1000kV避雷器隔震性能的有限元分析
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摘要
地震中变电站的高压电气设备易损性极高。为探讨隔震技术在特高压电气设备中的适用性,利用ANSYS有限元分析软件,分别建立了1000kV带支架避雷器结构隔震前后的有限元模型,输入地震波时程进行动力时程响应分析。结果表明,采用基底隔震后的避雷器结构基频降低,顶端位移响应、各点加速度响应、瓷瓶根部弯曲应力较隔震前的响应都有不同程度的减小,验证了隔震系统的有效性,为隔震技术在特高压电气设备上的实际应用提供了依据。
High-voltage electric equipment in substation has high vulnerability during earthquakes.In order to investigate the applicability of isolation technology in UHV electric equipments,two finite element models of 1 000 kV arrester with and without isolation layer are established by ANSYS.And the dynamic time-history analysis using these two models are carried out by inputting earthquake waves.The results show that the arrester with base isolation has lower frequency.And its top displacement response,acceleration response,bending stress of porcelain bushings all have different degrees of reduction compared to those of arrester without base isolation.These conclusions have verified the effectiveness of the isolation system,and have provided a basis for the practical application of isolation technology in UHV electric equipments.
High-voltage electric equipment in substation has high vulnerability during earthquakes.In order to investigate the applicability of isolation technology in UHV electric equipments,two finite element models of 1 000 kV arrester with and without isolation layer are established by ANSYS.And the dynamic time-history analysis using these two models are carried out by inputting earthquake waves.The results show that the arrester with base isolation has lower frequency.And its top displacement response,acceleration response,bending stress of porcelain bushings all have different degrees of reduction compared to those of arrester without base isolation.These conclusions have verified the effectiveness of the isolation system,and have provided a basis for the practical application of isolation technology in UHV electric equipments.
引文
[1]谢强.电力系统的地震灾害研究现状和应急响应[J].电力建设,2008,29(8):1-6.
[2]罗治强,董昱,胡超凡.2008年国家电网安全运行情况分析[J].中国电力,2009,42(5):8-12.
[3]Erdik M,Yilmaz C,Akkas N.Seismic rehabilitation of a capacitor bank structure through base isolation[C]//Proceedings of the9th European Conference on Earthquake Engineering,Moscow,Russia,1995(9):365-74.
[4]DelfosseG C.Use of base isolation for seismic rehabilitation of a power circuit breaker[C]//Proceedings of the11th European Conference on Earthquake Engineering,Paris,France,1998,1-9.
[5]Skinner R I,Robinson W H,McVerry G H.工程隔震概论[M].谢礼立,译.北京:地震出版社.1999.
[6]Donna M D,Serino G,Giannini R.Advanced Earthquake Protection Systems For High Voltage Electric Equipment[C].12th European Conference on Earthquake Engineering,London,2002(9):9-13.
[7]刘彦辉.电力建筑及高压电气设备的减震控制研究[D].兰州:兰州理工大学土木工程学院,2007.
[8]韩军科,朱全军,杨风利,等.基底隔震技术在高压电气设备中的应用[J].电网技术,2007,31(S2):69-71.
[9]文波,牛荻涛,张俊发,等.隔震技术在高压电力设施中的应用[J].工业建筑,2009,39(1):36-41.
[10]PaolacciF,Giannini R.Study of the effectiveness of steel cable dampers for the seismic protection of electrical equipment[C].The14th World Conference on Earthquake Engineering,Beijing,2008:12-17.
[11]Saadeghvaziri M A,Feizi B,Kempner L J.On seismic response of substation equipment and application of base isolation to transformers[J].IEEE Transactions on power delivery,2010,25(1):77-186.
[12]田金梅.梁单元与壳单元在固有振动计算中的比较[J].核动力工程,2008,29(1):50-52,80.
[13]GB50260—96电力设施抗震设计规范[S].
[14]IEEE Std693TM—2005IEEE recommended practice for seismic design of substations[S].
[2]罗治强,董昱,胡超凡.2008年国家电网安全运行情况分析[J].中国电力,2009,42(5):8-12.
[3]Erdik M,Yilmaz C,Akkas N.Seismic rehabilitation of a capacitor bank structure through base isolation[C]//Proceedings of the9th European Conference on Earthquake Engineering,Moscow,Russia,1995(9):365-74.
[4]DelfosseG C.Use of base isolation for seismic rehabilitation of a power circuit breaker[C]//Proceedings of the11th European Conference on Earthquake Engineering,Paris,France,1998,1-9.
[5]Skinner R I,Robinson W H,McVerry G H.工程隔震概论[M].谢礼立,译.北京:地震出版社.1999.
[6]Donna M D,Serino G,Giannini R.Advanced Earthquake Protection Systems For High Voltage Electric Equipment[C].12th European Conference on Earthquake Engineering,London,2002(9):9-13.
[7]刘彦辉.电力建筑及高压电气设备的减震控制研究[D].兰州:兰州理工大学土木工程学院,2007.
[8]韩军科,朱全军,杨风利,等.基底隔震技术在高压电气设备中的应用[J].电网技术,2007,31(S2):69-71.
[9]文波,牛荻涛,张俊发,等.隔震技术在高压电力设施中的应用[J].工业建筑,2009,39(1):36-41.
[10]PaolacciF,Giannini R.Study of the effectiveness of steel cable dampers for the seismic protection of electrical equipment[C].The14th World Conference on Earthquake Engineering,Beijing,2008:12-17.
[11]Saadeghvaziri M A,Feizi B,Kempner L J.On seismic response of substation equipment and application of base isolation to transformers[J].IEEE Transactions on power delivery,2010,25(1):77-186.
[12]田金梅.梁单元与壳单元在固有振动计算中的比较[J].核动力工程,2008,29(1):50-52,80.
[13]GB50260—96电力设施抗震设计规范[S].
[14]IEEE Std693TM—2005IEEE recommended practice for seismic design of substations[S].
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