Effect of series compensation on the voltage instability of EHV long lines

✍ Scribed by C.S. Indulkar; B. Viswanathan

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 511 KB
• Volume: 6
• Category: Article
• ISSN: 0378-7796
• DOI: 10.1016/0378-7796(83)90020-2

✦ Synopsis

In this paper, the effects of the operating conditions and dynamic performance on the voltage instability phenomena of EHV lines with series compensation is discussed. Exponential modelling of loads and exact long-line equations are used in the analysis. Graphs showing the variations of the receiving-end voltage and the transformer tap ratio with time for an assumed load variation are given. It is shown that when series compensation is provided, the chances of voltage instability occurring are less. The effect of switched series compensation on the voltage instability is also investigated. The error in using shortline equations for the analysis of voltage instability phenomena is highlighted. The random loading conditions of the system and the random load parameter variations are also considered for the first time in analysing the voltage instability phenomenon.