Scholarlink

The grid frequency is an important indicator for ensuring power quality. With the increase in the proportion of new energy power generation, the fluctuation of the grid load has risen, and the latest grid's requirement for the primary frequency modulation regulation of grid-connected plant has been raised to ± 6% full power (FP). However, the current primary frequency modulation regulation response amplitude of HPR1000 is ± 3%FP. HPR1000 adopts the MODE G control mode. In this mode, only the average temperature control rods of the reactor core are inserted into the core, and its maximum power regulation capacity is ± 3%FP. Due to the lack of a rapid means of positive power compensation, the plant cannot achieve a response of positive frequency regulation higher than + 3%FP. But for negative primary frequency modulation regulation, the HPR1000 can achieve power response by inserting power control rods. Therefore, HPR1000 nuclear power plant has the potential to improve negative primary frequency modulation. This paper conducts an impact analysis on the plant to expand the negative primary frequency modulation regulation capacity of HPR1000 from 3 to 6%FP, and carries out demonstrations in various aspects such as safety analysis, design transient analysis, fuel analysis, and chemical and volume control system analysis. The demonstration results show that it is feasible to upgrade the negative primary frequency modulation regulation capacity of HPR1000 nuclear power plant to –6%FP.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on the Influence of Primary Frequency Modulation Capacity Range Up to [–6%, + 3%] for Reactor Safety in HPR1000 Nuclear Power Plant

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Qiu-bai Li,
  • Chao-hao Shang,
  • Xin-jie Zhai,
  • Kun Xiong

摘要

The grid frequency is an important indicator for ensuring power quality. With the increase in the proportion of new energy power generation, the fluctuation of the grid load has risen, and the latest grid's requirement for the primary frequency modulation regulation of grid-connected plant has been raised to ± 6% full power (FP). However, the current primary frequency modulation regulation response amplitude of HPR1000 is ± 3%FP. HPR1000 adopts the MODE G control mode. In this mode, only the average temperature control rods of the reactor core are inserted into the core, and its maximum power regulation capacity is ± 3%FP. Due to the lack of a rapid means of positive power compensation, the plant cannot achieve a response of positive frequency regulation higher than + 3%FP. But for negative primary frequency modulation regulation, the HPR1000 can achieve power response by inserting power control rods. Therefore, HPR1000 nuclear power plant has the potential to improve negative primary frequency modulation. This paper conducts an impact analysis on the plant to expand the negative primary frequency modulation regulation capacity of HPR1000 from 3 to 6%FP, and carries out demonstrations in various aspects such as safety analysis, design transient analysis, fuel analysis, and chemical and volume control system analysis. The demonstration results show that it is feasible to upgrade the negative primary frequency modulation regulation capacity of HPR1000 nuclear power plant to –6%FP.