Power system restoration issues

Adibi, M. M.; Kafka, R.J.

doi:10.1109/67.75871

Cited by 121 publications

(66 citation statements)

References 4 publications

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“…Its advantage is that the status of the CB is well defined when the restoration starts. An alternative strategy is to open only selected CB's, this strategy is known as "controlled operation" strategy, [5], [6]. Whichever strategy chosen, when rebuilding the power system it is desirable to have reliable restoration sequence.…”

Section: Notationmentioning

confidence: 99%

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On uncontrolled system separation in power system restoration

Edstrom

Söder

2011

2011 North American Power Symposium

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Abstract-Since extended power outages causes severe stress on society and the restoration following a black out is a complex and time consuming task, efficient restoration strategies are needed. During the restoration, the power system undergoes continual changes and therefore it is subject to desired and undesired operations and failures which might be devastating. The main contribution of this paper is a new method to estimate the risk of an uncontrolled system separation in case of a loss of a transmission line or a transformer during a restoration process. The method in this paper assigns failure rates to the transformers and the transmission lines. Further, a graph theoretical method are used to find probability bounds for an uncontrolled system separation for a whole restoration sequence. In a numerical example are three restoration strategies applied to an IEEE 14 bus test system and evaluated. It is shown in the numerical example that the restoration strategy has an high impact on the probability for a system separation.

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Section: Notationmentioning

confidence: 99%

“…1 and [11]. It is further assumed that all CB are open in accordance to the all open strategy in [5] and [6]. An operator has hence to decide in which order to energize the transmission lines and the substations.…”

Section: Computational Complexitymentioning

confidence: 99%

On uncontrolled system separation in power system restoration

Edstrom

Söder

2011

2011 North American Power Symposium

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“…When the loss of the power system integrity is inevitable, splitting strategies are carried out to separate the system into smaller subsystems, also known as islands. The controlled islanding solution needs to determine the proper splitting points so that the formed islands can ensure a secure supply of the demand by stabilized local generators while maintaining generator coherencies and other static and dynamic constraints [2], [3].…”

Section: Introductionmentioning

confidence: 99%

System splitting strategy considering power system restoration

Demetriou

Kyriacou

Kyriakides

et al. 2017

2017 IEEE Manchester PowerTech

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Abstract-An Intentional Controlled Islanding (ICI) algorithm based on an exact Mixed Integer Programming Formulation (MILP) was previously proposed and tested using IEEE test systems. The proposed algorithm directly determines an islanding solution with minimal power-flow disruption for any given number of islands, while ensuring that each island contains only coherent generators. However, since one or more of the created islands might reach a local blackout after the splitting strategy is carried out, the aforementioned algorithm is extended to consider power system restoration constraints. Considering that data collection is essential to properly run a restoration process and assuming a completely observable power system at normal operating conditions, the extended ICI algorithm creates islands that are also completely observable, includes at least one blackstart unit within each island, and guarantees sufficient generation capacity to match the load consumption within each island. These new constraints can be viewed as a power system restoration planning stage.

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“…If the operator is experienced the time it takes to take decision during the restoration process might be less then for a novice operator. Analysis and discussions of the power system restoration process is given in [1], [3], [5], [6] and [7]. In [8] has the consequences of a loss of power supply in the substation been discussed and identified as a risk that could delay the restoration process.…”

Section: Introductionmentioning

confidence: 99%

Impact of remote control failure on power system restoration time

Edstrom

Söder

2010

2010 IEEE 11th International Conference on Probabilistic Methods Applied to Power Systems

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Abstract-Extended blackouts are rare events but when they occur they cause severe stress on the society. After a blackout it is important to have a efficient restoration strategy and to be aware of the risks that could extend the restoration process. One important risk during the restoration process after a blackout is the dependence of limited back up power at substations. The back up power is needed to control circuit breakers and for communication equipment. If the outage time is extensive the back up power might run out and the ability to control the circuit breakers is lost and this will extend the restoration time even further. In this paper a stochastic model of the restoration process of a power system with several substations with an uncertain backup power is presented. The model uses a Monte Carlo simulation to identify the impact of remote control failure on power system restoration time.

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Power system restoration issues

Cited by 121 publications

References 4 publications

On uncontrolled system separation in power system restoration

On uncontrolled system separation in power system restoration

System splitting strategy considering power system restoration

Impact of remote control failure on power system restoration time

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