1 100 k V滤波器用柱式断路器作为电力制造行业推出的新型高电压设备,是特高压电网中重要的控制和保护设备,其开合过程中产生的电弧会对灭弧室中的触头及喷口造成烧蚀,随着开合次数增加烧蚀程度会不断加重,造成断路器开断能力下降,因此...1 100 k V滤波器用柱式断路器作为电力制造行业推出的新型高电压设备,是特高压电网中重要的控制和保护设备,其开合过程中产生的电弧会对灭弧室中的触头及喷口造成烧蚀,随着开合次数增加烧蚀程度会不断加重,造成断路器开断能力下降,因此需要找到有效的方法,来评估频繁开合操作对灭弧室运行状态造成的影响。文中通过对某型1 100 k V滤波器用柱式断路器开展C2级试验,对试验后设备内部SF_6分解产物进行检测、化学机理分析及设备解体检查,提出了通过检测CF_4体积分数来评估1 100 k V滤波器用柱式断路器开合容性电流操作对灭弧室工况造成影响的方法,该方法可为其他SF_6断路器的维护检修提供参考。展开更多
An analysis of historical data of Fitzroy River, which lies in the east coast of Australia, reveals that there is an increasing trend in extreme floods and droughts apparently attributable to increased variability of ...An analysis of historical data of Fitzroy River, which lies in the east coast of Australia, reveals that there is an increasing trend in extreme floods and droughts apparently attributable to increased variability of blue and green waters which could be due to climate change. In order to get a better understanding of the impacts of climate change on the water resources of the study area for near future as well as distant future, SWAT （soil and water assessment tool） model was applied. The model is first tested for its suitability in capturing the basin characteristics with available data, and then, forecasts from six GCMs （general circulation model） with about half-a-century lead time to 2046-2064 and about one-century lead time to 2080-2100 are incorporated to evaluate the impacts of climate change under three marker emission scenarios： A2, A1B and B 1. The results showed worsening water resources regime into the future.展开更多
文摘1 100 k V滤波器用柱式断路器作为电力制造行业推出的新型高电压设备,是特高压电网中重要的控制和保护设备,其开合过程中产生的电弧会对灭弧室中的触头及喷口造成烧蚀,随着开合次数增加烧蚀程度会不断加重,造成断路器开断能力下降,因此需要找到有效的方法,来评估频繁开合操作对灭弧室运行状态造成的影响。文中通过对某型1 100 k V滤波器用柱式断路器开展C2级试验,对试验后设备内部SF_6分解产物进行检测、化学机理分析及设备解体检查,提出了通过检测CF_4体积分数来评估1 100 k V滤波器用柱式断路器开合容性电流操作对灭弧室工况造成影响的方法,该方法可为其他SF_6断路器的维护检修提供参考。
文摘An analysis of historical data of Fitzroy River, which lies in the east coast of Australia, reveals that there is an increasing trend in extreme floods and droughts apparently attributable to increased variability of blue and green waters which could be due to climate change. In order to get a better understanding of the impacts of climate change on the water resources of the study area for near future as well as distant future, SWAT （soil and water assessment tool） model was applied. The model is first tested for its suitability in capturing the basin characteristics with available data, and then, forecasts from six GCMs （general circulation model） with about half-a-century lead time to 2046-2064 and about one-century lead time to 2080-2100 are incorporated to evaluate the impacts of climate change under three marker emission scenarios： A2, A1B and B 1. The results showed worsening water resources regime into the future.
