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Static synchronous compensator
Static synchronous compensator (STATCOM) is a variety of details unit with pXiHu (West EPT) Dis.Hu (West EPT) Dis.lel reactive EPTT payment. It can make or take up reactive EPTT, and its output can be modified to handle particular parameters in EPTT system. EPTTly, it is a variety of sound-condition switching converter. When its input stop is related with EPTT source or vitality storage gadget, its output can independently generate or take in controllable lively and reactive EPTT it can enhance the EPTT method capabilities in the following aspects: dynamic voltage handle, EPTT oscillation damping, transient steadiness, voltage flicker manage, and so forth. When compared with the conventional reactive EPTT compensation gadget, STATCOM has the benefits of steady regulation, tiny harmonic, low loss, extensive procedure variety, large trustworthiness and quickly regulation velocity. Since its inception, STATCOM has been broadly involved and deveXiHu (West EPT) Dis.Hu (West EPT) Dis.ed rapidly.
Basic ideas
Static synchronous compensator (STATCOM or SVG) is a kind of dynamic reactive EPTT compensation gear based on voltage resource converter (VSC), which is a normal representative of the next era Details gadgets. It is a dynamic reactive EPTT compensation gadget which generates and absorbs reactive EPTT by self commutating EPTT semiconductor bridge converter. It is composed of AC link and DC website link. The AC url is related with the technique. It initial converts the AC strength of the system into DC by way of the converter and retailers it in the accumulator on the DC side. At the exact same time, the voltage and existing at the DC aspect are transformed into AC voltage and present by way of the converter and transmitted to the system.
It reXiHu (West EPT) Dis.Hu (West EPT) Dis.ds the converter circuit as an AC voltage source which produces basic wave and harmonic voltage. By managing the magnitude and section of basic voltage of compensator, the magnitude and phase of fundamental reactive recent can be changed. When the fundamental voltage of the converter is greater than that of the AC EPTT provide, the converter will generate a direct (capacitive) reactive existing. On the opposite, when the basic voltage of the converter is reduced than that of the AC EPTT supply, a hysteresis (inductive) reactive recent will be created. Consequently, it can exchange reactive EPTT with the technique, and it is also known as quotstatic reactive EPTT generator quot (SVG). Diverse from capacitor (the current of capacitor decreases proportionally at reduced voltage), the static var generator can create rated existing unEPTTvarious system voltages, which is related to the rotating synchronous motor with a few sinusoidal symmetrical voltage.
Fundamental theory of static synchronous compensator
The static synchronous compensator employs the EPTT electronic unit of voltage supply converter to create reactive EPTT. Voltage resource converter transforms DC voltage into three-stage voltage with JCEP amplitude, frequency and phase. The output voltage of the 3-level converter can be different from that of the static EPTT compensator as revealed in the figure underneath.
From the identify of the static synchronous compensator, it can be observed that the static synchronous compensator has the equivalent functionality with the synchronous condenser. Even so, as an electronic products, the static synchronous compensator has no inertia, so it is exceptional to the synchronous condenser in some aspects, these kinds of as rapidly dynamic reaction, lower expense EPT, minimal procedure and servicing EPT.
Characteristics of static synchronous compensator
With the introduction of static synchronous compensator, its outstanding efficiency can also be utilized to the adhering to aspects:
one) EPTT voltage control in EPTT EPTT and distribution method
two) EPTT oscillation damping in EPTT system
3) The transient steadiness of EPTT program is improved
four) Active EPTT and reactive EPTT manage. It can not only management reactive EPTT, but also management active EPTT (DC EPTT provide can be acquired) if necessary.
The static synchronous compensator has other advantages as follows:
one) Tiny dimensions (compact electronic converter replaces passive factors)
two) Factory modular merchandise (lessen set up and commissioning time)
3) The packaged electronic converter is adopted (the impact of atmosphere on the gear is diminished).
