scholarly journals Adaptive Algorithm of a Tap-Changer Controller of the Power Transformer Supplying the Radial Network Reducing the Risk of Voltage Collapse

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5403
Author(s):  
Robert Małkowski ◽  
Michał Izdebski ◽  
Piotr Miller
Keyword(s):  
Real Time ◽  
Power Transformer ◽  
Wind Farms ◽  
Voltage Collapse ◽  
Real Time Control ◽  
Time Data ◽  
Medium Voltage ◽  
Time Control ◽  
University Of Technology ◽  
Technical Solutions

The development of renewable energy, including wind farms, photovoltaic farms as well as prosumer installations, and the development of electromobility pose new challenges for network operators. The results of these changes are, among others, the change of network load profiles and load flows determining greater volatility of voltages. Most of the proposed solutions do not assume a change of the transformer regulator algorithm. The possibilities of improving the quality of regulation, which can be found in the literature, most often include various methods of coordination of the operation of the transformer regulator with various devices operating in the Medium-Voltage (MV) network. This coordination can be decentralized or centralized. Unfortunately, the proposed solutions often require costly technical resources and/or large amounts of real-time data monitoring. The goal of the authors was to create an algorithm that extends the functionality of typical transformer control algorithms. The proposed solution allows for reducing the risk of voltage collapse. The performance of the proposed algorithm was validated using multivariate computer simulations and tests with the use of a physical model of the distribution network. The DIgSILENT PowerFactory environment was used to develop the simulation model of the proposed algorithm. Then, tests were conducted on real devices installed in the LINTEˆ2 Laboratory at the Gdańsk University of Technology, Poland. Selected test results are included in this paper. All results have shown that the proposed algorithm makes it possible to increase the reserve of the voltage stability of the node, in which it is applied, thus mitigating the risk of a voltage collapse occurring. The proposed algorithm does not require complex and costly technical solutions. Owing to its simplicity, it has a high potential for practical application, as confirmed by the real-time control experiment in the laboratory.

scholarly journals Vision based hardware-software real-time control system for autonomous landing of an UAV

2020 ◽  
Author(s):  
Krzysztof Blachut ◽  
Hubert Szolc ◽  
Mateusz Wasala ◽  
Tomasz Kryjak ◽  
Marek Gorgon
Keyword(s):  
Control System ◽  
Real Time ◽  
Heterogeneous Computing ◽  
Computing System ◽  
Video Stream ◽  
Real Time Control ◽  
Time Data ◽  
Autonomous Landing ◽  
Computing Platform ◽  
Time Control

In this paper we present a vision based hardware-software control system enabling autonomous landing of a mul-tirotor unmanned aerial vehicle (UAV). It allows the detection of a marked landing pad in real-time for a 1280 x 720 @ 60 fps video stream. In addition, a LiDAR sensor is used to measure the altitude above ground. A heterogeneous Zynq SoC device is used as the computing platform. The solution was tested on a number of sequences and the landing pad was detected with 96% accuracy. This research shows that a reprogrammable heterogeneous computing system is a good solution for UAVs because it enables real-time data stream processing with relatively low energy consumption.

Design and Application of a Communication System Based on Codesys

2014 ◽  
Vol 1044-1045 ◽  
pp. 1113-1117 ◽  
Author(s):  
Jia Liu ◽  
Wei Ping Fu ◽  
Lei Zhou ◽  
Na Qie ◽  
Wen Yun Wang
Keyword(s):  
Real Time ◽  
Communication System ◽  
Data Exchange ◽  
Intelligent Robot ◽  
Real Time Control ◽  
Time Data ◽  
Time Control ◽  
Physical Channel ◽  
Soft Plc ◽  
Set Up

A model of wireless network data interchange was built to solve cross-platform exchange data in intelligent robot. In the framework of embedded Soft-PLC - Codesys real-time operating system, we apply Socket network programming technology based on TCP/IP communication protocol to set up a physical channel between VC++ platform and the Codesys platform. It realizes the real-time data exchange between host-computer and slave-computer uploaded embedded operation system of robot. A special multi-threaded processing class was developed to enhance the multi-tasking allocation ability of the system. Exchanged data was packaged and analyzed to ensure the accuracy of transmitted data. The experiment shows built communication system platform is justifiable, and data transmission speed is less than 10ms. It is able to meet the needs of real-time control in intelligent robot.

