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Static Synchronous Compensator, also known as SVG (Static Var Generator)
SVG is a chain-type static synchronous compensator (STATCOM/DSTATCOM, also knows as SVG) —active dynamic reactive and harmonic compensation device at different compensation ranges.
Water cooled SVG adopts high degree of protection(IP55), Power valve tower are placed in a sealed space, heat is took away through water cooling system, there is no interaction with outer environment.
More higher reliability
The working condition of power module in water cooled SVG is more better compared with air cooled SVG. Power module in water cooled SVG has good heat dissipation conditions, working shell temperature and junction temperature more less compared with air cooled SVG, which increased IGBT reliability and life.
Normal Environment
Under normal circumstances, due to water-cooled SVG needs a set of water cooling system, its initial investment cost will be higher than the air-cooled SVG.
Badly Environment
In the harsh environment, the air-cooled SVG needs dehumidification or air-conditioning scheme to compensate for its defects, which not only increase the initial investment but also increase the area of installation, and the effect is not as good as water-cooled SVG.
Maintenance cost
Air cooled needs regular cleaning and replacement of dust filter, its maintenance costs will be higher than the water-cooled SVG in future.
System Parameters | |||
Rated voltage | 3kV~35kV | ||
Input voltage range | 0.2~1.2Pu | ||
Grid frequency | 50±0.5Hz | ||
Rated capacity | ±1Mvar ~ ±120Mvar | ||
Full load power loss | <0.8% | ||
Total harmonic current distortion | ≤3%, meeting GB/T14549-1993 | ||
Total PCC harmonic voltage distortion | ≤3%, meeting GB/T14549-1993 | ||
Response time | <5ms | ||
Overload capacity | 1.1 times over-load, long time operation; 1.2times over-load for 1minute, trip | ||
Fault treatment | Redundancy design meeting automatic N-1 operation | ||
Operation mode | Constant reactive power mode, constant voltage mode, constant power factor mode, load compensation mode, Voltage& Reactive power integrated control mode | ||
Communication protocol | Modbus, IEC104 | ||
Monitoring mode | Local/remote control | ||
HMI | LCD touch screen in English | ||
Signal transmission | Optical-fiber communication | ||
Key technology | Instantaneous reactive power theory, SPWM theory, decoupling control technology, capacitor voltage balance control technology, three-phase independent control technology, single pole multiple frequency technology, carrier phase-shifting SPWM theory, chain link temperature real-time monitoring technology | ||
Power interface | 380VAC, 220VDCdual circuits dual redundancy power supply | ||
Main protection function | Over-current, Over-voltage, drive fault, Power unit over voltage, over-current, over-temperature, communication faults etc. water-cooling failure | ||
Wiring method | Star connection or Delta connection | ||
Cooling method | Air cooling, water cooling | ||
Protection class | Indoor IP30 | Container: IP54 | |
Installation method | Indoor | Outdoor | |
Service life | 30Years | ||
Operation environment | |||
Ambient temperature | -25℃~+45℃ | ||
Storage environment temperature | -40℃~+70℃ | ||
Altitude | 2000m(To be customized in case of > 2000m | ||
Relative humidity | ≤90%, no condensation | ||
Pollution grade | Class IV | ||
Executive standard | DL/T 1215.1-2013,GB/T 14549-1993,GB/T 17626.2-2006,GB/T 17626.3-2006,GB/T 17626.4-2008,GB/T 17626.5-2008,GB/T 17626.11-2008 |
Static Synchronous Compensator, also known as SVG (Static Var Generator)
SVG is a chain-type static synchronous compensator (STATCOM/DSTATCOM, also knows as SVG) —active dynamic reactive and harmonic compensation device at different compensation ranges.
Water cooled SVG adopts high degree of protection(IP55), Power valve tower are placed in a sealed space, heat is took away through water cooling system, there is no interaction with outer environment.
More higher reliability
The working condition of power module in water cooled SVG is more better compared with air cooled SVG. Power module in water cooled SVG has good heat dissipation conditions, working shell temperature and junction temperature more less compared with air cooled SVG, which increased IGBT reliability and life.
Normal Environment
Under normal circumstances, due to water-cooled SVG needs a set of water cooling system, its initial investment cost will be higher than the air-cooled SVG.
Badly Environment
In the harsh environment, the air-cooled SVG needs dehumidification or air-conditioning scheme to compensate for its defects, which not only increase the initial investment but also increase the area of installation, and the effect is not as good as water-cooled SVG.
Maintenance cost
Air cooled needs regular cleaning and replacement of dust filter, its maintenance costs will be higher than the water-cooled SVG in future.
System Parameters | |||
Rated voltage | 3kV~35kV | ||
Input voltage range | 0.2~1.2Pu | ||
Grid frequency | 50±0.5Hz | ||
Rated capacity | ±1Mvar ~ ±120Mvar | ||
Full load power loss | <0.8% | ||
Total harmonic current distortion | ≤3%, meeting GB/T14549-1993 | ||
Total PCC harmonic voltage distortion | ≤3%, meeting GB/T14549-1993 | ||
Response time | <5ms | ||
Overload capacity | 1.1 times over-load, long time operation; 1.2times over-load for 1minute, trip | ||
Fault treatment | Redundancy design meeting automatic N-1 operation | ||
Operation mode | Constant reactive power mode, constant voltage mode, constant power factor mode, load compensation mode, Voltage& Reactive power integrated control mode | ||
Communication protocol | Modbus, IEC104 | ||
Monitoring mode | Local/remote control | ||
HMI | LCD touch screen in English | ||
Signal transmission | Optical-fiber communication | ||
Key technology | Instantaneous reactive power theory, SPWM theory, decoupling control technology, capacitor voltage balance control technology, three-phase independent control technology, single pole multiple frequency technology, carrier phase-shifting SPWM theory, chain link temperature real-time monitoring technology | ||
Power interface | 380VAC, 220VDCdual circuits dual redundancy power supply | ||
Main protection function | Over-current, Over-voltage, drive fault, Power unit over voltage, over-current, over-temperature, communication faults etc. water-cooling failure | ||
Wiring method | Star connection or Delta connection | ||
Cooling method | Air cooling, water cooling | ||
Protection class | Indoor IP30 | Container: IP54 | |
Installation method | Indoor | Outdoor | |
Service life | 30Years | ||
Operation environment | |||
Ambient temperature | -25℃~+45℃ | ||
Storage environment temperature | -40℃~+70℃ | ||
Altitude | 2000m(To be customized in case of > 2000m | ||
Relative humidity | ≤90%, no condensation | ||
Pollution grade | Class IV | ||
Executive standard | DL/T 1215.1-2013,GB/T 14549-1993,GB/T 17626.2-2006,GB/T 17626.3-2006,GB/T 17626.4-2008,GB/T 17626.5-2008,GB/T 17626.11-2008 |