Coordinated Control of Distributed Energy Resources and Conventional Power Plants for Frequency Control of Power Systems

Ghafouri, Alireza; Milimonfared, Jafar; Gharehpetian, Gevork B.

doi:10.1109/tsg.2014.2336793

Cited by 60 publications

(17 citation statements)

References 37 publications

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“…System control using multiple agents may enable each component or energy source to communicate with each other and securely manage the network [45], [46]. In [46], a multiagent microgrid control system that adjusts the droop characteristics of each controller depending on the availability and state of charge of the other connected sources is presented.…”

Section: Islanded Operationmentioning

confidence: 99%

“…In [46], a multiagent microgrid control system that adjusts the droop characteristics of each controller depending on the availability and state of charge of the other connected sources is presented. Multiple agents may not communicate with VSCs in the time frames required to enable frequency response, but could be used to provide more optimal coordinated control between VSCs over longer timescales, perhaps through appropriate gain scheduling.…”

Section: Islanded Operationmentioning

confidence: 99%

See 1 more Smart Citation

VSC-HVDC for Frequency Support (a review)

Fradley

Preece²,

Barnes³

2017

13th IET International Conference on AC and DC Power Transmission (ACDC 2017)

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To reduce CO2 emissions produced by electricity generation, conventional fossil fuel power plants are being decommissioned. Renewable energy sources (RES) and interconnectors are replacing these old power plants but have different operating characteristics. A key concern as the conventional fossil fuel power plants are displaced is the reduction in system inertia. A reduction in system inertia will require faster control schemes to be implemented to prevent frequency and rate of change of frequency (ROCOF) limits from being exceeded. Frequency response schemes that can emulate inertia, often called synthetic inertia, are required and this will necessitate the need for fast controlled devices. VSC-HVDC is a desirable interface option for the power levels and controllability required to provide synthetic inertia. This paper reviews supplementary frequency control schemes applied to VSC-HVDC and co-ordinated control strategies applicable to HVDC connected systems and islanded systems.

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Section: Islanded Operationmentioning

confidence: 99%

Section: Islanded Operationmentioning

confidence: 99%

VSC-HVDC for Frequency Support (a review)

Fradley

Preece²,

Barnes³

2017

13th IET International Conference on AC and DC Power Transmission (ACDC 2017)

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“…The literature on the management of DERs considering day-ahead, hour-ahead and real-time scheduling processes has been growing over the last few years [5]. This includes a number of studies on day-ahead scheduling for DERs with impact on operation costs [10][11][12][13], optimal bidding [13], load shedding [10], carbon emissions [10,14], EVs with vehicle-to-grid ability [15,16], losses reduction [17] and service restoration [18], as well as ancillary services management [19,20], among others. An integrated day-ahead and hour-ahead (intraday) schedule for dealing with DERs uncertainty [21], maximizing the retailer's profit under carbon emissions penalties [22], DERs scheduling with recourse to stochastic programming [23] and control strategies [24] has been studied.…”

Section: Literature Review and Specific Contributionsmentioning

confidence: 99%

“…In [25], a simulator for hour-ahead and real-time scheduling of DERs is proposed, considering the minimization of operation costs. Furthermore, real-time adjustments of DERs taking into account the operation costs [26,27], DERs profit [28], ancillary services [19,[29][30][31] and control strategies [24] are crucial to maintain the system balance. Integrated tools for simulation of DERs energy scheduling under day, hour-ahead and real-time has been developed, minimizing the operation costs [32].…”

Section: Literature Review and Specific Contributionsmentioning

confidence: 99%

Energy and Reserve under Distributed Energy Resources Management—Day-Ahead, Hour-Ahead and Real-Time

et al. 2017

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Abstract:The increasing penetration of distributed energy resources based on renewable energy sources in distribution systems leads to a more complex management of power systems. Consequently, ancillary services become even more important to maintain the system security and reliability. This paper proposes and evaluates a generic model for day-ahead, intraday (hour-ahead) and real-time scheduling, considering the joint optimization of energy and reserve in the scope of the virtual power player concept. The model aims to minimize the operation costs in the point of view of one aggregator agent taking into account the balance of the distribution system. For each scheduling stage, previous scheduling results and updated forecasts are considered. An illustrative test case of a distribution network with 33 buses, considering a large penetration of distribution energy resources allows demonstrating the benefits of the proposed model.

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“…The associate editor coordinating the review of this manuscript and approving it for publication was Lei Chen . improve the power system inertia [5]- [7]. Therefore, the power system inertia, as well as its quantification, not only decrease but also become time-varying [8].…”

Section: Introductionmentioning

confidence: 99%

Online Estimation of Power System Inertia Constant Under Normal Operating Conditions

et al. 2020

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An online estimation method for the power system inertia constant under normal operating conditions is proposed. First of all, a dynamic model relating the active power to the bus frequency at the generation node is identified in the frequency domain using ambient data measured with the phasor measurement units (PMUs). Then, the inertia constant at the generation node is extracted from the unit step response of the identified model in the time domain using the swing equation. Finally, with the sliding window method and the exponential smoothing method, the estimated inertia constant is updated in real-time. Compared to the conventional methods using large disturbance data or field test data, the proposed method can estimate the inertia constant under normal operating conditions, and therefore, can provide the tracking trajectory of the power system inertia constant in real-time. The effectiveness of the proposed method is validated in the IEEE 39-bus system. The results show that the relative error of the identified inertia constant is below 5% and the identified inertia constant can be updated within 1s.

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Coordinated Control of Distributed Energy Resources and Conventional Power Plants for Frequency Control of Power Systems

Cited by 60 publications

References 37 publications

VSC-HVDC for Frequency Support (a review)

VSC-HVDC for Frequency Support (a review)

Energy and Reserve under Distributed Energy Resources Management—Day-Ahead, Hour-Ahead and Real-Time

Online Estimation of Power System Inertia Constant Under Normal Operating Conditions

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