scholarly journals Optimization Method for Multiple Measures to Mitigate Line Overloads in Power Systems

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6201
Author(s):  
Jinghan He ◽  
Ninghui Han ◽  
Ziqi Wang
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Optimization Method ◽  
Control Measures ◽  
Modeling Process ◽  
Multi Stage ◽  
Power Flow Tracing ◽  
Line Overload ◽  
Protection And Control ◽  
And Control

Line overload is one of the important causal factors of cascading failures and blackouts in power systems. An optimization method for protection and control measures to mitigate line overloads is proposed in this study. The method consists of two main parts, i.e., the modeling process and the solving process. In the modeling process, an optimization model including overload protection and emergency control measures is developed using PFT (Power Flow Tracing). In the solving process, a multi-stage optimization method using IBSO (Improved Brain Storm Optimization algorithm) is proposed to obtain the final result. The aim of this study is to form a coordinated protection and control strategy that reduces the power on the overloaded line within the safety limits and minimizes the load loss of the power system. The simulation results show the effectiveness of the proposed method.

scholarly journals Optimal power flow: an introduction to predictive, distributed and stochastic control challenges

2018 ◽  
Vol 66 (7) ◽  
pp. 573-589 ◽  
Author(s):  
Timm Faulwasser ◽  
Alexander Engelmann ◽  
Tillmann Mühlpfordt ◽  
Veit Hagenmeyer
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Flow Problems ◽  
Optimal Power ◽  
Open Questions ◽  
Multi Stage ◽  
Systems And Control ◽  
Control Community ◽  
And Control

Abstract The Energiewende is a paradigm change that can be witnessed at latest since the political decision to step out of nuclear energy. Moreover, despite common roots in Electrical Engineering, the control community and the power systems community face a lack of common vocabulary. In this context, this paper aims at providing a systems-and-control specific introduction to optimal power flow problems which are pivotal in the operation of energy systems. Based on a concise problem statement, we introduce a common description of optimal power flow variants including multi-stage problems and predictive control, stochastic uncertainties, and issues of distributed optimization. Moreover, we sketch open questions that might be of interest for the systems and control community.

A realistic cost allocation methodology based on power flow tracing in deregulated power systems

2021 ◽  
Vol 12 (3) ◽  
pp. 1
Author(s):  
C.V. Suresh ◽  
V. Ganesh ◽  
B. Venkata Prasanth ◽  
Luke John Baktha Singh Immaraju
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Cost Allocation ◽  
Power Flow Tracing ◽  
Deregulated Power Systems

ADEQUACY-BASED POWER SYSTEM RELIABILITY STUDIES IN THE DEREGULATED ENVIRONMENT

2008 ◽  
Vol 15 (02) ◽  
pp. 129-141 ◽  
Author(s):  
A. K. VERMA ◽  
V. VIJAY VENU
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Research Work ◽  
Power Sector ◽  
Reliability Models ◽  
Reliability Management ◽  
Electric Power Sector ◽  
Power Flow Tracing ◽  
Selection Methodology ◽  
The Way

The onset of deregulation in the electric power sector in the recent years has brought to the fore several pronounced issues related to reliability management, necessitating a revamping of the metrics. The element of markets and economic trading introduced in the operations of power systems has seen a paradigm shift even in the way customer-say is incorporated into the reliability apportioning. In order to better appreciate the sea-changes brought forward by deregulation, identification of areas of evolving reliability research in the regulated regime goes a long way in dealing with their deregulated counterparts. This paper caters to the view to provide a pointer to the significant issues that can profoundly impact the reliability studies in the liberalized environment. Emphasis in this paper is placed on a bilateral market structure, where all participants of competitive trading have mutually agreed upon pre-defined contracts to trade energy. With a view to improvise upon the existing nascent reliability network equivalent techniques, a realistic state space selection methodology, crucial to the contingency effects' evaluation is proposed, which makes a novel use of power flow tracing procedures. This research work is intended to pave the way for robust reliability models that take into account all the structural and consequent operational transmutations in power systems, yielding a concrete possibility of implementing non-uniform reliability as per the user requirements — a situation that was not feasible in the earlier regime.

