基于机会维修的热电联产机组检修计划
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摘要
多能流耦合是综合能源系统的显著特点,当热电联产(combined heat and power,CHP)机组故障时,其影响会扩散传播到多个能源系统,因此,提高热电联产机组运行的可靠性非常重要。针对该问题,提出了一种基于机会维修的热电联产机组检修决策模型。首先,从机组供电和供热耦合机理出发,考虑不同设备间经济关联,推导了计及机会维修的热电联产机组供电和供热可用度表达式,在此基础上,为量化不同检修策略对系统运行的影响,综合考虑系统削减电负荷损失和热负荷损失,给出系统运行风险指标表达式,进一步,计及检修约束条件,建立热电联产机组检修决策模型。算例分析表明,所提模型能够提高热电联产机组运行的可靠性和系统整体效益。
Integrated energy system is composed of multiple energy systems. When a combined heat and power unit fails,more than one energy systems can be influenced. Therefore,it is very important to improve the reliability of CHP. In this paper,we propose a maintenance decision model for CHP based on opportunistic maintenance. Firstly,the expression of the availability of CHP considering opportunistic maintenance is derived. And then,in order to quantify the impact of different maintenance strategies on system operation,system operation risk is given,taking electric load loss and heat load loss into account. Finally,maintenance decision model of the CHP is established with maintenance constraints. The model is solved by genetic algorithm. Case studies show that the model can optimize CHP maintenance strategy and improve the reliability of CHP and the overall system efficiency.
Integrated energy system is composed of multiple energy systems. When a combined heat and power unit fails,more than one energy systems can be influenced. Therefore,it is very important to improve the reliability of CHP. In this paper,we propose a maintenance decision model for CHP based on opportunistic maintenance. Firstly,the expression of the availability of CHP considering opportunistic maintenance is derived. And then,in order to quantify the impact of different maintenance strategies on system operation,system operation risk is given,taking electric load loss and heat load loss into account. Finally,maintenance decision model of the CHP is established with maintenance constraints. The model is solved by genetic algorithm. Case studies show that the model can optimize CHP maintenance strategy and improve the reliability of CHP and the overall system efficiency.
引文
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[11]汲国强,吴文传,张伯明,等.一种适用于状态检修的电力设备时变停运模型[J].中国电机工程学报,2013,33(25):139-146.JI Guoqiang,WU Wenchuan,ZHANG Boming,et al. A timevarying component outage model for pow er system condition-based maintenance[J]. Proceedings of the CSEE,2013,33(25):139-146.
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[2]孙宏斌,潘昭光,郭庆来.多能流能量管理研究:挑战与展望[J].电力系统自动化,2016,40(15):1-8.SUN Hongbin,PAN Zhaoguan,GUO Qinglai. Energy management for multi-energy flow:Challenges and prospects[J]. Automation of Electric Pow er Systems,2016,40(15):1-8.
[3]贾宏杰,穆云飞,余晓丹.对我国综合能源系统发展的思考[J].电力建设,2015,36(1):16-25.JIA Hongjie, M U Yunfei, YU Xiaodan. Thought about the intergrated energy system in China[J]. Electric Pow er Construction,2015,36(1):16-25.
[4]吴建中.欧洲综合能源系统发展的驱动与现状[J].电力系统自动化,2016,40(5):1-7.WU Jianzhong. Drivers and state-of-the-art of integrated energy systems in Europe[J]. Automation of Electric Pow er Systems,2016,40(5):1-7.
[5]李更丰,别朝红,王睿豪,等.综合能源系统可靠性评估的研究现状及展望[J].高电压技术,2017,43(1):114-121.LI Gengfeng, BIE Zhaohong, WANG Ruihao, et al. Research status and prospects on reliability evaluation of integrated energy system[J]. High Voltage Engineering,2017,43(1):114-121.
[6] QI Y D,LIU Z G,SONG G M. CCHP and reliability of electricity supply[J]. Advanced M aterials Research, 2011, 250-253:3173-3176.
[7] WANG J J,FU C,YANG K,et al. Reliability and availability analysis of redundant BCHP(building cooling,heating and pow er)system[J]. Energy,2013,61(4):531-540.
[8] LI G F,BIE Z H,KOU Y,et al. Reliability evaluation of integrated energy systems based on smart agent communication[J]. Applied Energy,2016,167:397-406.
[9]丁一,江艺宝,宋永华,等.能源互联网风险评估研究综述(一):物理层面[J].中国电机工程学报,2016,36(14):3806-3816.DING Yi,JIANG Yibao,SONG Yonghua,et al. Review of risk assessment for energy internet, part I:Physical level[J].Proceedings of the CSEE,2016,36(14):3806-3816.
[10]徐波,韩学山,孙宏斌,等.一种适用于发电机组的机会维修模型[J].中国电机工程学报,2018,38(1):120-129.XU Bo,HAN Xueshan,SUN Hongbin,et al. A new opportunistic maintenance optimization model for pow er generating unit[J].Proceedings of the CSEE,2018,38(1):120-129.
[11]汲国强,吴文传,张伯明,等.一种适用于状态检修的电力设备时变停运模型[J].中国电机工程学报,2013,33(25):139-146.JI Guoqiang,WU Wenchuan,ZHANG Boming,et al. A timevarying component outage model for pow er system condition-based maintenance[J]. Proceedings of the CSEE,2013,33(25):139-146.
[12]曹晋华,程侃.可靠性数学引论[M]. 2版.北京:高等教育出版社,2012.
[13]于婧,孙宏斌,沈欣炜.考虑储热装置的风电-热电机组联合优化运行策略[J].电力自动化设备,2017,37(6):139-145.YU Jing,SUN Hongbin,SHEN Xinw ei. Optimal operating strategy of integrated pow er system w ith w ind farm,CHP unit and heat storage device[J]. Electric Pow er Automation Equipment,2017,37(6):139-145.