List of Articles اسکادا

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  1 - determine the effectiveness of using the SCADA systems in Water and sewage in crisis management
  Majid Kalantari Afsaneh Zamani Moghadam
  Introduction and research objectives: Crisis management has many aspects, which include the need to use the new advances and technologies for collection of correct information and for appropriate and timely response to crisis creating processes. Industrial automation is More

  Introduction and research objectives: Crisis management has many aspects, which include the need to use the new advances and technologies for collection of correct information and for appropriate and timely response to crisis creating processes. Industrial automation is the means of realizing this goal and the most comprehensive forms of these systems, which have been designed with a holistic approach to management of systems in operation during crisis and emergencies are the SCADA systems. This article has been written with the objective of reviewing the effectiveness level of SCADA systems in the crisis management of urban water and wastewater companies (case study of Alborz Provincial Water and Wastewater Company), to be able to analyze their role and impact on crisis management by monitoring the condition of installations in operation circuit equipped with SCADA as compared to those devoid of such systems. Methodology: The methodology in this research is descriptive and post event approach. The reason for this view is that given the financial weaknesses of the urban water and wastewater companies, the high costs of installing the SCADA system and the lack of proper planning (for setting up or completing the ongoing SCADA projects Findings: The results of this study demonstrate the effectiveness of SCADA system on pre and during crisis management as well as the comprehensive crisis management of the Alborz Water and Wastewater Company, while it has no impact on the post crisis management of the Company. Conclusion: Based on the research findings and the data analysis conducted, among the three stages of pre, during and post crisis management, the SCADA system leaves its greatest impact before and during the crisis. As prevention is always better than cure and since in this project in parallel to confirming the effectiveness of SCADA system in managing the crisis during its occurrence has been demonstrated, the use of such control systems appears to be an undeniable necessity, which ought to be included in the agenda of every water and wastewater company in the country.   Manuscript profile
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  2 - Definition of Bus Priority Vector to Solve Distribution Load Flow for Radial Networks using MATLAB
  Peyman Nazarian
  Introduction:  Load distribution analysis is a fundamental and basic study for all power networks, including distribution networks, which are used in steady-state conditions. Power system planning and operation, power network reorganization, and many optimization s More

  Introduction:  Load distribution analysis is a fundamental and basic study for all power networks, including distribution networks, which are used in steady-state conditions. Power system planning and operation, power network reorganization, and many optimization studies require a large number of load distribution calculations in normal and emergency situations. Due to the nonlinearity of the system of load distribution equations, it is necessary to use iterative solution methods to solve it. In addition, due to a large number of power grid buses, matrix algebra is used. Some of these applications require fast iterative solutions of load distribution and therefore it is very important that load distribution analysis is performed efficiently. A number of load distribution algorithms are specifically designed for distribution systems. One of these methods considers bus voltages as state variables and works based on an iterative algorithm and uses special methods to increase convergence.Method: The proposed algorithm of this paper called SDLF in this article does not need special matrices and complex programming. In this method, load distribution can be achieved easily with only a simple vector that shows the priority of buses, which we call BPV, and by using the forward-backward sweeper algorithm. It is worth mentioning that the BPV vector itself is extracted from the network topology. This work can be done both visually from the electrical diagram of the network and from the data matrix of network D by MATLAB software. Finding: In terms of the convergence of the solution, increasing the repetition has led to an increase in accuracy, and as a result, the 10th repetition has been chosen as a relatively accurate result to confirm the validity of the method, considering the required engineering precision. The obtained results show that even in the first iteration, an acceptable accuracy for the voltage range has been obtained. In steady state analysis of power networks, the voltage amplitude is more important than the voltage phase. The noteworthy point is that in calculating the voltage phase, it is not necessary to update its value in each step, and it is enough to calculate the voltage phase after obtaining the voltage ranges. Conclusion: In this article, a new method called SDLF is introduced to study the load distribution of distribution networks. The results of the implementation of the proposed method, with an acceptable engineering error, can be used in the common applications of power networks in the first iteration, and based on this, it can be used as an online load distribution in SCADA systems. The effectiveness of the method was checked on the test network of 33 IEEE buses in the text of the article and its validity was confirmed. The introduction of the BPV bus priority vector made it possible to avoid using complex matrices and additional calculations and to reduce the time of load distribution calculations. Manuscript profile