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- 저자 : Guirong Hu (검색결과 2 건)
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A Simple and Valuable Method for Detecting Levels of Interface of Oil -Water and Oil Layer
Guirong Lu,Hao Hu,Suolin Duan,Hongyuan Wang 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
A new method for monitoring two levels of interface of oil-water and oil layer is proposed in this paper. The method aims to estimate the two levels of oil and water in single tank. Different from popular way, a sensor with a simple structure from parallel-plate capacitor has been developed. One electrode of the sensor has been divided into two parts from diagonal line by a small crack. According to relationships between the capacitances measured from electrodes and two levels of interface of oil-water and oil layer, formulas for estimating the two levels have been derived and tested. The experimental results indicate that responses of the designed sensor are very satisfactory. Therefore, this is a simple and useful method, and the sensor is also worthy to be product.
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Yiming Xu,Zhiqiang Wang,Zheng Fang,Sichao Xun,Guirong Hu,Yusheng Shen,Hongyi Xiao,Dongning Wu 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.5
Soft Normally Open Point (SNOP) is a power electronic device used widely in power distribution network. It can solve many problems by adjusting reactive power compensation and active power transmission. The uncertainty and fluctuation of distributed generation (DG) may cause many problems to the distribution network. In order to balance the safety and economy in power flow optimization better, a self-adaptive power flow optimization method for active distribution network with multi-terminal SNOP considering difference of the risk of node voltage beyond limit is put forward. It takes both weighted voltage deviation and the network loss into objective function to construct the optimal operation model and mainly has two improvements: one is considering initial voltage deviation and real-time penetration of the DG to establish the self-adaptive weight model of the sum of voltage deviation in the objective function; the other is putting forward the weighting strategy for node voltage deviation which decided by the electrical distance, DG position and correlation between source output and load. Then, taking three improved IEEE33 node feeders as an example to verify the validity of the strategy. The results validate that the self-adaptive strategy can reduce the loss and improve the regulation of voltage better and is useful in distribution network under different penetration
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