Look at the upload file the article title is Smarter Grids are More Essay

Look at the upload file the article title is Smarter Grids are More Efficient - Essay Example Modelling of real time information and online system that provides optimized and coordinated control for unbalanced disribution networks occurs. Indeed, electricity distribution companies save energy by maximising energy delivery effieciencies. WO optimizes resources that are highly reactive and voltage control capabilities. There is consumption of thousands of billions of kilowatt-hours as evident in 3.1% yearly increase between 1980-2006. 10% of electric energy from power plants is lost in show and allotment processes. 40% of losses occur on developed distribution networks evident in 2006 when there was a 655 billion kWh energy loss in distribution. Peak demand in a system lasts less than 5% of the time, therefore this potential can be utilized during peak load hours. Electricity distribution network moves energy from substations to consumers because the network includes; medium voltage power, substation transformers and pole-pad mounted transformers. Most energy loss which occur on distribution is ohmic loss resulting from currents of electricity which flow through condutors. Reactive power compensation devices are designed to reduce unproductive components of current. Voltage regulating devices are usually installed at the substation and on feeders with the intent of adjusting the feed voltage. However, fixing of transformers that consist of tap changers named voltage regulator often occurs. Loss occurs due to resistance in conductors, which is determined by resistability of material used to make cross-sectional areas. In saving electric energy, regulation is achieved in accordance to measurementswhich are locally available. There ought to be control strategies that are comprehensively evaluated to establish feeders that could be regulated with multiple voltages. More percentages of electricity are saved when var compensation devises are used. In addition, the use of substation automation system or management systems that deal with

Lean Six Sigma Essay Example | Topics and Well Written Essays - 2250 words

Lean Six Sigma - Essay Example Although Lean manufacturing and Six Sigma have been practiced for several decades now, Lean Six Sigma itself is a relatively new initiative being followed by companies worldwide. Whereas Six Sigma is focused on reducing variation and improving process yield using statistical tools, Lean is primarily concerned with eliminating waste by following a defined approach to implement various Lean principles. Lean brings action and intuition to the table; Six Sigma uses statistical tools to uncover root causes and provide metrics; Lean Six Sigma is a combination of both and provides the tools to create ongoing business improvement (Smith, 2003). The synergy of Lean and Six Sigma bring in the advantages of both, achieving results consistently superior than what either system could achieve alone. Lean Six Sigma is different from Six Sigma in the sense that it marries the principles of both Lean manufacturing and Six Sigma concepts to produce a much enhanced system. Six Sigma is a process for eliminating defects and variation through the development of a disciplined data driven approach. However Six Sigma alone cannot dramatically improve process speed or reduce invested capital. Although it can bring a process under statistical control, variations will still exist in terms of delivery times, assembly times, routings, etc. Incorporating Lean principles within the Six Sigma framework enhances speed and quality by improving and streamlining the processes and creating excellent customer service. According to Badurdeen (2008), "to get to Lean Six Sigma an organization should first incorporate Six Sigma into their process improvement and then engage in Lean Six Sigma to speed up the processes after the systems have been broken down into smaller components". Selecting the Right Team As such, rightsizing Lean Six Sigma teams should be the first priority for businesses that want to ensure the success of 'Lean' projects and realize the full potential of such projects. Some of the factors that characterize an efficient Lean Six Sigma Team are: High level of efficient communications amongst implementers, management officials and other entities associated with the 'Lean' project. The team members are accountable since decisions and actions taken by the team can be traced back to individual members. Team works with a reduced cost of operations because the lesser the numbers, the less will be the amount of resources used for performing the same tasks and duties The team constantly strives in increasing efficiency in solving complex problems and issues and employees know the exact person to contact if they encounter problems during the implementation phase The team shows less chance of conflicts and ego issues. One way we evaluate the success of a Lean Six Sigma initiative or strategy is to measure the involvement in LeanSix Sigma by way of numbers of people involved, i.e., numbers trained, practicing, certified, etc. DMAIC DMAIC is a standard improvement model; it is a structured, disciplined and rigorous approach to process improvement consisting of 5 logically interlinked phases. The 5 phases are discussed in the following section (George, 2002). Define: This is the first step which aims at clarifying the goals and value of a project. A set of tools such

Video games and violnce Essay Example | Topics and Well Written Essays - 500 words

Video games and violnce - Essay Example ing intensities of aggressiveness; the ‘Tetrisc’ that was non-aggressive, the ‘Shareware’ that was moderate and the ‘Sega Mega’ that was highly aggressive (Scott 123). The study then measured the aggressiveness before and after exposure. The author hypothesized that participants should present a linear increase in aggressiveness after exposure. However, from his study, he notes that there exists no straightforward correlation of the variable and claims that video games may lack influential effects as most scholars account. Indeed, the author observes that we should not generalize the negative effect of such exposures. He also notes that a critical factor to account for when accessing the influence of these games is individual differences (Scott 131). The author uses rational methods in developing an informative and a persuasive piece. Initially, the author’s thesis states that the video games exposure and aggressiveness should have a linear correlation. The author manages to examine his thesis effectively by measuring the group’s aggressiveness under varying backgrounds. Changes in the group aggressiveness would signify the effect of exposure on individuals (Ferguson 380). It is common knowledge that an increase in figures would support the author’s thesis. Tactically, when the figures fail to support study’s thesis, the author keenly notes that the games exposure lacks an obvious effect on observed violence. The study’s ground is acceptable since the study utilizes practical measures in examining the subject. Apparently, if video games effects on violence, then we expect to realize a significance difference on the group’s aggressiveness after exposure. The study employs reliable and persuasive evidence to prove its position. This is evident in the research’s idea of setting the group against games with varying aggressive intensities. As such, we expect to observe maximum aggressiveness when the group is exposed to highly violent video