Intentional Islanding Algorithm for Distribution Network Based on Layered Directed Tree Model

Su, Jian; Bai, Hao; Zhang, Pipei; Liu, Haitao; Miao, Shihong

doi:10.3390/en9030124

Cited by 5 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors of [13] presented a method for partitioning the distribution system isolated, but they have not addressed the possibility of simultaneous faults in their proposed method. Papers [14]- [17], due to the complexity of the island partitioning problem, have solved it as two sub-problems.…”

Section: Hosted Filementioning

confidence: 99%

Island partitioning of smart distribution systems in emergency situations considering voltage and frequency stability

Najafabadi

Foroud

2023

Preprint

View full text Add to dashboard Cite

Island partitioning is a solution to restore service in smart distribution systems after the disconnection of the main grid due to faults. A two-stage and multi-objective solution is presented to restore the services of the island system. At first stage, the proposed partitioning scheme is presented with regards to the available time to decide on control measures, considering the voltage stability and the priority and controllability of the loads in the load shedding, and considering the frequency response and the voltage stability margin in finding the borders of the partitions. In the second stage, optimal power flow is done to set the partitions and satisfy the system operational constraints. The results show the proposed method not only leads to the creation of partitions with the allowable bus voltage and frequency but also leads to the lowest losses, the largest amount of restored load, and supplying loads with the highest values. Moreover, proposed method is more comprehensive due to considering voltage stability, frequency stability, occurrence of simultaneous faults, existence of controllable and uncontrollable distributed generation, power reserve, controllability of loads and DGs, position of switches, maximum time available to make decisions about control measures and the time delay between control measures

show abstract

Section: Hosted Filementioning

confidence: 99%

Island partitioning of smart distribution systems in emergency situations considering voltage and frequency stability

Najafabadi

Foroud

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…• For the solution that is a member of set N A : reduce output of controllable DGs which have higher operating cost until power equilibrium is achieved if the total partition generation is greater than the total load of partition. • For the solution that is a member of set N B : perform load shedding by MILP programming with the objective function (15) and constraints ( 16)-( 18) if the total partition load is greater than the total partition generation. • Calculate the frequency response of the partition with Equations ( 1)-( 2) and ( 4)-( 8) and (19) • Check the frequency constraints • Dismiss the solution by discrediting the corresponding fitness function of the solution in case of frequency constraints violation Calculate quantity of the fitness function:…”

Section: Island Partitioning Based On Black Widow Optimization Algorithmmentioning

confidence: 99%

“…An islanding algorithm should consider the controllability of load and distributed generation, the convenience of the power restoration, maximizing the restoration of high priority loads, and minimizing losses. 15 Accordingly, Refs. 15, 16 proposed a method for the intentional islanding of a system that is separated from the upstream network, but they did not consider the occurrence of simultaneous faults.…”

mentioning

confidence: 99%

Island partitioning of smart distribution systems under emergency conditions considering frequency stability

Najafabadi

Foroud

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Island partitioning is an interesting solution for service restoration in the emergency operation of the smart distribution system. Since rapid decisionmaking is required in an emergency condition, the island partitioning without regard to the time allowed for the implementation of control actions may lead to the violation of the allowable frequency limits and the activation of frequency relays. Therefore, this paper presents a two-stage solution procedure to restore the smart distribution system in emergency condition considering the frequency stability, operational constraints, the position of switches, the load priority and controllability, the controllable and uncontrollable distributed generations, and the time delay in implementation of control actions. In the first stage, considering the frequency stability, the time interval for the implementation of control actions is determined. Then, considering this time interval, the load/generation changes and the boundaries of the partitions are determined, using the partitioning algorithm based on black widow optimization, in order to maximize the value of the restored loads/ minimize the operational cost of DGs. In the second stage, the formed partitions are adjusted to satisfy the operating constraints of the system. Applying the proposed method to the PG&E 69-bus test system, considering different scenarios, and comparing the proposed method with the previous methods show the efficiency of the proposed method.

show abstract

“…Optimal islanding strategies using DGs and micro-resources for service restoration are proposed in [60][61][62][63][64]. Methods, such as branch and bound [61], weighted graph [62], and layered directed tree model [63], are investigated to determine the islanding range.…”

Section: Service Restoration Algorithmsmentioning

confidence: 99%

Smart Distribution Systems

Jiang

Liu

2016

Energies

View full text Add to dashboard Cite

Abstract:The increasing importance of system reliability and resilience is changing the way distribution systems are planned and operated. To achieve a distribution system self-healing against power outages, emerging technologies and devices, such as remote-controlled switches (RCSs) and smart meters, are being deployed. The higher level of automation is transforming traditional distribution systems into the smart distribution systems (SDSs) of the future. The availability of data and remote control capability in SDSs provides distribution operators with an opportunity to optimize system operation and control. In this paper, the development of SDSs and resulting benefits of enhanced system capabilities are discussed. A comprehensive survey is conducted on the state-of-the-art applications of RCSs and smart meters in SDSs. Specifically, a new method, called Temporal Causal Diagram (TCD), is used to incorporate outage notifications from smart meters for enhanced outage management. To fully utilize the fast operation of RCSs, the spanning tree search algorithm is used to develop service restoration strategies. Optimal placement of RCSs and the resulting enhancement of system reliability are discussed. Distribution system resilience with respect to extreme events is presented. Test cases are used to demonstrate the benefit of SDSs. Active management of distributed generators (DGs) is introduced. Future research in a smart distribution environment is proposed.

show abstract

Intentional Islanding Algorithm for Distribution Network Based on Layered Directed Tree Model

Cited by 5 publications

References 20 publications

Island partitioning of smart distribution systems in emergency situations considering voltage and frequency stability

Island partitioning of smart distribution systems in emergency situations considering voltage and frequency stability

Island partitioning of smart distribution systems under emergency conditions considering frequency stability

Smart Distribution Systems

Contact Info

Product

Resources

About