid distribution networks built up at University Campuses are tested before [32], there is no work reported on real-life distribution network totally covered with PMU measurements.…”

Section: Introductionmentioning

confidence: 99%