Development and Field Experience of Digital Protection and Control Equipment in Power Systems

1982 ◽  
Vol PER-2 (11) ◽  
pp. 23-24
Author(s):  
Tokio Sugiyama ◽  
Sigeaki Kameoka ◽  
Kouji Maeda ◽  
Akira Kaneda ◽  
Tadahiro Goda
Keyword(s):  
Power Systems ◽  
Field Experience ◽  
Control Equipment ◽  
Digital Protection ◽  
Protection And Control ◽  
And Control

scholarly journals The Effective Way to Prevent Occupational Hazards on Tuberculosis Treatment

2020 ◽  
pp. 1-9
Author(s):  
Franklyn Chukwudi N. Mbaneme ◽  
Emmanuel C. Obiano ◽  
Ebelechukwudi Obianuju Mbaneme
Keyword(s):  
Health Care ◽  
Sampling Procedure ◽  
Control Measures ◽  
Occupational Hazards ◽  
Health Care Planning ◽  
Anambra State ◽  
Prevention Services ◽  
Tb Treatment ◽  
Multi Stage ◽  
And Control

Aim: The study aimed to monitor the effective ways to prevent the occupational hazards on tuberculosis (TB) treatment. Methods: Multi-stage sampling procedure was used for this study. Results: The findings of this study revealed that knowledge of occupational hazards of treatment and management of TB is not a new idea in Anambra state, however, majority of the respondents have low level knowledge of occupational hazards protection and prevention services available, particularly when it requires an improvement on the existing means of services. Conclusion: Preventive and control measures to reduce the risk of TB infection and protection of health care workers should be given highest priority in health care planning and development.

scholarly journals Conformance Testing and Analysis of Synchrophasor Communication Message Structures and Formats for Wide Area Measurement Systems in Smart Grids

2017 ◽  
Vol 6 (2) ◽  
pp. 106
Author(s):  
Adeyemi Charles Adewole ◽  
Raynitchka Tzoneva
Keyword(s):  
Power Systems ◽  
Power System ◽  
Communication Networks ◽  
Smart Grids ◽  
Data Communication ◽  
System Stability ◽  
Area Measurement ◽  
Wide Area ◽  
Protection And Control ◽  
And Control

The renewed quest for situational awareness in power systems has brought about the use of digital signal processing of power system measurements, and the transmission of such data to control centres via communication networks. At the control centres, power system stability algorithms are executed to provide monitoring, protection, and control in order to prevent blackouts. This can be achieved by upgrading the existing Supervisory Control and Data Acquisition (SCADA) systems through the deployment of newly proposed power system synchrophasor-based applications for Wide Area Monitoring, Protection, and Control (WAMPAC). However, this can only be done when there is a complete understanding of the methods and technologies associated with the communication network, message structure, and formats required. This paper presents an analysis of the IEEE C37.118 synchrophasor message framework, message formats, and data communication of synchrophasor measurements from Phasor Measurement Units (PMUs) for WAMPAC schemes in smart grids. A newly designed lab-scale testbed is implemented and used in the practical experimentation relating to this paper. Synchrophasor measurements from the PMUs are captured using a network protocol analyzer software-Wireshark, and the compliance of the synchrophasor message structures and formats captured was compared to the specifications defined in the IEEE C37.118 synchrophasor standard.

scholarly journals Knowledge and awareness about airborne pathogens and its prevention among the general public

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 279-286
Author(s):  
Ashritha M ◽  
Geetha R V ◽  
Jayalakshmi Somasundaram
Keyword(s):  
General Public ◽  
Health Workers ◽  
Control Measures ◽  
Dust Particles ◽  
Protective Measures ◽  
The People ◽  
Airborne Disease ◽  
Protection And Control ◽  
And Control ◽  
Respiratory Droplets

The airborne disease is mainly caused by the pathogens, which spread through respiratory droplets while coughing, sneezing or talking. Infection protection and control measures are taken to prevent the possible spread of , which also spreads through respiratory droplets. Discharged microbes are suspended in the air as dust particles and even in the form of droplets. The Middle East respiratory syndrome is caused by wherein the health workers are at a higher risk. Hence, awareness must be created in order to reduce a number of cases. The preventive measures are mainly taken in health care as patients are susceptible to diseases. It is essential for all the people to become aware and take steps according. The survey was distributed online to around 100 participants of various places of Tamil regarding the awareness of airborne pathogens. From this above study, it could be noticed that around 85% of the people are aware of the airborne pathogen whereas 15% of the people are not aware of. 64% of people have a good knowledge of the symptoms of any type of airborne disease. the protective measures that must be taken, about 65% of the people are conscious of doing it. The study concludes that there is awareness of airborne pathogens and its prevention among the general public.

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