Analysis of High Frequency Resonance and Suppression in Yu to E VSC-HVDC Project Connected to Power Grid

doi:10.12096/j.2096-4528.pgt.21131

Abstract

Abstract:

In view of the high frequency resonance generated by Yu side connected to the AC grid in the Yu to E voltage source converter based high voltage direct current transmission (VSC-HVDC) south channel project, the characteristics of VSC-HVDC converter affecting the system stability were analyzed with the impedance analysis method. Mathematical model of the converter and AC line equivalent impedance was established by using the parameters of the converter and AC lines in Yu to E VSC-HVDC project. The impedance amplitude-frequency characteristics and phase-frequency characteristics of the converter and AC lines were obtained by applying MATLAB simulation calculation. The twice cases of high-frequency resonance in Yu side of the Yu to E back-to-back (BTB) VSC-HVDC south channel project were carried out in-depth analysis, and the cause of high frequency resonance was found by the analysis result. Finally, the high frequency resonance suppression strategy was put forward in Yu to E BTB VSC-HVDC project, and was verified by PSCAD simulation calculation.

Key words: voltage source converter based high voltage direct current transmission (VSC-HVDC), high frequency resonance, resistance analysis method, suppression strategy, simulation calculation

CLC Number:

TM 72

Wankai YANG, Xingguo WANG, Shuyang WANG. Analysis of High Frequency Resonance and Suppression in Yu to E VSC-HVDC Project Connected to Power Grid[J]. Power Generation Technology, 2022, 43(3): 492-500.

Figures/Tables 16

Fig. 1 Equivalent impedance circuit of grid-connected converters

Fig. 2 Control diagram of converter under simplified condition

Tab. 1 Parameters of Yu-E south channel

系统参数	取值
系统参数	渝侧	鄂侧
额定有功功率/MW	1 250	1 250
交流系统电压/kV	525	525
额定直流电流/A	1 488	1 488
变压器短路比/%	14	14
桥臂电抗/mH	140	140
电流环PI控制器比例(积分)系数	0.28(1/0.06)	0.28(1/0.06)
采样延时T_sd/s	50	50
系统延时T_td/s	500	350
采样时间T_s/s	100	100
工频周期T/s	0.02	0.02

Fig. 3 Magnitude-frequency characteristics of converter impedance

Fig. 4 Phase-frequency characteristics of converter impedance

Fig. 5 Magnitude-frequency characteristics of AC line impedance simulation calculation

Fig. 6 Phase-frequency characteristics of AC line impedance simulation calculation

Fig. 7 Magnitude difference frequency characteristics between converter (supplementary low pass filter in voltage feedforward) and AC line impedance

Fig. 8 Phase difference frequency characteristics between converter (supplementary low pass filter in voltage feedforward) and AC line impedance

Fig. 9 Magnitude difference frequency characteristics between converter (forward voltage link non-liner filter) and AC line impedance

Fig. 10 Phase difference frequency characteristics between converter (forward voltage link non-liner filter) and AC line impedance

Fig. 11 Voltage resonance waveform under two converter unit separate operation mode

Fig. 12 Magnitude difference frequency characteristics between converter and AC line impedance under two converters separate operation mode

Fig. 13 Phase difference frequency characteristics between converter and AC line impedance under two converters separate operation mode

Fig. 14 Waveform of power transfer from converter unit 2 to unit 1 at separate operation mode

Fig. 15 Waveform of unit 1 recovery normal operation while unit 2 stop and Zhangzhou II line trip at separate operation mode

