SENSITIVITY ANALYSIS OF FAULT LOCATOR PERFORMANCE

Abstract

Fault locators are very important for quick detection and rectifying of fault in electric power system. Its construction depends upon precise valued L,C,R components. In their previous papers the authors have described designed details and performance of the fault locator where as this paper describes analysis of its working ability during unsuitable working conditions of temperature, humidity etc. Due to the delicate construction of the fault locator components and high selectivity requirement for blocking of the resonant frequency together with the narrow band of frequencies around it by the trap circuit and filtration of these by the stack tuner, the fault locator needs (i) accurate designing of its parameters (ii) simulation of its performance (iii) precise manufacturing and (iv) field testing before offering it to its practical commercial use. All these steps are necessary to ensure its reliable performance. Usually all these precautionary steps are enough for successful launching of the product, performance of the fault locator during rough climatic conditions cannot be guaranteed due to distributed capacitance of stack tuner. To reduce chances of failure, the fault locator needs careful analysis to make it withstand the rough and tough hostile conditions of cold, hot and humid nature of outdoor installation. In this paper, authors describe a simple procedure to analyse performance of the fault locator under harsh conditions of the temperature. The result of the test analysis will be discussed and concluded for determination of its usefulness. The analytical test procedure provides clue of stability of the fault locator in changing atmospheric temperature.