Multi-energy supplemental renewable energy system with high proportion of wind-solar power generation is an effective way "carbon neutral", but the randomness and volatility seriously affects safe stable operation grid. With development storage technology, this problem can be effectively solved by configuring storage, how to reasonably configure one key issues due expensive storage. To end, a multi-timescale nested capacity optimization model for multi-energy pumped hydro plant based on...

Concerning energy waste and rational use, this paper studies the optimal scheduling of day-ahead supply community’s demand with a combined cooling, heating, power (CCHP) system in summer. From perspective bilateral costs renewable examines impact storage systems integrated into cogeneration systems. The Gurobi solver is used to optimize residential sides traditional CCHP (T-CCHP) (CCHP-ESS) under insufficient solar power. Subsequently, two arrangements for consumption on user side these are...

The International Classification of Functioning, Disability, and Health (ICF), established by the World Organization (WHO), provides a biopsychosocial framework for understanding addressing human functioning disability. This systematic review examines application ICF in educational contexts across four non-English languages: Chinese, German, Italian, Portuguese. findings reveal significant cross-cultural linguistic variations interpretation implementation, shaped each country’s...

The complementary operation of cascade hydropower (CHP) and photovoltaic (PV) can increase the integration PV power has become a trend in modern systems. However, randomness variability output might cause challenges precisely tracking submitted generation plan CHP-PV system. safety stability receiving-end grid deteriorate. In this paper, multi-time scale dispatch framework with day-ahead intra-day is established for system to address uncertainties. employed provide reliable reference results...

The AC/DC hybrid microgrid is the main trend of microgrids’ development, and dynamic economic dispatch regarded as an important way to ensure safe operation a system. In this paper, model isolated developed with objective minimizing daily cost controllable units. Furthermore, distributed algorithm based on finite-step consensus proposed, in which incremental each generation unit set variable, all units obtain optimal values by exchanging information only their neighbors. addition, converges...

With the rapid development of photovoltaic power generation, how to improve grid connection rate is an urgent problem be solved. This article proposes optimized scheduling method for water and complementary system, taking into account operation strategy pump stations rate. Firstly, a multi-objective optimization model constructed consider both generation output fluctuation, uncertainty analyzed from multiple perspectives. Then, cascade hydropower surrounding in river basin Sichuan as...

The doubly fed variable speed pumped storage (DFVSPS) system is a hydraulically, mechanically, and electrically coupled system, the characteristics of components from water conveyance to transmission line need be fully considered in oscillation analysis. Hence, model included investigate DFVSPS connecting grid via series-compensated line. A small-signal state-space generation mode first established. are studied, dominant state variables for each identified. impact parameters on oscillations...

With an increasing number of renewable energy integrated into the power system, impact intermittent and random wind photovoltaic on system is becoming larger larger. To study probabilistic correlation between different temporal spatial scale, a joint probability model needs to be established. On basis third-order Gaussian mixture model, photovoltaic–wind proposed in this study. By analysing statistical characteristics measured output data, method avoids error accumulation caused by...

In this paper, a distributed hierarchical consensus algorithm is proposed to solve the economic dispatch (ED) problem for isolated AC/DC hybrid microgrid. At first, whole nodes of microgrid are divided into two parts, that is, leadership layer and tracking nodes. The update data through their own feedback elements, while receive information from data. After several iterations, different obtain same state, which realizes dynamic active power balance Besides, AC sub-grid DC can also realize by...

Abstract Electric vehicles are widely used today, however, the phenomenon of sticking and shaking often occurs during starting, crawling shifting. The cause this from perspective motor control was analyzed in paper. In view disadvantages low measurement accuracy position sensor traditional PID control, a dynamic fuzzy speed system based on Kalman filter optimal proposed. principle is simple, with good static performance, which improves vehicle gear shifting, shortens adjustment time.

In the service status monitoring system of catenary support components (CSCs), localization and detection performance for CSCs are directly related to downstream tasks such as anomaly identification defect recognition. However, faces problems multiple categories, multi-scales, small scales, which makes it difficult general object algorithms based on deep learning effectively exert their performance. To address above problems, this paper proposes a new one-step detector multiscale task...

With the continuous development of renewable energy worldwide, issue frequency stability in power systems has become increasingly serious. Enhancing inertia level by configuring battery storage to provide virtual garnered significant research attention academia. However, addressing non-linear characteristics constraints, which complicate model solving, and managing uncertainties associated with load, are main challenges planning for high-proportion systems. In this context, paper proposes a...

Large-scale offshore wind farm cluster grid may bring some influences on static voltage stability. A kind of coordinated reactive power control strategy PMSG connected to system including via VSC-HVDC transmission is proposed. Aiming at the rapid recovery network fault nodes, this makes full use characteristics ac submarine cable and adopts combining local remote mode. Firstly, nodes in AC / DC flexible were determined sensitivity each node was calculated. Secondly, maximum capacity solved...

Due to the issue of no guarantee robustness for flywheel energy storage system (FESS)-based stabilizer designed at one special operation level, an improved method concerning multiple operations was proposed select best installing location, damping control loop, feedback signal robustly and tune FESS-based parameters. Based on linearized model with FESS application torque analysis, maximum all minimum indices under multi-operation conditions is selection index loop signal, that had little...

With the continuous increase of distributed wind power/photovoltaic (PV) grid-connected capacity, uncertainties and PV power outputs have brought new problems severe challenges to day-ahead optimal scheduling microgrids. Based on forecasting error information wind/PV output peak-valley time-of-use electricity price mechanism, from perspective meeting load demand microgrid, this paper proposes a dual-objective optimization model that minimizes operation cost microgrid maximizes accommodation...

Abstract The doubly-fed wind power generator control system consists of multiple PI controllers, each which directly affects the dynamic characteristics system. In this paper, a particle swarm optimization algorithm with improved inertia weight is used to simulate and analyze optimized by algorithm. It found that characteristic curve has advantages small overshoot, fast adjustment speed short time. effectiveness superiority for controller parameters optimization.

Abstract The new high-capacity condenser can better meet the dynamic reactive power demand brought by large-scale development of UHVDC System, and its electrical parameters are bound to be different from traditional condenser. In this paper, influence on transient process sub is analyzed, key optimization extracted. Then, based epri-36 bus system PSASP simulation platform, DC sending receiving with simulated analyzed. results show that in UHV AC / system. hybrid plays a positive role fault response.

This paper takes three kinds of renewable energy sources, namely cascade hydropower, wind power and photovoltaic power, as research objects, explores the short-term scheduling hydro-wind-photovoltaic complementary system based on characteristics forms their operation. Firstly, considering randomness photovoltaic, a typical scenario generation model for is established with help Latin hypercube sampling fast backward reduction algorithm, which concludes that there certain degree...