high voltage static var compensator-27.5KV SVG

Place of Origin	Shandong, China		Brand Name	Hoteam
Model Number	HTSVG -10KV

Specifications

stronger voltage flicker suppress ability
diversified compensation function
faster response speed
static var compensator

static var compensator

 

Main functions

(1)maintain receiving end voltage, strengthen system voltage stability

(2)compensate system reactive power, improve power factor, reduce line loss, save energy and reduce cost

(3)suppress voltage fluctuation and flicker

(4)suppress t hree phase unbalance

Technical advantages

SVG is the most advanced reactive power device at now. The compensation device based on voltage source type inverter has realized a qualitative leap of reactive power compensation mode. It not longer use capacitance and inductance devices of large capacity, but through high-frequency switch of high-power electronic device to realized conversion of reactive energy. Technically speaking, HTSVG has the following advantages compared traditional reactive power compensation device:

(1)faster response speed

SVG response time:≤10ms.

Traditional SVC response time: ≥20ms(if too fast, may cause oscillation of  reactor and capacitor).

SVG can complete interconversion from rated capacitive reactive power to rated inductive power within a very short time, this incomparable response speed completely can be competent to the impact load compensation.

(2)stronger voltage flicker suppress ability

The suppress of SVC on voltage flicker can be 2:1 at most, while SVG can be 5:1 or even higher. Being subject to the limitation of response speed, SVC’s voltage flicker ability will not increase along with the increase of compensate capacity. But as SVG has faster response speed, increasing device capacity can continuously improve its voltage flicker suppress ability.

(3)wider operating range

The output current of SVG is not depend on the voltage, performed as the characteristics of constant current source, can work among the ranges of rated inductive to rated capacitive, has wider operating range. While the nature of SVC is impedance compensation, the output current and voltage have linear relation. So when system voltage reduces, SVG can proved greater compensation capacity compared with the same capacity SVC, the characteristic of voltage and current are as follows, prompt:(if SVG is accompanied with fixed capacity of the same capacity, can constitute dynamic capacitive reactive power compensator of 0-2 times of the capacity, cost effective is more)

    (4)diversified compensation function

HTSVG not only has fast reactive power compensation functions, but also can compensate load harmonic current, negative-sequence current and other power quality problems based on user actual requirement.

(5)excellent harmonic output characteristic

HTSVG used carrier phase-shifting PWM technology and power unit cascade multilevel technology, harmonic content produced by itself is very low, no need filter at device output side.

SVG can output not only reactive current approximate sine wave(no harmonic, for grid compensation), but also the setting number harmonic current(for load harmonic filtering), the output current of SVG output current is fully active and controlled, fully meet the needs of the users;while SVC generates a lot of uncontrollable harmonic current, and comes with a large number of uncontrollable passive filter branch to realize self-generated harmonic current filter.

(6)small floor area

As no need of high voltage large-capacity capacitor and reactors to save energy, the floor area of SVG is only 50% of SVC that with the same capacity.

Performance features

    Higher efficiency,lower wastage

1.multi-H bridge power unit casecade multilevel technology and carrier phase-shifting PWM modulation technology, output voltage,current harmonic distrotation rate are low, harmonic loss is small, so is the system loss;

2.multi DSP and FPGA cooperative control, high control accuracy,fast speed;

3.can filter as many as 20 kinds of harmonic, can filter to 25^th harmonic at the maximum, and can also separately set each harmonic.

More functions,more modes

1.settable harmonic gradation compensation function;

2.a variety of load compensation function, has “harmonic preferred”,“reactive power preferred”,“harmonic filter only”,“reactive power compensation only” four kinds of woring modes;

3.a variety of system compensation function, has“voltage control”,“reactive control”,“power factor control” working modes;

4.balance compensation function, can balance the load current of each phases;

5.RS-485,RS-232,TCP/IP port,standard MODBUS RTU communication protocol, and computer remote control function.

More stable,more reliable

1.optical drive, safe,reliable,high anti-interference ability;

2.multi protection function, strict thermal design, guarantee safe and reliable system running;

3.advanced control algorithm, adapt all kinds of complicated field and stable operation, and operate in parallel with capacitor compensation bank;

4.digital control, English LCD display;

5.fault self diagnose function;

6.history event record function.

Higher power density,easier installation and maintnance

ntrol system,power unit use modular design, higher power density, easier installation andmaintenance;

2.can parallel operation, meet all kinds of compensation capacity requirements;

3.automatically limit current if output capacity is full, no need to worry about over load;

4.can choose either source current and load current detection mode, convenient site installation.

 

Technical parameters

Model			HTSVG-xx/xx   Hoteam SVG
features
			Apply to three phase three wire system, filter connect among three phases of grid, canfilter no-zero order harmonic, and compensate reactive power and unbalanced three phase.
Unit compensate current			1MVA~20MVA
input
Working voltage			6kV/10kV/27kV/35kV
Work frequency			50/60Hz   ±5%
Performance index
Start mode			Self-excited start, small start shock current
Control power supply			380V±20%, include free maintenance UPS power supply
Reactive power output range			Rated inductive to rated capacitive reactive, continuous adjustment
Reactive power output characteristics			Current source output, still output rated capacitive reactive current when system voltage reduced to 20%
Compensate control mode			System compensation or load compensation
System compensation function			Voltage regulation,reactive power regulation,transient stability control,damped control
Load compensation function			Power factor compensation,voltage flicker suppress,harmonic compensation,load unbalanced compensation
Filter cap			2~25th harmonic
Filter number set			Can separately set to each harmonic
Effective response time			Transient response<0.1mS, complete response≤10mS
Specific technical			Chained multilevel technology, effectively reduce current ripple
Overload protection			Automatically limit at 100% rated output
efficiency			More than 97% when full load
CT requirement			3, 0.2 level and above, 5A at secondary side
Current detection mode			Field programmable source current detection or load current detection mode
Display and port
language	English
model	10 or 15inch touch screen.
Communication port	RS-232,RS-485,TCP/IP
Communication protocool	MODBUS-RTU
Digital  I/O	4 digital input, 2 digital output
Product configuration
Unit operation	Allow
Multiple operation	5 sets in parallel at most
Protection level	IP3X(please contact manufacturer for higher protection level)
Standard color	RAL7035, can be custom made
Device dimension	Up to detailed model
Ambient condition
ambient		Indoor installation, clean ambient
Ambient temperature		-10~40°C
Storage temperature		-25~70°C
Relative humidity		Max 95%RH(no condensation)
altitude		Not higher than 1000m(can be higher altitude by reducing capacity)