NDLI: Unbalanced responsibility division considering renewable energy integration

Content Provider	IET Digital Library
Author	Wang, Ying Yang, Yixuan Ma, Xiaoyang Yao, Wenxuan Wang, Hang Tang, Zao
Abstract	A reasonable division of the unbalanced contribution is the premise of responsibility division and mitigation. As a large amount of renewable energy integrates into the power system, the disturbance of the system increases and the system impedance is no longer much smaller than the load impedance. The traditional unbalanced responsibility division method is difficult to calculate accurately. This study proposes a new method for calculating unbalanced contribution, which can effectively avoid the limitations of traditional methods. The robust independent component analysis is used to estimate the equivalent source signal. The sparse component analysis method is used to construct the screening criterion to screen the equivalent source signals to obtain estimated signals that are more in line with the real source signals. Then the equivalent negative sequence impedance of upstream and downstream is calculated, and the unbalanced responsibility is divided. This method is still effective when the system impedance is not much different from the load impedance. At the same time, the calculation accuracy is high and the anti-interference ability is strong. Simulation and field test verify the correctness and effectiveness of the proposed method.
Starting Page	6000
Ending Page	6008
Page Count	9
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 24, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/24
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.0636
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-09-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Electric Impedance Energy ReSource Equivalent Negative Sequence Impedance Harmonics Independent Component Analysis Load Impedance Power Generation Economics Power Supply Quality Power System Power System Economics Power System Managemen Power System Operation Renewable Energy Integration Renewable Energy Source Robust Independent Component Analysis Screening Criterion Signal Processing And Detection Source Separation Source Signal Sparse Component Analysis Method Statistics System Impedance Unbalanced Responsibility Division Method
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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