Intelligent load shedding to counteract power system instability

Andersson, Dag; Elmersson, P.; Juntti, A.; Gajic, Z.; Karlsson, Daniel; Fabiano, Leonard A.

doi:10.1109/tdc.2004.1432442

Cited by 17 publications

(10 citation statements)

References 3 publications

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“…In the UCTE final report [3] it is stated that area 1 was importing roughly 9 GW of power from its neighbors prior to the system split. As expected, the huge imbalance between load and generation caused the frequency to drop to 49 As briefly summarized previously, UFLS schemes react after the frequency has reached a predefined threshold. In general, Europe has a large penetration of wind and combined-heat-andpower generators.…”

Section: Load Shedding Scheme Based On Wamssupporting

confidence: 62%

“…Other ideas for load shedding relays have been proposed in [49][50][51]. In [50] the problem is stated as a minimization problem where the protection system determines the minimum amount of load needed to maintain frequency and bus voltages within predefined margins.…”

Section: Real-time Load Characteristicsmentioning

confidence: 99%

“…In [51] a polynomial function in conjunction with phasor based indexes is used to determine the amount of load to be shed. In [49] intelligent schemes are discussed in general terms and field test measurements are used to highlight the importance of load characteristics.…”

Section: Real-time Load Characteristicsmentioning

confidence: 99%

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Methodology for a Security/Dependability Adaptive Protection Scheme Based on Data Mining

Bernabeu

Thorp

Centeno

2012

IEEE Trans. Power Delivery

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The power industry is currently in the process of re-inventing itself. The unbundling of the traditional monopolistic structure that gave birth to a deregulated electricity market, the mass tendency towards a greener use of energy, the new emphasis on distributed generation and alternative renewable resources, and new emerging technologies have revolutionized the century old industry.Recent blackouts offer testimonies of the crucial role played by protection relays in a reliable power system. It is argued that embracing the paradigm shift of adaptive protection is a fundamental step towards a reliable power grid. The adaptive philosophy of protection systems acknowledges that relays may change their characteristics in order to tailor their operation to prevailing system conditions. The purpose of this dissertation is to present methodology to implement a security/dependability adaptive protection scheme. It is argued that the likelihood of hidden failures and potential cascading events can be significantly reduced by adjusting the security/dependability balance of protection systems to better suit prevailing system conditions.

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Section: Load Shedding Scheme Based On Wamssupporting

confidence: 62%

Section: Real-time Load Characteristicsmentioning

confidence: 99%

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Methodology for a Security/Dependability Adaptive Protection Scheme Based on Data Mining

Bernabeu

Thorp

Centeno

2012

IEEE Trans. Power Delivery

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“…Thus, it is an appropriate idea to apply a frequency index for overload detection. In this load shedding method, conventional [3] and innovational techniques, such as midadaptive [4] and adaptive [5][6][7][8][9][10] techniques, are considered thoroughly. What have been lacking in previous studies are the optimal location of the loads (in load shedding studies) and the generating unit's control design, which this paper considers.…”

Section: Introductionmentioning

confidence: 99%

New design of intelligent load shedding algorithm based on critical line overloads to reduce network cascading failure risks

Majidi¹,

Aghamohammadi²,

Manbachi³

2014

Turk J Elec Eng & Comp Sci

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This paper presents a new algorithm for intelligent load shedding based on critical line overloads. This method can increase the efficiency for determining critical lines and sensitive loads. Hence, when critical lines expose an overload, the system will run an intelligent load shedding, which considerably curtails the sensitive loads of critical transmission lines. This can fully reduce the harmful risks of power system cascading failures that impose extensive losses to the economy of a country. For testing the accuracy and applicability of this technique, the IEEE 39-bus test system is applied as a standard case study.

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“…However in recent years by improving monitoring and protection techniques, it is not possible to completely prevent of blackouts [1][2]. Sudden and large changes in generation capacity such as the outage of a generator can produce a sever imbalance between generation and load demand.…”

Section: Introductionmentioning

confidence: 99%

Effect of Load Shedding Strategy on Interconnected Power Systems Stability When a Blackout Occurs

Shahgholian¹,

Salary²

2012

IJCEE

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Intelligent load shedding to counteract power system instability

Cited by 17 publications

References 3 publications

Methodology for a Security/Dependability Adaptive Protection Scheme Based on Data Mining

Methodology for a Security/Dependability Adaptive Protection Scheme Based on Data Mining

New design of intelligent load shedding algorithm based on critical line overloads to reduce network cascading failure risks

Effect of Load Shedding Strategy on Interconnected Power Systems Stability When a Blackout Occurs

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