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220kV站主变停运致110kV母线停运后复电策略的研究与实现
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作者 成江东 高贞彦 +2 位作者 梁苑 林桂辉 赵勇 《电气技术》 2018年第7期93-96,102,共5页
备自投装置是保障电力系统供电可靠性的重要设备。在220kV站中,若某110kV母线失电,站内有备自投,则备自投动作策略目标为将其由当前主变改由另一主变供电;但若本站主变均已经失压,则将无法通过备自投动作,达到110kV母线复电的目的。本... 备自投装置是保障电力系统供电可靠性的重要设备。在220kV站中,若某110kV母线失电,站内有备自投,则备自投动作策略目标为将其由当前主变改由另一主变供电;但若本站主变均已经失压,则将无法通过备自投动作,达到110kV母线复电的目的。本文提出的智能复电系统,能够根据地区电网特点,充分考虑备自投动作时序、遥测及遥信,以复电单元管理母线复电过程,自动检测闭锁条件、充电条件、启动条件、动作条件及220kV主变与110kV母线状态,搜索备用电源,给出复电策略,并在母线复电后自动检测供电路径越限情况,给出切负荷策略。实验表明,智能复电系统达到了预期目的。 展开更多
关键词 复电单元 条件 路径
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Analytical Study, 1-D Optimization Modeling, and Testing of Electrode Supported Solid Oxide Electrolysis Cells
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作者 D.G. Milobar P.W. Li J.E. O'Brien 《Journal of Energy and Power Engineering》 2010年第7期15-26,共12页
This paper presents a straightforward model studying the performance of a solid oxide electrolysis cell at less computational effort while is still comprehensive accounting for details of all physics involved. The mod... This paper presents a straightforward model studying the performance of a solid oxide electrolysis cell at less computational effort while is still comprehensive accounting for details of all physics involved. The model is one dimensional and can be used to optimize SOECs that have composite electrodes. It includes an average mass transfer analysis used to simulate concentration polarization, activation polarization, as well as ohmic loss. The electrochemical reaction that occurs within the electrode functional layers has been accounted for in the calculation of the concentration polarization. This is believed to give a more realistic view of the mass transfer that occurs in SOECs with composite electrodes via a simple and straightforward one dimensional model. Experimental work with SOECs also has been done and some results are reported. The simulation results are compared with experimental data and the agreement is satisfactory. The model can be conveniently used for optimization of the SOEC electrodes and operational conditions. 展开更多
关键词 High temperature electrolysis solid oxide electrolysis cells hydrogen production.
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