Min Liu

State Grid Corporation of China (China)

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D. L. Xu

Shanghai Jiao Tong University

Antonio Bergnoli

Istituto Nazionale di Fisica Nucleare, Sezione di Padova

Jianglai Liu

Shanghai Jiao Tong University

A. Brigatti

Istituto Nazionale di Fisica Nucleare, Sezione di Milano

Haifeng Yao

Weifang Medical University

M. Wurm

Johannes Gutenberg University Mainz

Z. You

Sun Yat-sen University

Jun Wang

Capital Medical University

Siyu Jian

China Institute of Atomic Energy

C. Y. Yu

State Key Laboratory of Nuclear Physics and Technology

Cooperative Institutions

A. Alikhanyan National Laboratory

397

Universidade Estadual de Londrina

395

Pontifical Catholic University of Rio de Janeiro

395

Institute of High Energy Physics

359

Beijing Normal University

352

Université Libre de Bruxelles

344

Chinese Academy of Sciences

327

Federico Santa María Technical University

264

China Academy of Space Technology

215

China Institute of Atomic Energy

209

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Node Sensitivity Analysis Method for Power Quality Control of High Proportion Distributed Photovoltaic Access Distribution Network

2022 IEEE International Conference on Advances in Electrical Engineering and Computer Applications (AEECA) (2021)

Lei Zhou Feng Wang Xutao Li Min Liu Hanhua Zhang

Composite energy storage device is an effective method to solve series power quality problems caused by the excessive proportion of decentralized photovoltaic power generation incorporated into the distribution network, such as instantaneous power, voltage and harmonic pollution. A node sensitivity analysis method for power quality control of high-proportion distributed photovoltaic access distribution network is proposed, and the location and size of composite energy storage devices are quickly solved. Firstly, an optimization planning model for location and capacity of composite energy storage devices is established, which includes multi-objective optimization functions such as node voltage deviation, current total harmonic distortion rate and installation cost. Secondly, the sensitivity analysis method is used to preprocess all nodes to reduce the number of candidate nodes, and the feasible installation node alternative set of the composite energy accumulation device optimization planning model is obtained. In the process of using the improved multiobjective particle swarm optimization algorithm to solve the model, the amount of calculation is greatly reduced and the optimization efficiency is improved. Finally, taking IEEE 33 - bus distribution system as an example, the simulation results show the superiority of the node sensitivity analysis method.

10.1109/aeeca52519.2021.9574229

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Citations (1)

Analysis on the Withstanding Ability of Power Transformers to DC Bias Under Power Quality Constraints

Gao dianya jishu (2010)

Min Liu

The DC bias phenomenon will cause impacts on normal operation of power transformers,and the withstanding ability of power transformer to DC bias is the prerequisite to the stability of power system.Based on a piecewise linear model of the iron core,the mathematical expressions between the transformer output voltage and the DC bias were deduced by virtue of the fundamental electromagnetic equations.Further,by incorporating the power quality constraints of power systems,effective criterions were established based on both the voltage regulation rate and the total harmonic distortion rate to determine the maximum possible DC bias current that the transformers could withstand,and simulations were also given to verify the analyzed results.Analysis also indicates that,both the saturation factor and the load power factor may execute sensible effects on transformers'capability to withstand DC bias,which should be considered comprehensively for assessment.The research presents useful reference for the design and operation of power transformers,as well as for further developing methodology to suppress DC bias.

DC bias

Energy efficient transformer

Source

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Real-time Simulation of the Harmonic Influence on Electric Metering Using RTDS

Li Ling Naiqiu Shu Chunming Pei Min Liu Changyu Li

For correct practice measurement of harmonics in power system, a proposition that both the value and direction of harmonic power contribute to the rationality of electric metering was provides through theoretical analysis, and then it was verified by simulation on the real-time digital simulator (RTDS) in this paper.

Metering mode

Harmonic

Power system harmonics

Harmonic Analysis

10.1109/icpst.2006.321818

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Citations (4)

Robust estimation of stem cell lineages using local graph matching

IEEE Computer Society Conference on Computer Vision and Pattern Recognition workshops (2009)

Min Liu Amit K. Roy-chowdhury G. Venugopala Reddy

In this paper, we present a local graph matching based method for tracking cells and cell divisions. This will allow us to estimate the lineages of the cells in a 4D spatio-temporal image stack obtained using fluorescence imaging techniques. We work with plant cells, where the cells are tightly clustered in space and computing correspondences in space and time can be very challenging. The local graph matching method is able to compute the lineages even when significant portions of the images are corrupted due to sensor noise in the imaging process or segmentation errors. The geometric structure and topology of the cells' relative positions are efficiently exploited to solve the tracking problem using the local graph matching technique. The process not only computes the correspondences of cells across spatial and temporal image slices, but is also able to find out where and when cells divide, identify new cells and detect missing ones. Using this method we show experimental results to track the properly segmented cells, and compute cell lineages from images captured over 72 hours, even when some of those images are highly noisy (e.g., missing cells).

