Power System Stability Enhancement by Static Var System using Selfcommutated Inverters

Matsuno, K.; Nagasawa, Takashi; Ohtsuki, Hiroshi; Ohnishi, Shuichi; Ishiguro, F.; Takeda, Masatoshi

doi:10.1541/ieejpes1990.112.1_57

Cited by 9 publications

(5 citation statements)

References 1 publication

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“…• The increase of DC magnetizing currents i 2u 1 and i 2v 1 due to the DC magnetic deviation is sufficiently small. …”

Section: Theoretical Approximation Of Magnetic Flux Fluctuationmentioning

confidence: 98%

“…The high-voltage side (500 kV) is directly grounded, while the low-voltage side (33 kV) is ungrounded [21]. The Y-Y transformer in diagram (a) was employed in the 80-MVA STATCOM installed by Kansai Electric Power Co. at the Inuyama substation in 1991 [1]. Actually, three-phase ∆-windings are used to obtain a sine-wave magnetic flux, but these are omitted in Fig.…”

Section: Instantaneous Voltage Vectors Under System Faultmentioning

confidence: 99%

“…The third condition is related to the amount of DC magnetizing current in i 2u 1 and i 2v 1 . When the amount is small, the second term may be neglected; otherwise, the influence of the second term must be taken into account.…”

Section: Theoretical Approximation Of Magnetic Flux Fluctuationmentioning

confidence: 99%

“…With the recent progress in mass production of IGBTs, GCT thyristors, and other self-extinguishing semiconductor power devices, there have been attempts to employ self-commutated voltage-source converters based on such devices in BTB (Back-To-Back) systems [1][2][3][4][5]. In particular, self-commutated BTB systems are attracting attention due to their multiple advanced functions [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Elucidation of DC magnetic deviation in converter transformers used for a self‐commutated BTB system during single‐line‐to‐ground faults

Hagiwara

Pham

Akagi

2009

Electrical Engineering Japan

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SUMMARYThis paper deals with a 50-MW self-commutated BTB (Back-To-Back) system intended for power flow control between transmission networks. It focuses on the dynamic behavior of the BTB system during single-line-toground (SLG) faults. During an SLG fault, a DC magnetic deviation appears in the converter transformers used for the BTB system just after the occurrence and restoration of the fault. It is indispensable to understand the magnitude of the deviation, because it may bring about magnetic saturation as well as subjecting the transformers to a large magnetizing current. This paper derives theoretical equations related to the deviation during the SLG fault. The theoretical analysis developed in this paper may make significant contributions to designing the transformers.

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“…• The increase of DC magnetizing currents i 2u 1 and i 2v 1 due to the DC magnetic deviation is sufficiently small. …”

Section: Theoretical Approximation Of Magnetic Flux Fluctuationmentioning

confidence: 98%

Section: Instantaneous Voltage Vectors Under System Faultmentioning

confidence: 99%

Section: Theoretical Approximation Of Magnetic Flux Fluctuationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Elucidation of DC magnetic deviation in converter transformers used for a self‐commutated BTB system during single‐line‐to‐ground faults

Hagiwara

Pham

Akagi

2009

Electrical Engineering Japan

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“…STATCOM (Static Synchronous Compensator), UPFC (Unified Power Flow Converter), and other devices of FACTS (Flexible AC Transmission Systems) have been developed both in this country and abroad, aiming at flexible operation of power systems and efficient utilization of existing transmission equipment [1][2][3][4][5][6]. In the United States and other countries, such devices have been widely introduced owing to the necessity of voltage control and power flow control in the deregulated power market [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

High-order harmonic resonance phenomena of a voltage-sourced converter in cable system

et al. 2004

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SUMMARYThis paper presents high-order harmonic resonance phenomena of voltage-sourced converters (VSC). When a voltage-sourced converter is connected to a power system with cables, there is a possibility that minute high-order harmonic voltages of a voltage-sourced converter are magnified by a series resonance and a parallel resonance, and high-order harmonic resonance phenomena are determined by this study. The cause of high-order harmonic resonance phenomena is investigated and elucidated by the analysis using EMTP. In addition, it is verified that high-order harmonic resonance phenomena occur as a practical matter.

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Development of a Fuzzy Rule-Based Multi-Objective Hybrid Controller for Static Synchronous Compensator

Chen

Song

Stonham

et al. 2000

Neural Computing & Applications

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Static synchronous compensator (Statcom) is a powerful new device for power systems, which can be used for various purposes. The multi-objective demands are quite different in nature, e.g. continuous linear control for voltage maintaining, and discrete bang-bang control for oscillation damping. Unfortunately, they often conflict with each other. In this respect, a supplementary damping control together with an independent voltage control is normally used. However, inevitable small disturbance and uncertainties will cause problems in the coordination of the two functions. To overcome such difficulties, a fuzzy rule-based hybrid controller is proposed in this paper, which incorporates conventional linear voltage control along with the fuzzy rulebased supplementary power damping control to form a unified global controller for Statcom. Because only simple fuzzy rules and a few input signals are involved, it is very easy to implement in a practical power system. The simulation performed on a Single-Machine-Infinite-Bus (SMIB) power system and an actual large power system demonstrates the effectiveness of the proposed approach.

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Power System Stability Enhancement by Static Var System using Selfcommutated Inverters

Cited by 9 publications

References 1 publication

Elucidation of DC magnetic deviation in converter transformers used for a self‐commutated BTB system during single‐line‐to‐ground faults

Elucidation of DC magnetic deviation in converter transformers used for a self‐commutated BTB system during single‐line‐to‐ground faults

High-order harmonic resonance phenomena of a voltage-sourced converter in cable system

Development of a Fuzzy Rule-Based Multi-Objective Hybrid Controller for Static Synchronous Compensator

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