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Showing 1-25 of 6,708 resultsfor "Index Terms":Frequency Response Curve
"Index Terms":Frequency Response Curve
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An Improved UFLS Scheme based on Estimated Minimum Frequency and Power Deficit
Hassan Haes Alhelou;M.E.H. Golshan;R. Zamani;M. P. Moghaddam;Takawira C. Njenda;Pierluigi Siano;Mousa Marzband
In the event of a power system disturbance, it is important that the decision to implement under frequency load shedding is based on both the minimum frequency and the magnitude of the disturbance. In this paper, we propose the use of higher order polynomial curve fitting to estimate the minimum frequency. If the prediction shows that the minimum frequency threshold will be violated, the magnitude...Show More
Using impulse with appropriate repetition frequency in IFRA test to diagnosis winding deformation in transformer
Yi Q. Sun;Jie Zhang;Tao Cheng;Ning He;Yu X. Liao;Meng G. Zhou;Qi Xia
2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE)
Year: 2016 | Conference Paper |
Frequency response analysis (FRA) is a regular method to detect winding faults in transformer. According to the kind of excitation source, it can be divided into two categories that are impulse frequency response analysis (IFRA) and sweep frequency response analysis (SFRA). Compared with SFRA, IFRA use less time during test and can reach higher frequency domain it's about 10MHz, with SFRA usually ...Show More
Transformer Winding Deformation Diagnosis Based on Signal Distance
2019 22nd International Conference on Electrical Machines and Systems (ICEMS)
Year: 2019 | Conference Paper |
Aiming at the problem that the current frequency response method still lacks an effective tool for consistent quantitative evaluation in data analysis, and the correlation coefficient method cannot judge the deformation of the transformer winding when the measured frequency response curve is the same as the reference frequency response curve with the different amplitude, this paper proposed a new ...Show More
Actual Measurement and Analysis of Wind Power Plant Participating in Power Grid Fast Frequency Modulation Base on Droop Characteristic
2018 International Conference on Power System Technology (POWERCON)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
With the further growth of region wind power penetration rate, conventional generators are replaced by plenty of renewable energy generating, results in continued decline of power grid rotational inertia. Consequently, the frequency characteristic of power grid is trending downward. So it is an urgent need to study implementation of renewable energy generating units to participate in grid frequenc...Show More
Power System Frequency Dynamic Simulation Analysis and Tool Development of PSS/E
2021 IEEE 2nd International Conference on Information Technology, Big Data and Artificial Intelligence (ICIBA)
Year: 2021 | Conference Paper |
Cited by: Papers (3)
The continuous increase of the penetration of renewable energy sources makes system frequency dynamic behaviors change greatly under disturbance accidents. Obtaining system frequency response accurately is conductive to frequency dynamic behavior analysis and stability control strategies analysis. In this paper, PSS/E function extension is realized by using Python program to establish the auxiliar...Show More
Frequency Support Demand Analysis of High Non-synchronous Resource Penetration Receiving-end Power Grid Based on System Frequency Response Model
Bingjie Tang;Minhui Qian;Ning Chen;Jianhua Li;Huixing Li;Yanqiang Shi
2022 IEEE 6th Conference on Energy Internet and Energy System Integration (EI2)
Year: 2022 | Conference Paper |
With the increase in the scale of external High Voltage Direct Current (HVDC) transmission and renewable energy power generation in the receiving-end power grid, the problem of frequency stability has gradually become prominent. This paper analyzes and studies the frequency support demand of the receiving-end power grid for the typical scenario that the power shortage caused by the HVDC blocking f...Show More
A detection method for response time of overall primary frequency regulation of power grid
2017 IEEE Conference on Energy Internet and Energy System Integration (EI2)
Year: 2017 | Conference Paper |
Cited by: Papers (3)
In this paper, a deep information mining is carried out for the frequency variation data curve during grid power shortage based on the grid frequency control mechanism. Considering the difference characteristics of system frequency response process with or without a governor provided for the grid, it is proposed to use the grid failure frequency data with a high sampling rate measured and recorded...Show More
Frequency-Constrained Economic Dispatch Considering Demand-Side Resource Aggregation
2024 IEEE 7th Student Conference on Electric Machines and Systems (SCEMS)
Year: 2024 | Conference Paper |
The integration of a high proportion of renewable energies into the power grid significantly reduces the inertia level of the power system and brings foreseeable frequency security risks. In order to deal with this problem, it is necessary to explore the regulation potential of flexible resources on the demand side and work with traditional frequency regulation units to ensure the frequency stabil...Show More
