一种海上风电继电保护配置优化方案研究
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摘要
[目的]为了提升海上风电场利用效能和节省投资成本,需要对海上风电场电气主设备的继电保护进行合理配置以及优化动作时限。[方法]取消220 kV海缆出线侧的断路器,连接海上升压站母线两侧的220 kV海缆纳入海缆"T"接线路的三端分相电流差动全线速动保护范围。同时,将35 kV站用变和35 kV接地变合并,采用简易35 kV母线保护,配置主变低压侧与35 kV进线开关之间电缆的零序CT等措施。[结果]因此,节省了1台220 kV断路器及2套220 kV母差保护投资。同时,节省了约70 m~2的海上升压站空间和相应投资成本,提高了保护配置的灵敏性和可靠性。[结论]海上风电继电保护配置优化方案经济合理,有望应用于工程实践中。
[Introduction]To improve the utilization efficiency and save the investment cost, the relay protection area and operation time in offshore wind farm need to be optimized. [Method]This paper eliminated the circuit breaker of 220 kV submarine cable outlet side, and steed the three-phase split current differential full range of rapid "T" zone protection for 220 kV submarine cable small bus. At the same time, the 35 kV station and 35 kV grounding transformer were combined, using simple 35 kV bus protection, and increasing the low pressure side of the main transformer zero sequence CT. [Result] The result shows that the optimization relay protection scheme can save a 220 kV circuit breaker and two sets of 220 kV bus differential protection investment. At the same time, the 70 m~2 of space and corresponding investment cost of offshore substation can be saved. And the sensitivity and reliability of the protection configuration has been improved. [Conclusion] Finally, the optimal scheme of offshore wind farm relay protection is economical and reasonable, and it is expected to be applied in engineering practice.
[Introduction]To improve the utilization efficiency and save the investment cost, the relay protection area and operation time in offshore wind farm need to be optimized. [Method]This paper eliminated the circuit breaker of 220 kV submarine cable outlet side, and steed the three-phase split current differential full range of rapid "T" zone protection for 220 kV submarine cable small bus. At the same time, the 35 kV station and 35 kV grounding transformer were combined, using simple 35 kV bus protection, and increasing the low pressure side of the main transformer zero sequence CT. [Result] The result shows that the optimization relay protection scheme can save a 220 kV circuit breaker and two sets of 220 kV bus differential protection investment. At the same time, the 70 m~2 of space and corresponding investment cost of offshore substation can be saved. And the sensitivity and reliability of the protection configuration has been improved. [Conclusion] Finally, the optimal scheme of offshore wind farm relay protection is economical and reasonable, and it is expected to be applied in engineering practice.
引文
[1] 中华人民共和国国家发展和改革委员会. 风力发电场设计技术规范:DL/T 5383—2007 [S]. 北京:中国电力出版社出版,2007.
[2] 中国国家标准化管理委员会. 风电场接入电力系统技术规定:GB/T 19963—2011 [S]. 北京:中国标准出版社,2011.
[3] 中国国家标准化管理委员会. 继电保护和安全自动装置技术规程:GB/T 14285—2006 [S]. 北京:中国标准出版社,2006. China Standardization Administration of China. Technical code for relaying protection and security automatic equipment:GB/T 14285—2006 [S]. Beijing: China Standard Press, 2006.
[4] 闫培丽,袁兆祥,齐立忠,等.海上风电场二次系统设计关键技术 [J]. 电力建设,2015,36(4):129-133. YAN P L, YUAN Z X, QI L Z, et al. Key technology of offshore wind farm secondary system design [J]. Electric Power Construction, 2015, 36(4): 129-133.
[5] 杨高峰. 顿丘变电站全站失压事故应急预案的研究 [D]. 郑州:郑州大学,2010.
[6] 张保会,王进,李光辉,等. 具有低电压穿越能力的风电接入电力系统继电保护的配合 [J]. 电力自动化设备,2012,32(3):1-6. ZHANG B H, WANG J, LI G H, et al. Cooperation of relay protection for grid-connected wind power with low-voltage ride-through capability [J]. Electric Power Automation Equipment, 2012, 32(3): 1-6.
[7] 张保会,原博,王进,等. 风电接入对继电保护的影响(七)—风电场送出电网继电保护配置研究 [J]. 电力自动化设备,2013,33(7):1-5. ZHANG B H, YUAN B, WANG J, et al.Impact of wind farm integration on relay protection(7): analysis of relay protection configuration for wind farm outgoing power grid [J].Electric Power Automation Equipment, 2013, 33(7): 1-5.
[8] 汤向华,施雄杰,袁松. 三侧光纤纵差保护在T接线路上的应用 [J]. 继电器,2008,36(3):64-67. TANG X H, SHI X J, YUAN S. Application of three sides fibers longitudinal differential protection in T-connected lines [J]. Relay, 2008, 36(3): 64-67.
