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Author details

Wenzhong Gao

Also published under: W. Gao, Wen-Zhong Gao, Wen-zhong Gao

Publications

116

Citations

2,645

Publications by Year

20032025

Co-Authors:

Frhat AeiadAbdullah M. AlharbiFahad M. AlmasoudiIbrahim AlsaidanHamed Babazadeh

Show All Co-Authors (173)

Wenzhong Gao

Also published under: W. Gao, Wen-Zhong Gao, Wen-zhong Gao

Affiliation

Department of Electrical and Computer Engineering

University of Denver

Denver, CO, USA

Publication Topics

Power System,
Component Parameters,
Data Window,
Discrete Fourier Transform,
Electrical Load,
Instantaneous Signal,
Oscillatory Components,
Parameter Identification,
Phasor Measurement Units,
Power Grid,
Spectral Leakage,
Accurate Identification

Biography

Wenzhong (David) Gao (SM’03) received the M.S. and Ph.D. degrees in electric power engineering from Georgia Institute of Technology, Atlanta, GA, USA, in 1999 and 2002, respectively.,He is currently an Associate Professor in the Department of Electrical and Computer Engineering, University of Denver, Denver, CO, USA. His research interests are renewable energy, smart grid, and power system analysis.(Based on document published on 30 April 2015).

Publications

116

Citations

2,645

Publications by Year

20032025

Co-Authors:

Frhat Aeiad
Abdullah M. Alharbi
Fahad M. Almasoudi
Ibrahim Alsaidan
Hamed Babazadeh

Show All Co-Authors (173)

Author's Published Works

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Showing 1-20 of 20 results

Conferences (13)

Journals (7)

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Xiong Li(20)
Yuanzhang Sun(10)
Deping Ke(5)
Jian Xu(5)
Lin Cheng(5)
School of Electrical Engineering, Wuhan University, Wuhan, China(7)
School of Electrical Engineering and Automation, Wuhan University, Wuhan, China(4)
Guizhou Electric Power Grid Dispatching and Control Center of CSG, Guiyang, Guizhou, China(2)
Wuhan University, School of Electrical Engineering, Hubei, Wuhan, China(2)
Tsinghua University, State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment, Beijing, China(2)
IEEE Transactions on Power Systems(5)
2009 Asia-Pacific Power and Energy Engineering Conference(4)
2016 IEEE Power and Energy Society General Meeting (PESGM)(2)
2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)(2)
2009 International Conference on Sustainable Power Generation and Supply(1)
IEEE(20)
Wuhan, China(4)
Boston, MA, USA(2)
Chicago, IL, USA(2)
Nanjing, China(2)
Chengdu, China(1)
Power System(16)
Wind Farm(7)
Wind Power(7)
Phasor Measurement Units(6)
Power Grid(5)

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Results

Comprehensive Benefit Evaluation of Distributed Photovoltaic Power Generation System with DC Interconnection Based on Benefit-Cost Ratio

Yingting Yu;Shiwen Wang;Qinyi Liu;Wenkun Zhu;Xiong Li

2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)

Year: 2021 | Conference Paper |

Cited by: Papers (1)

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In recent years, the rapid development of distributed power supply and the outstanding advantages of DC distribution network lead to the project of integrating distributed photovoltaic (DPV) into DC network emerging at the right moment. Due to the related price reduction policy of PV power generation, the unmarketable price of the matched DC equipment, and the unclear impact of technical character...Show More

Comprehensive Benefit Evaluation of Distributed Photovoltaic Power Generation System with DC Interconnection Based on Benefit-Cost Ratio

Yingting Yu;Shiwen Wang;Qinyi Liu;Wenkun Zhu;Xiong Li

2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)

Year: 2021 | Conference Paper |

A Novel Efficient Bidirectional T-source Circuit Breaker for Low Voltage DC Distribution Network

Yuan Song;Yingting Yu;Shiwen Wang;Qinyi Liu;Xiong Li

2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

Year: 2021 | Conference Paper |

Cited by: Papers (4)

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Low voltage DC distribution networks have flexible access to distributed generations, energy storage devices and DC loads, which have been widely developed. T-source circuit breaker can solve the problems of DC distribution network protection. Compared with Z-source circuit breakers, T-source circuit breaker has the advantages of common ground, zero reflected current and low-pass filtering. Howeve...Show More