Tracking (education)

10.1109/cvpr.2009.5204045

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Citations (2)

Research on power tracing methods at frequencies from 400 Hz to 100 kHz

Yalu Li Min Liu You Li Chen Aqin

Proposes a new power tracing method named with RMS-Impedance by comparing the advantages and disadvantages of several wideband power measurement methods, and gives the principles and realizations of RMS-Impedance Method, Three Parameters Method and Three Voltmeters Method. In order to build a wideband power standard, we compare and verify these three methods by experiments, and try a new power tracing approach.

Tracing

Wideband

Voltmeter

10.1109/icemi.2011.6037709

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Citations (3)

COMPUTATIONAL–EXPERIMENTAL INVESTIGATIONS OF BUSINESS JET STATIC AEROELASTIC CHARACTERISTICS

TsAGI science journal (2018)

Gennadiy Ashotovich Amiryants Fanil Ishmuratov Yuryi Alexeevich Nayko Ma Jingzhong Guoliang Wang

Special aspects of computational–experimental investigations of static aeroelastic characteristics of a business jet were considered. The experimental investigations were based on tests conducted in a high-speed wind tunnel with an elastically scaled model of a wing, which were accompanied at all stages by computational investigations directed at the safety of tests and increased accuracy of the investigations.

Aeroelasticity

10.1615/tsagiscij.2018029474

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A Switch-controlled Hybrid Power Quality Compensator for All-day Power Quality Compensation in AC-DC Networks at Different Times of Day

2021 International Conference on Power System Technology (POWERCON) (2018)

Yizheng Xu Xujiang Chen Min Liu Fang Tian Shuchang Yan

The adoption of power electronic devices in most AC-DC power networks have caused power quality (PQ) issues such as harmonics, unbalance and low power factor. These issues should be solved by the most suitable compensation technology to guarantee the best compensation result. It is common that more than one PQ issue will be caused at a supply bus, usually with some issues affecting more than the others at different time of the day which depends on load flow and load compositions. Therefore, different compensation technologies should be used at different time of day to ensure the best compensation result at all time. This paper designs a switch-controlled hybrid power quality compensator to guarantee all-day best compensation for AC-DC networks. The hybrid PQ compensator is composed of multiple compensators with different functionalities and controlled by switches. The subjective-objective methodology (SOM) is used to determine which compensation technologies should be adopted at different times of day. Based on the decision, the switches will behave and the corresponding compensators will be connected or disconnected for compensation.

Compensation methods

Static VAR compensator

10.1109/powercon.2018.8602142

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Citations (3)

Cold & Black Environment Design in Large Space Simulator

Physics Procedia (2015)

Min Liu Botao Liu Wang Zijuan Weiwei Shan Ding Wenjing

Abstract A space simulator provides a spacecraft with a specified environment during a thermal test of which a cold & black background is one of the important technical specifications. A shroud and nitrogen system used to simulate a cold & black environment with the effective space of 8500 mm × 9000 mm are studied in this article. In terms of the design of the shroud of the large space simulator, we should not only consider heat exchange and temperature uniformity, but also the feasibility of manufacture, transportation and installation. The cooling system adopts single-phase closed loop cycle. Based on the result of the test, it can be concluded that test data accord with the computational simulation result. The average temperature is 90 K and the temperature uniformity of the shroud meets the technical requirement.

Shroud

Black box

Space environment

10.1016/j.phpro.2015.06.120

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A novel AC Protection Scheme in electronic power system

IOP Conference Series Earth and Environmental Science (2021)

Hongming Shen Peng Liu Ziqi Wang Min Liu Na Du

Abstract The application of a large number of power electronic devices has caused great changes in the fault characteristics of the AC system, and the existing protection schemes are facing great challenges. This paper first analyzes the transient current waveform characteristics of AC line faults in different scenarios such as pure AC system, DC transmission system, and new energy grid connection, and then uses the correlation coefficient to identify the transient current waveform, and a new protection principle is proposed. Finally, the new protection scheme requirements on the transformer, sampling frequency and data window length are analyzed. The correctness of the analysis conclusion is verified based on EMTDC / PSCAD simulation.

Transient (computer programming)

Transmission system

Power grid

10.1088/1755-1315/645/1/012003

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A Novel Sidelobe Reduction Algorithm Based on Two-Dimensional Sidelobe Correction Using D-SVA for Squint SAR Images

Sensors (2018)

Min Liu Zhou Li Lu Liu

Sidelobe reduction is a very primary task for synthetic aperture radar (SAR) images. Various methods have been proposed for broadside SAR, which can suppress the sidelobes effectively while maintaining high image resolution at the same time. Alternatively, squint SAR, especially highly squint SAR, has emerged as an important tool that provides more mobility and flexibility and has become a focus of recent research studies. One of the research challenges for squint SAR is how to resolve the severe range-azimuth coupling of echo signals. Unlike broadside SAR images, the range and azimuth sidelobes of the squint SAR images no longer locate on the principal axes with high probability. Thus the spatially variant apodization (SVA) filters could hardly get all the sidelobe information, and hence the sidelobe reduction process is not optimal. In this paper, we present an improved algorithm called double spatially variant apodization (D-SVA) for better sidelobe suppression. Satisfactory sidelobe reduction results are achieved with the proposed algorithm by comparing the squint SAR images to the broadside SAR images. Simulation results also demonstrate the reliability and efficiency of the proposed method.

Apodization

10.3390/s18030783

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Citations (4)