基于特征时段提取的月度发电计划与安全校核模型
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摘要
针对月度发电计划编制的高维度、大规模优化问题,提出基于局部最小偏差的分段线性化方法,提取负荷等发用电曲线的特征时段,大幅缩减了计算规模。考虑市场化改革下中长期电量调控的刚性转变对月度发、输电量校核和调整的要求,提出电力电量解耦的发电计划和安全校核模型。模型中引入输电通道的传输电量做为决策变量,评估了输电通道输送能力需求,校核了月度电量能否满足交易执行和电网运行的要求,实现了月度发电计划优化与电力电量安全校核的一体化建模和求解。通过建立输电通道与机组负荷的网络特性约束,保证了输电通道传输电量求解的合理性。IEEE 118节点系统的仿真分析验证了所提模型和算法的有效性。
In view of high dimension and large scale optimization of monthly generation scheduling, a piecewise linearization method based on local minimum deviation is proposed, extracting characteristic time periods of load and other power curves to significantly decrease model scale. Considering strengthened rigid requirement of dispatch control of medium-long term electric energy in power market reform, a monthly generation scheduling and security correction model is developed with power-energy decoupling. In the model, transmission energy is introduced as decision variable evaluating transmission capacity requirements of transmission channel. Based on this, monthly electric energy is checked whether requirements of transaction execution and power grid operation are satisfied, thus integrated modeling and solving for monthly generation schedule optimization and security correction is realized. Network performance constraints among generating units, load and transmission channel ensure rationality of transmission energy solution on transmission channels. Simulation in IEEE 118-bus system demonstrates effectiveness of the proposed model and algorithm.
In view of high dimension and large scale optimization of monthly generation scheduling, a piecewise linearization method based on local minimum deviation is proposed, extracting characteristic time periods of load and other power curves to significantly decrease model scale. Considering strengthened rigid requirement of dispatch control of medium-long term electric energy in power market reform, a monthly generation scheduling and security correction model is developed with power-energy decoupling. In the model, transmission energy is introduced as decision variable evaluating transmission capacity requirements of transmission channel. Based on this, monthly electric energy is checked whether requirements of transaction execution and power grid operation are satisfied, thus integrated modeling and solving for monthly generation schedule optimization and security correction is realized. Network performance constraints among generating units, load and transmission channel ensure rationality of transmission energy solution on transmission channels. Simulation in IEEE 118-bus system demonstrates effectiveness of the proposed model and algorithm.
引文
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[14]毛毅,车文妍.兼顾节能与经济效益的月度发电计划模型[J].现代电力,2008,25(5):73-78.Mao Yi,Che Wenyan.Monthly generation scheduling considering energy-saving and economic benefit[J].Modern Electric Power,2008,25(5):73-78(in Chinese).
[15]Attneave F.Some informational aspects of visual perception[J].Psychological Review,1954,61(3):183-193.
[16]张栋海,黄丽娜,费立凡,等.一种基于曲率法的曲线特征点选取方法[J].测绘科学,2013,38(3):151-153.Zhang Donghai,Huang Lina,Fei Lifan,et a1.An algorithm of extracting feature points in curve based on the curvature[J].Science of Surveying and Mapping,2013,38(3):151-153(in Chinese).
[17]Frangioni A,Gentile C,Lacalandra F.Tighter approximated MILP formulations for unit commitment problems[J].IEEE Transactions on Power Systems,2009,24(1):105-113.
[18]Miguel C,Jose M.A computationally efficient mixed-integer linear formulation for the thermal unit commitment problem[J].IEEE Transactions on Power Systems,2006,21(3):1371-1378.
[19]邓俊,韦化,黎静华.考虑电量可实现性和启停功率轨迹的火电机组组合混合整数线性规划模型[J].电网技术,2015,39(10):2882-2888.Deng Jun,Wei Hua,Li Jinghua.An MILP model for the thermal unit commitment problem with feasible energy delivery and start-up&shut-down power trajectories[J].Power System Technology,2015,39(10):2882-2888(in Chinese).
[20]周明,夏澍,李琰,等.含风电的电力系统月度机组组合和检修计划联合优化调度[J].中国电机工程学报,2015,35(7):1-10.Zhou Ming,Xia Shu,Li Yan,et a1.A joint optimization approach on monthly unit commitment and maintenance scheduling for wind power integrated power systems[J].Proceedings of the CSEE,2015,35(7):1-10(in Chinese).
[2]葛晓琳,舒隽,张粒子.考虑检修计划的中长期水火电联合优化调度方法[J].中国电机工程学报,2012,32(13):36-43.Ge Xiaolin,Shu Jun,Zhang Lizi.Mid-long term optimal dispatching method of hydro-thermal power system considering scheduled maintenance[J].Proceedings of the CSEE,2012,32(13):36-43(in Chinese).
[3]张炜,何光宇,王稹,等.水火联合电力系统中期经济调度系统的研究[J].电网技术,2002,26(10):6-9.Zhang Wei,He Guangyu,Wang Zhen,et a1.Research on medium-term economic scheduling system for hydro-thermal power system[J].Power System Technology,2002,26(10):6-9(in Chinese).
[4]雷雪姣,潘士娟,管晓宏,等.考虑传输安全裕度的电力系统发电经济调度[J].中国电机工程学报,2014,34(31):5651-5658.Lei Xuejiao,Pan Shijuan,Guan Xiaohong,et a1.Transmission safety margin constrained unit commitment in power systems[J].Proceedings of the CSEE,2014,34(31):5651-5658(in Chinese).
