Power Quality Evaluation in Active Distribution Network Based on Its Operation Characteristics

doi:10.3969/j.issn.1000－7229.2016.12.016

Abstract

Abstract: When faults occur in active distribution network (ADN), the isolation of malfunctions can ensure continuous power supply for un-faulted region. Based on these active operation characteristics, this paper proposes an power quality evaluation method for ADN with considering the multi operation states of ADN. Firstly, the state duration of components is sampled, a sequence of the system state and duration can be further obtained, and the topology and parameter identification of network in each state are implemented. Then Latin hypercube sampling is adopted for loads and the distributed generation outputs, and the coordinated control between energy storage and loads is implemented considering the principle of power balance in the island mode, so that the power of the distributed generation, energy storage and loads can be obtained. Finally, we calculate the probabilistic power flow under each running state, statistically analyze the voltage amplitude results, and use the proposed indexes of voltage deviation risk and island node outage probability to evaluate the voltage quality. The application in the ADN test system based on RBTS-Bus2 proves the efficiencies of the proposed method.

Key words: active distribution network (ADN), probabilistic power flow calculation, power quality evaluation

CLC Number:

TM 712

SONG Mengqi, TAO Shun, CHEN Pengwei. Power Quality Evaluation in Active Distribution Network Based on Its Operation Characteristics

[J]. Electric Power Construction, 2016, 37(12): 119-.

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