Stochastic security-constrained optimal power flow for a microgrid considering tie-line switching

Liu, Daichen; Zhang, Cuo; Chen, Guo; Xu, Yan; Zhang, Dong

doi:10.1016/j.ijepes.2021.107357

Cited by 19 publications

(8 citation statements)

References 22 publications

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“…Some of these methods include Bender's decomposition [39]- [44], genetic algorithms [45], branch-and-bound (B&B) [9], semi-definite programming [46], line ranking [47], interior point search algorithms [48], particle swarm optimization [24], [49], and cutting-plane methods [50], [51]. Stochastic optimization [52], [53], and robust optimization [54]- [57] are widely used approaches to address the uncertain variables in the OTS problem combined with RES.…”

Section: Figure 1 Applications Of Transmission Switching In Literaturementioning

confidence: 99%

“…This model is based on DCOPF, however, AC-OPF formulation is also possible with the expense of computational complexity. The objective function and constraints of the bilevel model are presented in equations ( 49)- (53).…”

Section: G Bilevel Model For Otsmentioning

confidence: 99%

“…and equations ( 12)-( 18). 49) and (50), while inner optimization is governed by equations ( 51) - (53). The line flows are restricted by the constraints of bus voltage angles and line operating status in (52).…”

Section: G Bilevel Model For Otsmentioning

confidence: 99%

“…The line flows are restricted by the constraints of bus voltage angles and line operating status in (52). Power balance equation is given by the constraint (53). Rest of the constraints on generation and voltage limits are similar to the basic OTS model.…”

Section: G Bilevel Model For Otsmentioning

confidence: 99%

See 3 more Smart Citations

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: Figure 1 Applications Of Transmission Switching In Literaturementioning

confidence: 99%

Section: G Bilevel Model For Otsmentioning

confidence: 99%

Section: G Bilevel Model For Otsmentioning

confidence: 99%

Section: G Bilevel Model For Otsmentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2023

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“…To this end and to simplify the equations, the paper utilized a linear power flow model along with the adoption of a backward–forward sweep algorithm. More details about operating cost minimization and optimization of microturbines and load shedding can be found in [8], where the Benders decomposition method was also used to reformulate the problem. Ref.…”

Section: Introductionmentioning

confidence: 99%

Network‐constrained unit commitment‐based virtual power plant model in the day‐ahead market according to energy management strategy

Pirouzi

2023

IET Generation Trans & Dist

105

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Energy management of a virtual power plant (VPP) that consists of wind farm (WF), energy storage systems and a demand response program is discussed in the present study. The introduced strategy is realized at the electrical power transmission level and takes into account the collaboration between VPPs in day‐ahead energy and reserve markets. One notable feature of the proposed strategy is attempting to make the revenue of VPPs close to the operating cost of generating units as much as possible. The objective function is subjected to the network‐constrained unit commitment model, up and down reserve requirements and the proposed VPP constraints. This method is taking into account the uncertainty in system and VPP loads, day‐ahead market energy and reserve price and WF power generation. This strategy is applied as hybrid stochastic‐robust scheduling to the VPP at the electrical power transmission level, where the scenario‐based stochastic programming models the uncertainty of day‐ahead market prices, and the bounded uncertainty‐based robust optimization has been adopted to model the uncertainties related to the load and WF power. Scheme has been tested on IEEE systems. According to the obtained results, the proposed coordination of VPPs in the mentioned markets demonstrates capability of suggested strategy.

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Security constrained optimal power flow solution for practical transmission grid using hybrid use of generating plant and network restructuring

Singh,

Sharma,

Garg

et al. 2024

Discov Appl Sci

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This paper presented a study on the security constrained optimal power flow (SCOPF) of a practical transmission utility grid network (TUGN). The objectives of reduction in the transmission losses of TUGN (TLGN) and to minimize the bus voltage deviations (BVD) are achieved by addition of thermal power plant (TPP) and network restructuring (NR). Identification of best fit node for generation injection is achieved using the method based on hybrid combination of analytic approach and genetic algorithm (GA). Efficacy of the proposed study is evaluated using the computation of energy equivalent to network loss saving, percentage derating of the load (PDOL), voltage profile, bus voltage deviations, and financial analysis (FA). Study is performed without and with contingency (N-1) for the base case network, TUGN with addition of TPP and TUGN with addition of TPP and NR. This is established that addition of TPP, addition of TPP with NR are effective to reduce the TLGN, improve the voltage profile and minimize the bus voltage deviations. This study is more efficient compared to various studies reported in literature.

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Stochastic security-constrained optimal power flow for a microgrid considering tie-line switching

Cited by 19 publications

References 22 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

Network‐constrained unit commitment‐based virtual power plant model in the day‐ahead market according to energy management strategy

Security constrained optimal power flow solution for practical transmission grid using hybrid use of generating plant and network restructuring

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