A Novel Efficient Bidirectional T-source Circuit Breaker for Low Voltage DC Distribution Network

Yuan Song;Yingting Yu;Shiwen Wang;Qinyi Liu;Xiong Li

2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

Year: 2021 | Conference Paper |

Parameter Design of Capacitor for Z-source Circuit Breakers Considering the Influence of Line Resistance and Inductance

Yuan Song;Yingting Yu;Shiwen Wang;Yu Lei;Xiong Li

2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

Year: 2021 | Conference Paper |

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The line inductance and resistance will interact with the energy storage capacitor of the Z-source circuit breakers in practical applications, which will increase the possibility of mal-operation and non-operation of Z-source circuit breakers. Therefore, line parameters should be considered in the parameters design process. In this paper, the load capacitance is equivalent to a time-varying voltag...Show More

Parameter Design of Capacitor for Z-source Circuit Breakers Considering the Influence of Line Resistance and Inductance

Yuan Song;Yingting Yu;Shiwen Wang;Yu Lei;Xiong Li

2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

Year: 2021 | Conference Paper |

Lifetime Estimation for Aluminum Electrolytic Capacitors in Active Power Filter

Zewei Hao;Yi Liu;Jinwu Gong;Meng Huang;Yingting Yu;Xiaoming Zha;Xiong Li

2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)

Year: 2020 | Conference Paper |

Cited by: Papers (1)

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Reliability issues brought by the lifetime of Aluminum electrolytic capacitors (Al E-Caps) in the DC bank of power electronics equipment has captured attention recently. In the active power filter (APF), the Al E-Caps in the DC bank suffers harmonics on a broader spectrum, and this makes the reliability issues in this application more critical. In this paper, the harmonic currents are quantitative...Show More

Lifetime Estimation for Aluminum Electrolytic Capacitors in Active Power Filter

Zewei Hao;Yi Liu;Jinwu Gong;Meng Huang;Yingting Yu;Xiaoming Zha;Xiong Li

2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)

Year: 2020 | Conference Paper |

A Prediction-Based Hierarchical Delay Compensation (PHDC) Technique Enhanced by Increment Autoregression Prediction for Wide-Area Control Systems

Fang Zhang;Lin Cheng;Xiong Li;Yuan-Zhang Sun

IEEE Transactions on Smart Grid

Year: 2020 | Volume: 11, Issue: 2 | Journal Article |

Cited by: Papers (9)

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In a wide-area control system (WACS) of power systems, delays will affect the control performance. Dealing with randomly distributed delays besides achieving desired control performance via the WACS control strategy will make the control strategy design more challenging. Moreover, delays from the centralized controller to actuators in WACS are unknown for the controller when calculating the contro...Show More

A Prediction-Based Hierarchical Delay Compensation (PHDC) Technique Enhanced by Increment Autoregression Prediction for Wide-Area Control Systems

Fang Zhang;Lin Cheng;Xiong Li;Yuan-Zhang Sun

IEEE Transactions on Smart Grid

Year: 2020 | Volume: 11, Issue: 2 | Journal Article |

A Coordinated Marginal Current Control Method for LCC-HVDC

Jian Xu;Tiankai Lan;Siyang Liao;Yuanzhang Sun;Deping Ke;Xiong Li;Jun Yang;Xiaotao Peng;Liping Sima

IEEE Transactions on Power Systems

Year: 2019 | Volume: 34, Issue: 6 | Journal Article |

Cited by: Papers (16)

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Line-commutated-converter-based HVdc (LCC-HVdc) is extensively used in modern power systems. Most of the LCC-HVdcs are implemented with the control strategy termed marginal current control method (MCCM), while their operation is sensitive to disturbance from the ac part of the system. This paper originally reveals the mechanism of two types of oscillations induced by the MCCM after ac disturbances...Show More

A Coordinated Marginal Current Control Method for LCC-HVDC

Jian Xu;Tiankai Lan;Siyang Liao;Yuanzhang Sun;Deping Ke;Xiong Li;Jun Yang;Xiaotao Peng;Liping Sima

IEEE Transactions on Power Systems

Year: 2019 | Volume: 34, Issue: 6 | Journal Article |

Field Verification of Frequency Control by Energy-Intensive Loads for Isolated Power Systems With High Penetration of Wind Power

