|
|
|
| Zero-sequence current detection method of distribution network based on AMR bidirectional array |
| 1. College of Energy and Mechanical Engineering， Shanghai University of Electric Power, Shanghai 200090, China； 2. Shanghai Institute of Microsystem and Information Technology， Chinese Academy of Sciences， Shanghai 200050, China |
|
|
|
|
Abstract When single-phase grounding fault occurs in distribution network, the fault current information cannot be collected accurately by existing devices due to the small fault current. Therefore, a zero-sequence current detection scheme for compensating electromagnetic interference was proposed to improve the measurement accuracy of zero-sequence current.Three AMR bidirectional array current sensors were used to synthesize zero-sequence current.The mathematical model of measuring current was established, and the location of sensor array was determined by Matlab numerical simulation to propose a zero-sequence current measurement scheme.The simulation model of 10 kV small current grounding system was established by Simulink, and the zero-sequence current measurement error of the scheme was analyzed.The proposed scheme was verified by comparing the experimental data of different schemes. The theoretical analysis and simulation results show that the proposed method can detect zero-sequence current effectively and accurately.
|
|
Received: 28 November 2020
|
|
|
|
| ［1］ |
欧阳健娜,俞小勇,周杨珺, 等.配网线路两点相继接地故障选线方法[J].南方电网技术,2020,14(6):81-89.
|
|
OUYANG J N, YU X Y, ZHOU Y J, et al.A fault line selection method for two-point successive grounding of power distribution lines[J]. Southern Power System Technology,2020,14(6):81-89.（in Chinese）
|
| [2] |
彭刚,钟振鑫,肖瑞超, 等.基于零序电流-电压微分特性的小电阻接地系统单相接地故障保护原理[J].电测与仪表， 2021,57（7）：143-149.
|
|
PENG G, ZHONG Z X,XIAO R C, et al.Grounding faults protection in low-resistance grounded systems based on zero-sequence current-voltage differential cha-racteristics[J].Electrical Measurement & Instrumentation, 2021,57（7）：143-149. （in Chinese）
|
| [3] |
黄宇浩,陈豪威,周佳铭, 等.基于暂态零序电流频谱灰关联分析的谐振接地系统故障选线方法[J].电力科学与技术学报,2017,32(3):69-74.
|
|
HUANG Y H, CHEN H W, ZHOU J M, et al.Faulty feeder detection using grey relation analysis of transient zero-sequence current spectrum in resonant grounding system[J]. Journal of Electric Power Science and Technology, 2017,32(3):69-74. （in Chinese）
|
| [4] |
梁梦可,滕欢,李雪松, 等.考虑非平衡特性的辐射状配电网故障定位方法[J].电力科学与技术学报,2020,35(2):61-68.
|
|
LIANG M K,TENG H,LI X S,et al.A novel fault location algorithm for radial distribution networks considering the unbalanced characteristics[J].Journal of Electric Power Science and Technology,2020,35(2):61-68. （in Chinese）
|
| [5] |
韦莉珊, 贾文超, 焦彦军. 基于5次谐波与导纳不对称度的配电网单相接地选线方法[J].电力系统保护与控制, 2020, 48(15): 77-83.
|
|
WEI L S, JIA W C, JIAO Y J.Single-phase fault line selection scheme of a distribution system based on fifthharmonic and admittance asymmetry[J].Power System Protection and Control, 2020,48(15):77-83. （in Chinese）
|
| [6] |
邓杰文,卢彦西,赵军.不对称电网馈线零序电流分布特征分析[J].电力科学与技术学报,2020,35(2):100-106.
|
|
DENG J W,LU Y X,ZHAO J. Analysis on distribution characteristics of zero sequence current of feeders in asymmetric grid[J].Journal of Electric Power Science and Technology,2020,35 (2):100-106. （in Chinese）
|
| [7] |
QIUA F W, WANG J D, ZHANG Y T, et al. Resolution limit of anisotropic magnetoresistance(AMR) based vector magnetometer[J].Sensors and Actuators A: Physical, 2018, 280: 61-67.
|
| [8] |
LI Z C, DIXON S. A closed-loop operation to improve GMR sensor accuracy [J].IEEE Sensors Journal, 2016, 16(15):6003-6007.
|
| [9] |
YE C F, WANG Y, TAO Y. High-density large-scale TMR sensor array for magnetic field imaging[J].IEEE Transactions on Instrumentation and Measurement, 2019, 68(7): 2594-2601.
|
| [10] |
CHEN Y, HUANG Q, KHAWAJA A H. An interfe-rence-rejection strategy for measurement of small current under strong interference with magnetic sensor array [J]. IEEE Sensors Journal, 2019, 19(2): 692-700.
|
| [11] |
LI Z H, ZHANG S Q, WU Z T, et al. Study of current measurement method based on circular magnetic field sensing array[J]. Sensors, doi: 10.3390/s18051439.
|
| [12] |
CHEN Y F, HUANG Q, KHAWAJA A H, et al. A novel non-invasion magnetic sensor array based measurement method of large current [J]. Measurement, 2019, 139: 78-84.
|
| [13] |
MA X, GUO Y, CHEN X, et al. Impact of coreless current transformer position on current measurement [J]. IEEE Transactions on Instrumentation and Mea-surement, 2019, 68(10): 3801-3810.
|
| [14] |
柳青青,郑政.AMR传感器在UBM线性扫描探头中的应用[J].传感器与微系统,2013,32(2):146-148.
|
|
LIU Q Q，ZHENG Z. Application of AMR sensor in UBM linear scanning probe[J].Transducer and Mic-rosystem Technologies, 2013,32(2):146-148. （in Chinese）
|
| [15] |
ANDREA B, LUIGI F, MARCO L,et al.An AMR-based three-phase current sensor for smart grid applications[J].IEEE Sensors Journal，2017，17（23）：7704-7712.
|
|
|
|
2022, Vol. 43 
