高地震烈度地区悬吊式换流阀抗震性能及限位措施研究

发布时间：2018-03-02 22:03

本文选题：悬吊式换流阀　切入点：抗震安全性　出处：《中国水利水电科学研究院学报》2017年05期 　论文类型：期刊论文

【摘要】：悬吊式换流阀在我国西南高烈度地震区特高压输电工程中得到了广泛的应用,其抗震性能研究的重要性不言而喻。本文以滇西北至广东特高压直流输变电工程项目为背景,建立了换流阀-阀厅整体结构的三维模型,利用模态分析和时程积分法对送端换流站的悬吊换流阀的抗震性能和限位措施进行了研究。考虑自重效应的模态分析发现,换流阀-阀厅系统的低阶振型较好地避开了地震和厂房的峰值频率。在基于逐步积分法的动力时程分析中分别考虑了3条地震波(2条自然波和1条人工波)的作用,结果表明,悬吊式换流阀具有低频、大位移、低应力的动力响应特点,因而具有优越的抗震性能。为避免大位移引起相邻连接设备的损坏,本文还进一步针对悬吊式换流阀开展了限制位移措施的研究,分析结果表明:在设备底部施加弹簧拉索装置能够有效地限制换流阀在强地震作用下的位移响应。
[Abstract]:Suspension type converter valve has been widely used in China's southwest area with high seismic intensity of UHV power transmission project, the importance of self-evident seismic performance research. Based on the background of the northwest of Yunnan Province to Guangdong UHV DC power transmission project, established a three-dimensional model of converter valve - the valve hall structure, using modal analysis and the integration method of suspension on the sending end of HVDC converter valve seismic performance and limiting measures were studied. The effects of weight of the modal analysis found that considering the low order modes of converter valve - the valve hall system to better avoid the peak frequency of earthquake and the plant. Based on the dynamic integration method of the in the analysis we consider 3 seismic waves (2 natural waves and 1 artificial wave) effect, the results show that the suspension type converter valve with low frequency, large displacement, low stress dynamic response characteristics, so it has excellent shock resistance . in order to avoid the damage caused by large displacement of adjacent connected devices, this paper also further for suspension type converter valve on limit displacement measures, analysis results show that the displacement of cable spring device at the bottom of the device can effectively limit the converter valve under strong earthquake response.

【作者单位】：中国水利水电科学研究院流域水循环模拟与调控国家重点实验室;
【基金】：中国水利水电科学研究院优秀青年科技人员科学研究专项资金项目(抗基本科研1510)
【分类号】：TM721.1

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