Static Var Generator(SVG-100-0.4-4L-R)

Short Description:

Static VAR generators are an important component in power systems, especially in industries that need to balance fluctuating reactive power. It helps regulate the power factor by supplying or absorbing reactive power as required. The technology can be used in a variety of scenarios, including manufacturing plants, data centers and large commercial buildings. However, too much reactive power can have undesirable consequences. It can cause voltage fluctuations, increase line losses, and reduce the efficiency of the power system. Additionally, excess reactive power can cause equipment damage, such as overheating and insulation breakdown, resulting in costly repairs and downtime. Therefore, it is crucial to effectively control and manage reactive power to ensure stable and reliable power supply.

- No over compensation, no under compensation, no resonance

- Reactive power compensation effect

- PF0.99 level reactive power compensation

- Three-phase unbalance compensation

- Capacitive inductive load-1~1

- Real-time compensation

- Dynamic response time less than 50ms

- Modular design

Rated reactive power compensation Capacity：100Kvar

Nominal voltage：AC400V(-40%~+15%)

Network： 3 phase 3 wire/3 phase 4 wire

Installation：Rack-mounted

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SVG Product Benefits

	Capacitor Banks or Reactor Banks (LC)	Static Var Generators(SVG)
Response time	• Contactor-based solutions take at least 30s to 40s to mitigate the problem and thyristor-based solutions 20ms to 30ms	✔ Real-time mitigation of power quality problems as the overall response time is less than 100µs
Output	• Depends on step sizes, cannot match load demand in real time • Depends on grid voltage as capacitor units & reactors are used	✔ Instantaneous, continuous, stepless and seamless ✔ Grid voltage fluctuation has no influence on the output
Power factor correction	• Capacitor banks needed for inductive loads and reactor banks for capacitive loads. Problems in systems with mixed loads • Not possible to guarantee unity power factor as they have steps, system will be having continuous over and undercompensation	✔ Corrects simultaneously from -1 to +1 power factor of lagging (inductive) and leading (capacitive) loads ✔ Guaranteed unity power factor at all times without any over or undercompensation (stepless output)
Design & sizing	• Reactive power studies needed to size the proper solution • Usually oversized to better adjust to changing load demands • Need to be designed taking into account system harmonics • Custom-built for specific load and network conditions	✔ Not required extensive studies as it is adjustable ✔ Mitigation capacity can be exactly what load demands ✔ Unaffected by harmonic distortion in the system ✔Can adapt to load and network conditions & changes
Resonance	• Parallel or series resonance can amplify currents in the system	✔ No risk of harmonic resonance with the network
Overloading	• Possible due to slow response and/or variation of loads	✔ Not possible as current limited to max. RMS current
Footprint & installation	• Medium to large footprint, especially if several harmonic orders • Not simple installation, especially if loads upgraded frequently	✔ Small footprint and simple installation as modules are compact in size. Existing switchgear can be used
Expansion	• Limited and depends on load conditions and network topology	✔ Simple (and not dependant) by adding modules
Maintenance & lifetime	• Using components that need extensive maintenance like fuses, circuit breakers, contactors, reactors and capacitor units • Switching, transients and resonance reduce lifetime	✔ Simple maintenance and service life up to 15 years as there is no electro-mechanical switching and no risk of transients or resonance

Static VAR generator selection quick reference table
Reactive power content Transformer capacity	C0Sφ≤0.5	0.5≤c0sφ≤0.6	0.6≤c0sφ≤0.7	0.7≤cosφ≤0.8	0.8≤cosφ≤0.9
200 kVA	100 kva	100 kva	100 kvar	100 kya	100 kva
250 kVA	150 kvar	100 kya	100 kyar	100 kvar	100 kvar
315 kVA	200 kvar	100 kvar	100 kva	100 kvar	100kvar
400 kVA	200 kvar	200 kya	200 kyar	150 kva	100kvar
500 kVA	300 kvar	300 kvar	300 kvar	150 kvar	100 kvar
630 kVA	300 kva	300 kvar	300kvar	200 kvar	150kvar
800 kVA	500 kvar	500 kva	300kvar	300 kvar	150 kvar
1000kVA	600kva	500kya	500 kvar	300 kva	200 kvar
1250 kVA	700 kvar	600 kvar	600 kvar	500 kvar	300 kvar
1600 kVA	800 kya	800 kvar	800 kyar	500 kva	300 kvar
2000 kVA	1000 kvar	1000 kvar	800 kvar	600 kvar	300kvar
2500 kVA	1500 kvar	1200 kvar	1000 kvar	8000 kvar	500 kvar
*This table is for selection reference only, please contact us for specific selection

Working Principle

The principle of the SVG is very similar to that of Active harmonic Filter, When the load is generating inductive or capacitive current, it makes load current lagging or leading the voltage. SVG detects the phase angle difference and generates leading or lagging current into the grid, making the phase angle of current almost the same as that of voltage on the transformer side, which means fundamental power factor is unit. YIY-SVG is also capable of correcting load imbalance

Technical Specifications

TYPE	220V Series	400V Series	500V Series	690V Series
Rated compensation capacity	5KVar	10KVar15KVar/35KVar/50KVar/75KVar/100KVar	90KVar	100KVar/120KVar
Nominal voltage	AC220V(-20%~+15%)	AC400V(-40%~+15%)	AC500V(-20%~+15%)	AC690V(-20%~+15%)
Rated frequency	50/60Hz±5%
Network	Single phase	3 phase 3 wire/3 phase 4 wire
Response time	<10ms
Reactive powe compensation rate	>95%
Machine efficiency	>97%
Switching frequency	32kHz	16kHz	12.8kHz	12.8kHz
Function	Reactive power compensation
Numbers in paralle	No limitation.A single centralized monitoring module can be equipped with up to 8 power modules
Communication methods	Two-channel RS485 communication interface (support GPRS/WIFI wireless communication)
Altitude without derating	<2000m
Temperature	20~+50℃
Humidity	<90%RH,The average monthly minimum temperature is 25°C without condensation on the surface
Pollution level	Below level I
Protection function	Overload protection,hardware over-current protection,over-voltage protection,power grid voltage protection power failure protection,over-temperature protection,frequency anomaly protection,short circuit protection,etc
Noise	<50dB	<60dB	<65dB
nstallation	RackWall-mounted
Into the way of line	Back entry (rack type), top entry (wall-mounted type)
Protection grade	IP20