Resilience of Finnish electricity distribution networks against extreme weather conditions

Forssén, Kim; Mäki, Kari

doi:10.1049/cp.2016.0705

Cited by 10 publications

(6 citation statements)

References 1 publication

(1 reference statement)

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“…According to the review of study, it can be seen that in some papers related to resilience [4][5][6][7][8][9][10][11][12][13][14], the effect of automation implementation in distribution networks, especially in distribution grid switches, has not been investigated. Some other studies [15][16][17][18][19][20][21][22][23][24][25][26][27] have considered the effect of automation of distribution system switches in solving the problem of assessing the resilience of the distribution network.…”

Section: Discussion and Contributionsmentioning

confidence: 99%

“…In [5], the Italian regulatory organization has forced electricity distribution and transmission companies to provide practical solutions and extend models to improve the resilience of the electric grid against extreme snowstorms, windstorms, tree fall and heat waves. In [6], methods and technologies including increased cabling rate, introduction of microgrids and energy storages, increased utilization of emergency power systems, and smart grid technologies are presented to improve the resilience of the distribution network during different phases of a destructive weather event. In [7], a framework is presented for measuring and systematically assessing the resilience of power grids, focusing on performance as perceived by customers at the power distribution level.…”

Section: Related Workmentioning

confidence: 99%

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Improving the resilience of the distribution system using the automation of network switches

Hassanzadeh

Hajiabadi

Samadi

et al. 2023

The Journal of Engineering

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In studies of power systems, reliability issues are not fully responsive to the assessment of the distribution network in the face of natural disasters, and studies called the resilience of distribution network are needed. Distribution network resilience studies examine the impact of large incidents with high damaging power but low repetition on the power grid, which cause a lot of damage and costs. In this study, the effect of distribution network switches automation on improving the resilience of distribution networks in the event of large faults and failures has been investigated. In this approach, first the location of the incident and the probability of the percentage of destruction of the incident site are predicted, then in different scenarios, the numbers, locations, and types of switches (remote control or manoeuvre switches) are defined and in the next step, the system reliability and resilience indicators are evaluated, and then, the system resilience diagram is examined in each scenario, and at each stage, the cost-benefit analysis is performed to evaluate the cost function. Here, the cost includes the cost of purchasing and installing switches, and benefits include costs of reliability and resilience, which ultimately significantly reduce the objective function. The proposed method is implemented on a part of the standard RBTS system.

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Section: Discussion and Contributionsmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Improving the resilience of the distribution system using the automation of network switches

Hassanzadeh

Hajiabadi

Samadi

et al. 2023

The Journal of Engineering

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“…A meshed operation of a network consists on more than one feeder supplying the load, and therefore continuity of supply is more probable than in radial operation. Moreover, in an UPS where the majority of the lines are underground and hence the reparation of a possible failure is more complex, meshing the network can also be seen as a preventive measure [13]. Continuity of supply is also enhanced by placing DER units in a UPS since spatial diversification of generation reduces the stress of network components and the designed peak power.…”

Section: Fig 1 Resilience Curve Concept [12]mentioning

confidence: 99%

Towards more resilient electrical networks in urban areas

2018

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The requirement of system decarbonisation fixed by the EU 2050 plan is leading to an increased establishment of renewable energy sources. Additionally, the emergence of power electronics and ICT technologies has played a decisive role towards a novel distribution electric grid allowing new monitoring, operation and control. In parallel to the energetic transition, an increasing occurrence of extreme weather events and a reinforced concern on climate change leads to the concept of resilience, which is the capacity to adapt and recover from disruptive events in a coordinated procedure. After a fault event, assuming the objective of the system operator is to minimize the load unsupplied, the present study aims at outlining an early research state on the concept of self-healing through the development of a power flow optimization algorithm within a meshed network. Moreover, the effects of integrating Distributed Energy Resources (DER) in order to increase distribution grid resilience as well as to ensure and secure power supply to the system leads to the clusterization of the power system. With controllable technologies, the on-outaged areas are able to disconnect from the main grid, creating islanded microgrids (MGs) which can work autonomously and consequently, increase grid resilience.

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“…Finally, column 1 of Table 2 (the substation progressive number #), which refers to the NUD ranking shown in Table 1, is reported in order to compare the two different sorting strategies. Additional indices, evaluated in accordance with Equations (5), (6), and (7), are reported in Table 3. They provide the comparison between ex-ante and ex-post status of network.…”

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confidence: 99%

Assessment and Possible Solution to Increase Resilience: Flooding Threats in Terni Distribution Grid

et al. 2019

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In recent years, because of increasing frequency and magnitude of extreme weather events, the main stakeholders of electric power systems are emphasizing issues about resilience. Whenever networks are designed and development plans are drawn, this new feature must be assessed and implemented. In this paper, a procedure to evaluate the resilience of a distribution network against flooding threats is presented. Starting from a detailed analysis about the resilience of each asset of the grid, the procedure implements the exploration of the network in order to evaluate the impact of interruptions (e.g., in terms of number of disconnected users) produced by the specific threat; then, it calculates the resilience indices of the whole system. The procedure is applied with respect to the flooding threats, on a real distribution network in the center of Italy (i.e., the distribution network of Terni). Referring to this case study, the proposed method suggests countermeasures able to reduce the impact of flooding events and evaluates their benefits. Results indicate that, at the present time, the network is adequately resilient with respect to flooding events, as demonstrated by the index values. However, the remedial actions identified by the procedure are also able to improve the resilience of the network and, in addition, they are in agreement with the development plan already established by the distribution system operator (DSO).

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Resilience of Finnish electricity distribution networks against extreme weather conditions

Abstract: Extreme weather conditions threaten Finnish electricity distribution networks that are mostly built as overhead lines. This paper presents selected methods and technologies that can be taken to improve the networks' resilience during different phases of a disruptive event.

Cited by 10 publications

References 1 publication

Improving the resilience of the distribution system using the automation of network switches

Improving the resilience of the distribution system using the automation of network switches

Towards more resilient electrical networks in urban areas

Assessment and Possible Solution to Increase Resilience: Flooding Threats in Terni Distribution Grid

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