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Structural health monitoring using embeddable wireless sensors is a promising research area. Once embedded the wireless sensor antenna must operate efficiently in order to support data communication as well as battery charging using an integrated rectifying antenna (rectenna). In this paper the characteristics of an embedded microstrip patch antenna within concrete is studied as function of the air-gap and the concrete dielectric constant and loss tangent.

A new methodology is introduced solely for use in real-time local control of transient stability. The proposed method is based on localized transient stability of a power system. This is a completely new idea. In this method, the postfault power system is represented by a two-generator localized power system at the site of each individual generator. If each of these localized power systems reaches its stable equilibrium, then the power system reaches its stable equilibrium. Therefore, in terms of real-time local control of transient stability, if each of the localized power systems is driven to its respective stable equilibrium by local control actions with local computations using the locally measured data, then the power system is in stable equilibrium. Thus the method can be easily implemented for real-time local control of transient stability. This paper primarily focuses on the basic concepts of the method and presents some preliminary test results.Index Terms-localized power system, localized stability, realtime local control, transient stability.

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<p>Very recently, a new methodology was introduced solely for the purpose of real-time localized control of transient stability. The proposed new method is based on the localized transient stability of a power system. This is completely a new idea in transient stability. In this method, the post-fault power system is represented by a two-generator localized power system at the site of each individual generator. If each of these localized power systems reaches its respective stable equilibrium, then the full power system also reaches its stable equilibrium. Therefore, in terms of real-time localized control of transient stability, if each of the localized power systems is driven to its respective stable equilibrium by local control actions with local computations using the locally measured data, then the full power system is driven to its stable equilibrium. Thus the method can be easily implemented for real-time localized control of transient stability. In this paper, the details of the mathematical formulations are presented. Some interesting test results on the well-known New England 39-bus 10-generator system are also presented in this paper to demonstrate the potential of the proposed method for use in real-time localized control of transient stability.</p><p> </p>