Maximum Frequency Deviation Calculation in Small Isolated Power Systems

Egido, Ignacio; Fernandez-Bernal, F.; Centeno, Pablo; Rouco, L.

doi:10.1109/tpwrs.2009.2030399

Cited by 145 publications

(74 citation statements)

References 19 publications

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“…Figure 11a The identified parameters are listed in Table 3. At the same time, the parameters obtained by using the static equivalent (SE) and least square (LS) method proposed in [14] are also listed in Table 3 (The system power base S is the sum of all loads). For thoroughly testing the advantages of the proposed PSO-based parameter identification model, the experimental results in Figure 11 compare the performance of the identified model and the static equivalent model with that of the full scale power system.…”

Section: Identification Parameters Of Simplified Sfr After Islanding mentioning

confidence: 99%

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Optimal System Frequency Response Model and UFLS Schemes for a Small Receiving-End Power System after Islanding

2017

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Large frequency deviations after islanding are exceedingly critical in small receiving-end power systems. The under-frequency load shedding (UFLS) scheme is an efficient protection step for preventing system black outs. It is very important to get an exact model to design the UFLS schemes. In this paper, an optimization model to achieve the system frequency response (SFR) model either from the full-scale power system or from test records was proposed. The optimized SFR model took into account the response of governors-prime movers and the dynamic characteristics of loads developed in the modern power system. Then the UFLS schemes were designed via the optimized SFR model and particle swarm optimization (PSO) method. The time-domain simulation with the actual small receiving-end power system was presented to investigate the validity of the presented model and the developed technique.

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Section: Identification Parameters Of Simplified Sfr After Islanding mentioning

confidence: 99%

“…Higher adaptability of the model was advanced by reducing the SFR model to a simplified equivalent SFR model expressed by [14]. Consequently, the performances of the optimized UFLS scheme mainly depends on the precision of the parameters of the SFR model or simplified SFR model except for optimizing strategies.…”

Section: Introductionmentioning

confidence: 99%

Optimal System Frequency Response Model and UFLS Schemes for a Small Receiving-End Power System after Islanding

2017

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“…Constraint (19) ensures that if a generating unit is operative, then it must produce at least L b i and at most U b i . Constraints (20) and (21) correspond to the up and down ramp constraints, respectively. Constraint (22) indicates that the total generated power, including the used wind-power, must satisfy the demand (and the expected losses) in every period.…”

Section: Dispatch Problemmentioning

confidence: 99%

“…Using the single-machine system equivalent representation and the pertinent swing equation, it can be demonstrated that the magnitude of the ROCOF during the first seconds after a power imbalance can be approximated by [7,20]:…”

Section: System Dynamic Right After a Contingencymentioning

confidence: 99%

Robust Unit Commitment Including Frequency Stability Constraints

et al. 2016

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An increased use of variable generation technologies such as wind power and photovoltaic generation can have important effects on system frequency performance during normal operation as well as contingencies. The main reasons are the operational principles and inherent characteristics of these power plants like operation at maximum power point and no inertial response during power system imbalances. This has led to new challenges for Transmission System Operators in terms of ensuring system security during contingencies. In this context, this paper proposes a Robust Unit Commitment including a set of additional frequency stability constraints. To do this, a simplified dynamic model of the initial system frequency response is used in combination with historical frequency nadir data during contingencies. The proposed approach is especially suitable for power systems with cost-based economic dispatch like those in most Latin American countries. The study is done considering the Northern Interconnected System of Chile, a 50-Hz medium size isolated power system. The results obtained were validated by means of dynamic simulations of different system contingencies.

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“…Large amounts of wind power can be introduced into continental power systems, such as the European grid managed by the members of the European Network of Transmission System Operators for Electricity (ENTSO-E). On the other hand, small, isolated power systems, such as those found on small islands, can experience problems related to stability, and this can influence wind integration [2].…”

Section: Introductionmentioning

confidence: 99%

Critical Clearing Time and Wind Power in Small Isolated Power Systems Considering Inertia Emulation

Medina-Domínguez

Medina-Padrón

2015

Energies

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Abstract:The stability and security of small and isolated power systems can be compromised when large amounts of wind power enter them. Wind power integration depends on such factors as power generation capacity, conventional generation technology or grid topology. Another issue that can be considered is critical clearing time (CCT). In this paper, wind power and CCT are studied in a small isolated power system. Two types of wind turbines are considered: a squirrel cage induction generator (SCIG) and a full converter. Moreover, the full converter wind turbine's inertia emulation capability is considered, and its impact on CCT is discussed. Voltage is taken into account because of its importance in power systems of this kind. The study focuses on the small, isolated Lanzarote-Fuerteventura power system, which is expected to be in operation by 2020.

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Maximum Frequency Deviation Calculation in Small Isolated Power Systems

Cited by 145 publications

References 19 publications

Optimal System Frequency Response Model and UFLS Schemes for a Small Receiving-End Power System after Islanding

Optimal System Frequency Response Model and UFLS Schemes for a Small Receiving-End Power System after Islanding

Robust Unit Commitment Including Frequency Stability Constraints

Critical Clearing Time and Wind Power in Small Isolated Power Systems Considering Inertia Emulation

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