The electric power grid wide-area monitoring system (WAMS) has been extended from the transmission to distribution level. As first WAMS deployed at level, frequency network FNET/GridEye uses global positioning system-time-synchronized monitors, called disturbance recorders, capture dynamic behaviors. In this paper, latest developments of monitor design and state-of-the-art data analytics applications are introduced. Its innovations uniqueness also discussed. Thanks its low cost, easy...

This paper studies the way to invasion of smart grid networked systems - replay attacks, which can result in grid, while not being detected by normal anomaly detection mechanisms. To be able resist attack, designs a new strategy that effectively improve chances repeat attacks for system controller, but it also will sacrifice some level performance as price.

DV-Hop is a widely used positioning technology in WSN. Owing to the problem of low accuracy, based on wireless sensor network technology, an improved sparrow search algorithm (SSA) presented. The improvement mainly has two aspects. First, double communication radius method adopted modify minimum hop count between nodes reduce estimated distance error; Secondly, this does not use commonly least squares method, but uses SSA estimate nodes' position; At same time, applies Levy flight strategy...

Power systems are continuously exposed to various disturbances, such as generation trip, line etc. These variations may initiate oscillations that could jeopardize the system stability if not well damped. The distribution-level phasor monitoring provides a low cost solution collect frequency, phase angle, and voltage magnitude data during oscillations. By these parameters, dynamic behavior of be observed. In this paper, some sample oscillation cases, excited by different types presented...

With the rapidly increasing computing demand, data centers become more and power-hungry, which incurs substantial electricity cost. Meanwhile, due to time-dependent demand preference, power grid is suffering high load variations, results in a large profit loss. In this paper, we consider cost-efficient workload scheduling with coordination between cloud service provider operating multiple geo-distributed smart grids. The aim explore flexibility of center demands reduce cost smooth variations...

In power grid construction projects, ensuring the safety of workers by eliminating potential risks has always been important yet difficult. Thanks to breakthrough in deep learning, it becomes possible adopt learning based object detection technologies enable intelligent monitoring on sites. However, due complex terrain site, there is a lack dataset scenes. this paper, high-quality constructed. order reduce expensive annotation work, we propose contrastive self-supervised pretrain feature...

Cooperative communications (CC) based on network coding (NC) can significantly increase the capacity of wireless networks. In this paper, we investigate how to apply NC in multi-hop networks with multiple relay nodes and sessions achieve more practical general CC NC. Based NC, consider jointly optimize node selecting, scheduling flow routing a network. We not only construct mathematical model but also formulate maximum-minimum (Max-Min) optimization problem for it. Then reformulate solve it...

It has been demonstrated in previous studies that nation-wide or largely synchronous societal activities have impacts on the power grid frequency responses. This paper investigates NFL Super Bowl games as an example to evaluate influence of synchronized human system using data collected from a wide-area monitoring network (FNET/GridEye). The statistics and plots several fluctuation phenomena relevant analysis are presented. Featured characteristics drawn detected during discussed.

Virtual Network Embedding (VNE) is a key step towards network virtualization. In this paper, we first introduce new link interference metric for each to quantify the caused by its bandwidth scarcity accept VN requests, and then an Interference-based VNE (I-VNE) algorithm proposed. Benefited from metric, I-VNE can jointly consider temporal spatial topology information of networks, tries embed virtual request with low avoid rejecting future requests. Our simulations show that, significantly...

With the fast development of wireless networks and devices, designing effective routing algorithms considering intermittent connectivity without end-to-end path is desirable. In this paper, we present a probabilistic delay (PDR) scheme that takes transmission delay, historical information connection prediction future into consideration. Depending on two different connection, connected unconnected, deduce prediction-functions correspondingly which can predict more precisely. Simulation...

Delay Tolerant Networks are with intermittent connectivity, high latency and without end-to-end paths from the source to destination. Message delivering in these networks is characterized by store-and-forward. So sequence of message discarding important performance routing algorithms. However, there little effort concentrating on buffer management optimization, which can effectively utilize limited resource. In this paper, we employ optimal theory propose a novel strategy named Optimal...

