Synthesis of a Controllable Circuit Breaker Mechanism

1990 ◽  
Vol 112 (3) ◽  
pp. 324-330 ◽  
Author(s):  
C. C. Jobes ◽  
G. M. Palmer ◽  
K. H. Means
Keyword(s):  
Circuit Breaker ◽  
Inequality Constraints ◽  
Problem Definition ◽  
Load Management ◽  
Functional Requirements ◽  
Dimensional Synthesis ◽  
Management Scheme ◽  
Optimization Simulation ◽  
Equality And Inequality Constraints ◽  
First Time

This paper addresses, for the first time, the synthesis, optimization, simulation and analysis of a controllable circuit breaker mechanism. Type synthesis is performed by finding the mechanisms conforming to topological requirements set forth in the problem definition and evaluating them to determine whether they satisfy the stated functional requirements. Dimensional synthesis is performed upon these mechanisms by designating the equality and inequality constraints, assigning the variable types, and then searching the specified design space to determine if any solutions exist. An optimization is performed on any mechanisms found to determine which of the mechanism configurations is optimal with respect to the specified criteria of desirability. Simulation and analysis is then performed on the optimal mechanism to verify that it meets all specified requirements and constraints. The result of this design is a controllable residential circuit breaker than can be used in a residential load management scheme.

Investigation of Direct Load Management Scheme While Considering End Users Comfort

2009 ◽  
Vol 129 (2) ◽  
pp. 283-290 ◽  
Author(s):  
Junji Kondoh ◽  
Ahmed Shafiu ◽  
Nick Jenkins ◽  
Danny Pudjianto ◽  
Goran Strbac
Keyword(s):  
End Users ◽  
Load Management ◽  
Management Scheme

scholarly journals Distributed load management scheme to increase PV hosting capacity in LV feeders

2019 ◽  
Vol 14 (1) ◽  
pp. 125-133 ◽  
Author(s):  
Reza Mahroo‐Bakhtiari ◽  
Milad Izadi ◽  
Amir Safdarian ◽  
Matti Lehtonen
Keyword(s):  
Load Management ◽  
Distributed Load ◽  
Management Scheme

scholarly journals General Integrated Representations оf Technogenic Accidents Danger Indicators

10.12737/2161 ◽  
2013 ◽  
Vol 2 (6) ◽  
pp. 38-45
Author(s):  
Киреев ◽  
V. Kireev ◽  
Гуменюк ◽  
V. Gumenyuk ◽  
Карнюшкин ◽  
...  
Keyword(s):  
Integral Solution ◽  
Problem Definition ◽  
Acceptable Level ◽  
Hazard Indices ◽  
General Integral ◽  
Industrial Disaster ◽  
First Time ◽  
Reduced Time ◽  
Temporal Indices

The questions of justification of total and integral spatial-temporal hazard indices related to industrial disasters are considered from the perspective of qualimetry. The problem definition about casual time of destruction effects occurrence on all square of disaster striking action is formulated. General integral solution of formulated task is given. It is shown, that general integral expressions related to total and integral spatial-temporal hazard indices of industrial disaster follow from this solution. Particular cases of disaster’s spatial-temporal indices are considered. For the first time the disaster’s integral temporal indices such as reduced time of injury effect occurrence and reduced time of retention of injury effect are proved. Practically relevant tasks, which have to be solved with the use of proved hazard indices of industrial disasters, are formulated so that the hazard can be reduced to the allowed (psychologically acceptable) level.

scholarly journals Relations between Abs-Normal NLPs and MPCCs. Part 2: Weak Constraint Qualifications

2021 ◽  
Vol Volume 2 (Original research articles>) ◽  
Author(s):  
Lisa C. Hegerhorst-Schultchen ◽  
Christian Kirches ◽  
Marc C. Steinbach
Keyword(s):  
Normal Form ◽  
Optimization Problems ◽  
Constraint Qualifications ◽  
Inequality Constraints ◽  
First Order ◽  
Nonlinear Programs ◽  
Mathematical Programs ◽  
Ongoing Effort ◽  
Equality And Inequality Constraints ◽  
Smooth Optimization

