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Seismic performance and restraint system of suspended 800 kV thyristor valve

机译：悬挂式800 kV晶闸管阀的抗震性能与抑制系统。

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摘要

Suspended thyristor valves are widely used in ultra high voltage (UHV) direct current transmission projects all over the world nowadays. However, the seismic performance of the 800 kV thyristor valve, which has longer hangers, larger air clearance requirement and is heavier than its lower voltage counterparts, has not been fully investigated. This study firstly established a finite element (FE) model of an 800 kV thyristor valve and its corresponding hall building to evaluate the seismic response of the valve. Subsequently, a restraint system consisting of rods, springs and viscous dampers was introduced to reduce the seismic response of the valve. Parametric analysis was carried out on a simplified model to determine the optimal design parameters of the restraint system. The FE model of the restrained valve, making use of the optimal parameters, was investigated. The results show that the system with the optimal parameters can effectively reduce the horizontal displacement of the valve. It is proposed to apply the restraint system to the valves, or other types of suspended equipment, to reduce the horizontal displacement and accordingly increase the seismic resiliency of this types of suspended equipment.
机译：如今，悬浮晶闸管阀广泛用于超高压（UHV）直流输电项目。但是，尚未充分研究800 kV晶闸管阀的抗震性能，该阀具有更长的吊架，更大的空气间隙要求并且比其较低电压的同类产品重。本研究首先建立了一个800 kV晶闸管阀及其相应的霍尔建筑物的有限元模型，以评估该阀的地震响应。随后，引入了一个由杆，弹簧和粘性阻尼器组成的约束系统，以减少阀门的地震响应。对简化模型进行参数分析，以确定约束系统的最佳设计参数。利用最佳参数对节流阀的有限元模型进行了研究。结果表明，具有最佳参数的系统可以有效减小阀门的水平位移。建议将约束系统应用于阀门或其他类型的悬挂设备，以减少水平位移并相应地增加这种类型的悬挂设备的抗震能力。

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