In this paper, a simple PID controller design method that achieves high performance for wide range of linear self-regulating processes is proposed. Satisfactory responses can be expected with various dynamics, including those low- and high-order, small large dead time, monotonic oscillatory responses. The developed based on second-order plus time modeling technique closed-loop pole allocation strategy through the use root-locus. Simulation examples real-time experiments are given to show...

In this paper, a traveling wave based fault location method is proposed for distribution networks. Before occurs, an intrinsic distance difference matrix (IDDM) established on the characteristics of propagation and topology network. After fault, initial signals are decomposed into several mode function (IMF) by variational decomposition (VMD), first IMF signal analyzed teager energy operator (TEO) to determine arriving time waves. According double-ended arrival at all recorders, (FDDM)...

In this work, firstly we propose an artificial neural network (ANN) based channel modeling and simulation framework to playback a measurement overcome the shortcomings of traditional geometry stochastic modelling (GBSM) approach which is unable predict time or position-varying match with real environment. Secondly, implement on measurements performed at 28 GHz in large waiting hall Qingdao high-speed railway station, China. Thirdly, validate proposed by comparisons scale parameters (LSCPs)...

Demand response (DR) has a great potential to provide balancing services at normal operating conditions and emergency support when power system is subject large disturbances. Effective DR control strategies can help relieve frequency burdens on conventional generators in addition reducing generation transmission investments needed meet peak demands. This paper discusses modeling residential electric water heaters (EWH) households tests their responses with various implementing DR. The...

In this paper, the Gaussian mixture model (GMM) is introduced to implement channel multipath clustering. The GMM incorporates covariance structure and mean information of multipaths, thus it can effectively reveal similarity multipaths. First, expectation-maximization (EM) algorithm utilized search for posterior estimation parameters. Then, variational Bayesian (VB) employed optimize parameters enhance searching ability EM further determine optimal number distributions without resorting...

The charging operation is rapidly becoming a key concern for highway station as the electric vehicle demand traveling rises. This paper proposes price-setting scheme operation, considering distributed renewable energy generators neighboring stations. For this purpose, bi-level approach proposed in to model conflicting objectives between operator and vehicles optimize price their routes. upper level designed operation's profit. lower characterizes behavior of EVs via time-space network model....

In this work, a frame work for time-varying channel modeling and simulation is proposed by using neural network (NN) to overcome the shortcomings in geometry based stochastic model (GBSM) approach. Two NN models are developed of path loss together with shadow fading (SF) joint small scale parameters. The can predict plus SF parameters accurately compared measurement at 26 GHz performed an outdoor microcell. generated replace empirical parameter random numbers GBSM-based framework playback...

In this article, a simultaneous wireless information and power transfer (SWIPT) system with full-duplex (FD) Internet of Things (IoT) nodes is considered investigated. We induce the adaptive interference decoding (AID) strategy as well switch inverter structure antenna selection (SIAS)-based hybrid precoding scheme to SWIPT system. A joint optimization precoder, rule, splitting (PS) ratio problem formulated minimize total transmission power, while satisfying data rate harvested energy...

In this article, with the aim to enhance secure transmission and improve utilization of spectrum resources in Internet Things (IoT), a multicarrier nonorthogonal multiple access (MC-NOMA)-assisted full duplex (FD) network is investigated, which (NOMA) implemented both uplink downlink transmissions. The lightweight low-power physical layer security (PLS) technology employed protect information from eavesdropping. Taking imperfect channel state (CSI) into account, we formulate problem optimize...

Billions of mobile terminals will be deployed in various Internet Things (IoT), which millimeter-wave (mmWave) technology gradually applied. Accurate modeling and simulation wireless channel is the base for efficient design performance evaluation. This becomes more important industrial scenarios, might highly dynamic potentially different from well-investigated cellular deployment scenarios. In this work, a novel semi-deterministic mmWave approach based on optimal neural network (ONN)...

With the large-scale use of electric vehicles (EV), impact charging plug-in EV on distribution power system will be growing in future. The voltage stability network with is more and concerned by people. mechanism large scale analyzed model considering characteristic integrated load proposed this paper. boundary condition calculation instability severity build. Taking two-bus equivalent as an example, different proportions constant impedance load, current are simulated analyzed. total also...

Abstract Purpose Opinion mining and sentiment analysis in Online Learning Community can truly reflect the students’ learning situation, which provides necessary theoretical basis for following revision of teaching plans. To improve accuracy topic-sentiment analysis, a novel model topic is proposed that outperforms other state-of-art models. Methodology/approach We aim at highlighting identification visualization based on clustering various granularity-levels. The method comprised data...

Multiuser multiple input output (MU‐MIMO) wireless communication system provides substantial downlink throughput in millimeter wave (mmWave) by allowing users to communicate at the same frequency and time slots. However, design of optimum beam‐vector for each user minimise interference from other is challenging. In this paper, based on concept signal‐to‐leakage plus noise ratio (SLNR), we analyze ergodic sum‐rate capacity using statistical Eigen‐mode (SE) zero‐forcing (ZF) models with Ricean...

A Cuckoo Search (CS) algorithm based on ant colony is proposed for scheduling problem in permutation flow shop (PFSP). When the raised CS obtains position of bird nest to be updated, it used as a set initial solution optimization (ACO), and ACO search performed very small range. After that, obtained by taken new candidate solution, compared with according fitness degree. better than one generated Lévy flight, latter replaced. Finally, selected, changing abandonment probability. The updated...

In this paper, we investigate power allocation algorithms in a downlink millimeter wave non-orthogonal multiple access (mmWave-NOMA) system, which consists of one base station (BS) and group two-user clusters. Specifically, two optimization problems are formulated to maximize the achievable sum rate (ASR) energy efficiency (EE), respectively, while satisfying individual quality service (QoS) constraints. To ensure stability successive interference cancellation (SIC-stability), specially add...

A high proportion of renewable energy connected to the power grid has caused quality problems. Voltage-sensitive loads are extremely susceptible voltage fluctuations, causing system safety issues and economic losses. Considering uncertainty factor time-varying characteristic, a linearized random ZIP model (constant impedance (Z), constant current (I), (P)) with characteristics was proposed. In order improve voltage-sensitive in day-here stage an active distribution network (ADN), two-stage...

The hybrid dc circuit breaker (HCB) is an important piece of equipment for clearing faults and maintaining the safe operation grids. current transition from a mechanical switch to power electronic has always been crucial issue in HCB, existing HCBs generally require dedicated auxiliary commutation devices, which bring additional cost size. To address key issue, this letter proposes improved thyristor-assisted (TA-HCB) solution. A novel thyristor module integrated into transfer branch not...

With the blooming of online social media applications, Community Question Answering (CQA) services have become one most important resources for information and knowledge seekers. A large number high quality question answer pairs been accumulated, which allow users to not only share their with others, but also interact each other. Accordingly, volumes efforts taken explore questions answers retrieval in CQA so as help finding similar or right answers. However, our knowledge, less attention...

This paper evaluates the performance of a centralized load controller designed to provide intra-hour balancing services (LBSs) using air conditioning (a/c) units in their cooling modes. First, thermal models a/c and control logic central are presented. The objective is aggregated consumption thermostatically controlled appliances (TCAs) follow desired profile for providing LBSs. simulations carried out MATLAB/Simulink environment. A total 1000 modes modeled realistic ±1 MW signal 24 hours...