New Protection Scheme in Loop Distribution System with Distributed Generation

Seo, Hun-Chul

doi:10.3390/en13225897

Cited by 11 publications

(6 citation statements)

References 20 publications

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“…Otherwise, a protection scheme has been suggested based on differential protection. Reference [99] has presented a protection scheme in the loop distribution system in the presence of DGs. This method is based on the equivalent circuit of the distribution system and uses a control center with high-speed communication as the centralized protection scheme.…”

Section: Differential-based Protection Methodsmentioning

confidence: 99%

The Power System and Microgrid Protection—A Review

et al. 2020

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In recent years, power grid infrastructures have been changing from a centralized power generation model to a paradigm where the generation capability is spread over an increasing number of small power stations relying on renewable energy sources. A microgrid is a local network including renewable and non-renewable energy sources as well as distributed loads. Microgrids can be operated in both grid-connected and islanded modes to fill the gap between the significant increase in demand and storage of electricity and transmission issues. Power electronics play an important role in microgrids due to the penetration of renewable energy sources. While microgrids have many benefits for power systems, they cause many challenges, especially in protection systems. This paper presents a comprehensive review of protection systems with the penetration of microgrids in the distribution network. The expansion of a microgrid affects the coordination and protection by a change in the current direction in the distribution network. Various solutions have been suggested in the literature to resolve the microgrid protection issues. The conventional coordination of the protection system is based on the time delays between relays as the primary and backup protection. The system protection scheme has to be changed in the presence of a microgrid, so several protection schemes have been proposed to improve the protection system. Microgrids are classified into different types based on the DC/AC system, communication infrastructure, rotating synchronous machine or inverter-based distributed generation (DG), etc. Finally, we discuss the trend of future protection schemes and compare the conventional power systems.

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Section: Differential-based Protection Methodsmentioning

confidence: 99%

The Power System and Microgrid Protection—A Review

et al. 2020

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“…[83] References [84] proposes the defense of microgrids through communication links and numeric relays. These techniques [84,85] use differential protection for low fault current detection. Shabani, A et al [86] proposed a communication-aided protection scheme for photovoltaics in DC microgrids.…”

Section: Differential Protectionmentioning

confidence: 99%

A Comprehensive Review of Microgrids, Control Strategies, and Microgrid Protection Schemes

Srinivas¹,

Modi²

2022

ECS Trans.

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For the greater part of a century, the world has moved to sustainable energy production, with increased dependence on renewable energy resources to meet growing energy demand. Reserves of conventional sources are rapidly depleting, with an environmental crisis due to profligate consumption. Distributed generation through renewable sources and microgrids have proved as sustainable alternatives. Microgrids provide versatile topologies with dispersed generation and provision for expansion. However, the nonconventionality of microgrids pose challenges and the conventional control and protection strategy have proven unsuitable. This paper attempts to be a review of microgrids, challenges, and existing protection schemes. The first segment of this paper presents the definition and overview of the microgrid market scenario. The next segment discusses microgrid classification and control strategies, following which challenges, and protection schemes are reviewed. The paper concludes with an overview of relay coordination, optimization algorithms, and an outline of few international microgrid standards and codes.

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“…In the loop protection schemes, a relay may malfunction due to tie switch operations and bidirectional current flow. A new protection scheme capable of fast fault location and fault section isolation in a loop network is proposed in [42] to achieve the protection of the modern power grid. Protection devices with a simple design and timecurrent characteristics have effectively performed the tasks of protection from overcurrent in both radial and loop configurations.…”

Section: Protection Challengesmentioning

confidence: 99%

Security Impacts Assessment of Active Distribution Network on the Modern Grid Operation—A Review

et al. 2021

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The future grid will include a high penetration of distributed generation, which will have an impact on its security. This paper discusses the latest trends, components, tools, and frameworks aimed at 100% renewable energy generation for the emerging grid. The technical and economic impacts of renewable energy sources (RES)-based distributed generation (DG) on the emerging grid security are also discussed. Moreover, the latest approaches and techniques for allocating RES-DG into the distribution networks using specific performance indices based on recent literature were reviewed. Most of the methods in recent literature are based on metaheuristic optimization algorithms that can optimally allocate the RES-DGs based on the identified network variables. However, there is a need to extend these methods in terms of parameters considered, objectives, and possible ancillary support to the upstream network. The limitations of existing methods in recent literature aimed at ensuring the security of the integrated transmission-active distribution network under high RES-DG penetration were identified. Lastly, the existing coordination methods for voltage and frequency control at the transmission and active distribution system interface were also investigated. Relevant future research areas with a focus on ensuring the security of the emerging grid with high RES-DG penetration into the distribution networks are also recommended.

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New Protection Scheme in Loop Distribution System with Distributed Generation

Cited by 11 publications

References 20 publications

The Power System and Microgrid Protection—A Review

The Power System and Microgrid Protection—A Review

A Comprehensive Review of Microgrids, Control Strategies, and Microgrid Protection Schemes

Security Impacts Assessment of Active Distribution Network on the Modern Grid Operation—A Review

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