Line Loss Minimization Control in a Loop Distribution System using Circulating Current Compensation and Reactive Current Suppression by a Unified Power Flow Controller

Yamada, Kazuhei; Takeshita, Toru; Kunii, Yasuyuki; Ueda, Fukashi

doi:10.1541/ieejias.133.29

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…P loss ≤ P loss−min P loss −P loss−ori P loss−min −P loss−ori P loss−min < P loss < P loss−ori 0 P loss−ori ≤ P loss (17) where P loss−ori is the original loss of the closed-loop network without any control measure, and P loss is the variable describing the power loss change with the compensated voltage. According to the "power quality-admissible deviation of supply voltage," the range of voltage deviation is set within ±7%U N (rated voltage).…”

Section: Fuzzy Membership Functionmentioning

confidence: 99%

“…[14][15][16], an optimal control method considering line loss and node voltage for the loop distribution system was studied, which could achieve the optimal goal by suppressing the loop current via UPFC. On this basis, the approach of controlling loop current and reactive current together by UPFC was presented to further lower the power loss [17]. Nevertheless, limited by cost, UPFC is less applied in practical distribution systems [18].…”

Section: Introductionmentioning

confidence: 99%

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An overall cost based on optimal power flow control method of dual‐source distribution network with closed‐loop operation using UPFC

Zhang

Chen

2016

IEEJ Transactions Elec Engng

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Supply reliability can be effectively improved by a normally closed-loop operation of a distribution network with dual sources, in which there might be large circulating power flow. A unified power flow controller (UPFC) has the powerful capability to adjust the power flow, but it would face a technoeconomic bottleneck when applied to the distribution system. Based on the constant current load model, the power flow distribution of a normally closed-loop distribution network with dual sources is analyzed, and the relationship between the network loss, the voltage deviation of load nodes, and the compensated voltage is deduced. Then, the optimal power flow control model is presented considering such economic factors as the network loss, the voltage deviation of load nodes, and the cost of the apparatus used to produce the compensated voltage. In order to simplify the problem of multiobjective optimization into a single-objective optimization model, the fuzzy membership functions and their weight coefficients of the network loss, the voltage deviation, and the UPFC's cost are designed, and the weights are determined according to their contribution in economy. The optimal control model is solved with the global optimal algorithm. Simulation results based on PSCAD prove that this method can ensure overall economy of the system with balancing the power distribution, controlling the node voltage deviation, and decreasing the active power loss of the network effectively.

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Section: Fuzzy Membership Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An overall cost based on optimal power flow control method of dual‐source distribution network with closed‐loop operation using UPFC

Zhang

Chen

2016

IEEJ Transactions Elec Engng

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Line Loss Minimization in Radial Distribution Systems using Multiple STATCOMs and Static Capacitors

Miyazaki

Takeshita

2015

IEEJ Journal IA

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This paper presents line loss minimization in a radial distribution system using multiple Static Synchronous Compensators (STATCOMs) and static capacitors. The reactive current references of the STATCOMs and the number of installed static capacitors for line loss minimization are derived. Under line loss minimization, the reactive current of each load is completely compensated by the closest STATCOMs at the left and right sides of the load. The compensating reactive currents of the STATCOMs for each load can be calculated by the line resistances between the STATCOMs and the reactive current of the load. The number of installed static capacitors for line loss minimization is selected as the closest integer to the optimal real number for achieving line loss minimization. The effectiveness of the proposed line loss minimization is verified experimentally using a laboratory prototype system.

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Construction of search method for optimal interconnection pattern in distribution system operated by multiple loops

Ishikawa

Yamamura

Kunii

et al. 2020

2020 23rd International Conference on Electrical Machines and Systems (ICEMS)

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Line Loss Minimization Control in a Loop Distribution System using Circulating Current Compensation and Reactive Current Suppression by a Unified Power Flow Controller

Cited by 5 publications

References 4 publications

An overall cost based on optimal power flow control method of dual‐source distribution network with closed‐loop operation using UPFC

An overall cost based on optimal power flow control method of dual‐source distribution network with closed‐loop operation using UPFC

Line Loss Minimization in Radial Distribution Systems using Multiple STATCOMs and Static Capacitors

Construction of search method for optimal interconnection pattern in distribution system operated by multiple loops

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