Precision Frequency Control, Two-Volume Set: Precision by Author Unknown

By Author Unknown

Show description

Read or Download Precision Frequency Control, Two-Volume Set: Precision Frequency Control, Volume 1: Acoustic Resonators and Filters PDF

Similar power systems books

Fundamentals of Power Electronics

In lots of collage curricula, the ability electronics box has advanced past the prestige of comprising one or special-topics classes. frequently there are a number of classes facing the ability electronics box, masking the subjects of converters, motor drives, and tool units, with in all likelihood extra complex classes in those components besides.

Electric Motors and Drives. Fundamentals, Types and Applications

Electrical cars and Drives is meant for non-specialist clients of electrical cars and drives, filling the distance among maths- and theory-based educational textbooks and the extra prosaic 'handbooks', which supply necessary element yet little chance for the advance of actual perception and knowing.

Lord Kelvin : his influence on electrical measurements and units

Kelvin's nice accomplishment was once to collect the entire experimental scientists of his time into one co-operative organization for investigators whose person efforts have been aided through their mixed effects, expressed in a notation and defined in language understood by means of all people. summary: This ebook concentrates upon the paintings of Lord Kelvin (William Thomson) in 3 stages; discovery of the basic options and coding them into common legislation, best the adoption of the metric procedure, and securing around the globe use of devices and criteria (now the IEC system).

Extra info for Precision Frequency Control, Two-Volume Set: Precision Frequency Control, Volume 1: Acoustic Resonators and Filters

Example text

U. 19. Power oscillation dumping by SVC and STATCOM The shunt compensation can also be useful to damp power oscillations. 19 show oscillations of the G angle, oscillations of the transmitted power and degree of the shunt compensation. As one can see, the level of shunt compensation should be maximum-capacitive when generator accelerates – to maximize the transmittable electric power – and minimum-inductive when generator decelerates – to minimize the transmittable electric power. 3 Combined Devices The Unified Power Flow Controller is one of the most versatile members of the Flexible AC Transmission Systems family using power electronics to control all parameters that affect power flow on a transmission line [94, 95].

30 a generalized control algorithm is given. It consists of two parts. In the part dedicated to the APF, an algorithm produces signals allowing the APF to secure the stabilized sinusoidal voltage set at the point of common coupling P. In second part the gate control signals are determined, and used to delay the ignition of the converter valves and therefore to keep the DC voltage at the reference level Vd* . - KU v*3 Vd APF D Rec. Synch. + Vd* P W M - Reg. 30. Simplified control algorithm 4 Modern Power Electronics Systems for Transmission Control Unified Power Flow Controllers can control active and reactive power transmitted through the transmission line.

Series compensation can also be useful to damp power oscillations. 12 show (from above) oscillations of the G angle, oscillations of the transmitted power and degree of the series compensation. As one can see the level of series compensation should be maximum (capacitive) when generator accelerates - to maximize the transmittable electric power, and minimum (inductive) when generator decelerates - to minimize the transmittable electric power. wG ! 12. Power oscillations dumping by SSSC and TSSC Except power flow capabilities and dynamic problems there are other issues related to the FACTS devices - their location and cross-couplings.

Download PDF sample

Rated 4.28 of 5 – based on 44 votes

Related posts