Application of a wide area backup protection expert system to prevent cascading outages

Jian-cheng, Tan; Crossley, P.A.; McLaren, P.G.; Gale, P.; Hall, I.; Farrell, Jay A.

doi:10.1109/61.997902

Cited by 88 publications

(9 citation statements)

References 4 publications

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“…Some characteristics of the load curve are defined as (18) to (20) to show the effects of DRP on the improvement of load curve 0 s characteristics. 7…”

Section: Economic Model Of the Responsive Loadmentioning

confidence: 99%

“…By finding the exact locations of faults to isolate the damaged part of the system and also preventing the vain trips due to the hidden failures or overloading, the cascading failures can be prevented. 18 In Ren and Dobson, 19 a statistical study has been presented in which with investigating 9-year statistical information regarding 200 power lines, the average line outages has been extracted.…”

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confidence: 99%

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Demand response programs vs congestion and cascading line outages in smart grids

Dehnavi

Abdi²

2017

Int Trans Electr Energ Syst

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Summary Cascading line outages may result in minor or major blackouts, which are considered as a main concern in the power system operation. Usually when a line is disconnected from the grid due to any reason, other lines may fail due to the congestion. So, this procedure may cause the cascading line outages. On the other hand, the demand response programs (DRPs) can be applied as an efficient, environmental friendly, and sustainable tool in preventing the cascading line outages. In this paper, a new procedure has been presented by which the direct load control (DLC) is applied intelligently as a common DRP in order to prevent the cascading line outages. In the proposed method, first the critical lines are recognized based on the line failure distribution factors (LODFs) and generalized line outage distribution factors (GLODFs). Then, the optimal busses for implementing DRPs are appointed based on power transfer distribution factors (PTDFs). After that, by applying dynamic DC optimal power flow (DCOPF), not only the cascading line outages are prevented, but also the optimal incentives in DLC are determined simultaneously. In fact, the proposed method has significant benefits both for the customers and utility. To show the effectiveness of our proposed technique, it is applied on the IEEE 118‐bus test system. Results indicate the practical benefits of the presented method.

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“…Some characteristics of the load curve are defined as (18) to (20) to show the effects of DRP on the improvement of load curve 0 s characteristics. 7…”

Section: Economic Model Of the Responsive Loadmentioning

confidence: 99%

mentioning

confidence: 99%

Demand response programs vs congestion and cascading line outages in smart grids

Dehnavi

Abdi²

2017

Int Trans Electr Energ Syst

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“…Due to low cost and simplicity in implementation, directional overcurrent relays (DOCRs) are commonly deployed in distribution networks and in subtransmission systems besides distance relays. 1 A mixed coordination of distance and DOCRs (D&DOCRs) must fulfill three different coordination scenarios which include (a) a distance relay with a distance relay, (b) a DOCR with another DOCR, and (c) a DOCR with a distance relay. All of the above had better be achieved within minimal relay tripping time.…”

Section: Introductionmentioning

confidence: 99%

Coordination of mixed distance and directional overcurrent relays: Miscoordination elimination by utilizing dual characteristics for DOCRs

Yazdaninejadi

Nazarpour

Talavat

2018

Int Trans Electr Energ Syst

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Summary Keeping selectivity among protective devices in electrical grids is of crucial importance. This task in the combinatorial protection scheme of distance and directional overcurrent relays (DOCRs) stands as a complicated problem, especially in interconnected networks. To overcome this issue, this paper proposes an enhanced protection coordination (PC) scheme by employing dual time‐current characteristics (D‐TCCs) for overcurrent relays which are followed by two inverse‐time curves in series. These characteristics simplify the complexity of the problem and yield higher flexibility and extensibility in PC process which helps to meet selectivity requirements. However, these characteristics can be implemented by numerical DOCRs which poses investment costs. Therefore, a techno‐economic optimal replacement model is devised to attain a least‐cost numerical DOCRs deployment plan while eliminating miscoordination and minimizing total operation time of the relays. Furthermore, inverse‐time curves of DOCRs are selected optimally among available options for conventional relays. By doing so, the attained flexibility is intensified which lessens imparted economic burden through alleviating the replacement level of numerical DOCRs. The proposed approach calls the need for making amendments in coordination points to handle coordination problem in the case where both conventional DOCRs and numerical DOCRs with D‐TCCs are present. Therefore, coupled with the conventional selectivity constraints, the constraint associated with new coordination points are all together accommodated in the optimization process. The proposed model demonstrates a mixed integer nonlinear programming fashion which is solved with sine‐cosine algorithm. Several numerical studies are carried out to interrogate the validity of the proposed approach. The obtained results are encouraging.

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“…PMUs provide the synchro-phasor of current and voltage with the aid of the global positioning system (GPS) [7,8]. The need for wide-area backup protection and its applications were explained in [9][10][11][12][13][14][15]. However, most research work focus on transmission line fault location (e.g., [16][17][18][19][20][21]).…”

Section: Introductionmentioning

confidence: 99%

A backup wide‐area protection technique for power transmission network

Elghazaly

Emam

Saber

2017

IEEJ Transactions Elec Engng

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This paper proposes a wide‐area backup protection technique for transmission lines using a limited number of synchronized phasor measurement units. A binary integral linear programming is used for optimal placement of phasor measurement units to achieve fault observability. The positive‐sequence voltage and current components are utilized for the detection and location of transmission lines faults. The proposed technique considers the randomness of faults on the transmission grid, different fault types, frequency fluctuations, synchronization and measurement errors, different fault inception angles, and different fault resistances, as well as various loading conditions. The proposed scheme is applied to the Western System Coordinating Council (WSCC) 9‐bus test system and the New England 39‐bus test system. Simulation results prove that the proposed protection scheme can detect and locate all transmission line faults correctly. © 2017 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Application of a wide area backup protection expert system to prevent cascading outages

Cited by 88 publications

References 4 publications

Demand response programs vs congestion and cascading line outages in smart grids

Demand response programs vs congestion and cascading line outages in smart grids

Coordination of mixed distance and directional overcurrent relays: Miscoordination elimination by utilizing dual characteristics for DOCRs

A backup wide‐area protection technique for power transmission network

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