2 Power Delivery Systems

2.1 INTRODUCTION

Retail sale of electric energy involves the delivery of power in ready to use form to the final consumers. Whether marketed by a local utility, load aggregator, or direct power retailer, this electric power must flow through the local power delivery system on its way from power production to consumer. This transmission and distribution (T&D) system consists of thousands of transmission and distribution lines, substations, transformers, and other equipment scattered over a wide geographical area and interconnected so that all function in concert to deliver power as needed to the utility's consumers.

This chapter is a quick tutorial review on T&D systems, their mission, characteristics, and design constraints. ...

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