高电压技术2017，Vol.43Issue(7)：2167-2174,8.DOI:10.13336/j.1003-6520.hve.20170628010
交直流同步电网异步分隔的一般性原则
General Principle of Asynchronous Segment for AC/DC Synchronous Power Systems
董桓锋 1徐政 1钱迎春 2司大军 2宋鹏程 1邢法财1
作者信息
- 1. 浙江大学电气工程学院,杭州310027
- 2. 云南电网有限责任公司电网规划研究中心,昆明650011
- 折叠
摘要
Abstract
With the successive commission of long-distance large-capacity DC transmission systems,the regional grid interconnections present new AC/DC hybrid interconnection characteristics of high voltage,long distance,wide area,and large capacity power exchange.First,we present three basic structures of DC links in regional power grid interconnections,and the outage of large capacity DC links is liable to cause angle instability of the two side AC systems.Then,we propose AC transmission corridor strength index,AC/DC transmission corridor strength ratio index,and AC transmission corridor efficiency index from the aspects of power system security and transmission economy efficiency,which is able to represent the AC transmission capacity,strong DC weak AC degree,and AC corridor efficiency quantitatively.Finally,the indexes are utilized in the four-province grid synchronously interconnected case of South China Grid in 2030.It is indicated that the Yunnan sending corridor is a typical strong-DC weak-AC transmission corridor,and the transient stability margin and AC transmission corridor efficiency index are low.It is recommended to unite the AC corridors,and the N-1 and N-2 transient simulation results also verify the above calculated results.关键词
区域电网互联/交流通道强度/交直流通道强度比/交流通道效用指标/异步分隔原则Key words
regional grid interconnection/AC transmission corridor strength/AC/DC transmission corridor strength ratio/AC transmission corridor efficiency index/asynchronous segment principle引用本文复制引用
董桓锋,徐政,钱迎春,司大军,宋鹏程,邢法财..交直流同步电网异步分隔的一般性原则[J].高电压技术,2017,43(7):2167-2174,8.
