Showing papers on "Stand-alone power system published in 1975"

System requirements for dynamic performance and response of generating units

Abstract: Starting from a discussion of the fundamental characteristics of modern interconnected power systems, this paper goes on to categorize requirements for dynamic performance and response imposed on the aggregate generation which supplies the system. Both normal and abnormal operating modes are considered. The performance and response requirements are shown to stem from basic needs to maintain voltage, frequency, time, and continuity of service as well as the secondary requirements of maintaining operating economies and controlling inadvertent interchange between neighboring power systems. Typical data taken from operating records are used to illustrate and quantify several of the response requirements.

Electricity generation and supply

Abstract: The paper reviews the reserves of fossil, nuclear and other sources of primary energy available for future use and the current consumption rates. Reference is made to the increasing conversion of abundant coal and nuclear fuels into electricity for delivery of energy and the saving of more scarce direct burning fuels (such as oil and gas) that can be achieved, particularly by greater use of electricity for transportation. The resources of the Australian electricity authorities are discussed to illustrate that they could readily cope with a substantial increase in load from battery electric vehicles and electric traction within their normal growth patterns. /Author/TRRL/

Process Control Protection Against Power Line Interruptions

Abstract: Power dips, interruptions, and disturbances occur frequently throughout a plant power distribution system that adversely affect plant lighting, computers, process controls, and drive systems. Critical processes that must operate continuously require an uninterruptible power supply to protect against both long-and short-term interruptions. However, most industrial processes are not critical and need only be protected against power transients and short duration outages. Process equipment with properly supplied ride-through capability can prevent waste and downtime. It is the intent of this paper to discuss short duration power line disturbances; the type of , control and stored energy system available to protect against these disturbances; and the advantages and disadvantages of the various approaches available to ride through power line disturbances.

Low cost solar cells

Abstract: To make a significant impact on the total National energy supply by any form of solar energy utilization, two basic conditions will have to be met: 1). The systems will have to be installed over an adequately large area, and 2). The systems will have to be sold at an adequately low price to permit such large scale instalation without upsetting the economic system. The second statement means, that complete photovoltaic systems, which will be in competition with other methods of generating electric power such as coal fired or nuclear plants will have to be sold in the range of 20 to 100 $/m2of receiver area based on current values. The annual production rate required to achieve significant impact within 20 years is around 500km2, a million times the current production rate.