scholarly journals Research on Power Supply Scheme of Electrical Submersible Pump Fed by Inverter Based on Long Cable

2019 ◽  
Vol 260 ◽  
pp. 02007
Author(s):  
Yonghong Deng ◽  
Zhishan Liang
Keyword(s):  
Power Supply ◽  
Control Algorithm ◽  
Power Supply System ◽  
Functional Relationship ◽  
Frequency Converter ◽  
Supply System ◽  
Submersible Pump ◽  
Smart Power ◽  
Electrical Submersible Pump ◽  
Simulation Results

Electrical submersible pump (ESP) require remote operation of inverter via a long cable. The conventional control algorithm of inverter does not operate effectively. In this paper, a new power supply scheme is proposed, namely: Inverter - Motor - Generator - Transformer – Long Cable - ESP power supply program, referred to as IMGEESP power supply system. Based on the analysis of the IMGEESP, the model of the long cable was established, the functional relationship between inverter and smart power of the IMGEESP was deduced, so that the voltage model is constructed. The frequency converter and the intelligent power supply of IMGEESP are coordinated and controlled according to the speed command of the ESP and the cable length. Simulation results verifies the correctness and effectiveness of the proposed IMGEESP.

scholarly journals Advanced methods of transportation and distribution of electrical power in smart power grids of railways

2018 ◽  
Vol 239 ◽  
pp. 01010 ◽  
Author(s):  
Evgeny Tretyakov
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Power Flow ◽  
Power Supply System ◽  
Supply System ◽  
Power Grids ◽  
Smart Power ◽  
Smart Power Grids ◽  
Multi Agent ◽  
Distribution Grids

The relevance of the work is determined by the need to improve the electrical distribution grids of railways on the basis of digital technologies. The article presents advanced methods of transportation and distribution of electric power in smart power grids of railways based on multi-agent control. The analysis of the power supply system for stationary railroad consumers was performed and advanced ways of their development were defined. These methods should provide increased speed, adaptive determination of restrictions on using electric power equipment, management of mode parameters, sectioning and power flow modes in electrical distribution grids, restoration of power supply after emergency events. The method of adaptive control of transportation and distribution of electric energy in the power supply system of stationary railway consumers is developed based on the hierarchical structure of IEC 61850. This method takes into account the coordination of managing and local controllers in the data exchange environment, the control results and the variable area of responsibility of controllers and their division according to their functional purpose based on the multi-agent approach. The method of power flow control was developed to reduce power losses, increase the capacity of transport channels and ensure the restoration of the normal mode of the electric network by reconfiguring it and controlling active elements based on graph theory. The method takes into account the expected daily load curve, limits on the demand for capacity by active consumers and the possibility of a closed mode of electrical network operation through controlled cross-sections. The simulation results presented on the test circuit have showed the feasibility and efficiency of the proposed approaches.

scholarly journals Energy-Storage-Based Smart Electrical Infrastructure and Regenerative Braking Energy Management in AC-Fed Railways with Neutral Zones

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4053 ◽  
Author(s):  
Zhixuan Gao ◽  
Qiwei Lu ◽  
Cong Wang ◽  
Junqing Fu ◽  
Bangbang He
Keyword(s):  
Energy Storage ◽  
Energy Management ◽  
Power Supply ◽  
Control Algorithm ◽  
Power Supply System ◽  
Electronic Devices ◽  
Supply System ◽  
Regenerative Braking ◽  
Energy Management System ◽  
Power Electronic

This paper presents a modified power supply system based on the current alternating current (AC)-fed railways with neutral zones that can further improve the eco-friendliness and smart level of railways. The modified system complements the existing infrastructure with additional energy-storage-based smart electrical infrastructure. This infrastructure comprises power electronic devices with energy storage system connected in parallel to both sides of each neutral zone in the traction substations, power electronic devices connected in parallel to both sides of each neutral zone in section posts, and an energy management system. The description and functions of such a modified system are outlined in this paper. The system allows for the centralized- and distributed-control of different functions via an energy management system. In addition, a control algorithm is proposed, based on the modified system for regenerative braking energy utilization. This would ensure that all the regenerative braking energy in the whole railway electrical system is used more efficiently. Finally, a modified power supply system with eight power supply sections is considered to be a case study; furthermore, the advantages of the proposed system and the effectiveness of the proposed control algorithm are verified.

scholarly journals Improvement of Quadruple Structure and Optimization of Control Algorithm for Co-Phase Traction Power Supply System

2020 ◽  
Vol 38 (5) ◽  
pp. 1112-1121
Author(s):  
Shu Cheng ◽  
Chang Liu ◽  
Jianxiang Tang ◽  
Tianjian Yu ◽  
Kaidi Li
Keyword(s):  
Power Supply ◽  
Control Algorithm ◽  
Power Supply System ◽  
Reactive Power ◽  
Supply System ◽  
System Structure ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
And Control ◽  
Traction Power

Co-phase power supply is one of the key technologies to solve the technical bottlenecks such as electrical phase separation zone, poor power quality and defects in structure and control algorithms in traditional traction power supply systems and single co-phase power supply schemes, and an inevitable way to realize the development of electrified railways in the direction of safety, high speed and heavy load. Based on the single co-phase power supply technology, a novel quadruple co-phase power supply scheme with negative sequence elimination and to suppress reactive power and harmonic better for the two aspects of the system structure improvement and control algorithm optimization is proposed by combining the technologies of power system flexible transmission grid-connected and multiple inverters. Finally, the simulation model for the novel co-phase traction power supply system was designed and built, and the present method was verified by a set of simulation experiments so as to obtain the expected results.

Modeling and Simulation of Passive Dynamic Harmonic Filter Based on IGBT

2013 ◽  
Vol 475-476 ◽  
pp. 1615-1618
Author(s):  
Juan Li ◽  
Jing Chen ◽  
Yi Deng ◽  
Jing Li
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Reactive Power ◽  
Theoretical Foundation ◽  
Industrial Applications ◽  
Supply System ◽  
Harmonic Suppression ◽  
Harmonic Filter ◽  
Working Principle ◽  
Simulation Results

The objective of this work is to simulate a kind of passive harmonic filter based on IGBT to improve the power factor of the power supply system, then to verify the feasibility of reactive power compensation and harmonic suppression. According to the topological structure and working principle of passive dynamic harmonic filter based on IGBT, the simulation model of the system has been set by the Simulink tool. Simulation results show that the passive dynamic harmonic filter based on IGBT can compensate the corresponding reactive power and suppress harmonic in the power grid. The research of this paper has laid a theoretical foundation for this filter in industrial applications.

Smart power supply system for LED street lighting

2015 ◽  
Author(s):  
Mircea Risteiu ◽  
Ioan Ileana ◽  
Gheorghe Marc ◽  
Ionut Sofalca
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Smart Power ◽  
Street Lighting

Smart Power Supply System Based on Parallel DC-DC Modules

2021 ◽  
Author(s):  
Changjia Xu ◽  
Jingjing Huang ◽  
Geng Li ◽  
Xiaoyu Wang ◽  
Aimin Zhang ◽  
...  
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Smart Power
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