A novel method for adaptive distance protection of transmission line connected to wind farms

Sadeghi, H.

doi:10.1016/j.ijepes.2012.06.072

Cited by 68 publications

(29 citation statements)

References 14 publications

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“…In adaptive distance protection, the outputs from the fault detection unit, fault classification unit and fault measurement unit will be analyzed by the adaptive setting unit. Compared to conventional distance relays which only refer to a default setting to determine the trip signal, the adaptive distance relay refers to both the default setting and adaptive setting [57].…”

Section: Distance Relaysmentioning

confidence: 99%

Progress on Protection Strategies to Mitigate the Impact of Renewable Distributed Generation on Distribution Systems

et al. 2017

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Abstract:The benefits of distributed generation (DG) based on renewable energy sources leads to its high integration in the distribution network (DN). Despite its well-known benefits, mainly in improving the distribution system reliability and security, there are challenges encountered from a protection system perspective. Traditionally, the design and operation of the protection system are based on a unidirectional power flow in the distribution network. However, the integration of distributed generation causes multidirectional power flows in the system. Therefore, the existing protection systems require some improvement or modification to address this new feature. Various protection strategies for distribution system have been proposed so that the benefits of distributed generation can be fully utilized. This paper reviews the current progress in protection strategies to mitigate the impact of distributed generation in the distribution network. In general, the reviewed strategies in this paper are divided into: (1) conventional protection systems and (2) modifications of the protection systems. A comparative study is presented in terms of the respective benefits, shortcomings and implementation cost. Future directions for research in this area are also presented.

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Section: Distance Relaysmentioning

confidence: 99%

Progress on Protection Strategies to Mitigate the Impact of Renewable Distributed Generation on Distribution Systems

et al. 2017

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“…C1.3 Voltages of the national power grid, which are used in Poland, amount to 110kV, 220kV, 400kV and 750kV [33]. The voltage of a power grid is an essential sub-criterion, since changes in the wind speed cause frequency, voltage and power fluctuations in the grid connected to a wind turbine [34]. Such fluctuations may, in turn, cause damage to transmission lines of the grid or transformers.…”

Section: The Proposed Decision Model For Dssmentioning

confidence: 99%

MCDA-based Decision Support System for Sustainable Management – RES Case Study

Wątróbski¹,

Ziemba²,

Wolski³

2016

Annals of Computer Science and Information Systems

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Abstract-The MCDA methods are used in order to solve complex decision-making problems which require considering many interrelated criteria. They are also the basis of DSS. Nevertheless, these dependencies between criteria can have an influence on the obtained solution. A class of decision-making problems, in which there are intercriteria dependencies, are decisions in the sustainability area, e.g. selection of a location and a design of an RES-based power station. The article presents a complex model, taking into consideration dependencies between criteria.

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“…To prevent maloperation, the setting points of different zones of distance relays change simultaneously with the variation of the wind farm's condition. Sadeghi [20] developed an adaptive unit that adjusts the distance relay's trip characteristic using artificial neural networks with local information. The influences of flexible alternating current transmission system (FACTS) devices on distance relay protection are analyzed in [21], and the Prony method is deployed to improve the constant pickup values based on conventional digital filters [22].…”

Section: Outgoing Transformermentioning

confidence: 99%

Differential Protection for an Outgoing Transformer of Large-Scale Doubly Fed Induction Generator-Based Wind Farms

et al. 2014

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With the rapid development of wind energy, relay protection for large-scale wind farms has been attracting some researchers, due to the absence of standards. Based on the large-scale doubly fed induction generator (DFIG)-based wind farms located in Gansu Province, China, this paper studies the differential protection for the outgoing power transformer of large-scale DFIG-based wind farms. According to the equivalent circuit of the power grid integrated with wind farms, the main frequency components of current and voltage during faults are identified mathematically and then verified by simulations. The results show that the frequencies of current and voltage at the terminals of outgoing transmission lines are inconsistent. Following the feature of frequency inconsistency, the adaptability of differential protection is analyzed, and it is found that differential protection for an outgoing transformer in large-scale wind farms may fail once ignoring the frequency inconsistency. Simulation studies demonstrate that inconsistent frequency characteristics will deteriorate the sensitivity and reliability of differential protection. Finally, several suggestions are provided for improving the performance of relay protections for large-scale DFIG-based wind farms.Energies 2014, 7 5567

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A novel method for adaptive distance protection of transmission line connected to wind farms

Cited by 68 publications

References 14 publications

Progress on Protection Strategies to Mitigate the Impact of Renewable Distributed Generation on Distribution Systems

Progress on Protection Strategies to Mitigate the Impact of Renewable Distributed Generation on Distribution Systems

MCDA-based Decision Support System for Sustainable Management – RES Case Study

Differential Protection for an Outgoing Transformer of Large-Scale Doubly Fed Induction Generator-Based Wind Farms

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