Skip to main content

PRESENTATION ON POWER DISTRIBUTION SYSTEM LOSSES BY TAO HONG

PRESENTATION ON POWER DISTRIBUTION SYSTEM LOSSES BY TAO HONG
Presented by Tao Hong, Ph.D., lecture at ABB, FL, April, 2011

This is a very good presentation prepared by Tao Hong. He is an Analytical Consultant in SAS Institute Inc. where he focuses on revenue optimization, retail forecasting and demand response. Sir Tao Hong is also a Business Knowledge Series Instructor in the same institute. He is an Engineer, Sr. Engineer, Principal Engineer in Quanta Technology, LLC where he is in charge of Load forecasting, T&D Planning, system loss evaluation, system reliability analysis, load modelling, and renewable energy.

Abstract
This presentation introduces the basic concept, assessment, and mitigation of power distribution system losses. During the seminar, the participants learn how to calculate transformer and line losses, and to optimally place capacitors to reduce losses.

Overview
    Introduction
    Basic concepts
    Definitions
    Calculation
    Causes and mitigation
Fundamentals
    Load factor
    Loss factor
    Coincidence/diversity factor
    Power factor
    Peak responsibility factor
Transformer Losses
    A basic transformer
    Transformer model
    No-load losses
    Load losses
    Reactive losses
Line Losses
    1/3 rule
    Generic line losses
    Primary line losses
    Lateral line losses
    Distribution factor
Capacitor Applications
    Fundamentals
    Capacitor placement
    Switched/fixed capacitors
    Capacitor control
    Capacitor switching



Comments

  1. Tao Hong is my idol. Especially his studies on http://www.transmission-line.net/
    transmission lines

    ReplyDelete

Post a Comment

Popular posts from this blog

PARTS OF A POWER TRANSFORMER

What are the name of the basic parts of a Power Transformer? We can not deny the fact that only a handful of electrical engineering students are presently familiar with power transformers especially on what it looks like. Unlike a transformer we found in our homes, a power transformer’s appearance and construction is somewhat more complicated. It is not just a simple winding with a primary and secondary terminal although basically any transformer has one. The function that a power transformer plays in an electrical system is very important that an electric utility can not afford to loss it during its operation. Our discussion here will focus more on the basic parts and functions of a power transformer that are usually tangible whenever you go to a substation . Although not all power transformers are identical, nonetheless they all have the following listed parts in which the way of construction may differ.

ELECTRIC MOTOR NAMEPLATE SPECIFICATIONS

How do we interpret an electric motor nameplate? Motor standards are established on a country by country basis.Fortunately though, the standards can be grouped into two major categories: NEMA and IEC (and its derivatives). In North America, the National Electric Manufacturers Association (NEMA) sets motor standards, including what should go on the nameplate (NEMA Standard MG 1-10.40 "Nameplate Marking for Medium Single-Phase and Polyphase Induction Motors").

DISADVANTAGES OF Y-Y CONNECTION IN THREE PHASE SYSTEM

What are the disadvantages in using y-y connection? The Y-Y transformer connection was poorly understood in the early days of power engineering and it received a very bad reputation when it was first used; in fact, this connection was avoided for a long time until its limitations were overcome by good engineering practice. Some of the inherent disadvantages of the Y-Y connection are discussed below: