Stochastic optimal transmission Switching: A novel approach to enhance power grid security margins through vulnerability mitigation under renewables uncertainties

Mohseni‐Bonab, Seyed Masoud; Kamwa, Innocent; Rabiee, Abbas; Chung, C. Y.

doi:10.1016/j.apenergy.2021.117851

Cited by 18 publications

(9 citation statements)

References 40 publications

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“…Additionally, [133] discusses the impact of OTS on a hybrid wind/PV generation, where the AC-OPF model is solved using a combination of a genetic algorithm and a non-linear primal-dual interior point algorithm. Lastly, [134] proposes a stochastic OTS model that considers the uncertainty associated with both wind and PV to minimize grid vulnerability and reduce generation cost. Table 3 summarizes the articles utilizing OTS for improved wind power integration.…”

Section: Ots and Res Integrationmentioning

confidence: 99%

“…The coordinated impact of OTS and DTR are incorporated into power system reliability assessment in [186], where it shown showed that the combination of these two smart grid technologies can improve system reliability, especially for network which have low transmission capacities. To tackle the uncertainties associated with wind/solar and load, [134] proposes a stochastic OTS model to minimize the grid vulnerability. A scenario-reduction technique is adapted which helps reduce the computational complexity of the model.…”

Section: Figure 14 Flowchart For Reliability Evaluation Of Otsmentioning

confidence: 99%

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The Role of Optimal Transmission Switching in Enhancing Grid Flexibility: A Review

et al. 2023

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The integration of variable renewable energy sources (RES) into power grids has resulted in a more complex operating environment for power system operators (SO), necessitating the need for increased grid flexibility. This is crucial for utilities, as the cost-effective utilization of existing infrastructure is necessary, given the prolonged construction period and high investment costs associated with building new power delivery facilities. Under the umbrella of smart grid, optimal transmission switching (OTS) is a cost-effective transmission technology that can alleviate concerns related to network congestion, limited transmission capacity, and high penetration of renewables. OTS is a concept that is integrated into the optimal power flow (OPF) problem such that it provides SO the choice to temporarily switch one or more lines out of service from the network. OTS is shown in the literature to have economic benefits, reduce operational cost, relieve network congestion, serve as a corrective mechanism for reducing voltage violations, improve system reliability, and minimize system loss. Despite the significant attention given to OTS by researchers over the past decade, no extensive review paper exists on the topic in the literature. Therefore, this paper provides a state-of-the-art overview of the OTS problem. The concept of OTS is explained by approximating the alternating current OPF problem into a linear direct current OPF problem. Various alternative models of the OTS problem proposed in the literature are discussed. The paper also analyzes the interaction between OTS and other flexibility options such as Dynamic thermal rating (DTR), Energy storage systems (ESS), and RES. Furthermore, the paper presents the general framework and impact of the short-term OTS problem on long-term expansion planning problems. Finally, an extensive literature review on the impact of OTS on system reliability is provided.

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Section: Ots and Res Integrationmentioning

confidence: 99%

Section: Figure 14 Flowchart For Reliability Evaluation Of Otsmentioning

confidence: 99%

The Role of Optimal Transmission Switching in Enhancing Grid Flexibility: A Review

et al. 2023

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“…To verify the effectiveness of the proposed scheme, system voltage, THD, and line loss before/after DG integration are compared below. Since 95% quantile is used as the limit of the system index in engineering 55 and the average value is used to represent the location where the observations are relatively concentrated, 56 the 95% quantile and the average value of each statistic are selected to describe the computational results in this paper. Figure 9 plots the expectation and 95% quantile of system voltage before/after single DG integration.…”

Section: Case Studymentioning

confidence: 99%

A line loss reduction optimization for renewable energy‐based distribution networks using a probabilistic approach