Increased penetration levels of wind generation and retirements conventional plants have caused concerns about a decline system inertia primary frequency response. To evaluate the impact power on inertial response, simulation scenarios with different are developed in PSS®E based U.S. Northeast Power Coordinating Council (NPCC) system. A user-defined electrical control model is also introduced to provide governor doubly-fed induction generator (DFIG)-based generations. An extreme case 100%...

Nowadays, data centers consume substantial power, which takes up a considerable portion of local power supply (e.g., smart grid). In this paper, we leverage center workload scheduling for the coordination between and grid, aiming to reduce electricity cost smooth load variation grid simultaneously. We first build models at generation grid. formulate objective function as weighted sum penalty caused by scheduling. Using dual decomposition method, then derive optimal offline solution. To...

Currently, there are two main kinds of routing strategies in delay tolerant networks, including single-copy forward and multi-copies replication routing. In this paper, we present a novel scheme called Single-Copy Replication (SCR) which has higher delivery ratio than as well lower overhead strategy. SCR only duplicates bundles to the node selected next hop. Based on idea strategy, Time Interval Protocol (TIP) is designed select hop according time interval between sender destination. Also,...

This paper presents a procedure for constructing the dynamic equivalent of large power system based on Frequency Monitoring Network (FNET) measurements. It consists determination coherent regions, generator and load aggregation, network reduction. The regions are determined from FNET voltage angle responses using divisive hierarchical k-means clustering algorithm. Generator aggregation detailed model is performed. applied to US Eastern Interconnection (EI) by building its in PSS/E....

Delay Tolerant Networks (DTNs) are characterized by intermittent connectivity, high delay and without end-to-end path from the source to destination. The fundamental way of message routing in DTNs is store-and-forward. Thus, mal-behaving nodes networks, which uncooperative relay messages, will significantly undermine performance. In this paper, we propose a novel congestion control solution for with named Incentive Multi-paths Routing Alternative Storage (IMRASFC). IMRASFC firstly...

Delay-tolerant networks (DTNs) have the capacity to interconnect devices in roomy regions unlike todaypsilas networks. In this paper, we propose a routing scheme named time interval (TIR) increase deliver ratio and decrease latency DTNs. TIR, only using limited local information as well simple algorithm, chooses node transmission range with least among neighbors next hop. Due duration of connections, bundle-transfer strategies (BTS) mechanisms ensure that TIR sends bundle destination highest...

In this paper, we propose a throughput-maximum resource provision scheme in the OFDMA-based Wireless Virtual Network (WVN). The proposed takes dynamics of both traffic arrivals and wireless channels into consideration. Furthermore, consider more flexible service contract where average is guaranteed for each slice. As it practically impossible to know future arrival channel information, employ Lyapunov Optimization develop an online algorithm. algorithm performs joint subcarrier power...

Abstract With the increase of number users and complexity services, only single communication network cannot meet all its requests in power networks. Therefore, heterogeneous networks are an effective solution. Vertical handoff (VHO) is important step process convergence. An appropriate algorithm can improve quality service (QoS) users. In order to solve problem congestion caused by a large connecting partial networks, vertical based on load balance proposed. Among that users’ requirements,...

Many European countries have taken steps toward a Supergrid in order to transmit large amount of intermittent and remote renewable energy over long distance load centers. In the US, as expected increase generation electricity demand, similar problem arises. A potential solution is upgrade transmission system at higher voltage by constructing new overlay grid. This paper will first address basic requirements for such an Potential technologies also be discussed. multi-terminal VSC HVDC model...

The main character of Delay Tolerant Networks (DTNs) is that there not an end-to-end path from the source node to destinations due intermittent connections and mobility nodes. In this paper, we construct mathematic model based on queue with vacation theory analyze impact buffer management strategy DTN multicast routing, then compute minimal delay maximal according model; at last, do simulation On-demand Routing, Dynamic Tree Routing Static algorithms, results show our runs well.