A Setting Optimization Strategy for Distance Protection Ⅱ after Connection of Synchronous Condensers

doi:10.11930/j.issn.1004-9649.202110027

Abstract

Abstract: The large-scale access of synchronous condensers (SCs) to the power grid will reduce the protection range of the distance protection section Ⅱ, and reasonable optimization of the protection setting is a feasible way to solve this problem. For this reason, based on an investigation of the influence of the SCs connection on the distance protection section Ⅱ, a setting value optimization strategy is proposed to increase the protection range of the distance protection section Ⅱ. Firstly, the steady-state current and short-circuit current of SCs are analyzed, and the influence of the SCs access on the protection range under the traditional distance protection Ⅱ setting is investigated from the perspective of the protection range. And then, for the purpose of reasonable selection of the protection range setting value and accurate calculation of branch coefficients, a setting value optimization strategy of distance protection section Ⅱ is proposed, which effectively improves the protection range of the distance protection section Ⅱ after SCs access. Finally, a simulation analysis is conducted on the setting value optimization strategy proposed in this paper, and the results show that the protection range obtained by the proposed method is less affected by the number of SCs and the impedance ratio of adjacent lines, and can be close to the preset value.

Key words: synchronous condenser, short current, distance protection, protection range, branch coefficient

LI Dongsheng, HAO Liangliang, GUO Zhilin, CAO Hong, WANG Xingguo. A Setting Optimization Strategy for Distance Protection Ⅱ after Connection of Synchronous Condensers[J]. Electric Power, 2022, 55(5): 76-83.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202110027

