We consider a dynamic multichannel access problem, where multiple correlated channels follow an unknown joint Markov model and users select the channel to transmit data. The objective is find policy that maximizes expected long-term number of successful transmissions. problem formulated as partially observable decision process with system dynamics. To overcome challenges dynamics prohibitive computation, we apply concept reinforcement learning implement deep Q-network (DQN). first study...

In this paper, we define multicast for an ad hoc network through nodes' mobility as MotionCast and study the delay capacity tradeoffs it. Assuming nodes move according to independently identically distributed (i.i.d.) pattern each desires send packets <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$k$</tex> </formula> distinctive destinations, compare in two transmission protocols: one uses 2-hop...

A method to analyze the angle stability of power system with multiple operating conditions considering cascading failure is proposed in this paper. First, stochastic events such as uncertain operation protection/breaker and hardware failure, condition set determined based on flow transfer theory matrix probability between different calculated. On basis, discrete Markov model established. And then, construct Lyapunov functional containing model, derive robust criterion which satisfies...

An adaptive damping control scheme based on the dual Youla parameterization is proposed in this paper for inter-area low frequency oscillations. First, a set of observer-based feedback controllers are pre-designed using <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${\rm H}_{2} /{\rm H}_{\infty}$</tex> </formula> robust method nominal operating conditions. Second, power system and parameterized...

An adaptive damping control scheme based on the classification and regression tree (CART) using wide‐area signals is proposed. A family of robust multiple‐input multiple‐output controllers are designed offline used in real‐time after current operating point retrieved from phasor measurement unit (PMU) data with CART interpolation. When power system close to a previously set point, only corresponding controller active. not any combined formed. 16‐machine 68‐bus for simulation test. Thyristor...

With the booming development of electric vehicles, number retired power batteries increases year by year. Thus, echelon-use battery becomes focus research. Echelon-use can be applied to energy storage system (BESS) in grid, but its management strategy (EMS) should different from ordinary battery. Based on status health (SOH) battery, an EMS hybrid (HESS) considering is proposed this paper. According SOH each pack, allocate according packs, make play appropriate performance. Finally,...

In view of the potential problems in system such as sustained oscillation and low damping ratio, which are not considered traditional small‐signal stability region (SSSR), an improved SSSR (ISSSR) calculation method based on guardian map is proposed. First, according to theory, mapped from ISSSR negative half‐plane. Then by direct sum operation constituted. Finally, approach, able solve exact Hurwitz matrix, used for fast accurate boundary ISSSR. Simulation tests IEEE 4‐machine 11‐node...

In order to effectively improve the role of battery energy storage system in power system, this paper studies optimal scheduling strategy BESS grid. Firstly, taking minimum exchange cost between grid and penalty node voltage deviation as objective function, an model distribution based on mixed integer programming is proposed. Secondly, when tracks instruction, life attenuation each inconsistent due difference operation conditions. A method considering state health (SOH) Finally, SOC total...

We formulate the problem of robots ferrying messages between statically-placed source and sink pairs that they can communicate with wirelessly. first analyze capacity region for this under ideal conditions. indicate how could be scheduled optimally to satisfy any arrival rate in region, given prior knowledge about rate. then consider setting where is unknown present a coarse-grained backpressure message algorithm (CBMF) it. In CBMF, are matched sources sinks once every epoch maximize...

Concerning the difficulty in quantitatively describing influence of different disturbances on power system stability, a novel composite energy stability region (ESR) is proposed this study based dynamic damping theory. First, considering time‐variant factors oscillation process characteristics system, energized. Thus criteria both disturbance magnitude and operation state obtained. Then, boundary ESR determined space according to criteria, parameter combining small signal region. On basis,...

We consider the problem of joint dissemination multiple contents with different priorities through epidemic routing in a large Delay Tolerant Network (DTN). Specifically, we two files and b to be distributed capacity-limited DTN opportunistic contacts between roaming nodes. The goal is maximize number nodes that receive within delay window, but priority for file over a. This preference can reflect difference popularity or significance files, offering grades service. restriction short...

We consider the problem of deploying a team robots in an unknown, obstructed environment to form multi-hop communication network. As solution, we present unified framework, onLinE rObotic Network formAtion (LEONA), that is general enough permit optimizing network for different utility functions non-convex environments. LEONA adopts principle "optimism face uncertainty" allow optimal configurations efficiently and rapidly without having map link qualities entire area. demonstrate evaluate...

