Industry experience with special protection schemes

Anderson, P.M.; LeReverend, B.K.

doi:10.1109/59.535588

Cited by 172 publications

(111 citation statements)

References 9 publications

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“…Distance relays are prone to respond to unstable swings resulting in unwanted tripping at undesirable locations in the system resulting in severe generation-load imbalance [10]. It is desirable to block tripping at some locations and to permit tripping at some other locations in order to maintain system stability.…”

Section: Power System Protection Schemesmentioning

confidence: 99%

“…Generators are protected against overloads [10], abnormal frequency and voltage operations. Improper coordination of protective relays has resulted in tripping of generators during system disturbance.…”

Section: Power System Protection Schemesmentioning

confidence: 99%

“…At the same time we also observe more intelligence and decision-power converges towards the original power system substations. Such action includes, among others, changes in demand, changes in generation or system configuration to maintain system stability and specific actions to maintain acceptable voltage levels [10]. The decision and corrective actions need fast communication link to collect data and/or to initiate actions [1,11].…”

Section: Introductionmentioning

confidence: 99%

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UP-Gradation of Power System Protection Scheme through TCP/IP Using GUI

Raza¹,

Ali²,

Khan³

et al. 2012

EPE

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The paper is concerned with the Power System Protection schemes and the resulting design requirement that enhances stability as well as control with the implementation of TCP/IP. It discusses the architecture that upgrades the existing scheme by controlling all the control signals traffic between generating units, transmission system, connected loads and protection devices that are sensitive to control signals using TCP/IP and results are compared using Graphics User Interface (GUI) in MATLAB/Simulink. Protection system describes latest breakers circuit using indirect tripping command from generating units that protects load side through load breakers that receives action signal from local controllers that have a direct communication linkage with main server having strong data base, directly monitors everything through TCP/IP platform using GUI.

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Section: Power System Protection Schemesmentioning

confidence: 99%

Section: Power System Protection Schemesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

UP-Gradation of Power System Protection Scheme through TCP/IP Using GUI

Raza¹,

Ali²,

Khan³

et al. 2012

EPE

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“…Examples of SIPS include [55]: generator rejection, load rejection, under frequency and voltage load shedding, system separation, dynamic braking, and turbine valve control. In [10] several operational SIPS are described.…”

Section: System Integrity Protection Schemes (Sipss)mentioning

confidence: 99%

Improving the performance of power system protection using wide area monitoring systems

Phadke

Wall

Ding

et al. 2016

J. Mod. Power Syst. Clean Energy

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Wide area monitoring (WAM) offers many opportunities to improve the performance of power system protection. This paper presents some of these opportunities and the motivation for their development. This methods include monitoring the suitability of relay characteristics, supervisory control of backup protection, more adaptive and intelligent system protection and the creation of novel system integrity protection scheme. The speed of response required for primary protection means that the role WAM in enhancing protection is limited to backup and system protection. The opportunities offered by WAM for enhancing protection are attractive because of the emerging challenges faced by the modern power system protection. The increasingly variable operating conditions of power systems are making it ever more difficult to select relay characteristics that will be a suitable compromise for all loading conditions and contingencies. The maloperation of relays has contributed to the inception and evolution of 70 % of blackouts, thus the supervision of the backup protection may prove a valuable tool for preventing or limiting the scale of blackouts. The increasing interconnection and complexity of modern power systems has made them more vulnerable to wide area disturbances and this has contributed to several recent blackouts. The proper management of these wide area disturbances is beyond the scope of most of the existing protection and new, adaptive system integrity protection schemes are needed to protect power system security.

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“…By use of special protection systems with special load and generation rejection schemes at Ontario Hydro's largest generation complex, transmission constraints caused by regulatory delay have been reduced [35]. Reference [36] reports on a joint IEEE-CIGRE survey to determine the experience with special protection schemes. The purpose of the report is to help develop methods of reliability analysis for special protection schemes.…”

Section: Special Protection Systems and Schemesmentioning

confidence: 99%