引用本文: | 常文寰,王果.组合式同相供电系统容量配置优化及分析[J].电力系统保护与控制,2016,44(23):94-101.[点击复制] |
CHANG Wenhuan,WANG Guo.Optimizing and analyzing of capacity configuration in combined co-phase power supply system[J].Power System Protection and Control,2016,44(23):94-101[点击复制] |
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摘要: |
为优化组合式同相供电系统同相补偿装置的容量,在牵引变电所端口电气量分析的基础上,利用变压器平衡接线和对称分量法原理,对同相补偿装置和牵引变压器的相对容量(β1)、电网侧负序和无功功率关系进行了分析。通过分析组合式同相供电系统结构,得到牵引变压器容量、同相补偿装置容量、系统短路容量和负载容量之间的关系,进而求得组合式同相供电系统在完全补偿、满意补偿条件下的β1值。分析表明,完全补偿时,β1等于1。无功满意补偿时,高速铁路不设无功补偿,功率因数可满足国标;普速铁路根据负载功率因数设置无功补偿度。负序不平衡度满足国标时,根据短路容量和负载容量设计β1。最后利用Matlab软件仿真验证了该结果的正确性。 |
关键词: 组合式同相供电 补偿容量 负序补偿 功率因数 无功补偿 |
DOI:10.7667/PSPC152021 |
投稿时间:2015-11-18修订日期:2016-01-18 |
基金项目:甘肃省科技计划资助(1504WKCA016); 甘肃省硕导项目(2015A-055);国家自然科学基金项目资助(51367010) |
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Optimizing and analyzing of capacity configuration in combined co-phase power supply system |
CHANG Wenhuan,WANG Guo |
(School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China) |
Abstract: |
In order to optimize the capacity of co-phase compensation device in combined co-phase power supply system, the relationship among relative capacity (β1) on co-phase compensation device and traction transformer, negative sequence and power factor is analyzed. Based on structure analysis of combined co-phase power supply system, with the usage of principle of transformer connection, the compensation principle of traction substation and symmetrical components theory, the relationship among traction transformer capacity, co-phase compensation device capacity, system short circuit capacity and load capacity is obtained. And then a series of values of β1 on complete compensation and satisfying compensation are analyzed respectively. The search result indicates as follows. The value of β1 is 1 when completely compensated. High speed railway doesn’t need reactive compensation when satisfying compensation on reactive power because its power factor is nearly 1, but ordinary speed railway set reactive power compensation factor according to power factor of load. Both of them need determine the values of β1 according to the short circuit and load capacity. Eventually simulation results by Matlab verify the validity of analytical calculation. This work is supported by Gansu Province Science and Technology Plan (No. 1504WKCA016), Tutors of Project in Gansu Province (No. 2015A-055), and National Natural Science Foundation of China (No. 51367010). |
Key words: co-phase power supply system compensation device capacity negative sequence compensation power factor reactive compensation |