| 引用本文: | 熊 莉,刘涤尘,赵 洁,周 玲,陈 琪,杜 治,雷庆生.大型核电站的建模及接入电网的相互影响[J].电力自动化设备,2011,31(5): |
| XIONG Li,LIU Dichen,ZHAO Jie,ZHOU Ling,CHEN Qi,DU Zhi,LEI Qingsheng.Large nuclear power plant modeling and grid-connection influence[J].Electric Power Automation Equipment,2011,31(5): |
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| 摘要: |
| 为了对大扰动下核电机组接入电网后的相互影响进行研究，基于能量定理和压水堆核电站的工作原理推导出其数学模型，并将大型压水堆核电站的一回路和二回路系统作为汽轮发电机的调速器建立了适用于研究电力系统在大扰动下的暂态和中期动态分析的核电机组的数学模型，在此基础上对大型压水堆核电站接入电网后的影响从潮流、短路电流的水平等方面进行了分析。并针对3组不同的故障模式对大型压水堆核电机组的特性进行了仿真研究。研究的结果表明：对于一般形态的故障在快速而正确切除的情况下，核电机组本身不需要采取特殊的措施。但是如果某些保护不正确动作，故障长期存在，则可能导致系统内机组失去同步，必须在机组内采取一些特殊的措施。 |
| 关键词: 核电站 数学模型 电网 影响 稳定 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（51077103） |
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| Large nuclear power plant modeling and grid-connection influence |
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XIONG Li1, LIU Dichen1, ZHAO Jie1, ZHOU Ling1, CHEN Qi1, DU Zhi2, LEI Qingsheng2
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1.Electrical Engineering School，Wuhan University，Wuhan 430072，China;2.Electric Power Research Institute of Hubei Province，Wuhan 430077，China
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| Abstract: |
| In order to investigate the interaction between nuclear power plant and power grid under serious disturbance，the mathematical model of nuclear power plant is deduced based on energy theorem and its working principle，which takes the primary loop & secondary loop system as the steam turbine governor for transient and mid-term dynamic analysis under serious disturbance of power grid. The influence of a pressurized water reactor plant incorporating into grid is analyzed from power flow and short circuit current. The characteristics of pressurized water reactor plant are simulated in three fault modes. Simulative results show that，it is not necessary to take special measures for normal faults which are removed rapidly and correctly；special measures have to be taken if the fault stays because of the incorrect protection operations，which may cause unit synchronization loss. |
| Key words: nuclear power plant mathematical model power grid influence stabilization |
