Development of wide area protection for electrical distribution system in Vientiane capital

การพัฒนาการป้องกันในพื้นที่กว้างสำหรับระบบจำหน่ายไฟฟ้าในนครหลวงเวียงจันทน์

Name: Aksacksy Philavong

ThaSH: Electric power distribution -- Laos -- Vientiane

Classification :.DDC: 621.319

ThaSH: Electric power transmission -- Laos -- Vientiane

ThaSH: Electric power systems -- Laos -- Vientiane

ThaSH: Electric utilities -- Laos -- Vientiane

ThaSH: Electrical engineering

Abstract: This thesis studies the development of wide area protection. The studied case is located in Vientiane Capital, Lao PDR which consists of seven substations by the connected the loop network in 22 kV distribution system. The characteristics of the protection system in the area are based on individual setting, when the fault area in mainly circuit, it may affect the operation of protection which is as a result from the protection setting may not coordinate in all happened situations. Therefore, the wide area protection needs to be considered, especially in the big city. The objective of this research considers the protection problem in the loop model network from the setting which does not coordinate for clearing the fault, is also focusing on ranking on the problem from contingency event. Especially, the setting operating time of protective device must coordinate with overcurrent relays when has a contingency event which make the outage electricity. However, these problems will be corrected by finding the method for the setting in the coordinating time interval (CTI) and together with conditional in the contingency analysis (N-1). This paper presents created methodologies for checking and coordination of the connected the loop network between substations with substations. A DIgSILENT software will be used in this paper by analyzing system, a DIgSILENT Programming Language function which will be used as a tool for enabling the detection of failure system and corrective in coordination problem of overcurrent relays. The result shows the suitability of the coordination time in the protective system together with an analysis of the contingency condition. Consequently, the preventive detection together with the coordination of the overcurrent relays has an important the protection system which will reduce the interruption of the electrical energy to the public at the housing, business, and various industry sectors. Moreover, assist increased reliability of the system and correcting the outage problem in a wide area.

Chiang Mai University Library

Address: Chiang Mai

Email: cmulibref@cmu.ac.th

Name: Kanchit Ngamsanroaj

Role: Chairman

Name: Suttichai Premrudeepreechacham

Role: Member

Name: Yuttana Kumsuwan

Role: Member

Name: Paramet Wirasanti

Role: Member

Created: 2017

Modified: 2018-10-18

Issued: 2018-10-18

วิทยานิพนธ์/Thesis

application/pdf

CallNumber: Th 621.319 A315D

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Electrical Engineering

Grantor: Chiang Mai University

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