References 29

1	王旭斌，杜文娟，王海风．弱连接条件下并网VSC系统稳定性分析研究综述[J]．中国电机工程学报，2018，38(6)：1593-1604． doi:10.13334/j.0258-8013.pcsee.170361
	WANG X B， DU W J， WANG H F ．Stability analysis of grid-tied VSC systems under weak connection conditions[J]．Proceedings of the CSEE，2018，38(6)：1593-1604． doi:10.13334/j.0258-8013.pcsee.170361
2	杨洁，刘开培，王东旭．向无源网络供电的双端柔性直流输电系统小信号稳定性分析[J]．中国电机工程学报，2015，35(10)：2400-2408． doi:10.13334/j.0258-8013.pcsee.2015.10.005
	YANG J， LIU K P， WANG D X ．Small signal stability analysis of VSC-HVSC applied to passive network[J]．Proceedings of the CSEE，2015，35(10)：2400-2408． doi:10.13334/j.0258-8013.pcsee.2015.10.005
3	徐政，薛英林，张哲任，等．大容量架空线柔性直流输电关键技术及前景展望[J]．中国电机工程学报，2014，34(29)：5051-5062． doi:10.13334/j.0258-8013.pcsee.2014.29.006
	XU Z， XUE Y L， ZHANG Z R，et al ．VSC-HVDC technology suitable for bulk power overhead line transmission[J]．Proceedings of the CSEE，2014，34(29)：5051-5062． doi:10.13334/j.0258-8013.pcsee.2014.29.006
4	马为民，吴方劼，杨一鸣，等．柔性直流输电技术的现状及应用前景分析[J]．高电压技术，2014，40(8)：2429-2439． doi:10.13336/j.1003-6520.hve.2014.08.025
	MA W M， WU F J， YANG Y M，et al ．Flexible HVDC transmission technology’s today and tomorrow[J]．High Voltage Engineering，2014，40(8)：2429-2439． doi:10.13336/j.1003-6520.hve.2014.08.025
5	刘增训，游沛羽，周勤勇．适用高比例新能源系统广域消纳的输电技术研究综述[J]．电力工程技术，2020，39(5)：59-70． doi:10.12158/j.2096-3203.2020.05.009
	LIU Z X， YOU P Y， ZHOU Q Y ．Transmission technologies adapting to power systems with widely-consumed high-proportion renewable energy[J]．Electric Power Engineering Technology，2020，39(5)：59-70． doi:10.12158/j.2096-3203.2020.05.009
6	王思华，赵磊，王军军，等．基于MMC的直流输电系统双极短路故障保护策略研究[J]．电力系统保护与控制，2021，49(11)：9-17． doi:10.19783/j.cnki.pspc.200999
	WANG S H， ZHAO L， WANG J J ．Research on protection strategy of a bipolar short circuit fault in an HVDC transmission system based on MMC[J]．Power System Protection and Control，2021，49(11)：9-17． doi:10.19783/j.cnki.pspc.200999
7	朱金涛，辛业春．柔性高压直流输电仿真技术研究方法综述[J]．智慧电力，2021，49(3)：1-11． doi:10.3969/j.issn.1673-7598.2021.03.002
	ZHU J T， XIN Y C ．Review of research on simulation methods of VSC-HVDC transmission system[J]．Smart Power，2021，49(3)：1-11． doi:10.3969/j.issn.1673-7598.2021.03.002
8	杨张斌，阮琳，雷肖，等．海上风电柔性直流换流阀端间绝缘试验异常分析及改进方法[J]．电力建设，2021，42(12)：68-74．
	YANG Z B， RUAN L， LEI X，et al ．Abnormality analysis and improved method of the field partial discharge for terminal insulation experiment of the MMC valve for offshore wind power transmission[J]．Electric Power Construction，2021，42(12)：68-74．
9	朱家宁，张诗钽，葛维春，等．海上风电外送及电能输送技术综述[J]．发电技术，2022，43(2)：236-248． doi:10.12096/j.2096-4528.pgt.22025
	ZHU J N， ZHANG S T， GE W C，et al ．Overview of offshore wind power transmission and power transportation technology[J]．Power Generation Technology，2022，43(2)：236-248． doi:10.12096/j.2096-4528.pgt.22025
