A potential energy framework for assessment of grid vulnerability was presented.In the framework,the branch potential energy function model was constructed.Two indexes,current vulnerability and forecasting vulnerabili...A potential energy framework for assessment of grid vulnerability was presented.In the framework,the branch potential energy function model was constructed.Two indexes,current vulnerability and forecasting vulnerability,were calculated.The current vulnerability was used to identify the current vulnerable area through calculating the distance between the current transmitted power and initial transmitted power;and the forecast vulnerability under variation of power injection was used to predict the vulnerable area of next step and verify the current vulnerable area.Numerical simulation was performed under variant operating conditions with IEEE-30 bus system,which shows that almost area of 90% overlaps between current vulnerable area and forecasting vulnerable area,the overlapped area is termed as inherent vulnerable area of grid.When considering N-1 contingency,the assessment results of this method proposed agree with those of optimal power flow.When considering N-2 contingency,optimal power flow fails to obtain correct results,while the method based on energy framework gives reliable results.展开更多
目的探讨小睑裂综合征(BPES)遗传学发病机制,确定BPES家系临床表型,检测FOXL2基因突变位点。方法收集并追溯调查BPES大家系全体家系成员,对其进行全面体格检查及眼部专科检查;对已收集到的BPES家系中全部患者按照眼科分型标准进行确诊...目的探讨小睑裂综合征(BPES)遗传学发病机制,确定BPES家系临床表型,检测FOXL2基因突变位点。方法收集并追溯调查BPES大家系全体家系成员,对其进行全面体格检查及眼部专科检查;对已收集到的BPES家系中全部患者按照眼科分型标准进行确诊、分型,即遗传学的表型确定;所有现存家系成员性激素水平及卵巢功能检测(女性),女性患者行腹部B超检查,BEPS伴卵巢早衰(POF)患者行人体绒膜促性腺激素(HCG)兴奋试验。全体家系成员取外周血5 m L,常规提取DNA,纯化后的PCR产物送测序。结果该家系共24人,现存17人,其中BPES患者7例,现存6例BPES患者中,女性患者均存在生殖异常,为BEPSⅠ型,进一步完善该家系全部成员的体格检查及女性患者卵巢功能检查、人绒毛膜促性腺激素兴奋试验、血清学检查结果,支持POF的临床诊断。基因测序检测到FOXL2基因:C.429C>A(提前的中止密码)。结论系谱分析表明该家系遗传方式为常染色体显性遗传,常染色体显性BPES存在遗传异质性,同一家系中不同个体间也有不同;基因测序检测到的FOXL2基因:C.429C>A(提前的中止密码)突变为新的突变位点。展开更多
基金Project(51007006) supported by the National Natural Science Foundation of ChinaProject(20090185120023) supported by the Ph.D Programs Foundation for New Teacher of Ministry of Education of China
文摘A potential energy framework for assessment of grid vulnerability was presented.In the framework,the branch potential energy function model was constructed.Two indexes,current vulnerability and forecasting vulnerability,were calculated.The current vulnerability was used to identify the current vulnerable area through calculating the distance between the current transmitted power and initial transmitted power;and the forecast vulnerability under variation of power injection was used to predict the vulnerable area of next step and verify the current vulnerable area.Numerical simulation was performed under variant operating conditions with IEEE-30 bus system,which shows that almost area of 90% overlaps between current vulnerable area and forecasting vulnerable area,the overlapped area is termed as inherent vulnerable area of grid.When considering N-1 contingency,the assessment results of this method proposed agree with those of optimal power flow.When considering N-2 contingency,optimal power flow fails to obtain correct results,while the method based on energy framework gives reliable results.
文摘目的探讨小睑裂综合征(BPES)遗传学发病机制,确定BPES家系临床表型,检测FOXL2基因突变位点。方法收集并追溯调查BPES大家系全体家系成员,对其进行全面体格检查及眼部专科检查;对已收集到的BPES家系中全部患者按照眼科分型标准进行确诊、分型,即遗传学的表型确定;所有现存家系成员性激素水平及卵巢功能检测(女性),女性患者行腹部B超检查,BEPS伴卵巢早衰(POF)患者行人体绒膜促性腺激素(HCG)兴奋试验。全体家系成员取外周血5 m L,常规提取DNA,纯化后的PCR产物送测序。结果该家系共24人,现存17人,其中BPES患者7例,现存6例BPES患者中,女性患者均存在生殖异常,为BEPSⅠ型,进一步完善该家系全部成员的体格检查及女性患者卵巢功能检查、人绒毛膜促性腺激素兴奋试验、血清学检查结果,支持POF的临床诊断。基因测序检测到FOXL2基因:C.429C>A(提前的中止密码)。结论系谱分析表明该家系遗传方式为常染色体显性遗传,常染色体显性BPES存在遗传异质性,同一家系中不同个体间也有不同;基因测序检测到的FOXL2基因:C.429C>A(提前的中止密码)突变为新的突变位点。
