田湾核电站线功率密度保护参数计算

发布时间：2019-05-10 02:55

【摘要】：田湾核电站(TNPS)堆内核测量系统的54个中子温度测量通道分成4组,每组通道将自给能探测器电流转换为功率并通过扩展计算获得全堆芯的功率分布。电流转换为功率的系数等参数由堆内测量系统上层服务器计算获得并传递给下层服务器。每个燃料组件最大线功率密度由周边影响区域内的4个中子温度测量通道计算的线功率密度值加权平均得到,权重系数与自给能探测器到周边影响区域内燃料组件的距离有关。本文阐述这种由自给能探测器电流计算线功率密度保护参数的方法。该方法简易、响应及时,且误差小于5.7%,已成功应用在田湾核电站运行机组的实时在线保护中。
[Abstract]:The 54 neutron temperature measurement channels of the (TNPS) core measurement system of Tianwan Nuclear Power Station are divided into 4 groups, each group of channels converts the self-sufficient detector current into power and obtains the power distribution of the whole core by expansion calculation. The parameters such as the coefficient of current conversion to power are calculated by the upper server of the in-reactor measurement system and transferred to the lower server. The maximum linear power density of each fuel assembly is obtained by the weighted average of the linear power density calculated by the four neutron temperature measurement channels in the surrounding affected area, and the weight coefficient is related to the distance between the self-contained energy detector and the fuel assembly in the surrounding affected area. In this paper, the method of calculating linear power density protection parameters from the current of self-sufficient energy detector is described. This method is simple, timely and the error is less than 5.7%. It has been successfully applied to the real-time on-line protection of operating units in Tianwan Nuclear Power Station.
【作者单位】：江苏核电有限公司;
【基金】：国家国际科技合作专项资助项目(2011DFR60730)
【分类号】：TM623

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