Directional overcurrent and earth-fault protections for a biomass microgrid system in Malaysia

Bakar, Abu; Ooi, BanJuan; Govindasamy, P.; Tan, Chee Keong; Illias, Hazlee Azil; Mokhlis, Hazlie

doi:10.1016/j.ijepes.2013.10.004

Cited by 32 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The proposed study in [54] used a fault diagnosis and clearing strategy method was for symmetrical and unsymmetrical faults in a meshed distribution system. A directional overcurrent and earth fault have been investigated in [55] to protect the microgrid.…”

Section: Overcurrent Protection Schemementioning

confidence: 99%

Review of microgrid protection strategies: current status and future prospects

2022

View full text Add to dashboard Cite

Section: Overcurrent Protection Schemementioning

confidence: 99%

Review of microgrid protection strategies: current status and future prospects

2022

View full text Add to dashboard Cite

“…Other kinds of problems like cascade failure of the relay because of loss of coordination, unintentional islanding due to fault at grid or substation, auto reclosure at faulted bus because of fault currents injected by DGs in some cases are all categorized as protection coordination problems [10], [38], [39]. Considering all the sensitivity and selectivity issues of line protection, an efficient and reliable protection scheme needs to be provided for the stable operation of interconnected networks during different grid scenarios and fault conditions.…”

Section: Protection Coordination Challenges In Interconnected Distribution Networkmentioning

confidence: 99%

Optimal Protection Coordination Scheme for Radial Distribution Network Considering ON/OFF-Grid

et al. 2021

View full text Add to dashboard Cite

Technology advancement for renewable energy resources and its integration to the distribution network (DN) has garnered substantial interest in the last few decades. Integrating such resources has proven to reduce power losses and improve the reliability of DN. However, the growing number of these resources in DN has imposed additional operational and control issues in voltage regulation, system stability, and protection coordination. Incorporation of various types of distributed generators (DG) into DN causes significant changes in the system. These including new fault current sources, new fault levels, a blinding effect in the protection scheme, reduction in the reach of relays, and decrement in the detection of lowlevel fault currents for existing relays. Such changes will jeopardize the effectiveness of the entire protection scheme in the DN. This research aims to propose a robust protection scheme in which the relay coordination settings are optimized based on the network layout. The potential impacts of DGs on the DN are mitigated by utilizing a user-defined overcurrent-based relay characteristic to obtain the minimum operating time while satisfying protection coordination constraints. A hybrid optimization algorithm based on Metaheuristic and Linear Programming that has the capability to attain the optimal solution and reduces computational time is proposed in this work. The performance of the proposed technique is tested on radial DN integrated with microgrid (MG). The results obtained show the proposed technique has successfully reduced the relay operating time while meeting the protection coordination requirements for dynamic operating modes of a network.

show abstract

“…Prior of radial feeders been connected to the DG, directional features must be well-thought out due to the fact that traditional overcurrent relays are incapable of sensing bidirectional current flows. Hence, in order to mitigate the risk of protection line failure in DNs, the original protection components are recommended to be enhanced with directional overcurrent relays (DOCRs) [34,51].…”

Section: Directional Overcurrent Relaysmentioning

confidence: 99%

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

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

Directional overcurrent and earth-fault protections for a biomass microgrid system in Malaysia

Cited by 32 publications

References 7 publications

Review of microgrid protection strategies: current status and future prospects

Review of microgrid protection strategies: current status and future prospects

Optimal Protection Coordination Scheme for Radial Distribution Network Considering ON/OFF-Grid

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

Contact Info

Product

Resources

About