scholarly journals Discussion and Analysis on Operation Reliability of DC Oil Pump in Thermal Power Unit

2021 ◽  
Vol 2095 (1) ◽  
pp. 012076
Author(s):  
Ruicai Si ◽  
Wenfei Hu ◽  
Songhan Wang ◽  
Zhongyan Wang ◽  
Xiwen Liu ◽  
...  
Keyword(s):  
Pump Power ◽  
Steam Turbine ◽  
Power Supply ◽  
Power Plants ◽  
Power Supply System ◽  
Thermal Power ◽  
Supply System ◽  
System Configuration ◽  
Oil Pump ◽  
Treatment Measures

Abstract In recent years, some power plants in China can’t start the DC oil pump normally in emergency due to the faults of DC oil pump power supply system and imperfect control circuit. It caused the turbine to cut off the oil and burn the Bush, which caused a serious accident. In view of the importance of DC oil pump, this paper analyzes the interlock logic, start stop permission, direct circuit and power system configuration of DC oil pump, put forward the treatment measures. It is of great significance to prevent the oil cut-off and Bush burning accident of steam turbine.

scholarly journals The Efficiency of Distributed and Centralized Power System Integration

2019 ◽  
Vol 114 ◽  
pp. 05007 ◽  
Author(s):  
Felix Byk ◽  
Yana Frolova ◽  
Ludmila Myshkina
Keyword(s):  
Power Systems ◽  
Power System ◽  
Distributed Generation ◽  
Power Supply ◽  
Power Plants ◽  
Power Supply System ◽  
Supply System ◽  
Technical Solution ◽  
Local Power ◽  
The Impact

The existing centralized power supply system has the alternative due to distributed generation. By certain conditions distributed cogeneration allows to increase the reliability and quality of power supply and to reduce the cost of electricity for consumers. Therefore, a lot of energy-intensive consumers switched to their own power supply systems, as it turned out to be a competitive technical solution. The total gasification of the country’s regions and the presence of domestic manufacturers of gas turbine and gas piston power plants accelerated this process. Nowadays local power systems are emerging with cogeneration plants are the main source of heat and electricity there. The feasibility justification of the kind and type of generation is determined by many factors, including circuit-mode parameters in the local power system and adjacent network. Local power systems based on the principles of self-balance are proposed to name as energy cells. The integration of energy cells with regional power system increases the technical and economic effectiveness of power supply system for consumers. The proposed power systems transition leads to certain systemic effects. Received effects are depending on functions of distributed generation. This paper explores the impact of scheme and mode factor on the technical effects.

Math model of a power beam feeding a spacecraft under conditions of intermittent power supply

2020 ◽  
pp. 56-65
Author(s):  
Aleksey M. BEZNYAKOV ◽  
Aleksey V. NEMIROV ◽  
Gennadiy B. STEGANOV
Keyword(s):  
Power Consumption ◽  
Power Supply ◽  
Power Plants ◽  
Power Supply System ◽  
Supply System ◽  
Solar Array ◽  
Math Model ◽  
Operational Conditions ◽  
Supply Systems

The paper discusses transmission, reception, conversion and consumption of energy of laser and microwave radiation from Earth or space power plants. It proposes a classification of advanced systems for remote supply of power to spacecraft (SC). It addresses practicability of using remote power supply to SC under various operational conditions. The paper formulates the problem of evaluating the capability of the existing SC power supply systems to receive and convert emissions from additional sources. An analysis of criteria for the quality of pulsed or rapidly varying flow of energy into a SC power supply system. It reviews the structures of typical channels of power consumption in a SC power supply system. An equivalent circuit replacing receivers of pulsed or rapidly changing radiation is described. A math model is proposed for a power consumption channel operating under conditions of intermittent power supply to photovoltaic converters. Math modeling results are presented and analyzed. Key words: space power plant, solar array, onboard power supply system, power consumption channel, voltage converters.

An algorithm for selection of a wind-driven power plant for a standalone power facility

2019 ◽  
Vol 2 (3) ◽  
pp. 152-165
Author(s):  
P. A. Khlyupin ◽  
G. N. Ispulaeva
Keyword(s):  
Power Plant ◽  
Wind Turbines ◽  
Power Supply ◽  
Alternative Energy ◽  
Power Plants ◽  
Power Supply System ◽  
Supply System ◽  
Power Generators ◽  
Different Types ◽  
Selection Of

Introduction: the article reviews the main types of wind turbines and electric power generators designated for wind-driven power plants, as well as new technological solutions. The co-authors have identified the main strengths and weaknesses of wind-driven power plants used as a source of alternative energy. The co-authors have developed an algorithm for selection of a standalone power supply system using a wind-driven power plant.Subject of research: using a comprehensive approach to efficiently design and develop wind-driven power plants with account for climatic and geographic conditions, specifications of wind-driven power plants to be installed.Objective: identification of requirements and specifications needed to develop an algorithm for selection of a standalone power supply system using a wind power plant.Methods: the co-authors have analyzed different types of wind turbines and power generators which are currently in use.Results and discussion: the co-authors present the algorithm for selection of a standalone power supply system using a wind-driven power plant.Conclusion: the algorithm, which is being developed by the co-authors, helps to design an efficient standalone power supply system having a wind-driven power plant.

Optimizing Layout of Distributed Generation Sources of Power Supply System of Agricultural Object

2021 ◽  
Vol 10 (3) ◽  
pp. 70-84
Author(s):  
Yuliia Daus ◽  
Valeriy Kharchenko ◽  
Igor Yudaev
Keyword(s):  
Distributed Generation ◽  
Power Supply ◽  
Power Plants ◽  
Power Supply System ◽  
Energy System ◽  
Supply System ◽  
Total Consumption ◽  
Agricultural Enterprise ◽  
Solar Intensity ◽  
Intensive Work

The increasing penetration of photovoltaic technology calls for the development of an effective method for optimization of grid-connected photovoltaic power plants. Although extensive studies on the definition, implementation, and optimization of these systems have been conducted, the design and management of a smart energy system remains a critical challenge. The purpose of the work is to increase efficiency of power supply system of agricultural facility by optimizing the placement and selection of parameters of photovoltaic sources of distributed generation. Application of photovoltaic sources of distributed generation as part of power supply system of agricultural enterprise allows to reduce the total consumption from the network in average basing on solar intensity data for 22 years by 40-53% from April to October, which is most expedient in view of the fact that this is a period of intensive work of the enterprise and the greatest load on its consumers; by 24-30% in February, March, and October; and by 14-17% the rest of the time.

scholarly journals The Design of Electric Conversion and Energy Storage Integration of SOFC Combined Power Supply System Based on Feature Fusion

2021 ◽  
Vol 292 ◽  
pp. 01026
Author(s):  
Shuijin Lu ◽  
Yujie Mo
Keyword(s):  
Energy Storage ◽  
Heat Exchanger ◽  
Power Supply ◽  
Power Supply System ◽  
Feature Fusion ◽  
Thermal Power ◽  
Supply System ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Combined Power Supply

In order to reduce the low effective utilization of the combined thermal power supply system caused by the abnormal energy distribution, the design of the electric conversion and energy storage integration of SOFC combined power supply system based on feature fusion is proposed. The design of internal combustion engine, heat storage device and battery is carried out. Based on the system temperature, SOFC heat exchanger model is established. The energy state in the heat exchanger model is analyzed and judged by feature fusion. According to the results, the energy is converted, stored and released. The experimental results show that the energy utilization efficiency of the system can reach 81.57%, which is 36.9% higher than the source system, which has good application value.

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