Question $2[10$ degrees$]$:

A$.(4$ Degree$)$ Write brief comments about:

$1-$ The effects of network conjesion on electricity price at each bus.

$2-$ The preventive control actions to avoid power system instabilities.

$3-$ The methods of voltage and reactive power control.

B$.(6$ Mark$)$ The energy market has $3$ suppliers and $3$ consumers with energy bids as follows:

a$.$ Determine the market price, the quantity produced by each company and the revenue of each company for a constant load $800$ MW$.$

b$.$ Specify the MCP and the traded power when the consumers introduce offers to participate in the market.

c$.$ Specify the MCP and the traded power when the load is represented by its inverse demand curve as follows: $\backslash (\backslash$mathrm$\{$D$\}=800-3^\{*\}\backslash$mathrm$\{$MCP$\}\backslash ).$