Hydrogen and renewable electricity-based microgrid is considered to be a promising way reduce carbon emissions, promote the consumption of energies improve sustainability energy system. In view fact that existing day-ahead optimal operation model ignores uncertainties fluctuations loads, two-stage management proposed for sustainable wind-PV-hydrogen-storage based on receding horizon optimization eliminate adverse effects their fluctuations. first stage, performed predicted outpower WT PV,...

This paper proposes a real-time pricing scheme for the demand response management between one energy provider and multiple hub operators. A promising trading scenario has been designed near future integrated system. The Stackelberg game approach was employed to capture interactions (leader) consumers (follower). distributed algorithm proposed derive equilibrium, then, best strategies each operator were explored in order maximize their benefits. Simulation results showed that method can...

Recently, the emerging rail grinding method using abrasive belt has been proposed to efficiently achieve required geometric profile and surface quality of railhead. Although features indeed have a great influence on this process, topography regarding grits at microscopic scale is neglected. In article, contact pressure model was developed reveal behavior every active grit based digital representation belt. Then numerical material removal quantity also established consideration...

To assess the reliability of urban microgrid, a set novel indices are proposed, including Microgrid System Important Load Average Interruption Frequency Index, Duration Service Availability Index and Energy Not Index. Meanwhile, Storage Optimisation Degree is introduced to evaluate optimal capacity energy storage system improve microgrid reliability. verify effectiveness these indices, case studies performed on improved main feeder line 4 IEEE RBTS 6 with Monte Carlo simulation method. The...

Miniature hydraulic actuators are especially suitable for narrow-space and harsh environment arrangement. However, when using thin long hoses to connect components, the volume expansion caused by pressurized oil inside can have significant adverse effects on performance of miniature system. Moreover, volumetric variation relates many uncertain factors that difficult describe quantitatively. This paper conducted an experiment test hose deformation characteristics presents Generalized...

Multi-energy microgrids (MEMG) play an important role in promoting carbon neutrality and achieving sustainable development. This study investigates effective energy management strategy (EMS) for MEMG. First, system model that allows intra-microgrid conversion is developed, the corresponding Markov decision process (MDP) problem formulated. Subsequently, improved double deep Q network (iDDQN) algorithm proposed to enhance exploration ability by modifying calculation of value, a prioritized...

Aiming at the shortcomings of traditional slag use height to represent melting temperature, performance desulfurization under different binary alkalinity is tested, and any time image in process binarized obtain realtime area heating process.The change rate obtained from real-time initial area, evaluated by rate. The results show that using whole instead evaluate can comprehensively slag, which not only improves accuracy universality evaluation but also shows rule low-temperature expansion process.

The identification of the origins source rock palaeo-overpressure based on logging response parameters is frequently influenced by presence organic matter. To accurately identify paleo-overpressure origin rocks and employ an appropriate method for paleo-pressure calculation, this study proposes a quantitative approach to assess influence matter content overpressure analysis. findings demonstrate that in Chang 7 shale leads increase acoustic time difference decrease density. After...

In order to improve the output performance of multi-chamber piezoelectric pumps, this paper proposes a novel design for four-chamber series–parallel pump, based on characteristics that parallel chamber structure significantly increases flow rate, and series effectively improves pressure. The theoretical rate pressure pump were calculated, prototype was fabricated. Tests conducted compare liquid transport pumps with three different structures: series, parallel, series–parallel. results show...

The output performance of piezoelectric pumps is not only affected by the structural design but also related to drive signal. To study effect different signals on pumps, this paper takes dual-chamber serial as investigation object, theoretically deduces effective value signal and pump, tests displacement vibrator center, operating noise within range 0–500 Hz, respectively, driven square waves, sine triangular waves (the peak-to-peak values which are all 300 V). results show that at low...

Abstract In this paper, an electromechanical pulse power source with repetitive frequency based on piezoelectric ceramic array and miniature plasma diode is introduced, which drives the system to generate a high-voltage pulse, can strong electromagnetic radiation after interacting gaseous medium in diode. This produce high output energy gain by using low-power DC supply, repetition be electronically adjusted adjusting motor speed. also has advantages of compact structure low cost, wide range...

Firstly, the Energy Hub model integrated power hub, heating hub and cooling is proposed for micro energy grid. According to it, specific modeling of steady state flow carried out. Then, a bi-level optimal dispatch mechanism grid designed with load aggregator business model. The upper-level layer center lower-level allocation aggregators. Case studies are taken on typical summer day solved under time use pricing mechanism. results demonstrate that method general methods analyzing...

With the proliferation of micro energy grids, interactive operation issue between distribution network and grids has been a burning question. This paper proposes coordinated model from perspective social welfare. In order to protect privacy each participant, Alternating Direction Method Multipliers (ADMM) is employed decompose original centralized optimization into distributed local models. A algorithm also proposed solve optimal strategies. Simulation results on modified IEEE 15-node system...

Accurate ultra-short-term power predictions are important for eliminating fluctuations in new energy generation systems. To improve the accuracy of photovoltaic (PV) prediction, this paper proposes an PV prediction method based on improved temporal convolutional neural (TCN) network and feature modeling. First, Spearman coefficient is applied to filter existing meteorological features while simultaneously combining solar illumination three-dimensional modeling panels identify key factors...