Document Type : Research article

Authors

• Sadegh Rekabeslami Zadeh ¹
• Gholamali Torabi ²
• Sasan Najafi Birgani ²
• Mehdi Enayat Zare ³
• Mostafa Sarlak ¹

¹ Department of Electrical and Computer Engineering, Jundi-Shapur University of Technology, Dezful, Iran

² Khuzestan Regional Electricity Company

³ Department of Electrical and Computer Engineering, Jundi Shapur University of Technology, Dezful, Iran

Abstract

Capacitor banks are commonly used in power grids for purposes such as power control and power factor correction. Capacitor banks are exposed to high-amplitude and high-frequency currents in circuit breaker switching. Also, if a fault occurs near the substation where the capacitor bank is installed, the energy stored in the capacitor bank at the fault location is discharged. The discharge of this energy causes currents to pass through at a high frequency and in large quantities. These high currents cause damage to the circuit breaker. To prevent these deleterious effects, the use of transient limiting reactor in capacitor banks is recommended. In this paper, an algorithm for determining the desirability of the amount of transient limiting reactors in shunt capacitor banks is designed based on the IEC Std 62271 standard. The algorithm was then developed for use in the electrical industry in the form of a software called Transient Analyzer. In the developed software, the C# programming language is used to develop and implement algorithms and data processing. The software has been tested and debugged using data from 20 regional electricity substations in Khuzestan. The proposed software is highly efficient compared to the conventional simulation method and can be used with simple data entry and fast processing and presentation of results and data analysis in a short time.

Keywords

• Inrush currents
• Shunt capacitor bank
• Transient limiting reactor
• transient analysis software
• IEC standard

Main Subjects

• Distribution Systems