Abstract
The connection point of a VSC-HVDC for the transmission of RES electricity, can be located far from the large generation plants, leading to a weak grid connection. This paper analyses the limitations on the power flow transfer through a VSCHVDC system connected to a weak grid. First, the impact of the angle and voltage stability limits and the VSC rating are examined. Then, the power transfer capability curves of a VSC connected to a weak grid of an SCR of 1.1 pu by means of an L-interface are calculated. Finally, the impact of providing additional reactive power (Q) support is investigated through utilising a capacitor at the connection point. It has been shown that an additional Q-support of 0.2 pu can maintain the transfer of full power without the need for oversizing the VSC.
| Original language | English |
|---|---|
| Title of host publication | AC and DC Power Transmission, 11th IET International Conference on |
| Number of pages | 5 |
| Volume | 2015 |
| Edition | CP654 |
| DOIs | |
| Publication status | Published - 13 Jul 2015 |
| Externally published | Yes |
| Event | 11th IET International Conference on AC and DC Power Transmission - Birmingham, United Kingdom Duration: 10 Feb 2015 → 12 Feb 2015 http://conferences.theiet.org/acdc/index.cfm |
Conference
| Conference | 11th IET International Conference on AC and DC Power Transmission |
|---|---|
| Country | United Kingdom |
| City | Birmingham |
| Period | 10/02/15 → 12/02/15 |
| Internet address |
Fingerprint
Keywords
- capability curves
- short circuit ratio (SCR)
- VSC-HVDC
- weak grids
Cite this
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Capability curves of a VSC-HVDC connected to a weak AC grid considering stability and power limits. / Egea-Alvarez, Agustí; Barker, Carl; Hassan, Fainan; Gomis-Bellmunt, Oriol.
AC and DC Power Transmission, 11th IET International Conference on. Vol. 2015 CP654. ed. 2015.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book
TY - GEN
T1 - Capability curves of a VSC-HVDC connected to a weak AC grid considering stability and power limits
AU - Egea-Alvarez, Agustí
AU - Barker, Carl
AU - Hassan, Fainan
AU - Gomis-Bellmunt, Oriol
PY - 2015/7/13
Y1 - 2015/7/13
N2 - The connection point of a VSC-HVDC for the transmission of RES electricity, can be located far from the large generation plants, leading to a weak grid connection. This paper analyses the limitations on the power flow transfer through a VSCHVDC system connected to a weak grid. First, the impact of the angle and voltage stability limits and the VSC rating are examined. Then, the power transfer capability curves of a VSC connected to a weak grid of an SCR of 1.1 pu by means of an L-interface are calculated. Finally, the impact of providing additional reactive power (Q) support is investigated through utilising a capacitor at the connection point. It has been shown that an additional Q-support of 0.2 pu can maintain the transfer of full power without the need for oversizing the VSC.
AB - The connection point of a VSC-HVDC for the transmission of RES electricity, can be located far from the large generation plants, leading to a weak grid connection. This paper analyses the limitations on the power flow transfer through a VSCHVDC system connected to a weak grid. First, the impact of the angle and voltage stability limits and the VSC rating are examined. Then, the power transfer capability curves of a VSC connected to a weak grid of an SCR of 1.1 pu by means of an L-interface are calculated. Finally, the impact of providing additional reactive power (Q) support is investigated through utilising a capacitor at the connection point. It has been shown that an additional Q-support of 0.2 pu can maintain the transfer of full power without the need for oversizing the VSC.
KW - capability curves
KW - short circuit ratio (SCR)
KW - VSC-HVDC
KW - weak grids
UR - http://www.scopus.com/inward/record.url?scp=84939233026&partnerID=8YFLogxK
U2 - 10.1049/cp.2015.0091
DO - 10.1049/cp.2015.0091
M3 - Conference contribution book
SN - 9781849199827
VL - 2015
BT - AC and DC Power Transmission, 11th IET International Conference on
ER -