摘要
结合新疆电网规划发展,随着昌吉地区750 kV网架结构的延伸和大规模电源的建设,对比分析了新疆电网±1 100 kV(准东—皖南)特高压直流接入前后短路电流的增加原因与趋势。当±1 100 kV特高压直流接入昌吉五彩湾地区后,为了限制系统短路电流水平,文中从加装电抗、网架结构调整及运行方式安排等方面展开讨论分析,研究结果表明,在合理控制新疆五彩湾地区短路电流的水平下,750 kV五彩湾变电站的220 kV母线分列运行及附近大电源送出线路优化将有利于短路电流的有效控制,对解决新疆电网发展中昌吉五彩湾地区短路电流超标问题提供参考。
Based on the development of Xinjiang grid structure planning, with the extension of the 750 kV grid structure and the construction of large-scale power supply in Changji, it has compared and analyzed the short-circuit current increasing cause and trend when considering ±1 100 kV UHVDC connected to grid or not, where the UHVDC is start at Zhundong, and is end at Wanan. When ±1 100 kV UHVDC is connected to the district of Wucalwan area, Changji, in order to limit the level of system short-circuit current, it make discusses and analyzes from the aspects of installation reactance, grid structure adjustment and operation mode. The results show that the 750 kV Wucaiwan substation of 220 kV bus breakdown operation and the near high-capacity power outgoing line optimization will be conductive to the effective control for the short-circuit current control, under reasonable control short-circuit cur-rent level at Wucaiwan area. Then, during the development of Xinjiang grid structure, it provides a solution for the short circuit current exceed standard control at district of Wucaiwan area, Changji.
出处
《高压电器》
CAS
CSCD
北大核心
2016年第11期18-24,共7页
High Voltage Apparatus
基金
国家自然科学基金项目(51467019)~~
关键词
特高压直流
新疆电网
短路电流
限制措施
网架结构
运行方式
UHVDC
Xinjiang power grid
short-circuit current
limiting measures
grid structure
operation mode
