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From Wikipedia, the free encyclopedia
Power engineering, also called power systems engineering, is a subfield of engineering that deals with the generation, transmission and distribution of electric power as well as the electrical devices connected to such systems including generators, motors and transformers. Although much of the field is concerned with the problems of three-phase AC power - the standard for large-scale power transmission and distribution across the modern world - a significant fraction of the field is concerned with the conversion between AC and DC power as well as the development of specialised power systems such as those used in aircraft or for electric railway networks.
Power Engineering deals with the generation, transmission and distribution of electricity as well as the design of a range of related devices. These include transformers, electric generators, electric motors and power electronics.
The power grid is an electrical network that connects a variety of electric generators to the users of electric power. Users purchase electricity from the grid avoiding the costly exercise of having to generate their own. Power engineers may work on the design and maintenance of the power grid as well as the power systems that connect to it. Such systems are called on-grid power systems and may supply the grid with additional power, draw power from the grid or do both.
Power engineers may also work on systems that do not connect to the grid. These systems are called off-grid power systems and may be used in preference to on-grid systems for a variety of reasons. For example, in remote locations it may be cheaper for a mine to generate its own power rather than pay for connection to the grid and in most mobile applications connection to the grid is simply not practical.
Today, most grids adopt three-phase electric power with alternating current. This choice can be partly attributed to the ease with which this type of power can be generated, transformed and used. Often (especially in the USA), the power is split before it reaches residential customers whose low-power appliances rely upon single-phase electric power. However, many larger industries and organizations still prefer to receive the three-phase power directly because it can be used to drive highly efficient electric motors such as three-phase induction motors.
Transformers play an important role in power transmission because they allow power to be converted to and from higher voltages. This is important because higher voltages suffer less power loss during transmission. This is because higher voltages allow for lower current to deliver the same amount of power, as power is the product of the two. Thus, as the voltage steps up, the current steps down. It is the current flowing through the components that result in both the losses and the subsequent heating. These losses, appearing in the form of heat, are equal to the current squared times the electrical resistance through which the current flows, so as the voltage goes up the losses are dramatically reduced.
For these reasons, electrical substations exist throughout power grids to convert power to higher voltages before transmission and to lower voltages suitable for appliances after transmission.
A steam turbine used to provide electric power.
Power engineering, also called power systems engineering, is a subfield of engineering that deals with the generation, transmission and distribution of electric power as well as the electrical devices connected to such systems including generators, motors and transformers. Although much of the field is concerned with the problems of three-phase AC power - the standard for large-scale power transmission and distribution across the modern world - a significant fraction of the field is concerned with the conversion between AC and DC power as well as the development of specialised power systems such as those used in aircraft or for electric railway networks.
http://www.powereng.com/careers/index.aspx?id=445
Top 10 Reasons to Work at POWER Engineers
1. Excitement! We work on interesting and challenging projects around the world from designing one of the longest transmission line crossings to designing the largest cheese plant in North America. We have implemented an ITS signalization connecting 43 intersections in a busy downtown metropolis and designed innovative power plant upgrades at the world’s largest geothermal production resource field.
2. Distinction! Our team members are great! They are fun, team players and come in all types: cowboys, musicians, race car drivers, cyclists, surfers, mountain climbers, etc. Whatever your talent, you’ll likely fit in.
3. Enjoyment! Our firm is employee-owned with a casual work environment. Some take casual to mean no tie and jacket, and others come to work in their good flip-flops.
4. Knowledge! You will be impressed with the technical competence of peers, mentors, and managers. For example, our T&D Division Manager was one of the first contributors to Byte magazine, an early, influential microcomputer magazine. Most of us find that impressive.
5. Fun! We work to continually improve our employee morale program, which includes company-sponsored annual social events like the Burnout and POWER Outage (which often includes adventurous water activities). And to boost morale and to make sure we stay healthy, we keep our benefits competitive.
6. Meaning! Our team appreciates and encourages quality work. We want our team members to take pride in the company and the work they do. You can even show your pride by wearing your free, employee-designed Outage t-shirt out and about.
7. Reliability! We have a stable company that has diversified services to position ourselves well for the road ahead. Our management team is approachable and makes decisions based on hands-on involvement throughout the company.
8. Recognition! We believe in performance-based merit and advancement; hard work and dedication are valued. We are large enough to provide lots of opportunities for our team members, but small enough that we know each other by name. Plus, if you come in to work on Saturday, there may be left-over snacks from our Friday festivities.
9. Flexibility! Our team uses a flexible management philosophy, providing guidelines and principles and not just policies. Some universal rules and common sense still apply: no running with scissors and no singing loudly to your iPod at your desk, please.
10. Significance! We are highly respected by our clients and a leader in our industries. We work on cool projects and do what is best for our clients.
Culture
Have fun, do good work, make money. As an employee-owned company, we make money so we can invest it in our employees. We strive to make POWER Engineers an appealing place to work, where we perform projects that we find challenging and in which we excel.
We believe that if you enjoy what you are doing, you’ll do good work. If you do good work, then you’ll make money. And if you’re making money, it’s much easier to enjoy what you are doing, so you can do good work…and so the cycle continues.
Our employees work hard. Sometimes that means long hours, but mostly it means using our heads to produce a quality result. We find that we are at our best when we are solving our clients’ challenges, relying on our resourcefulness and perseverance.
POWER Engineers is a unique and fun engineering firm, which may be contradictory to some, but it works well for us.
Benefits
Holidays
POWER Engineers observes ten paid holidays:
Vacation and Personal / Sick Leave
Vacation and personal/sick leave apply to full-time and part-time employees. Hours are accrued according to length of service. Personal/sick leave is also accrued annually.
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