Transmission Expansion Planning in Deregulated Power ... - tuprints

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Transmission Expansion Planning in Deregulated Power ... - tuprints

7 Stakeholders’ Desires 95

Table 7.2- Importance weights of stakeholders in decision making

Power Demand System Network

Stakeholders

Producers Customers Operator Owners Regulator

Weight of importance L H L M M

Table 7.3- Importance degrees of stakeholders’ desires from viewpoint of stakeholders

Network Environmental

Competition Reliability Flexibility Charge Impacts

Power Producers VI I PI PI U

Demand Customers VI VI I I U

System operator LI VI VI LI U

Network Owners U PI LI VI LI

Regulator. VI VI I I VI

7.4.1.2 Appropriateness Degrees of Expansion Plans Versus Stakeholders’ Desires

Suppose

k

C i for i=1, .., 5 is the criterion which is used for measuring competition (i=1),

reliability (i=2), operation flexibility (i=3), network charge (i=4), and environmental impacts

(i=5) of plan k. Smaller values of all these criteria indicate better conditions. Hence, inverse of

these criteria are used to measure the appropriateness degrees of expansion plans:

A = 1/

C for i=1, …, Nsd (7.1)

k

i

with:

k

i

k

A i appropriateness degree of plan k versus criterion i

Nsd number of stakeholders’ desires

For aggregating the appropriateness degrees of expansion plans versus different decision

criteria, the appropriateness degrees must be comparable versus different decision criteria.

Therefore,

k

A i is normalized on its maximum value over different expansion plans.

k k

k

N = A / max(

A ) for i=1, 2, …, Nsd (7.2)

with:

i

i

k

i

k

N i normalized appropriateness degree of plan k versus decision criterion i

7.4.1.3 Fuzzy Appropriateness Index

Let Xj∈X is the importance weight of stakeholder j in decision making and Yij is the

importance degree of desire i from the viewpoint of stakeholder j. The importance degree of

desire i from the viewpoint of transmission planners is equal to the weighted mean of Yij i.e.:

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