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ERCOT has moved from a zonal market to an advanced nodal market since December 2010. In ERCOT, combined cycle trains (CCT) contribute a significant share of its total installed capacity. Therefore, how to accurately and efficiently model the CCT is one of the key factors for a successful EROCT nodal market. In order to facilitate market operations and ensure the system reliability, the ERCOT nodal...
The impact of wind power generation on the reserve levels has been studied in this paper through the simulation of a one-year daily unit commitment schedule for a benchmark power system. The case study shows that under the hybrid “N-1” plus “ 3σ ” security criterion, there exists a complex relationship among reserve levels, wind penetration and the relative size the conventional units. When such units...
ERCOT is transitioning from a current zonal market to a newly redesigned nodal market. In the new ERCOT nodal wholesale market, a Reliability Unit Commitment (RUC) process is designed and implemented to ensure transmission system reliability and security. The main objective of RUC is to ensure that enough resource capacity, in addition to ancillary service capacity, is committed in the right locations...
As an independent system operator (ISO), Electric Reliability Council of Texas (ERCOT) is responsible for the security and reliability of the ERCOT grid. Participation by load in the restructured ERCOT market is viewed as a means of enhancing competition in those markets by mitigating unwarranted price spikes. Customers with interruptible loads that can meet various performance requirements can qualify...
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