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路基土密实度测试方法研究综述 被引量:4
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作者 靳建明 《路基工程》 2011年第2期1-4,共4页
在路基路面设计中,需要控制路基的施工质量,以保证路基具有足够的承载能力、较低的压缩性及渗透性。而土的密实度测试是控制填土路基施工质量的一项重要内容,其测试方法目前主要有两大类:无损测试法和有损测试法。据此,对各种测试方法... 在路基路面设计中,需要控制路基的施工质量,以保证路基具有足够的承载能力、较低的压缩性及渗透性。而土的密实度测试是控制填土路基施工质量的一项重要内容,其测试方法目前主要有两大类:无损测试法和有损测试法。据此,对各种测试方法进行了综述,并阐述了今后的发展方向。 展开更多
关键词 路基 土密实度 无损测试 有损测试
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Parameter Test and Analysis for Dynamic Compensation Devices in Wind Power Farms
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作者 Bai Runqing Qin Rui Zhi Yong Zhou Xichao Yang Yong 《Electricity》 2012年第4期20-24,共5页
The dynamic reactive power compensation equipment in Jiuquan Wind Power Base of above 10 GW consists of three different types of compensation devices, including: static var generator (SVG), thyristor controlled com... The dynamic reactive power compensation equipment in Jiuquan Wind Power Base of above 10 GW consists of three different types of compensation devices, including: static var generator (SVG), thyristor controlled compensator (TGR) and magnetically controlled reactor (MGR). The lack of experimental verification of performance is not conducive to voltage/var management or full utilization of device capaci- ties. In order to solve the above problems, the compensation device performance test was performed. The test items and procedures were selected based on related national standards with the consideration for different grid structures and wind farm operation modes. The testing contents included dynamic regulating range, active power loss, dynamic response time, and harmonic voltage level. Three types of compensation devices installed in different wind farms, namely SVG, TCR and MCR, were chosen and tested. The performances were compared and analyzed according to the field test results. 展开更多
关键词 wind power farm reactive power compensation parameter test
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