Intelligent Navigation of Assembly Stations Based on Real-Time Manufacturing Information

2013 ◽  
Vol 432 ◽  
pp. 442-446
Author(s):  
Teng Yang ◽  
Ying Feng Zhang ◽  
Jun Qiang Wang
Keyword(s):  
Real Time ◽  
Rfid Technology ◽  
Source Information ◽  
Real Time Control ◽  
Time Data ◽  
The Real ◽  
Time Control ◽  
Manufacturing Information ◽  
And Control ◽  
Real Time Optimization

In order to improve the real-time control and optimization of assembly process, this article takes the basic execution unitassembly station as the study subject. Based on real-time manufacturing information, the concept of the intelligent navigation of assembly activities is put forward. Through the application of RFID technology to capture the multi-source information, three kinds of navigation services, namely real-time assembly operating guidance service, collaborative manufacturing service among assembly stations and real-time optimization service of task queue, are designed to implement optimal navigation. The presented concept and services will facilitate the real-time data driven process monitor and control between the assembly line and assembly station.

scholarly journals Efficient Optimization of Large Wind Farms for Real-Time Control

2018 ◽  
Author(s):  
Jennifer Annoni ◽  
Christopher Bay ◽  
Timothy Taylor ◽  
Lucy Pao ◽  
Paul Fleming ◽  
...  
Keyword(s):  
Real Time ◽  
Wind Farms ◽  
Real Time Control ◽  
Time Control ◽  
Large Wind

Power Control Based on Pub/Sub for DFIG Wind Farm

2011 ◽  
Vol 343-344 ◽  
pp. 33-37
Author(s):  
Ling Ling Qiao ◽  
Zhi Gang Tian
Keyword(s):  
Power Control ◽  
Real Time ◽  
Wind Farm ◽  
Wind Farms ◽  
Real Time Control ◽  
Control Loops ◽  
Loosely Coupled ◽  
Time Control ◽  
Large Wind

Power control in large wind farm has a big impact on the Grid, especially in low connectivity ratio. Publish subscribe technology is asynchronous loosely coupled, and multi-to-multipoint communication as adapted for large distributed real-time control of network communications needs in the wind farm. This paper presents publish subscribe-based real-time power command-delivery method. It is well used to deliver the control of wind farm, reducing the time-delay in control loops. Simulation results show that the method further improves the quality of the power control of common coupling in large wind farms.

Real-Time Semi-Physical Simulation of Industry Design System Based on Virtual Reality Technology

2014 ◽  
Vol 607 ◽  
pp. 413-416 ◽  
Author(s):  
Jun Liu ◽  
Lin Xuan Zhang ◽  
Bing Cui
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
Physical Simulation ◽  
Design System ◽  
Joint Control ◽  
Real Time Control ◽  
Time Data ◽  
Time Control ◽  
Simulation Based ◽  
Virtual Prototyping Technology

Research how to realize real-time hardware in the loop (HIL) of industry design system by utilizing a variety of virtual reality (VR) hardware and software. In this paper, it introduces VR and virtual prototyping technology, and then proposes joint control and simulation based on ADAMS / Aircraft, Simulink, Flightgear three software. Moreover, the virtual scene, data gloves and real-time semi-physical simulation are analyzed and researched; finally as an example, build a real-time semi-physical simulation platform of the landing gear system for multi-wheel and multi-strut aircraft. The system can do kinematic and dynamic analysis, real-time control by visual prototyping and digital models through real-time data acquisition and co-simulation.

