1000kV变电站无功补偿装置接入中压侧方案研究及经济性评价  

Scheme Research and Economic Evaluation of Connecting Reactive Power Compensation Device to Medium Voltage Side in 1000kV Substation

作　　者：程临燕 郑兰 杨仁花 马翀 刘菲 朱芸 CHENG Linyan;ZHENG Lan;YANG Renhua;MA Chong;LIU Fei;ZHU Yun(North China Power Engineering Co.,Ltd.of China Power Engineering Consulting Group,Beijing 100120,China;State Grid Economic and Technological Research Institute Co.,Ltd.,Beijing 100120,China;Northwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Xi'an 710075,China)

机构地区：[1]中国电力工程顾问集团华北电力设计院有限公司,北京100011 [2]国网经济技术研究院有限公司,北京102209 [3]中国电力工程顾问集团西北电力设计院有限公司,陕西西安710075

出　　处：《电力勘测设计》2022年第12期24-28,58,共6页Electric Power Survey & Design

基　　金：国家电网有限公司科技项目“特高压交流变电站中压侧接入无功补偿装置技术方案研究”(5200-201956111A-0-0-00)。

摘　　要：针对1000 kV变电站主变压器低压侧无功分组多、占地面积大带来的工程站址场地选择受限等问题,本文在国内首次提出无功补偿装置直接接入主变压器中压侧的配置方案;给出三种接线型式,再通过比较可靠性、经济性和占地面积,推荐单组电抗器和电容器组采用共用断路器方式直接接入500 kV母线的接线型式;最后计算常规方案与中压侧方案的初始投资、占地面积和设备年损耗并采用费用现值法进行经济比较分析,中压侧方案与常规方案相比总平面占地指标降低4.6%,全寿命周期成本投资降低9.7%。In view of the limited site selection of the project station caused by many reactive power groups and large floor area at the low-voltage side of the main transformer of 1000 kV substation,it is proposed that the installation scheme of reactive power compensation device is directly connected to the medium-voltage side of the main transformer for the first time in China.According to the system requirements,single group reactance and capacitor capacity are given,and three wiring types are given.Then,by comparing reliability,economy and floor area the wiring type of single group reactor and capacitor bank directly connected to 500 kV bus by using common circuit breaker is recommended;Finally,calculate the initial investment,floor area and annual equipment loss of the conventional scheme and the medium voltage side scheme,and the cost present value method is used for economic comparison and analysis.Compared with the conventional scheme,the total plane land occupation index of the medium voltage side scheme is reduced by 4.6%and the life cycle cost investment is reduced by 9.7%.

关 键 词：特高压 无功补偿 中压侧 经济性评价 

分 类 号：TM714.3[电气工程—电力系统及自动化]