Performance Analysis of Primary Frequency Response in the Indian Power Grid
Aman Gautam;Rohit Shukla;Rahul Shukla;Manas Rajan Chand;Pramod Singh;Vivek Pandey;S.C. Saxena
2024 International Conference on Smart Grid Synchronized Measurements and Analytics (SGSMA)
Year: 2024 | Conference Paper |
Frequency control is a fundamental aspect of power systems, acting as a critical indicator of the equilibrium between load and generation. The primary mission of any power system is to ensure that electricity is delivered to consumers at the specified frequency. Frequency variations are chiefly driven by fluctuating demands, shifts in generation sources, and the intermittent nature of renewable en...Show More
Fuzzy comprehensive evaluation for NC servo manual tuning based on frequency response
2012 IEEE International Conference on Mechatronics and Automation
Year: 2012 | Conference Paper |
In modern numeric control (NC) servo systems, manual tuning approaches are still dominant in servo parameters regulation due to systems' complexity. In manual tuning, it is not easy to evaluate the regulated systems from frequency responses. With regard to such problems, in this paper, we put forward a fuzzy comprehensive evaluation method, where three different features are proposed based on expe...Show More
The Study of Two Models for Power Transformer Winding Deformation
Danyang Zheng;Yangchun Cheng;Jiangang Bi;Wenzhi Chang;Guocheng Ding;Feifei Sun
2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE)
Year: 2020 | Conference Paper |
Transformer, one of the most important components in a power system, functions as the vital to the safety of power supply system. However, great economic losses and industrial accidents can result from transformer winding deformation. Therefore, it is quite essential to use a precise transformer model when taking simulation to diagnose the transformer winding deformation correctly and instantly. A...Show More
Improved Frequency Response Model for Power System with Photovoltaic Generation
2022 IEEE 5th International Electrical and Energy Conference (CIEEC)
Year: 2022 | Conference Paper |
With the gradual increase of renewable generation integration, power system with high-penetration photovoltaic(PV) integrated is one of the typical operating scenarios. Large-scale PV entry affects the dynamic frequency characteristics of the power system greatly. Based on the analysis of the insufficiency of the traditional power system frequency response (SFR) model, an improved SFR model of the...Show More
Wind - fire Coordination System Frequency Control Parameter Tuning Method
2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)
Year: 2020 | Conference Paper |
The large scale of renewable energy has brought new challenges to the frequency stability and higher requirements on frequency regulation capability. So it is necessary to control wind turbines to provide frequency regulation. Integrated inertial control can provide inertia support and primary frequency regulation for the power grid, and it can improve system frequency characteristics, which is an...Show More
Calculation of power systems inertia and frequency response
2018 IEEE Texas Power and Energy Conference (TPEC)
Year: 2018 | Conference Paper |
Cited by: Papers (14)
Fundamental changes are taking place in the way that electricity is produced and consumed. These changes are raising concerns related to the deterioration of Inertial and Frequency responses. This paper presents a method to calculate the value of these responses using the data from system disturbances that result in sudden loss of generation. The method has very modest data and computational requi...Show More
Dynamic Responses under an Islanded Frequency Control Mode of Bhutan Power Grid
2019 7th International Electrical Engineering Congress (iEECON)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
This paper investigates dynamic responses associated with the proposed frequency control schemes for islanding operation of Bhutan power grid after separation from Indian power grid. Since there is no complete dynamic model of Bhutan power grid being developed in the past, this dynamic model development is thus being conducted for the first time and, it entails collecting dynamic data from Bhutan ...Show More
Frequency Characteristics of Southwest Power Grid and Scheme of Over-Frequency Generator Tripping
Shaorong Cai;Yuxuan Tao;Li Shen;Zhenlin Ni;Jianliang Gao;Wenju Liang;Yiyu Wen
2021 IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia)
Year: 2021 | Conference Paper |
Based on the single machine model, the key factors affecting the frequency response of the system are studied, the expressions of the initial frequency change rate and the maximum frequency deviation after large disturbance are derived, and the mechanism of improving the frequency stability of conventional units and new energy frequency response, DC frequency modulation, load frequency response, e...Show More
Frequency Response and Its Improvement Using BESS in a Low Inertia Power System
Md. Nahid Haque Shazon;Hasin Mussayab Ahmed;Zarin Tasnim;Md. Ashikur Rahman;Nahid-Al-Masood
TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON)
Year: 2019 | Conference Paper |
Cited by: Papers (5)
