Publications (12)
Entire Period Transient Stability of Synchronous Generators Considering LVRT Switching of Nearby Renewable Energy Sources
Bingfang Li, Songhao Yang, Guosong Wang +5
In scenarios where synchronous generators (SGs) and grid-following renewable energy sources (GFLR) are co-located, existing research, which mainly focuses on the first-swing stabil…
PLL Based Sub-/Super-synchronous Resonance Damping Controller for D-PMSG Wind Farm Integrated Power Systems
Songhao Yang, Ruixin Shen, Jin Shu +4
Existing sub-/super-synchronous (SSO) suppression methods for the direct-drive permanent magnet synchronous generators (D-PMSG) integrated power systems are mainly achieved by exte…
A System-View Optimal Additional Active Power Control of Wind Turbines for Grid Frequency Support
Yubo Zhang, Zhiguo Hao, Songhao Yang +1
Additional active power control (AAPC) of wind turbines (WTs) is essential to improve the transient frequency stability of low-inertia power systems. Most of the existing research…
An Accurate and Fast Start-up Scheme for Power System Real-time Emergency Control
Songhao Yang, Zhiguo Hao, Baohui Zhang +1
With the development of PMUs in power systems, the response-based real-time emergency control becomes a promising way to prevent power outages when power systems are subjected to l…
A Data-Aided Power Transformer Differential Protection without Inrush Blocking Module
Zexuan Lin, Songhao Yang, Yubo Zhang +2
When a slightly faulty transformer closes without load, the current waveform presents the coexistence of inrush and fault current. At this time, the inrush blocking module will blo…
An Additional Resonance Damping Control for Grey-Box D-PMSG Wind Farm Integrated Weak Grid
Tao Zhang, Songhao Yang, Zhiguo Hao +2
Considerable efforts have been made to address the resonance issue of the Direct-drive Permanent Magnet Synchronous Generator (D-PMSG) wind farm integrated power systems. However,…
Multi-Swing Transient Stability of Synchronous Generators and IBR Combined Generation Systems
Songhao Yang, Bingfang Li, Zhiguo Hao +4
In traditional views, the build-up of accelerating energy during faults can cause the well-known first-swing angle instability in synchronous generators (SGs). Interestingly, this…
Transient Stability of GFL Converters Subjected to Switching of Droop-Controlled GFM Converters
Bingfang Li, Songhao Yang, Pu Cheng +1
Integrating grid-forming converters (GFMCs) into grid-following converter (GFLC)-dominated power systems enhances the grid strength, but GFMCs' current-limiting characteristic trig…
An Argument-Principle Based Stability Assessment Method for Grey-Box DFIG Systems
Tao Zhang, Zhiguo Hao, Songhao Yang +2
Considerable efforts have been made to analyze the small-signal stability of doubly fed induction generator (DFIG) systems. However, commercial confidentiality and frequency coupli…
CT Saturation Detection and Compensation: A Hybrid Physical Model- and Data-Driven Method
Songhao Yang, Yubo Zhang, Zhiguo Hao +2
Current transformer (CT) saturation is one of the dominant causes of relay protection devices' malfunctions, which pose a threat to the safe operation of the power system. To addre…
Dominant Transient Stability of the Co-located PLL-Based Grid-Following Renewable Plant and Synchronous Condenser Systems
Bingfang Li, Songhao Yang, Qinglan Wang +4
Deploying synchronous condensers (SynCons) near grid-following renewable energy sources (GFLRs) is an effective and increasingly adopted strategy for grid support. However, the pot…
Model-Free Fast Frequency Support of Wind Farms for Tracking Optimal Frequency Trajectory
Yubo Zhang, Songhao Yang, Zhiguo Hao +1
The fast frequency support (FFS) towards frequency trajectory optimization provides a system view for the frequency regulation of wind farms (WFs). However, the existing frequency…