文章摘要
苗树敏,罗彬,刘本希,等.考虑经济性与可靠性的大小水电短期协调消纳模型[J].电力系统自动化,2018,42(8):101-109. DOI: 10.7500/AEPS20170903004.
MIAO Shumin,LUO Bin,LIU Benxi, et al.Short-term Coordination Model for Large and Small Hydropower Consumption Considering Economy and Reliability[J].Automation of Electric Power Systems,2018,42(8):101-109. DOI: 10.7500/AEPS20170903004.
考虑经济性与可靠性的大小水电短期协调消纳模型
Short-term Coordination Model for Large and Small Hydropower Consumption Considering Economy and Reliability
DOI:10.7500/AEPS20170903004
关键词: 小水电  大中型水电  协调消纳  可靠性
KeyWords: small hydropower  large and medium hydropower  coordinated consumption  reliability
上网日期:2018-03-14
基金项目:国家自然科学基金面上项目(51579029);中国博士后科学基金资助项目(2016M590225)
作者单位E-mail
苗树敏 大连理工大学水电与水信息研究所, 辽宁省大连市 116024  
罗彬 清华四川能源互联网研究院, 四川省成都市 610200 luobin1590@163.com 
刘本希 大连理工大学水电与水信息研究所, 辽宁省大连市 116024  
申建建 大连理工大学水电与水信息研究所, 辽宁省大连市 116024  
程春田 大连理工大学水电与水信息研究所, 辽宁省大连市 116024  
摘要:
      在多级输电断面限制的富水电地区,开展大小水电的协调调度是提高水电整体消纳量的重要举措,但同时大规模小水电的并网也给电网运行带来了风险。为此,文中构建了兼顾系统经济性和可靠性的大小水电协调消纳模型,从可消纳电量、网损和梯级蓄能三方面衡量系统的经济性,并引入电力不足概率评估系统可靠性。模型求解方面:为准确表征系统可靠性,基于实时运行状态进行评估,并采用蒙特卡洛模拟求解;然后,通过梯级负荷切分与再分配的组合原理生成可行初始解,并采用考虑约束容忍度的改进粒子群优化算法求解协调模型,提高了搜索效率。实际应用表明,该模型可有效利用梯级大中型水电的调节能力,协调地区小水电送出,提高系统运行可靠性和水电整体调度效益。
Abstract:
      In the rich-hydropower area with multi-level transmission section limit, the coordinated dispatch for large and small hydropower plants is significant for the overall consumption of hydropower. With large-scale small hydropower access to the power grid, however the problem for power grid security operation is more prominent. Therefore, this paper proposes a short-term coordination model for large and small hydropower consumption considering both the economy and reliability of power systems. The economy of power systems is measured from three aspects: hydropower consumption, power system loss and cascaded power storage. And the loss of load probability(LOLP)is introduced to evaluate the reliability of power systems. For the better description of reliability, the model is evaluated based on real-time state of power systems and simulated by the Monte Carlo method. Then the feasible initial solution is generated by the combined principle of cascaded load partitioning and redistribution, and the improved particle swarm optimization(PSO)algorithm considering constraint tolerance is used to solve the coordination model to improve the search efficiency. The practical application shows that the proposed model can effectively use the regulation potential of large and medium hydropower plants, coordinate the delivery of small hydropower plants in regions, and improve the power system reliability and the overall dispatch benefit of hydropower.
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