离散事件干扰下的城市中低压配电网触发调度  

Triggering scheduling of urban medium and low voltage distribution networks under discrete event interference

作　　者：周忠强 马建伟 梁铃 黄育松 文苑 ZHOU Zhongqiang;MA Jianwei;LIANG Ling;HUANG Yusong;WEN Yuan(Guizhou Power Grid Co.,Ltd.,Power Dispatching Control Center,Guizhou Guiyang 550000,China;Kaili Power Supply Bureau of Guizhou Power Grid Co.,Ltd,Guizhou Kaili 556000,China)

机构地区：[1]贵州电网有限责任公司电力调度控制中心,贵阳550000 [2]贵州电网有限责任公司凯里供电局,贵州凯里556000

出　　处：《自动化与仪器仪表》2024年第7期120-123,127,共5页Automation & Instrumentation

基　　金：贵州电网公司科技项目(GZNJBM20212014)。

摘　　要：城市中低压配电网是一个由不同小网组成的联合网络。随着联合配电网中外部电车充电、新能源接入等外部离散事件的增加,配电网络出力与负荷需求间的不平衡,会增加电网调度的延迟,当前研究缺乏足够准确和全面的离散事件准则制定,仅以固定事件的特定条件为调度约束,导致无法对离散事件干扰下配电调度更灵活、快速的进行准确判断和处理。设计一种适用于离散事件干扰条件下的城市中低压配电网调度方法。利用驱动求解算法根据配电网的离散事件状态准则设,置离散阈值,当外部连续变量超过离散阈值时触发调度条件,执行配电网络调度模型。在设计的调度模型中,以日前调度计划为基础,对联络开关和储能设备进行滚动调度。在日内滚动调度过程中,动态微调储能设备的功率,以实现配电网变流器的快速响应和最大灵活性。为了满足灵活调度要求并适应负荷波动,在设定调度的目标函数和约束条件前,根据当前情况进行负荷切改或线路开关调整,以实现中低压配电网的同步调度。经实验证明,研究方法能有效地实现中低压配电网的实时调度工作,方法鲁棒性好。The urban medium and low voltage distribution network is a joint network composed of different small networks.With the increase of external discrete events such as external tram charging and new energy access in the joint distribution network,the imbalance between the output and load demand of the distribution network will increase the delay of power grid scheduling.Current research lacks accurate and comprehensive discrete event criteria,only relying on specific conditions of fixed events as scheduling constraints,resulting in the inability to accurately judge and handle distribution scheduling more flexibly and quickly under the interference of discrete events.Design a scheduling method suitable for urban medium and low voltage distribution networks under discrete event interference conditions.Using a driving solution algorithm based on the discrete event state criteria of the distribution network,set a discrete threshold,and trigger scheduling conditions when external continuous variables exceed the discrete threshold to execute the distribution network scheduling model.In the designed scheduling model,the interconnection switch and energy storage equipment are subject to rolling scheduling based on the day ahead scheduling plan.During the daily rolling scheduling process,dynamically fine tune the power of the energy storage equipment to achieve fast response and maximum flexibility of the distribution network converter.In order to meet the requirements of flexible scheduling and adapt to load fluctuations,load shedding or line switch adjustment should be carried out according to the current situation before setting the objective function and constraint conditions for scheduling,in order to achieve synchronous scheduling of medium and low voltage distribution networks.Through experiments,it has been proven that the research method can effectively achieve real-time scheduling of medium and low voltage distribution networks,and the method has good robustness.

关 键 词：离散事件 中低压配电网 实时调度 调度模型 负荷变化 

分 类 号：TM732[电气工程—电力系统及自动化]