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Static synchronous compensator
Static synchronous compensator (STATCOM) is a sort of details system with pXiHu (West EPT) Dis.Hu (West EPT) Dis.lel reactive EPTT payment. It can create or soak up reactive EPTT, and its output can be changed to control specific parameters in EPTT method. EPTTly, it is a type of reliable-point out switching converter. When its enter conclude is related with EPTT offer or vitality storage system, its output can independently make or take in controllable lively and reactive EPTT it can boost the EPTT system capabilities in the subsequent factors: dynamic voltage handle, EPTT oscillation damping, transient balance, voltage flicker management, etc. Compared with the classic reactive EPTT compensation gadget, STATCOM has the rewards of constant regulation, modest harmonic, lower reduction, broad operation assortment, substantial reliability and quick regulation velocity. Since its inception, STATCOM has been extensively concerned and deveXiHu (West EPT) Dis.Hu (West EPT) Dis.ed swiftly.
Simple ideas
Static synchronous compensator (STATCOM or SVG) is a variety of dynamic reactive EPTT compensation tools primarily based on voltage source converter (VSC), which is a standard representative of the second generation Information products. It is a dynamic reactive EPTT payment system which generates and absorbs reactive EPTT by self commutating EPTT semiconductor bridge converter. It is composed of AC hyperlink and DC hyperlink. The AC website link is related with the method. It 1st converts the AC vitality of the program into DC by means of the converter and shops it in the accumulator on the DC aspect. At the exact same time, the voltage and current at the DC side are transformed into AC voltage and current through the converter and transmitted to the system.
It reXiHu (West EPT) Dis.Hu (West EPT) Dis.ds the converter circuit as an AC voltage supply which makes elementary wave and harmonic voltage. By managing the magnitude and stage of basic voltage of compensator, the magnitude and stage of elementary reactive present can be transformed. When the elementary voltage of the converter is increased than that of the AC EPTT source, the converter will generate a guide (capacitive) reactive existing. On the opposite, when the fundamental voltage of the converter is decrease than that of the AC EPTT source, a hysteresis (inductive) reactive recent will be produced. Consequently, it can trade reactive EPTT with the method, and it is also named quotstatic reactive EPTT generator quot (SVG). Various from capacitor (the recent of capacitor decreases proportionally at minimal voltage), the static var generator can create rated recent unEPTTvarious system voltages, which is similar to the rotating synchronous motor with three sinusoidal symmetrical voltage.
Fundamental principle of static synchronous compensator
The static synchronous compensator utilizes the EPTT digital gadget of voltage resource converter to create reactive EPTT. Voltage resource converter transforms DC voltage into 3-phase voltage with JCEP amplitude, frequency and period. The output voltage of the three-stage converter can be various from that of the static EPTT compensator as proven in the figure beneath.
From the title of the static synchronous compensator, it can be witnessed that the static synchronous compensator has the similar performance with the synchronous condenser. Nevertheless, as an digital equipment, the static synchronous compensator has no inertia, so it is outstanding to the synchronous condenser in some facets, these kinds of as quick dynamic reaction, reduced investment EPT, reduced operation and upkeep EPT.
Attributes of static synchronous compensator
With the introduction of static synchronous compensator, its exceptional efficiency can also be utilized to the pursuing aspects:
1) EPTT voltage manage in EPTT EPTT and distribution technique
2) EPTT oscillation damping in EPTT technique
3) The transient steadiness of EPTT method is improved
four) Energetic EPTT and reactive EPTT manage. It can not only management reactive EPTT, but also handle energetic EPTT (DC EPTT provide can be acquired) if necessary.
The static synchronous compensator has other advantages as follows:
one) Modest dimensions (compact electronic converter replaces passive parts)
2) Manufacturing unit modular products (lessen installation and commissioning time)
three) The packaged digital converter is adopted (the affect of surroundings on the gear is decreased).
