广播电视微波数字化设备的技术探讨与研究.pdf

2011 年第 5 卷第 1 期南方电网技术实践与经验
2011,Vol. 5,No. 1 SOUTHERN POWER SYSTEM TECHNOLOGY Practice & Experience
文章编号:1674-0629(2011)01-0090-05 中图分类号:TM721 文献标志码:B
广东电网限制短路电流措施探讨
蔡广林,曹华珍
(广东电网公司,广州 510600)

摘要:随着系统容量的不断增大,广东电网结构日趋紧密,在满足负荷快速增长和可靠供电需求同时,电网的短路电流
水平的迅速提高严重威胁着电网的安全稳定运行。结合目前国内外限制短路电流措施研究及应用情况,对广东电网可能
采取的限制短路电流措施进行了探讨,结论为:对 220 kV 层级可采用分区供电作为限制短路电流水平的有效手段,对
500 kV 层级电网则以调整网架结构和局部分区供电为主要措施,部分地区可采用故障电流限制器等辅助措施。
关键词:电网;短路电流;限制措施

Study on the Short-Circuit Current Limiting Measures in
Guangdong Power Grid
CAI Guanglin , CAO Huazhen
(Guangdong Power Grid Corporation , Guangzhou 510600, China)

Abstract: As the capacity of Guangdong Power Grid (GPG) increases constantly, its structure es more and plex so
that the challenge of the grid’s security and stability also es greater due to the quickly increase of short-circuit current while the
grid meets the increasing demand of load and the need of reliable supply. Taking the researches and applications of limiting measures
of short-circuit current across the world as reference, this paper discusses the possible limiting measures for GPG, resulting in a
conclusion that adopting subarea power supply is an effective measure for works of 220 kV voltage level, and adjusting
network structure as well as adopting subarea power supply are mainly for 500 kV level, and deploying fault current limiter