About Electrical Desk
Electrical engineering has many fields of specialization and some of them are: Engineering Management; Industrial Electronics; Instrumentation, Metering and Control Systems; Robotics & Automation; Signal Processing; Power Electronics; A&E Power and Lighting; Maintenance Engineering – responsible for the optimization of equipment for improved maintainability, reliability within departmental budget constraints and equipment availability – and many more field of electrical engineering expertise. Utilization voltages under A&E i.e., the voltages used in power and lighting loads is discussed only briefly, since we assume that an A&E electrical engineer is well exposed on this undertaking and is on this site only because a portion of his project has a high or medium voltage substation facility; and are not involve – full time – in the generation, transmission and power distribution grids.
Our focus, Electrical Power Systems Engineering, deals with power generation and its associated switchyard, transmission and distribution systems from high voltage to medium voltage transmission lines including its related switching schemes (substation configuration), system protection, metering and control systems.
We are not writing a book on this website, to do so would require us to have hundreds of web pages or more since so many excellent books and reference materials have already been written about power system engineering; and to repeat and ask for the authors’ permission for it to be printed here would be a waste of time. Today, many electrical engineering books and reference materials that cost us a fortune in our time can be downloaded – free of charge – from the Internet, a gift, a present, from dedicated selfless professionals and experts in our chosen career who want nothing but to help us be better engineers.
This website gives the electrical engineer just a “little help” or thought. Electrical Desk is merely an information desk or probably just a mere compass tip pointing to what particular task one should focus his full attention on, in order to further his knowledge and skill about a particular electrical engineering specialty. We believed that even experienced electrical engineers can find some useful information from this site.
To make our site helpful for the engineer, we have focused our attention on providing him with salient pointers – just amply enough – to arouse his interest and enthusiasm in a particular field of specialization in power system engineering; because we have always believed that “Enthusiasm Makes the Difference” as Dr. Norman Vincent Peale aptly put it on the cover of his great book.
Transmission Lines and Substations
The author has a long exposure in the design and development of power plants, 230/138/69kV transmission lines and substations including its protective relaying scheme that considers the reliability of service at reasonable cost. The cost estimates, preparation of bid documents and conceptual drawings up to erection and commissioning of the proposed facilities also fall under his duties and responsibilities.
Power Development and Feasibility Studies
In the past, the author together with other engineering disciplines was into the planning of new power plants, transmission lines and substations and their least cost solution interconnecting the new systems to the national grid.
The construction of new power plants, transmission lines and substations during his time was dictated by the power development program, a document updated on a quarterly basis by all concerned government agencies namely: economic, energy, environmental – with the government-owned utility company providing for their evaluation and review feasibility studies conducted under the short-term 5-year or 10-year power development program.
When the construction of a new power plant is finally approved by the government’s economic development authority, design engineers and consultants of the government utility company carry out final survey and investigation of the site. Engineering design and preparation of bid documents for the power plant and its transmission line’s construction is carried out as soon as all field data become available. The start of construction is within 3 to 5 years or longer depending on the type of power plant to be constructed. The new plant is put on stream to meet the country’s increased energy demand for the year it was forecasted and in step with its economic growth.
The author’s scope of work covers actual field survey and preparation of at least three transmission line routes for evaluation of all concerned agencies. The addition of new power plant and its associated transmission line requires a “load flow analysis”, a computer-based software that can simulate the actual flow of current and transmission line losses in the grid. The software determines the most ideal location of a new power plant with geographic and environmental issues seriously taken into consideration to determine – as much as possible – the least transmission line length and loses to the grid’s particular substation tapping point. Only the transmission line route and its load are evaluated for power plants dependent on fix hydro or geothermal source. The software is operated by utility personnel specially trained in its use.
Light Rail Transit System
The author’s recent undertaking is in the design of incoming medium voltage AC feeder/s and DC traction power supply of Light Railway Transit system including its protection, control and monitoring to construction supervision, erection and commissioning.
For further technical information on each subject we discussed, we provided under the “Suggested Reading” column at the bottom of the pages downloadable PDF or Word files from external sites, which our visitors might find helpful. Some of these also were our reference materials.