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7 results on '"Wang, Jinhao"'

2. Analysis on grid-friendly microgrid economic operation

Author

Lei Da, Xu Jiajia, Wang Jinhao, Zhang Min, Li Shengwen, and Li Huipeng

Subjects
Engineering, business.industry, 020209 energy, Electrical engineering, 02 engineering and technology, Grid, Automotive engineering, Intermittent power, Harmonics, Scalability, Grid friendly, 0202 electrical engineering, electronic engineering, information engineering, Microgrid, Volatility (finance), Operation model, business
Abstract

The ability of the grid-friendly microgrid responding the system operation demand is analyzed by exploiting potentialities of grid operation from the traditional load side. The volatility of DGs output is balanced by including controlling EVs the charging and discharging. The output of microgrid is scalable through coordinating all kinds of DGs based on which a microgrid economic operation model is built. The simulation result shows the microgrid can absorb internal intermittent power and achieve system dispatching well by coordinating kinds of powers. Its dispatching potentiality is sizable.

Published
2016

4. Power Quality Distribution Characteristics Analysis for Multi- electrified Railway Traction Load based on Improved Gaussian Mixture Models with Merging Operator

Author

Wu Yulong, Ying Tian, Chaoying Yang, Weiqing Sun, Xiao Chang, Wang Jinhao, and Qi Yuewen

Subjects
Engineering, Distribution (number theory), business.industry, medicine.medical_treatment, medicine, Mechanical engineering, Power quality, Control engineering, Merging operator, Traction (orthopedics), business, Mixture model
Published
2016

5. Electric Railway Loufan Traction Station Of Shanxi Power Grid Harmonic Impact Analysis

Author

Chaoying Yang, Lei Da, Lei Yao, Weiqing Sun, Feng Lei, Wang Jinhao, and Mingde Cao

Subjects
Engineering, business.industry, medicine.medical_treatment, Traction (orthopedics), Automotive engineering, Traction motor, Harmonic analysis, Traction substation, Electric locomotive, medicine, Harmonic, Power quality, Power grid, business
Published
2016

6. Analysis of Harmonics Infiltration Produced by Electrification Railroad on 220kv and 35kv Network

Author

Wang Jinhao and Wu Xiao-dong

Subjects
Engineering, Total harmonic distortion, Electric fence, business.industry, Infiltration, Point of common coupling, Electrical engineering, Harmonic, General Medicine, Mechanics, Electrification railroad, law.invention, Electric power system, Electrification, law, Harmonics, business, Transformer, Engineering(all), Coupling transformer
Abstract

Through analysis of measure data on three 220 kV transformer substation in Shanxi China, the results show that harmonic current produced by electrification railroad injects into power system in a proportion through 110 kV point of common coupling, and the infiltration coefficient is closed to 1 if harmonic current direction is 110 kV to 35 kV, this phenomenon coincides with usual law; but there has strong infiltration in harmonic voltage between 110 kV and 220 kV system, and the infiltration coefficient could be not negligible, it does not coincide with usual law. Therefore, 110 kV harmonic distortion produced by electrification railroad not only infiltrates to 220 kV system thought coupling transformer, but also disseminates even hundreds of kilometres thought electric fence.

Published
2012

7. The interaction research between public grid and traction power supply system

Author

Xue Lei, Wang Jinhao, Liu Yingying, Wang Shu-zhong, Li Shuying, Liu Yuzhuo, Li Mengzan, and Pan Leilei

Subjects
Engineering, business.industry, medicine.medical_treatment, Electrical engineering, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Traction (orthopedics), Grid, Automotive engineering, System model, Smart grid, Traction substation, Harmonics, Grid-connected photovoltaic power system, medicine, business, Voltage
Abstract

In this paper, comprehensive testing of the power quality in a typical utility grid in existence of the electric railway traction load is taken, the measurement and simulation results are analyzed, it is verified that the electrified railway grid is an important factor in pollution of typical utility grid. Firstly in this paper, the typical utility power grid and traction power supply system model are established. The interaction between typical public grid and traction power supply system is analyzed then, through PSCAD/EMTDC simulation, the result of the improvement is got. The simulation results show that once SVC is installed in a substation, its power quality can be improved significantly, the level of harmonics and three-phase voltage imbalance can be decreased.

Published
2008

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