Critical Trajectory Method for Transient Stability Analysis

Priyadi, Ardyono; Yorino, Naoto; Jha, Deependra Kumar; Zoka, Yoshifumi; Sasaki, Yuya; Yasuda, Hajime; Kakui, Hironori

doi:10.1109/iccee.2008.11

Cited by 8 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Dalam menentukan nilai CCT dapat digunakan metode critical trajectory. Critical trajectory merupakan suatu lintasan yang dimulai dari titik pertama gangguan hingga mencapai titik kritisnya dimana sistem kehilangan sinkronisasinya [6]. Kelebihan dari metode ini dibandingkan dengan metode yang lainnya adalah kecepatan dan akurasi untuk mendapatkan nilai CCT secara langsung [7].…”

Section: Critical Trajectoryunclassified

“…Lintasan 1 menunjukkan lintasan pada saat terjadinya gangguan yang dimulai dari Stable Equilibrium Point (SEP), Lintasan 2 merepresentasikan ketika gangguan tersebut dihilangkan sebelum nilai CCT nya sehingga sistem dapat dikatakan stabil dan akan berputar mengelilingi stable equilibrium point. Lalu lintasan 3 menunjukkan lintasan kritis pemutusan gangguan, dan yang terakhir adalah lintasan 4 yang menggambarkan kondisi yang tidak stabil akibat gangguan yang terlambat dihilangkan dari sistem sehingga membuat sistem menjadi tidak stabil [6].…”

Section: Critical Trajectoryunclassified

“…Kurva daya vs. sudut rotor [4] Gambar 3. Ilustrasi critical trajectory [4] E. Supercapacitor Energy Storage Supercapacitor Energy Storage (SCES) merupakan salah satu teknologi penyimpanan energi yang terdiri dari kapasitor yang dihubungkan secara paralel dan resistor yang dihubungkan paralel terhadap kapasitor [6]. SCES merupakan peralatan elektronik yang mampu menyimpan dan mengeluarkan daya dalam intensitas yang tinggi dalam waktu yang cepat.…”

Section: Critical Trajectoryunclassified

See 2 more Smart Citations

Perbaikan CCT Pada Multi Machine Infinite Bus Dengan Supercapacitor Energy Storage Menggunakan Critical Trajectory

et al. 2020

Self Cite

View full text Add to dashboard Cite

Transient stability is an important aspect in maintaining the continuity and reliability of the electrical power system when a sudden large disturbance occurs. However, there is a time operation's limitation of the protection system to eliminate disturbance before the system becomes unstable and loses its synchronization. Critical Clearing Time (CCT) is the toleration time to eliminate the fault to keep the system stable. To improve system stability, installing Supercapacitor Energy Storage (SCES) can be one of the methods for extending the CCT values. SCES absorb large amounts of electricity simultaneously when a fault occurs. This paper proposed a determination of SCES' controller effect in extending the CCT. SCES becomes a dummy load and extends the CCT value depending on the controller's ability to respond to a fault. Controller modeling is applied to SCES, which is installed at the bus generator with determined capacity. The modified Fouad and Anderson 9-bus 3-machine system with a single machine to an infinite bus is used to validate the proposed method. Moreover, the critical trajectory method, which is known as a faster calculation and better accuracy than the time domain simulation method, is used to obtain the CCT value. The result shows that the faster controllers work against fault, the higher the CCT value improvement of system CCT. The highest improvement occurs when the controller works at 0.001s.

show abstract

Section: Critical Trajectoryunclassified

See 1 more Smart Citation

Perbaikan CCT Pada Multi Machine Infinite Bus Dengan Supercapacitor Energy Storage Menggunakan Critical Trajectory

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The method can provide a fair estimation of CCT, but sometimes more than one machine is severely which limits the method of determining the transient stability in some cases. In [11], the authors treat the transient stability problem as a boundary value problem while in [13], critical trajectory method is applied to determine kinetic and potential energy accounting leading to stability decisions. Energy function methods and their variations are used extensively with limited success in analysis of large scale power systems.…”

Section: Introductionmentioning

confidence: 99%

A practical method for power systems transient stability and security analysis

2012

View full text Add to dashboard Cite

The purpose of this paper is to provide a summary of an investigation of transient stability analysis using a combination of step-by-step integration and direct methods. The proposed method is based on extension of equal area criterion to transient stability analysis of multi-machine power systems. The proposed method first calculates the potential and kinetic energies of all machines in a power system before and after occurrence of faults. It then calculates two numbers based on energies of two groups of generators. It finally compares the largest group of kinetic energy to the smallest group of potential energy to determine the system's transient stability. A decision on stability of the system is made when the smallest group of potential energy is larger than the largest group of kinetic energy. The proposed method is used in analysis of the New England IEEE 39-bus system and the accuracy of the result is performed by comparison to the results obtained by pure numerical methods. Determination of stability using the proposed method is conservative and may be appropriate for power system operation as well as planning purposes. Index Terms---Transient stability, direct methods, numerical methods, EAC, energy function, critical machine, center-ofinertia.Tulane University and the Entergy Endowed Chair in Electric Power Engineering from 1998 to 2007. Parviz has served as member of industry Board of Directors, chair and member of organizing committees in conferences, and as research and engineering consultant for several local and national companies since 1988. He is currently a senior member of IEEE and serves as principal investigator on research projects in large scale power system modeling, simulation, analysis, and design.

show abstract

A direct method for obtaining critical clearing time for transient stability using critical generator conditions

Priyadi

Yorino

Tanaka

et al. 2011

Int Trans Elec Energy Syst

Self Cite

View full text Add to dashboard Cite

SUMMARY This paper proposes a new method for transient stability analysis for electric power systems by extending our previous studies. A special feature different from the ordinary existing methods is that a minimization problem is formulated for obtaining critical clearing time for transient stability. The critical trajectory is defined as the trajectory that starts from a point on a fault‐on trajectory at critical clearing time and reaches a critical point of losing synchronism. This paper studies the treatment of the critical condition and then proposes a new formulation for the transient stability problem. It will be demonstrated that the solution of the minimization problem successfully provides the exact critical clearing time that agrees with the conventional numerical simulation method. Copyright © 2011 John Wiley & Sons, Ltd.

show abstract

Critical Trajectory Method for Transient Stability Analysis

Cited by 8 publications

References 14 publications

Perbaikan CCT Pada Multi Machine Infinite Bus Dengan Supercapacitor Energy Storage Menggunakan Critical Trajectory

Perbaikan CCT Pada Multi Machine Infinite Bus Dengan Supercapacitor Energy Storage Menggunakan Critical Trajectory

A practical method for power systems transient stability and security analysis

A direct method for obtaining critical clearing time for transient stability using critical generator conditions

Contact Info

Product

Resources

About