Transport Of Coal Or Electricity?Optimization Research On The Linear Programming Model

Electronic industry is fundamental to the people’s livelihood, and it supports forthe whole economy in our country fundamentally. With the electricity marketization,monopoly position of the electricity in our country needs to be changed quickly. Thetraiitional vertical integration of state-owned monopoly management mode in thelinkc of power generation,transmission and distribution, inhibited the development ofthe national economy, increased the cost of electronical industry and electronicalconsumers, which reduced the overall economic benefits.Coal is the main energy togenerate electricity, whose demand increases as the electric’s demand. Meanwhile,asthe coal is irrefragable, which supply in the future will reduce. So, studying thequestion coal conveying or transmission in each province in the background ofelectricity marketization, and how to optimize the thermal power supply and electricalcoal demand is becoming significant. Current studies on electrical coal most focus onthe supply-demand present situation or supply chain, they study the front-end supplyoptimization. And there are few study focusing on the demand side and building theoptimized model for electrical coal’s demand.This study, taking the electricity marketization into premise, objecting to thedemand of electrical coal of each province, with the aid of the linear programmingmodel, aiming at minimum electric cost in the whole society, taking the equilibriumof the supply and demand of thermal coal and grid transmission capacity betweeneach province as the constraint conditions, building up the optimization model ofelectrical coal demand. This model is analyzed by data collection and index analysis,the ground electricity price and its components of each province were acquired, sowere the thermal power which supplied under restrictions of installed capacity andcarbon emissions with power production of each province, the national power griddistribution network and its transmission capacity, and, the main supply area and itsinterregional distribution amount of "green electricity". In addition, this study,optimize the electrical coal’s demand of each province scenario analysis respectively,under three kinds of situations that changing the amount of carbon emissions limits,the power grid transmission capacity and the "green electricity" throughput.This paper optimized the thermal power supply all over the country provinces,the electrical coal demand and the provincial electric power distribution. Theoptimization results show that:(1) province which unnecessary supply the thermal power production but to its power is GAN;(2) provinces which need to reduce powergeneration and then send to its are JI, HEI, HU, SU, ZHE, LU, YU, XIANG, CHUAN,YUE;(3) province only need to reduce power generation is E;(4) provinces whichincrease power generation appropriatly to satisfy with its demand are QING, JIANG;(5) provinces which need to increase the power and still need to send are JING, JIN,LIAO, GAN, YU;(6) provinces which need to increase power and send to otherprovinces are JI, JIN, MENG, WAN, FU, GUI, QIONG, GUI, YUN, SHAN, NING.Optimization results of scenario analysis show that:(1) When the thermal powersupply of eastern provinces decreases, reduce its amount of coal, increase the thermalcoal supply to the central and western provinces which supply the electricity to former;(2) When adding line transmission capacity, the possibility of the buyers getelectricity from the supplier whose ground price is lower is bigger, increase the coalsupply to this power supply province at this time, make it more to supply more powerto the demand side.(3) When increase the "green power" throughput, part is reducedthermal power transmission capacity correspondingly, prompting to the demand sidegetting more electricity from the supply side, increase the electricial coal supply to thesupply province.Meanwhile, this paper gives the optimization suggestions about national powergrid planning.Thermal power supply base in China are respectively, MENG,JI andJIN, SHAN, GUI, QING and NING these five areas, Hubei is main hydroelectricsupply base. This paper also gives suggestions about new and expansion of powertransmission line, and its capacity which unit is10billion kWh. New powertransmission lines are:①MENG264HEI;②MENG25JI;③JIN1176SU;④SHAN444XIANG;⑤GUI650GUI;⑥NING231GAN. Expansion of power transmissionlines are:①MENG565JING;②MENG2193LU;③SHAN443YU;④GUI755YUE.In this paper, by buiding up optimization model of the electrical coal’s demandunder the electricity marketization, we can get the optimizated thermal supply and theelectrical coal’s demand in each province, we can also answer the question whichprovince to deliver coal or electricity. Optimization results verify the feasibility of themodel and reality anastomotic. And through the scenario analysis, this paper givessome suggestions, that is, to further increase the power market reform, to improve theinter-provincial power transmission capacity, and to accelerate the construction of"green electricity" project. This research also shed lights on the coal market reform,supply strategy design and clean energy provision in China.