| Customization: | Available |
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| Phase: | Three Phase |
| Type: | Supercapacitor |
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The DVR device consists of an inverter,an isolation transformer,an SCR switch and a supereapacitor ESS, and the energy to the compensation grid is directly provided by the supereapacitor
Product Introduction
The compensation depth covers 0-130%,effectively controlling voltage sag,voltage up,and instantaneous voltage interruption.Operational Principle
Grid voltage within limits: When the grid supplies power to sensitive loads,the switch isswitched on and on quickly,and the inverter sleeps,but remains synchronized with the grid voltage for immediate action in the event of grid disturbances.
Voltage sag occurs: When there is a disturbance in the power grid,the fast switch is forcibly turned off,isolating the sensitive load from the grid,and the energy storage element supplies power to the sensitive load through the inverter.
Voltage recovery: Adjust the amplitude and phase of the inverter output voltage to be con- sistent with the grid voltage,quickly switch on and off,switch sensitive loads to the grid for power supply,and charge the energy storage components in the rectifier circuit for reuse.
Fault bypass status: In case of AVC failure or maintenance,the sensitive load current will automatically switch to the fault bypass.At this time,the fast switch and the bypass mechan- ical switch will be closed simultaneously,with a conversion time of≤1ms.After the bypass mechanical switch is closed,the fast switch will be disconnected.
Supercapacitors are a new type of energy storage device that lies between traditional capaci- tors and batteries,with the following characteristics:
1.Dry electrode process:The product has obvious advantages in reliability and stability,and has a long service life;
2.All laser welding technology,high consistency;
3.Ultra low internal resistance design,low loss;
4.The charging and discharging frequency can reach one million times,with an ultra long service life;
5.High safety,will not explode or burn;
6.Instantaneous output energy is large,capable of continuous maximum absolute current operation;
Mature Control Architecture
EDLC supercapacitor module cluster operation,all EDLC supercapacitor units are con- trolled;
Realize high output waveform quality under low carrier frequency conditions;
Direct connection of high-voltage system,cancellation of connection to step-up transformer, and overall efficiency improvement of the system;
Simple power grid scheduling with fast response speed blocks;
Power unit redundancy design extends fault free operation time;
High Reliability
Explanation for thyristor series connection:
(1)The manufacturing and driving technology of thyristors is mature,and they have already been produced in large quantities in China,so the stability of the thyristor unit itself is high;
(2)If the thyristor is damaged,it is called breakdown.The breakdown state of the
thyristor is similar to a wire and will not affect the normal power supply of the grid to the load;
(3)The thyristor drive adopts a dual circuit driving signal,and the driving power supply is independent,further enhancing reliability;
Comprehensive Protection Functions
Other instructions:
(1)The control system adopts a dual power supply form for power supply,with fast switch- ing between AC and DC power sources,which enhances the reliability of the control sys-
tem's power supply;
(2)Short circuit fault protection for thyristors;
(3)Communication fault protection between the main controller and the thyristor drive board;
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Project
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Rated voltage
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Capacity
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Group approach
|
|
Supercapacitorcell
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3.0V
|
3400F
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/
|
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Supercapacitorpack
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72V
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283F
|
2P24S
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|
Supercapacitor clusters
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936V
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21.79F
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2P312S
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No.
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Project
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Parameter
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Remark
|
|
|
1
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Nominal voltage
|
936V
|
|
|
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2
|
Nominal capacity
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21.79F
|
|
|
|
3
|
Voltage range
|
580V~850V
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|
|
|
5
|
Maximum charging power
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~350kW
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|
|
|
6
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Maximum discharge power
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~350kW
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|
|
|
7
|
Operating temperature
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Charge
|
-40~60ºC
|
|
|
8
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Discharge
|
-40~60ºC
|
|
|
|
9
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Recommended ambient temperature
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20~30ºC
|
|
|
|
10
|
Thermal management
|
Natural cooling
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|
|
|
11
|
Methods of Communication
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CAN/Ethernet/RS485
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|
|
|
12
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System IP rating
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IP20
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Cabinets
|
|
|
13
|
weight
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<900kg
|
|
|
|
14
|
Storage temperature
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0~35ºC
|
|
|
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