Transmission Expansion Planning in Deregulated Power ... - tuprints

4 Market Based Criteria 44
cost. On the other word, it shows how much competition is encouraged per unit of
transmission cost.
• Decrease in annual load payments divided by annual transmission cost:
The annual load payment during the peak load of planning horizon after adding plan k is
given by:
with:
k
TPeak
k
tlp
ANLP = µ
(4.25)
k
ANLP annual load payment during the peak load of planning horizon after adding
plan k in $
Decrease in annual load payment per unit of annual transmission cost of plan k is equal to:
with:
k
FANLP 0
k
ANLP − ANLP
= k
ANIC − DANOC
k
(4.26)
k
F ANLP decrease in annual load payment per unit of annual transmission cost of plan k
This criterion shows how much annual load payments deceases per unit of transmission cost.
However, this criterion does not consider competition among customers.
4.4 Case Study
Consider the 8-bus network of section 3.3, which is redrawn in figure 4.5. Network engineers
suggest the following plans for transmission expansion:
Plan 1: installing a line between buses 1 and 4
Plan 2: installing a line between buses 2 and 4
Plan 3: installing a line between buses 5 and 4
Plan 4: installing a line between buses 2 and 3
Plan 5: installing a line between buses 5 and 3
In order to select the plan which encourages competition at the most, each plan is added to the
network and market based criteria are computed for each plan. Due to the lack of data about
transmission cost of the suggested expansion plans, transmission cost is ignored in this
k
k
example ( σ is used as planning criterion instead of F
µ
σ and so on).
µ
lmp
lmp