With the increasing demand of communication, it is great necessity to maximize utility vehicular network. VANETs (Vehicular Ad-hoc Networks) especially in context high mobility attract more attention all over world. Pure vehicle-to-vehicle(V2V) networks may relatively have long delay and worse performance compared vehicle-to-infrastructure(V2I) networks, while V2V larger communication area. Consequently, network integrated with 3G significance. In these gateways are generally used as...

In view of the jump characteristic power system, a time-delay stability control strategy that avoids effect progress is proposed in this study. First, Newton–Leibniz formula based on free weighting matrix and system model considering Markov are introduced to differential equation Lyapunov–Krasovskii functional, non-linear minimising controller designed. Then, Schur complement used decouple items algorithm, so inequalities containing transformed standard linear inequalities. Thus, low solving...

With the rapid development of new energy in recent years, its proportion power grid is increasing. The impact randomness, intermittence and negative peak regulation characteristics on more significant. "duck curve" characteristic high obvious, which brings great pressure to load grid. BESS(battery storage system) a kind flexible high-quality resources, has fast output response ability configuration mode. It can significantly improve by cooperating with conventional regulating sources such as...

—Common wide-area signal selection methods hardly guarantee the control effect of a closed-loop system. In addition, signals selected by these could not adapt to different types controllers and have poor robustness against system uncertainty. Addressing problems, an optimal method based on contribution factor is proposed in this article improve damping feedback signals. First, eigenvalues closed loops quantified interval extension theory perturbation theory. On basis, concepts sum are...

In view of the reduced low-frequency oscillation damping effect caused by inaccurate modeling power system due to various uncertainties, a Youla parameterization robust control strategy considering uncertainties is proposed in this article. First, measurement error and parameter estimation are described perturbation matrix, convex polytopic model utilized describe variation operating point. Then, solving H2/H∞ inequalities, matrix gained. Finally, output actual nominal introduced feedback...

This paper investigates the capacity, delay and energy consumption for MotionCast (a multicast mechanism MANETs) with general Markovian mobility. We consider in an extended cell partitioned network under a node mobility model exactly compute pernode throughput capacity. A Two hop relay algorithm is proposed to guarantee such which also achieves better delay-capacity tradeoff, i.e., Θ(N log k). Considering that redundancy can significantly improve delay, we present study influence of on...

In this paper, we propose a novel multi-lane model in Delay Tolerant Network (DTN). Different from traditional ad hoc network, DTN allows nodes to forward information store-and-carry manner so as deal with the absence of end-to-end connectivity. Vehicles are classified into different categories according their everyday routine, called multi-lane. The main purpose is decide reliable next-hop forwarding procedure based on incomplete surrounding information. Furthermore, considering searching...

We formulate the problem of robots ferrying messages between statically-placed source and sink pairs that they can communicate with wirelessly. first analyze capacity region for this under both ideal (arbitrarily high velocity, long scheduling periods) realistic conditions. indicate how could be scheduled optimally to satisfy any arrival rate in given prior knowledge about rates. then consider setting where rates are unknown present a coarse-grained backpressure message algorithm (CBMF) it....

With a large number of new energy sources connected to the grid, inverse peak characteristics their power generation have brought great difficulties grid scheduling. In recent years, storage technology has gradually developed and matured, its dual charge discharge provide solution problem consumption. However, current load shifting scheduling for is mainly solved by intelligent optimization algorithm, which disadvantage low solving efficiency risk falling into local optimal solution....

With the rapid development of new energy in recent years, battery storage system (BESS) is more and widely used power system. The inconsistency single will have a great impact on operation BESS. At same time, with increase service time pack, this become greater greater. Therefore, some strategies should be adopted for management Existing studies not fully considered efficiency conversion (PCS). In paper, greedy algorithm model to solve mathematical programming goal consistency state charge...

In the long-term operation of a megawatt-scale energy storage plant composed series-parallel connections, single batteries will have different degrees inconsistency problems. To solve this problem, paper proposes comprehensive assessment method based on consistency in scaled power stations. According to indexes such as battery voltage and polarity difference series connection between modules, evaluation criterion monomer was established. Based historical data system, is used analyze an...