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2012年 第6卷 第2期

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《能源前沿（英文）》 >> 2012年 第6卷 第2期 doi: 10.1007/s11708-012-0174-1

Capacity limitation of nuclear units in grid based on analysis of frequency regulation

1. Institute of Turbomachinery, Xi’an Jiaotong University, Xi’an 710049, China; 2. ElectricβPowerβResearchβInstituteβofβGuangdong,βGuangzhouβ510080,βChina

发布日期： 2012-06-05
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The increasing capacity of nuclear units in power grid poses threat to system stability and security. Load disturbance may cause overspeed of the units and trigger the overspeed protection controller (OPC). Repeating actions of valves have a strong impact on the security of the equipment and may result in a collapse of the power system. Based on the analysis of frequency regulation, mathematic models for nuclear units in the grid are established in this paper to simulate the dynamic process when load disturbance occurs. The critical action of the OPC is proposed as the constraint of safe operation for the units. The relationship between different styles of frequency regulation and the allowable capacity of the nuclear units in the grid is discussed. This research can help to estimate the capacity limitation of nuclear units in the grid.

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