Study on Operation Parameter Characteristics of Induction Filter Distribution Transformer in Low-Voltage Distribution Network

Zhang, Xiao; Li, Changyi; Li, Delu; Jiang, Su

doi:10.1109/access.2021.3083750

Cited by 7 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the valve side, the triangular connection is adopted to shield the 3rd harmonic and suppress the influence of zero sequence current [21]. In the LV distribution network, in order to obtain two voltages on the load side, the transformer winding generally adopts Dy wiring, which is mainly because the star connected on the load side has stronger capacity than the unbalanced load connected in triangle, and the three-phase unbalanced load needs to be grounded, which can meet the needs of urban power distribution [22,23].…”

Section: Introductionmentioning

confidence: 99%

Design of a Low-Voltage Distribution Transformer Based on Inductive Filtering

Deng

et al. 2022

Teh. vjesn.

View full text Add to dashboard Cite

Adopting the connection group structure of Dd0yn11, this paper designs a novel low-voltage (LV) distribution transformer (DT) based on inductive filtering (IF), and verifies the proposed transformer through a comprehensive innovation experiment. Firstly, the functional relationship between valve-side harmonic current and grid-side current was derived according to the winding model, and the filtering features were obtained to compute the impedance between the valve-and grid-side windings. Next, the design calculation was carried out by the engineering magnetic circuit (EMC) method. After that, a three-dimensional (3D) model was established for the proposed transformer on ANSYS Maxwell. The simulation results show that the proposed transformer meets the design requirements on the relevant parameters, and eliminates the harmonic pollution in the grid. Finally, the proposed transformer was proved correct and effective through experiments, and found to stimulate studentsꞌ interest in learning and innovation.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of a Low-Voltage Distribution Transformer Based on Inductive Filtering

Deng

et al. 2022

Teh. vjesn.

View full text Add to dashboard Cite

show abstract

“…Overall, the inductive filter can inhibit harmonics and prevent them from flowing through the transformer's winding connected to distribution systems. It can thus reduce the harmonics' adverse impact on transformers [19].…”

Section: Introductionmentioning

confidence: 99%

An Inductive Active Filtering Method for Low-Voltage Distribution Networks

Zhang

Deng

et al. 2021

Machines

Self Cite

View full text Add to dashboard Cite

Three-phase unbalanced and nonlinear loads aggravate harmonic problems in low-voltage distribution networks. In this paper, a hybrid inductive and active filter (HIAF) system with a Ddy converter transformer is proposed. By establishing the circuit and corresponding mathematical models, the working mechanism of the HIAF system in harmonic suppression is analyzed. In the designed HIAF system, we install the detection point on the grid-side winding and the compensation point on the filtering winding. Since both windings have the same connection, no phase compensation between the harmonic detection point and compensation point is demanded. Eventually, we apply a harmonic damping control and zero-value impedance control strategy to realize harmonic suppression under both balanced and unbalanced loads. The simulation results show that the HIAF system can effectively suppress harmonics under various load conditions.

show abstract

Self-filtering based on the fault ride-through technique using a robust model predictive control for wind turbine rotor current

Achar,

Djeriri,

Benbouhenni

et al. 2024

Sci Rep

View full text Add to dashboard Cite

This paper studies the possibility of connecting Wind Farms (WF) to the electric grid with the use of finite space model predictive command (FS-MPC) to manage wind farms to improve the quality of the current output from the doubly-fed induction generator (DFIG) with considering fault ride-through technique. This proposed system can generate active power and enhance the power factor. Furthermore, the reduction of harmonics resulting from the connection of non-linear loads to the electrical grid is achieved through the self-active filtering mechanism in DFIGs-WF, facilitated by the now algorithm proposed. FS-MPC technique has the ability to improve system characteristics and greatly reduce active power ripples. Therefore, MATLAB software is used to implement and verify the safety, performance, and effectiveness of this designed technique compared to the conventional strategy. The results obtained demonstrated the effectiveness of the proposed algorithm in handling the four operational modes (Maximum power point tracking, Delta, Fault, and Filtering). Additionally, the suggested technique exhibited flexibility, robustness, high accuracy, and fast dynamic response when compared to conventional strategies and some recently published scientific works. On the other hand, the THD value of the current was significantly reduced, obtaining at one test time the values 56.87% and 0.32% before and after filtering, respectively 27.50% and 0.26% at another time of testing, resulting in an estimated THD reduction percentage of 99.43% and 99.05%, respectively. These high percentages prove that the quality of the stream is excellent after applying the proposed strategy.

show abstract

Study on Operation Parameter Characteristics of Induction Filter Distribution Transformer in Low-Voltage Distribution Network

Cited by 7 publications

References 23 publications

Design of a Low-Voltage Distribution Transformer Based on Inductive Filtering

Design of a Low-Voltage Distribution Transformer Based on Inductive Filtering

An Inductive Active Filtering Method for Low-Voltage Distribution Networks

Self-filtering based on the fault ride-through technique using a robust model predictive control for wind turbine rotor current

Contact Info

Product

Resources

About