应对大功率缺失的分-省协调实时调度模型
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摘要
针对大功率交直流联络线故障将导致受端电网大规模功率缺失,而省域电网内部分机组由省级电网调度,另一部分由区域分中心调度等问题,研究分-省两级电网调度中心实时发电计划协调调整策略。首先建立了省调机组/直调机组有功调整量分配模型和出力跟踪校验模型。针对省调机组/直调机组可能无法完全跟踪分配到的有功调整量的情况,进一步提出了省调机组/直调机组有功协调策略及出力校正模型,形成了一套适用于省域电网大功率缺失场景的省调机组/直调机组实时发电计划协调编制方法。仿真结果表明,与常规实时调度方法相比,该方法有助于快速恢复省域电网大功率缺失后的有功平衡。
Failure of high-power AC/DC tie-line will lead to large-scale power loss in the receiving-end power grid, and a part of the provincial units are dispatched by the provincial power grid(P-Units), the other part is dispatched by the regional grid(R-Units). In view of the above problems, the coordinated adjustment strategy of real-time generation plan for regional and provincial dispatching units is studied. Firstly, the models for the allocation of active power adjustment and output tracking between P-Units and R-Units are constructed. For the cases that P-Units or R-Units might not be able to track the allocated active power adjustment, a coordination strategy for active power of P-Units and R-Units is proposed, followed by an output correction model. Together, a set of real-time scheduling methods coordinated P-Units and R-Units which are suitable for provincial power grid under large power loss are formed. Simulation result shows that compared with conventional real-time scheduling method, the proposed method is conducive to fast recovery of provincial grid active power balance after large-scale power loss.
Failure of high-power AC/DC tie-line will lead to large-scale power loss in the receiving-end power grid, and a part of the provincial units are dispatched by the provincial power grid(P-Units), the other part is dispatched by the regional grid(R-Units). In view of the above problems, the coordinated adjustment strategy of real-time generation plan for regional and provincial dispatching units is studied. Firstly, the models for the allocation of active power adjustment and output tracking between P-Units and R-Units are constructed. For the cases that P-Units or R-Units might not be able to track the allocated active power adjustment, a coordination strategy for active power of P-Units and R-Units is proposed, followed by an output correction model. Together, a set of real-time scheduling methods coordinated P-Units and R-Units which are suitable for provincial power grid under large power loss are formed. Simulation result shows that compared with conventional real-time scheduling method, the proposed method is conducive to fast recovery of provincial grid active power balance after large-scale power loss.
引文
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[17]丁恰,孙骁强,张彦涛,等.网省紧耦合电网实时发电计划优化模型及应用[J].电网与清洁能源,2015,31(12):83-88,95.DING Qia,SUN Xiaoqiang,ZHANG Yantao,et al.Real-time generation scheduling optimization model and its application in tightly coupled regional and provincial power grid[J].Power System and Clean Energy,2015,31(12):83-88,95.
[18]许丹,葛睿,蔡帜,等.应对大规模功率缺失的区域电网日内发电计划优化调整方法[J].电力系统自动化,2017,41(7):68-73.XU Dan,GE Rui,CAI Zhi,et al.Optimization and adjustment method for intraday generation scheduling of regional power grid considering large-scale power loss[J].Automation of Electric Power Systems,2017,41(7):68-73.
[19]王莹,刘兵,刘天斌,等.特高压直流闭锁后省间紧急功率支援的协调优化调度策略[J].中国电机工程学报,2015,35(11):2695-2702.WANG Ying,LIU Bing,LIU Tianbin,et al.Coordinated optimal dispatching of emergency power support among provinces after UHVDC transmission system block fault[J].Proceedings of the CSEE,2015,35(11):2695-2702.
[20]邵世圻,戴赛,胡林献,等.计及热网特性的电热联合系统调度方法[J].电力系统保护与控制,2018,46(10):24-30.SHAO Shiqi,DAI Sai,HU Linxian,et al.Research on heat-electricity combined scheduling method considering the characteristics of the heating network[J].Power System Protection and Control,2018,46(10):24-30.
[2]刘振亚,张启平,董存,等.通过特高压直流实现大型能源基地风、光、火电力大规模高效率安全外送研究[J].中国电机工程学报,2014,34(16):2513-2522.LIU Zhenya,ZHANG Qiping,DONG Cun,et al.Efficient and security transmission of wind,photovoltaic and thermal power of large-scale energy resource bases through UHVDCprojects[J].Proceedings of the CSEE,2014,34(16):2513-2522.
[3]刘克俭,王铁强,时珉,等.大规模直购电下基于让渡价格的日前发电计划研究[J].电力系统保护与控制,2017,45(22):28-33.LIU Kejian,WANG Tieqiang,SHI Min,et al.Research of day-ahead generation plan based on assignment price under consumers’direct-purchasing electricity[J].Power System Protection and Control,2017,45(22):28-33.
[4]张新松,礼晓飞,王运,等.不确定性环境下考虑弃风的电力系统日前调度[J].电力系统保护与控制,2015,43(24):75-82.ZHANG Xinsong,LI Xiaofei,WANG Yun,et al.Day-ahead dispatching in consideration of wind power curtailments in uncertain environments[J].Power System Protection and Control,2015,43(24):75-82.
[5]邓佳乐,胡林献,邵世圻,等.电热联合系统多时间尺度滚动调度策略[J].电网技术,2016,40(12):3796-3803.DENG Jiale,HU Linxian,SHAO Shiqi,et al.Multi-time scale rolling scheduling method for combined heat and power system[J].Power System Technology,2016,40(12):3796-3803.
