Analysis on Coupling Path and Damping Characteristics of Sub-synchronous Oscillation Between Photovoltaic and LCC-HVDC System

被引：0
|
作者：
Gao B. [1 ]
Chen S. [2 ]
Liu Y. [3 ]
机构：
[1] Hebei Key Laboratory of Distributed Energy Storage and Micro-grid, North China Electric Power University, Baoding
[2] Zaozhuang Power Supply Company, State Grid Shandong Electric Power Company, Zaozhuang
[3] Suzhou Power Supply Company, State Grid Jiangsu Electric Power Co., Ltd., Suzhou
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2022年 / 46卷 / 24期
关键词：
damping separation; damping torque; line-commutated-converter based high voltage direct current (LCC-HVDC); photovoltaic; sub-synchronous oscillation;
D O I：
10.7500/AEPS20220106002
中图分类号：
学科分类号：
摘要：
With the increase of photovoltaic capacity near the sending-end of line-commutated-converter based high voltage direct current (LCC-HVDC) system, the oscillation stability of photovoltaic transmission system via LCC-HVDC is prominent. However, sub-synchronous interaction between photovoltaic and LCC-HVDC system is still unclear, and there are few related studies. Thus, the closed-loop transfer function block diagram of photovoltaic stations via LCC-HVDC system is established. Based on this, the sub-synchronous component coupling path between photovoltaic and LCC-HVDC system is revealed. Then, a damping separation method is proposed to evaluate the effects of sub-synchronous interactions on the system damping. Finally, the influencing factors are analyzed by time domain simulation. The results show that the closed loop of photovoltaic, the coupling path between photovoltaic, LCC-HVDC system, and AC system all pass through the transfer function related to the subsynchronous oscillation mode dominated by DC capacitance, resulting in the damping characteristics of various interactions jointly determining the sub-synchronous oscillation (SSO) characteristics of the system. For the case in this paper, the interaction between photovoltaic and AC system as well as photovoltaic and LCC-HVDC system provides negative damping for SSO. When the proportional coefficient of the outer loop of the photovoltaic grid-connected inverter and the LCC-HVDC system rectifier decreases, the integral coefficient of the outer loop of the photovoltaic grid-connected inverter and the LCC-HVDC system rectifier increases, or illumination intensity increases, the risk of SSO increases. © 2022 Automation of Electric Power Systems Press. All rights reserved.
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页码：66 / 75
页数：9
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共 32 条
  • [1] LIU Zhenya, ZHANG Qiping, DONG Cun, Et al., Efficient and security transmission of wind，photovoltaic and thermal power of large-scale energy resource bases through UHVDC projects［J］, Proceedings of the CSEE, 34, 16, pp. 2513-2522, (2014)
  • [2] DING Ming, WANG Weisheng, WANG Xiuli, Et al., A review on the effect of large-scale PV generation on power systems［J］, Proceedings of the CSEE, 34, 1, pp. 1-14, (2014)
  • [3] YU Yongjun, ZHANG Yi, HUANG Biyue, Et al., Research on subsynchronous oscillation of photovoltaic power station equipped with SVG［J］, High Voltage Engineering, 47, 8, pp. 2720-2730, (2021)
  • [4] ZHANG Meiqing, Study of dynamic interaction analysis in weak sending-end power system with high proportion power electronics apparatus［D］, (2018)
  • [5] MA Jin, ZHAO Dawei, QIAN Minhui, Et al., Reviews of control technologies of large-scale renewable energy connected to weakly-synchronized sending-end DC power grid［J］, Power System Technology, 41, 10, pp. 3112-3120, (2017)
  • [6] JIANG Qirong, WANG Liang, XIE Xiaorong, Study on oscillations of power-electronized power system and their mitigation schemes［J］, High Voltage Engineering, 43, 4, pp. 1057-1066, (2017)
  • [7] DU Wei, JIANG Qirong, HONG Lucheng, Et al., Small signal analysis of multiple oscillation modes in a photovoltaic microgrid ［J］, Automation of Electric Power Systems, 38, 10, pp. 17-23, (2014)
  • [8] ZHAO Shuqiang, LI Ren, GAO Benfeng, Et al., Analysis of mechanism and characteristics in sub synchronous oscillation between PV and weak AC networks［J］, Proceedings of the CSEE, 38, 24, pp. 7215-7225, (2018)
  • [9] GAO Benfeng, YAO Lei, Supplementary damping control of SSO based on fuzzy active disturbance rejection control for photovoltaic-thermal-bundled system transmitted by series compensation［J］, Electric Power Automation Equipment, 38, 7, pp. 121-127, (2018)
  • [10] CHEN Qinlei, GUO Chunlin, YU Peng, Et al., Research on subsynchronous oscillations in power system with photovoltaic-thermal-bundled power transmitted by series compensation［J］, Modern Electric Power, 33, 5, pp. 59-67, (2016)
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