[5]李利利,管益斌,耿建,等.月度安全约束机组组合建模及求解[J].电力系统自动化,2011,35(12):27-31.Li Lili,Guan Yibin,Geng Jian,et a1.Modeling and solving for monthly security constrained unit commitment problem[J].Automation of Electric Power Systems,2011,35(12):27-31(in Chinese).
[6]颜伟,李翔,梁文举,等.基于负荷分段技术的多目标月度发电计划及其遗传算法[J].电力自动化设备,2013,33(10):47-52.Yan Wei,Li Xiang,Liang Wenju,et al.Multi-objective monthly generation scheduling based on load partition technology and its genetic algorithm[J].Electric Power Automation Equipment,2013,33(10):47-52(in Chinese).
[7]高宗和,耿建,张显,等.大规模系统月度机组组合和安全校核算法[J].电力系统自动化,2008,32(23):28-30.Gao Zonghe,Geng Jian,Zhang Xian,et a1.Monthly unit commitment and security assessment algorithm for large-scale power system[J].Automation of Electric Power Systems,2008,32(23):28-30(in Chinese).
[8]梁志飞,夏清,许洪强,等.基于多目标优化模型的省级电网月度发电计划[J].电网技术,2009,33(13):90-95.Liang Zhifei,Xia Qing,Xu Hongqiang,et a1.Monthly generation scheduling method based on multi-objective optimization model for provincial power grid[J].Power System Technology,2009,33(13):90-95(in Chinese).
[9]张粒子,陈之栩,舒隽,等.东北区域市场中长期交易安全校核改进方法[J].电力系统自动化,2007,31(8):95-99.Zhang Lizi,Chen Zhixu,Shu Jun,et a1.An improved security correction method for medium and long-term transaction of northeast electricity market[J].Automation of Electric Power Systems,2007,31(8):95-99(in Chinese).
[10]施磊,耿照为,张晶,等.风险适应型的月度发电计划管理模式[J].电网技术,2014,38(12):3384-3389.Shi Lei,Geng Zhaowei,Zhang Jing,et a1.Risk-adaptable monthly generation scheduling mode[J].Power System Technology,2014,38(12):3384-3389(in Chinese).
[11]田建芳,毛亚珊,翟桥柱,等.基于风电消纳能力评估的安全约束经济调度方法[J].电网技术,2015,39(9):2398-2403.Tian Jianfang,Mao Yashan,Zhai Qiaozhu,et a1.Security constrained unit commitment with wind power based on evaluation of wind power penetration capacity[J].Power System Technology,2015,39(9):2398-2403(in Chinese).
[12]张宁宇,高山,赵欣.一种考虑风电随机性的机组组合模型及其算法[J].电工技术学报,2013,28(5):22-29.Zhang Ningyu,Gao Shan,Zhao Xin.An unit commitment model and algorithm with randomness of wind power[J].Transactions of China Electrotechnical Society,2013,28(5):22-29.
[13]陈启鑫,康重庆,程旭东,等.考虑阻塞管理的发电权交易模型及其网络流算法[J].中国电机工程学报,2008,28(34):106-111.Chen Qixin,Kang Chongqing,Cheng Xudong,et a1.Generation rights trade model and its network flow algorithm considering congestion management[J].Proceedings of the CSEE,2008,28(34):106-111(in Chinese).
[14]毛毅,车文妍.兼顾节能与经济效益的月度发电计划模型[J].现代电力,2008,25(5):73-78.Mao Yi,Che Wenyan.Monthly generation scheduling considering energy-saving and economic benefit[J].Modern Electric Power,2008,25(5):73-78(in Chinese).
[15]Attneave F.Some informational aspects of visual perception[J].Psychological Review,1954,61(3):183-193.
[16]张栋海,黄丽娜,费立凡,等.一种基于曲率法的曲线特征点选取方法[J].测绘科学,2013,38(3):151-153.Zhang Donghai,Huang Lina,Fei Lifan,et a1.An algorithm of extracting feature points in curve based on the curvature[J].Science of Surveying and Mapping,2013,38(3):151-153(in Chinese).
[17]Frangioni A,Gentile C,Lacalandra F.Tighter approximated MILP formulations for unit commitment problems[J].IEEE Transactions on Power Systems,2009,24(1):105-113.
[18]Miguel C,Jose M.A computationally efficient mixed-integer linear formulation for the thermal unit commitment problem[J].IEEE Transactions on Power Systems,2006,21(3):1371-1378.
[19]邓俊,韦化,黎静华.考虑电量可实现性和启停功率轨迹的火电机组组合混合整数线性规划模型[J].电网技术,2015,39(10):2882-2888.Deng Jun,Wei Hua,Li Jinghua.An MILP model for the thermal unit commitment problem with feasible energy delivery and start-up&shut-down power trajectories[J].Power System Technology,2015,39(10):2882-2888(in Chinese).
[20]周明,夏澍,李琰,等.含风电的电力系统月度机组组合和检修计划联合优化调度[J].中国电机工程学报,2015,35(7):1-10.Zhou Ming,Xia Shu,Li Yan,et a1.A joint optimization approach on monthly unit commitment and maintenance scheduling for wind power integrated power systems[J].Proceedings of the CSEE,2015,35(7):1-10(in Chinese).