Plasma Control Requirements for Commercial Fusion Power Plants: A Quantitative Scenario Analysis With a Dynamic Fusion Power Plant Model
Plasma Control Requirements for Commercial Fusion Power Plants: A Quantitative Scenario Analysis With a Dynamic Fusion Power Plant Model
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商业聚变发电厂的等离子体控制要求：动态聚变发电厂模型的定量情景分析
DOI：
10.1109/tps.2018.2794560
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发表时间：
2018
影响因子：
1.5
通讯作者：
Ryuta Kasada and Satoshi Konishi
中科院分区：
文献类型：
--
作者：
Shutaro Takeda;Shigeki Sakurai;Ryuta Kasada and Satoshi Konishi
利用Modelica语言建立了核聚变电站的动态仿真模型，为未来商用聚变电站对等离子体控制的要求提供了基础知识。聚变电站模型设计采用1,500 MW热力输出托卡马克反应堆，采用氦冷Li2TiO3固体增殖包层(冷却剂出口条件：8 Mpa和515.8°C)。设计了一台过热朗肯循环，在工作压力为20.5兆帕的条件下，获得了485.38兆瓦的电力输出。模拟了阶跃功率下降和单脉冲功率下降两种等离子体输出模式，以评估电厂的响应。聚变中子的突然阶跃下降导致包层温度和第一冷却剂温度立即下降。为避免温度急剧下降，提出了汽轮机旁路机构或冷却剂锅炉旁路机构的必要性。另一方面，由于对象响应的延迟，可以通过在几十秒内恢复等离子体输出来最小化电输出与稳态的偏差。基于这些发现，给出了一个新的图表，说明了未来商业聚变发电厂对等离子体控制的一个重要要求。
The authors constructed a dynamic simulation model of a nuclear fusion power plant on Modelica language to obtain fundamental knowledge on the plasma control requirements for the future commercial fusion power plants. The fusion power plant model was designed with a 1500-MW thermal output tokamak reactor with He-cooled Li2TiO3 solid breeder blanket (coolant outlet conditions: 8 MPa and 515.8 °C). A superheated Rankine cycle was designed to achieve the electrical output of 485.38 MW with the operating pressure of 20.5 MPa. Two plasma output patterns, a step decrease of power and a single pulse decrease of power, were simulated to assess the response of the power plant. A sudden step decrease in fusion neutron led to an immediate decrease in the blanket temperature and the first coolant temperature. In order to avoid the sharp temperature drop, a need for a turbine bypass mechanism or a He coolant boiler bypass mechanism was indicated. On the other hand, because of the delay in the plant responses, the deviation of the electrical output from steady state could be minimized by recovering the plasma output in few tens of seconds. Based on the findings, a new diagram was presented that illustrates an important plasma control requirements for future commercial fusion power plants.