Fast-acting reactive power support from distributed generations (DGs) is a promising approach for tackling rapid voltage fluctuations in distribution networks. However, the regulation range via of DGs alone narrow especially networks with high resistance-reactance ratio. In this paper, randomized algorithm proposed to improve profile coordinated active and DGs. To end, first variables quadratically constrained quadratic programming problem on control are partitioned into disjoint subsets,...

The design and production of active, durable, nonprecious electrocatalysts toward alkaline hydrogen oxidation evolution reactions (HOR/HER) are extremely appealing for the implementation economy, but remain challenging. Here, we report a facile electric shock synthesis an efficient, stable, inexpensive NiCoCuMoW multi-element alloy on Ni foam (NiCoCuMoW) as bifunctional electrocatalyst both HOR HER. For HOR, current density could reach ∼11.2 mA cm

Due to high penetration of distributed energy resources, voltage violation has become one the most critical issues in control modern power systems with integration renewable generations (DGs). In this paper, an online approach is proposed regulate radial distribution networks via DGs. By fully considering topological properties network, successfully decomposes global regulation problem into a sequence local reactive optimization subproblems low dimensions. It been further shown that optimal...

The classical power allocation/reallocation faces difficult challenges in a future grid with great many distributed generators and fast fluctuations caused by high percentage of renewable energy. To perform reallocation large number participants disturbances, hierarchical scheme based on partition framework is proposed. In the proposed scheme, naturally partitioned into certain regions, total energy demand disturbances automatically estimated rather than given advance. Besides, centralized...

As a link connecting the environmental perception system and decision-making system, accurate obstacle trajectory prediction provides reliable guarantee of correct by autonomous vehicles. Oriented toward mixed human-driven machine-driven traffic environment, vehicle algorithm based on an encoding–decoding framework composed multiple-attention mechanism is proposed. Firstly, directed graph used to describe vehicle–vehicle motion dependencies. Then, calculating repulsive force between vehicles...

With the development of automatic driving technology, it is crucial to test and certify ability vehicles. Public road testing an essential part certification. However, public consumes a significant amount human material resources, low efficiency has always been major limitation this certification scheme. Because probability encountering typical valuable natural scenarios not high when tested vehicle in traffic flow. At same time, lack efficient planning for route results vast majority time...

The vessel heave motion caused by wave action increases the difficulty of installing offshore wind equipment. Onboard compensation devices have therefore become increasingly critical in ensuring stability and safety gangway working platform. This study accordingly improves effect such developing a model designing an optimized backstepping control method. First, system including servo motor electric cylinder is established using mechanism Second, method designed to track motion, particle...

To minimize power losses in microgrids, we concentrate on reactive compensation by microgenerators connected to microgrid via electronic interfaces. Comparing exits works, not only the constraint of balance, but also bounded capacity microgenerator is taken into account. We propose a distributed algorithm for problem with fully communication network, solve optimal microgrids. Case study illustrates proposed can effectively problem.

In recent years, autonomous driving technology has developed rapidly in the fast lane, but its application and popularization still face many challenges. How to test verify system is a technical bottleneck. Scenario basis of automatic test, which brings brand-new solution problems based on mileage test. Therefore, construction scenario library essential. this paper, method both vehicle roadside proposed. A set acquisition with powerful perception that can continuously collect data are up,...

Let $0<\alpha<1$ and $\frac{1}{q}=1-\alpha$. We first obtain that the function $\omega :\mathbb{Z} \rightarrow (0,\infty)$ belongs to weight class of $\mathcal{A} (1,q)(\mathbb{Z})$ if only discrete fractional maximal operator $M_{\alpha}$ or Riesz potential $I_\alpha$ is bounded from $l_{\omega}^{1}(\mathbb{Z})$ $l_{\omega^q}^{q,weak}(\mathbb{Z})$. Then for $p=\frac{1}{\alpha}$, we further $\omega$ (p,\infty)(\mathbb{Z})$ has a property resembling mean oscillation. Moreover, give another...

Abstract With modern society’s increasing reliance on electric energy, rapid growth in demand for electricity, and the increasingly high requirements power supply quality, sudden outages are bound to cause damage people’s regular order of life normal functioning society. Currently, commonly used emergency protection equipment is mainly based diesel generator sets, while there also flywheel energy storage application protection. In today’s society, we strongly advocate green, energy-saving,...

The paper constitutes a systematic experimental investigation into the effect of fog on sparkover characteristics rod-plane gaps with special reference to power frequency voltages. tests covered gap spacings in range 15-400 cm. Special care was taken separate effects mode voltage application from those due physical changes under investigation. Tests were also performed variety air humidity conditions and artificial rain. Finally, switching impulses direct both polarities are reported.

Pollution source parameter identification (PSPI) is significant for pollution control, since it can provide important information and save a lot of time subsequent elimination works. For solving the PSPI problem, large number sensor nodes be rapidly deployed to cover area form wireless network (WSN). Based on measurements WSN, least-squares estimation methods solve problem by searching solution that minimize sum squared measurement noises. They are independent noise distribution, i.e.,...

To cope with the challenges due to increasing peak load, an optimal day-ahead scheduling problem for social welfare maximization is proposed, in which not only comfort level of consumers and costs power suppliers but also losses transmission operation owners are taken into account. Then this reformulated solved via alternating direction method multipliers (ADMM), by fast convergence guaranteed privacy participants ensured, a distributed manner. Specifically, proposed scheduling, hourly...

The classical economic dispatch problem faces difficult challenges in a future smart grid with great many distributed generators and fast power fluctuations due to high percentage of renewable energy. traditional centralized scheme can not cope large number generators, the convergence rate purely control decreases increase network size. A hierarchical based on partition framework is proposed, which local optimizations regions optimization among are coupled solve problem. Thus agents part...

This paper investigates the consensus problem for general second-order multi-agent systems via distributed impulsive control. Based on eigenvalue analysis and graph theory, a necessary sufficient conditions of under directed is derived. In addition, two simpler undirected are given to show relationship period, control gains, eigenvalues among Laplacian matrix, system matrix agents. Finally, numerical example performed illustrate effectiveness theoretical analysis.

The operation economy of distribution network is an important part the economic evaluation network, which directly affects power consumption efficiency users. With rapid development mobile energy storage technology and access multiple types distributed generation to low-voltage how quantitatively evaluate loss analyze different forms has guiding significance for planning system in future. According typical topology AC DC systems with access, a comparative model based on whole link...