考虑输电断面耦合与直流稳定支撑的大电网最大供电能力评估方法  

Evaluation Method of Maximum Power Supply Capacity of Bulk Power Grid Considering Transmission Section Coupling and DC Stability Support

作　　者：汪旸 李群山 黄牧涛 曾令康 朱可凡 陈兴邦 WANG Yang;LI Qunshan;HUANG Mutao;ZENG Lingkang;ZHU Kefan;CHEN Xingbang(Central China Branch of State Grid Corporation of China,Wuhan 430077,Hubei Province,China;School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei Province,China)

机构地区：[1]国家电网有限公司华中分部,湖北省武汉市430077 [2]华中科技大学电气与电子工程学院,湖北省武汉市430074

出　　处：《电网技术》2025年第4期1524-1531,I0056,I0057,共10页Power System Technology

基　　金：国家电网有限公司科技项目(SGHZ0000DKJS2200330)。

摘　　要：随着我国特高压电网建设快速推进,交直流耦合关系愈加复杂,直流落点稳定支撑要求高,源网荷发展不同步,为了优化大电网的资源优化配置能力和提升电力保供水平,该文提出了考虑断面耦合与直流稳定支撑的大电网最大供电能力评估方法。首先,考虑电网供电能力最大,达到最大供电能力时留有一定的断面裕度和备用均匀地分布在全网,选取供电功率最大、最小断面裕度最大、备用留取最均衡3个目标函数,以备用容量约束、非断面耦合约束、断面耦合约束为约束条件建立大电网最大供电能力评估模型,模型采用规格化平面约束法求解,然后采用逼近理想解法筛选方案进而完成最大供电能力评估。最后,基于某省网数据开展算例分析,验证所提方法的有效性。With the rapid development of UHV power grid construction in China,the coupling relationship between AC and DC is becoming more and more complex,the stability support requirements of DC drop point are high,and the development of source-grid-load is not synchronized,In order to optimize the ability of resource distributing and improve the level of power supply,this paper proposes a method for evaluating the maximum power supply capacity of Ultra-high voltage power grid considering section coupling and DC stability support.Firstly,considering the maximum power supply capacity of the power grid,a certain section margin and reserve are evenly distributed in the whole power grid when the maximum power supply capacity is reached.The three objective functions of the maximum power supply,the maximum minimum section margin and the most balanced reserve are selected.The reserve capacity constraint,non-section coupling constraint and section coupling constraint are used as constraints to establish the maximum power supply capacity evaluation model of the ultra-high voltage power grid.The model is solved by the normalized normal constraints method,and then technique for order preference by similarity to ideal solution is used to select solution and complete the maximum power supply capacity evaluation.Based on the data of a province,this paper carries out an example analysis to illustrate the effectiveness of the proposed method.

关 键 词：大电网 最大供电能力 断面耦合 直流稳定要求 规格化平面约束法 

分 类 号：TM721[电气工程—电力系统及自动化]