A static compensator model for the EMTP

Lefebvre, S.; Gérin-Lajoie, L.

doi:10.1109/59.141749

Cited by 29 publications

(3 citation statements)

References 11 publications

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“…Assuming a three-phase circuit with delta-connected TCR, only the (6i r 1)-th (i: natural number) harmonics flow into the system. Furthermore, with a 12-pulse bridge TCR, only the (12i r 1)-th harmonics remain [9,11]. Therefore, the TCR harmonics can be eliminated almost completely by using an appropriate filter.…”

Section: Concept Of Svcmentioning

confidence: 98%

The stability of voltage oscillation modes in longitudinal power systems with SVC

Kakimoto

Nagai

Nakamura

2001

Electrical Engineering Japan

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SUMMARYIn this paper, we investigate the stability of voltage oscillation modes in longitudinal power systems equipped with static var compensators (SVC). These modes are usually stable, so they do not appear without external force. The conventional harmonic resonance is a phenomenon in which an oscillation mode is excited with a harmonic source. Hence, it is solved by removing the source with a harmonic filter. For this reason, an SVC is equipped with several filters. However, there is a possibility that an oscillation mode itself may become unstable. If a mode is unstable, it can have a large amplitude without any harmonic source. Since it needs no harmonic source, its frequency is not limited to a harmonic frequency, but can have any value. The harmonic instability in direct-current transmission systems is an example of such phenomena. The PLL (phase-locked loop) is considered to be effective to suppress harmonic instability with an SVC. However, no theoretical reason has been shown as yet. This paper clarifies the effectiveness of PLL based on a stability condition for the voltage oscillation modes. Frequency responses of a thyristor-controlled reactor (TCR), a component of the SVC, are largely influenced by the presence of the PLL. If a PLL exists, the stability condition is always satisfied, and all modes are stable. Lastly, we perform numerical simulations to show the validity of our investigation. © 2001 Scripta Technica, Electr Eng Jpn, 137(2): 817, 2001

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Section: Concept Of Svcmentioning

confidence: 98%

The stability of voltage oscillation modes in longitudinal power systems with SVC

Kakimoto

Nagai

Nakamura

2001

Electrical Engineering Japan

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“…As mentioned previously, the component are modelled by using the EMTP with TACS [4]. These models are tested by a series of simulation studies.…”

Section: Simulatioqmentioning

confidence: 99%

Digital study of thyristor controlled series capacitor compensated EHV transmission systems

Johns

Xuan

Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation

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This paper describes digital simulation Qf controlled series capacitor compensated(CSC) EHV transmission systems. In particular, a method is described for simultaneous digital simulation of thyristors, their firing circuit, and capacitor protection equipment. All these models are implemented by using the Electromagnetic Transients Program(EMTP) including extensive use of Transient Analysis of Control Systems(TACS). The paper concludes with presenting some interesting simulation results aud analyses.

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“…Το κύκλωμα αυτό παρέχει ένα μονοπάτι στο ρεύμα όταν το θυρίστορ παύει να άγει. Κατά τη μοντελοποίηση, προκειμένου να αποφευχθεί η αριθμητική αστάθεια πρέπει να επιλέγεται κατάλληλο βήμα ολοκλήρωσης και κατάλληλες τιμές για το κύκλωμα προστασίας RC[157], Στο μοντέλο του TCSC, που αναπτύσσεται στην παρούσα διατριβή, δεν παρουσιάζονται αριθμητικές ταλαντώσεις και ο υπολογισμός των τιμών των R και C βασίζεται στη μεθοδολογία του McMurray[158]. Τυπικές κυματομορφές ρεύματος και τάσης επαναφοράς του θυρίστορ.…”

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Συμβολή Στην Ανάλυση Διατάξεων Ελεγχόμενης Αντιστάθμισης Σειράς Γραμμών Μεταφοράς Και Στην Εύρεση Βέλτιστης Θέσης Εγκατάστασης Τους Στα Συστήματα Ηλεκτρικής Ενέργειας

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A static compensator model for the EMTP

Cited by 29 publications

References 11 publications

The stability of voltage oscillation modes in longitudinal power systems with SVC

The stability of voltage oscillation modes in longitudinal power systems with SVC

Digital study of thyristor controlled series capacitor compensated EHV transmission systems

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