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An Enhanced Matrix Pencil Method for Parameter Identification of Sub-/ Super-Synchronous Oscillations Using Synchrophasors
Subsynchronous oscillations (SSOs) induced by the integration of high renewable energy penetration have significantly impacted the operation of power systems. This article proposed an enhanced matrix pencil method (MPM) for online monitoring of SSO using synchrophasors. To address the issue of eigenvalues of complex-domain matrix pencil not satisfying the conjugate frequency constraints of the syn...Show More
An Improved Interpolated DFT-Based Parameter Identification for Sub-/Super-Synchronous Oscillations With Synchrophasors
The sub-synchronous resonance oscillations (SSO) caused by considerable renewable energy generations and power electronic devices seriously affect power system stability. Synchrophasor-based SSO parameter identification can effectively monitor SSOs. Aiming at the fundamental and frequency-coupled sub-/super-synchronous components that appear simultaneously in SSOs, an improved parameter identifica...Show More
Parameter Identification With Synchrophasor Trajectory Fitting Technique for Sub-/Super-Synchronous Oscillations
IEEE Transactions on Power Systems
Cited by: Papers (4)
To enhance the real-time monitoring of sub-/super-synchronous oscillation dynamics by utilizing the advantages of wide-area time-synchronization and dynamic measurement of synchrophasor measurement data, the idea of a parameter identification algorithm with synchrophasor trajectory fitting (PTF) is proposed in this letter to identify the parameters of each component of the instantaneous signal dur...Show More
Extrapolation-based Real-time Phasor Data Compression Considering the Two-way Rotation Characteristics of Synchrophasors
2021 IEEE Power & Energy Society General Meeting (PESGM)
Year: 2021 | Conference Paper |
To deal with the time delay caused by data compressions for synchrophasors in phasor measurement units (PMUs), an extrapolation-based real-time phasor data compression (ER-PDC) was proposed in this paper. First, the two-way rotation characteristic of synchrophasors was analyzed to enhance the real-time extrapolation of phasor dynamic tracks. Then, the algorithm of phasor data compression and recon...Show More
Cross-areal Scheduling Strategy of Electric Taxi Clusters
Dawei He;Xiaojun Wang;Yizhi Zhang;Fang Zhang;Xihao Wang;Daiwen Peng;Ye Yang
2021 IEEE 4th International Electrical and Energy Conference (CIEEC)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
Compared with other electric vehicles, electric taxis charge more frequently due to public service. The charging behavior and mobility characteristics of electric taxi clusters will make them one of the flexible resources available for power grid operation and scheduling, and bring more scheduling possibilities. The behavior characteristics of the electric taxis is analyzed based on the empty-load...Show More
A Synchrophasor Data Compression Technique With Iteration-Enhanced Phasor Principal Component Analysis
Fang Zhang;Xiaojun Wang;Ying Yan;Jinghan He;Wenzhong Gao;Gang Chen
IEEE Transactions on Smart Grid
Cited by: Papers (9)
The phasor data were compressed as separated amplitudes and phases in previous synchrophasor data compression techniques. To utilize the spatial correlation and temporal continuity of synchrophasors for data compression, a phasor principal component analysis (PPCA) in the field of complex numbers is proposed to compress synchrophasors as a whole in this article. Then, an iterative phasor principal...Show More
Modeling of Spatial Distribution Characteristics of High Proportion Renewable Energy Based on Complex Principal Component Analysis
2020 IEEE Sustainable Power and Energy Conference (iSPEC)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
The optimal allocation of global energy resources is a cardinal direction of the energy system, and the forecasting of renewable energy generation power prediction is the basis of energy interconnection. In power forecasting, it is necessary to integrate multiple information to improve the accuracy. Thus, bringing data that has no impact on the outcome and leads to computationally intensive data. ...Show More
Research on Comprehensive Service System and Typical Application Scenarios of Urban Smart Energy System
Zhida Li;Chunyan Ma;Guanglin Sha;Fang Zhang;Caihong Zhao;Jinghan He
2020 IEEE Sustainable Power and Energy Conference (iSPEC)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
Urban energy consumption plays an important role in national energy consumption, and the particularity of the city and its status as the center of energy consumption determine its core position in the transformation of urban energy production and consumption. This article first clarifies the urban smart energy system that should be in the current technological environment, and then based on the in...Show More
