By EL-Shimy Mohamed
This e-book is written for engineers desirous about the operation, keep watch over, and making plans of electrical energy platforms. additionally, the booklet presents details and instruments for researchers operating within the fields of energy procedure protection and balance. It comprises volumes. the 1st quantity offers conventional suggestions for the steadiness research of huge scale strength structures. furthermore, an summary of the most drivers and necessities for modernization of the normal tools for on-line functions are mentioned. the second one quantity offers options for on-line safeguard evaluation and corrective motion reports. moreover, the impression of variable new release at the safety of strength platforms is taken into account within the moment quantity. the 1st quantity could be regarded as a historical past builder whereas the second one quantity is meant for the insurance of part innovations and techniques for on-line dynamic protection reports.
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Extra info for Dynamic Security of Interconnected Electric Power Systems - Volume 1
Generally, components that are electrically close to the disturbance are modelled more accurately in comparison with electrically far components. The justification of this method is based on the dissipation effect which defines the extent or spreading of a distustance in power systems. The dissipation level depends on the topology of power system, parameters of its components, the geographical distance between components, the operating conditions, and the strength of the disturbance. Topological reduction: which consists of either eliminating or aggregating selected nodes in order to reduce the size of the equivalent network and the number of generating units to be modelled.
The presented linearized model can also simulate other disturbances such as sudden changes in the mechanical power input to generators as described earlier. This will be demonstrated for the purpose of coherent groups identification by a numerical example. 7: Correlation factor analysis for the nonlinear responses of the NPCC system with all generators represented by transient model and equipped with AVR G G G G G G G G G G G G G G G G G G Fig.
The nonlinear absolute angle response of the NPCC system for fault at bus 2 cleared after 3 cycles by removing line 2-19 with generators represented by transient model is shown in Fig. 18. The impact of the generator excitation control is considered by equipping all generators with a simple Automatic Voltage Regulator (AVR) model shown in Fig. 19. 025, VRMAX = 10, and VRMIN = -10. (All on 100 MVA base). The nonlinear absolute angle response of the NPCC system for fault at bus 2 cleared after 3 cycles by removing line 2-19 with generators equipped with the proposed AVR and represented by transient model is shown in Fig.