The development of credit risk transfer market disperse the credit risk of banks, at the same time, also give a threat to the whole financial system with instability. This paper from the influence factors of financial...The development of credit risk transfer market disperse the credit risk of banks, at the same time, also give a threat to the whole financial system with instability. This paper from the influence factors of financial stability, explores how credit risk affecting the stability of financial system. Research found that the rating risk of credit risk transfer can cause default contagion in the financial markets.展开更多
An analytical approach for probabilistic evaluation of transient stability of a power system incorporating a wind farm is presented in this study. Based on the fact that the boundary of practical dynamic security regi...An analytical approach for probabilistic evaluation of transient stability of a power system incorporating a wind farm is presented in this study. Based on the fact that the boundary of practical dynamic security region(PDSR) of a power system with double fed induction generators(DFIG) can be approximated by one or few hyper-planes in nodal power injection space, transient stability criterion for given configurations of pre-fault, fault-on and post-fault of a power system is to be expressed by certain expressions of linear combination of nodal injection vector and the transient stability probability(TSP) is further obtained with a much more simplified expression than the complex integral. Furthermore, considering uncertainties of nodal injection power including wind power and load, TSP is calculated analytically by Cornish-Fisher expansion, which can provide reliable evaluation results with high accuracy and much less computing time compared with Monte Carlo simulation. TSP and its visualization can further help operators and planners be aware of the degree of stability or instability and find critical components to monitor and reinforce. Test results on the New England 10-generators and 39-buses power system show the method's effectiveness and significance for probabilistic security assessment.展开更多
文摘The development of credit risk transfer market disperse the credit risk of banks, at the same time, also give a threat to the whole financial system with instability. This paper from the influence factors of financial stability, explores how credit risk affecting the stability of financial system. Research found that the rating risk of credit risk transfer can cause default contagion in the financial markets.
基金supported by the National Basic Research Program of China("973"Project)(Grant No.2013CB228204)the National Natural Science Foundation of China(Grant No.51407126)Tianjin Natural Science Foundation(Grant No.15JCQNJC07000)
文摘An analytical approach for probabilistic evaluation of transient stability of a power system incorporating a wind farm is presented in this study. Based on the fact that the boundary of practical dynamic security region(PDSR) of a power system with double fed induction generators(DFIG) can be approximated by one or few hyper-planes in nodal power injection space, transient stability criterion for given configurations of pre-fault, fault-on and post-fault of a power system is to be expressed by certain expressions of linear combination of nodal injection vector and the transient stability probability(TSP) is further obtained with a much more simplified expression than the complex integral. Furthermore, considering uncertainties of nodal injection power including wind power and load, TSP is calculated analytically by Cornish-Fisher expansion, which can provide reliable evaluation results with high accuracy and much less computing time compared with Monte Carlo simulation. TSP and its visualization can further help operators and planners be aware of the degree of stability or instability and find critical components to monitor and reinforce. Test results on the New England 10-generators and 39-buses power system show the method's effectiveness and significance for probabilistic security assessment.
