换相失败条件下大容量电力电子电气制动技术应用研究
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摘要
针对西南多直流弱送端电网的暂态频率和电压控制问题,研究了换相失败条件下大容量电力电子电气制动技术的应用效果。分析了电网暂态冲击风险,并表述电气制动抵御风险的作用原理;在此基础上,给出了大容量电力电子电气制动系统的结构及典型控制策略,并进一步提出换相失败条件下系统通信方案;以西南电网为实际算例,仿真分析了三大直流换相失败条件下制动系统的控制效果,验证了制动系统的有效性。结果表明,制动系统可减弱换相失败对电网的冲击,有效抑制了电网暂态压升和频率升高;制动时间和制动容量对制动效果均具有重要影响,故需准确控制制动量。
In the light of the transient frequency and voltage control problems of the multi DC weak transmission network in southwest China, the paper makes a study on the application effect of large capacity power electronic and electric braking technology under commutation failure condition. Firstly, the transient shock risk of power grid is analyzed, and the principle of the electric braking to resist the risk is expounded. Secondly, the structure and typical control strategy of the large-capacity power electronic and electric brake system is given, and the communication scheme under the commutation failure condition is proposed. Finally, taking Southwest Power Grid as an example, the control effect of the braking system under three DC commutation failures is simulated and analyzed, and the effectiveness of the braking system is verified. The results show that the braking system can reduce the impact of the commutation failure on power grid, and effectively restrain the transient voltage rise and frequency rise of the power grid. Moreover, both braking time and braking capacity have an important impact on the braking effect, so it is necessary to accurately control the braking capacity and time.
In the light of the transient frequency and voltage control problems of the multi DC weak transmission network in southwest China, the paper makes a study on the application effect of large capacity power electronic and electric braking technology under commutation failure condition. Firstly, the transient shock risk of power grid is analyzed, and the principle of the electric braking to resist the risk is expounded. Secondly, the structure and typical control strategy of the large-capacity power electronic and electric brake system is given, and the communication scheme under the commutation failure condition is proposed. Finally, taking Southwest Power Grid as an example, the control effect of the braking system under three DC commutation failures is simulated and analyzed, and the effectiveness of the braking system is verified. The results show that the braking system can reduce the impact of the commutation failure on power grid, and effectively restrain the transient voltage rise and frequency rise of the power grid. Moreover, both braking time and braking capacity have an important impact on the braking effect, so it is necessary to accurately control the braking capacity and time.
引文
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[13]崔建业,骆济寿,彭文娟.用先进的动态电气制动提高电力系统稳定性[J].电网技术,1997,21(10):23-27.CUI Jianye, LUO Jitao, PENG Wenjuan. Improve power system stability by advanced dynamic braking[J]. Power System Technology, 1997,21(10):23-27.
[14]贾俊川,张健,仲悟之,等.应对多回并列直流换相失败的送端系统安全稳定控制措施研究[J].中国电机工程学报,2017,37(21):6320-6327.JIA Junchuan, ZHANG Jun, ZHONG Wuzhi, et al.Research on the security and stability control measures of the sending side system coping with multiple paralleloperation HVDCs simultaneous commutation failure[J].Proceedings of the CSEE, 2017,37(21):6320-6327.
[15]刘华钢,刘兵,陈钊.跨区多条直流连续多次、同时换相失败冲击及抑制措施[J].高电压技术,2016,42(10):3315-3320.LIU Huagang,LIU Bing,CHEN Zhao. Impact and suppression measures of repeated and simultaneous commutation failure in multiple HVDC power transmission system between two regional power grids[J].High Voltage Engineering,2016,42(10):3315-3320
[16]刘巨,孙海顺,文劲宇,等.交流互联电网中大扰动对联络线的冲击特性分析方法[J].电力系统自动化,2013,37(21):17-22.LIU Ju, SUN Haishun, WEN Jingyu, et al. A method for analyzing large disturbance impact characteristics on tieline in AC interconnected power grid[J]. Automation of Electric Power Systems,2013,37(21):17-22.
[17]唐欣,张武其,陈胜,等.与VSC-HVDC连接的弱电网暂态频率偏移定量计算和调整方法[J].中国电机工程学报,2015,35(9):2170-2176.TANG Xin, ZHANG Wuqi, CHEN Sheng, et al. Assessment and regulation of transient frequency deviation in weak grid connected to VSC-HVDC[J]. Proceedings of the CSEE,2015,35(9):2170-2176.
[18] LI Y, LIU H, LIU C, Et al. Study on AC-side dynamic braking-based fault ride-through control for islanded renewable energy system with grid-connected VSC-HVDC transmission[C]. Jinan:Chinese Automation Congress(CAC), 2017:6108-6111.
[2]高超,郭强,周勤勇,等.“十三五”电力规划中新能源大规模外送的安全稳定问题[J].中国电力,2017,50(1):37-42.GAO Chao, GUO Qiang, ZHOU Qinyong, et al. The security and stability problems of large-scale outbound power transmission of renewable energy in the 13th fiveyear power plan[J]. Electric Power,2017,50(1):37-42.
[3]王晶,梁志峰,江木,等.多馈人直流同时换相失败案例分析及仿真计算[J].电力系统自动化,2015,39(4):141-146.WANG Jing, LIANG Zhifeng, JIANG Mu, et al. Case analysis and simulation of commutation failure in multiinfeed HVDC transmission systems[J]. Automation of Electric Power Systems,2015,39(4):141-146.
