AN INTEGRATED NETWORK INFORMATION AND SCADA SYSTEM FOR THE CONTROL OF PUBLIC DISTRIBUTION NETWORKS

1990 ◽  
pp. 449-454
Author(s):  
J. Partanen ◽  
P. Juuti ◽  
E. Lakervi ◽  
J.H. Etula
Keyword(s):  
Distribution Networks ◽  
Integrated Network ◽  
Network Information ◽  
Scada System

scholarly journals “Triple-Alls” Distribution Network Information Model and Platform Design

2020 ◽  
Vol 186 ◽  
pp. 02001
Author(s):  
Jianfeng Wang ◽  
Liang Chen ◽  
Liqin Shi ◽  
Dao’an Zhang ◽  
Hao Liu
Keyword(s):  
Power Distribution ◽  
Large Scale ◽  
Distribution Network ◽  
Distribution Networks ◽  
Information Model ◽  
Power Distribution Network ◽  
Platform Design ◽  
Network Information ◽  
Sensing Technology ◽  
New Energy

In recent years, large-scale new energy sources have been connected to the power distribution network, and the ubiquitous power IoT sensing technology has developed rapidly. At the same time, the increase in energy consumption has placed higher requirements on the consumption of new energy, which has led to the “Triple-Alls” (All access, All sensing, All consumption) requirements of the distribution network. To this end, this paper conducts a series of studies on the “Triple-Alls” distribution network: First, it analyzes the characteristics and key technologies of the “Triple-Alls” distribution network by comparing with traditional distribution networks, and then establishes energy storage, photovoltaic, and wind power. Information model of “Triple-Alls” distribution network. Then, a platform design scheme meeting the requirements is constructed. Finally, the application functions of “All access”, “All sensing” and “All consumption” in the distribution network are explained in detail.

NATIS (National Information Systems): The Jamaican Experience

1996 ◽  
Vol 8 (3) ◽  
pp. 167-180 ◽  
Author(s):  
Ownali Nurdin Mohamedali
Keyword(s):  
Information System ◽  
Information Systems ◽  
Information Policy ◽  
National Council ◽  
National Library ◽  
Integrated Network ◽  
Network Information ◽  
National Archives ◽  
The Government ◽  
National Information

In December 1973 the Prime Minster of Jamaica appointed a National Council on Libraries, Archives and Document Services (NACOLADS) to advise the government on the development of an integrated network information system. It was thought that this could best be done by using UNESCO's NATIS concept. Several working parties were established, and among their recommendations were the creation of a series of networks as the basis of a national information system, the establishment of a National Library (achieved in 1979), new legislation for the National Archives and Records Center (passed in 1982), and copyright legislation, with provision for legal deposit. NACOLADS incorporated all the recommendations into a national information plan, published in 1978. A revised edition in 1986 included recommendations for redressing a number of shortcomings (e.g. the need for improved salaries and conditions of service). In 1990 NACOLADS was renamed NACOLAIS (National Council on Libraries, Archives and Information Systems), and given additional responsibility for the expansion of NATIS in Jamaica. A copyright law was eventually passed in 1993, but laws for a national information policy and legal deposit remain to be enacted. Some believe that the experience of NATIS in Jamaica can be used as a model for the establishment of national information systems in other small Third World countries.

scholarly journals Steady-State Stand-Alone Power Flow Solvers for Integrated Transmission-Distribution Networks: A Comparison Study and Numerical Assessment

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5784
Author(s):  
Maria Eliza Kootte ◽  
Cornelis Vuik
Keyword(s):  
Steady State ◽  
Power Systems ◽  
Power Flow ◽  
Large Scale ◽  
Energy Transition ◽  
Distribution Networks ◽  
Splitting Methods ◽  
Test Cases ◽  
Integrated Network ◽  
Three Phase

