Transformers are the basic and valuable equipment of electricity network. Transformers correct function has important role in reliability of network .distribution transformers are designed for work at nominal frequency and full sinus current. Application of nonlinear loads in recent decades, such as power electronic loads, caused higher levels of harmonic. This kind of load can lead to creating...

Recently electronic tap-changer has received more attention due to its quick response, better performance and simpler maintenance compared to the mechanical tap-changer. This paper presents the capability of the distribution transformer equipped with an electronic tap-changer for improving power quality. At this end, the analytical computation for determining the compensating limit of electroni...

Concurrent state transformers are an extension of state transformers investigated by Launchbury, Peyton Jones, Wadler, and others by concurrency primitives. A denotational semantics for state transformers executing in parallel is deened using standard domain theoretic techniques. Using the semantics it is proved that concurrent state transformers still form a monad and that the concurrent seman...

Introduction This application guide addresses the limiting conditions of connecting transformers in parallel and loading considerations when turn ratios, impedances, and kVA ratings are different. Most transformers installed in parallel have the same kVA, turn ratios, and impedances, which can make it difficult for power engineers in industrial and commercial facilities to understand circulatin...

This paper is concerned with development of a technique for performance prediction of current transformers (CT), accurately. In this technique, a new optimized model from view-point of both computation time and memory is introduced in order to simulate the current transformers on digital computers. The introduced software in this paper in combination with relay tester equipments can be used ins...

estimating the final price of products is of great importance. for manufacturing companies proposing a final price is only possible after the design process over. these companies propose an approximate initial price of the required products to the customers for which some of time and money is required. here using the existing data of already designed transformers and utilizing the bayesian anal...

Dr. Greg Hinson is in the minority. He's among the meager 13 percent of physicians in solo practice who use electronic medical records, according to a recent Commonwealth Fund survey. But Hinson is comfortable being apart from the madding crowd. He knew electronic record keeping would be the ticket to efficiencies in his practice so he traded in his hodgepodge of inadequate record-keeping techn...

We study relations between predicate transformers and mul-tifunctions in a topological setting based on closure operators. We give topological deenitions of safety and liveness predicates and using these predicates we deene predicate transformers. State transformers are mul-tifunctions with values in the collection of xed points of a closure operator. We derive several isomorphisms between pred...

task assignment problem (tap) involves assigning a number of tasks to a number of processors in distributed computing systems and its objective is to minimize the sum of the total execution and communication costs, subject to all of the resource constraints. tap is a combinatorial optimization problem and np-complete. this paper proposes a hybrid meta-heuristic algorithm for solving tap in a h...

We demonstrate an RF photonic fractional Hilbert transformer based on integrated Kerr micro-comb source featuring a record low free spectral range of 48.9 GHz, yielding 75 microcomb lines across the C-band. By programming and shaping comb according to calculated tap weights, we that can achieve tunable bandwidths ranging from 1.2 15.3 switchable centre frequencies baseband 9.5 arbitrary orders....