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.

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.

A Real Time Control Architecture for Continuously Managing Patients in a Care Unit

1995 ◽  
Vol 34 (05) ◽  
pp. 475-488
Author(s):  
B. Seroussi ◽  
J. F. Boisvieux ◽  
V. Morice
Keyword(s):  
Real Time ◽  
Linear Time ◽  
Treatment Plan ◽  
Control Architecture ◽  
Real Time Control ◽  
Time Representation ◽  
Time Control ◽  
Continuous Support ◽  
Definition Of ◽  
Computerized System

Abstract:The monitoring and treatment of patients in a care unit is a complex task in which even the most experienced clinicians can make errors. A hemato-oncology department in which patients undergo chemotherapy asked for a computerized system able to provide intelligent and continuous support in this task. One issue in building such a system is the definition of a control architecture able to manage, in real time, a treatment plan containing prescriptions and protocols in which temporal constraints are expressed in various ways, that is, which supervises the treatment, including controlling the timely execution of prescriptions and suggesting modifications to the plan according to the patient’s evolving condition. The system to solve these issues, called SEPIA, has to manage the dynamic, processes involved in patient care. Its role is to generate, in real time, commands for the patient’s care (execution of tests, administration of drugs) from a plan, and to monitor the patient’s state so that it may propose actions updating the plan. The necessity of an explicit time representation is shown. We propose using a linear time structure towards the past, with precise and absolute dates, open towards the future, and with imprecise and relative dates. Temporal relative scales are introduced to facilitate knowledge representation and access.

Real-time Control for Mobile Robot Considering Environmental Changes

2007 ◽  
Vol 73 (12) ◽  
pp. 1369-1374
Author(s):  
Hiromi SATO ◽  
Yuichiro MORIKUNI ◽  
Kiyotaka KATO
Keyword(s):  
Mobile Robot ◽  
Real Time ◽  
Environmental Changes ◽  
Real Time Control ◽  
Time Control
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