Jul 2026· 2026 5th International Conference on Energy and Electrical Power Systems (ICEEPS)· pp. 128-131· 0 citations· 11 references
Abstract
With the increase of the proportion of the renewables, the system inertia and frequency regulation capability in the sending-end power grid have become seriously insufficient, making the frequency stability issue increasingly prominent. This paper proposes a two-layer emergency frequency control scheme for sending-end power grid with multi-energy storage systems (MESSs) to enhance the frequency stability. At the upper layer, the total power control commands of MESSs are optimized to minimize the control energy consumption, considering the constraints of frequency and control power. It achieves the optimal utilization of energy. At the lower layer, the power commands of each ESS are solved by the model predictive controller (MPC), with the objective of minimizing the loss cost and sate of charge (SOC) deviation of ESS, considering the operating characteristics of different ESS. It achieves the reasonable distribution of power. Finally, the effectiveness of the proposed control scheme are verified in IEEE-39 bus system. The results show that the proposed scheme can effectively enhance the system frequency stability for the sending-end system.
With the increasing proportion of power electronic devices in multi-energy microgrid cluster systems, the inertia level of the system continues to decrease, posing severe challenges to the control of system frequency and voltage stability. To improve the frequency and voltage stability of multi-energy microgrid cluster...
With a high proportion of wind power connected to the power grid, the decline of system inertia leads to the increasingly prominent problem of frequency stability. Because of the limited kinetic energy of the rotor, wind turbines are prone to causing secondary frequency drop when participating in frequency regulation...
Jing-Shuai Ren, Dan-Yi Su, Bo Wei· Engineering Research Express· 0 citations
In the context of large-scale integration and long-distance power export of new energy bases, the strong volatility and uncertainty of wind and solar generation intensify the operational risks of the power grid under extreme contingencies. To address the increasing requirements for regulation capability and resilience...
Ling Ji, Ling Hao, Heng Chi et al.· Processes· 0 citations
High penetration of renewable energy reduces power-system inertia and increases the need for fast-frequency-support resources. This study proposes an integrated virtual synchronous machine (VSM) control framework for clusters of variable-frequency air conditioners (VFACs). The proposed method incorporates synchronous-m...
Tian Gao, Yonghua Chen, Shaohua Liu et al.· Processes· 0 citations
This article proposes two novel energy management control strategies for distributed systems: Power Specifications Optimization (PSO) and Power Trading Optimization (PTO). PSO supplies green energy to the load during the daytime and charges the storage system to reduce the use of the mains power. The regulation mechani...
Yu-En Wu, Bo-Kai Zhang· IEEE Power Electronics Magaz...· 0 citations
When the modular multilevel converter is connected to the grid, the voltage reference command issued by the dispatching system to the MMC is updated at 15-min intervals, but the rapid fluctuation of the DC side power can be close to a few seconds. This kind of phenomenon leads to the mismatch of time scale between th...
