基于凸包算法的极端运行方式提取方法  

Extreme Operation Mode Extraction Method Based on Convex Hull Algorithm

作　　者：许彦平[1] 白婕 施浩波[1] 秦晓辉[1] 张彦涛[1] XU Yanping;BAI Jie;SHI Haobo;QIN Xiaohui;ZHANG Yantao(Power System Carbon Neutrality Research Center,China Electric Power Research Institute,Beijing 100192,China)

机构地区：[1]中国电力科学研究院电力系统碳中和研究中心,北京100192

出　　处：《中国电力》2024年第7期30-39,共10页Electric Power

基　　金：国家电网有限公司总部科技项目(考虑碳排放约束和复杂条件的新型电力系统中长期电力电量平衡机理和模型研究,5100-202155466A-0-0-00)。

摘　　要：在电力系统规划与运行的安全稳定计算中,一般选择对安全稳定最不利的运行方式进行校验,但随着新能源渗透率的增加,电网越发复杂多变,人工选择场景主观性较强,针对此问题,提出了一种基于快速凸包算法的极端运行方式提取,从而满足场景选取进行安全校核需求。从电源规划、发输电协调规划两个角度,考虑发电充裕性、火电爬坡需求、网络传输安全3个方面,分析影响规划的极端运行方式;基于凸包算法分别从上述3个方面构建坐标系进行极端运行方式提取;采用中国西北地区电网为算例进行极端运行方式提取,并与基于K-means算法的极端场景提取做对比,结果表明:所提方法能为场景选取提供有效数据支撑,满足电网规划要求。In the context of safety and stability calculation in power system planning and operation,the operation mode that is the most unfavorable to safety and stability is generally selected for verification.However,with the increase of new energy penetration,the power grid has become more complex and changeable,leading to a more subjective artificial selection scenario.To address this issue,this paper proposes an extreme scenario extraction method based on a rapid convex hull algorithm to meet the requirements of scenario selection for security verification.From the perspectives of power supply planning and generation-transmission coordination planning,the extreme operating modes affecting planning are analyzed,considering generation adequacy,thermal power ramping requirements,and network transmission security.Based on the convex hull algorithm,the coordination system is constructed from the above-mentioned three aspects to extract the extreme operation mode.The proposed method is applied to extract the extreme operation modes in the power grid of Northwest China.Compared with the extreme scenario extraction based on the K-means algorithm,the results demonstrate that the proposed method can provide effective data support for scenario selection and meet the requirements of power grid planning.

关 键 词：凸包算法 极端运行方式 电源规划 发输电协调规划 场景提取 

分 类 号：TM73[电气工程—电力系统及自动化]