10	温家良，吴锐，彭畅，等．直流电网在中国的应用前景分析[J]．中国电机工程学报，2012，32(13)：7-13． doi:10.1109/peam.2012.6612450
	WEN J L， WU R， PENG C，et al ．Analysis of DC grid projects in China[J]．Proceedings of the CSEE，2012，32(13)：7-13． doi:10.1109/peam.2012.6612450
11	周孝信，鲁宗相，刘应梅，等．中国未来电网的发展模式和关键技术[J]．中国电机工程学报，2014，34(29)：4999-5008． doi:10.13334/j.0258-8013.pcsee.2014.29.001
	ZHOU X X， LU Z X， LIU Y M，et al ．Development models and key technologies of future grid in China[J]．Proceedings of the CSEE，2014，34(29)：4999-5008． doi:10.13334/j.0258-8013.pcsee.2014.29.001
12	李云丰，汤广福，贺之渊，等．MMC型直流输电系统阻尼控制策略研究[J]．中国电机工程学报，2016，36(20)：5492-5503． doi:10.13334/j.0258-8013.pcsee.160769
	LI Y F， TANG G F， HE Z Y，et al ．Damping control strategy research for MMC based HVDC system[J]．Proceedings of the CSEE，2016，36(20)：5492-5503． doi:10.13334/j.0258-8013.pcsee.160769
13	ZOU C Y， RAO H， XU S K，et al ．Analysis of resonance between a VSC-HVDC converter and the AC grid[J]．IEEE Transactions on Power Electronics，2018， 33(12)：10157-11016． doi:10.1109/tpel.2018.2809705
14	CHEAH-MANE M， SAINZ L， LIANG J，et al ．Criterion for the electrical resonance stability of offshore wind power plants connected through HVDC links[J]．IEEE Transactions on Power Systems，2017，32(6)：4579-4589． doi:10.1109/tpwrs.2017.2663111
15	李岩，邹常跃，饶宏，等．柔性直流与极端交流系统间的谐波谐振[J]．中国电机工程学报，2018，38(S1)：19-23． doi:10.1109/access.2018.2886533
	LI Y， ZOU C Y， RAO H，et al ．Resonance of VSC-HVDC with extreme AC grid[J]．Proceedings of the CSEE，2018，38(S1)：19-23． doi:10.1109/access.2018.2886533
16	尹聪琦，谢小荣，刘辉，等．柔性直流输电系统振荡现象分析与控制方法综述[J]．电网技术，2018，42(4)：1117-1123． doi:10.13335/j.1000-3673.pst.2017.2606
	YIN C Q， XIE X R， LIU H，et al ．Analysis and control of the oscillation phenomenon in VSC-HVDC transmission system[J]．Power System Technology，2018，42(4)：1117-1123． doi:10.13335/j.1000-3673.pst.2017.2606
17	郭贤珊，刘泽洪，李云丰，等．柔性直流输电系统高频振荡特性分析及抑制策略研究[J]．中国电机工程学报，2020，40(1)：19-29． doi:10.13334/j.0258-8013.pcsee.190324
	GUO X S， LIU Z H， LI Y F，et al ．Characteristic analysis of high-frequency resonance of flexible high voltage direct current and research on its damping control strategy[J]．Proceedings of the CSEE， 2020，40(1)：19-29． doi:10.13334/j.0258-8013.pcsee.190324
18	国家电网有限公司．渝鄂直流背靠背联网工程南通道OLT试验高频谐波问题研究报告[R]．北京：国家电网有限公司，2018．
	State Grid Corporation of China ．Research report on high frequency harmonics in OLT test of south passage of Yu to E DC back-to-back network project[R]．Beijing：State Grid Corporation of China，2018．
19	徐文远，张大海．基于模态分析的谐波谐振评估方法[J]．中国电机工程学报，2005，25(22)：89-93． doi:10.3321/j.issn:0258-8013.2005.22.016
	XU W Y， ZHANG D H ．A modal analysis method for harmonic resonance assessment[J]．Proccedings of the CSEE，2005，25(22)：89-93． doi:10.3321/j.issn:0258-8013.2005.22.016
20	王潇，刘辉，胡小宝，基于等效电路阻尼稳定性判据的风电经柔性直流并网振荡风险与影响因素分析 [J]．全球能源互联网，2018，1(1)：48-55． doi:10.1109/powercon.2018.8601828
