Optimization Design Method of Short Circuit Voltage of Main Transformer in Substation

doi:10.11930/j.issn.1004-9649.201706109

Abstract

Abstract: Appropriate selection of the short circuit voltage of the main transformer is one of the key problems in the planning and design of the substation, which determines the security, reliability, and economy during the substation operation. Firstly, functional relationships are established theoretically based on the impedance model of transformer available for the short circuit analysis. The functional relationships contain parameters of short circuit voltage and short circuit current, parameters of short circuit voltage and reactive power compensation. On these bases, the optimization design method is presented considering two constraints, including short circuit current level and reactive compensation capacity. Case study on the design of typical 220 kV substation verifies the correctness and effectiveness of the proposed method for the optimization of the parameters of short circuit voltage.

Key words: short circuit current, reactive power compensation, short circuit impedance, substation

CLC Number:

TM74

ZHAO Shuai, ZHANG Lai, LEI Guangyu, GAO Yi, ZHAO Gaoshuai, WU Jiaowen, FANG Fei, SONG Yang. Optimization Design Method of Short Circuit Voltage of Main Transformer in Substation[J]. Electric Power, 2018, 51(6): 60-66.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201706109

https://www.electricpower.com.cn/EN/Y2018/V51/I6/60

References

[1] 史京楠, 胡君慧, 黄宝莹, 等. 新一代智能变电站平面布置优化设计. 电力建设, 2014. 35(4):31-37.SHI Jingnan, HU Junhui, HUANG Baoying, et al. Layout optimization design of new generation smart substation[J]. Electric Power Construction, 2014. 35(4):31-37.
[2] 尹笋, 杨德培, 郑永康, 等. 智能变电站SCD中设备虚端子图形化生成系统的设计与实现[J]. 中国电力, 2016. 49(5):129-135.YIN Sun, YANG Depei, ZHENG Yongkang, et al. Graphical generation method and its implementation of virtual terminals in SCD of smart substation[J]. Electric Power, 2016, 49(5):126-135.
[3] 郭放. 计及指标关联度的配电通信网规划多维评价模型[J].中国电力, 2016, 49(8):126-129, 139.GUO Fang. Multi-dimensional evaluation model for distribution communication network planning by considering index relationship[J]. Electric Power, 2016, 49(8):126-129, 139.
[4] 导体和电器选择设计技术规定:DL/T 5222—2005[S]. 北京:中国电力出版社, 2005.
[5] 张运洲. 我国电网规划与发展中的几个具体问题[J]. 中国电力, 2003, 36(9):55-58.ZHANG Yunzhou. Specific problems of planning and development for power network in China[J]. Electric Power, 2003, 36(9):55-58.
[6] 黄娟娟, 郑英芬. 特高压网架对华中电网短路电流水平的影响分析及限流措施[J]. 中国电力, 2007, 40(3):49-52.HUANG Juanjuan, ZHENG Yingfen. Analysis of effect of 1000 kV UHV grid on the short circuit current of the Central China Grid and research on limiting measures of short circuit current[J]. Electric Power, 2003, 40(3):49-52.
[7] 应林志, 刘天琪, 王建全, 等. 基于改进蚁群优化限制短路电流的网架调整措施[J]. 电力系统自动化, 2018, 42(1):144-150.YING Linzhi, LIU Tianqi, WANG Jianquan, et al. Adjustment for power grid configuration to limit short-circuit current based on improved ant colony optimization[J]. Automation of Electric Power Systems, 2018, 42(1):144-150.
[8] 王皓怀, 唐宝, 刘淼, 等. 基于IEC60909的南方电网短路电流计算方法分析及优化[J]. 中国电力, 2015, 48(10):90-96.WANG Haohuai, TANG Bao, LIU Miao, et al. Analysis and optimization of short-circuit calculation method in CSG based on IEC60909[J]. Electric Power, 2015, 48(10):90-96.
[9] 城市电力网规划设计导则:Q/GDW 156-2006[S]. 北京:中国电力出版社, 2006.
[10] 孙树波, 李培国, 项阳. 关于电网用三绕组变压器短路阻抗配置的一些建议[J]. 变压器, 2009, 46(11):15-17.SUN Shubo, LI Peiguo, XIANG Yang. Proposals for short circuit impedance distribution of three-winding transformer in electric network[J]. Transformer, 2009, 46(11):15-17.
[11] 曾文慧. 变压器阻抗对并联无功补偿容量的影响[J]. 电网技术, 2007, 31(增刊1):231-232.ZENG Wenhui. Influence of transformer resistance to capacity of parallel reactive compensation[J]. Power System Technology, 2007, 31(S1):231-232.
[12] 刘海涛, 刘瑜. 110kV双绕组变压器短路阻抗的优化[J]. 现代电力, 2013, 30(2):74-77.Liu Haitao, Liu Yu.The optimization of short-circuit impendence for 110kv double-winding transformer[J]. Modern Electric Power, 2013, 30(2):74-77.
[13] 杨柳, 钟杰峰. 广东1500 MVA大容量变压器短路阻抗的研究[J]. 电力系统自动化, 2008, 32(23):104-107.YANG Liu, ZHONG Jiefeng. Short-circuit impedance of 1500 MVA large capacity transformer in Guangdong[J]. Automation of Electric Power Systems. 2008, 32(23):104-107.
[14] 孙强, 王彦峰. 广东电网500 kV大容量变压器阻抗参数的选择[J]. 广东电力, 2010, 23(12):59-62.SUN Qiang, WANG Yanfeng.Selection of impedance parameter for 500 kV large capacity transformers in Guangdong power grid[J]. Guangdong Electric Power, 2010, 23(12):59-62.
[15] 屈鲁, 李格, 李华. 脉冲电网用500kV三绕组降压变压器短路阻抗的优化[J]. 高电压技术, 2014, 40(10):3221-3227.QU Lu, LI Ge, LI Hua. Short-circuit impedance optimization for 500 kV three-winding step-down transformer in pulsed power electric network[J]. High Voltage Engineering, 2014, 40(10):3221-3227.
[16] 电力工业部电力规划设计总院. 电力系统设计手册[M]. 北京:中国电力出版社, 1998.