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大电网调度自动巡航中经济运行域的构建方法
作者:
作者单位:

1.河海大学能源与电气学院,江苏省 南京市 210098;2.国网江苏省电力有限公司,江苏省 南京市 210024

作者简介:

通讯作者:

基金项目:

国家重点研发计划资助项目(2017YFB0902600);国家电网公司科技项目(SGJS0000DKJS1700840)。


Construction Method of Economic Operation Region in Automatic Cruise for Bulk Power Grid Dispatching
Author:
Affiliation:

1.College of Energy and Electrical Engineering, Hohai University, Nanjing 210098, China;2.State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210024, China

Fund Project:

This work is supported by National Key R&D Program of China (No. 2017YFB0902600) and State Grid Corporation of China (No. SGJS0000DKJS1700840).

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    摘要:

    经济运行域的构建是实现大电网调度自动巡航的第一步。文中将经济运行域定义为各种调度目标偏好下的所有日前安全约束最优发输电计划的集合。针对直流跨区互联大电网,以发电成本最小、碳排放最少和污染物排放最少等目标为例,构建了一体化多目标日前发输电计划模型。利用法线边界交叉法将该多目标优化问题转化为多个单目标优化问题,进而基于同步型交替方向乘子法构建送、受端电网分解协调模型,实现分布式求解。求解得到分布均匀的Pareto前沿面,即为经济运行域。对由2个IEEE 39节点系统改造的两区域直流互联系统进行仿真,验证了所提方法的有效性。

    Abstract:

    The construction of economic operation region (EOR) is the first step to realize automatic cruise function for bulk power grid dispatching. EOR is defined as the set of all optimal security-constrained day-ahead generation and transmission scheduling with various preferences for scheduling objectives. Then, this paper develops a centralized multi-objective model of day-ahead generation and transmission scheduling for inter-regional interconnected bulk power grid via HVDC tie-line, to minimize power generation cost, carbon emission and pollutant emission. The multi-objective optimization problem is transformed into a series of single-objective optimization problems by using the normal boundary intersection (NBI) method. And a decomposition-coordination model for sending and receiving power grids based on synchronous alternating direction method of multipliers (SADMM) is constructed for each single-objective optimization problem to realize distributed solution. Finally, a uniformly distributed Pareto frontier is obtained, which is the EOR. A two-area interconnected test system via HVDC tie-line modified from IEEE 39-bus system is utilized to verify the effectiveness of this method.

    表 1 Table 1
    图1 经济运行域示意图Fig.1 Schematic diagram of economy operation region
    图2 经济运行域的目标平面视图Fig.2 Visual diagram of economy operation region in objective plane
    图3 直流跨区互联电网分解示意图Fig.3 Decomposition of inter-regional interconnected power grid via HVDC tie-line
    图4 直流跨区互联电网发输电计划分布式计算流程图Fig.4 Flow chart of distributed calculation for generation and transmission scheduling of inter-regional interconnected power grid via HVDC tie-line
    图5 各区域的经济运行域视图Fig.5 Diagram of economy operation region in different areas
    图 两区域直流互联系统Fig. Two area interconnected system via HVDC tie-line
    图 A区域风电预测值Fig. Wind power forecast data in area A
    图 B区域风电预测值Fig. Wind power forecast data in area B
    图 区域A、B的日负荷曲线Fig. Daily load curve of area A and B
    图 SADMM残差收敛曲线Fig. Residual convergence curve of SADMM
    图 2种方法下的直流线路功率优化结果对比Fig. Comparison of DC tie line power calculated by centralized and distributed method
    图 2种方法生成的经济运行域对比Fig. Comparison of EOR by two methods
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引用本文

张逸康,赵晋泉,刘子文,等.大电网调度自动巡航中经济运行域的构建方法[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20191018003.
ZHANG Yikang,ZHAO Jinquan,LIU Ziwen,et al.Construction Method of Economic Operation Region in Automatic Cruise for Bulk Power Grid Dispatching[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20191018003.

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  • 收稿日期:2019-10-18
  • 最后修改日期:2020-03-16
  • 录用日期:2019-12-24
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