[에너지시스템신뢰도해석] 계통 신뢰도 해석 및 개선방안 제시 - 2

2021.11.09 - [Energy/Others] - [에너지시스템신뢰도해석] 계통 신뢰도 해석 및 개선방안 제시 - 1

[에너지시스템신뢰도해석] 계통 신뢰도 해석 및 개선방안 제시 - 1

10모선 계통의 시스템 신뢰도 해석 수행 및 신뢰도 개선방안 제시

10 Bus System

 

 

10 Bus Contingency Analysis in Power world

Step 1. Design a total of 16 scenarios by setting up n-1 contingency analysis.

Step 2. Via these scenarios, find the most problematic transmission line and strength the transmission network by adding line, conducting load curtailment, ramping up/down generator. (One new line added)

Step 3. After Step 2, Design a total of 17 scenarios by setting up another n-1 contingency analysis for new systems.

Step 4. Same as Step 2, strength system reliability through line network reinforcement for problematic scenarios.

Step 5. After Step 4, Design a total of 18 scenarios by setting up n-1 contingency analysis for newly strengthened system. In this case, there is no more line founded which has any issue.

 

Below scenarios show which violation it has, what action to improve system reliability has been done and what occurred after action had been taken.

In the end, the system can be operated stably by adding two new additional transmission lines and increasing the load limit of one line.

 

 

Scenario 8. Open Line Three 138.0 (3) to Four 138.0 (4)
Violation : Overloaded transmission line between two to five (101.18%).

Action to improve system reliability : Ramping up the generator at 7 up to 200MW.
What happend? Overloaded transmission line became under 100 %.

 

Scenario 9. Open Line Four 138.0 (4) to Five 138.0 (5)
Violation : Overloaded transmission line between two to five (113.37%).

Action to improve system reliability : Load curtailment at bus five to 100MW.
What happend? Overloaded transmission line got to be normal (86.9%).

 

Scenario 10. Open Line Five 138.0 (5) to Seven 138.0 (7)
Violation : Overloaded transmission line between two to five (113.37%).

Action to improve system reliability : Strenthen the transmission network by putting new line in service between bus two and bus five.
What happend? Two lines shared the load and returned to the normal (92.4% at each line).

 

320x100

 

Scenario 11. Open Line Six 138.0 (6) to Seven 138.0 (7)
Violation : Overloaded transmission line between two to five (113.37%).

Action to improve system reliability : Strengthen the transmission network by putting new line in service beween bus two and bus five.
What happend? Newly added lines cleared up the congestion. (69% at each line).

Scenario 12. Open Line Six 138.0 (6) to Eight 138.0 (8)
Violation : Two overloaded transmission line. one is for bus one to two (110.70%) and the other one is for bus one to eight (133.66%). In additional, there is highly likely to get overloaded line between bus two to five (98.7%).

Action to improve system reliability : Strengthen the transmission network by putting three line in service, one to eight, one to tow and two to five. 
What happend? Newly added lines cleared up the congestion.

 

Scenario 13. Open Line Six 138.0 (6) to Ten 138.0 (10)
Violation : None, No overloaded line observed.

Action to improve system reliability : No action needed.