https://www.electricpower.com.cn/EN/Y2022/V55/I5/76

References

[1] 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
ZHOU Xiaoxin, LU Zongxiang, LIU Yingmei, et al. Development models and key technologies of future grid in China[J]. Proceedings of the CSEE, 2014, 34(29): 4999–5008
[2] 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): 7–12,185
WEN Jialiang, WU Rui, PENG Chang, et al. Analysis of DC grid prospects in China[J]. Proceedings of the CSEE, 2012, 32(13): 7–12,185
[3] 金一丁, 于钊, 李明节, 等. 新一代调相机与电力电子无功补偿装置在特高压交直流电网中应用的比较[J]. 电网技术, 2018, 42(7): 2095–2102
JIN Yiding, YU Zhao, LI Mingjie, et al. Comparison of new generation synchronous condenser and power electronic reactive-power compensation devices in application in UHV DC/AC grid[J]. Power System Technology, 2018, 42(7): 2095–2102
[4] IGBINOVIA F, FANDI G, AHMAD I, et al. Modeling and simulation of the anticipated effects of the synchronous condenser on an electric-power network with participating wind plants[J]. Sustainability, 2018, 10(12): 4834.
[5] 乔丽, 王航, 谢剑, 等. 同步调相机对分层接入特高压直流输电系统的暂态过电压抑制作用研究[J]. 中国电力, 2020, 53(3): 43–51
QIAO Li, WANG Hang, XIE Jian, et al. Suppressing effect of synchronous condenser on transient overvoltage of UHVDC system under hierarchical connection mode[J]. Electric Power, 2020, 53(3): 43–51
[6] 朱宏超, 沈轶君, 熊鸿韬, 等. 调相机与静态无功补偿装置的容量配置和协调控制策略[J]. 电力科学与技术学报, 2021, 36(6): 47–55
ZHU Hongchao, SHEN Yijun, XIONG Hongtao, et al. Capacity configuration and coordinated control strategy of synchronous condensers and static reactive power compensation devices[J]. Journal of Electric Power Science and Technology, 2021, 36(6): 47–55
[7] 孙鹏伟, 姚文峰, 黄东启, 等. STATCOM与新型调相机的技术性和经济性比较[J]. 南方电网技术, 2021, 15(1): 82–88
SUN Pengwei, YAO Wenfeng, HUANG Dongqi, et al. Technical and economic comparison between STATCOM and the new generation sychronous condenser[J]. Southern Power System Technology, 2021, 15(1): 82–88
[8] 郑涛, 余青蔚, 詹荣荣, 等. 调相机接入对发电机失磁保护的影响[J]. 电力系统保护与控制, 2018, 46(4): 50–56
ZHENG Tao, YU Qingwei, ZHAN Rongrong, et al. Impact of synchronous condenser access on generator loss of excitation protection[J]. Power System Protection and Control, 2018, 46(4): 50–56
[9] CAO H, HAN X J, WANG X G, et al. Influence of large-scale synchronous condenser on relay protection[C]//2020 IEEE 5 th Information Technology and Mechatronics Engineering Conference (ITOEC). Chongqing, China. IEEE, 2020: 796–800.
[10] 刘青, 王增平, 张媛. 消除STATCOM对线路距离保护影响方法的研究[J]. 电力系统保护与控制, 2010, 38(24): 93–98
LIU Qing, WANG Zengping, ZHANG Yuan. Research of a new method of eliminating the effect of STATCOM on distance protection[J]. Power System Protection and Control, 2010, 38(24): 93–98
[11] 李少飞, 李生虎. STATCOM不对称控制策略下线路距离保护测量阻抗的改进算法[J]. 电力系统保护与控制, 2013, 41(21): 65–70
LI Shaofei, LI Shenghu. Improved algorithm for transmission distance protection measuring impedance with STATCOM under unbalanced control strategy[J]. Power System Protection and Control, 2013, 41(21): 65–70
[12] SINGH A R, DAMBHARE S S. Adaptive distance protection of transmission line in presence of SVC[J]. International Journal of Electrical Power & Energy Systems, 2013, 53: 78–84.
[13] 李怀强, 高露, 粟小华, 等. 基于非最严苛电网运行方式的超高压线路距离保护整定方法[J]. 电力系统保护与控制, 2020, 48(21): 166–172
LI Huaiqiang, GAO Lu, SU Xiaohua, et al. A distance protection relay coordination method for EHV transmission lines based on non most severe grid operation mode[J]. Power System Protection and Control, 2020, 48(21): 166–172
[14] 郭智琳, 郝亮亮, 陈争光, 等. 调相机失磁特性及其对直流系统的影响分析[J]. 电力系统自动化, 2019, 43(20): 130–137
GUO Zhilin, HAO Liangliang, CHEN Zhengguang, et al. Analysis on excitation loss characteristics of synchronous condenser and its influence on direct current system[J]. Automation of Electric Power Systems, 2019, 43(20): 130–137
[15] 王庆, 沙江波, 杨鹏程, 等. 同步调相机对LCC-HVDC换相失败抵御能力的影响研究[J]. 电工电能新技术, 2018, 37(5): 29–36
WANG Qing, SHA Jiangbo, YANG Pengcheng, et al. Study of impact of SC on ability to defend commutation failure of LCC-HVDC[J]. Advanced Technology of Electrical Engineering and Energy, 2018, 37(5): 29–36
[16] 李志强, 蒋维勇, 王彦滨, 等. 大容量新型调相机关键技术参数及其优化设计[J]. 大电机技术, 2017(4): 15–22
LI Zhiqiang, JIANG Weiyong, WANG Yanbin, et al. Key technical parameters and optimal design of new types of large capacity synchronous condenser[J]. Large Electric Machine and Hydraulic Turbine, 2017(4): 15–22
[17] 王雅婷, 张一驰, 周勤勇, 等. 新一代大容量调相机在电网中的应用研究[J]. 电网技术, 2017, 41(1): 22–28
WANG Yating, ZHANG Yichi, ZHOU Qinyong, et al. Study on application of new generation large capacity synchronous condenser in power grid[J]. Power System Technology, 2017, 41(1): 22–28
[18] 电力行业继电保护标准化委员会. 220 kV~750 kV电网继电保护装置运行整定规程: DL/T 559—2007[S]. 北京: 中国电力出版社, 2007.
[19] 贺家李, 李永丽, 董新洲. 电力系统继电保护原理[M]. 4版. 北京: 中国电力出版社, 2010: 161–163.
[20] 范春菊, 邰能灵, 胡炎. 超高压输电线路继电保护原理[M]. 北京: 中国电力出版社, 2015: 61–63.
[21] 雷淇, 王晓阳, 刘亚东, 等. 适用于后备保护整定计算的阶段式发电机模型[J]. 电力自动化设备, 2019, 39(1): 183–191
LEI Qi, WANG Xiaoyang, LIU Yadong, et al. Stage generator model for backup protection setting calculation[J]. Electric Power Automation Equipment, 2019, 39(1): 183–191
[22] 李玮, 尹刚志, 东立荣. 继电保护整定计算中故障计算模型的选择和形成[J]. 华北电力技术, 2010(5): 25–28
LI Wei, YIN Gangzhi, DONG Lirong. Selection and formulation of fault calculation model for power relay protection calculation[J]. North China Electric Power, 2010(5): 25–28
[23] 杨炼, 范春菊, 邰能灵. 考虑储能电站运行特性的配电网距离保护的整定优化策略[J]. 中国电机工程学报, 2014, 34(19): 3123–3131
YANG Lian, FAN Chunju, TAI Nengling. Optimized setting strategy of distance protection in distribution networks with battery-energy storage systems[J]. Proceedings of the CSEE, 2014, 34(19): 3123–3131
[24] 高景德, 王祥珩, 李发海. 交流电机及其系统的分析[M]. 北京: 清华大学出版社, 1993: 105–107.