	WANG X， LIU H， HU X B，et al ．Analysis of risk and impacting factors of oscillation in wind farms integration via a flexible HVDC system based on equivalent circuit damping stability criterion[J]．Journal of Global Energy Interconnection，2018，1(1)：48-55． doi:10.1109/powercon.2018.8601828
21	CESPEDES M， SUN J ．Impedance modelling and analysis of grid-connected voltage-source converters[J]．IEEE Transactions on Power Electronics，2014，29(3)：1254-1261． doi:10.1109/tpel.2013.2262473
22	冯俊杰，邹常跃，杨双飞，等．针对中高频谐振问题的柔性直流输电系统阻抗精确建模与特性分析[J]．中国电机工程学报，2020，40(15)：4805-4819． doi:10.13334/j.0258-8013.pcsee.200327
	FENG J J， ZOU C Y， YANG S F，et al ．Accurate impedance modeling and characteristic analysis of VSC-HVDC system for mid- and high-frequency resonance problems[J]．Proceedings of the CSEE，2020，40(15)：4805-4819． doi:10.13334/j.0258-8013.pcsee.200327
23	吕敬，蔡旭，张占奎，等．海上风电场经MMC_HVDC并网的阻抗建模及稳定性分析[J]．中国电机工程学报，2016，36(14)：3771-3778． doi:10.13334/j.0258-8013.pcsee.152760
	LÜ J， CAI X， ZHANG Z K，et al ．Impedance modeling and stability analysis of MMC-based HVDC for offshore wind farms[J]．Proccedings of the CSEE，2016，36(14)：3771-3778． doi:10.13334/j.0258-8013.pcsee.152760
24	LYU J， CAI X ．Frequency domain stability analysis of MMC-based HVDC for wind farm integration[J]．IEEE Journal of Emerging and Selected Topics in Power Electronics，2016，4(1)：141-151． doi:10.1109/jestpe.2015.2498182
25	CHEN X， SUN J ．A study of renewable energy system harmonic resonance based on a DG test-bed[C]//Proceedings of Twenty-sixth Annual IEEE Applied Power Electronics Conference and Exposition．Fort Worth，USA：IEEE，2011：995-1002． doi:10.1109/apec.2011.5744716
26	CHEN X， SUN J ．Characterization of inverter-grid interactions using a hardware-in-the-loop system test-bed[C]//Proceedings of IEEE 8th International Conference on Power Electronics and ECCE Asia．Jeju，Korea：IEEE，2011：2180-2187． doi:10.1109/icpe.2011.5944412
27	HARNEFORS L， WANG X F， ALEJANDRO G Y，et al ．Passivity-based stability assessment of grid-connected VSCs：an overview[J]．IEEE Journal of Emerging and Selected Topics in Power Electronics，2016，4(1)：116-125. doi:10.1109/jestpe.2015.2490549
28	HARNEFORS L， YEPES A G， VIDAL A，et al ．Passivity based stabilization of resonant current controllers with consideration of time delay[J]．IEEE Transactions on Power Electronics，2014，29(12)：6260-6263． doi:10.1109/tpel.2014.2328669
29	郭贤珊，刘斌，梅红明，等．渝鄂直流背靠背联网工程交直流系统谐振分析与抑制[J]．电力系统自动化，2020，44(20)：157-164． doi:10.7500/AEPS20200211008
	GUO X　S， LIU B， MEI H M，et al ．Analysis and suppression of resonance between AC and DC systems in Chongqing-Hubei back-to-back HVDC project of China[J]．Automation of Electric Power Systems，2020，44(20)：157-164． doi:10.7500/AEPS20200211008