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变电站系统抗震冗余性量化方法

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为定量评价冗余性对变电站系统抗震性能的影响,提出了基于状态树方法的系统抗震冗余性分析方法。首先,在功能单元层面提出了冗余度、冗余效果指标、冗余系数的定义;其次,给出了系统冗余度的线性加权组合和非线性加权组合计算方法,将功能单元的冗余度和冗余系数进行集成;最后,建立了系统冗余度和冗余效果指标之间的关联模型。结果表明,变电站系统的抗震性能与其冗余度呈正相关性,系统冗余度-冗余效果指标模型可采用过原点直线表达,斜率为系统性能指标最大增量与系统最大冗余度的比值。母线单元具有汇集、分配电能的作用,对进线单元、变压器单元的冗余作用具有提升效果。采用线性加权和非线性加权组合计算方法时,变电站系统的最大冗余度分别为0。870和0。980,系统冗余度-冗余效果指标模型的斜率分别为0。698 9和0。618 1。
Seismic redundancy quantification method of substation systems
To quantify the influence of redundancy on the seismic performance of substation systems,a state tree-based seismic redundancy assessment method was put forward.Firstly,the degree of redundancy(DOR),the effect index of redundancy(EOR)and the coefficient of redundancy(COR)were proposed at the functional unit level.Then,the linear weighted combination(LWC)and the nonlinear weighted combina-tion(NLWC)calculation methods for the DOR of the system based on the DOR and COR of the functional units was proposed.Finally,the correlation model of the system DOR and EOR was developed.The results show that the seismic performance of the substation system is positively related to its redundancy.The system DOR-EOR model is expressed using a straight line through the origin.The slop is the ratio of the maximum in-crement of system performance index to the maximum DOR of the system.The busbar unit is used to collect and distribute electricity,which amplifies the redundancy influence of the in-line unit and the transformer unit.Using the LWC and NLWC calculation methods,the maximum DORs of the system are 0.870 and 0.980,and the corresponding slopes of the system DOR-EOR model are 0.696 8 and 0.618 1,respectively.

substation systemseismic redundancyquantification analysisdegree of redundancyeffect inex of redundancycoefficient of redundancy

李吉超、尚庆学、王涛

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中国地震局工程力学研究所,地震工程与工程振动重点实验室,哈尔滨 150080

地震灾害防治应急管理部重点实验室,哈尔滨 150080

清华大学土木工程系,北京 100084

变电站系统 抗震冗余性 量化分析 冗余度 冗余效果指标 冗余系数

中国地震局工程力学研究所基本科研业务费专项资助项目国家自然科学基金青年科学基金资助项目黑龙江省自然科学基金资助项目

2021EEEVL031052208483LH2020E023

2024

东南大学学报(自然科学版)
东南大学

东南大学学报(自然科学版)

CSTPCD北大核心
影响因子:0.989
ISSN:1001-0505
年,卷(期):2024.54(1)
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