Electric Power Systems

Monti, Antonello; Ponci, Ferdinanda

doi:10.1007/978-3-662-44160-2_2

Cited by 13 publications

(8 citation statements)

References 21 publications

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“…Secure and economical operation of power systems is becoming difficult to achieve due to increased occurrences of power system disturbances as a result of the intrinsic and extrinsic changing nature of the electricity industry . Hence, optimal planning of power systems operation is crucial for the safe and cost‐effective operation of large interconnected power systems, especially at the transmission and subtransmission level, due to the complex and increasingly dynamic nature of electricity networks . The complexity of grid operation is further increased by the liberal and competitive structure of the modern electricity markets.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 Hence, optimal planning of power systems operation is crucial for the safe and cost-effective operation of large interconnected power systems, especially at the transmission and subtransmission level, due to the complex and increasingly dynamic nature of electricity networks. 3 The complexity of grid operation is further increased by the liberal and competitive structure of the modern electricity markets. The continuous quest for modernization and economic growth is the chief driver for the recent industrialization efforts of several countries, and this has also contributed to the essentiality of optimal planning of power system operation.…”

Section: Introductionmentioning

confidence: 99%

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Comparative analysis of a new VSC‐optimal power flow formulation for power system security planning

Adewuyi

Howlader

Olaniyi

et al. 2020

Int Trans Electr Energ Syst

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Summary The performance of a new approach for multiobjective voltage stability constrained‐optimal power flow (VSC‐OPF) formulation is compared with a conventional VSC‐OPF approach for improving the steady‐state power systems security in this paper. The compared OPF problems involve the minimization of the fuel cost and minimization of novel line stability index (NLSI) for case 1 and minimization of fuel cost and maximization of line static stability margin (CBI) for the proposed case 2. Clerc's constricted PSO algorithm modified with the nondominated sorting algorithm is used for obtaining the best solution point for each of the decision variables. Network security constraints and bus voltage limits are considered along with the constraint on permissible line stability margin limit adopting the quadratic penalty model for constraints violations. The approach is tested on a load‐modified IEEE 30‐bus and actual Nigerian 28‐bus systems. From the results obtained, the proposed OPF formulation performed better for simultaneous consideration of voltage stability improvement and line loss reduction.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative analysis of a new VSC‐optimal power flow formulation for power system security planning

Adewuyi

Howlader

Olaniyi

et al. 2020

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…Hence in recent time, the need for adequate planning and scheduling of large interconnected power system is increasingly becoming intense due to the need for better returns on investment for energy investors and quality service delivery to customers [2]. The dynamism of the electricity network makes it one of the most complex machine to operate despite the increasing sophistication of the power system monitoring and control technologies [3]. The scope of electricity market interactions has increased; it is no longer a monopolistic/one way dealings of a sole power producer/supplier or a group of power producers working for the common self-interest of profit maximization at the expense of the less fortunate downstream market participants.…”

Section: Introductionmentioning

confidence: 99%

Voltage Security-Constrained Optimal Generation Rescheduling for Available Transfer Capacity Enhancement in Deregulated Electricity Markets

et al. 2019

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Modern utilities are forced to operate very close to their loadable limits (maximum capacity) due to geographical, economical and some technical reasons. The deregulation of the power industry, the competitive nature of modern electricity markets and the continuous quest for modernization of cities and hamlets all over the world has also led to fast increase in the load demand. The stability of power systems all over the world are threatened with recurrent occurrences of voltage stability issues. Hence, Inter-zonal energy transactions between willing supplier and buyers need to be done with adequate consideration for power system security. In this work, a voltage security-constrained optimal generator active and reactive power rescheduling is carried out using the IEEE 30 and IEEE 57 bus systems. The simultaneous maximization of available transfer capacity (ATC) and voltage stability margin (VSM), using the weighted sum approach, is the objective function. Credible optimal power flow and power system security constraints are considered. Three variants of particle swarm optimization in MATLAB® are used in this work for analyzing the results for objectivity. The technical and economic benefits of the optimal generator rescheduling on the system’s ATC, VSM, line losses, line flow and voltage profile are adequately analyzed.

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“…The usage of an ICT layer offers improved exploitation of the CI and increases the performance of the system while reducing the overall cost. The main objectives of such a control structure are: (1) to maintain safe operational goals by limiting the probability of undesirable behavior, (2) to meet the production demands by keeping certain process values within prescribed limits, and (3) to maximize production profit.…”

Section: Introductionmentioning

confidence: 99%

“…In general, any offensive tactic/action against information systems, infrastructures, computer networks conducted by individuals or whole organizations can be considered as a cyber-attack. The purpose of this malicious act can vary and usually includes stealing, falsification, or even destruction of information and/or system components [1,2]. Integrity attacks are the ones which alter the data transmitted within the infrastructure serving the attacker's purposes while remaining undetected.…”

Section: Introductionmentioning

confidence: 99%

Detection of Integrity Attacks in Cyper Physical Systems Based On Reservoir Networks

Ntalampiras

Soupionis²

2015

Proceedings of 2nd International Electronic Conference on Entropy and Its Applications

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This paper presents an anomaly-based methodology for reliable detection of integrity attacks in cyber-physical critical infrastructures. Such malicious events compromise the smooth operation of the infrastructure while the attacker is able to exploit the respective resources according to his/her purposes. Even though the operator may not understand the attack, since the overall system appears to remain in a steady state, the consequences may be of catastrophic nature with a huge negative impact. Here, we apply a deep learning technique and more specifically reservoir networks. They follow the supervised learning principle for recurrent neural networks, while the fundamental logic is to steer a random, large, fixed recurrent neural network with the input signal to the desired direction (class, probability, etc.). Their great advantage is the fact that the only part in need of training is the output layer which is a linear combination of all of the response signals. The experimental platform includes a simulator of both a power grid and a cyber-network of the IEEE-9 bus model. Subsequently we implemented a wide range of integrity attacks (replay, ramp, pulse, scaling, and random) with different intensity levels. A thorough evaluation procedure is carried out while the results demonstrate the detection capabilities of the proposed method in terms of false positive rate, false negative rate and detection delay.

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Electric Power Systems

Cited by 13 publications

References 21 publications

Comparative analysis of a new VSC‐optimal power flow formulation for power system security planning

Comparative analysis of a new VSC‐optimal power flow formulation for power system security planning

Voltage Security-Constrained Optimal Generation Rescheduling for Available Transfer Capacity Enhancement in Deregulated Electricity Markets

Detection of Integrity Attacks in Cyper Physical Systems Based On Reservoir Networks

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