Static Synchronous Condenser (E-STATCOM)
The Static Synchronous Condenser (E-STATCOM) is one of the Sieyuan grid-forming series equipments which is based on MMC topology, with supercapacitors on the DC side . With the growing penetration of the new energy integrated into the new-type power system, such as high proportion of Renewable Energy and high proportion of Inverter-Based Resources (IBRs), it leads to three major challenges:
➢ Voltage Instability
➢ Frequency Instability
➢ Wideband Oscillations
E-STATCOM provides reactive power support and inertia support functions for the power grid, which can effectively solve the power quality problems faced in the new-type power systems.With the self-developed advanced grid-forming control algorithm, the E-STATCOM can perfectly cover all the functions of traditional rotating Synchronous Condenser , such as faster transient response, more controllable and stable voltage and frequency regulation, smarter and more economic. Furthermore, the E-STATCOM can even provide extensible functions such as broadband oscillation damping, impedance reshaping, and active power filtering.
Improvingth estability of the power system
High reliability
Smarter and more economic
Features
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01
Improvingthe stability of the power system
E-STATCOM Can provide inertia support and transient voltage support with fast response.It Can actively support the power grid and maintain its stability.
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02
High reliability
The technology of E-STATCOM originates from HVDC. The control system and the protection system are independently layered. The control system adopts double redundancy configuration.
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03
Smarter and more economic
One-clickbackup, recovery; intelligent warning, fast and accurate positioning; control and protection system support hot swap, online maintenance and upgrading. It is simpler and more convenient than distributed Synchronous Condenser, and does not require additional professional operators.
Technical Specifications
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Space occupancy
Small footprint（in contrast to Synchronous Condenser）
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Topology
MMC
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Energy storage element
High power density super-capacitors, Hybrid super-capacitors
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Rated voltage (kV)
10 / 35
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Rated frequency (Hz)
50 / 60
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Rated capacity (MVA)
Typical values 10～50,Other capacities can be specially configured
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Over current ratio
≥ 3
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Inertial Time Constant (s)
1～10，Other capacities can be specially configured
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Layout
Indoor/Outdoor container layout
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Cooling method
water cooling
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Overload capacity
Reactive Power State: 1.1 p.u. Long-term continuous operation,
1.5 p.u.continuous operation with no less than 2 hours,
3 p.u. continuous operation no less than 10s
Special requirements can be configured -
Series reactors
≥ 10 %
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Output current THD
≤ 3 %
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Operating mode
Grid-following/Grid-forming
Tel : +021-61610502
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