综合能源系统故障态经济性最优运行策略
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摘要
针对工厂提出了一种以多能转供为核心的综合能源系统故障态运行策略。首先,基于可测参数对各供能设备进行建模,建立了综合能源系统模型。而后提出了各类供能设备出现故障时最大供能能力计算方法,得到各设备出力约束条件,并建立冷热电多种能源的功率及能量平衡方程。进而以运行费用最低为优化目标,采用线性规划法对目标函数进行求解。最后以某工厂综合能源系统为算例,分析了不同故障条件下采用该策略后各设备出力变化的合理性,结果发现该策略具有3个特点:低负荷时运行成本控制效果显著;本策略调控效果主要受分时能源价格影响;最大外购资源曲线具有预测故障后成本变化趋势的作用。
A fault-state operation strategy for integrated energy systems based on multi-energy transfer was proposed.Firstly, an integrated energy system model was built to model each energy-supply device in the system using actual measurable parameters. Then, the calculation method of maximum energy supply capacity when energy-supply device fails was introduced, and the power constraint conditions of each equipment were obtained, and the power balance equations of cold/heat/electricity power were established. Then, set the lowest operating cost as the optimization goal, the objective function was solved by the linear programming method. Finally, taking a factory-level integrated energy system as an example, the rationality of the output changes of each equipment after using this strategy under several fault conditions was analyzed. It is pointed out that the strategy has three characteristics: the cost control effect is significant at low load situation, remarkably impacted by time-sharing energy prices, the outsourcing resource curve can predict the change of operating costs when fault occurs.
A fault-state operation strategy for integrated energy systems based on multi-energy transfer was proposed.Firstly, an integrated energy system model was built to model each energy-supply device in the system using actual measurable parameters. Then, the calculation method of maximum energy supply capacity when energy-supply device fails was introduced, and the power constraint conditions of each equipment were obtained, and the power balance equations of cold/heat/electricity power were established. Then, set the lowest operating cost as the optimization goal, the objective function was solved by the linear programming method. Finally, taking a factory-level integrated energy system as an example, the rationality of the output changes of each equipment after using this strategy under several fault conditions was analyzed. It is pointed out that the strategy has three characteristics: the cost control effect is significant at low load situation, remarkably impacted by time-sharing energy prices, the outsourcing resource curve can predict the change of operating costs when fault occurs.
引文
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[3]KAUR T,SEGAL R.Designing rural electrification solutions considering hybrid energy systems for papuanew guinea[J].Energy Procedia,2017(110):1-7.
[4]KANASEPATIL A B,SAINI R P,SHARMA M P.Sizing of integrated renewable energy system based on load profiles and reliability index for the state of Uttarakhand in India[J].Renewable Energy,2011,36(11):2809-2821.
[5]GUPTA A,SAINI R P,SHARMA M P.Steady-state modelling of hybrid energy system for off grid electrification of cluster of villages[J].Renewable Energy,2010,35(2):520-535.
[6]UPADHYAY S,SHARMA M P.A review on configurations,control and sizing methodologies of hybrid energy systems[J].Renewable&Sustainable Energy Reviews,2014,38(5):47-63.
[7]付小平,杨洪兴,安大伟.中央空调系统运行管理[M].北京:清华大学出版社,2001.FU X P,YANG H X,AN D W.Central air conditioning system operation management[M].Beijing:Tsinghua University Press,2001.
[8]戴永庆.溴化锂吸收式制冷技术及应用[M].北京:机械工业出版社,2000.DAI Y Q.Lithium bromide absorption refrigeration technology and its application[M].Beijing:Mechanical Industry Press,2000.
[9]辛广路.工业锅炉运行与节能减排操作实务[M].北京:机械工业出版社,2015.XIN G L.Practice of industrial boiler operation and energy saving and emission reduction operations[M].Beijing:Mechanical Industry Press,2015.
[10]董龙.热水采暖系统的供热故障分析[J].城市建设理论研究,2012(25).DONG L.Analysis of heating failure of hot water heating system[J].Urban Construction Theory Research,2012(25).
[11]李斌,何佳伟,冯亚东,等.多端柔性直流电网保护关键技术[J].电力系统自动化,2016,40(21):2-12.LI B,HE J W,FENG Y D,et al.Key technologies of multi-terminal flexible DC grid protection[J].Automation of Electric Power Systems,2016,40(21):2-12.
[12]严佳梅,许剑冰,倪明,等.通信系统中断对电网广域保护控制系统的影响[J].电力系统自动化,2016(5):17-24.YAN J M,XU J B,NI M,et al.Influence of communication system interruption on wide-area protection and control system of power grid[J].Automation of Electric Power Systems,2016(5):17-24.
[13]郭创新,朱传柏,曹一家,等.电力系统故障诊断的研究现状与发展趋势[J].电力系统自动化,2006,30(8):98-103.GUO C X,ZHU C B,CAO Y J,et al.Research status and development trend of power system fault diagnosis[J].Automation of Electric Power Systems,2006,30(8):98-103.
[14]刘健,倪建立,杜宇.配电网故障区段判断和隔离的统一矩阵算法[J].电力系统自动化,1999(1):31-33.LIU J,NI J L,DU Y.A unified matrix algorithm for fault segment judgment and isolation in distribution network[J].Automation of Electric Power Systems,1999(1):31-33.
[15]艾芊,郝然.多能互补、集成优化能源系统关键技术及挑战[J].电力系统自动化,2018(4):2-10.AI Q,HAO R.Key technologies and challenges of multi-energy complementary and integrated optimization of energy systems[J].Automation of Electric Power Systems,2018(4):2-10.
[16]姚杨,马最良.浅议热泵定义[J].暖通空调,2002,32(3):33.YAO Y,MA Z L.Discussion on heat pump definition[J].HVAC,2002,32(3):33.