Big data has potential to unlock novel groundbreaking opportunities in power grid that enhances a multitude of technical, social, and economic gains. As technologies evolve conjunction with measurement communication technologies, this results unprecedented amount heterogeneous big data. In particular, computational complexity, security, operational integration into system planning frameworks are the key challenges transform large dataset actionable outcomes. context, suitable analytics...

Understanding community assembly mechanisms along the geographical gradients is of great importance in ecological research. The Taihang Mountains are intersection north and south flora, with abundant species complex structures, which provide multiple services. However, phylogenetic structure composition woody plants still not very well understood. In this study, 35 forest dynamic plots were established natural distribution areas from 850 to 1850 m above sea level. We explored pattern...

Pumped storage hydro (PSH) based generation of electricity is a proven grid level technique. A new configuration i.e., adjustable speed PSH (AS-PSH) power plant modeled and discussed in this paper. Hydrodynamic models are created using partial differential equations the governor topology adopted from an existing, operational AS-PSH unit. Physics-based simulation both hydrodynamics system dynamics has been studied individually past. This paper demonstrates co-simulation unit between penstock...

This paper presents a real-time simulation with hardware-in-the-loop (HIL)-based approach for verifying the performance of electrolyzer systems in providing grid support. Hydrogen refueling stations may use to generate hydrogen and are proposed have potential becoming smarter loads that can proactively provide services. On basis experimental findings, balance plant observed high level controllability hence add flexibility from demand side. A generic front end controller (FEC) is proposed,...

Growing trends in the deployment of inverter‐based renewable energy will decrease inertia and frequency control capability electric power systems by replacing conventional plants; thus, future might be dynamic. This study proposes a capability‐coordinated (CCFC) scheme virtual plant (VPP) including adjustable‐speed pumped storage hydropower (AS‐PSH), wind (WPP), an system to support nadir reduce steady‐state error frequency. The CCFC is based on hierarchical‐control structure which organises...

This paper proposes a dynamic frequency support scheme of supercapacitor energy storage system (SCESS) in coordination with run-of-the-river-based pumped hydropower (PSH) to enhance the short-term stability power that has high penetration renewable energy. To achieve this, proposed coordinated controller (CFC) enables SCESS and PSH plant provide response. The CFC employs droop characteristic parallel an integral distribution function. determines production for regulation employing variable...

Microgrid (MG) islanding is considered as an effective measure to minimize power outage and therefore maximize usage of renewable energy resources. One the most challenging technical difficulties associated with out-of-phase reclosing caused by asynchronism MG electric system (EPS). In this paper, a novel control methodology proposed synchronize main grid so that smooth transition from islanded mode grid-tied can be guaranteed. Synchronization achieved eliminating voltage phase angle...

This paper presents a real-time simulation and hardware-based approach for systematic integration of Distributed Energy Resources (DERs) in advanced distribution grids with special focus on resilience. Advanced are considered to be functionally more sophisticated than traditional ones. The desirable functionalities include – reconfiguration, sensing, DERs, self-healing, etc. Some these currently being realized by microgrids as well. However, it is not feasible convert each section grid into...

Optimal active power dispatch is a well-studied problem in system research. The conventional solutions are usually centralized, thus inflexible and susceptible to single-point-failure. In this paper, fully distributed solution for optimal proposed. proposed can consider not only constraints of supply-demand balance generation bounds but also the line flow constraints. To computational efficiency effectiveness, DC was used check constraint violations. way, both optimality feasibility obtained...

Hybrid Energy Storage System has been widely applied in aerospace, electric vehicle, and microgrid applications. The advantages are that they include complimentary technologies with both high power energy capabilities. HESS have the potential to be useful bulk systems, for example increase value of produced by variable generation resource through enabling participation ancillary service markets. Actualizing benefits HESSs requires optimizing combined ramping capability aggregated resources....

