Distributed Generation: impact on Protections and Power Quality

Gómez, Juan Carlos; Vaschetti, Jorge C.; Coyos, C.; Ibarlucea, C.

doi:10.1109/tla.2013.6502846

Cited by 40 publications

(19 citation statements)

References 4 publications

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“…With the development of society, more and more DERs are connected to the distribution network, which leads to more and more applications of clean energy and brings huge economic benefits [1][2][3]. e integration of distributed generation (DG) and its synchronous operation with the power grid is one of the challenges we now face [4][5][6]. In this case, the supervision and management of power grid with self-healing function becomes more complex.…”

Section: Introductionmentioning

confidence: 99%

Fault Location of Active Distribution Networks Based on the Golden Section Method

Yang

Liu

Guo

et al. 2020

Mathematical Problems in Engineering

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Aiming at the problem of fault location in distribution networks with distributed energy resources (DERs), a fault location method based on the concepts of minimum fault reactance and golden section is proposed in this paper. Considering the influence of distributed energy resource supply on fault point current in distribution networks, an improved trapezoidal iteration method is proposed for load flow analysis and fault current calculation. This method only needs to measure the synchronous current of the distributed energy resource and does not need to measure the voltage information. Therefore, the investment in equipment is reduced. Validation is made using the IEEE 34-node test feeder. The simulation results show that the method is suitable for fault location of distribution networks with multiple distributed generators. This method can accurately locate the faults of the active distribution network under different conditions.

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Section: Introductionmentioning

confidence: 99%

Fault Location of Active Distribution Networks Based on the Golden Section Method

Yang

Liu

Guo

et al. 2020

Mathematical Problems in Engineering

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“…These issues are mitigated with the usage of distributed generation (DG). The DG, which are small generating units installed next to the centers of consumption, has gained strength due to the deregulation of the energy market, distribution system operation benefits, and due to environmental issues [4][5][6]. New technologies applied to DG increase the diversity of energy sources, reducing de-pendence on fossil fuels [7].…”

Section: Introductionmentioning

confidence: 99%

Distance Protection Analysis Applied for Distribution System with Distributed Generation

Campos¹

2018

ELECTROTECHNICAL REVIEW

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In power systems, the over-current protection scheme and, optionally with directional function, and distance function are the main protection used, principally, where the power flow is on both sides as in distribution system with distributed generation (DG), for example. However, with the increasing of DG penetration in the distribution system, these protections can not be secure and impacts in the coordination of the protection are caused due to the power flow is on both sides. Therefore, new types of protection as distance protection are candidates to solve the coordination problem in the distribution system with DG. In this paper, is proposed an application of the distance protection in the distribution system with DG, and several cases of faults and the impacts on the distance protection are evaluated in presence of DG. In the simulation and analysis of faults were varied the fault inception angle, fault type, fault resistance, and fault location. The correct and bad trips are analyzed to evaluate the distance relay performance. The distance relay used in the distribution system with DG had good performance in all simulation cases. Besides, the better performance of the distance protection proves which may be used in distribution systems with DG.Streszczenie. W systemach energetycznych zabezpieczenie przed przeciążeniem prądowym (opcjonalnie wraz z funkcją kierunku i odległości) jest główną metoda zabezpieczenia, szczególnie gdy moc może być przekazywana w dwóch kierunkach. W artykule zaproponowano nowy typ zabezpieczenia uwzględniający funkcje odległości. Uwzględniono też możliwość wykrywania błędów i możliwość określania ich położenia. Analiza zabezpieczeń uwzględniających funkcje odległości w rozproszonych systemach wytwarzania energii.

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“…The disadvantages are focused on technical aspects of the network, such as the variation of the voltage profile close to the coupling point of the DG, changes in short-circuit current levels, variation of harmonic distortion and modifications of operational conditions of the distribution network [4]- [7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Impact of the Crowbar Protection on Short-Circuit Level and Quality Index

Agamez-Arias¹,

Nunes²

2017

REPQJ

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Abstract. The accelerted growth of power generation from renewable sources have taken great importance for planning and operation of distribution network due to the power supplied to the system from these sources. The development of technologies that allow exploiting the renewable resources has led to increase of distributed generation (DG) mainly at the distribution level. The integration of these DGs provides advantages to the power system as diversification of energy market and reduction of CO2 emissions. Nevertheless, disadvantages are also present like variations of short-circuit current levels, which affects the protections coordination by causing undesirable interruptions of the power supply to users that should not be affected. This paper analyses the impact on protection system and quality service index in a radial distribution network caused by the variation of short-circuit current level after the integration of a Doubly Fed Induction Generator (DFIG) under consideration of crowbar protection (disconnect/reconnect). As study case, an IEEE 13-node test system was used to simulate a balanced short-circuit and to evaluate the impacts on protection system and quality service index.

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Distributed Generation: impact on Protections and Power Quality

Cited by 40 publications

References 4 publications

Fault Location of Active Distribution Networks Based on the Golden Section Method

Fault Location of Active Distribution Networks Based on the Golden Section Method

Distance Protection Analysis Applied for Distribution System with Distributed Generation

Analysis of the Impact of the Crowbar Protection on Short-Circuit Level and Quality Index

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