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探讨大型压水堆核电机组参与电网中间负荷调峰 被引量:11

Large-scale PWR Power Plants Participating in Peak-load Regulation of Grid Middle Load
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摘要 针对未来我国大型核电装机比重在区域电网日益增长的趋势,介绍了我国与国外大容量压水堆核电机组参与电网调峰的现状,分析了它们参与中间负荷调峰的必要性;通过分析商用压水堆设计特性、核汽轮机工作特性指出了机组进行日中间负荷调峰的可行性,推荐了日负荷跟踪出力曲线;指出压水堆在局部功率峰、慢速调节硼酸浓度、氙钐等毒物的瞬态、堆芯寿期末的碘坑、燃料芯块与包壳的相互作用等方面,制约着机组调峰的安全性和灵活性,在此基础上深入探讨机组适应日负荷跟踪调峰运行需具备的技术条件;以大亚湾M310型机组为例,通过分析其负荷变动时稳态和瞬态下主系统和设备的工况变化,指出调峰运行对电站核安全、可靠性的负面影响有限,对经济性的降低较明显;以第三代先进压水堆为例,提出了机组适应调峰运行需努力的技术方向。 Due to the tendency that large-scale nuclear power plants plays an increasing important role in grids of China, the condition of large-scale pressurized water reactors (PWRs) participating in peak-load regulation of grid is reviewed. The feasibility of unit peak-load regulation is proved through the performance analysis of commercial PWRs and nuclear turbines. A typical daily power curve for units to obey is recommended. It is concluded that the partial power peak, modulation of boron concentration, transformation of neutron poison, iodine-pit at the end of core life and pellets cladding interaction restrict the safety and flexibility of peak-load regulation. Some necessary techniques for units peak-load regulation are discussed. According to units of Daya Bay, by analyzing the working conditions of equipment in steady or transient conditions at different power levels, a conclusion is drawn that daily load-following has limited impact on nuclear safety and reliability, but has obvious influence on power economy. The direction of evolution for PWR with peak-load regulation is proposed by taking the third generation of advanced PWR as an example.
作者 马习朋 Ma Xipeng (Shandong Nuclear Power Corporation, Yantai 264000, China)
出处 《现代电力》 2007年第4期 28-33,共6页 Modern Electric Power
关键词 压水堆 核电机组 调峰 可行性 安全 影响 PWR nuclear power unit peak-load regulation feasibility safety influence
作者简介 马习朋(1975-),男,工程师,电厂热能动力工程专业学士,河南新乡电厂担任值长四年,现在山东核电有限公司设计管理部工作。
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