Commercial-Facility Electricity Distribution Design

2017 ELE Engineering Design Project (RC02)


Faculty Lab Coordinator

Richard Cheung

Topic Category

Power / Controls

Preamble

A proper design of an electricity distribution system is significant for commercial facilities regarding to their safety, reliability, and cost/consequence of power outages. It is necessary to consider the operation safety and the costs/consequences of power outages due to loss of businesses and damage of devices/properties, when making design decisions for either building a new commercial-facility electricity distribution system or refurbishing an existing distribution system. This project is to design a new electricity distribution system for a commercial facility. Components (bus bars, feeders, cables, transformers, breakers, disconnects, fuses, etc.) in every circuit/branch of the commercial-facility electricity distribution network shall be sized and rated adequately to be able to carry the required commercial loads, withstand typical surges/transients, and interrupt faults. An effective protection system, embedded with coordinated automatic fault-clearing actions, is to be designed and implemented in the distribution network to minimize outages/damages due to faults of various kinds and occurrences.

Objective

The objective of this project is to design a new reliable electricity distribution network for a typical commercial facility, with an effective protection system to be embedded in the network, to offer safe and reliable operations and to minimize power outages and facility damages due to various fault conditions.

Partial Specifications

Design an electricity distribution network to carry typical commercial loads.
Design a protection system embedded in the network to minimize power outages and facility damages.
Coordinate protections of major network components including supply lines, transformers, switchgears, fuses, computers, printers, refrigerators, and other typical commercial loads.
Provide detailed design data such as value, size, rating, length, manufacturer, and model/part# for every component in the power distribution network.

Suggested Approach

Study IEEE Standard 241-1990, “IEEE Recommended Practice for Electric Power Systems in Commercial Buildings”.
Study IEEE Standard 493-2007, “IEEE Recommended Practice for the Design of Reliable Industrial and Commercial Power Systems”.
Study IEEE Standard 399-1997, “IEEE Recommended Practice for Industrial and Commercial Power Systems Analysis”.
Study IEEE Standard 242-2001, “IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power System”.

Group Responsibilities

Determine the kind and size of the commercial facility that the distribution system is to be designed to supply electricity to. Define a preliminary configuration of the commercial-facility electricity distribution system to be designed. Divide the preliminary configuration into three (3) sections, of which each section requires equivalent amount of design work and level of design difficulty to solve. Each designer to carry out one (1) section of the whole design. Discuss each section of the preliminary system with the FLC, and obtain the approval from the FLC prior to carrying out the detailed individual design work. During the individual design process and particularly near the end of individual design work, coordinate the designs of all 3 sections and finally produce one complete design of a reliable electricity distribution network for the commercial facility.

Student A Responsibilities

Carry out Section 1 of the whole design, with a prior approval from the FLC. Propose the milestones for Section 1 design work, and obtain the FLC’s approval for the milestone proposal. Provide the detailed design for all Section-1 network components (bus bars, feeders, cables, transformers, breakers, disconnects, fuses, etc.) with detailed data such as value, size, rating, length, manufacturer, model/part#, etc. Provide the protection for all Section-1 network components and their protection coordination. Report in writing the findings of each milestone.

Student B Responsibilities

Carry out Section 2 of the whole design, with a prior approval from the FLC. Propose the milestones for Section 2 design work, and obtain the FLC’s approval for the milestone proposal. Provide the detailed design for all Section-2 network components (bus bars, feeders, cables, transformers, breakers, disconnects, fuses, etc.) with detailed data such as value, size, rating, length, manufacturer, model/part#, etc. Provide the protection for all Section-2 network components and their protection coordination. Report in writing the findings of each milestone.

Student C Responsibilities

Carry out Section 3 of the whole design, with a prior approval from the FLC. Propose the milestones for Section 3 design work and obtain the FLC’s approval for the milestone proposal. Provide the detailed design for all Section-3 network components (bus bars, feeders, cables, transformers, breakers, disconnects, fuses, etc.) with detailed data such as value, size, rating, length, manufacturer, model/part#, etc. Provide the protection for all Section-3 network components and their protection coordination. Report in writing the findings of each milestone.

Course Co-requisites

ELE 746

 


RC02: Commercial-Facility Electricity Distribution Design | Richard Cheung | Not yet submitted at No time