Fs Chapter 1

8/8/2019 Fs Chapter 1

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PROJECT FEASIBILITY

STUDY ONSECTIONALIZATION OF

FEEDER LINES IN TERMSOF CRITICAL LOADS IN

OPOL AND LUMBOSUBSTATION OF

MORESCO - 1


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1.1 INTRODUCTION

SECTIONALIZERS - The sectionalizer is a self-

contained, circuit-opening device used in conjunction

with source-side protective devices, such as reclosersor circuit breakers, to automatically isolate faulted

sections of electrical distribution systems. Power to

operate the control circuitry and the mechanism is

obtained from the line through the sensing-currenttransformers. No auxiliary power supply, external

connections, or external equipment is required.


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The sectionalizer senses current flow above a preset

level, and when the source-side protective device

opens to de-energize the circuit, the sectionalizer

counts the overcurrent interruption. Sectionalizers are

an economical method of further improving service on

distribution lines equipped with reclosers or reclosing

circuit breakers. They isolate permanent faults and

confine outages to smaller sections of line.

Since the sectionalizer does not require a time-current

base for its operation, it is easily coordinated with

other protective devices on the system. It provides an

additional step of protection without adding a

coordinating step to the protective scheme.

Sectionalizers can be used in place of fuses or between


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the reclosing device and a fuse without setting changes

to other devices.

A sectionalizer has distinct application advantages:

y It can be applied between two protective devices

having operating curves, which are close together.This is a vital feature in a location where an additional

step in coordination is not practical or possible.

y It can be used on close-in taps where high available

fault current prevents coordination with fuses.y It has fault close and latch capability for any fault-

closing operations.


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Major classifying features of sectionalizers are as

follows:

y Single-Phase Hydraulic

y Three-Phase Hydraulic

y Three-Phase Electronic


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Three-Phase Sectionalizers

There are various types of three-phase sectionalizersavailable to satisfy multiple applications at the mosteconomical cost. They are used to segment distribution

feeders into multiple zones of protection. Three-phasesectionalizers are applied with three-phasesimultaneous-opening backup devices. They have all ofthe advantages of single-phase sectionalizers and have

additional application flexibility with high ratings andelectronic control options.


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ELECTRIC DREAMS COME TRUE

MORESCO 1


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VISION

MORESCO-1, world-class power provider of choice.

MISSION

Partners with communities for economic development

and environment protection; Provides business

partners with utmost value; and Provides career

advancement opportunities and work-life quality to

employees and staff.

CORE VALUES

The path towards the Vision andMission ofMORESCO

1 shall be guided by these Core Values...


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Passion for Success

We will constantly strive for excellence, be the best

we can be in everything we do.We will be proactive,

driven by a sense of urgency, competitiveness, and

commitment to results.Social Responsibility

We believe that social responsibility is an integral part

of our business.We are committed to helping improve

lives of people and in protecting the environment in the

communities we serve.


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Integrity

In the conduct of our business, we will be guided by what is

ethical, fair, and right.We are committed to good

governance and the highest moral standards.


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1.2 STATEMENT OF THE PROBLEM:

As per inquiries inMORESCO 1, the researcherobtain problems regarding power quality. In order to

meet the needs of the customer, the study focuses on

the sectionalizing of the feeder lines in terms of critical

loads.1.3 SCOPE AND LIMITATIONS:

Power distribution ofMORESCO 1 has a large

concern to be considered, the researcher limit the

study on sectionalizing the feeder lines of Opol and

Lumbo substations.


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1.4 Significance of the study:

The study is important for the benefits of both

distributor and the customers, among are as follows:Ensure the quality of electric power in the

distribution system.

Distribution system will be operated in safe andefficient manner and with a high degree of

reliability.

Meet the specific needs of the customers in thesystem.

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