Abstract
This paper discusses the enhancement of interface flow margins of power systems using Back-to-Back (BtB) converters. The interface flow margin is a measure of how much additional active power can be transferred from the external regions to the study region of interest, satisfying the power flow equations. BtB converters are series-type equipment that mainly controls active power injection through them. The establishment of BtB converters onto transmission lines can decrease the fault current level of the alternate current (AC) power network due to the decoupling effect by their direct current (DC) links. This paper employs FV (Interface Flow-Voltage) analysis to determine interface flow margins for the study systems with BtB converters and evaluates the controllability of BtB converters on candidate locations by observing the margin enhancement sensitivities. Furthermore, the paper provides an optimization formulation for adequately setting BtB parameters using the sensitivity information to satisfy the given criterion of interface flow margins.
| Original language | English |
|---|---|
| Pages (from-to) | 5678-5685 |
| Number of pages | 8 |
| Journal | International Review of Electrical Engineering |
| Volume | 7 |
| Issue number | 5 |
| State | Published - 2012 |
Keywords
- Back-To-Back converter
- FV analysis
- Interface flow margins
- Margin enhancement
- Parametric sensitivity