作者机构：
[Zheng, Changzheng; Mao, Zhe; Xie, Yan] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Peoples R China.;[Li, Mu] Wuhan Nari Ltd Liabil Co, State Grid Elect Power Res, Transmiss Dept, Wuhan 430074, Peoples R China.
会议名称：
2015 International Power,Electronics and Materials Engineering Conference（IPEMEC 2015）
会议时间：
2015-05-16
会议地点：
中国辽宁大连
会议主办单位：
[Xie, Yan;Zheng, Changzheng;Mao, Zhe] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Peoples R China.^[Li, Mu] Wuhan Nari Ltd Liabil Co, State Grid Elect Power Res, Transmiss Dept, Wuhan 430074, Peoples R China.
会议论文集名称：
Proceedings of 2015 International Power,Electronics and Materials Engineering Conference(IPEMEC 2015)
关键词：
Double-joint strain insulator string fittings;Equalizing shielding ring;Electric field
摘要：
Double-joint strain insulator fittings are the main equipment substations. It is great significance for reducing its maximum electric field strength to avoid corona noise and to improve substation electromagnetic environment. Firstly double-joint strain insulator string fittings simulation model is given by use of ansys 14.0, and the electric field is simulated and calculated according to the actual installation location of the related equipment. The construction for double-joint strain insulator string fittings is optimized to reduce the electric field value on basis of studying on the simulation significantly higher electric field points. The simulation results show increasing the number of equalizing shielding ring, for reducing the electric field strength of double-joint strain insulator string fittings, is more effective than increasing the diameter of equalizing shielding ring.
期刊：
ADVANCES IN ENERGY SCIENCE AND EQUIPMENT ENGINEERING,2015年:2377-2380
作者机构：
[Zheng, Changzheng; Mao, Zhe; Xie, Yan] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan, Hubei, Peoples R China.;[Li, Mu] Nari Ltd Liabil Co, State Grid Elect Power Res Inst, Wuhan, Peoples R China.
摘要：
Single-joint strain insulator fittings are the main equipment substations. It is of great significance for reducing its maximum electric field strength to avoid corona noise and to improve substation electromagnetic environment. Firstly single-joint strain insulator string fittings simulation model is given by use of ansys 14.0, and the electric field is simulated and calculated according to the actual installation location of the related equipment. The construction for single-joint strain insulator string fittings is optimized to reduce the electric field value on the basis of studying the simulation significantly higher electric field points. The simulation results show increasing the number of equalizing shielding ring, for reducing the electric field strength of single-joint strain insulator string fittings, is more effective than increasing the diameter of the equalizing shielding ring.
摘要：
This paper introduced a new modular multi-level converter (MMC), which could enhance the voltage and power level by sub-converter modules in series and was easy to extend to any level of output. Its structure and working mechanism were described. By analyzing the energy transfer performance of STATCOM based on MMC working conditions in the unbalance compensation, this paper studied compensation control theory in unbalanced complex conditions. To obtain compensation control response speed faster and better compensation effect, a comprehensive compensation control strategy was proposed based on direct current control mode. The simulation results show the strategy has a better tracking precision and response speed for the unbalance compensation current.
关键词：
Grain depots monitoring system;Improved BP NN;MATLAB;Multi-sensors data fusion
摘要：
According to the architecture characteristics of the grain storage system and the main factors influencing the safety of the grain storage, this paper has proposed a two layers data fusion system based on multi-sensors grain storage monitoring technique, which is used to identify the safety of the storage. The first layer including data extraction and encoding, the second layer is mainly built up by the improved BP NN. The results show that the system can fully fuse the data collected by the sensors and realize the real-time safety monitoring of the grain storage.
摘要：
This paper introduced a new modular multi-level converter (MMC), which could enhance the voltage and power level by sub-converter modules in series and was easy to extend to any level of output. Its structure and working mechanism were described. By analyzing the higher harmonic components circulation generated by the inconsistencies in the three-phase upper and lower arm voltage, a loop control strategy is proposed for the suppression of the circulation in the arms of the M-STATCOM. Simulation results verify the effect of the controller.
关键词：
Bridge type;Optimal selection;Grey relational analysis;Evaluation;Correlation coefficient;Grey theory
摘要：
The selection of the bridge type generally depends on the designer's experiences at the present time. It exist some subjectivity and one-sidedness unavoidably. On the basis of the characteristics of complexity and the uncertainty of optimal selection of bridge type scheme, grey relational analysis model in bridge type multi-scheme selection application has been put forward in this paper. The index system of influencing bridge type selection is determined. Application model and procedures of the grey relational analysis method are introduced. According to the degree how close it is with the ideal dot, the optimal scheme is easy to be selected out. Through the optimization analysis of Soueryu Bridge type schemes, it is proved that the optimal scheme of bridge type based on grey relational analysis has the strong recognition judgment ability. It is convenient, quantitative, and strict. It provided a new method and a possible new way for optimal selection of bridge type scheme.