The purpose of this paper is to explore the role of Battery Energy Storage System (BESS) in improving the frequency response of a low inertia power system. For the recent years, prolific amount of renewable energy resources that include wind and photovoltaic (PV) sources have been introduced in South Australian power system. These wind generators are mostly variable speed machines, hence they neit...Show More
A New Interpretation of FRA Results by Sensitivity Analysis Method of Two FRA Measurement Connection Ways
Song Wang;Shuhong Wang;Hanke Feng;Ze Guo;Shuang Wang;Hailin Li
IEEE Transactions on Magnetics
Cited by: Papers (17)
As a reliable and non-destructive technique, frequency response analysis (FRA) has been widely recognized for transformer winding deformation detection and assessment. In this paper, frequency response functions (FRFs) are obtained by two different FRA measurement connection ways, namely, end-to-end voltage ratio (EE) and transfer voltage (TF) ratio measurements. At the same time, according to the...Show More
The lack of technical specifications for mobile phones limits their potential for use in new localization systems based on using audio signal processing. One of the most important parameters is sensitivity to the frequencies used for localization. In this paper, we examine the missing frequency response data of commercially available smartphones. Our main goal was to identify sensitivity in the up...Show More
Frequency Response Curves of Windings with Bulge Deformation in Power Transformers
Danyang Zheng;Feifei Sun;Jiangang Bi;Guocheng Ding;Yangchun Cheng
2020 IEEE Electrical Insulation Conference (EIC)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
Transformer is one of the most important components in power system. However, great economic losses and industrial accidents can result from its faults, and one of the most serious of all faults is transformer winding deformation. And frequency response analysis (FRA) is gaining popularity in detecting power transformer winding deformation for its accuracy. And multi-conductor transmission line mo...Show More
Power System Multi-machine Frequency Response Model Aggregation of Thermal Power Unit and Hydro Turbine Generator
2020 7th International Conference on Information Science and Control Engineering (ICISCE)
Year: 2020 | Conference Paper |
Cited by: Papers (4)
The frequency response model is the main method to analyze power system frequency dynamic behavior, frequency security and stability control, and optimal control decision. This paper uses the mathematical method to analyze the transfer functions equivalence, which reduces the multi-machine system to an equivalent single-machine model. The equivalent equations of steam turbines and hydro-turbines, ...Show More
Role of HVDC Interconnection for Improving Frequency Response in a Low Inertia Power System
Nahid-Al-Masood;Shohana Rahman Deeba;Hasin Mussayab Ahmed;Md. Nahid Haque Shazon;Zarin Tasnim;Md. Ashikur Rahman
2018 10th International Conference on Electrical and Computer Engineering (ICECE)
Year: 2018 | Conference Paper |
Cited by: Papers (1)
The target of this research work is to investigate the role of High Voltage DC (HVDC) interconnection for enhancing frequency response in a low inertia grid. In recent times, installed capacity of wind and photovoltaic (PV) sources has significantly increased in South Australian power system. Most of these wind power plants deploy variable speed wind machines, whereas PV sources are predominantly ...Show More
Frequency response enhance control method based on two-step MPC for VSG
2019 IEEE 3rd Conference on Energy Internet and Energy System Integration (EI2)
Year: 2019 | Conference Paper |
Virtual synchronous generator (VSG) technology is ideal for inverter friendly access to the power grid. With the large-scale connection of grid-connected inverters to the grid, the frequency response of the power system has attracted more and more attention in recent years. In this paper, a two-step predictive control method based on model predictive control (MPC) is proposed, which can accurately...Show More
Design of Belt Pulley Absorber in the Automobile Engine Based on the Dynamic Analysis
2010 International Conference on Intelligent Computation Technology and Automation
Year: 2010 | Conference Paper |
This paper introduces the structure, requirements, working principle and design principles of the V-belt pulley absorber in the automobile engine. The formula has been deduced to generate the torsional vibration frequency response characteristics curve of the crankshaft in automobile engine. And the different influences to antivibration effect have been explained by the example that are caused by ...Show More
Analysis on the Contribution of Virtual Synchronous Generator Controlled Energy Storage System to Primary Frequency Modulation
2021 4th International Conference on Energy, Electrical and Power Engineering (CEEPE)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
Virtual Synchronous Generator (VSG) control has been applied to the Energy Storage System (ESS) to improve its frequency response characteristics. However, the influence mechanism of the control parameters of the VSG controlled ESS on the primary frequency modulation has not been analyzed in depth. An analysis method of the influence of the control parameters of the VSG controlled ESS on the prima...Show More
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