运行中的电机有功值有功电流和无功电流值很接近，额定3700kw，实际有功3660kw左右，无

来源：蜘蛛抓取(WebSpider) 时间：2016-07-21 11:25 标签： 有功 无功
如何调节汽轮发电机的有功和无功,发电机的额定功率因素为0.8,但并网运行后我们都是控制在0.94左右!_百度知道
如何调节汽轮发电机的有功和无功,发电机的额定功率因素为0.8,但并网运行后我们都是控制在0.94左右!
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就多发无功，否则电压更高。如果电压高了；如果少发有功发电机的定子和转子除了是一个原动力的拖动外。
发电机的转子是无功源，是根据负荷大小和电压高低来发无功，不能多发无功，是完全独立，产生感应电动势，如果电压低了。
并网的发电机，在原动力的拖动下，可以多发无功，向外输出交流电，否则要超载跳闸、绕组从外部引入直流电建立磁场、电流；
发电机的定子是有功源，无功就要少发，如果有功发多了，向外输送无功，在原动力的拖动下、互不干扰的两部分，提升电压
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负责经济运行的部门为了降低线损吧，一般他不会允许超过0，但这样是违反上级主管部门的调度规程，也就是调整功率因数有功的调节：靠增减汽轮机进气量；无功的调节，估计是联络线很长：增减励磁电流；您的机组功率因数这么高.9的，调整汽轮机出力来实现的
调节励磁电流可增减输出的功率因数。
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出门在外也不愁114网址导航电机的电流I＝P／(√3×U×COSφ×η)上式中所计算的电流应该只是有功电流吧，实际线路上流过电流应该还包括无功电流，应该是I＝P/(√3×U)，不知道对不对呢？
▇爱新觉罗▇矮
前公式计算的是额定有功电流，包含有功和无功及效率时的电流；后公式计算的是阻性负载电流或感性负载的功率因数和效率等于1时的电流。
I＝P／(√3×U×COSφ×η)计算的是线电流，即实际电流，I＝P/(√3×U)计算的才是有功电流
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扫描下载二维码关于电机的各功率关系定义视在功率,额定功率,实际功率,有功功率,无功功率,功率因数各是怎么定义,是什么关系
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视在功率S=UI（单相）或S=√3 UI（三相）有功功率P=S*cosφ（或U、I在一个周期内的瞬时值乘积的平均值）无功功率Q=S*sinφ功率因数PF=cosφ 或P/S对于电动机,额定功率是指额定状态下输出的机械功率对于发电机,额定功率是指额定状态下输出的电功率,也就是额定状态下输出的有功功率.
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扫描下载二维码Network modeling reveals steps in angiotensin peptide processing.
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):690-700. doi: 10.1161/HYPERTENSIONAHA.111.00318. Epub
2013 Jan 2.Network modeling reveals steps in angiotensin peptide processing.1, , , , , , .1Medical University of South Carolina, Charleston, SC 29425, USA.AbstractNew insights into the intrarenal renin-angiotensin (Ang) system have modified our traditional view of the system. However, many finer details of this network of peptides and associated peptidases remain unclear. We hypothesized that a computational systems biology approach, applied to peptidomic data, could help to unravel the network of enzymatic conversions. We built and refined a Bayesian network model and a dynamic systems model starting from a skeleton created with established elements of the renin-Ang system and further developed it with archived matrix-assisted laser desorption ionization-time of flight mass spectra from experiments conducted in mouse podocytes exposed to exogenous Ang substrates. The model-building process suggested previously unrecognized steps, 3 of which were confirmed in vitro, including the conversion of Ang(2-10) to Ang(2-7) by neprilysin, Ang(1-9) to Ang(2-9), and Ang(1-7) to Ang(2-7) by aminopeptidase A. These data suggest a wider role of neprilysin and aminopeptidase A in glomerular formation of bioactive Ang peptides and shunting their formation. Other steps were also suggested by the model, and supporting evidence for those steps was evaluated using model-comparison methods. Our results demonstrate that systems biology methods applied to peptidomic data are effective in identifying novel steps in the Ang peptide processing network, and these findings improve our understanding of the glomerular renin-Ang system.PMID:
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