Modeling Of IoT Off-grid Power Supply System For Oil And Gas Pipelines In Remote Areas

Along with the reform and development of the energy average source structure,the consumption of oil and natural gas has gradually increased,and the scale of oil and gas pipelines has continued to expand.Because oil and natural gas are flammable,explosive and volatile,the light weight of oil and gas pipelines creates energy.Therefore,with the increasing scale of oil and gas pipeline networks,the safety of oil and gas pipeline transportation is becoming more and more fault-tolerant..In order to ensure the safe operation of oil and gas pipelines,the Internet of Things monitoring system came into being,realizing the real-time monitoring,control and management of oil and gas pipeline transportation.Since oil and gas pipelines are mostly distributed in remote areas such as the wild or the sea,the conventional power grid cannot be reached in many cases.The lack of continuous and stable power supply has become a key factor for the normal operation of the oil and gas pipeline IoT monitoring system.China's remote areas are rich in renewable energy resources,and the use of renewable energy resources to generate electricity for the oil and gas pipeline IoT monitoring system is an effective way to solve the power supply problem of oil and gas pipeline monitoring system.In this paper,the light-storage-combustion multi-energy complementary off-grid power supply system based on solid oxide fuel cell is designed for the problem of insufficient power supply in oil and gas pipelines in remote areas.Firstly,the working characteristics and operating mechanism of each component of the optical-storage-fired power generation system are studied,including photovoltaic power generation systems,solid oxide fuel cells,storage batteries and hydrogen storage tanks.Secondly,the power model of each component of the optical-storage-fired power generation system and the SOEC operating characteristic model are established,and the operation strategy of the optical-storage-combustion multi-energy complementary off-grid power supply system is established.The solid oxide fuel cell operating characteristic model considers the relationship between temperature,power generation and heat generation,and the battery capacity model takes into account temperature influencing factors.The optimal operation model of the optical-storage-combustion multi-energy hybrid power generation system is established with the minimum operating cost of the system as the objective function and the operational reliability as the constraint.Finally,three typical oil and gas pipelines with different irradiance levels and ambient temperatures(Sichuan,Ningxia,Tibet)were selected as research objects,and three oil and gas pipeline power supply configuration schemes were designed: photovoltaic power generation + storage batteries.Photovoltaic power generation + storage + RESOC and photovoltaic power generation + RESOC.The Matlab Cplex solver is used to solve the established operation optimization model of the optical-storage-combustion multi-energy complementary off-grid power generation system,and the power supply scheme with the best reliability and economy under different geographical environments and meteorological conditions is obtained.The research results show that the designed light-storage-combustion multi-energy complementary off-grid power generation system and optimized operation scheme can provide continuous and stable power for the oil and gas pipeline IoT monitoring system under the premise of ensuring higher power generation efficiency and system economy.The electrical energy requirements of the oil pipeline IoT system.This study can provide a useful reference for the design of off-grid power supply system for oil and gas pipeline IoT monitoring system in remote areas.