Enhanced Algorithms for Transmission Protective Relay Coordination

Ramaswami, R.; Damborg, M.J.; Venkata, S.S.; Jampala, A. K.; Postforoosh, J.

doi:10.1109/mper.1986.5528257

Cited by 12 publications

(9 citation statements)

References 6 publications

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“…Comparing zone 2 impedance settings, the UW settings give better coverage than those of PSPL. This is made possible by the Successive Zone Coordination Algorithm [4] which ensures complete coordination of the zones as well as maximum coverage of the lines. The program also computes zone 3 settings but they are not included in Table 5 since Puget Power does not use zone 3 normally.…”

Section: Interactionmentioning

confidence: 99%

“…From the inception of the project, Puget Sound Power and Light Company (Puget Power) has been participating in this effort and recently ten other utilities have also begun testing this package. The algorithms developed and the utility of databases have already been reported [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…As shown in Figure 1, it consists of three main modules [4][5] OCCORD and DSCORD programs coordinate the overcurrent relays and distance relays respectively. The programs GOCCORD and GDSCORD are functionally same as OCCORD and DSCORD respectively, but have graphical interfaces.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] were tested using a 6-bus, 7-line system (TS 1). Later, the enhanced algorithms were developed [4] which can take into account parallel lines and three-terminal lines. These were tested using a 10-bus, 15-line test system (TS 2).…”

Section: Introductionmentioning

confidence: 99%

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C.A.E. Software for Transmission Protection System: Puget Power Experience

Venkata

Jampala

Ramaswami

et al. 1987

IEEE Trans. Power Delivery

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One major concern of a protection engineer is to achieve successful coordination of all relays in a transmission network. This tedious and laborious process is usually accomplished manually at present. In this paper we present the results of a Computer-Aided Protection System based on our experimentation with the entire 115 kV transmission network of Puget Sound Power and Light Company (Puget Power), which consists of 38 buses and 61 lines. The protection package entails algorithms for both overcurrent and distance relays. Effective man-machine interaction is provided by means of computer-graphics. Such interaction is invaluable in providing the protection engineer with both the details of coordination process and the control over this process. A novel feature of the package is the performance and analysis feature for overcurrent relays .The results for the above system are provided and the execution times for different test cases using an IBM 4341 computer system are also presented.

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Section: Interactionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

C.A.E. Software for Transmission Protection System: Puget Power Experience

Venkata

Jampala

Ramaswami

et al. 1987

IEEE Trans. Power Delivery

Self Cite

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“…Dwarakanath and Nowitz [2] have given graphic procedure for finding the same. Later, Damborg and Ramaswamy [3], [4] have proposed new algorithms for determining the break points, a Relative Sequence Matrix (RSM), and Set of Sequential Pairs (SSP). This method uses fundamental loop matrix and some other arbitrary matrices from which the BP relays can be found.…”

Section: Summary Of the Past Workmentioning

confidence: 99%

Simplified Algorithm To Determine Break Point Realys & Relay Coordination Based On Network Topology

Mks

2005 IEEE International Symposium on Circuits and Systems

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The coordination of the directional relays is very much complicated due to the increased inter connectivity of the system. The problem of coordinating protective relays consists of selecting the suitable settings such that their fundamental protective objectives are met for a variety of system configurations and conditions. In this paper a novel method based on network topology is suggested to solve the coordination problem. The method is implemented on radial networks, ring networks and combination of ring and radial networks.A comprehensive software package for relay coordination, using this method has been developed and tested successfully on wide range of networks.

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Determination of minimum break point set using particle swarm optimization for system‐wide protective relay setting and coordination

Moirangthem

Dash

Ramaswami

2011

Int Trans Elec Energy Syst

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SUMMARY This paper proposes an effective approach based on particle swarm optimization to identify the break point set. Determining the directional loops and the optimal break point set in the multiloop is the first step during setting and coordination of directional relays in system protection. Arbitrary starting relay locations and arbitrary consideration of relay sequence to set and coordinate relays will result in navigating loops many times and usually result in futile attempts to achieve system‐wide relay coordination. First, the network is reduced if there are any parallel lines or three end nodes. Second, all the directed loops are enumerated to enhance the algorithm. In this paper, the problem is formulated as a set covering problem, and break point set is determined using particle swarm optimization technique. Effectiveness of the proposed algorithm is implemented in different test system, and the results are compared with the existing methods. Copyright © 2011 John Wiley & Sons, Ltd.

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Enhanced Algorithms for Transmission Protective Relay Coordination

Cited by 12 publications

References 6 publications

C.A.E. Software for Transmission Protection System: Puget Power Experience

C.A.E. Software for Transmission Protection System: Puget Power Experience

Simplified Algorithm To Determine Break Point Realys & Relay Coordination Based On Network Topology

Determination of minimum break point set using particle swarm optimization for system‐wide protective relay setting and coordination

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