考虑信息失效的有源配电网两阶段随机性控制方法  

Two-stage Stochastic Control Method for Active Distribution Network Considering Information Failure

作　　者：张希弘 赵奇 陈中[1] 田江 杜璞良 邢强 ZHANG Xihong;ZHAO Qi;CHEN Zhong;TIAN Jiang;DU Puliang;XING Qiang(School of Electrical Engineering,Southeast University,Nanjing 210096,China;Suzhou Power Supply Company,State Grid Jiangsu Electric Power Co.,Ltd.,Suzhou 215004,China)

机构地区：[1]东南大学电气工程学院,江苏省南京市210096 [2]国网江苏省电力有限公司苏州供电分公司,江苏省苏州市215004

出　　处：《电力系统自动化》2021年第20期67-75,共9页Automation of Electric Power Systems

基　　金：国家电网公司科技项目(支撑能源变革发展的多元多时空主动协调控制技术研究及应用,SGJSSZ00FCJS1902071)。

摘　　要：信息系统数据传输的延迟、丢包及误码将会导致配电网控制中心采集到的信息偏离真实值,为此提出一种在信息物理系统下考虑配电网信息失效的多场景两阶段随机性控制方法。首先,将趋势优化周期内各采样点的数据及预测值基于可能产生的信息失效情况离散为不同的场景集,并以总成本最小为目标运用随机性模型预测控制对周期内的各场景进行实时滚动优化,协调各分布式能源的出力。其次,在更短的实时修正周期内根据可调度能力进行精细化协调,进一步减轻信息失效对配电网的影响。最后,在改进的IEEE 33节点配电网中验证了所提方法在考虑信息失效时可有效提高配电网协调优化的安全性和经济性,并分析了不同信息失效情况下的差异性和灵敏度。Delay, packet loss and error codes of data transmission in information systems will cause the information collected by the distribution network control center to deviate from the true value. Therefore, a multi-scenario two-stage stochastic control method is proposed, which considers the information failure of the distribution network in the cyber-physical system. Firstly, the data and predicted values of each sampling point in the trend optimization cycle are discretized into different scenario sets based on the information failure conditions that may occur. With the goal of minimizing the total cost, the stochastic model predictive control is used to perform real-time rolling optimization of each scenario in the cycle and coordinate the output of various distributed energy sources. Secondly, in a shorter real-time correction cycle, according to the fine coordination of dispatchable abilities, the impact of information failure on the distribution network can be further reduced. Finally, in the modified IEEE 33-node distribution network,it is verified that the proposed method can effectively improve the safety and economy of the coordination and optimization of the distribution network when information failure is considered, and the difference and sensitivity of different information failure situations are also analyzed.

关 键 词：信息失效 信息物理系统 随机模型预测控制 多场景分析 可调度能力 

分 类 号：TM73[电气工程—电力系统及自动化]