Simplified methods of static free head stiffness the semi-rigid foundation under lateral loads were limited to flexible or rigid behavior by critical length piles. This would lead errors when predicting dynamic performance their upper structures in OWT Systems. paper presents a comprehensive analysis pile without considering length. Firstly, case studies using energy-based variational method encompassing nearly twenty thousand cases conducted. These involved different types foundations,...

Considering the impact of restriction weight responsibility consumption on promotion local renewable energy and cross-provincial transaction energy, this study examines multi market clearing decision-making problem. Additionally, it proposes constructs intraprovincial interprovincial bi-level model. The objective function upper model is to minimize operation cost power at level considering constraint responsibility, lower purchase level. In two-level model, two levels are coupled with each...

With the large-scale development of renewable energy sources such as wind and solar energy, grid connection poses a certain threat to security stability power system, also brings great challenge economic dispatch distribution network. Traditional single dispatching methods load demand response or network reconfiguration alone cannot meet needs safe operation This article proposes an method for networks with dispersed considering reconfiguration, establishes model objective function...

The availability of accurate day-ahead electricity price forecasts is pivotal for market participants. In the context trade liberalisation and harmonisation in European markets, forecasting becomes difficult participants to obtain because requires consideration features from ever-growing coupling markets. This study provides a method exploring influence on prediction. We apply state-of-the-art long short-term memory (LSTM) deep neural networks combined with feature selection algorithms...

Static voltage stability has become one of the significant risks faced by large-scale renewable energy integration. However, traditional methods for static analysis are often overly complex. This paper constructs an equivalent impedance model integrated distribution power systems, proposing a method systems based on index. been verified to be applicable not only single-infeed system but also multi-infeed system. Furthermore, is conducted influence integration capacity, location energy, and...

Accurately and efficiently evaluating the influence of pile–soil interaction on overall natural frequency wind turbines is one difficulties in current offshore power design. To improve structural safety reliability turbine (OWT) systems, a new closed-form solution method OWTs considering interactions with highly effective calculations established. In this method, Hamilton’s principle equivalent coupled spring model (ECS model) were firstly combined. theory, Timoshenko beam assumption...

Ant colony algorithm (ACA), inspired by the food-searching behavior of ants, is an evolutionary and performs well in discrete optimization. algorithms have been recently suggested for short-term load forecasting (STLF) a large number researchers. In this paper, Improved ant clustering (IACC) based on was put forward. IACC, each data represented ant, making use parallel optimization characteristics ability volatile quotient method to adoptively change amount information, with improvements...

The analog neural network to spiking (ANN-to-SNN) conversion is an effective method for improving the performance of SNNs. However, existing mainstream (rectified linear unit, ReLU) still face problem weak ability adversarial attacks. In this brief, inspired by radial basis function and "near enhancement far inhibition (NEFI)" properties biological neurons, a threshold switching (TS) memristor based neuron (RBSN) circuit proposed ANN-to-SNN implementation. results indicate that RBSN can...

This paper applies a neural-network-based approximate dynamic programming (ADP) method, namely, the action dependent heuristic (ADHDP), to an industrial sucrose crystallization optimal control problem. The is nonlinear and slow time-varying process. It quite difficult establish precise mechanism model of because complex internal interacting variables. We developed neural network based on data from actual sugar boiling process factory. ADHDP learning- approximation-based approach which can...

In this article, we propose a new multistage <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">semianticipativity</i> model based on the distributionally robust optimization framework for dc power flow unit commitment problems with uncertain wind power. The proposed constructs flexible ambiguity set considering predicted power, which can flexibly adjust robustness of according to reliability information. Moreover, approximation method principal...

在传统的固相法的基础上开发了新型复合共沉淀法制备LiNi0.5Mn1.5O4材料．新型复合共沉淀法采用（NH4）2CO3和（NH4）2C2O4共同作为沉淀剂，通过控制共沉淀反应条件，得到了具有均匀球形形貌的沉淀物颗粒．再通过与饱和氢氧化锂溶液的水热反应及高温反应，最终制备出具有球形次级形貌和纯相尖晶石结构的LiNi0.5Mn1.5O4材料．电化学测试表明，制备的LiNi0.5Mn1.5O4具有优异的电化学性能，其初始容量达到了141．4mAh·g^-1．在0．3C、1C和3C倍率下经过200次循环后的容量分别为136．0mAh·g^-1（96．3％）、128．6mAh·g^-1（94．4％）31：1113．9mAh·g^-1（91．1％）．通过高温反应及特殊的冷却处理，LiNi0.5Mn1.5O4在4．0V低压区平台的容量损失得到了有效抑制．更重要的是，通过控制合成过程中的关键步骤，可实现半定量化控制材料结构中的原子有序排布程度，进而得到具有高能量密度和高功率密度的两种LiNi0.5Mn1.5O4材料，其能量密度和功率密度分别达到了648．6mWh·g^-1和7000mW·g^-1以上．

The transient voltage security and economy of power grid could be coordinated by reasonably choosing the installation locations capacity static var compensator (SVC). Quantitative assessment method has been proposed to identify weak areas key faults causing unsafe in system. Based on quantitative analysis, comprehensive improve margin is put forward used reflect effects SVC performance cost ratio defined for optimally configuring according largest principle ratio, process described detail....

For large-scale distribution networks (DNs) with distributed generations (DGs), the conventional centralized Volt/Var optimization and control (VOC) have high demand for online computing resources efficiency. This paper proposes a new decision-making method VOC (D-VOC) based on two-layer collaborative architecture. First, equivalent load system on-load tap changer (OLTC), this studies how to minimize active power loss reach target voltage of side system. Second, concept virtual soft...