Feasibility of adaptive intentional islanding operation of electric utility systems with distributed generation

Caldon, Roberto; Stocco, Andrea; Turri, Roberto

doi:10.1016/j.epsr.2008.06.007

Cited by 63 publications

(31 citation statements)

References 10 publications

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“…In ref. [9], the basic framework of adaptive islanding operation based on the available DGs and system load status at the time of system outage was proposed; but the detailed island partition algorithm was not discussed. With the constraint of power balance, an optimization model of distribution network islanding scheme was established in ref.…”

Section: Introductionmentioning

confidence: 99%

Island partition of the distribution system with distributed generation

Wang

Lin

2010

Sci. China Technol. Sci.

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In this paper, a novel optimum island partition model based on Tree Knapsack Problem (TKP) is presented for the distribution system integrated with distributed generation (DG), and a Depth-first Dynamic Programming Algorithm (DPA) is used to solve this model. With the considerations of the load priority, controlled/uncontrolled loads, and the constraints of power balance, voltage and equipment capacity, the model can meet the practical engineering requirements very well. The island partition problem of the distribution system integrated with multiple DGs is first decomposed into multiple TKPs, each of which is solved by DPA respectively. Then, the initial optimum island partition scheme is gained through an island combination procedure, and the final island partition scheme is obtained after feasibility checking and adjustment. Since the algorithm proposed owns the advantages of strong theoretical foundation and low computational complexity, it can find the approximate optimal solution within a limited time. The results of examples demonstrate the validity of the new model and algorithm. optimum island partition, distribution system, distribution generation (DG), Tree Knapsack Problem (TKP), Depthfirst Dynamic Programming Algorithm (DPA) Citation:Wang X D, Lin J K. Island partition of the distribution system with distributed generation.

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Section: Introductionmentioning

confidence: 99%

Island partition of the distribution system with distributed generation

Wang

Lin

2010

Sci. China Technol. Sci.

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“…In Cases B-1, B-2, and B-3, there are periods during which the energy is wasted and other periods ([t 3 , T e ], [t 5 , T e ] and [t 6 , t m2 ]) during which the power demand cannot be satisfied because the BEs/EVs are short of energy. In an abstract manner, it is the limitations of the ability of the BEs and EV integrations to transfer energy that lead to the dispatch test failure.…”

Section: Model Modification Based On the Power Dispatch Testmentioning

confidence: 99%

“…The increasing penetration levels of DERs together with suitable control strategies are making it possible for an ADN to meet higher reliability requirements and improve power supply security [2][3][4]. When the network undergoes some disturbance, one promising strategy is to operate some portions of the ADN in island mode to ensure uninterrupted power supplies for some of the significant loads [5][6][7]. In this situation, the island partition and the power dispatch method within islands are the most important variables for maximizing the benefits of the available DERs.…”

Section: Introductionmentioning

confidence: 99%

Integrated approach for optimal island partition and power dispatch

Zhu

Jiang

et al. 2017

J. Mod. Power Syst. Clean Energy

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Operating in island mode when failure occurs in the active distribution network(ADN) is an effective measure to maintain an uninterrupted power supply to significant loads. A two-stage approach that integrates optimal island partition and power dispatch is proposed in this paper, considering photovoltaics (PVs), batteries (BEs) and electric vehicles (EVs) as the power sources. In the first stage, energy indices are defined to describe the energy demand and the maximum energy that these distributed energy resources (DERs) can provide, and islands are partitioned based on an energy constraint. Considering the variability the loads and PVs, the energy constraint is a necessary but not sufficient condition for island operation, so in the second stage, a power dispatch model is proposed as a test for the island partition result. Sequential power flow is also simulated to guarantee a feasible and optimized island status. The situations when the tests are not passed are analyzed and classified, and corresponding modifications for the first stage model are provided. Multiple levels of constraints based on the energy index are established for the island partition model. The proposed approach has been validated through simulation using a modified IEEE 69-bus system which is divided into three districts with different load variability characteristics.

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“…An adaptive protection scheme was proposed in [13,14] for distribution systems with a high penetration of DG by dividing the system into zones with a reasonable load-generation balance. The idea of dividing the system into zones constitutes the basis for a new approach towards protection and islanding.…”

Section: Introductionmentioning

confidence: 99%

Central coordination relay for distribution systems with distributed generation

Nuroğlu

Arsoy²

2015

Turk J Elec Eng & Comp Sci

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Abstract:As distributed generation resources penetrate into distribution systems, protection and service continuity are becoming major issues. A new approach for protection coordination and higher reliability of a distribution system with distributed generation is explored in this paper. The concept of central coordination relay (CCR) is developed for this purpose. After a brief introduction of the design and operating procedures of CCR, the utilization of the proposed relay on two feeders of a substation in the Kocaeli region of Turkey is simulated using DIgSILENT PowerFactory. The study results show that CCR can provide better protection coordination and improved reliability indices for distributed generation systems.

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Feasibility of adaptive intentional islanding operation of electric utility systems with distributed generation

Cited by 63 publications

References 10 publications

Island partition of the distribution system with distributed generation

Island partition of the distribution system with distributed generation

Integrated approach for optimal island partition and power dispatch

Central coordination relay for distribution systems with distributed generation

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