| 引用本文: | 王 梦,丁 剑,吴国旸,宋云亭,任率兵,杨晓东,林 毅,胡臻达.考虑核电接入的大电网严重故障下孤网高频问题及协调控制措施[J].电力自动化设备,2015,35(12): |
| WANG Meng,DING Jian,WU Guoyang,SONG Yunting,REN Shuaibing,YANG Xiaodong,LIN Yi,HU Zhenda.High-frequency problem and corresponding coordinative control of islanded grid with nuclear units in large-scale power grid with serious fault[J].Electric Power Automation Equipment,2015,35(12): |
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| 摘要: |
| 针对含核电机组的孤网高频问题， 提出了核电机组与常规机组涉频保护间的协调控制策略。基于PSD-FDS全过程动态仿真程序中的压水堆核电模型以及超速保护控制（OPC）模型，研究了严重连锁故障下，核电机组与电网的动态特性，着重分析了机组超速保护、高频保护与电网高频切机的动作特性、相互影响以及协调配合情况，并提出了改进的协调控制策略。结合实际电网算例，验证了所提出的协调控制策略，为核电机组涉频保护定值、机网协调优化及所接入电网的安全稳定运行等提供了参考。 |
| 关键词: 核能 压水堆核电机组 孤网运行 高频保护 超速保护 协调策略 |
| DOI： |
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| 基金项目:国家电网公司大电网重大专项资助项目课题（SGCC-MPLG019-2012） |
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| High-frequency problem and corresponding coordinative control of islanded grid with nuclear units in large-scale power grid with serious fault |
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WANG Meng1, DING Jian2, WU Guoyang2, SONG Yunting2, REN Shuaibing1, YANG Xiaodong3, LIN Yi3, HU Zhenda3
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1.Institute of Electrical and Electronic Engineering，North China Electric Power University，Beijing 102206，China;2.China Electric Power Research Institute，Beijing 100192，China;3.State Grid Fujian Electric Power Co.，Ltd. Economic and Technology Institute，Fuzhou 350012，China
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| Abstract: |
| Aiming at the high-frequency problem of islanded grid with nuclear units，a strategy of coordinative control between the frequency-related protection of nuclear and conventional units is proposed. Based on the models of PSD-FDS for the pressurized water reactor nuclear power plant and the OPC（Over-speed Protection Controller） model，the dynamic performances of nuclear power unit and power grid in the condition of serious cascading failures are studied. The action performances of generator over-speed protection，over-frequency protection and grid over-frequency generator-tripping device，as well as their coordination，are emphasized. An improved strategy of coordinative control is proposed，which is verified with an actual power grid and can be used as a reference for the protective setting configuration，unit-grid coordination optimization and stable operation of grid with nuclear units. |
| Key words: nuclear energy pressurized water reactor nuclear power plant islanding operation abnormal frequency protection over-speed protection coordination method |
