《防治煤与瓦斯突出细则》推荐的区域预测临界值指标分别为瓦斯压力0.74 MPa(相对)、瓦斯含量8 m 3/t,然而实际生产过程中,深部煤层经区域预测瓦斯压力小于0.74 MPa或者瓦斯含量小于8 m 3/t的煤层也曾多次发生突出。鉴于此,在考虑温度...《防治煤与瓦斯突出细则》推荐的区域预测临界值指标分别为瓦斯压力0.74 MPa(相对)、瓦斯含量8 m 3/t,然而实际生产过程中,深部煤层经区域预测瓦斯压力小于0.74 MPa或者瓦斯含量小于8 m 3/t的煤层也曾多次发生突出。鉴于此,在考虑温度和地应力对煤层瓦斯赋存影响的基础上,对区域预测瓦斯压力和含量临界值进行了修正,修正系数为0.75。研究表明,考虑地温和地应力的影响修正得到的区域预测指标临界值对深部煤层的防突工作具有一定指导意义。展开更多
The rising frequency of extreme disaster events seriously threatens the safe and secure operation of the regional integrated electricity-natural gas system(RIENGS).With the growing level of coupling between electric a...The rising frequency of extreme disaster events seriously threatens the safe and secure operation of the regional integrated electricity-natural gas system(RIENGS).With the growing level of coupling between electric and natural gas systems,it is critical to enhance the load restoration capability of both systems.This paper proposes a coordinated optimization strategy for resilience-enhanced RIENGS load restoration and repair scheduling and transforms it into a mixed integer second-order cone programming(MISOCP)model.The proposed model considers the distribution network reconfiguration and the coordinated repair strategy between the two systems,minimizing the total system load loss cost and repair time.In addition,a bi-directional gas flow model is used to describe the natural gas system,which can provide the RIENGS with more flexibility for load restoration during natural gas system failure.Finally,the effectiveness of the proposed approach is verified by conducting case studies on the test systems RIENGS E13-G7 and RIENGS E123-G20.展开更多
文摘《防治煤与瓦斯突出细则》推荐的区域预测临界值指标分别为瓦斯压力0.74 MPa(相对)、瓦斯含量8 m 3/t,然而实际生产过程中,深部煤层经区域预测瓦斯压力小于0.74 MPa或者瓦斯含量小于8 m 3/t的煤层也曾多次发生突出。鉴于此,在考虑温度和地应力对煤层瓦斯赋存影响的基础上,对区域预测瓦斯压力和含量临界值进行了修正,修正系数为0.75。研究表明,考虑地温和地应力的影响修正得到的区域预测指标临界值对深部煤层的防突工作具有一定指导意义。
基金funded by the Science and Technology Project of State Grid Jilin Electric Power Co.,Ltd.(Project Name:Research onDistributionNetworkResilience Assessment and Improvement Technology for Natural Disaster Areas).
文摘The rising frequency of extreme disaster events seriously threatens the safe and secure operation of the regional integrated electricity-natural gas system(RIENGS).With the growing level of coupling between electric and natural gas systems,it is critical to enhance the load restoration capability of both systems.This paper proposes a coordinated optimization strategy for resilience-enhanced RIENGS load restoration and repair scheduling and transforms it into a mixed integer second-order cone programming(MISOCP)model.The proposed model considers the distribution network reconfiguration and the coordinated repair strategy between the two systems,minimizing the total system load loss cost and repair time.In addition,a bi-directional gas flow model is used to describe the natural gas system,which can provide the RIENGS with more flexibility for load restoration during natural gas system failure.Finally,the effectiveness of the proposed approach is verified by conducting case studies on the test systems RIENGS E13-G7 and RIENGS E123-G20.
