The Power System Grid-Forming Technology Solution

Sieyuan Qingneng leverages its grid-forming technology platform to launch three major products: grid-forming STATCOM, SSC(E-STATCOM), and grid-forming BESS. Based on high over-current capability and Multi storage agent, these solutions employ advanced grid-forming algorithms to offer advantages such as safety, reliability, "zero-delay" response, and adaptive capability to strong/weak grids.

Description

Proposition/Advantages

Application Scenarios

Description

①Grid-forming STATCOM：Based on a cascaded H-bridge (CHB) topology, the product enhances the overcurrent capability of core components, increases the energy storage of DC capacitors, and incorporates advanced grid-forming control technology. Compared to traditional VAR compensation systems, it offers superior response speed, higher over-current capability, and a wider operating range.

②SSC(E-STATCOM)："Double-star MMC + Centralized installation of supercapacitors and cluster management" domestically first-innovated technology architecture, achieving decoupling between reactive power compensation and active power support. Combined with a high-reliability control-protection system (benchmarking flexible HVDC) and advanced grid-forming control, it significantly improves grid voltage regulation while enhancing frequency stability, ensuring secure and stable grid operation.

③Grid-forming BESS："String type + All-in-one design" Grid-forming Battery Energy Storage System.With grid-forming PCS at its core, this system employs virtual synchronous generator (VSG) technology to emulate the external characteristics of synchronous machines. Beyond efficient charging/discharging, it actively supports grid voltage and frequency, functioning as a "grid stabilizer". This product could comprehensively boost renewable energy integration capacity and strengthen regional grid reliability.

Proposition/Advantages

01

Strong Performance

Virtual Synchronous Generator (VSG) control algorithm featured voltage-source characteristics, "zero-delay" response capability, 3 times (or higher) overload capacity, and adaptive strong/weak grid compatibility.
02

Reliability

High-reliability Design Concept embedded throughout the full lifecycle – from system architecture, hardware, and software simulation to development, validation, and production – achieving a 99.7% annual operational availability rate for complete set equipment.
03

Flexibility

Comprehensive Grid-Support Functions, Transient voltage stabilization, Short-circuit ratio (SCR) enhancement, Inertia support, Wide-band oscillation damping, Impedance reshaping, Black-start and islanding operation, Active power filtering, etc.
04

Primary and secondary overall solution

Unified power electronics and HVDC platform development enables intelligent coordinated control across diverse grid-forming products, delivering superior compatibility, ultra-low latency, and exceptional stability.