Shiyu Chen

University of Birmingham · Birmingham Business School

In order to improve electric-tree resistant performance and dielectric breakdown strength of ethylene-propylene-diene misch-polymere (EPDM) material used for cable accessory reinforce insulation, the two specific aromatic ketone compounds—vinylphenylacetone (VPE) and 4-propylene oxyxy-2-hydroxydibenzenone (AOHBP) are employed as two paradigms of vo...

In extremely cold regions, the dynamic viscosity concerning the transformer oil in the oil-immersed transformer will change in winter. The dielectric properties of the transformer's main insulation at low temperatures are significantly different from those at normal temperatures. As it is inevitable to carry out dielectric properties testing about...

Based on electromagnetic and heat transfer effects, a finite element model of a dry-type air-core reactor is established in this paper. The conductive properties of the epoxy resin for the reactor's sealing insulation at different ambient temperatures are tested using the frequency domain dielectric spectroscopy method. The finite element simulatio...

Ethylene propylene diene monomer (EPDM) is widely used as an insulation material in power equipment due to its excellent insulation performance. This article studies the method of preparing EPDM rubber composites by UV cross-linking. It analyzes three traditional functional auxiliary cross-linking agents, namely allyl isocyanurate (TAIC), trimethyl...

Nonlinear electric conductance of reinforced insulation can homogenize electric field distribution and suppress local electric field distortion inside high-voltage direct current cable accessories. To achieve a significant nonlinear electric conductance in ethylene–propylene–diene misch–polymere (EPDM) used for reinforced insulation of cable access...

Due to the excellent insulation performance, ethylene-propylene-diene monomer (EPDM) is used as cable accessories. To obtain EPDM materials with high dielectric breakdown strength (DBS), special polar molecules and chemistry grafting/crosslinking technique are used in this paper. In this paper, we choose Maleic anhydride (MAH) as an additive to int...

The new power grid puts forward higher and higher requirements for the insulation performance of power equipment. ZnO/LDPE composite has potential application value in high voltage transmission in China. With the wide application of ZnO/LDPE Composites, the study of the conductivity characteristics of the composites is helpful to further understand...

In smart substations, how to use multi-interval system information to realize online monitoring of substations, so as to obtain abnormal operation status early through state analysis, is a topic that needs to be solved in smart substations. The paper uses the multi-interval information correlation method to realize the online monitoring of the stat...

The paper summarizes the construction mode of distribution network automation system, and sorts out the operating characteristics of centralized intelligent mode and distributed intelligent mode. In view of the construction and operation of China’s distribution network automation system, point out common problems in system construction, operation a...

The insulator has an ice flashover failure. To reduce the calculation error of the equivalent icing thickness of transmission lines due to the insufficient number of sensors, a new online monitoring device for wire icing based on 3 sets of force sensors and inclination sensors was designed. The device integrates multiple monitoring functions such a...

A power price control strategy is proposed for the charging of electric vehicles. Aggregation managers centrally manage the batteries of electric vehicles, and take into account the limited power supply of the grid during peak electricity consumption, and adjust the demand for charging through electricity price control. By analyzing the main body o...

As an important cornerstone of the construction of the energy Internet, the ubiquitous power Internet of Things is of great significance for improving the overall efficiency and social efficiency of the power grid, and promoting the development of emerging services that meet the needs of users. The thesis first elaborates the basic concepts and cha...

With the development of UHV and long-distance power transmission technology in my country's power grid, the electromagnetic environment of 100kV UHV transmission lines will be one of the key issues affecting the feasibility of UHV transmission. The impact of low-frequency noise from UHV AC transmission lines on the lives of residents along the corr...

Through the analysis of the microgrid architecture under the access of the ubiquitous power Internet of Things and the current construction of the peak shaving auxiliary service market, the feasibility, necessity and economy of the microgrid participating in the peak shaving auxiliary service market are demonstrated. The thesis makes full use of in...

The introduction of intelligent substation process layer network has caused great changes in the data source and transmission method of relay protection, and its action performance and reliability are increasingly dependent on the communication network. The data flow of the relay protection in the intelligent substation and the communication mechan...

With the continuous development of the scale of the power grid and the advancement of the integrated mode of regulation and control, the amount of real-time monitoring information in the power grid system has grown rapidly today, which has imposed a great burden on all levels of dispatch monitoring. The old alarm function of the power dispatching a...

China’s pumped storage power station has a broad prospect, in which salient pole synchronous motor plays an important role. In this paper, the mathematical expression of electromagnetic force in the case of short circuit of the excitation winding of salient pole synchronous motor is derived, and the variation law of electromagnetic force density in...

With the deepening of the reform of power enterprises, it is imperative for the maintenance of power equipment to be replaced by conditional maintenance. Therefore, combining the advantages of the expert system and the comprehensive analysis technology of multiple fault diagnosis algorithms, an intelligent power equipment condition maintenance syst...

Nowadays, Electrostatic precipitator (ESP) is an important large-scale equipment for reducing dust elimination and reducing pollution in industrial production. As the second working step of ESP, dust charging is very important, and its charge directly affects the subsequent work of the electrostatic precipitator and the dust removal efficiency. In...

In this paper, a multi-stage TETS charging system of the PNGV model of lithium-ion battery is proposed based on on the analysis of the equivalent circuit model of lithium-ion battery and the existing charging method. Using this system, the charging speed is increasing while the polarization and the temperature rising is suppressed. Taking into acco...