Coordination of directional relays without generating all circuits

Prasad, V.C.; Rao, K. Ramachandra; Rao, A.S.

doi:10.1109/mper.1991.88842

Cited by 6 publications

(14 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Extensive research on the topic of automatic calculation of protection settings has been undertaken [8], which includes the use of topological analysis [9][10][11], optimisation theory [12,13] and artificial intelligence [8,14,15]. However, such systems performing automatic protection setting and coordination are not particularly suitable for settings validation, even though they provide very relevant functionality.…”

Section: Validation Of Protection Settingsmentioning

confidence: 99%

Design of an intelligent system for comprehensive validation of protection settings

Hong¹,

Booth²,

Catterson³

2016

13th International Conference on Development in Power System Protection 2016 (DPSP)

View full text Add to dashboard Cite

The reliable operation of protection systems depends on the correct settings of protective devices. The complexity of power networks and the large number of protection setting parameters make it extremely challenging to comprehensively validate the settings. This paper presents the design of a hybrid Rule-Based (RB) and Model-Based (MB) intelligent system termed Power system Protection Smart Tool (PPST), which is proposed as a solution for addressing the challenges associated with protection settings validation and performance checking. The RB element evaluates the settings using rules extracted from experts' knowledge and utility setting policies, while the MB element automatically interfaces with DIgSILENT PowerFactory to populate power network and protection system models to simulate and check the actual performance of the protection system under a variety of operational contexts. A case study is presented to demonstrate the operation of PPST, which shows that it is capable of effectively conducting the protection settings validation and performance checking task.

show abstract

Section: Validation Of Protection Settingsmentioning

confidence: 99%

Design of an intelligent system for comprehensive validation of protection settings

Hong¹,

Booth²,

Catterson³

2016

13th International Conference on Development in Power System Protection 2016 (DPSP)

View full text Add to dashboard Cite

show abstract

“…For large scale penetration of DER, the reach setting of distance relays installed at transmission line may get effected [8]. iv) From the literature, it is also observed that, the relay coordination problems are optimised without any upper limit of CTI [21,43]. This results in delayed operation of backup over current relays particularly when the fault current contribution from Photovoltaic based DER is weak.…”

Section: Review Of Methodologies Used For Formulation Of Fitness Funcmentioning

confidence: 99%

“…This technique is quite simple, fast and requires only half number of network the loops. Therefore, the need of generating all loops were eliminated in this technique [21] and only fundamental circuit matrix is sufficient to generate all the B/P as well as BPS. A method based on the branches of the network was also reported in [22] for determining the minimum BPS.…”

Section: Graph Theory Techniquesmentioning

confidence: 99%

Protection coordination in distribution systems with and without distributed energy resources- a review

Singh

2017

Prot Control Mod Power Syst

View full text Add to dashboard Cite

Emission of greenhouse gases and depletion of fossil fuel reserves are two key drivers, which are forcing the mankind to generate the future energy demand from the renewable energy resources. These resources are generally distributed in nature and are directly integrated at distribution levels. Increasing penetration of the distributed energy resources in distribution power networks creates additional operational and control issues. These are mostly regulatory, economical load dispatching, power quality and protection issues. Generally power distribution systems are protected with the help of dedicated over current based protection schemes. But increasing share of distributed energy resources penetration in electric utilities poses a serious threat to the existing protection coordination schemes of the distribution systems. Distributed energy resources connected distribution networks become interconnected in nature and protection coordination schemes, which are designed for unidirectional flow of fault currents become ineffective/non-functional. Therefore, new protection coordination schemes are required for providing the adequate protection coordination for distributed energy resources connected electric power networks. In the available literature, the protection coordination schemes for radial distribution systems and developments in the area of protection coordination are discussed in detail. A thorough review for all these protection coordination schemes for distribution systems with and without distributed energy resources is done in this review article. It includes the analytical and artificial intelligence based techniques application for coordination of protective relays in the distribution systems. The limitations and research gaps in the area of protection coordination schemes are also presented in this review article. The aim of this research paper is to bring all the available research in the area of relay coordination on one platform, so that it will help the emerging researcher to identify the future scope of relay coordination application for distributed energy resources connected distribution systems.

show abstract

“…Essentially, this approach is an extension of the graph theoretic approach developed by Dwarakanath and Nowitz [5]. The approach presented in [1] suffered from certain inefficiencies which have been addressed in [6], [7], [8]. Bapeswara Rao et.…”

Section: Introductionmentioning

confidence: 99%

“…Reference [7] has suggested further enhancements using Breadth First Search (BFS) algorithm. A method that does not require computation of all loops is presented in [8]. It is shown that all the minimal break point set of the given graph is a product term in boolean function S expressed over only fundamental set of loops.…”

mentioning

confidence: 99%

A simple and efficient approach to determination of minimum set of break point relays for transmission protection system coordination

Gajbhiye

Helwade

et al. 2005

2005 International Conference on Future Power Systems

View full text Add to dashboard Cite

Abstract-Coordination of relays in a meshed system is an iterative process. It involves finding a set of break point relays. In this paper, we propose a new polynomial time approximation algorithm for computation of the minimum break point relay set. In turn, procedure for computation of minimum break point relays requires systematic enumeration of all possible simple loops in the system. Therefore, we also propose a simple method for enumerating all possible loops. The advantages of proposed approach are (1) simplicity and (2) reduced computational complexity. Case studies on various topologies demonstrate the utility of the proposed approach.

show abstract

Coordination of directional relays without generating all circuits

Cited by 6 publications

References 4 publications

Design of an intelligent system for comprehensive validation of protection settings

Design of an intelligent system for comprehensive validation of protection settings

Protection coordination in distribution systems with and without distributed energy resources- a review

A simple and efficient approach to determination of minimum set of break point relays for transmission protection system coordination

Contact Info

Product

Resources

About