| 引用本文: | 张林,沈钟浩,冯丽,等.基于直流灵敏度法的川渝电网输电能力受限成因研究[J].电力系统保护与控制,2015,43(18):67-73.[点击复制] |
| ZHANG Lin,SHEN Zhonghao,FENG Li,et al.Study on causes of limited transmission capacity of Sichuan-Chongqing powergrid based on DC-sensitivity[J].Power System Protection and Control,2015,43(18):67-73[点击复制] |
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| 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。 |
| 关键词: 互联电网 输电能力 联络线 灵敏度分析法 网络简化 |
| DOI：10.7667/j.issn.1674-3415.2015.18.012 |
| 投稿时间：2014-11-25修订日期：2015-01-20 |
| 基金项目:国网重庆市电力公司2014年科技项目(2014渝电科技21#) |
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| Study on causes of limited transmission capacity of Sichuan-Chongqing powergrid based on DC-sensitivity |
| ZHANG Lin,SHEN Zhonghao,FENG Li,SHANG Xuewei,ZHAO Lin,SHI Chenggang,ZHAI Yong |
| (State Grid Chongqing Electric Power Company, Chongqing 400015, China;School of Electrical Engineering, Dalian University of Technology,
Dalian 116024, China;Beijing Ke Dong Electric Power Control System Co., Ltd., Beijing 100192, China) |
| Abstract: |
| 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. |
| Key words: interconnected power grid transmission capacity tie line sensitivity analysis network simplification |
