广东电网区域负荷裕度分析  

Analysis on Regional Load Margin of Guangdong Power Grid

作　　者：张建设[1] 张尧[1] 武志刚[1] 吴小辰[2] 

机构地区：[1]华南理工大学电力学院,广东省广州市510640 [2]中国南方电网技术研究中心,广东省广州市510620

出　　处：《电网技术》2006年第6期30-34,共5页Power System Technology

基　　金：国家自然科学基金重点资助项目(50337010);高等学校博士学科点专项科研基金资助项目(20020561004)~~

摘　　要：运用区域负荷裕度判别法研究了2005年丰大基本运行方式下广东电网的静态电压稳定性,定义了区域有功负荷裕度指标,并就广东电网500kV交流线路N?1开断、直流系统停运对该指标的影响进行了敏感性分析。结果表明,区域负荷裕度适于作为静态电压稳定的安全指标;珠江三角洲重负荷区域和粤东地区负荷裕度小,是静态电压安全的薄弱区域;影响负荷裕度较大的关键线路是西电馈入广东的联络线以及沙鹏线、岭东线、东惠线;直流系统停运导致负荷裕度下降较大,其中贵广直流系统产生的影响最大,天广和三广直流系统次之。运行人员应重点监控以上薄弱区域和关键线路。By use of regional load margin analysis method the static voltage stability of Guangdong Power Grid （GDPG） under summer-heavy operation mode in 2005 is studied. The regional active load margin index is defined and the sensitivity analysis for the influence of N-1 outages of 500 kV AC transmission lines and the HVDC system outages on this index is carried out. Analysis results show that： （A） the regional load margin is suitable to be the security index for static voltage stability; （B） the load margins of the Pearl River Delta in GDPG with heavy load and eastern GDPG are small, therefore they are the weak region of voltage security; （C） the key transmission lines which mostly influence load margin are the tie-lines which feed power from Guangxi Power Grid to GDPG and the following transmission lines within GDPG： from Shajiao to Pengcheng, from Ling＇ao to Dongguan and from Dongguan to Huizhou; （D） the outages of HVDC system evidently decrease the load margin, in which the line from Guizhou to Guangdong plays a primary part and the line from Tianshengqiao to Guangdong and the one from Three Gorges to Guangdong play a secondary part. Therefore the operation personnel should pay special attention to the monitoring of above-mentioned key lines and weak regions.

关 键 词：电力系统 广东电网 静态电压稳定 电压稳定指标 区域负荷裕度 敏感性分析 

分 类 号：TM712[电气工程—电力系统及自动化]