Decentralized tap changer blocking and load shedding against voltage instability: Prospective tests on the RTE system

Capitanescu, Florin; Otomega, Bogdan; Lefebvre, H.; Sermanson, V.; Cutsem, Thierry Van

doi:10.1016/j.ijepes.2009.03.025

Cited by 18 publications

(14 citation statements)

References 10 publications

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“…So we consider the integral of the squared deviation (V t -1p.u.) 2 as part of our cost function. It is also highly desirable to minimize the number of LTC moves as tap changes cause transients on the system voltages as well as mechanical wear on the LTC itself.…”

Section: Simulation Resultsmentioning

confidence: 99%

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Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part II: Simulation Results

Moradzadeh

Boel

2012

AMR

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This two-part paper deals with the coordination of the control actions in a network of many interacting components, where each component is controlled by independent control agents. As a case study we consider voltage control in large electric power systems where ever-increasing pressures from the liberalization and globalization of the electricity market has led to partitioning the power system into multiple areas each operated by an independent Transmission System Operator (TSO). Coordination of local control actions taken by those TSOs is a very challenging problem as poorly coordinated operation of TSOs may endanger the power system security by increasing the risk of blackouts. This second part of the paper presents simulation results on a 12-bus 3-area test system, using the distributed model predictive control paradigm in order to design a coordinating model-based feedback controller. Coordination requires that each agent has some information on what the future evolution of its power flows to and from its neighbors will be. It will be shown that how the communication between agents can avoid voltage collapse in circumstances where classical uncoordinated controllers fail.

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Section: Simulation Resultsmentioning

confidence: 99%

“…The D-MPC coordination scheme will also be investigated as a tool for designing controllers for medium voltage grids and µ-grids including distributed generation and storage. GenEfd [1] GenEfd [2] …”

Section: Discussionmentioning

confidence: 99%

Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part II: Simulation Results

Moradzadeh

Boel

2012

AMR

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“…However, through studies on real-life systems (e.g. [7], [10]), we observed that in almost all cases shedding small blocks after small delays yielded the smallest total curtailed power. Therefore, in this work, we chose to keep τ as small as possible and set it to 3 seconds in all our simulations.…”

Section: E Choosing the Delay τmentioning

confidence: 88%

“…Several controls are available to correct abnormal voltages: shunt compensation switching, adjustment of generation voltage setpoints, modified LTC control, and load shedding [4], [5], [6], [7].…”

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confidence: 99%

Adaptive wide-area closed-loop undervoltage load shedding using synchronized measurements

Glavić

Cutsem

2010

IEEE PES General Meeting

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Abstract-This paper proposes an emergency load shedding scheme aimed at stopping a developing voltage instability before system disruption. The proposed scheme has a wide-area view of the system, adapts itself to the emergency situation to be handled, and works in closed-loop. It relies on the detection of voltage instability from synchronized measurements recently proposed by the authors. It inherits the assumptions of this detection method (availability of a rich phasor measurement set and communication infrastructure). The method is adaptive in so far as the voltage thresholds used by this undervoltage load shedding scheme are determined from the measurements of the system evolution itself, and the curtailed power is adjusted to the severity of the situation. The features of the proposed scheme are illustrated on a small but realistic system.

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“…In addition to the standard deadband logic for the operation of LTCs in the normal control mode, some other control logics are often added, so as to enable LTCs to more effectively contribute to the long-term voltage control in the emergency control mode. Most existing emergency/modified LTC control strategies are implemented in the following ways [15], where only local voltage measurements determine the actions, without coordination with other LTCs and without explicit the anticipation of the saturation of OXLs:…”

Section: Available Controlsmentioning

confidence: 99%

Anticipating and Coordinating Voltage Control for Interconnected Power Systems

2014

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This paper deals with the application of an anticipating and coordinating feedback control scheme in order to mitigate the long-term voltage instability of multi-area power systems. Each local area is uniquely controlled by a control agent (CA) selecting control values based on model predictive control (MPC) and is possibly operated by an independent transmission system operator (TSO). Each MPC-based CA only knows a detailed local hybrid system model of its own area, employing reduced-order quasi steady-state (QSS) hybrid models of its neighboring areas and even simpler PV models for remote areas, to anticipate (and then optimize) the future behavior of its own area. Moreover, the neighboring CAs agree on communicating their planned future control input sequence in order to coordinate their own control actions. The feasibility of the proposed method for real-time applications is explained, and some practical implementation issues are also discussed. The performance of the method, using time-domain simulation of the Nordic32 test system, is compared with the uncoordinated decentralized MPC (no information exchange among CAs), demonstrating the improved behavior achieved by combining anticipation and coordination. The robustness of the control scheme against modeling uncertainties is also illustrated.

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Decentralized tap changer blocking and load shedding against voltage instability: Prospective tests on the RTE system

Cited by 18 publications

References 10 publications

Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part II: Simulation Results

Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part II: Simulation Results

Adaptive wide-area closed-loop undervoltage load shedding using synchronized measurements

Anticipating and Coordinating Voltage Control for Interconnected Power Systems

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