Research On Capacity Optimization And Operation Of Combined System Of Photovoltaic And Light Hydrocarbon Gas

A series of pain points such as excessively large amount of energy consumption in oil field industry,high cost of electricity in large industry and pollution discharge are studied.the energy consumption is greatly reduced.nearly zero emission is realized,and then the strategic reserve of national energy security is realized.Combined with the engineering example of Shenyang Oil Production Plant of Liao he Oilfield,the excess associated gas waste gas produced in the oilfield is rationally utilized.Cheap light hydrocarbon gas can be obtained through the new light hydrocarbon gas making device.The associated gas is absorbed by the combined heat,power and cooling system of gas turbine.The intelligent micro-grid of oil field is built by combining distributed photovoltaic so as to realize multi-energy coordinated supply and cascade utilization.This paper studies the optimal configuration and operation of the combined photovoltaic and light hydrocarbon gas system with photovoltaic cell and gas turbine as the core equipment.Firstly,the development of the micro grid and light hydrocarbon gas research and development technology at home and abroad are analyzed.The mathematical models of photovoltaic power generation unit,gas turbine and its auxiliary equipment are established.The power characteristics and cost function of them are analyzed.By comparing the recovery and utilization technology of associated gas in oil field,this paper presents a new light hydrocarbon gas production technology which utilizes the waste resources of associated gas.Under the action of oil and gas mixer,the liquid waste resources fully mixing.The compressed air provided by the air compression pump provides gasification heat for light hydrocarbon oil without oil consumption,and converts liquid light hydrocarbon into gas state by means of physical gasification.Compared with the traditional gas production device,the light hydrocarbon gas fuel is produced more cheaply.The experimental analysis is carried out and the corresponding gas detection report is given.Secondly,with economic costs and benefits as the optimization objective,the capacity configuration of the photovoltaic and light hydrocarbon gas combined system is optimized.Considering each constraint condition in this system on the basis of simulation through constructing model,using the adaptive weighting and introducing the learning factor selection of the improved particle swarm algorithm.At the same time in order to solve the traditional penalty function method in the treatment of constraints problem of penalty value determined,and the variation of the penalty value along with the constraints and dynamic correction of multistage punishment function method will be constrained problem into unconstrained problem.The improved particle swarm optimization algorithm is used to solve the simulation results under different weight coefficients.While considering the economic cost and benefit,the optimal economic result brought by the reasonable capacity allocation is obtained.Finally,this paper establishes the economic model of system operation optimization,focusing on the discussion of natural gas and light hydrocarbon gas after respectively put into the system operation.After operation optimization,the system gets the results of the two kinds of fuel in the annual cost function and annual income function.Through comparison,it can be seen that the light hydrocarbon gas input into the system using the new gas production method can achieve the minimum energy consumption after reasonable operation optimization,which is about 40% lower than that of the traditional energy natural gas system.Therefore,this paper proves the goal of achieving near zero emission in the system.