[6]宋卓然,赵琳,张子信,等.热电联产与风电机组联合运行滚动优化调度模型[J].电力系统保护与控制,2016,44(24):110-116.SONG Zhuoran,ZHAO Lin,ZHANG Zixin,et al.Rolling optimal model for multiple heating source and wind turbine unit[J].Power System Protection and Control,2016,44(24):110-116.
[7]杨冬锋,周苏荃,魏剑啸,等.基于MPC的超短期优化调度策略研究[J].电力系统保护与控制,2015,43(11):21-26.YANG Dongfeng,ZHOU Suquan,WEI Jianxiao,et al.Ultra-short term optimal dispatch method based on MPC[J].Power System Protection and Control,2015,43(11):21-26.
[8]杨明,程凤璐,韩学山.电力系统实时调度的有效静态安全域法[J].中国电机工程学报,2015,35(6):1353-1362.YANG Ming,CHENG Fenglu,HAN Xueshan.Real-time dispatch based on effective steady-state security regions of power system[J].Proceedings of the CSEE,2015,35(6):1353-1362.
[9]于丹文,杨明,韩学山,等.计及风电概率分布特征的鲁棒实时调度方法[J].中国电机工程学报,2017,37(3):727-738.YU Danwen,YANG Ming,HAN Xueshan,et al.Robust real-time dispatch considering probabilistic distribution of wind generation[J].Proceedings of the CSEE,2017,37(3):727-738.
[10]郭永明,李仲昌,尤小虎,等.计及备用容量优化配置的风火联合随机经济调度模型[J].电力系统保护与控制,2016,44(24):31-36.GUO Yongming,LI Zhongchang,YOU Xiaohu,et al.Stochastic economic dispatch model for joint delivery of wind power and thermal power generation system considering optimal scheduling of reserve capacity[J].Power System Protection and Control,2016,44(24):31-36.
[11]颜伟,王聪,毛艳丽,等.基于OPF的互联电网AGC优化模型[J].电力系统保护与控制,2015,43(23):35-40.YAN Wei,WANG Cong,MAO Yanli,et al.AGC optimal model based on OPF technology for interconnected power grid[J].Power System Protection and Control,2015,43(23):35-40.
[12]李金龙,袁贵川,周剑,等.基于特高压功率与电网频率偏差的省级电网AGC复合闭锁策略研究[J].电力系统保护与控制,2017,45(24):108-114.LI Jinlong,YUAN Guichuan,ZHOU Jian,et al.Composite locking strategy of provincial power grid AGC system based on UHV power deviation and frequency offset[J].Power System Protection and Control,2017,45(24):108-114.
[13]谭涛,姜杰,何潜,等.省级电网AGC控制策略研究[J].电力系统保护与控制,2011,39(16):63-66.TAN Tao,JIANG Jie,HE Qian,et al.Research on provincial power grid AGC control strategy[J].Power System Protection and Control,2011,39(16):63-66.
[14]郭晓蕊,王珂,杨胜春,等.计及风电时空互补特性的互联电网有功调度与控制方案[J].电力系统保护与控制,2014,42(21):139-144.GUO Xiaorui,WANG Ke,YANG Shengchun,et al.Active power scheduling and control scheme for interconnected power grids considering time-space complementary characteristics of wind energy[J].Power System Protection and Control,2014,42(21):139-144.
[15]许丹,蔡帜,李晓磊,等.基于约束调整的多级计划协调模型[J].电力系统自动化,2015,39(1):147-150.XU Dan,CAI Zhi,LI Xiaolei,et al.Multi-level coordination plan model based on constrained adjustment[J].Automation of Electric Power Systems,2015,39(1):147-150.
[16]张彦涛,任景,孙骁强,等.基于广义联络线网省协调的两阶段实时发电计划模型[J].电力系统自动化,2015,39(6):128-133,151.ZHANG Yantao,REN Jing,SUN Xiaoqiang,et al.Two-stage real-time generation scheduling model based on coordination of regional and provincial power grid generalized tie-line[J].Automation of Electric Power System,2015,39(6):128-133,151.
[17]丁恰,孙骁强,张彦涛,等.网省紧耦合电网实时发电计划优化模型及应用[J].电网与清洁能源,2015,31(12):83-88,95.DING Qia,SUN Xiaoqiang,ZHANG Yantao,et al.Real-time generation scheduling optimization model and its application in tightly coupled regional and provincial power grid[J].Power System and Clean Energy,2015,31(12):83-88,95.
[18]许丹,葛睿,蔡帜,等.应对大规模功率缺失的区域电网日内发电计划优化调整方法[J].电力系统自动化,2017,41(7):68-73.XU Dan,GE Rui,CAI Zhi,et al.Optimization and adjustment method for intraday generation scheduling of regional power grid considering large-scale power loss[J].Automation of Electric Power Systems,2017,41(7):68-73.
[19]王莹,刘兵,刘天斌,等.特高压直流闭锁后省间紧急功率支援的协调优化调度策略[J].中国电机工程学报,2015,35(11):2695-2702.WANG Ying,LIU Bing,LIU Tianbin,et al.Coordinated optimal dispatching of emergency power support among provinces after UHVDC transmission system block fault[J].Proceedings of the CSEE,2015,35(11):2695-2702.
[20]邵世圻,戴赛,胡林献,等.计及热网特性的电热联合系统调度方法[J].电力系统保护与控制,2018,46(10):24-30.SHAO Shiqi,DAI Sai,HU Linxian,et al.Research on heat-electricity combined scheduling method considering the characteristics of the heating network[J].Power System Protection and Control,2018,46(10):24-30.