[9] 徐敏. 利用光纤差动保护实现改善风井区110 kV线路保护性能的研究 [J]. 煤矿机电,2011,11(1):25-27+35. XU M. Research on the implement and improvement of the performance of protection for 110 kV line in ventilating shaft area [J]. Coal Mine Electrical, 2011, 11(1): 25-27+35.
[10] 王楠,梁伟. 10 kV小电阻接地系统站用变配置方案研究 [J]. 电力勘测设计,2014,10(5):70-74. WANG N, LIANG W. Study on station variable configuration scheme of 10 kV low resistance grounding system [J]. Electric Power Survey and Design, 2014, 10(5): 70-74.
[11] 陈杰明. 基于GOOSE的10 kV简易母线保护研究和应用 [J]. 电力系统自动化,2011,35(4):96-99. CHEN J M. 10 kV bus protection research and application based on GOOSE [J]. Automation of Electric Power Systems, 2011, 35(4): 96-99.
[12] 曾伟忠. 缩短变电站10 kV母线短路故障切除时间措施初探 [J].继电器,2007,35(16):61-63. ZENG W Z. Measures to shorten the time of clearing short-circuit faults on 10 kV bus [J]. Relay, 2007, 35(16): 61-63.
[13] 王建中. 35 kV简易母线保护动作分析 [J]. 电力系统自动化,2006,30(14):105-107. WANG J Z. 35 kV simple bus protection action analysis [J]. Automation of Electric Power Systems, 2006, 30(14): 105-107.
[2] 中国国家标准化管理委员会. 风电场接入电力系统技术规定:GB/T 19963—2011 [S]. 北京:中国标准出版社,2011.
[3] 中国国家标准化管理委员会. 继电保护和安全自动装置技术规程:GB/T 14285—2006 [S]. 北京:中国标准出版社,2006. China Standardization Administration of China. Technical code for relaying protection and security automatic equipment:GB/T 14285—2006 [S]. Beijing: China Standard Press, 2006.
[4] 闫培丽,袁兆祥,齐立忠,等.海上风电场二次系统设计关键技术 [J]. 电力建设,2015,36(4):129-133. YAN P L, YUAN Z X, QI L Z, et al. Key technology of offshore wind farm secondary system design [J]. Electric Power Construction, 2015, 36(4): 129-133.
[5] 杨高峰. 顿丘变电站全站失压事故应急预案的研究 [D]. 郑州:郑州大学,2010.
[6] 张保会,王进,李光辉,等. 具有低电压穿越能力的风电接入电力系统继电保护的配合 [J]. 电力自动化设备,2012,32(3):1-6. ZHANG B H, WANG J, LI G H, et al. Cooperation of relay protection for grid-connected wind power with low-voltage ride-through capability [J]. Electric Power Automation Equipment, 2012, 32(3): 1-6.
[7] 张保会,原博,王进,等. 风电接入对继电保护的影响(七)—风电场送出电网继电保护配置研究 [J]. 电力自动化设备,2013,33(7):1-5. ZHANG B H, YUAN B, WANG J, et al.Impact of wind farm integration on relay protection(7): analysis of relay protection configuration for wind farm outgoing power grid [J].Electric Power Automation Equipment, 2013, 33(7): 1-5.
[8] 汤向华,施雄杰,袁松. 三侧光纤纵差保护在T接线路上的应用 [J]. 继电器,2008,36(3):64-67. TANG X H, SHI X J, YUAN S. Application of three sides fibers longitudinal differential protection in T-connected lines [J]. Relay, 2008, 36(3): 64-67.
[9] 徐敏. 利用光纤差动保护实现改善风井区110 kV线路保护性能的研究 [J]. 煤矿机电,2011,11(1):25-27+35. XU M. Research on the implement and improvement of the performance of protection for 110 kV line in ventilating shaft area [J]. Coal Mine Electrical, 2011, 11(1): 25-27+35.
[10] 王楠,梁伟. 10 kV小电阻接地系统站用变配置方案研究 [J]. 电力勘测设计,2014,10(5):70-74. WANG N, LIANG W. Study on station variable configuration scheme of 10 kV low resistance grounding system [J]. Electric Power Survey and Design, 2014, 10(5): 70-74.
[11] 陈杰明. 基于GOOSE的10 kV简易母线保护研究和应用 [J]. 电力系统自动化,2011,35(4):96-99. CHEN J M. 10 kV bus protection research and application based on GOOSE [J]. Automation of Electric Power Systems, 2011, 35(4): 96-99.
[12] 曾伟忠. 缩短变电站10 kV母线短路故障切除时间措施初探 [J].继电器,2007,35(16):61-63. ZENG W Z. Measures to shorten the time of clearing short-circuit faults on 10 kV bus [J]. Relay, 2007, 35(16): 61-63.
[13] 王建中. 35 kV简易母线保护动作分析 [J]. 电力系统自动化,2006,30(14):105-107. WANG J Z. 35 kV simple bus protection action analysis [J]. Automation of Electric Power Systems, 2006, 30(14): 105-107.