Jiang,

Han,

et al. 2023

Circuit Theory & Apps

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SummaryThe large integration of distributed generation (DG) and electric vehicles (EVs) facilitates daily life and reduces carbon emissions. However, it brings problems such as increased uncertainty and power electronic permeability to the distribution network. In this context, it is important to solve the line loss optimization problem as closely as possible to the real situation. Therefore, this paper solves the line loss optimization problem based on a probabilistic model of three‐phase unbalanced modern power electrical distribution network. Firstly, the paper proposes a frequency domain model of the distribution network and the optimization problem model. Then, to deal with the uncertainty of the system, the point estimation method (PEM) and Monte Carlo Simulation (MCS) are used. Finally, this paper proposes two optimization schemes considering the power quality when single and multiple DGs are integrated. The simulation results demonstrate that the PEM using the Gram–Charlier series expansion of the fourth‐order statistical moments to estimate the probability density function (PDF) is significantly less time consuming than the traditional MCS method while maintaining accuracy. The comparative analysis reveals that under the optimization scheme with single DG integration, the expected value of system line loss and expected line loss rate are reduced from 283.95 kW to 218.96 kW (22.89% reduction) and from 13.44% to 10.68%, respectively. Under the dual DG integrated optimization scheme, the expected value of line losses and expected line loss rate are reduced from 283.95 kW to 208.88 kW (26.4% reduction) and from 13.44% to 10.25%, respectively. However, after taking the uncertainty into account, the operational reliability of the system has been enhanced under different scenarios. In addition, it is found that the optimization approach incorporating multiple DG units can effectively mitigate the system line loss under diverse operational scenarios while enhancing the system's DG integration capability.

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“…In this path, as the public determination to make maximum use of clean energy sources for energy production is strong, the new plans for developing energy grids include a high level of RERs in the power production sector [46]. Although such plans alleviate the economic and environmental concerns in the energy generation process, they still suffer from the critical challenges for optimal operation of the system due to the intermittences in RERs outputs [47]. The uncontrollable changes in renewables' outputs hinder the secure and reliable operation of the system especially in the cases where the grid is scheduled for supplying a high portion of energy from clean power units [48].…”

Section: Te Applications In the Operation Of Smart Energy Gridsmentioning

confidence: 99%

Transactive energy revolution: Innovative leverage for reliable operation of modern energy networks—A critical review

Kabiri-Renani

Daneshvar

Mohammadi‐Ivatloo

2022

IET Renewable Power Gen

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The electric industry is developing towards a more efficient, reliable, and resilient electric power network. In this way, utilizing distributed energy resources (DERs), especially renewable DERs (RDERs) are a paradigm change. DERs offer many advantages in power systems, including transmission loss reduction, environmental benefits of RDERs, and enhancement of security, reliability, and resiliency of the network. However, high penetration of DERs increases uncertainty and challenges the efficient and reliable operation of the power system. This paper provides a thorough review of the transactive distribution platform which is essential to address the aforementioned challenges. This distribution platform includes a transactive distribution system operator providing a seamless and coordinated control to dynamically balance supply and demand and follow uncertain generations of RDERs. Indeed, this review paper highlights the capability of transactive energy (TE) by considering its key aspect in providing energy sharing opportunities for the integration of DERs into smart grids (SGs). TE is acombination of economic and control methods that enable optimum, reliable, sustainable, and efficient operation of SGs. Furthermore, a fully transactive framework offers more choices for DERs to control and manage the energy transactions in the retail market, as well as improves the inter operability among various market players.

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Stochastic optimal transmission Switching: A novel approach to enhance power grid security margins through vulnerability mitigation under renewables uncertainties

Cited by 18 publications

References 40 publications

The Role of Optimal Transmission Switching in Enhancing Grid Flexibility: A Review

The Role of Optimal Transmission Switching in Enhancing Grid Flexibility: A Review

A line loss reduction optimization for renewable energy‐based distribution networks using a probabilistic approach

Transactive energy revolution: Innovative leverage for reliable operation of modern energy networks—A critical review

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