This paper compares and assesses several numerical methods that solve the steady-state power flow problem on integrated transmission-distribution networks. The integrated network model consists of a balanced transmission and an unbalanced distribution network. It is important to analyze these integrated electrical power systems due to the changes related to the energy transition. We classified the existing integration methods as unified and splitting methods. These methods can be applied to homogeneous (complete three-phase) and hybrid (single-phase/three-phase) network models, which results in four approaches in total. These approaches were compared on their accuracy and numerical performance—CPU time and number of iterations—to demonstrate their applicability on large-scale electricity networks. Furthermore, their sensitivity towards the amount of distributed generation and the addition of multiple distribution feeders was investigated. The methods were assessed by running power flow simulations using the Newton–Raphson method on several integrated power systems up to 25,000 unknowns. The assessment showed that unified methods applied to hybrid networks performed the best on these test cases. The splitting methods are advantageous when complete network data sharing between system operators is not allowed. The use of high-performance techniques for larger test cases containing multiple distribution networks will make the difference in speed less significant.

scholarly journals A Nearly Zero-Energy Microgrid Testbed Laboratory: Centralized Control Strategy Based on SCADA System

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 2106 ◽  
Author(s):  
Mostafa Kermani ◽  
Domenico Luca Carnì ◽  
Sara Rotondo ◽  
Aurelio Paolillo ◽  
Francesco Manzo ◽  
...  
Keyword(s):  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Energy Management System ◽  
Centralized Control ◽  
Zero Energy ◽  
Scada System ◽  
Scada Systems ◽  
University Of Rome ◽  
Active Distribution Networks

Currently, despite the use of renewable energy sources (RESs), distribution networks are facing problems, such as complexity and low productivity. Emerging microgrids (MGs) with RESs based on supervisory control and data acquisition (SCADA) are an effective solution to control, manage, and finally deal with these challenges. The development and success of MGs is highly dependent on the use of power electronic interfaces. The use of these interfaces is directly related to the progress of SCADA systems and communication infrastructures. The use of SCADA systems for the control and operation of MGs and active distribution networks promotes productivity and efficiency. This paper presents a real MG case study called the LAMBDA MG testbed laboratory, which has been implemented in the electrical department of the Sapienza University of Rome with a centralized energy management system (CEMS). The real-time results of the SCADA system show that a CEMS can create proper energy balance in a LAMBDA MG testbed and, consequently, minimize the exchange power of the LAMBDA MG and main grid.

scholarly journals A Machine Learning Approach for Coordinated Voltage and Reactive Power Control

2020 ◽  
Vol 18 (1) ◽  
pp. 54-60
Author(s):  
Worawat Nakawiro
Keyword(s):  
Machine Learning ◽  
Power Control ◽  
Reactive Power ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Classification Problem ◽  
Reactive Power Control ◽  
Network Information ◽  
Distributed Generators ◽  
Multi Class Classification

Increasing penetration of renewable energy sources in form of distributed generators has brought many technical challenges to distribution networks. Among those, voltage and reactive power control should be revised and improved. Existing and new control resources should be coordinated based on real-time information and in closed loop. To achieve this, machine learning (ML) can be used to map the relationship between the selected network information and the desired control output. In this paper, setting of the shunt compensator operating in capacitive or inductive modes is coordinated with the tap position of substation transformer by the developed ML. Dataset emulating network behaviour during a year operation is constructed for training ML. A multi-class classification problem is formulated. Simulation results show satisfactory accuracy for some classes.

scholarly journals Autonomic Computing Architecture for SCADA Cyber Security

2020 ◽  
pp. 543-557
Author(s):  
Sajid Nazir ◽  
Shushma Patel ◽  
Dilip Patel
Keyword(s):  
Cyber Security ◽  
Autonomic Computing ◽  
Distribution Networks ◽  
High Availability ◽  
Computing Systems ◽  
Intelligent Computing ◽  
Autonomous Operation ◽  
Computing Paradigm ◽  
Scada System ◽  
Scada Systems

Autonomic computing paradigm is based on intelligent computing systems that can autonomously take actions under given conditions. These technologies have been successfully applied to many problem domains requiring autonomous operation. One such area of national interest is SCADA systems that monitor critical infrastructures such as transportation networks, large manufacturing, business and health facilities, power generation, and distribution networks. The SCADA systems have evolved into a complex, highly connected system requiring high availability. On the other hand, cyber threats to these infrastructures have increasingly become more sophisticated, extensive and numerous. This highlights the need for newer measures that can proactively and autonomously react to an impending threat. This article proposes a SCADA system framework to leverage autonomic computing elements in the architecture for coping with the current challenges and threats of cyber security.

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