A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads

Chen, Yuehui; Zhao, Huahua; Duan, Zhenfeng; Fu, Ping; Zhou, Guandong; Luo, Longfu

doi:10.3390/en12102021

Cited by 13 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nonlinear load is an unstable source in power grid; when a large number of harmonic currents are injected into the power grid, it will cause voltage flicker, frequency fluctuation, three-phase voltage, and current imbalance, which seriously affect the transmission efficiency and the operation safety of equipment [20,21]. Scientific and reasonable prediction and analysis of nonlinear load harmonics can effectively help power companies to formulate corresponding effective transmission strategies and ensure the stable and efficient operation of the distribution system [22].…”

Section: Related Workmentioning

confidence: 99%

Nonlinear Load Harmonic Prediction Method Based on Power Distribution Internet of Things

Dong

Zhang

et al. 2021

Scientific Programming

View full text Add to dashboard Cite

A large number of nonlinear loads have an impact on the stable operation of the power system. To solve this problem, this article proposes a nonlinear load harmonic prediction method based on the architecture of Power Distribution Internet of Things. Firstly, this method integrates the characteristics of edge computing technology and Power Distribution Internet of Things technology and proposes a Power Distribution Internet of Things framework applied to nonlinear load harmonic prediction, which provides top-level design for subsequent harmonic prediction methods of Power Distribution Internet of Things; then, considering the electrical characteristics of the typical nonlinear load, the mathematical model of nonlinear load data is constructed based on the harmonic coupling admittance matrix model on the edge side. At the same time, a nonlinear load harmonic prediction model based on dynamic time warping and long-term and short-term memory network (DTW-LSTM) is established in the cloud computing center to realize high accuracy and high real-time prediction and analysis of nonlinear load harmonics. Finally, the simulation results based on the general data set show that the MAE evaluation index of the proposed method is less than 5% in the experimental group, which shows good generalization ability, and has some advantages over the current method in operation efficiency.

show abstract

Section: Related Workmentioning

confidence: 99%

Nonlinear Load Harmonic Prediction Method Based on Power Distribution Internet of Things

Dong

Zhang

et al. 2021

Scientific Programming

View full text Add to dashboard Cite

show abstract

“…Short-circuit impedance of transformer is of greatly important characteristic parameters for the operation of power system supplying nonlinear loads [17]- [19], especially for the FW-IFT, which directly influences its filtering performance and the capability of reactive power compensation. As for the three-winding transformer shown in Fig.1, this transformer adopts wye/wye/delta-connected winding, and corresponding short-circuit impedance parameter has been reported in the literatures [20], [21].…”

Section: B Short-circuit Impedance Of the Fw-iftmentioning

confidence: 99%

Study on Characteristic Parameters of Short-Circuit Impedance for a Four-Winding Inductive Filtering Transformer in Power System Supplying Nonlinear Loads

et al. 2019

Self Cite

View full text Add to dashboard Cite

Different from a three-winding transformer and ac passive filtering method, this paper proposes an inductive filtering (IF) method with a four-winding inductive filtering transformer (FW-IFT) for power system supplying nonlinear loads. Based on this, the characteristic parameters of the short-circuit impedance for the FW-IFT are studied in detail by theoretical analysis and experimental verification. According to the single-phase equivalent circuit, the voltage equations of the FW-IFT are established at the fundamental and harmonic frequencies. By short-circuit test, the constraint condition of the inductive filtering is obtained, which can satisfy the demand of nonlinear loads in power system. Then, the influences of the filter impedance on characteristic parameter of the short-circuit impedance are analyzed and calculated. The detailed theoretical calculation and the experimental results verified the feasibility and correctness of the aforementioned theoretical analysis and calculation. INDEX TERMS Four-winding inductive filtering transformer, inductive filtering, short-circuit impedance, equivalent circuit, theoretical analysis.

show abstract

“…Active Power Filters (APF) are based on the injection of the compensating current of the same magnitude into the power network and the opposite sign to eliminate the harmonics. This survey's passive filter cycle had issues with complicated filter capacity, instability and resonance components due to load conditions [8]. Another technique developed due to this analysis is Active Power Filter shunt and its sequences.…”

Section: Introductionmentioning

confidence: 99%

Design and Simulation of Hybrid Shunt Active Filter for PQ Improvement using PID Genetic Algorithm Controller in 3ϕ-4 Wire System

Sugavanam,

Selvaraju,

Chandrika

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

This paper provides an economical solution and advanced method by tuning and optimizing system for power in the transmission line. The proposed system uses PID Genetic Algorithm (GA) controller in three phase four wire system for Total Harmonic Distortion (THD) minimization under balanced load conditions. In this article, traction load model is taken into consideration to evaluate the designed Shunt Active Power Filter (SAPF) for reduction of harmonics in three phase four wire system. Many existing SAPF models were tested using non-linear diode rectifier load for analysis. The GA technique for the reduction of harmonics is used to tune PID parameters such as a proportional (Kp), Integrator (Ki), and Derivative (Kd). In contrast with other controllers such as PI Controller, Fuzzy Logic Controller (FLC), Hysteresis Controller (HC), Sliding Mode Controller (SMC) and Synchronous Reference Frame Theory (SRFT), the performance of the proposed controller is compared. The performance of the designed controller with GA adjusted PID is validated at various loading conditions by comparing it to the performance of the existing system. The outcomes are addressed to demonstrate the effectiveness of the created system.

show abstract

A Four-Winding Inductive Filtering Transformer to Enhance Power Quality in a High-Voltage Distribution Network Supplying Nonlinear Loads

Cited by 13 publications

References 22 publications

Nonlinear Load Harmonic Prediction Method Based on Power Distribution Internet of Things

Nonlinear Load Harmonic Prediction Method Based on Power Distribution Internet of Things

Study on Characteristic Parameters of Short-Circuit Impedance for a Four-Winding Inductive Filtering Transformer in Power System Supplying Nonlinear Loads

Design and Simulation of Hybrid Shunt Active Filter for PQ Improvement using PID Genetic Algorithm Controller in 3ϕ-4 Wire System

Contact Info

Product

Resources

About