Generalized Systematic Approach to Assess Distribution System Reliability With Renewable Distributed Generators and Microgrids

Conti, S.; Nicolosi, R.; Rizzo, Santi Agatino

doi:10.1109/tpwrd.2011.2172641

Cited by 98 publications

(89 citation statements)

References 20 publications

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“…The load and generation models were combined in [5] to assess the PoA of an island j. Assuming that there are L j loads, R j RDGs, and C j CDGs in the considered island, the number M j of combinations depends on the number of levels in each load model, as well as in the generation model of each DG.…”

Section: Analytical Assessment Of the Probability Of Adequacy (Poa)mentioning

confidence: 99%

Effect of Islanding and Telecontrolled Switches on Distribution System Reliability Considering Load and Green-Energy Fluctuations

et al. 2016

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Abstract:To improve electrical distribution network reliability, some portions of the network could operate in autonomous mode, provided that the related technical issues are addressed. More specifically, when there is not a path from those portions to the primary substation due to a fault in the network, such portions could be disconnected from the main network and supplied by local generation only. Such a mode of operation is known as "intentional islanding" and its effectiveness, in terms of adequacy, depends on the ability of the local generation to meet the island's load. In fact, the ratio between the available local generation and load demand can frequently change during islanding due to load variations and, especially, due to the strongly irregular behavior of the primary energy sources of renewable generators. This paper proposes an analytical formulation to assess local generation adequacy during intentional islanding, accounting for the aforementioned variations. More specifically, the fluctuations of load and green-energy generators during islanding are modeled by means of Markov chains, whose output quantities are encompassed in the proposed analytical formulation. Such a formulation is used by the analytical equations of load points' outage rate and duration. The evaluation of the reliability indices accounts for a protection scheme based on an appropriate communication infrastructure. Therefore, a brief overview on the telecommunications technologies has been presented with reference to their suitability for the specific application. In particular, distribution network safety issues have been considered as the main concern. The results show that neglecting load and generation fluctuations leads to a strong overestimation of the ability of distributed generators to meet the island load. Through a case study it is observed that the error on the load point outage rate is greater than the one affecting the outage duration.

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Section: Analytical Assessment Of the Probability Of Adequacy (Poa)mentioning

confidence: 99%

Effect of Islanding and Telecontrolled Switches on Distribution System Reliability Considering Load and Green-Energy Fluctuations

et al. 2016

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“…Therefore, traditional distributed generation can be represented by constant power model. Availability rate A is used to reflect generating units' performance [9].…”

Section: Diesel Generatormentioning

confidence: 99%

“…The parameters of lines can be found in the references [13][14]. The availability rate of DG is 0.95 and conversion time is 0.1 h [9]. The operation time for sectionalizer is 2 h.…”

Section: Case Studymentioning

confidence: 99%

Reliability Evaluation of Distribution System Considering Sequential Characteristics of Distributed Generation

Sheng

Meng

Fan

et al. 2016

MATEC Web of Conferences

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Abstract. In allusion to the randomness of output power of distributed generation (DG), a reliability evaluation model based on sequential Monte Carlo simulation (SMCS) for distribution system with DG is proposed. Operating states of the distribution system can be sampled by SMCS in chronological order thus the corresponding output power of DG can be generated. The proposed method has been tested on feeder F4 of IEEE-RBTS Bus 6. The results show that reliability evaluation of distribution system considering the uncertainty of output power of DG can be effectively implemented by SMCS.

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“…Research for the above several algorithms focused on mathematical modeling of the distribution network elements to achieve reliability assessment, and less on the computer implemented method of distribution network reliability especially reliability online calculation studying [5][6][7][8][9][10]. Network equivalent method and minimum path method need the equivalent of the network, while most of the equivalent procedure by computer are complex to achieve.…”

Section: Introductionmentioning

confidence: 99%

Distribution Network Reliability Theoretical Analysis and Assessment Online Considering Load Levels and Power Supply Transferring at Different Period

Huang¹,

Wang²,

Feng³

et al. 2016

Proceedings of the 2nd International Conference on Advances in Mechanical Engineering and Industrial Informatics (AMEII 2016)

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Abstract. The theory calculation of power supply for distribution network often based on grid structure in planning stage. The period of reliability evaluation indexes are mostly one year. The impact of different load levels and periods are rarely considered. Power supply reliability analysis and calculate online considering different load levels, which has important practical significance. This paper did the research for distribution network reliability online calculation using loop search method. Refining the failure rate of power equipment, outage time, outage users and other information to every period. Making average interruption times of customer (AITC), average interruption hours of customer (AIHC) and reliability on service (RS) as indexes. This method successfully applied in distribution network of Shenzhen reliability management system.

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Generalized Systematic Approach to Assess Distribution System Reliability With Renewable Distributed Generators and Microgrids

Cited by 98 publications

References 20 publications

Effect of Islanding and Telecontrolled Switches on Distribution System Reliability Considering Load and Green-Energy Fluctuations

Effect of Islanding and Telecontrolled Switches on Distribution System Reliability Considering Load and Green-Energy Fluctuations

Reliability Evaluation of Distribution System Considering Sequential Characteristics of Distributed Generation

Distribution Network Reliability Theoretical Analysis and Assessment Online Considering Load Levels and Power Supply Transferring at Different Period

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