Enhanced long-run incremental cost pricing considering the impact of network contingencies

Research output: Contribution to journalArticle

  • 18 Citations

Abstract

This paper improves the existing long-run incremental cost (LRIC) pricing which forms the basis for one of the two common charging methodologies that are to be adopted by the U.K.'s seven distribution network operators for charging customers connected at extra-high voltage (EHV) distribution networks from April 2012. The original model is expected to respect network security while evaluating charges based on the extent of the use of the network, which it achieves by reshaping components' capacity with their contingency factors into maximum available capacity. It then identifies the impact of a nodal injection on each component under normal conditions within the threshold of the maximum available capacity. The problem with the LRIC is that it assumes that the impact from a nodal injection is the same under both normal and contingent states, thus underestimating its impact under contingencies. In this paper, the original LRIC model is improved by considering the respective impacts from users under both normal and contingent conditions. The improved model runs incremental contingency flow analysis to determine how they affect components' flows under contingencies. In order to illustrate the differences in the reinforcement horizons, a comparison of the original and enhanced approaches is carried out on three basic distribution networks: single-branch, parallel-branch, and meshed. The new approach chooses the smaller horizons between those from normal and contingent situations to derive charges. Sensitivity analysis is introduced to reduce the calculation burden in determining components' flowincrements due to injections. The improved approach is finally testified and compared with the original model on a threebusbar system and a practical system.
LanguageEnglish
Pages344-352
Number of pages9
JournalIEEE Transactions on Power Systems
Volume27
Issue number1
DOIs
StatusPublished - Feb 2012

Fingerprint

Electric power distribution
Costs
Network security
Sensitivity analysis
Reinforcement
Electric potential

Keywords

  • long-run increment cost
  • network contingency
  • security
  • network pricing

Cite this

Enhanced long-run incremental cost pricing considering the impact of network contingencies. / Gu, Chenghong; Li, Furong; He, Y.

In: IEEE Transactions on Power Systems, Vol. 27, No. 1, 02.2012, p. 344-352.

Research output: Contribution to journalArticle

@article{7a99ab133f9048b2a3012a202e20d337,
title = "Enhanced long-run incremental cost pricing considering the impact of network contingencies",
abstract = "This paper improves the existing long-run incremental cost (LRIC) pricing which forms the basis for one of the two common charging methodologies that are to be adopted by the U.K.'s seven distribution network operators for charging customers connected at extra-high voltage (EHV) distribution networks from April 2012. The original model is expected to respect network security while evaluating charges based on the extent of the use of the network, which it achieves by reshaping components' capacity with their contingency factors into maximum available capacity. It then identifies the impact of a nodal injection on each component under normal conditions within the threshold of the maximum available capacity. The problem with the LRIC is that it assumes that the impact from a nodal injection is the same under both normal and contingent states, thus underestimating its impact under contingencies. In this paper, the original LRIC model is improved by considering the respective impacts from users under both normal and contingent conditions. The improved model runs incremental contingency flow analysis to determine how they affect components' flows under contingencies. In order to illustrate the differences in the reinforcement horizons, a comparison of the original and enhanced approaches is carried out on three basic distribution networks: single-branch, parallel-branch, and meshed. The new approach chooses the smaller horizons between those from normal and contingent situations to derive charges. Sensitivity analysis is introduced to reduce the calculation burden in determining components' flowincrements due to injections. The improved approach is finally testified and compared with the original model on a threebusbar system and a practical system.",
keywords = "long-run increment cost, network contingency, security, network pricing",
author = "Chenghong Gu and Furong Li and Y He",
year = "2012",
month = "2",
doi = "10.1109/tpwrs.2011.2159744",
language = "English",
volume = "27",
pages = "344--352",
journal = "IEEE Transactions on Power Systems",
issn = "0885-8950",
publisher = "IEEE",
number = "1",

}

TY - JOUR

T1 - Enhanced long-run incremental cost pricing considering the impact of network contingencies

AU - Gu,Chenghong

AU - Li,Furong

AU - He,Y

PY - 2012/2

Y1 - 2012/2

N2 - This paper improves the existing long-run incremental cost (LRIC) pricing which forms the basis for one of the two common charging methodologies that are to be adopted by the U.K.'s seven distribution network operators for charging customers connected at extra-high voltage (EHV) distribution networks from April 2012. The original model is expected to respect network security while evaluating charges based on the extent of the use of the network, which it achieves by reshaping components' capacity with their contingency factors into maximum available capacity. It then identifies the impact of a nodal injection on each component under normal conditions within the threshold of the maximum available capacity. The problem with the LRIC is that it assumes that the impact from a nodal injection is the same under both normal and contingent states, thus underestimating its impact under contingencies. In this paper, the original LRIC model is improved by considering the respective impacts from users under both normal and contingent conditions. The improved model runs incremental contingency flow analysis to determine how they affect components' flows under contingencies. In order to illustrate the differences in the reinforcement horizons, a comparison of the original and enhanced approaches is carried out on three basic distribution networks: single-branch, parallel-branch, and meshed. The new approach chooses the smaller horizons between those from normal and contingent situations to derive charges. Sensitivity analysis is introduced to reduce the calculation burden in determining components' flowincrements due to injections. The improved approach is finally testified and compared with the original model on a threebusbar system and a practical system.

AB - This paper improves the existing long-run incremental cost (LRIC) pricing which forms the basis for one of the two common charging methodologies that are to be adopted by the U.K.'s seven distribution network operators for charging customers connected at extra-high voltage (EHV) distribution networks from April 2012. The original model is expected to respect network security while evaluating charges based on the extent of the use of the network, which it achieves by reshaping components' capacity with their contingency factors into maximum available capacity. It then identifies the impact of a nodal injection on each component under normal conditions within the threshold of the maximum available capacity. The problem with the LRIC is that it assumes that the impact from a nodal injection is the same under both normal and contingent states, thus underestimating its impact under contingencies. In this paper, the original LRIC model is improved by considering the respective impacts from users under both normal and contingent conditions. The improved model runs incremental contingency flow analysis to determine how they affect components' flows under contingencies. In order to illustrate the differences in the reinforcement horizons, a comparison of the original and enhanced approaches is carried out on three basic distribution networks: single-branch, parallel-branch, and meshed. The new approach chooses the smaller horizons between those from normal and contingent situations to derive charges. Sensitivity analysis is introduced to reduce the calculation burden in determining components' flowincrements due to injections. The improved approach is finally testified and compared with the original model on a threebusbar system and a practical system.

KW - long-run increment cost

KW - network contingency

KW - security

KW - network pricing

UR - http://www.scopus.com/inward/record.url?scp=84856294290&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1109/tpwrs.2011.2159744

U2 - 10.1109/tpwrs.2011.2159744

DO - 10.1109/tpwrs.2011.2159744

M3 - Article

VL - 27

SP - 344

EP - 352

JO - IEEE Transactions on Power Systems

T2 - IEEE Transactions on Power Systems

JF - IEEE Transactions on Power Systems

SN - 0885-8950

IS - 1

ER -