A study of the effects of full three-phase representation in power system analysis

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1985
Authors
Mirheydar, Mahmood
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Electrical and Computer Engineering

The Department of Electrical and Computer Engineering (ECpE) contains two focuses. The focus on Electrical Engineering teaches students in the fields of control systems, electromagnetics and non-destructive evaluation, microelectronics, electric power & energy systems, and the like. The Computer Engineering focus teaches in the fields of software systems, embedded systems, networking, information security, computer architecture, etc.

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The Department of Electrical Engineering was formed in 1909 from the division of the Department of Physics and Electrical Engineering. In 1985 its name changed to Department of Electrical Engineering and Computer Engineering. In 1995 it became the Department of Electrical and Computer Engineering.

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1909-present

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  • Department of Electrical Engineering (1909-1985)
  • Department of Electrical Engineering and Computer Engineering (1985-1995)

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Electrical and Computer Engineering
Abstract

The effects of unbalances caused by untrasposed EHV transmission lines and unbalanced loads in power system analysis have been thoroughly analyzed and determined;In the steady-state analysis, it is concluded that three-phase representation of the system is necessary and the unbalance analysis needs to be performed at least once under specific system conditions to ensure a safe and normal operation of the system. The newly developed method is proved to be an efficient approach to be used in this type of analysis;In the electromagnetic transient analysis, it is concluded that untransposed transmission lines have no significant impact on the transient overvoltages caused by single line-to-ground fault clearing and, therefore, may be represented fully transposed. It is noted, on the other hand, that unbalanced loads can affect the transients and must be included in the analysis. It has been shown, however, that balanced initial conditions may be used to represent the network and the loads in the system.

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Tue Jan 01 00:00:00 UTC 1985