Design of threshold-based energy storage control policy based on rule-constrained two-stage stochastic program

2022 ◽  
Vol 137 ◽  
pp. 107798
Author(s):  
Awnalisa Walker ◽  
Sara Abedi ◽  
Soongeol Kwon
Keyword(s):  
Energy Storage ◽  
Control Policy ◽  
Stochastic Program ◽  
Two Stage

scholarly journals Adaptive-MPPT-Based Control of Improved Photovoltaic Virtual Synchronous Generators

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1834 ◽  
Author(s):  
Xiangwu Yan ◽  
Jiajia Li ◽  
Ling Wang ◽  
Shuaishuai Zhao ◽  
Tie Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Control Method ◽  
Synchronous Generator ◽  
Storage Device ◽  
Stable Operation ◽  
Energy Storage Devices ◽  
Two Stage ◽  
Additional Energy ◽  
Control Approach ◽  
Pv Grid

The lack of inertia and damping mechanism of photovoltaic (PV) grid-connected systems controlled by maximum power point tracking (MPPT) poses a challenge for the safety and stability of the grid. Virtual synchronous generator (VSG) technology has attracted wide attention, since it can make PV grid-connected inverter present the external characteristics of a synchronous generator (SG). Nevertheless, traditional PV-VSG is generally equipped with an energy storage device, which leads to many problems, such as increased costs, space occupation, and post-maintenance. Thus, this paper proposes a two-stage improved PV-VSG control method based on an adaptive-MPPT algorithm. When PV power is adequate, the adaptive-MPPT allows the PV to change the operating point within a stable operation area to actualize system supply-demand, matching in accordance to the load or dispatching power demand; when PV power is insufficient, PV achieves traditional MPPT control to reduce power shortage; simultaneously, improved VSG control prevents the DC bus voltage from falling continuously to ensure its stability. The proposed control approach enables the two-stage PV-VSG to supply power to loads or connect to the grid without adding additional energy storage devices, the effectiveness of which in off-grid and grid-connected modes is demonstrated by typical simulation conditions.

Risk-Averse Two-Stage Stochastic Program with Distributional Ambiguity

2018 ◽  
Vol 66 (5) ◽  
pp. 1390-1405 ◽  
Author(s):  
Ruiwei Jiang ◽  
Yongpei Guan
Keyword(s):  
Stochastic Program ◽  
Risk Averse ◽  
Two Stage
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