Ice thermal energy storage (ITES) is a type of cooling thermal energy storage. It can shift the daytime peak cooling load to nighttime, thereby enhancing the economic benefit of the cooling system and enabling peak lo...
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Grid-forming converters are commonly envisioned to replace conventional synchronous generators as the cornerstone of future power systems. However, compared to synchronous generators, power converters and their power ...
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Distinction of weak and strong AC grids for emerging hierarchical-infeed LCC-UHVDC systems is important for planning and operation departments. However, accuracy of earlier distinction methods is limited as they were ...
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Distinction of weak and strong AC grids for emerging hierarchical-infeed LCC-UHVDC systems is important for planning and operation departments. However, accuracy of earlier distinction methods is limited as they were developed by empirical reasoning without rigorous theoretical analysis. Hence in this letter, hierarchical-infeed interactive effective short-circuit ratio (HIESCR) index is first used for strength evaluation of HIDC systems with complex inter-inverter interactions considered. Boundary HIESCR (BHIESCR) is also introduced in the proposed distinction method of weak and strong AC grids. That is, weak (or strong) AC grids are, respectively, identified when HIESCR is less (or greater) than BHIESCR. Second, it is shown BHIESCR remains almost unchanged as 3.0 versus various system parameters and rated operation variables based on rigorous theoretical analysis. This salient feature makes the proposed method more accurate than earlier methods. Finally, the proposed method is validated by simulations based on the PSCAD/EMTDC program.
This paper studies the control method of multiport railway power conditioner (RPC) for power quality regulation and renewable energy integration in cophase railway power system. The circuit topology, operating princip...
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We investigated the use of Plug-and-Play methods in structured illumination microscopy using a 2D-processing approach and information from multiple 2D defocused PSFs. The achieved resolution in results from noisy simu...
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This study investigates the impact of the frequency-and current-dependent behavior of concentrated tower grounding systems on the computed fast-front overvoltages across overhead transmission line (OHTL) insulation, t...
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Capacitive Body-Coupled Powering (BCP) has been demonstrated as an effective power delivery solution for wearable biomedical system-on-chips (SoC), thanks to its improved path loss compared to the RF-based transmissio...
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This article presents a distributed periodic eventtriggered(PET)optimal control scheme to achieve generation cost minimization and average bus voltage regulation in DC *** order to accommodate the generation constrain...
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This article presents a distributed periodic eventtriggered(PET)optimal control scheme to achieve generation cost minimization and average bus voltage regulation in DC *** order to accommodate the generation constraints of the distributed generators(DGs),a virtual incremental cost is firstly designed,based on which an optimality condition is derived to facilitate the control *** meet the discrete-time(DT)nature of modern control systems,the optimal controller is directly developed in the DT ***,to reduce the communication requirement among the controllers,a distributed event-triggered mechanism is introduced for the DT optimal *** event-triggered condition is detected periodically and therefore naturally avoids the Zeno *** closed-loop system stability is proved by the Lyapunov synthesis for switched *** generation cost minimization and average bus voltage regulation are obtained at the equilibrium ***,switch-level microgrid simulations validate the performance of the proposed optimal controller.
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