Simulation and analysis of the effect of single-pole auto-reclosing on HV transmission lines switching overvoltages

Abstract

In this paper a novel method of ATP (Alternative Transients Program) simulation for single-pole auto-reclosing is introduced. This paper presents an investigation of single-pole auto-reclosing on HV transmission lines. By simulating real trapped charge, overvoltage profile is monitored. Most of the faults on HV transmission lines are single-pole to ground. In order to have a general overview of single-pole auto-reclosing and calculating overvoltages simulation should be performed. Using ATP software, single-pole auto-reclosing on two real 400 kV transmission lines is simulated and the results are discussed. Details of system modeling are outlined. The simulation method and modeling of a real single-pole auto-reclosing by ATP is presented in detail. Effects of transmission line length as well as number of circuits are analyzed. Effects of reclosing time on single-pole switching overvoltages are outlined. Differences between single-pole auto-reclosing at different phases due to position of conductors are also presented.

Switching impulses of overvoltage phenomena of power system in 220 KV transmission lines inter between substation case analysis

“…This fault becomes from switching phenomena and due to overvoltage from circuit breaker and load switching operation times. This overvoltage creates the maximum stress on the transmission system and substation [5]. The major two categories are following bellow that: 1.…”

“…Step 2: Switching with of Pre-Insertion Resistor Result: Switching with of the Pre-Insertion Resistor The prevent inrush current of the switching closed for pre-Insertion resistor (PIR) is used. The designs of switch for reduce losses against the PIR values of the switch are considered of negligible resistance to take over the main switch voltages waveform from steady state links [5]. The switch 1 closing times is 0.001s PIR value of switch 1 is 200Ω The closing times of switch 2=0.0011s Internal resistor value of switch 2 is 10 Ω…”

New controlled switching approach for limitation of transmission line switching overvoltages

“…However, to save the space, only these two values are reported. Moreover, the 86% coverage is a conventional value which is used in many statistical switching overvoltage studies [14, 15, 17].…”

“…In [14], effects of single‐pole auto‐reclosing are analysed. Based on the results of this reference, single pole auto‐reclosing typically, but not necessarily, will result in lower overvoltages, compared with three‐phase auto‐reclosing.…”