We evaluate the hydrogen depletion ability of the hydrogen depletion system for Chinese Pressurized Reactor 1000(CPR1000), which has been applied in nuclear power plants with pressurized water reactors;moreover, we in...We evaluate the hydrogen depletion ability of the hydrogen depletion system for Chinese Pressurized Reactor 1000(CPR1000), which has been applied in nuclear power plants with pressurized water reactors;moreover, we introduce a new device that can continuously monitor hydrogen concentration inside the CPR1000 containment building. Experimental studies show that a moveable hydrogen autocatalytic recombiner alone can sufficiently deplete hydrogen under the condition of a design-basis accident, and 33 passive autocatalytic recombiners placed in the areas of high hydrogen concentration satisfy the hydrogen depletion requirements under the condition of a beyond-design-basis accident.Meanwhile, the hydrogen concentration monitoring system is designed and installed based on the approach of detecting the temperature increase caused by the catalytic reaction of hydrogen. In conclusion, the hydrogen depletion capacity of the CPR1000 meets the requirements, and the system's safety can be enhanced by the improved hydrogen concentration monitoring system.展开更多
随着新能源和柔性输电技术的发展,电力系统对高压自愈式电容器需求量越来越大。理论上,自愈式电容器不可能完全避免自愈失效的发生,自愈失效会逐渐发展为着火、爆炸等严重事故,所以必须在自愈失效后尽快将其从电源切除。没有可靠的自愈...随着新能源和柔性输电技术的发展,电力系统对高压自愈式电容器需求量越来越大。理论上,自愈式电容器不可能完全避免自愈失效的发生,自愈失效会逐渐发展为着火、爆炸等严重事故,所以必须在自愈失效后尽快将其从电源切除。没有可靠的自愈失效保护措施是高压自愈式电容器一直未能在电力系统推广使用的重要原因之一。本文通过自愈失效模拟试验,得到自愈失效时电容器元件的产气量和气体成分特性,提出1种基于氢气含量变化的自愈失效保护方法,开发了相应的监测电路,并将监测电路安装在电容器单元内部进行模拟试验。试验结果证明:自愈失效后,氢气含量监测电路可以输出15 m V左右的信号,可用于触发保护装置,且灵敏度高于压力保护装置。展开更多
基金supported by the Priority Academic Program Development of Jiangsu Higher Education Institution
文摘We evaluate the hydrogen depletion ability of the hydrogen depletion system for Chinese Pressurized Reactor 1000(CPR1000), which has been applied in nuclear power plants with pressurized water reactors;moreover, we introduce a new device that can continuously monitor hydrogen concentration inside the CPR1000 containment building. Experimental studies show that a moveable hydrogen autocatalytic recombiner alone can sufficiently deplete hydrogen under the condition of a design-basis accident, and 33 passive autocatalytic recombiners placed in the areas of high hydrogen concentration satisfy the hydrogen depletion requirements under the condition of a beyond-design-basis accident.Meanwhile, the hydrogen concentration monitoring system is designed and installed based on the approach of detecting the temperature increase caused by the catalytic reaction of hydrogen. In conclusion, the hydrogen depletion capacity of the CPR1000 meets the requirements, and the system's safety can be enhanced by the improved hydrogen concentration monitoring system.
文摘随着新能源和柔性输电技术的发展,电力系统对高压自愈式电容器需求量越来越大。理论上,自愈式电容器不可能完全避免自愈失效的发生,自愈失效会逐渐发展为着火、爆炸等严重事故,所以必须在自愈失效后尽快将其从电源切除。没有可靠的自愈失效保护措施是高压自愈式电容器一直未能在电力系统推广使用的重要原因之一。本文通过自愈失效模拟试验,得到自愈失效时电容器元件的产气量和气体成分特性,提出1种基于氢气含量变化的自愈失效保护方法,开发了相应的监测电路,并将监测电路安装在电容器单元内部进行模拟试验。试验结果证明:自愈失效后,氢气含量监测电路可以输出15 m V左右的信号,可用于触发保护装置,且灵敏度高于压力保护装置。