Yi Bao;Jian Xu;Siyang Liao;Yuanzhang Sun;Xiong Li;Yazhou Jiang;Deping Ke;Jun Yang;Xiaotao Peng

IEEE Transactions on Power Systems

Year: 2018 | Volume: 33, Issue: 6 | Journal Article |

Cited by: Papers (36)

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Frequency control of isolated power systems with high penetration of wind power is a challenging task for system operators. The difficulty results from the limited frequency response capability of thermal power units to keep up with the fluctuations of wind power. This paper develops a field verification architecture to leverage aluminum smelting loads (ASLs) to participate in primary frequency co...Show More

Field Verification of Frequency Control by Energy-Intensive Loads for Isolated Power Systems With High Penetration of Wind Power

Yi Bao;Jian Xu;Siyang Liao;Yuanzhang Sun;Xiong Li;Yazhou Jiang;Deping Ke;Jun Yang;Xiaotao Peng

IEEE Transactions on Power Systems

Year: 2018 | Volume: 33, Issue: 6 | Journal Article |

Look-Ahead Economic Dispatch With Adjustable Confidence Interval Based on a Truncated Versatile Distribution Model for Wind Power

Chenghui Tang;Jian Xu;Yuanzhang Sun;Ji Liu;Xiong Li;Deping Ke;Jun Yang;Xiaotao Peng

IEEE Transactions on Power Systems

Year: 2018 | Volume: 33, Issue: 2 | Journal Article |

Cited by: Papers (64)

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Wind power representation is an integral part of stochastic economic dispatch (ED). Compared with the deterministic approach, stochastic ED allocates system reserves more effectively. This improved reserve strategy heavily relies on the wind power distribution boundary area that is not consistent with classical unbounded distribution models. To address this issue, this paper proposes a new probabi...Show More

Look-Ahead Economic Dispatch With Adjustable Confidence Interval Based on a Truncated Versatile Distribution Model for Wind Power

Chenghui Tang;Jian Xu;Yuanzhang Sun;Ji Liu;Xiong Li;Deping Ke;Jun Yang;Xiaotao Peng

IEEE Transactions on Power Systems

Year: 2018 | Volume: 33, Issue: 2 | Journal Article |

A Versatile Mixture Distribution and Its Application in Economic Dispatch with Multiple Wind Farms

Chenghui Tang;Jian Xu;Yuanzhang Sun;Ji Liu;Xiong Li;Deping Ke;Jun Yang;Xiaotao Peng

IEEE Transactions on Sustainable Energy

Year: 2017 | Volume: 8, Issue: 4 | Journal Article |

Cited by: Papers (22)

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An improved versatile distribution for wind power is proposed, with higher representation accuracy and more suitable applications in economic dispatch (ED) compared with Versatile distribution. Further, versatile mixture distribution (VMD) is proposed to represent all possible wind power distribution with customized arbitrary errors. Compared with Gaussian Mixture distribution (GMD), it has more f...Show More

A Versatile Mixture Distribution and Its Application in Economic Dispatch with Multiple Wind Farms

Chenghui Tang;Jian Xu;Yuanzhang Sun;Ji Liu;Xiong Li;Deping Ke;Jun Yang;Xiaotao Peng

IEEE Transactions on Sustainable Energy

Year: 2017 | Volume: 8, Issue: 4 | Journal Article |

Estimation and measurement of closed-loop delays in the actual WACS of Guizhou Power Grid

Fang Zhang;Lin Cheng;Xiong Li;Min Zeng;Yuanzhang Sun;Joe H. Chow

2016 IEEE Power and Energy Society General Meeting (PESGM)

Year: 2016 | Conference Paper |

Cited by: Papers (3)

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The characterization of the closed-loop delays in a wide-area control system (WACS) is an important foundation for further research. The method to estimate and measure the closed-loop delay in actual WACSs were proposed in this paper. Then, the closed-loop delays in the actual WACS in Guizhou Power Grid in China were measured and analyzed. Also, the measured delays were used to verify the normal d...Show More

Estimation and measurement of closed-loop delays in the actual WACS of Guizhou Power Grid

Fang Zhang;Lin Cheng;Xiong Li;Min Zeng;Yuanzhang Sun;Joe H. Chow

2016 IEEE Power and Energy Society General Meeting (PESGM)

Year: 2016 | Conference Paper |

An industrial verification of frequency regulation by electrolytic aluminum in an isolated power system

