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光伏逆变器低电压穿越检测装置对比试验分析 被引量:5
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作者 张军军 郑飞 +3 位作者 张晓琳 董颖华 孙耀杰 马磊 《电网与清洁能源》 北大核心 2015年第5期84-88,共5页
依据我国低电压穿越检测技术规定与测试规程,采用2种不同类型的低电压穿越检测装置对光伏逆变器开展不同工况下低电压穿越测试,对比研究2种检测装置性能,得出结论:2种检测装置均能模拟低电压穿越曲线簇,实现低电压穿越测试功能;模拟电... 依据我国低电压穿越检测技术规定与测试规程,采用2种不同类型的低电压穿越检测装置对光伏逆变器开展不同工况下低电压穿越测试,对比研究2种检测装置性能,得出结论:2种检测装置均能模拟低电压穿越曲线簇,实现低电压穿越测试功能;模拟电网性检测装置响应时间和稳态跌落精度等稳态特性模拟上明显优于阻抗分压型低电压穿越检测装置,但是在对电网暂态特性模拟上阻抗分压型检测装置更优。 展开更多
关键词 光伏逆变器 低电压穿越检测 阻抗分压 模拟电网型
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Conversion of One- to Two-Way Streets in Birmingham, Alabama
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作者 Virginia P. Sisiopiku Jugnu Chemmannur 《Journal of Civil Engineering and Architecture》 2010年第8期27-36,共10页
This paper summarizes the approach, findings and evaluation methodology for a study that investigated the feasibility and potential impacts of street conversion options on traffic operations in downtown Birmingham, A... This paper summarizes the approach, findings and evaluation methodology for a study that investigated the feasibility and potential impacts of street conversion options on traffic operations in downtown Birmingham, Alabama. Of particular interest were issues related to conversion of grid systems from one-way to two-way operations. Recommendations on the most promising design and control configurations for implementation are also provided. A literature review was performed that threw light on the issues and challenges associated with implementation of street conversions, and the available best practices. A comprehensive traffic impact analysis that ensued employed the SYNCHRO computer simulation model to represent current and future operations so as to assess the implications of two-way conversions at and around the test sites. Detailed realistic two-way operations scenarios were developed that considered geometric and right-of-way restrictions, the location of land uses that generate and/or attract vehicular and pedestrian traffic, connectivity with the street grid, and accessibility to nearby freeway facilities, as well as practical concerns. 展开更多
关键词 Signal optimization one-way operations two-way operations traffic impacts analysis.
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