OVERVIEW of HV SVG/STATCON
ZD-HVSVG series HV static var generator/SVG/STATCOM using IGBT as the core power modules which can quickly and
continuously provide capacitive or inductive reactive power, achieve constant
reactive power, constant voltage and constant power factor control through the
assessment point, and ensure the power grid is running stable, high efficiency
and high quality. In the power distribution network, the small capacity HV SVG/ STATCOM can significantly improve the power quality
(improve the power factor, overcome phase imbalance, eliminate voltage flicker
and fluctuation, restraining harmonic), if it is installed in some special
loads (such as electric arc furnace).
HV SVG/STATCOM products use advanced instantaneous reactive power theory and power decoupling
algorithm as the theory foundation, and adopt many technology such as modern
power electronics, automation, micro-electronics and network communication. It
can set reactive power nature and size, power factor and grid voltage as the
control target, track power quality dynamically, adjust reactive power output,
achieve setting curve and improve power quality.
Outoor container HV SVG air cooiling Outoor container HV SVG
Outdoor HV SVG/STATCOM SPECIFICATIONS
|
◆Rated
capacity
|
±1～±42Mvar
|
|
◆Rated work voltage
|
6kV～35kV
|
|
◆Rate
frequency
|
50/60HZ
|
|
◆Over-load capacity
|
more
than 1.2 times overload
|
|
◆Response time
|
≤5ms
|
|
◆Active power loss
|
≤0.8%
|
|
◆Total harmonic distortion
|
≤3%
|
|
◆Control power
|
380VAC,
220VAC, or 220VDC
|
|
◆Reactive power regulation
|
Compensate
inductive and capacitive Vars continuously and smoothly.
|
|
◆The start regulated reactive power
|
5kvar
|
|
◆The resolution of compensate current
|
0.5A
|
|
◆Communication interface
|
Ethernet, RS485, CAN, high-speed optical
communication interface
|
|
◆Communication protocol
|
MODBUS_RTU, ProfiBUS, CDT91,
IEC61850-103/104, CANOPEN, User-defined,can be set on HMI.
|
|
●Storage temperature
|
－30℃～+70℃
|
|
●Operating temperature
|
－10℃～+40℃
|
|
●Relative humidity
|
month average value no more than 90% , no
frost
|
|
●Altitude
|
<2000m(more
than 2000m need to customize)
|
|
●Seismic intensity
|
8
degree
|
SVG/STATCOM Main Features
HV SVG series SVG/STATCOM with high performance, high reliability is designed to meet users’
demands of improving power factor of power transmission, compensating harmonic
and the negative sequence of current. It is easy to operate. Its features are
as follows,
POWER CELL OF HV SVG POWER CELL OF HV SVG
■Better control for power grids, better load compensation, better power factor improvement
SVG/STATCOM increase system stability and power quality by providing voltage control and support, reactive power control, power oscillation damping, and increased power transfer capacity. STATCOM enables electro-intensive industrial processes to obtain a grid connection by controlling flicker level, harmonic voltage distortion, and voltage unbalance. STATCOM also allows renewables to be connected to the grid in compliance with grid code requirements by providing fault ride through support and voltage control.
■Optimal stability and quality
SVG/STATCOM is geared to quickly inject significant inductive or capacitive power. Thus the STATCOM provides improved dynamic stability of transmission systems to reduce the risk of voltage collapse and blackout while avoiding deterioration of the power quality due to its multilevel configuration: generating unwanted harmonics is widely avoided.
■In harmony with harmonics – and best flicker reduction
Harmonics generation is low due to the use of MMC technology, resulting also in low noise emissions.
The extremely fast control of SVG/STATCOM allows in industrial applications highly efficient flicker reduction and even active reduction of the lower harmonics caused by a nonlinear load such as an electric arc furnace.
■Fastest response – efficient solution
The standardized component design allows minimized engineering efforts and provides an overall fast, efficient, modular, and cost-effective solution.
ZDDQ SVG/STATCOM control with its most advanced concept offers unsurpassed speed in controlling the IGBT semiconductors to precisely generate the desired flow of energy between the converter and the feeding network.
Internal of HV SVG/STATCOM Reactors in STATCOM
Outdoor 6KV SVG/STATCOM
|
Model
|
Rated voltage
(kV)
|
Rated capacity
(Mvar)
|
Dimension
|
Remark
|
Weight
|
Width
|
Height
|
Depth
|
|
(mm)
|
(mm)
|
(mm)
|
|
HV SVG-C1.0/6-O
|
6
|
1
|
5200
|
2560
|
2438
|
Iron
core Reactors
|
4450
|
|
HV SVG-C1.5/6-O
|
1.5
|
|
HV SVG-C2.0/6-O
|
2
|
4850
|
|
HV SVG-C3.0/6-O
|
3
|
|
HV SVG-C4.0/6-O
|
4
|
5450
|
|
HV SVG-C5.0/6-O
|
5
|
|
HV SVG-C6.0/6-O
|
6
|
5750
|
|
HV SVG-C7.0/6-O
|
7
|
6700
|
Hollow Reactors
|
6450
|
|
HV SVG-C8.0/6-O
|
8
|
6600
|
|
HV SVG-C9.0/6-O
|
9
|
6700
|
|
HV SVG-C10.0/6-O
|
10
|
6800
|
|
HV SVG-C11.0/6-O
|
11
|
6900
|
|
HV SVG-C12.0/6-O
|
12
|
7000
|
Typical Application Fileds of HV SVG/STATCOM
■Electric Arc Furnaces – voltage stabilisation reduces tap-to-tap time and electrode consumption.
■Rolling Mills – elimination of voltage and harmonic distortions reduces reactive power demand and increases electrical system capacity.
■Mining and heavy industry – dynamic reactive power compensation stabilise the power system, especially on large motor start up, ensuring reliability of the power system.
■Wind and solar farms – meeting strict grid connection criteria by providing dynamic voltage control and voltage stability at the common coupling point (PCC).
■Renewables markets – including solar farms, wind farms, solar panel installations.
