Distributed Generation is the generation of electricity from many small energy sources and is located closer to the user, or customer. The purpose of using distributed generation is to improve voltage profile, voltage stability and to minimize power losses. This paper presents an overview of research and development work carried out in the field of Distributed Generation. This paper also discusses the key issues related to optimal placement and size of distributed generation. Types of distributed generation, technology used for distributed generation and related terms are also discussed.

Reactive power dispatch plays a main role in order to provide good facility secure and economic operation in the power system. In a power system optimal reactive power dispatch is supported to improve the voltage profile, to reduce losses, to improve voltage stability, to reduce cost etc. This paper presents a brief literature survey of reactive power dispatch and also discusses a comparative study of conventional and evolutionary computation techniques applied for reactive power dispatch. The paper is useful for researchers for further research and study so that it can apply in the various areas of power system.

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This paper presents the implementation of operational transconductance amplifier using pspice. Spice is a general purpose circuit program that simulates electronic circuits and can perform various analysis of electronic circuits. So with the help of pspice, the analysis of operational transconductance amplifier has been proposed. In this paper, the circuit of operational transconductance amplifier is designed using JFET. The JFET is a symmetric device, however it is useful in circuit design to designate the terminals.