Natural regeneration occupies an important position in forest ecosystems and is affected by various factors. Exploring natural its influencing factors helpful to understand the community dynamic. Evergreen broad-leaved essential zonal vegetation type China. However, of evergreen forests northernmost margin subtropical zone has not been reported. Here we investigated 22 observed variables, selected four categories latent variables stand factor, topographical soil factor tree diversity as...

Microgrid power systems strike a balance between maintaining system stability and insuring high utilization efficiency of pulsed loads. In microgrids, loads' power-consumption challenges the generators' low generation capacity. Super capacitors were proposed to replace generators for powering Charging super capacitor is expected be complete rapidly without affecting stability. This paper takes input constraints into account computing optimal control reference signal. also applies generalized...

Supercapacitor technology has reached a level of maturity as viable energy storage option available to support modern electric power system grid; however, its application is still limited because capacity and the cost commercial product. In this paper, we demonstrate transient models supercapacitor plants operating in coordination with run-of-the-river (ROR), doubly-fed induction generator hydropower (HPP) using conceptual control architecture. A detailed model device coupled grid via...

In the marine gear system, vibration of gears is transmitted to ship foundation through shafts, bearings, housing, and isolators, then underwater noise generated. Analyzing transfer properties identifying critical path can provide guidance low-noise design system. this paper, a coupled gear-housing-foundation dynamic model proposed for flexible supported in which flexibility each subsystem coupling relationship between them are taken into account. The transferring process divided different...

The goal of the study in this paper is to analyze impact charging an energy storage supplying power pulsed load integrated system onboard a ship. work focuses on developing disturbance metrics based control scheme for maintaining optimal balance between rapidity ES and meeting quality requirements, at same time, Medium Voltage Direct Current (MVDC) IPS.

Supercapacitors are finding wider applications in modern power systems due to a controllable fast dynamic response. Use of electronically interfaced supercapacitors for frequency support is proven technique. In practical the heat generated from Equivalent Series Resistance (ESR) can significantly reduce life supercapacitor. Hence thermal issues must be addressed optimal operation. It infeasible use traditional optimization control methods mitigate impacts frequent cycling lack active...

Since the introduction of Plug-in Electric Vehicles (PEVs), scientists have proposed leveraging PEV battery packs as distributed energy resources for electric grid. charging can be controlled not only to provide transportation but also grid services and facilitate integration renewable generation. With generation increasing at an unprecedented rate, most which is non-dispatchable intermittent, concept using PEVs controllable loads appealing utilities. If incentivized suitably, this could...

A thyristor-controlled supercapacitor energy storage (SES) system is proposed in this work to improve the transient stability of a synchronous generator located power network. To check how effective SES augmenting is, its performance compared that superconductive magnetic (SMES) system. Both symmetrical and unsymmetrical faults are considered Simulation results demonstrate effectiveness validity method enhancing generator. Moreover, found be better than SMES. Overall, it can inferred...

Optimal scheduling of hydrogen production in dynamic pricing power market can maximize the profit producer; however, it highly depends on accurate forecast consumption. In this paper, we propose a deep leaning based forecasting approach for predicting consumption fuel cell vehicles future taxi industry. The cost is minimized by utilizing proposed tool to reduce produced during high on-peak hours and guide producer store sufficient low off-peak hours.

Elastic rods are commonly seen in our daily life. Although humans sensitive to the shape change of rods, it is not intuitive estimate external forces applied generate deformation. We propose a method interactively track elastic linear objects by using Cosserat rod model regulate captured noisy points. develop framework based on particle filters work with physics-based model, turning inverse physics problem into forward simulation and search problem. show that proposed method, we can...

With the development of urbanization, environment is key to safety residents’ life and health United Nations’ Sustainable Development Goals (SDGs). Urban environmental changes microclimate problems have attracted widespread attention. For SDGs, monitoring urban more accurately effectively ensuring particularly important when designing applications that can replace traditional fixed-point or pollution monitoring. Based on BeiDou Navigation Satellite System platform, this paper proposes a...