A thesis submitted to Institut Teknologi Brunei for the partial fulfilment of the requirements for the degree of Master of Science by Research Electrical and Electronic Engineering ABSTRACT
Brunei, with a geographical area of about 5,765 sq. km, is 99% electrified with a maximum load of 410 MW in the year 2012. The number incidents of power outages of more than 1 hour duration in a year in 2010 is 300. In alignment with the Brunei Darussalam's Energy White Paper, the Energy Department Prime Minister Office (EDPMO) had developed 10 key performance indicators one of which the Department of Electrical Services (DES) will increase its reliability and reduce the number of power outage incidents to less than 50 in the year 2035. With this target in mind, the DES spends a large sum of capital and maintenance budget collectively on a huge number of distribution and transmission improvement projects. With the increase of new loads (linear and non linear) from new residential, commercial and industrial developments, if not given the proper attention, the possibility of increasing the system breakdown statistics due to power quality phenomenas will increase. These statistics will affect customer's view and confidence of the utility's ability to provide reliable and continuous electrical power supply.
A power utility consists mainly of three different sections namely the generation section which generates the electrical power, the transmission section which distributes electrical power at a higher voltage to the distribution loads and the distribution section which distributes the electrical power to the consumers at a lower voltage level. A distribution network usually consists of several components mainly 11kV switchgears, ring main units, transformer and cables. It is the weakest link between the source of supply which is the generation and the customer load points.
In this thesis, a load flow study on a selected DES 11kV distribution network is done before harmonics studies were simulated. Several studies had been made by simulation as well as site measurements to investigate whether the selected distribution network is affected by harmonics. Measurements on several different sites had also been made to compare the impacts of harmonics on three different sectors namely the commercial, light industrial and the offices.
Thesis (Degree) - Universiti Teknologi Brunei
Includes bibliographical references
Universiti Teknologi Brunei --Thesis
Thesis writing Electric power--Quality--Brunei Electric power systems--Brunei