The Theories And Methods Of Interruptible Load Participating In Energy-saving Dispatching

Energy conservation and emissions reduction is one of the effectivemeasures to deal with energy crisis and environmental pollution. Electric powerindustry is mainly fossil energy consumption industry, which plays theimportant role in energy conservation and emissions reduction. Based on thedevelopment of the smart grid， interactive information technology and energystorage technology makes demand side load as dispatching resources which alsoparticipate in dispatching. The energy conservation and emissions reduction ofelectric power dispatching is confronted with new opportunities and challenges.In this paper, the research on theories and methods of interruptible loadparticipating in energy-saving dispatching from the Angle of energyconservation and emissions reduction, in combination with the characteristics ofthe electric power industry in our country. The detail working is as follows.First of all, this article introduced the interruptible load as dispatchingresources to participate in energy-saving power generation dispatching. Thepeak shaving and valley filling characteristics of interruptible load is utilized toimprove the energy-saving benefit of energy-saving power generationdispatching. Based on analysis of thermal power unit marginal and averageenergy consumption, the energy consumption characteristics of the thermalpower unit are introduced. On the basis of the analysis of the impact on theenergy-saving power generation dispatching of interruptible load, marginalenergy-saving index and comprehensive energy-saving index are proposed,which are used to assess the energy-saving potential of the load peak and theenergy-saving benefit of the whole interruptible load dispatching respectively.The energy-saving benefit evaluation process of interruptible load scheduling isalso given. Finally, the feasibility and effectiveness that IL dispatching as thesupplement of energy-saving generation dispatching to improve itsenergy-saving benefit, as well as the validity of the assessment method areverified by the simulation.Secondly, this paper presents the partial-independent optimizing thinkingto scheduling interruptible load dispatching plan. Based on the analysis of theenergy-saving potential evaluation in the second chapter, the preliminaryinterruption Load of peak load are determined, so that curve of interruptible load gap are set up and the problem of interruptible load dispatching isseparated. Extended priority list method based on matching degree andunit-balance cost constraints is proposed to solve the model of interruptible loaddispatching. To eliminate the gap between the actual load demand andenergy-saving power generation dispatching, the energy-saving powergeneration dispatching is revised according to of interruptible load dispatching.The feasibility and effectiveness of partial-independent optimizing thinking isverified by the simulation.Finally, on the analysis of the low carbon benefits of carbon capture powerplant influence on energy-saving power generation dispatching, the theory ofdifferential dispatching is put forward. The carbon capture power plants andconventional power plants are present high energy consumption and high carbonemission respectively in peak load period， and the reason have been given indetail in this paper. The method of scheduling interruptible load dispatchingwith the benefit of energy saving and low carbon is proposed. The exampleprove that the dispatching plan is both energy-saving and low-carbon.The theories and methods of interruptible load participating inenergy-saving dispatching are promoted in this paper. It is valuable to promoteenergy conservation and emissions reduction work of electric power industryand improve the economic benefit of power system operation.