发电厂接入特高压系统方式研究  

Study on the Connection Mode of Power Plant to UHV Power System

作　　者：赵良[1] 郭强[2] 宋云亭[2] 秦晓辉[2] 易俊[2] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区102206 [2]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2011年第3期94-97,共4页Power System Technology

基　　金：国家电网公司科学技术项目(SGKJ[2007]996)~~

摘　　要：重点分析发电厂采用特高压升压变的技术经济性。介绍特高压升压变的主要技术参数,分析特高压一级升压方式和二级升压方式对电源送出能力的影响。采用不同升压方式时,配合发变组组合方式,进行电源送出工程的投资比较,探讨提高工程经济性的措施。研究有助于合理确定电源送出工程方案,提高发电厂和电网的运行效益。对比分析表明,大型电源基地直接接入特高压输电系统,可提高特高压线路输电能力,电源开发达到较大规模时工程经济性更优。The techno-economic performance of adopting UHV step-up transformers in power plants is emphatically analyzed. Main technical parameters of UHV step-up transformer is presented; the influence of connecting power plant to power grid via the mode of UHV step-up transformer and that via traditional two-stage step-mode on sending-out ability of electricity resource are analyzed. According to the combination modes of generators and transformers, the investments for various power sending-out projects are compared, and the measures to improve engineering economical efficiency are investigated. Such a research contributes to determine the scheme for power sending-out project reasonably and improve the operation benefits of both power plants and power grid. Results of comparative analysis show that directly connecting large-scale electricity resource base to power grid can lift the transmission capability of UHV lines, and when the development of electricity resource achieves a larger scale, a better＇engineering economical efficiency can be attained.

关 键 词：特高压升压变 技术经济性 发电厂 电力系统 

分 类 号：TM72[电气工程—电力系统及自动化]