Optimal Control of Superconducting Magnetic Energy Storage Unit

Machowski, J.; Nelles, Dieter

doi:10.1080/07313569208909624

Cited by 18 publications

(5 citation statements)

References 9 publications

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“…Proposed condition (10) properly screens the generation nodes and contingences for which there are no problems with transient angle stability. Figure 10 shows a histogram of the values of the ratio S 00 K =S nT calculated for the terminals of transformers supplying the distribution networks.…”

Section: Results For Large-scale Systemmentioning

confidence: 99%

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Simplified angle and voltage stability criteria for power system planning based on the short-circuit power

Machowski

Kacejko

Robak

et al. 2014

Int. Trans. Electr. Energ. Syst.

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SUMMARYThe article shows that for many problems appearing in power system planning and operation the shortcircuit power becomes an important and useful factor. Checking up the short-circuit power can limit a number of time consuming detailed analyses. The paper concerns mainly the power system angle and voltage stability. Detailed stability analyses of power systems are performed at short-term and mid-term planning of transmission network development. Increased load demands and market economics are pushing transmission networks closer and closer to their operational limits. Therefore it is necessary to perform even a simplified power system stability assessment also at long-term planning. The article shows that very simple criteria of angle and voltage stability based on short-circuit power can be used as screening filters for fast contingency selection. The suggested criteria have been verified for a real large-scale system.

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Section: Results For Large-scale Systemmentioning

confidence: 99%

“…More attention should be paid to a power system stability and dynamic performance in long-term planning and possible stability enhancement for example by such methods as described in [9,10].…”

Section: Introductionmentioning

confidence: 99%

Simplified angle and voltage stability criteria for power system planning based on the short-circuit power

Machowski

Kacejko

Robak

et al. 2014

Int. Trans. Electr. Energ. Syst.

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show abstract

Section: Introductionmentioning

confidence: 99%

Power system stability screening for long-term planning of transmission network development

Machowski

Kacejko

Robak

et al. 2013

2013 12th International Conference on Environment and Electrical Engineering

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Stability analyses of a power system are performed at short-term and mid-term planning of transmission network development. Increased load demands and market economics are pushing transmission networks closer and closer to their operational limits. Therefore it is necessary to perform even a simplified power system stability assessment also at long-term planning. The article shows that very simple criteria of angle stability and voltage stability based on short-circuit power can be used as screening filters for fast contingency selection. The suggested criteria have been verified for a real large-scale system.

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“…A direct Lyapunov method was first used for enhancing a power system stability by a supplementary control of FACTS devices in publications [33], [34], [35], [36], [37], [38] and later also in [7], [8]. This article describes a new (mathematically determined) algorithm of a simultaneous control of many HVDC links and many series FACTS devices used for enhancing power swings damping in the entire AC power system.…”

Section: Introductionmentioning

confidence: 99%

Damping of power swings in large-scale AC power system by simultaneous control of HVDC links and series FACTS devices

Nogal

2013

2013 IEEE Grenoble Conference

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The paper presents the algorithm of a simultaneous control of multiple HVDC links and series FACTS devices (such as phase angle regulator) to improve stability of an AC power system. The purpose of the study is to demonstrate that such stabilizing control, optimal from the perspective of the whole AC power system and insensitive to the loading condition and network configuration (robust control) may be clearly determined mathematically. The proposed method of control was derived using the direct Lyapunov method. The control system is a multi-loop control system using state variables as input signal, activated in the transient state and supplementary to the main steady-state control designed for regulating the power flow. Efficiency of the methods was confirmed with computer simulations. The algorithm perfectly damps the interarea power swings, showing at this very high robustness to changes in network configuration, loading conditions. Moreover, the proposed control produces additive damping i.e. each controlled HVDC line and/or FACTS device contributes to positive damping in AC power system.

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Optimal Control of Superconducting Magnetic Energy Storage Unit

Cited by 18 publications

References 9 publications

Simplified angle and voltage stability criteria for power system planning based on the short-circuit power

Simplified angle and voltage stability criteria for power system planning based on the short-circuit power

Power system stability screening for long-term planning of transmission network development

Damping of power swings in large-scale AC power system by simultaneous control of HVDC links and series FACTS devices

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