通道型核心主网解环方案的评估方法研究  

Studyon Study on Evaluation Method of De-ringing Scheme of Channel-type Core Main NetworkEvaluationMethodofDe-ringingSchemeofChannel-typeCoreMainNetwork

作　　者：李硕 张文朝 顾雪平[1] 李少岩[1] 邵冲 赵伯铉 LI Shuo;ZHANG Wengchao;GU Xueping;LI Shaoyan;SHAO Chong;ZHAO Boxuan(School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China;Beijing Kedong Power Control System Co.,Ltd.,Beijing 100192,China;State Grid Gansu Electric Power Company,Lanzhou 730030,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]北京科东电力控制系统有限责任公司,北京100192 [3]国网甘肃省电力公司,甘肃兰州730030

出　　处：《华北电力大学学报（自然科学版）》2024年第3期48-55,64,共9页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(52107092).

摘　　要：随着西北某省中东部核心环网两侧多个千万级能源基地的建设,负荷聚集的核心环网逐步演变为超千万千瓦的功率互济通道,成为核心环网与输电通道耦合的复杂型电磁环网。复杂型电磁环网承担着可靠供电与功率传输的作用,相比于普通环网有更多安全隐患和解环约束,为评估其解环方案,针对主网安全稳定性、供电可靠性、运行经济性,提出短路电流安全、N-1热稳裕度、负荷供电风险、通道传输能力、系统损耗、上下网功率均衡度六个解环评估指标。考虑到主、客观赋权法的优缺点和环网解环场景的实际需求,利用客观CRITIC法改进主观G1法,以主、客观权重差值最小为目标,建立模型求得最优综合权重。以该核心环网2023年的规划方案为例,验证了所提解环指标及评估方法的有效性。With the construction of several 10 million energy bases on both sides of the central-eastern core loop network of a provincial power network in northwest China,the core loop network with aggregated loads gradually evolves into a power mutual aid channel of over 10 million kilowatts and becomes a complex electromagnetic loop network coupled with transmission channels and core loop network.The complex network assumes the role of reliable power supply and power transmission,and has more safety hazards and open-loop constraints than the ordinary loop network.To evaluate the open-loop programs,six open-loop evaluation indexes were proposed for main network safety and stability,power supply reliability,and operation economy:short-circuit current safety,N-1 thermal stability margin,load power supply risk,channel transmission capacity,system loss,and upper and lower network power balance.Considering the advantages and disadvantages of the subjective and objective assignment methods and the actual demand of the loop network open-loop scenario,the objective CRITIC method was used to improve the subjective G1 method,and the model was established to find the optimal comprehensive weights with the objective of minimizing the difference between the subjective and objective weights.Finally,the planned system of the central-eastern core loop network in 2023 was used as an example to verify the effectiveness of the proposed open-loop index and evaluation method.

关 键 词：电磁环网 安全性 G1法 核心主网 方案评估 

分 类 号：TM72[电气工程—电力系统及自动化]