This work continues an ongoing effort to compare non-smooth optimization problems in abs-normal form to Mathematical Programs with Complementarity Constraints (MPCCs). We study general Nonlinear Programs with equality and inequality constraints in abs-normal form, so-called Abs-Normal NLPs, and their relation to equivalent MPCC reformulations. We introduce the concepts of Abadie's and Guignard's kink qualification and prove relations to MPCC-ACQ and MPCC-GCQ for the counterpart MPCC formulations. Due to non-uniqueness of a specific slack reformulation suggested in [10], the relations are non-trivial. It turns out that constraint qualifications of Abadie type are preserved. We also prove the weaker result that equivalence of Guginard's (and Abadie's) constraint qualifications for all branch problems hold, while the question of GCQ preservation remains open. Finally, we introduce M-stationarity and B-stationarity concepts for abs-normal NLPs and prove first order optimality conditions corresponding to MPCC counterpart formulations.

A Comparative Study of Improved Teaching Learning Based Optimization Technique on Economic Load Dispatch Problem with Generator Constraints

2016 ◽  
Vol 5 (4) ◽  
pp. 1-25 ◽  
Author(s):  
Sumit Banerjee ◽  
Chandan Chanda ◽  
Deblina Maity
Keyword(s):  
Optimization Technique ◽  
Inequality Constraints ◽  
Test System ◽  
Economic Load Dispatch ◽  
Thermal Plant ◽  
Equality And Inequality Constraints ◽  
Teaching Learning Based Optimization ◽  
Teaching Learning ◽  
Operational Constraints ◽  
Rate Limit

This article presents a novel improved teaching learning based optimization (I-TLBO) technique to solve economic load dispatch (ELD) problem of the thermal plant without considering transmission losses. The proposed methodology can take care of ELD problems considering practical nonlinearities such as ramp rate limit, prohibited operating zone and valve point loading. The objective of economic load dispatch is to determine the optimal power generation of the units to meet the load demand, such that the overall cost of generation is minimized, while satisfying different operational constraints. I-TLBO is a recently developed evolutionary algorithm based on two basic concepts of education namely teaching phase and learning phase. The effectiveness of the proposed algorithm has been verified on test system with equality and inequality constraints. Compared with the other existing techniques demonstrates the superiority of the proposed algorithm.

A Study of Airline Fuel Planning Optimization Using R-Ga

2020 ◽  
Vol 46 ◽  
pp. 189-197
Author(s):  
Ekene Gabriel Okafor ◽  
Osaretin Kole Uhuegho ◽  
Christopher Manshop ◽  
Paul Olugbeji Jemitola ◽  
Osichinaka Chiedu Ubadike
Keyword(s):  
Regression Analysis ◽  
Fuel Consumption ◽  
Large Time ◽  
Inequality Constraints ◽  
Flight Time ◽  
Planning Problem ◽  
Study Objective ◽  
Planning Optimization ◽  
Equality And Inequality Constraints ◽  
Human Effort

In this study, airline planning optimization problem based on ferry strategy was considered. Cost was the study objective function subject to forty equality and inequality constraints. Regression analysis as well a genetic algorithm (GA) was used to solve the problem. The mathematical relationship between flight fuel consumption and flight time was established using regression analysis, while GA was used for the optimization. The established mathematical model was used to predict the fuel consumption for the twenty scheduled flight consider based on their respective flight time. The result was found to be satisfactory, as optimal fuel lift plan was achieved in approximately twenty seconds of program run time, as against the large time usually spend using human effort to solve the fuel planning problem. The optimized fuel lift plan was compared with the actual fuel lift plan executed by the airline for the twenty scheduled flight considered. The result revealed thirty percent savings using the optimized plan in comparison to the actual fuel lift plan executed by the airline.

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