The increasing penetration of renewable generation presents challenges for system frequency regulation due to short-term power fluctuations and inertia reductions. This article a coordinated control strategy in which inverter air-conditioning (IAC) units are used perform primary (PFR) fixed (FFAC) secondary (SFR). In PFR, the is provided by adjusting setpoints IAC units. A random number method proposed stochastically trigger based on deviation real time. Furthermore, recovery presented...

Accurate event identification is an essential part of situation awareness ability for power system operators. Therefore, this work proposes integrated algorithm systems. First, to obtain and filter suitable inputs identification, detection trigger based on the rate change frequency (RoCoF) presented. Then, wave arrival time difference-based triangulation method considering anisotropy propagation speed utilized estimate location detected event. Next, two-dimensional orthogonal locality...

The declining cost of solar Photovoltaics (PV) generation is driving its worldwide deployment. As conventional with large rotating masses being replaced by renewable energy such as PV, the power system's inertia will be affected. a result, frequency may vary more dramatically in case disturbance, and nadir low enough to trigger protection relays under-frequency load shedding. existing frequency-watt function mandated inverters cannot provide grid support loss-of-generation event, PV plants...

With the growing integration of renewable power generation, plug-in electric vehicles, and other sources uncertainty, increasing stochastic continuous disturbances are brought to systems. The impact on system transient stability attracts significant attention. To address this problem, paper proposes an analytical assessment method for multimachine systems under disturbances. In proposed method, a probability measure is presented analytically solved by averaging. Compared with conventional...

In this paper, a new systematic method is proposed to analyze the system frequency in power systems under uncertain variability (UV). UV gradually increases systems, which originates from renewable energy generation, random loads, measurement, and communication channels, exerting noteworthy impacts on dynamic frequency. The modeled as stochastic process paper. Then, differential equations are used describe response (SFR) of UV, based SFR model. To assess dynamics an index intra-range...

With the gradual development of more electric aircraft (MEA), issue airborne High Voltage Direct Current (HVDC) power supply system protection is increasingly evident. To guarantee re-breaking capability HVDC for short-circuit faults, this paper proposes a coupled inductor based bi-directional Γ-Z-source solid-state circuit breaker (ΓZSCB) with reclosing capabilities, in which energy recovery channel constructed by multiplexing inductors. ΓZSCB features repetitively ability, smaller impact...

DC solid-state circuit breakers are becoming increasingly critical to the safety of microgrids. However, currently proposed have problems such as high loss, large volume and weight, reflected current on source side. In order solve above problems, this paper has carried out research low-loss bi-directional Z-source solid state breaker (BZSCB) based discrete inductance. Firstly, traditional BZSCB topology derivation method is analysed, a new inductance derived. Then, working principle...

The Yunjin Dahualou Loom is a precious artifact of China's cultural heritage, with its production and weaving techniques recognized as invaluable intangible heritage. This paper presents digital restoration the Loom, utilizing technology to preserve inherit textile artifacts while addressing challenges such difficulty in long-term preservation wooden structures lengthy cycles involved traditional processes. Initially, field research was conducted gather detailed information regarding loom's...

Perovskite solar cells (PSCs) have emerged as a promising photovoltaic technology due to their long carrier diffusion lengths, tunable bandgaps, and high light absorption coefficients. However, instability remains significant barrier commercialization. In this study, we introduce two carbonyl small molecule additives with varying fluorine atom counts: 4,5-difluoro-phthalic anhydride (2FPA) tetrafluorophthalic (4FPA). The atoms groups interact passivate defects in the perovskite structure....

ABSTRACT This paper introduces a novel analytical approach for the identification of admittance matrix and generalized short‐circuit ratio (gSCR) in power systems integrated with renewable energy sources. The proposed method leverages voltage current measurements from phasor measurement units (PMUs) to construct least squares objective function, which is then solved using calculus partial derivatives. Unlike conventional optimization algorithms, this provides an solution that substantially...

This paper proposes a novel method to analyze impacts of uncertain variability on power system dynamics. There is considerable interest in integrating intermittent renewable energy and plug-in electric vehicles into systems. Therefore, systems are an environment with increasing variability. In this paper, the described as continuous-time stochastic process, thus, under modeled by differential equations. To quantify dynamics, intra-region probability index presented. Based averaging method,...

With photovoltaic generation increasing, the wide-area oscillation has a vital influence on long-distance power transmission of power. For an efficient integration generation, gain scheduling damping controller (WADC) is designed to guarantee system performance under signal delay and changing operating condition, which could be aggravated by fluctuant uncertain generation. A linear parameter-varying (LPV) model proposed represent all possible conditions within varying ranges load. Then,...