Eigenvalue and frequency-domain analysis of the intermountain power project and the wscc network
The Western Systems Coordinating Council (WSCC) has several interarea modes of oscillation in the range of 0.3 to 0.8 Hz. The results of an investigation of how various network parameters and operating conditions affect the stability of those modes are presented. Eigenvalue and frequency-domain techniques are used. The study results show that numerous system parameters can have a significant impact on overall network stability. These parameters can include control settings, such as those in HVDC systems or power system stabilizers, or operational parameters, such as scheduled tie-line flows. The results show that careful analysis and tuning of all significant controls in a large network are necessary to ensure overall system stability and satisfactory performance. >
Development and application of a comprehensive small signal stability package embedded in an automatic disturbance analysis multi-agent system
This work presents a case of integration of a small signal stability simulation algorithm in an Automatic Disturbance Analysis software. The small signal stability simulation algorithm is presented in a step by step solution of a chosen case. The algorithm is available for free download1, in order to allow others engineers to reproduce the results and to discuss the developed code. The algorithm was validated using benchmark software, integrated to a multi-agent system for automatic disturbance analysis. The algorithm performance was tested using disturbance cases, which presented satisfying results.
Prediction of net pressure on pressure equalized cavities
Abstract A numerical model has been developed for prediction of net pressure on pressure equalized cavities. The results based on this model show good agreement with those obtained from mock-up tests. Parametric studies verify that reductions in cladding load are possible, with proper design of curtain walls.