Overview on definition and classification of power system stability

Kundur, P.; Paserba, John; Vitet, S.

doi:10.1109/qsepds.2003.159786

Cited by 127 publications

(180 citation statements)

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“…However, the smaller thickness is unfavorable for the hot side temperature stability of the TE material, and the unstable output voltage can produce adverse effects on the lifetime and work efficiency of the electronic components. 33,34 Consequently, the application of sandwiching material should consider both the generated power and the output voltage stability.…”

Section: Analysis Of the Sandwiching Materials Thicknessmentioning

confidence: 99%

Impact Factors Analysis of the Hot Side Temperature of Thermoelectric Module

Zhang

Tan

Yang

2017

Journal of Elec Materi

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The thermoelectric generator (TEG) plays a crucial role in converting the waste energy of exhaust into electricity, which ensures energy saving and increased fuel utilization efficiency. In the urban driving cycle, frequent vehicle operation, like deceleration or acceleration, results in continuous variation of the exhaust temperature. In order to make the operating performance stable, and to weaken the adverse effects of the frequent variation of the exhaust temperature on the lifetime and work efficiency of the electronic components of TEG systems, the output voltage of the thermoelectric (TE) module should stay more stable. This article provides an improved method for the temperature stability of the TE material hot side based on sandwiching material. From the view of the TEG system's average output power and the hot side temperature stability of the TE material, the analyzing factors, including the fluctuation frequency of the exhaust temperature and the physical properties and thickness of the sandwiching material are evaluated, respectively, in the sine and new European driving cycle (NEDC) fluctuation condition of the exhaust temperature. The results show few effects of sandwiching material thickness with excellent thermal conductivity on the average output power. During the 150-170 s of the NEDC test condition, the minimum hot side temperatures with a BeO ceramic thickness of 2 mm and 6 mm are, respectively, 537.19 K and 685.70 K, which shows the obvious effect on the hot side temperature stability of the BeO ceramic thickness in the process of acceleration and deceleration of vehicle driving.

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Section: Analysis Of the Sandwiching Materials Thicknessmentioning

confidence: 99%

Impact Factors Analysis of the Hot Side Temperature of Thermoelectric Module

Zhang

Tan

Yang

2017

Journal of Elec Materi

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“…The key issue is the way to set the stability constraints. Generally, there are three typical stability problems associated with dynamic system (2.1), which will result in voltage collapse and system oscillation in power systems (see [13]). Definition 2.1 Consider the dynamic system (2.1) with given u.…”

Section: Stability Constraintsmentioning

confidence: 99%

A smoothing SQP method for nonlinear programs with stability constraints arising from power systems

Tong

et al. 2010

Comput Optim Appl

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This paper investigates a new class of optimization problems arising from power systems, known as nonlinear programs with stability constraints (NPSC), which is an extension of ordinary nonlinear programs. Since the stability constraint is described generally by eigenvalues or norm of Jacobian matrices of systems, this results in the semismooth property of NPSC problems. The optimal conditions of both NPSC and its smoothing problem are studied. A smoothing SQP algorithm is proposed for solving such optimization problem. The global convergence of algorithm is established. A numerical example from optimal power flow (OPF) is done. The computational results show efficiency of the new model and algorithm.

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“…Frequency stability refers to the ability of a power system to maintain steady frequency 29 following a severe system upset resulting in a significant imbalance between generation 30 and load [1]. Hydroelectric generating units will undertake the peak modulation and 31 frequency modulation in a power system, hence their frequency stability have been a 32 critical factor of the power system security and power quality.…”

Section: Introduction 28mentioning

confidence: 99%