The Design of the Anti-Rolling Tank Control System Based on CAN-Bus

2013 ◽  
Vol 373-375 ◽  
pp. 1466-1471
Author(s):  
Xin Xin Chen ◽  
Kai Jiang ◽  
Ya Wei Tang
Keyword(s):  
Real Time ◽  
High Performance ◽  
Control Algorithm ◽  
Can Bus ◽  
High Strength ◽  
Real Time Control ◽  
Time Data ◽  
Time Control ◽  
Embedded Controller ◽  
Complex Algorithm

As the anti-rolling tank controller based on PLC is unable to fulfill the high strength of calculation of the automatic real-time control algorithm, which leads to the limitation of anti-rolling effect, this paper proposes a distributed embedded controller based on CAN bus communication. The controller uses a high-performance ARM chip as the main chip to meet the complex algorithm calculation requirements. For CAN bus communication between the distributed modules, the system is simple and reliable. Distributed embedded controller consists of the center controller, the IO controller and the communication adapter whose hardware design and software design are proposed in this paper, and achieves the acquisition of real-time data of ships status information and intelligent control algorithm. Through simulation and bench simulation experiments, the controller can achieves the excellent anti-rolling effect. The distributed controller architecture is simple and easy to expand and spread to various tonnages of real ships.

Development of a Novel Electro-Hydraulic Laboratory

2006 ◽  
Author(s):  
David G. Fenstermacher ◽  
K. Krishnamurthy ◽  
Robert G. Landers ◽  
Jigar D. Patel
Keyword(s):  
Real Time ◽  
Hydraulic Systems ◽  
Real Time Control ◽  
Time Data ◽  
University Of Missouri ◽  
Time Control ◽  
Industrial Grade ◽  
Xpc Target ◽  
Hydraulics Laboratory ◽  
And Control

This paper describes an Electro-Hydraulics Laboratory (EH Lab) at the University of Missouri - Rolla (UMR), which was recently established with a gift from Caterpillar Inc. The goal of this laboratory is to provide students the opportunity for hands-on experience with signal processing, dynamic modeling, and real-time control of industrial-grade electro-hydraulic systems. Unlike most comparable educational laboratories, nearly all of the components used in this laboratory were originally intended for industrial use, yielding a much more real-world experience for students. The laboratory utilizes the xPC Target software for rapid prototyping and execution of real-time data acquisition and control systems using Simulink. Several laboratories, as well as a course project, that utilize the EH Lab are presented.

scholarly journals REAL-TIME CONTROL OF OPERATIONAL AND TECHNICAL PERFORMANCES OF THE AIRCRAFT GROUP

2020 ◽  
pp. 12-22
Author(s):  
Yu. I. Buryak ◽  
M. P. Lyubovnikov ◽  
K. A. Kolesnikov
Keyword(s):  
Real Time ◽  
Technical Condition ◽  
Automatic Identification ◽  
Real Time Control ◽  
Software Applications ◽  
Time Control ◽  
Methodical Approach ◽  
Maintenance Work ◽  
Technical Operation ◽  
Technical Solutions

The article deals with the issues of improving the efficiency of control of operational and technical characteristics of the aircraft group by ensuring the completeness, reliability and relevance of data collection on the results of their operation. Proposals have been formed to combine aircraft maintenance work and collect the necessary data in a single automated real-time process. New approaches to automation of information processes of aircraft technical operation on the basis of wide use of mobile computer devices, document flow in electronic form and means of automatic identification United by the corresponding software components are offered. Mathematical models, algorithms and supporting software have been developed. The methodical approach for the automated creation of software applications using the tools of the software and technology platform is considered. A software and hardware complex for collecting and monitoring real-time parameters of the technical condition and operational and technical characteristics of the aircraft group was developed, the main functions of its components and the scheme of interaction were determined. It is shown that the proposed methodological and software-technical solutions allow to provide an increase in the reliability and efficiency of the assessment of operational and technical characteristics of aircraft using both single and integrated (complex) indicators.

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