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Chernobyl at 40 years: Looking back at Nuclear News
Sunday, April 26, at 1:23 a.m. local time will mark 40 years since the most severe nuclear accident in history: the meltdown of Unit 4 at the Chernobyl nuclear power plant in Ukraine, then part of the Soviet Union.
In the ensuing four decades, countless books, documentaries, articles, and conference sessions have examined Chernobyl’s history and impact from various angles. There is a similar abundance of outlooks in the archives of Nuclear News, where hundreds of scientists, advocates, critics, and politicians have shared their thoughts on Chernobyl over the years. Today, we will take a look at some highlights from the pages of NN to see how the story of Chernobyl evolved over the decades.
Miao Liu, Zhe Dong (Tsinghua Univ)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1600-1609
With the formation and development of multi-area power system and the continuous increasing proportion of installed units, nuclear power plants (NPPs) are facing great pressure on multi-area interconnected power system regulation. The load following capability of generating units plays a crucial role in ensuring the operation safety and stability of both NPPs and power system. At present, advanced pressurized water reactor (PWR) has a certain capability of load following. Compared with traditional large single module PWR NPPs, multi module NPPs consisting of several small modular reactor (SMR) such as modular high temperature gas-cooled reactor (MHTGR), have remarkable differences in both process structure and operation characteristics, such as the sixmodular MHTGR plant HTR-PM600. To study and verify the feasibility and performance of HTRPM600 on regulating frequency and tie line power in multi-area interconnected power system, a dynamic modeling of multi-area interconnected power system is given firstly to simulate the power grid futures. Then a new control strategy is proposed on the existing unit coordinated control system. Finally, the numerical simulation is conducted and the results show that HTR-PM600 can control frequency and tie-line power well in the operation control of multi-area interconnected power system. At the same time, the operation indexes of HTR-PM600 plant also meet the requirements.
