特高压交直流接入后电网断面潮流综合评价方法  

A comprehensive power flow evaluation method for a transmission section with UHVAC/DC integration

作　　者：戴志辉[1] 王靖宇 潘星宇 滕正伟 秦梁栋 DAI Zhihui;WANG Jingyu;PAN Xingyu;TENG Zhengwei;QIN Liangdong(Department of Electrical Engineering,North China Electric Power University,Baoding 071003,China;State Grid Hebei Electric Power Co.,Shijiazhuang 050021,China)

机构地区：[1]华北电力大学电力工程系,河北保定071003 [2]国网河北省电力有限公司,河北石家庄050021

出　　处：《电力系统保护与控制》2020年第19期65-72,共8页Power System Protection and Control

基　　金：国家自然科学基金项目资助(51877084);河北省自然科学基金项目资助(E2018502063);国家电网有限公司科技项目资助(SGHEJY00GHJS1900023)。

摘　　要：为全面评价特高压交直流接入后电网断面的潮流状态,合理规划电网结构,提出一种基于层次分析法与扇形雷达图法的潮流综合评价方法。首先,从电网运行的安全性、经济性与潮流分布三方面选取5个独立性较强的指标参与综合评价,并对线路负载率、母线电压等指标进行了优化。其次,采用扇形雷达图法综合评估潮流指标总体水平与离散程度,可用于优选不同接入方案。最后,利用PSD-BPA进行了仿真验证,结果表明该方法有利于提高潮流评价的准确度和评价结果的合理性。To thoroughly evaluate power flows of the transmission section with UHVAC/DC integration,and thus appropriately plan the power grid structure,a comprehensive evaluation method of power flow based on the analytic hierarchy process and the fan-shaped radar chart method is proposed.First,five independent indices in terms of system operation safety,economy and power flow distribution are selected during the comprehensive evaluation.The line-load rate,bus voltage and other indices are then optimized.Secondly,the fan-shaped radar chart method is used to assess the overall level and dispersion degree of the evaluation results,which can be employed to select optimal UHVAC/DC integration schemes.Finally,simulation verification is implemented via PSD-BPA.The results indicate that the method is helpful in improving the accuracy of power flow evaluation and the rationality of the evaluation results.

关 键 词：特高压交直流 潮流综合评价方法 层次分析法 扇形雷达图法 安全性 经济性 

分 类 号：TM721.1[电气工程—电力系统及自动化]