Optimization of Heterogeneous Resources Combination using Virtual Power Plant based on Modern Portfolio Theory
2020 IEEE Sustainable Power and Energy Conference (iSPEC)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
In recent years, with the development of smart grid technologies, wind turbines, photovoltaics and other renewable energy sources as well as demand-side loads have participated in grid dispatching, resulting in increased complexity of energy flows in the grid. Distributed energy resources (DERs) differ in many dimensions, such as technical attributes, operating modes, and business objectives, and ...Show More
Optimal Sizing of Photovoltaic and Battery Energy Storage of Electric Vehicle Charging Station Based on Two-part Electricity Pricing
2020 IEEE Sustainable Power and Energy Conference (iSPEC)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
This paper focuses on optimal sizing of photovoltaic (PV) and battery energy storage system (BESS) of special-use charging station for electric taxi cabs. Aiming to minimize annual equivalent cost of the charging station under two-part electricity pricing mechanism, an optimal sizing algorithm of PV and BESS is established considering the randomness of PV output and the power constraint of the gri...Show More
Synchronous Phasor Data Compression Based on Swing Door Trending in WAMS
Xiaojun Wang;Ying Yan;Fang Zhang;Syed Muhammad Rizvi;Jinghan He;Guohong Wu
2020 IEEE Power & Energy Society General Meeting (PESGM)
Year: 2020 | Conference Paper |
Cited by: Papers (2)
The large amount of data collected by the accessed phasor measurement units(PMUs) requires large storage space and may cause the communication system delay. This paper proposes a real-time synchronous phasor data compression based on swing door trending(PSDT) in the wide area measurement system(WAMS). The raw data comes from PMUs of a hydropower plant in Guizhou Power Grid in Southwest China. The ...Show More
Synchrophasors-Based Identification for Subsynchronous Oscillations in Power Systems
2020 IEEE Power & Energy Society General Meeting (PESGM)
Year: 2020 | Conference Paper |
The wide-area measurement system (WAMS) provides the synchronized dynamic measurement for power systems; however, the effective monitoring of subsynchronous oscillations (SSO) with WAMS has not been achieved. To achieve SSO monitoring based on the synchrophasors provided by WAMS, a synchrophasors-based SSO identification technique was proposed in this paper. On the basis of existed synchrophasors,...Show More
A Transfer Learning-Based High Impedance Fault Detection Method Under a Cloud-Edge Collaboration Framework
Yongjie Zhang;Xiaojun Wang;Jinghan He;Yin Xu;Fang Zhang;Yiping Luo
High impedance faults (HIFs) in distribution networks are hard to describe and be detected precisely because of the complexity and randomness of their features. Therefore, traditional feature analysis methods may lack sufficient reliability and generalization, which makes data-based methods a more appropriate option. However, according to previous statistical analyses, in practical scenarios, only...Show More
Distributed Control of VSC-MTDC Systems Considering Tradeoff Between Voltage Regulation and Power Sharing
This paper presents a novel distributed voltage control method for multi-terminal direct current (MTDC) systems based on the average consensus algorithm. The proposed method combines the idea of secondary integral voltage control and regulator synchronization problem. It realizes adjustable tradeoff between two conflicting control objectives, that is, voltage regulation and power sharing. The prop...Show More
A Prediction-Based Hierarchical Delay Compensation (PHDC) Technique Enhanced by Increment Autoregression Prediction for Wide-Area Control Systems
IEEE Transactions on Smart Grid
Cited by: Papers (9)
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
Dynamic Load Transfer Strategy of Campus Distribution Network Based on Genetic Algorithm
2019 IEEE 3rd International Electrical and Energy Conference (CIEEC)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
At present, the campus distribution network (CDN) has become an important part of the urban distribution network, but the transformation and upgrading of the distribution network cannot match the growth of the school electricity load. Therefore, there are many problems such as unbalanced load between transformers, excessive peak-and- valley difference within transformers and unbalanced three-phase...Show More
Research of Traffic Energy System and Optimization Operation Unified Model
2019 IEEE 3rd International Electrical and Energy Conference (CIEEC)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
As the integration of power systems and traffic systems accelerates, traffic energy systems are gradually taking shape. Firstly, the transformation of the traditional power system and traffic system to traffic energy system is expounded. Taking the transformation of private traffic as an opportunity, with the improvement of information sharing dimension, the architecture of traffic energy system i...Show More
