STATCOM: a new era of reactive compensation

Hanson, David R.; Woodhouse, M.; Horwill, C.; Monkhouse, D.R.; Osborne, Mark

doi:10.1049/pe:20020308

Cited by 46 publications

(21 citation statements)

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“…Detailed analysis of STATCOM relating to its configuration, control as well as installation has been done in [14]. A comparison between shunt capacitor, SVC and STATCOM has been done to show their performance while connected to a Multi-bus system in [15].…”

Section: Static Synchronous Compensatormentioning

confidence: 99%

Optimal Reactive Power Compensation in Electric Transmission Line using STATCOM

Pal¹

2013

IOSR-JEEE

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Section: Static Synchronous Compensatormentioning

confidence: 99%

Optimal Reactive Power Compensation in Electric Transmission Line using STATCOM

Pal¹

2013

IOSR-JEEE

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“…This problem is solved by adaptive control action. Provision is made to exchange energy between the capacitors by means of dual IGBT inverters at each link [12]; these are connected to an auxiliary coupling bus via a power isolating transformer (APIT). The inverter/AIPT combination operates at a frequency of 7.5 kHz.…”

Section: Cascaded H-bridge Configurationmentioning

confidence: 99%

Multilevel Voltage Source Conversion

Arrillaga

Liu

Watson

et al. 2009

Self‐Commutating Converters for High Power Applications

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As explained in the first chapter, both the transistor and thyristor types of self-commutating power switches can now be combined in series to form reliable high-voltage valves. The seriesconnected power switches can be fired synchronously or asynchronously (with switch voltage clamping assistance). Synchronous control, used in two-level VSC, causes static and dynamic voltage sharing problems as well as high dv=dt.Possible alternatives to two-level conversion for high-voltage applications are the multipulse and multilevel topologies. Increasing the pulse number has been traditionally achieved in current source conversion by the series or parallel connection of bridges, their respective voltage waveforms being phase-shifted with respect to each other by appropriate connections of the interface transformers. Applying the multibridge concept to self-commutating voltage source conversion improves the converter output waveforms without the assistance of highfrequency switching. However, for high-pulse conversion the increased number of converter transformers required makes this solution unattractive.A more effective alternative for high-voltage application is the multilevel concept with asynchronous firing control; this improves the dynamic voltage balancing of the valves, while the steady state voltage sharing is achieved by means of clamping devices.Like in the case of PWM, multilevel converters can vary the phase position of the converter fundamental frequency voltage with respect to the AC system voltage waveform; however, their effect on the fundamental frequency voltage magnitude is very different. In the PWM solution the magnitude of this voltage can be varied independently from the DC voltage, whereas in the multilevel alternative the voltage magnitude is fixed by the DC voltage. The main object of multilevel conversion is to generate a good high-voltage waveform by stepping through several intermediate voltage levels, i.e. the series-connected devices are switched sequentially producing an output waveform in steps. This eliminates the low-order harmonics and reduces the dv=dt rating of the valves by forcing them to switch against a fraction of the DC voltage.

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“…Compared with delta configuration, reported as 15kV/±75Mvar in [1][2][3] and lOkVI ±50Mvar in [ 4], star configuration is more suitable for small and medium-sized reactive power compensation in that its voltage is much lower in each phase and be more cost efficient. In application, cascaded STATCOM for higher To cut the cost, it adopts star configuration and self excited supply mode.…”

Section: Introductionmentioning

confidence: 99%

Research on 35kV Cascaded Statcom and ITS application

Xiang-hua

Wang

Song

et al. 2012

2012 China International Conference on Electricity Distribution

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Shaoxing electric power bureau Tsinghua University power bureau company Abstract-A Cascaded transformerless Static Synchronous Compensator (STATCOM) of 35kV/SMvar has been successfully developed and putted into application. The STATCOM is self-excited and in star configuration, each phase consists of twenty-one units, which employees 3.3kV IGBTs. With power supply by itself and the adjacent one, each unit can be bypassed and thus implement N-l redundant running. By optimized Carrier Phase-Shift PWM method, the frequency of STATCOM can be dropped as low as 275Hz with the efficiency as high as 99%. Based on high speed distributed digital processors and instant current control method, the device has realized synthesized voltage and reactive power regulation and VQC/AVC coordination. The response time of STATCOM is below lOms when voltage sag detected, thus strongly sustain the power system voltage. The experimental data and the field operation results both show that the performances of the developed transformerless 35kV ISMvar ST A TCOM are satisfied, which provides a new solution for voltage and reactive power control for electric power substation.

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STATCOM: a new era of reactive compensation

Cited by 46 publications

References 0 publications

Optimal Reactive Power Compensation in Electric Transmission Line using STATCOM

Optimal Reactive Power Compensation in Electric Transmission Line using STATCOM

Multilevel Voltage Source Conversion

Research on 35kV Cascaded Statcom and ITS application

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