Generic 12-bus test system for wind power integration studies

Adamczyk, A.; Altin, Müfıt; Göksu, Ömer; Teodorescu, Remus; Iov, Florin

doi:10.1109/epe.2013.6634758

Cited by 33 publications

(36 citation statements)

References 3 publications

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“…Area 1 -has the biggest thermal generation found in the system (generators G1 and G2) and a high density of industrial and residential loads Area 2 -has a hydro generation (generator G4) and low density loads Area 3 -represents a heavily loaded area and part of the needed power is supplied by a thermal plant (generator G3) Area 4 -is considered a load area without any local generation From this point of view the system offers a lot of flexibility since all the components are configurable and opens the possibility to connect PVPPs to grids with different characteristics [5]. Area …”

Section: B Grid Modelingmentioning

confidence: 99%

Power ramp limitation and frequency support in large scale PVPPs without storage

Crăciun

Spataru

Kerekes

et al. 2013

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)

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Photovoltaic (PV) power generation started to become a mature technology and large scale PV Power Plants (PVPPs) operating in Maximum Power Point Tracking (MPPT)are not a solution anymore. During changes in the meteorological conditions, PVPPs output is directly influenced creating high power ramps inducing short-term voltage and frequency instabilities into the power system. System operators in countries with increased PV penetration started to become more and more conservative regarding their operation creating strict Grid Codes (GCs). As a proven fact European Network of Transmission System Operators for Electricity (ENTSO-E) pushed the limit one step forward involving PVPPs to contribute with ancillary services even to frequency support. The goal of the paper is to present PVPPs with power ramp limitation and frequency support capabilities without involving any storage equipment. This is achieved by setting the PVPP under its MPP and ensuring a certain amount of reserve. The nature of the reserve has a dynamic character, being released during transients in irradiance and frequency. The entire components of the system are modeled in RSCAD and the performance evaluated on a Real Time Digital Simulator (RTDS).

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Section: B Grid Modelingmentioning

confidence: 99%

Power ramp limitation and frequency support in large scale PVPPs without storage

Crăciun

Spataru

Kerekes

et al. 2013

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)

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“…The requirements are to keep the voltages within ±5%, the generators loaded up to 70% and the lines to a value of 50% [3].…”

Section: A the Generic Ieee 12 Bus System Benchmarkmentioning

confidence: 99%

Benchmark networks for grid integration impact studies of large PV plants

Crăciun

Kerekes

Séra

et al. 2013

2013 IEEE Grenoble Conference

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The increased amount of Photovoltaic (PV) power installed into the power system every year places this renewable way of producing electricity on the third position in the renewable sources hierarchy after hydro and wind solutions. Having significant levels of renewable power penetration into the system led to stability concerns of the entire system affecting its reliability and availability. In consequence system operators such as the European Network of Transmission System Operators for Electricity (ENTSO-E) had an immediate response imposing strict operating regulations in order to keep the system stable and harmonize the operation of the renewable plants with the entire system. For this purpose valid grid benchmarks such as IEEE 12 bus system for High Voltage (HV) and Cigré benchmark cell model for Medium Voltage (MV) have to be developed, tested together and prove that in the future power system with large PV penetration levels on every level, the system continues to be reliable and redundant.

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“…According to [3] and [4] the representation of external grid as a multi-machine power system can offer a better representation of the dynamics associated with the external grid, and also between the generation unit [3] or FACTS [4] and the rest of the power system under both steady state and transient conditions. Reference [3] presents a variation of the test power system for integration of wind power into PTSs, proposed by [4] for integration into PTSs of FACTS devices.…”

Section: B Multi-machine Power Systemmentioning

confidence: 99%

“…The main contribution of this paper is to compare and investigate different external grid representations, proposed in different studies [1]- [13], for assessment of FRT capabilities for the connection of a DG unit (in our case a small scale hydro unit) into a regional power system (comprising both a distribution power system and the corresponding regional transmission power system). Overall, mainly three models for representation of the external grid were identified in the literature survey: a Thévenin equivalent proposed by references [15] and [16], a benchmark power system in [3] and [4] and wide area dynamic equivalents proposed or investigated in [2], [5]- [13]. In this paper, the dynamic wide area equivalents approaches which comes from PTS studies, will be applied and validated for assessing FRT capabilities of a DG unit.…”

Section: Introductionmentioning

confidence: 99%

“…This modeling approach is used when the DG dynamic behavior is achieved locally (around the PCC) with a simplified external grid representation [4]. However, in order to reproduce the transient behavior associated with all generation units (including DG) from the external grid and to obtain realistic information about stability margins, the infinite bus-bar or single machine representation can be inappropriate for use [3] [4] [12]. Under these conditions, a multi-machine power system and wide area dynamic models for external grid (based on Ward and Extended Ward power system reduction techniques) are considered, in other studies [2]- [13].…”

Section: Introductionmentioning

confidence: 99%

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External grid representation for assessing fault ride through capabilities of distributed generation units

Preda

Uhlen

Nordgård

et al. 2012

2012 3rd IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe)

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The existing power systems are challenged as the share at MV distribution level of distributed generation is increasing. In order to ensure the security of operation and power quality in these grids, transmission and distribution power system operators have issued connection and operation guidelines related to integration of distributed generation. Some of these guidelines are designed to assess fault ride-through capabilities when dynamic connection studies are performed for distributed generation units. While most of the ongoing research have addressed especially the fault ride-through capabilities of the investigated generation unit when the most severe fault occur close to the point of common coupling, some research questions remain related to the adequacy of the representation of the external grid. This paper will compare several representations of external grid proposed by different authors for achieving more accurate results of fault ride-through capabilities of small scale hydro units.

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Generic 12-bus test system for wind power integration studies

Cited by 33 publications

References 3 publications

Power ramp limitation and frequency support in large scale PVPPs without storage

Power ramp limitation and frequency support in large scale PVPPs without storage

Benchmark networks for grid integration impact studies of large PV plants

External grid representation for assessing fault ride through capabilities of distributed generation units

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