1. Power System Analysis (EELE 4351)

2. site.iugaza.edu/emp/ajasser
Assad Abu-Jasser, PhD Electric Power Engineering The Islamic University of Gaza
site.iugaza.edu/emp/ajasser

3. Capacitance of Transmission Lines
Chapter 5
Capacitance of Transmission Lines

4. Capacitance of Transmission Lines Introduction

5. Electric Field Long Straight Conductor

6. Potential Difference Between Two Points Due to a Charge

7. Capacitance of a Two-Wire Line
Work done to move +q between a and b

8. Capacitance of a Two-Wire Line Line-to-Line and Line-to-Neutral

9. Transmission Lines Capacitive Reactance ACSR Conductors Tabulated Values

10. Example 5.1
Find the capacitive susceptance per mile of a single-phase line operating at 60-Hz. The conductor is partridge, and spacing is 20 ft between centers.

11. Capacitance of a Three-Phase Line Equilateral Spacing

12. Capacitance of a Three-Phase Line Unsymmetrical Spacing

13. Example 5.2
A single-circuit three-phase line operated at 60-Hz is arranged as shown. The conductors are ACSR Drake. Find the inductive reactance per mile per phase considering a completely transposed line. Find the capacitance and the capacitive reactance for 1 mi of the line. If the length of the line is 175 mi and the normal operating voltage is 220-kV, find the capacitive reactance to neutral for the entire length of the line, the charging current per mile, and the total charging megavoltamperes.

14. Capacitance of a Three-Phase Lines Effect of Earth

15. Capacitance of Three-Phase Line Bundled Conductors

16. Example 5.3
Each conductor of the bundled-conductor line shown is ACSR, cmil Pheasant. Find the capacitive reactance to neutral in ohms-kilometer (and ohm-mile) per phase for d=45 cm.

17. Capacitance of Three-Phase Lines Parallel-Circuits

18. Example 5.4
A three-phase double-circuit line ACSR is composed of cmil 26/7 Ostrich conductors arranged as shown. Find the 60-Hz inductive reactance and capacitive susceptance in ohms per mile per phase and siemens per mile per phase, respectively.

19. End Of
Chapter Five