Cross-Regional Capacity Mechanism for Emergency Power Support in Extreme Weather Events
The increasing frequency of extreme weather events pose significant challenges to power system security.The expedited development of cross-regional capacity mechanisms has emerged as an effective strategy to improve the emergency response capabilities of power systems and ensure a reliable power supply.First,the effects of extreme weather on power systems are discussed,followed by a review of pilot implementations of capacity mechanisms across various locations in China.Based on cross-regional supply and demand theory,the architectural design of the cross-regional capacity mechanism is enhanced by incorporating three critical components:mechanism boundaries and regulations,lower and upper bounds of the capacity compensation price,and frameworks for responsibility and penalties.Subsequently,a novel cross-regional emergency power support capacity price model is developed,integrating the cost of the new entry(CONE)model,net income per unit of installed capacity,and the Value of Lost Load indicator.Furthermore,a scenario-based analysis is applied to determine the lower and upper bounds of the capacity compensation price for coal-fired power units participating in cross-regional emergency power support within the electricity market during extreme weather conditions.The results indicate that the lower bound of the capacity compensation price represents 30%-70%of the fixed costs of a coal power unit,aligning with the short-to medium-term tariff structure outlined by China's present coal power capacity mechanism(30%-50%).The upper bound of the capacity compensation price must be adjusted upward to signal a capacity shortage,as reflected in the increasing loss of load expectation(LOLE).Finally,targeted recommendations for optimizing capacity mechanisms are presented.
extreme weathercapacity mechanismcross-regional configurationcoal power unitselectricity market
国家科技期刊平台
NSTL
万方数据
