基于直流灵敏度法的川渝电网输电能力受限成因研究  

Study on causes of limited transmission capacity of Sichuan-Chongqing power grid based on DC-sensitivity

作　　者：张林[1] 沈钟浩 冯丽[1] 尚学伟 赵林 史成钢 翟勇 

机构地区：[1]国网重庆市电力公司调控中心系统运行处,重庆400015 [2]大连理工大学电气工程学院,辽宁大连116024 [3]北京科东电力控制系统有限责任公司,北京100192

出　　处：《电力系统保护与控制》2015年第18期67-73,共7页Power System Protection and Control

基　　金：国网重庆市电力公司2014年科技项目(2014渝电科技21#)

摘　　要：随着重庆负荷的快速增长,川渝电网输电通道输送能力需要提升,川渝联络线出现的分布严重不平衡问题也亟待解决。在对川渝鄂电网的潮流分布特征分析的基础上,采用直流灵敏度分析法,得到川渝电网系统关于川渝联络线的灵敏度关系,对出现的分布不平衡问题进行分析。针对与重庆电网联接的湖北电网,利用网络简化等效的思想对其做外部节点处理。结合川渝电网的实际情况,对包括重庆电源、负荷,四川电源、负荷,渝鄂联络线在内的关于川渝联络线的灵敏度值进行对比分析,得到受限原因,并且提出改善措施。With the rapid growth of the load in Chongqing, it is necessary to improve the transmission access＇s capacity of the grids in Sichuan and Chongqing, and is urgent to address the problem of extremely imbalanced distribution for Sichuan-Chongqing connection. This paper is based on distribution characteristics analysis of Sichuan Chongqing and Hubei grids＇ power flow, adopts DC-sensitivity analysis and achieves Sichuan-Chongqing power grid system on Sichuan-Chongqing line of contact sensitivity, and analyzes the imbalance issues. It handles the Hubei＇s grids jointed with the grids in Chongqing, as the external nodes by the simplified and equivalent network. According to the actual situation of Sichuan-Chongqing grids, the sensitivity of Chongqing-Sichuan connections is comparatively analyzed, including power and load of Chongqing and Sichuan as well as Chongqing-Hubei connections. Lastly, the causes for limitations are got and some improvements are put forward.

关 键 词：互联电网 输电能力 联络线 灵敏度分析法 网络简化 

分 类 号：TM711[电气工程—电力系统及自动化]