Towards an enhanced power system sustainability: An MILP under-frequency load shedding scheme considering demand response resources

Rafinia, Ali; Moshtagh, Jamal; Rezaei, Navid

doi:10.1016/j.scs.2020.102168

Cited by 19 publications

(6 citation statements)

References 26 publications

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“…Demand response is considered an effective frequency regulation solution at the load side which can be performed by under frequency load shedding (UFLS) or by the contribution of EVs [143]. UFLS is a process of removing a certain amount of power system load when an outage of large generating unit occurs.…”

Section: Demand Responsementioning

confidence: 99%

“…The proposed de-loading method will reduce the ΔF by 0.321 HZ compared to MPPT operation solution if the power system reserve power is not sufficient for power balancing [8,143,144]. The authors in [144] introduce a criterion for UFLS for power systems which are penetrated with high RESs and integrated with ESSs.…”

Section: Demand Responsementioning

confidence: 99%

“…The parameters of UFLS relay depend on the system ΔF and RoCoF [143]. The role of datacenter in the optimization process of UFLS relay is illustrated in [148].…”

Section: Demand Responsementioning

confidence: 99%

See 2 more Smart Citations

Computational Methods to Mitigate the Effect of High Penetration of Renewable Energy Sources on Power System Frequency Regulation: A Comprehensive Review

El-Bahay

Lotfy

El‐Hameed

2022

Arch Computat Methods Eng

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Depletion of fossil fuel, global warming, and their environmental pollution clarify the importance of renewable energy sources (RESs). However, high penetration of RESs decreases power systems inertia, hence, the system becomes more sensitive to disturbances. This results in problems with frequency control because it increases the rate of change of frequency and may lead to load shedding or tripping of generating units. This paper aims at introducing a comprehensive survey of the effects of the increase in RESs on power system inertia and frequency. Different models of wind-driven and photovoltaic systems used for frequency control studies have been introduced. The up-to-date effective frequency regulation methods which can be used with highly RESs penetrated power systems have been revised and compared. These methods include virtual inertia-based methods depending on energy storage devices, de-loading of renewable energy sources, various inertial response techniques and demand response at load section including under frequency load shedding and electric vehicles. Extensive comparisons among these methods have been carried to guide power system designers, operators, researchers and grid codes taskforces in proper incorporation of RESs for frequency regulation of power systems.

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Section: Demand Responsementioning

confidence: 99%

Section: Demand Responsementioning

confidence: 99%

See 1 more Smart Citation

Computational Methods to Mitigate the Effect of High Penetration of Renewable Energy Sources on Power System Frequency Regulation: A Comprehensive Review

El-Bahay

Lotfy

El‐Hameed

2022

Arch Computat Methods Eng

View full text Add to dashboard Cite

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“…More advanced noncritical load control schemes have also been proposed to mitigate frequency variations during islanding events. For instance, the emergence demand response has been considered in the setting of the under frequency load shedding relays and the design of the load shedding schemes [23]- [26]. Therefore, it is complicated to derive the detailed distribution of ∆P D through either model-based or data-driven approaches at microgrid scheduling stage.…”

Section: Distributionally Robust Chance Constraints Of Frequency Metricsmentioning

confidence: 99%

Frequency-Constrained Resilient Scheduling of Microgrid: A Distributionally Robust Approach

Chu

Zhang

Teng

2021

Preprint

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In order to prevent the potential frequency instability due to the high Power Electronics (PE) penetration under an unintentional islanding event, this paper presents a novel microgrid scheduling model which explicitly models the system frequency dynamics as well as the long/short term uncertainty associated with renewable energy resources and load. Synthetic Inertia (SI) control is applied to regulating the active power output of the Inverter-Based Generators (IBGs) to support the postislanding frequency evaluation. The uncertainty associated with the noncritical load shedding is explicitly modeled based on the distributionally robust formulation to ensure resilient operation during islanding events. The resulted frequency constraints are derived analytically and reformulated into Second-Order Cone (SOC) form, which are further incorporated into the microgrid scheduling model, enabling optimal SI provision of Renewable Energy Sources (RESs) from the micorgrid perspective. With the SOC relaxation of the AC power flow constraints, the overall problem is constructed as a mixed-integer SOC Programming (MISOCP). The effectiveness of the proposed model is demonstrated based on modified IEEE 14-bus system.

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“…In Ahmadi and Rezaei [6], a step-wise demand response program based on demand reduction has been used for cost improvement in isolated microgrids. In reference Rafinia et al [7], demand response resources are considered in the load shedding program. In another attempt Majidi et al [8], demand response is used for improving the cost and emission of energy hub systems.…”

Section: Introductionmentioning

confidence: 99%

Generation Units Maintenance in Combined Heat and Power Integrated Systems Using the Mixed Integer Quadratic Programming Approach

et al. 2020

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Yearly generation maintenance scheduling (GMS) of generation units is important in each system such as combined heat and power (CHP)-based systems to decrease sudden failures and premature degradation of units. Imposing repair costs and reliability deterioration of system are the consequences of ignoring the GMS program. In this regard, this research accomplishes GMS inside CHP-based systems in order to determine the optimal intervals for predetermined maintenance required duration of CHPs and other units. In this paper, cost minimization is targeted, and violation of units’ technical constraints like feasible operation region of CHPs and power/heat demand balances are avoided by considering related constraints. Demand-response-based short-term generation scheduling is accomplished in this paper considering the maintenance intervals obtained in the long-term plan. Numerical simulation is performed and discussed in detail to evaluate the application of the suggested mixed-integer quadratic programming model that implemented in the General Algebraic Modeling System software package for optimization. Numerical simulation is performed to justify the model effectiveness. The results reveal that long-term maintenance scheduling considerably impacts short-term generation scheduling and total operation cost. Additionally, it is found that the demand response is effective from the cost perspective and changes the generation schedule.

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Towards an enhanced power system sustainability: An MILP under-frequency load shedding scheme considering demand response resources

Cited by 19 publications

References 26 publications

Computational Methods to Mitigate the Effect of High Penetration of Renewable Energy Sources on Power System Frequency Regulation: A Comprehensive Review

Computational Methods to Mitigate the Effect of High Penetration of Renewable Energy Sources on Power System Frequency Regulation: A Comprehensive Review

Frequency-Constrained Resilient Scheduling of Microgrid: A Distributionally Robust Approach

Generation Units Maintenance in Combined Heat and Power Integrated Systems Using the Mixed Integer Quadratic Programming Approach

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