[4]李新年,易俊,李柏青,等.直流输电系统换相失败仿真分析及运行情况统计[J].电网技术,2012,36(6):266-271.LI Xinnian, YI Jun, LI Baiqing,et al. Simulation analysis and operation statistics of commutation failure in HVDC transmission system[J]. Power System Technology,2012,36(6):266-271.
[5]王少辉,唐飞,刘涤尘,等.应对多直流同时换相失败的直流功率能量补偿调制方法[J].电网技术,2018,42(9):2876-2884.WANG Shaohui,TANG Fei,LIU Dichen,et al. DC Power Energy Compensation Modulation Method Coping with Simultaneous Multiple HVDC Commutation Failures[J].Power System Technology,2018,42(9):2876-2884.
[6]何剑,张健,郭强,等.直流换相失败冲击下的两区域交流联络线功率波动峰值计算[J].中国电机工程学报,2015,35(4):804-810.HE Jian, ZHANG Jian, GUO Qiang, et al. Peak value calculation of power oscillation on AC tie-line for twoarea interconnected power systems caused by HVDC commutation failure[J]. Proceedings of the CSEE, 2015,35(4):804-810.
[7] RAHIMI E, GOLE A M, DAVIES J R, et al. Commutation failure analysis in multi-infeed HVDC systems[J]. IEEE Transactions on Power Delivery, 2010,26(1):378-384.
[8]屠竞哲,张健,王建明,等.大规模直流异步互联系统受端故障引发送端稳定破坏的机理分析[J].中国电机工程学报,2015,35(21):5492-549.TU Jingzhe, ZHANG Jian, WANG Jianming, et al.Mechanism analysis on the sending-side instability caused by the receiving-side contingencies of large-scale HVDC asynchronous interconnected power systems[J]. Proceedings of the CSEE, 2015,35(21):5492-5499.
[9]李兆伟,吴雪莲,曹路,等.抑制直流连续换相失败的调相机紧急控制[J].电力系统自动化,2018,42(22):91-101.LI Zhaowei, WU Xuelian, CAO Lu, et al. Emergency Control of Synchronous Condenser to Suppress DC Continuous Commutation Failur[J]. Automation of Electric Power Systems,2018,42(22):91-101.
[10]吴小珊,涂亮,柳勇军,等.同步和异步运行电网暂态电压稳定性分析[J].智慧电力,2018,46(3):1-7,48.WU Xiaoshan, TU Liang, LIU Yongjun, et al. Transient voltage stability analysis of AC/DC hybrid power grid with synchronous and asynchronous operation[J]. Smart Power,2018,46(3):1-7,48.
[11]陈旭,刘新军,李东涛,等.高压开关电动操动机构的电气制动技木[J].高压电器,2017,53(2):199-203.CHEN Xu, LIU Xinjun, LI Dongtao, et al. Electric braking technology of high voltage switch electric operating mechanism[J]. High Voltage Apparatus,2017,53(2):199-203.
[12]陆地,李玉,武文广,等.大功率电力电子技术在我国直流输配电领域的应用[J].智慧电力,2017,45(8):1-8.LU Di, LI Yu, WU Wenguang, et al. Application of high power electronic technology in DC transmission and distribution[J]. Smart Power,2017,45(8):1-8.
[13]崔建业,骆济寿,彭文娟.用先进的动态电气制动提高电力系统稳定性[J].电网技术,1997,21(10):23-27.CUI Jianye, LUO Jitao, PENG Wenjuan. Improve power system stability by advanced dynamic braking[J]. Power System Technology, 1997,21(10):23-27.
[14]贾俊川,张健,仲悟之,等.应对多回并列直流换相失败的送端系统安全稳定控制措施研究[J].中国电机工程学报,2017,37(21):6320-6327.JIA Junchuan, ZHANG Jun, ZHONG Wuzhi, et al.Research on the security and stability control measures of the sending side system coping with multiple paralleloperation HVDCs simultaneous commutation failure[J].Proceedings of the CSEE, 2017,37(21):6320-6327.
[15]刘华钢,刘兵,陈钊.跨区多条直流连续多次、同时换相失败冲击及抑制措施[J].高电压技术,2016,42(10):3315-3320.LIU Huagang,LIU Bing,CHEN Zhao. Impact and suppression measures of repeated and simultaneous commutation failure in multiple HVDC power transmission system between two regional power grids[J].High Voltage Engineering,2016,42(10):3315-3320
[16]刘巨,孙海顺,文劲宇,等.交流互联电网中大扰动对联络线的冲击特性分析方法[J].电力系统自动化,2013,37(21):17-22.LIU Ju, SUN Haishun, WEN Jingyu, et al. A method for analyzing large disturbance impact characteristics on tieline in AC interconnected power grid[J]. Automation of Electric Power Systems,2013,37(21):17-22.
[17]唐欣,张武其,陈胜,等.与VSC-HVDC连接的弱电网暂态频率偏移定量计算和调整方法[J].中国电机工程学报,2015,35(9):2170-2176.TANG Xin, ZHANG Wuqi, CHEN Sheng, et al. Assessment and regulation of transient frequency deviation in weak grid connected to VSC-HVDC[J]. Proceedings of the CSEE,2015,35(9):2170-2176.
[18] LI Y, LIU H, LIU C, Et al. Study on AC-side dynamic braking-based fault ride-through control for islanded renewable energy system with grid-connected VSC-HVDC transmission[C]. Jinan:Chinese Automation Congress(CAC), 2017:6108-6111.