Yi Bao;Jian Xu;Yuanzhang Sun;Xiong Li;Siyang Liao;Deping Ke;Yinpeng Qu;Yibo Jiang

2016 IEEE Power and Energy Society General Meeting (PESGM)

Year: 2016 | Conference Paper |

Cited by: Papers (4)

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Efficient utilization of large-scale wind power is crucial to make the power industry economical and environment friendly. One way to consume wind power is through constructing isolated power systems with wind power supplying high energy consumption industries directly. However, one key issue, which limits the isolated power system for industry-wide application is to maintain the system frequency ...Show More

An industrial verification of frequency regulation by electrolytic aluminum in an isolated power system

Yi Bao;Jian Xu;Yuanzhang Sun;Xiong Li;Siyang Liao;Deping Ke;Yinpeng Qu;Yibo Jiang

2016 IEEE Power and Energy Society General Meeting (PESGM)

Year: 2016 | Conference Paper |

Measurement and Modeling of Delays in Wide-Area Closed-Loop Control Systems

Fang Zhang;Yuanzhang Sun;Lin Cheng;Xiong Li;Joe H. Chow;Weixing Zhao

IEEE Transactions on Power Systems

Year: 2015 | Volume: 30, Issue: 5 | Journal Article |

Cited by: Papers (101)

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This paper aims to study the measurement and modeling methods for delays in wide-area closed-loop control systems (WACS). The delays are classified into communication delays and operational delays based on the information flow of WACS. For communication delays, an affine evaluation model is proposed based on previous studies, and this model is verified by the measured communication delays of the G...Show More

Measurement and Modeling of Delays in Wide-Area Closed-Loop Control Systems

Fang Zhang;Yuanzhang Sun;Lin Cheng;Xiong Li;Joe H. Chow;Weixing Zhao

IEEE Transactions on Power Systems

Year: 2015 | Volume: 30, Issue: 5 | Journal Article |

Application of a Real-Time Data Compression and Adapted Protocol Technique for WAMS

Fang Zhang;Lin Cheng;Xiong Li;Yuanzhang Sun;Wenzhong Gao;Weixing Zhao

IEEE Transactions on Power Systems

Year: 2015 | Volume: 30, Issue: 2 | Journal Article |

Cited by: Papers (65)

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This paper proposes a real-time data compression and adapted protocol technique for wide-area measurement systems (WAMS). The compression algorithm combines exception compression (EC) with swing door trending (SDT) compression. The compression logic is designed to perform this algorithm in real time. Selection of compression parameters and data reconstruction are presented. An adapted protocol is ...Show More

Application of a Real-Time Data Compression and Adapted Protocol Technique for WAMS

Fang Zhang;Lin Cheng;Xiong Li;Yuanzhang Sun;Wenzhong Gao;Weixing Zhao

IEEE Transactions on Power Systems

Year: 2015 | Volume: 30, Issue: 2 | Journal Article |

Networked control system based wide-area power system stabilizer application in Guizhou Power Grid

Fang Zhang;Yuanzhang Sun;Lin Cheng;Xiong Li

2014 IEEE PES General Meeting | Conference & Exposition

Year: 2014 | Conference Paper |

Cited by: Papers (3)

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The implements of the wide-area control systems (WACS) are still great challenges. This paper proposed an application of a wide-area power system stabilizer (WPSS) system in Guizhou Power Grid (GPG) in southwest China. The structure of WPSS is introduced with newly designed networked control unit (NCU) and implement of downlink communication. Also, several key techniques for this application are i...Show More

Networked control system based wide-area power system stabilizer application in Guizhou Power Grid

Fang Zhang;Yuanzhang Sun;Lin Cheng;Xiong Li

2014 IEEE PES General Meeting | Conference & Exposition

Year: 2014 | Conference Paper |

Frequency modeling of wind power fluctuation and the application on power systems

Jin Lin;Yuan-zhang Sun;Poul Sørensen;Guo-jie Li;Xiong Li

2010 International Conference on Power System Technology

Year: 2010 | Conference Paper |

Cited by: Papers (15)

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System imbalance due to power fluctuation is the first concern of power grid with large scale wind power integration. Traditional studies are limited in time domain, where the modeling is not convenient enough. In this paper, a model based on frequency domain is proposed. This model is more precise, and capable to take some important factors, such as the layout of wind farm, into account. This pap...Show More

