Assessment on the Total Transfer Capability of AC/DC System for Integrated Wind-Thermal Power

doi:10.11930/j.issn.1004-9649.201708096

Abstract

Abstract: AC/DC delivery of integrated wind-thermal power will be an important form of transmission in the future in China. The volatility of wind power output and the AC/DC hybrid transmission mode bring a new challenge to the calculation of the inter-regional total transfer capacity (TTC). Firstly, a system model is established for delivery of the integrated wind-thermal power into the same receiving-end area through the AC/DC transmission channel. Considering the problem of system reactive power adequacy, a TTC calculation model is established based on the improved continuous power flow algorithm, and the single sample value is quickly acquired. Then, considering the inherent volatility of wind power and various uncertain factors in the system, the non-sequential Monte Carlo simulation method is used to evaluate the inter-regional TTC, and the result is verified by case study. It is found that the AC/DC hybrid transmission mode can improve the regional TTC of the system, and the inter-regional TTC can be improved by increasing the proportion of integrated wind-thermal power within a reasonable range. However, when the proportion of wind-thermal power is too high, only the existing grid structure is upgraded and the transmission capacity of the transmission lines is improved, can the system's TTC level be further increased.

Key words: integrated wind-thermal power, AC/DC, improved continuous power flow algorithm, non-sequential Monte Carlo simulation, total transfer capability(TTC)

CLC Number:

TM72

MAO Feng, GUI Qianjin, WANG Lei, LUO Lirong, XU Ruixiang, LIU Shaofan, ZHAO Wenheng. Assessment on the Total Transfer Capability of AC/DC System for Integrated Wind-Thermal Power[J]. Electric Power, 2019, 52(1): 69-75.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201708096

https://www.electricpower.com.cn/EN/Y2019/V52/I1/69

References 13

[1]	刘杨, 周明, 向萌, 等. 大规模风电经直流外送的区域输电能力计算[J]. 电网与清洁能源, 2013, 29(2):48-53 LIU Yang, ZHOU Ming, XIANG Meng, et al. Total transfer capability calculation for regional power systems with HVDC connected with large scale wind power[J]. Power System and Clean Energy, 2013, 29(2):48-53
[2]	周明, 冉瑞江, 李庚银. 风电并网系统可用输电能力的评估[J]. 中国电机工程学报, 2010, 30(22):14-21 ZHOU Ming, RANG Ruijiang, LI Gengyin. Assessment on available transfer capability of wind farm incorporated system[J]. Proceedings of the CSEE, 2010, 30(22):14-21
[3]	梁海峰, 郭然, 高亚静. 计及天气因素的风电并网系统可用输电能力评估[J]. 电力系统保护与控制, 2013, 29(2):48-53 LIANG Haifeng, GUO Ran, GAO Yajing. Assessment on ATC of wind farm incorporated system considering weather[J]. Power System Protection and Control, 2013, 29(2):48-53
[4]	李国庆, 孙银锋, 王利猛. 基于内点法考虑风电穿透率的区域间可用输电能力研究[J]. 电力自动化设备, 2014, 34(3):1-7, 15 LI Guoqing, SUN Yinfeng, WANG Limeng. Interregional available transfer capability research based on interior point method with consideration of wind power penetration level[J]. Electric Power Automation Equipment, 2014, 34(3):1-7, 15
[5]	陈厚合, 李国庆, 张芳晶. 风电并网系统区域间概率可用输电能力计算[J]. 电力系统保护与控制, 2014, 42(21):59-65 CHEN Houhe, LI Guoqing, ZHANG Fangjing. Calculation of probabilistic available transfer capability of wind farm incorporated system[J]. Power System Protection and Control, 2014, 42(21):59-65
[6]	陈厚合, 李国庆, 姜涛. 计及静态电压稳定约束的交直流系统可用输电能力[J]. 电网技术, 2012, 36(2):75-81 CHEN Houhe, LI Guoqing, JIANG Tao. Available transfer capability of hybrid AC/DC power system considering constraint of static voltage stability[J]. Power System Technology, 2012, 36(2):75-81
[7]	李国庆, 张健. 含VSC-HVDC的交直流系统可用输电能力计算[J]. 电力系统保护与控制, 2011, 39(1):46-52 LI Guoqing, ZHANG Jian. Available transfer capability calculation for AC/DC systems with VSC-HVDC[J]. Power System Protection and Control, 2011, 39(1):46-52
[8]	艾琳, 郭雁珩, 徐国新. 特高压送端接入系统方式及输电能力研究[J]. 中国电力, 2017, 50(2):29-33, 39 AI Lin, GUO Yanheng, XU Guoxin. Research on grid-connection modes of sending ends and transmission capability of UHV transmission lines[J]. Electric Power, 2017, 50(2):29-33, 39
[9]	田蓓, 于珍, 李旭涛, 等. 考虑多风电场功率相关性的概率潮流联合分布计算[J]. 中国电力, 2017, 50(10):71-77 TIAN Bei, YU Zhen, LI Xutao, et al. Joint distribution calculation with probabilistic power flow considering dependencies among multiple wind power generations[J]. Electric Power, 2017, 50(10):71-77
[10]	刘皓明, 倪以信, 吴军基, 等. 计算电网可用输电能力的方法述评[J]. 继电器, 2003, 31(10):45-50 LIU Haoming, NI Yixin, WU Junji, et al. Review of available transfer capability calculation in electricity market[J]. Relay, 2003, 31(10):45-50
[11]	韩富春, 石洋, 李少华, 等. 基于GMRES的改进连续潮流算法研究[J]. 电力系统保护与控制, 2011, 39(15):23-27 HAN Fuchun, SHI Yang, LI Shaohua, et al. Research on improved continuation power flow with GMRES[J]. Power System Protection and Control, 2011, 39(15):23-27
[12]	陈蓉珺, 何永秀, 陈奋开, 等. 基于系统动力学和蒙特卡洛模拟的电动汽车日负荷预测[J]. 中国电力, 2018, 51(9):1-8 CHEN Rongjun, HE Yongxiu, CHEN Fenkai, et al. Long-term daily load forecast of electric vehicle based on system dynamics and Monte Carlo simulation[J]. Electric Power, 2018, 51(9):1-8
[13]	陈树勇, 徐林岩, 孙栩, 等. 基于多端柔性直流输电的风电并网控制研究[J]. 中国电机工程学报, 2014, 34(S1):32-38 CHEN Shuyong, XU Linyan, SUN Xu, et al. The control of wind power integration based on multi-terminal high voltage DC transmission with voltage source converter[J]. Proceedings of the CSEE, 2014, 34(S1):32-38

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