Summary of Research on Power Boosting Technology of Distributed Mobile Energy Storage Charging Piles
2019 IEEE 3rd International Electrical and Energy Conference (CIEEC)
Year: 2019 | Conference Paper |
The rise and rapid development of the electric vehicle industry has made people's dependence on electric vehicles more and higher, and the accompanying range anxiety has become an urgent problem to be solved. The existing charging infrastructure is difficult to meet the needs of users for fast replenishment. Large-scale construction of DC charging piles has caused excessive demands on the distribu...Show More
Research on Orderly Electricity Consumption Management Strategy for Campus Dormitory
2019 IEEE 3rd International Electrical and Energy Conference (CIEEC)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
Electricity in student dormitory is an important part of campus electricity. The particularity of the campus student dormitory and the use of high-power equipment make the student dormitory consume a large amount of electricity, but electricity consumption is not efficient. The power supply of high-power equipment such as water boiler and air conditioners in the current student dormitory is contin...Show More
Optimization of Operation Strategy of Virtual Power Plants Involved in Peak Shaving
2019 IEEE 3rd International Electrical and Energy Conference (CIEEC)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
In recent years, as the consumption rate of renewable energy has increased, the impact of renewable energy on the power grid has also increased. Currently, distribution network system operators and transmission line system operators are unable to acquire and control the operational status of renewable energy sources such as wind power photovoltaics. These phenomena pose a significant challenge to ...Show More
Phasor Data Compression with Principal Components Analysis in Polar Coordinates for Subsynchronous Oscillations
Fang Zhang;Xiaojun Wang;Jinghan He;Ying Yan;Meng Li;Guomin Luo
2019 IEEE Power & Energy Society General Meeting (PESGM)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
In the previous studies, the phasor data are processed as the amplitudes and the phases separately since existing methods are in the field of real numbers. To take advantage of the correlations between amplitudes and phases of phasors, a phasor principal components analysis (PPCA) method in polar coordinates is proposed in this paper. In PPCA, the conventional principal components analysis (PCA) i...Show More
Synchrophasors-Based Identification for Subsynchronous Oscillations in Power Systems
IEEE Transactions on Smart Grid
Cited by: Papers (50)
The wide-area measurement system (WAMS) provides the synchronized dynamic measurement for power systems; however, the effective monitoring of subsynchronous oscillations (SSO) with WAMS has not been achieved. To achieve SSO monitoring based on the synchrophasors provided by WAMS, a synchrophasors-based SSO identification technique was proposed in this paper. On the basis of existed synchrophasors,...Show More
Augmented State Estimation Method for Fault Location Based on On-line Parameter Identification of PMU Measurement Data
2018 IEEE 2nd International Electrical and Energy Conference (CIEEC)
Year: 2018 | Conference Paper |
Cited by: Papers (7)
When a fault occurs in power grid, accurate and timely fault location is of great significance in reducing fault losses. With the rapid development of synchronous phasor measurement technology, the high-precision big data brought by the synchronous phasor measurement brings many possibilities to the on-line fault diagnosis of the distribution network. This paper proposed an augmented state estimat...Show More
A Novel Generation Rescheduling Algorithm to Improve Power System Reliability With High Renewable Energy Penetration
The uncertainties of renewable energy may bring impacts to power system reliability. This paper proposes a novel generation rescheduling algorithm, which adjusts generation outputs to mitigate the variations of branch power flows and relieve the overload probability. This algorithm helps prevent power congestion and balance the aggregate renewable generations and loads in power systems. Besides, t...Show More
Prediction Based Hierarchical Compensation for Delays in Wide-Area Control Systems
IEEE Transactions on Smart Grid
Cited by: Papers (11)
The closed-loop delay is one of the most important factors affecting the control performance of a wide-area control system (WACS), due to the network transmission of feedback and control signals. A prediction based hierarchical delay compensation (PHDC) method is proposed in this letter at the data processing level to deal with delays. For the control strategy on the top-level, all feedback and co...Show More
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