Frequency modeling of wind power fluctuation and the application on power systems

Jin Lin;Yuan-zhang Sun;Poul Sørensen;Guo-jie Li;Xiong Li

2010 International Conference on Power System Technology

Year: 2010 | Conference Paper |

A review on the integration of wind farms with variable speed wind turbine systems into power systems

Yuan-zhang Sun;Jin Lin;Guo-jie Li;Xiong Li

2009 International Conference on Sustainable Power Generation and Supply

Year: 2009 | Conference Paper |

Cited by: Papers (1)

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With the development of wind energy and power electric control technology, more wind farms with variable speed wind turbine systems (VSWTS) are integrated into power grids. While VSWTSs improve the stability and power quality of systems, several new problems are introduced in power grid. This paper provides an overview to the relevant latest research issues related to the integration of wind farms...Show More

A review on the integration of wind farms with variable speed wind turbine systems into power systems

Yuan-zhang Sun;Jin Lin;Guo-jie Li;Xiong Li

2009 International Conference on Sustainable Power Generation and Supply

Year: 2009 | Conference Paper |

Research and Analyse for Pressurized Water Reactor Plant into Power System Dynamics Simulation

Xiong Li;Dichen Liu;Xi Shi;Jie Zhao;Ping Wu

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

Cited by: Papers (1)

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The nuclear power plants are being constructed and operated widely in recent years. Consequently, it is necessary to study nuclear power plants (NPPs) dynamic characteristics and power system dynamics simulations with nuclear plant after NPPs has been introduced into power system. At first, the paper presents functional description of NPP. Then a detailed and new models of generating plant with PW...Show More

Research and Analyse for Pressurized Water Reactor Plant into Power System Dynamics Simulation

Xiong Li;Dichen Liu;Xi Shi;Jie Zhao;Ping Wu

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

Modeling and Dynamic Analysis of Nuclear Power Plant Reactor Based on PSASP

Xi Shi;Ping Wu;Dichen Liu;Xiong Li;Jie Zhao;Yuanyuan Zhang;Zunlian Zhao

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

Cited by: Papers (1)

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In this paper, we propose a dynamic mathematical model for nuclear power plant (NPP) reactor, and give an implementation in Power System Analysis Software Package (PSASP) through a user-defined program. NPP is modeled with a bipartite model that consists of the neutron dynamics module and thermodynamics module. Through the simulation results of NPP reactor under different disturbances, a conclusio...Show More

Modeling and Dynamic Analysis of Nuclear Power Plant Reactor Based on PSASP

Xi Shi;Ping Wu;Dichen Liu;Xiong Li;Jie Zhao;Yuanyuan Zhang;Zunlian Zhao

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

An Improved Ant Colony System in Optimizing Power System PMU Placement Problem

Bo Wang;Dichen Liu;Xiong Li

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

Cited by: Papers (14)

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GPS-based synchronous phasor measurement technology is a powerful tool for the security and reliable operation of the inter-connected electric power system. This paper presents an ACO-based approach to optimize the phasor measurement unit (PMU) placement problem. The pheromone trail persistence coefficient adaptive adjustment mechanism and stochastic perturbing progress are introduced into the ant...Show More

An Improved Ant Colony System in Optimizing Power System PMU Placement Problem

Bo Wang;Dichen Liu;Xiong Li

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

A Novel Control Strategy for DFIG Based on Magnitude and Frequency of Rotor Voltage for Wind Power Generation

Zhong Wang;Yuanzhang Sun;Guojie Li;Xiong Li

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

Cited by: Papers (1)

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A magnitude and frequency control (MFC) strategy has been proposed for a doubly fed induction generator (DFIG). The proposed MFC is to make the DFIG equivalent to a synchronous generator in power system. It is found that the stator active and reactive powers depend on the phase and magnitude of the internal transient electro-magnetic field (EMF). The relationship between the rotor voltage and the ...Show More

A Novel Control Strategy for DFIG Based on Magnitude and Frequency of Rotor Voltage for Wind Power Generation

Zhong Wang;Yuanzhang Sun;Guojie Li;Xiong Li

2009 Asia-Pacific Power and Energy Engineering Conference

Year: 2009 | Conference Paper |

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