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Abstract
The ultra-high voltage direct current (UHVDC) converter station is the core of the UHVDC project to realize the mutual conversion of alternating current (AC) and direct current (DC). Its operational reliability directly affects the safety of personnel and equipment and the stable operation of the grid. The firestop system is key part of the protective system in converter station, and it faces the threat of fire and explosion of converter transformer. In this paper, in order to analyze the shortcomings of the existing firestop system of valve halls, numerical models for fire and blast resistance analysis of typical firestop system are established. For a typical UHVDC converter station, the temperature distribution under hydrocarbon heating curve and dynamic response under different blast loads are analyzed by using the established numerical model. And the results show that the existing firestop system has good heat insulation performance, while the blast resistance cannot meet the demand.
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Details
1 Sichuan Fire Research Institute of Ministry of Emergency Management, Chengdu, Sichuan, 610036, China
2 State Grid Anhui Electric Power Research Institute, Hefei, 230022, China
3 Global Energy Interconnection Research Institute Co., Ltd, Beijing, 102211, China